Added basic ownership transfer for shared documents

Fix items/buffs/... refresh after casting a spell

README.md

@@ -66,5 +66,24 @@ You should see this:
 => App running at: http://localhost:3000/
 ```
 
+Environmental Variables
+-----------------------
+
+```
+MAIL_URL=smtp://<your smtp mail url>
+METEOR_SETTINGS={ "public": { "environment": "production", "patreon": { "clientId": "<your patreon client ID>", "campaignId": "<your campaign id>" } }, "patreon": { "clientSecret": "<your client secret>", "creatorAccessToken": "<your creator access token>" } }
+MONGO_OPLOG_URL=mongodb+srv://<your url for the oplog account of your mongo database>
+MONGO_URL=mongodb+srv://<your url for the read/write account of your mongo database>
+NPM_CONFIG_PRODUCTION=true
+PROJECT_DIR=app
+ROOT_URL=https://<url of your DiceCloud instance>
+DEFAULT_LIBRARIES=<comma separated list of library ids that will be subscribed by default: "abc123,def456">
+```
+
+To disable Patreon features and unlock all paid restrictions for all users of your deployment, replace
+`"patreon": { "clientId": ... }"` with `"disablePatreon": true` in the public key of the METEOR_SETTINGS environment variable.
+
+Alternatively run `meteor run --settings exampleMeteorSettings.json` to start the app with the example settings that disable Patreon by default.
+
 Now, visiting [](http://localhost:3000/) should show you an empty instance of
 DiceCloud running.

app/.meteor/packages

@@ -3,53 +3,51 @@
 # 'meteor add' and 'meteor remove' will edit this file for you,
 # but you can also edit it by hand.
 
-accounts-password@1.6.2
-accounts-ui@1.3.1
-random@1.2.0
+accounts-password
+random
 dburles:collection-helpers
-reactive-var@1.0.11
-underscore@1.0.10
+reactive-var
+underscore
 momentjs:moment
 dburles:mongo-collection-instances
-percolate:migrations
-accounts-google@1.3.3
-email@2.0.0
+accounts-google
+email
 meteorhacks:subs-manager
 chuangbo:marked
-meteor-base@1.4.0
-mobile-experience@1.1.0
-mongo@1.10.0
-session@1.2.0
-jquery@1.11.10
-tracker@1.2.0
-logging@1.1.20
-reload@1.3.0
-ejson@1.1.1
-check@1.3.1
-standard-minifier-js@2.6.0
-shell-server@0.5.0
-seba:minifiers-autoprefixer
+meteor-base
+mobile-experience
+mongo
+session
+tracker
+logging
+reload
+ejson
+check
+standard-minifier-js
+shell-server
 templates:array
-ecmascript@0.14.3
-es5-shim@4.8.0
-reactive-dict@1.3.0
+ecmascript
+es5-shim
+reactive-dict
 percolate:synced-cron
 ongoworks:speakingurl
-service-configuration@1.0.11
-google-config-ui@1.0.1
-dynamic-import@0.5.2
-ddp-rate-limiter@1.0.9
-rate-limit@1.0.9
-meteortesting:mocha
+service-configuration
+dynamic-import
+ddp-rate-limiter
+rate-limit
 mdg:validated-method
 akryum:vue-router2
 static-html
-aldeed:collection2@3.0.0
+aldeed:collection2
 aldeed:schema-index
-akryum:vue-component
+zer0th:meteor-vuetify-loader
 accounts-patreon
 bozhao:link-accounts
 peerlibrary:reactive-publish
 simple:rest
 simple:rest-method-mixin
 mikowals:batch-insert
+peerlibrary:subscription-data
+seba:minifiers-autoprefixer
+akryum:vue-component
+akryum:vue-sass

app/.meteor/release

@@ -1 +1 @@
-METEOR@1.11.1
+METEOR@2.2.1

app/.meteor/versions

@@ -1,29 +1,27 @@
-accounts-base@1.7.0
+accounts-base@1.9.0
 accounts-google@1.3.3
 accounts-oauth@1.2.0
-accounts-password@1.6.2
+accounts-password@1.7.1
 accounts-patreon@0.1.0
-accounts-ui@1.3.1
-accounts-ui-unstyled@1.4.2
 akryum:npm-check@0.1.2
 akryum:vue-component@0.15.2
 akryum:vue-component-dev-client@0.4.7
 akryum:vue-component-dev-server@0.1.4
 akryum:vue-router2@0.2.3
-aldeed:collection2@3.2.1
+akryum:vue-sass@0.1.2
+aldeed:collection2@3.4.1
 aldeed:schema-index@3.0.0
 allow-deny@1.1.0
-autoupdate@1.6.0
-babel-compiler@7.5.3
+autoupdate@1.7.0
+babel-compiler@7.6.2
 babel-runtime@1.5.0
 base64@1.0.12
 binary-heap@1.0.11
-blaze@2.3.4
-blaze-tools@1.0.10
+blaze-tools@1.1.2
 boilerplate-generator@1.7.1
-bozhao:link-accounts@2.2.1
+bozhao:link-accounts@2.4.0
 caching-compiler@1.2.2
-caching-html-compiler@1.1.3
+caching-html-compiler@1.2.1
 callback-hook@1.3.0
 check@1.3.1
 chuangbo:marked@0.3.5_1
@@ -32,86 +30,81 @@ coffeescript-compiler@2.4.1
 dburles:collection-helpers@1.1.0
 dburles:mongo-collection-instances@0.3.5
 ddp@1.4.0
-ddp-client@2.3.3
+ddp-client@2.4.1
 ddp-common@1.4.0
 ddp-rate-limiter@1.0.9
-ddp-server@2.3.2
+ddp-server@2.3.3
 deps@1.0.12
 diff-sequence@1.1.1
-dynamic-import@0.5.3
-ecmascript@0.14.3
+dynamic-import@0.6.0
+ecmascript@0.15.1
 ecmascript-runtime@0.7.0
-ecmascript-runtime-client@0.11.0
-ecmascript-runtime-server@0.10.0
+ecmascript-runtime-client@0.11.1
+ecmascript-runtime-server@0.10.1
 ejson@1.1.1
 email@2.0.0
 es5-shim@4.8.0
 fetch@0.1.1
 geojson-utils@1.0.10
-google-config-ui@1.0.1
 google-oauth@1.3.0
 hot-code-push@1.0.4
-html-tools@1.0.11
-htmljs@1.0.11
-http@1.4.2
-id-map@1.1.0
+html-tools@1.1.2
+htmljs@1.1.1
+http@1.4.4
+id-map@1.1.1
 inter-process-messaging@0.1.1
-jquery@1.11.11
 lai:collection-extensions@0.2.1_1
-launch-screen@1.2.0
-less@2.8.0
+launch-screen@1.2.1
 livedata@1.0.18
-lmieulet:meteor-coverage@1.1.4
 localstorage@1.2.0
-logging@1.1.20
+logging@1.2.0
 mdg:validated-method@1.2.0
 meteor@1.9.3
 meteor-base@1.4.0
-meteorhacks:picker@1.0.3
 meteorhacks:subs-manager@1.6.4
-meteortesting:browser-tests@1.3.4
-meteortesting:mocha@1.1.5
-meteortesting:mocha-core@7.0.1
 mikowals:batch-insert@1.2.0
-minifier-css@1.5.3
-minifier-js@2.6.0
-minimongo@1.6.0
+minifier-css@1.5.4
+minifier-js@2.6.1
+minimongo@1.6.2
 mobile-experience@1.1.0
 mobile-status-bar@1.1.0
 modern-browsers@0.1.5
-modules@0.15.0
+modules@0.16.0
 modules-runtime@0.12.0
 momentjs:moment@2.29.1
-mongo@1.10.0
-mongo-decimal@0.1.1
+mongo@1.11.1
+mongo-decimal@0.1.2
 mongo-dev-server@1.1.0
-mongo-id@1.0.7
-npm-bcrypt@0.9.3
-npm-mongo@3.8.1
+mongo-id@1.0.8
+npm-bcrypt@0.9.4
+npm-mongo@3.9.0
 oauth@1.3.2
 oauth2@1.3.0
-observe-sequence@1.0.16
 ongoworks:speakingurl@9.0.0
 ordered-dict@1.1.0
 patreon-oauth@0.1.0
 peerlibrary:assert@0.3.0
+peerlibrary:check-extension@0.7.0
+peerlibrary:computed-field@0.10.0
+peerlibrary:data-lookup@0.3.0
 peerlibrary:extend-publish@0.6.0
 peerlibrary:fiber-utils@0.10.0
 peerlibrary:reactive-mongo@0.4.0
 peerlibrary:reactive-publish@0.10.0
 peerlibrary:server-autorun@0.8.0
-percolate:migrations@0.9.8
+peerlibrary:subscription-data@0.8.0
 percolate:synced-cron@1.3.2
 promise@0.11.2
-raix:eventemitter@0.1.3
+raix:eventemitter@1.0.0
 random@1.2.0
 rate-limit@1.0.9
+react-fast-refresh@0.1.1
 reactive-dict@1.3.0
 reactive-var@1.0.11
-reload@1.3.0
+reload@1.3.1
 retry@1.1.0
 routepolicy@1.1.0
-seba:minifiers-autoprefixer@1.2.1
+seba:minifiers-autoprefixer@2.0.1
 service-configuration@1.0.11
 session@1.2.0
 sha@1.0.9
@@ -119,20 +112,18 @@ shell-server@0.5.0
 simple:json-routes@2.1.0
 simple:rest@1.1.1
 simple:rest-method-mixin@1.0.1
-socket-stream-client@0.3.1
-spacebars@1.0.15
-spacebars-compiler@1.1.3
+socket-stream-client@0.3.3
+spacebars-compiler@1.3.0
 srp@1.1.0
-standard-minifier-js@2.6.0
-static-html@1.2.2
+standard-minifier-js@2.6.1
+static-html@1.3.2
 templates:array@1.0.3
-templating@1.3.2
-templating-compiler@1.3.3
-templating-runtime@1.3.2
-templating-tools@1.1.2
-tmeasday:check-npm-versions@0.3.2
+templating-tools@1.2.1
+tmeasday:check-npm-versions@1.0.2
 tracker@1.2.0
+typescript@4.2.2
 underscore@1.0.10
-url@1.3.1
-webapp@1.9.1
-webapp-hashing@1.0.9
+url@1.3.2
+webapp@1.10.1
+webapp-hashing@1.1.0
+zer0th:meteor-vuetify-loader@0.1.30

app/client/head.html

@@ -1,5 +1,6 @@
 <head>
-  <link href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900|Material+Icons" rel="stylesheet">
+  <link href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900" rel="stylesheet">
+  <link href="https://cdn.jsdelivr.net/npm/@mdi/font@5.x/css/materialdesignicons.min.css" rel="stylesheet">
   <meta name="viewport" content="width=device-width initial-scale=1.0, user-scalable=no">
 	<meta name="mobile-web-app-capable" content="yes">
 	<meta name="apple-mobile-web-app-capable" content="yes">

app/client/main.js

@@ -1,3 +1,4 @@
 import '/imports/ui/vueSetup.js';
 import '/imports/ui/styles/stylesIndex.js';
-import '/imports/ui/styles/stylesIndex.js';
+import '/imports/client/config.js';
+import '/imports/client/serviceWorker.js';

app/exampleMeteorSettings.json

@@ -0,0 +1,6 @@
+{
+  "public": {
+    "environment": "production",
+    "disablePatreon": true
+  }
+}

app/imports/api/creature/CreatureProperties.js

@@ -1,598 +0,0 @@
-import { Meteor } from 'meteor/meteor';
-import { Mongo } from 'meteor/mongo';
-import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
-import { ValidatedMethod } from 'meteor/mdg:validated-method';
-import SimpleSchema from 'simpl-schema';
-import ColorSchema from '/imports/api/properties/subSchemas/ColorSchema.js';
-import ChildSchema, { RefSchema } from '/imports/api/parenting/ChildSchema.js';
-import { recomputeCreature } from '/imports/api/creature/computation/recomputeCreature.js';
-import LibraryNodes from '/imports/api/library/LibraryNodes.js';
-import Creatures from '/imports/api/creature/Creatures.js';
-import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
-import { softRemove, restore } from '/imports/api/parenting/softRemove.js';
-import SoftRemovableSchema from '/imports/api/parenting/SoftRemovableSchema.js';
-import propertySchemasIndex from '/imports/api/properties/computedPropertySchemasIndex.js';
-import {
-	setLineageOfDocs,
-	getAncestry,
-	renewDocIds
-} from '/imports/api/parenting/parenting.js';
-import {setDocToLastOrder} from '/imports/api/parenting/order.js';
-import { storedIconsSchema } from '/imports/api/icons/Icons.js';
-import { reorderDocs } from '/imports/api/parenting/order.js';
-
-import '/imports/api/creature/actions/doAction.js';
-import '/imports/api/creature/creatureProperties/manageEquipment.js';
-
-let CreatureProperties = new Mongo.Collection('creatureProperties');
-
-let CreaturePropertySchema = new SimpleSchema({
-	type: {
-    type: String,
-    allowedValues: Object.keys(propertySchemasIndex),
-  },
-	tags: {
-		type: Array,
-		defaultValue: [],
-	},
-	'tags.$': {
-		type: String,
-	},
-	disabled: {
-		type: Boolean,
-		optional: true,
-	},
-  icon: {
-    type: storedIconsSchema,
-    optional: true,
-  },
-  // Denormalised flag if this property is inactive on the sheet for any reason
-  // Including being disabled, or a decendent of a disabled property
-  inactive: {
-    type: Boolean,
-    optional: true,
-    index: 1,
-  },
-  // Denormalised flag if this property was made inactive by an inactive
-  // ancestor. True if this property has an inactive ancestor even if this
-  // property is itself inactive
-  deactivatedByAncestor: {
-    type: Boolean,
-    optional: true,
-    index: 1,
-  },
-});
-
-for (let key in propertySchemasIndex){
-	let schema = new SimpleSchema({});
-	schema.extend(propertySchemasIndex[key]);
-	schema.extend(CreaturePropertySchema);
-  schema.extend(ColorSchema);
-	schema.extend(ChildSchema);
-	schema.extend(SoftRemovableSchema);
-	CreatureProperties.attachSchema(schema, {
-		selector: {type: key}
-	});
-}
-
-export function getCreature(property){
-  if (!property) throw new Meteor.Error('No property provided');
-  let creature = Creatures.findOne(property.ancestors[0].id);
-  if (!creature) throw new Meteor.Error('Creature does not exist');
-  return creature;
-}
-
-function assertPropertyEditPermission(property, userId){
-  let creature = getCreature(property);
-  return assertEditPermission(creature, userId);
-}
-
-function recomputeCreatures(property){
-	for (let ref of property.ancestors){
-		if (ref.collection === 'creatures') {
-      reorderDocs({collection: CreatureProperties, ancestorId: ref.id});
-			recomputeCreature.call({charId: ref.id});
-		}
-	}
-}
-
-const insertProperty = new ValidatedMethod({
-  name: 'creatureProperties.insert',
-	validate: null,
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 5,
-    timeInterval: 5000,
-  },
-  run({creatureProperty}) {
-    delete creatureProperty._id;
-    assertPropertyEditPermission(creatureProperty, this.userId);
-		let _id = CreatureProperties.insert(creatureProperty);
-		let property = CreatureProperties.findOne(_id);
-		recomputeCreatures(property);
-  },
-});
-
-const duplicateProperty = new ValidatedMethod({
-  name: 'creatureProperties.duplicate',
-  validate: new SimpleSchema({
-    _id: {
-      type: String,
-      regEx: SimpleSchema.RegEx.Id,
-    }
-  }).validator(),
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 5,
-    timeInterval: 5000,
-  },
-  run({_id}) {
-    let creatureProperty = CreatureProperties.findOne(_id);
-    assertPropertyEditPermission(creatureProperty, this.userId);
-    delete creatureProperty._id;
-		CreatureProperties.insert(creatureProperty);
-    recomputeCreatures(creatureProperty);
-  },
-});
-
-const insertPropertyFromLibraryNode = new ValidatedMethod({
-	name: 'creatureProperties.insertPropertyFromLibraryNode',
-	validate: new SimpleSchema({
-		nodeId: {
-			type: String,
-			regEx: SimpleSchema.RegEx.Id,
-		},
-		parentRef: {
-			type: RefSchema,
-		},
-	}).validator(),
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 5,
-    timeInterval: 5000,
-  },
-	run({nodeId, parentRef}) {
-		// get the new ancestry for the properties
-		let {parentDoc, ancestors} = getAncestry({parentRef});
-
-		// Check permission to edit
-		if (parentRef.collection === 'creatures'){
-			assertEditPermission(parentDoc, this.userId);
-		} else if (parentRef.collection === 'creatureProperties'){
-			assertPropertyEditPermission(parentDoc, this.userId);
-		} else {
-			throw `${parentRef.collection} is not a valid parent collection`
-		}
-
-		// Fetch the library node and its decendents, provided they have not been
-		// removed
-		let node = LibraryNodes.findOne({
-			_id: nodeId,
-			removed: {$ne: true},
-		});
-		if (!node) throw `Node not found for nodeId: ${nodeId}`;
-		let oldParent = node.parent;
-		let nodes = LibraryNodes.find({
-			'ancestors.id': nodeId,
-			removed: {$ne: true},
-		}).fetch();
-    // The root node is last in the array of nodes
-		nodes.push(node);
-
-		// re-map all the ancestors
-		setLineageOfDocs({
-			docArray: nodes,
-			newAncestry: ancestors,
-			oldParent,
-		});
-
-		// Give the docs new IDs without breaking internal references
-		renewDocIds({
-			docArray: nodes,
-			collectionMap: {'libraryNodes': 'creatureProperties'}
-		});
-
-		// Order the root node
-		setDocToLastOrder({
-			collection: CreatureProperties,
-			doc: node,
-		});
-
-		// Insert the creature properties
-    let insertedDocIds = CreatureProperties.batchInsert(nodes);
-
-    // get the root inserted doc
-    let rootId = insertedDocIds[insertedDocIds.length - 1];
-
-		// Recompute the creatures doc was attached to
-		recomputeCreatures(node);
-
-		// Return the docId of the last property, the inserted root property
-		return rootId;
-	},
-})
-
-const updateProperty = new ValidatedMethod({
-  name: 'creatureProperties.update',
-  validate({_id, path}){
-		if (!_id) throw new Meteor.Error('No _id', '_id is required');
-		// We cannot change these fields with a simple update
-		switch (path[0]){
-			case 'type':
-      case 'order':
-      case 'parent':
-      case 'ancestors':
-			case 'damage':
-				throw new Meteor.Error('Permission denied',
-				'This property can\'t be updated directly');
-		}
-  },
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 5,
-    timeInterval: 5000,
-  },
-  run({_id, path, value}) {
-    let property = CreatureProperties.findOne(_id);
-    assertPropertyEditPermission(property, this.userId);
-    let pathString = path.join('.');
-    let modifier;
-    // unset empty values
-    if (value === null || value === undefined){
-      modifier = {$unset: {[pathString]: 1}};
-    } else {
-      modifier = {$set: {[pathString]: value}};
-    }
-		CreatureProperties.update(_id, modifier, {
-			selector: {type: property.type},
-		});
-		recomputeCreatures(property);
-  },
-});
-
-export function damagePropertyWork({property, operation, value}){
-  if (operation === 'set'){
-    let currentValue = property.value;
-    // Set represents what we want the value to be after damage
-    // So we need the actual damage to get to that value
-    let damage = currentValue - value;
-    // Damage can't exceed total value
-    if (damage > currentValue) damage = currentValue;
-    // Damage must be positive
-    if (damage < 0) damage = 0;
-    CreatureProperties.update(property._id, {
-      $set: {damage}
-    }, {
-      selector: property
-    });
-    return currentValue - damage;
-  } else if (operation === 'increment'){
-    let currentValue = property.value - (property.damage || 0);
-    let currentDamage = property.damage;
-    let increment = value;
-    // Can't increase damage above the remaining value
-    if (increment > currentValue) increment = currentValue;
-    // Can't decrease damage below zero
-    if (-increment > currentDamage) increment = -currentDamage;
-    CreatureProperties.update(property._id, {
-      $inc: {damage: increment}
-    }, {
-      selector: property
-    });
-    return increment;
-  }
-}
-
-const damagePropertiesByName = new ValidatedMethod({
-  name: 'CreatureProperties.damagePropertiesByName',
-  validate: new SimpleSchema({
-    creatureId: SimpleSchema.RegEx.Id,
-    variableName: {
-      type: String,
-    },
-    operation: {
-      type: String,
-      allowedValues: ['set', 'increment']
-    },
-    value: Number,
-  }).validator(),
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 20,
-    timeInterval: 5000,
-  },
-  run({creatureId, variableName, operation, value}) {
-		// Check permissions
-    let creature = Creatures.findOne(creatureId, {
-      fields: {
-        damageMultipliers: 1,
-        owner: 1,
-        readers: 1,
-        writers: 1,
-      },
-    });
-    assertEditPermission(creature, this.userId);
-    CreatureProperties.find({
-      'ancestors.id': creatureId,
-      variableName,
-      removed: {$ne: false},
-      inactive: {$ne: true},
-    }).forEach(property => {
-      // Check if property can take damage
-      let schema = CreatureProperties.simpleSchema(property);
-      if (!schema.allowsKey('damage')) return;
-      // Damage the property
-      damagePropertyWork({property: property, operation, value})
-    });
-    recomputeCreature.call({charId: creatureId});
-  }
-})
-
-const damageProperty = new ValidatedMethod({
-  name: 'creatureProperties.damage',
-  validate: new SimpleSchema({
-    _id: SimpleSchema.RegEx.Id,
-    operation: {
-      type: String,
-      allowedValues: ['set', 'increment']
-    },
-    value: Number,
-  }).validator(),
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 20,
-    timeInterval: 5000,
-  },
-  run({_id, operation, value}) {
-		let currentProperty = CreatureProperties.findOne(_id);
-		// Check permissions
-		assertPropertyEditPermission(currentProperty, this.userId);
-		// Check if property can take damage
-		let schema = CreatureProperties.simpleSchema(currentProperty);
-		if (!schema.allowsKey('damage')){
-			throw new Meteor.Error(
-				'Damage property failed',
-				`Property of type "${currentProperty.type}" can't be damaged`
-			);
-		}
-		damagePropertyWork({property: currentProperty, operation, value})
-		recomputeCreatures(currentProperty);
-  },
-});
-
-const dealDamage = new ValidatedMethod({
-  name: 'creatureProperties.dealDamage',
-  validate: new SimpleSchema({
-    creatureId: SimpleSchema.RegEx.Id,
-    damageType: {
-      type: String,
-    },
-    amount: Number,
-  }).validator(),
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 20,
-    timeInterval: 5000,
-  },
-  run({creatureId, damageType, amount}) {
-    let creature = Creatures.findOne(creatureId, {
-      fields: {
-        damageMultipliers: 1,
-        owner: 1,
-        readers: 1,
-        writers: 1,
-      },
-    });
-		// Check permissions
-    assertEditPermission(creature, this.userId);
-    let healthBars = CreatureProperties.find({
-      'ancestors.id': creatureId,
-      type: 'attribute',
-      attributeType:'healthBar',
-      removed: {$ne: true},
-      inactive: {$ne: true},
-    }, {
-      sort: {order: -1},
-    });
-    let multiplier = creature.damageMultipliers[damageType];
-    if (multiplier === undefined) multiplier = 1;
-    let totalDamage = Math.floor(amount * multiplier);
-    let damageLeft = totalDamage;
-    if (damageType === 'healing') damageLeft = -totalDamage;
-    healthBars.forEach(healthBar => {
-      if (damageLeft === 0) return;
-      let damageAdded = damagePropertyWork({
-        property: healthBar,
-        operation: 'increment',
-        value: damageLeft,
-      });
-      damageLeft -= damageAdded;
-    });
-    recomputeCreature.call({charId: creatureId});
-    return totalDamage;
-  },
-});
-
-export function adjustQuantityWork({property, operation, value}){
-  // Check if property has quantity
-  let schema = CreatureProperties.simpleSchema(property);
-  if (!schema.allowsKey('quantity')){
-    throw new Meteor.Error(
-      'Adjust quantity failed',
-      `Property of type "${property.type}" doesn't have a quantity`
-    );
-  }
-  if (operation === 'set'){
-    CreatureProperties.update(property._id, {
-      $set: {quantity: value}
-    }, {
-      selector: property
-    });
-  } else if (operation === 'increment'){
-    // value here is 'damage'
-    value = -value;
-    let currentQuantity = property.quantity;
-    if (currentQuantity + value < 0) value = -currentQuantity;
-    CreatureProperties.update(property._id, {
-      $inc: {quantity: value}
-    }, {
-      selector: property
-    });
-  }
-}
-
-const adjustQuantity = new ValidatedMethod({
-  name: 'creatureProperties.adjustQuantity',
-  validate: new SimpleSchema({
-    _id: SimpleSchema.RegEx.Id,
-    operation: {
-      type: String,
-      allowedValues: ['set', 'increment']
-    },
-    value: Number,
-  }).validator(),
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 5,
-    timeInterval: 5000,
-  },
-  run({_id, operation, value}) {
-		let currentProperty = CreatureProperties.findOne(_id);
-		// Check permissions
-		assertPropertyEditPermission(currentProperty, this.userId);
-    adjustQuantityWork({property: currentProperty, operation, value});
-    recomputeCreatures(currentProperty);
-  },
-});
-
-const selectAmmoItem = new ValidatedMethod({
-  name: 'creatureProperties.selectAmmoItem',
-  validate: new SimpleSchema({
-    actionId: SimpleSchema.RegEx.Id,
-    itemId: SimpleSchema.RegEx.Id,
-    itemConsumedIndex: Number,
-  }).validator(),
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 5,
-    timeInterval: 5000,
-  },
-  run({actionId, itemId, itemConsumedIndex}) {
-		let action = CreatureProperties.findOne(actionId);
-		// Check permissions
-		assertPropertyEditPermission(action, this.userId);
-    // Check that this index has a document to edit
-    let itemConsumed = action.resources.itemsConsumed[itemConsumedIndex];
-    if (!itemConsumed){
-      throw new Meteor.Error('Resouce not found',
-        'Could not set ammo, because the ammo document was not found');
-    }
-    let itemToLink = CreatureProperties.findOne(itemId);
-    if (!itemToLink){
-      throw new Meteor.Error('Item not found',
-        'Could not set ammo: the item was not found');
-    }
-    let path = `resources.itemsConsumed.${itemConsumedIndex}.itemId`;
-    CreatureProperties.update(actionId, {
-      $set: {[path]: itemId}
-    }, {
-      selector: action,
-    });
-    recomputeCreatures(action);
-  },
-});
-
-const pushToProperty = new ValidatedMethod({
-	name: 'creatureProperties.push',
-	validate: null,
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 5,
-    timeInterval: 5000,
-  },
-	run({_id, path, value}){
-		let property = CreatureProperties.findOne(_id);
-    assertPropertyEditPermission(property, this.userId);
-		CreatureProperties.update(_id, {
-			$push: {[path.join('.')]: value},
-		}, {
-			selector: {type: property.type},
-		});
-		recomputeCreatures(property);
-	}
-});
-
-const pullFromProperty = new ValidatedMethod({
-	name: 'creatureProperties.pull',
-	validate: null,
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 5,
-    timeInterval: 5000,
-  },
-	run({_id, path, itemId}){
-		let property = CreatureProperties.findOne(_id);
-    assertPropertyEditPermission(property, this.userId);
-		CreatureProperties.update(_id, {
-			$pull: {[path.join('.')]: {_id: itemId}},
-		}, {
-			selector: {type: property.type},
-			getAutoValues: false,
-		});
-		recomputeCreatures(property);
-	}
-});
-
-const softRemoveProperty = new ValidatedMethod({
-	name: 'creatureProperties.softRemove',
-	validate: new SimpleSchema({
-		_id: SimpleSchema.RegEx.Id
-	}).validator(),
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 5,
-    timeInterval: 5000,
-  },
-	run({_id}){
-		let property = CreatureProperties.findOne(_id);
-    assertPropertyEditPermission(property, this.userId);
-		softRemove({_id, collection: CreatureProperties});
-		recomputeCreatures(property);
-	}
-});
-
-const restoreProperty = new ValidatedMethod({
-	name: 'creatureProperties.restore',
-	validate: new SimpleSchema({
-		_id: SimpleSchema.RegEx.Id
-	}).validator(),
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 5,
-    timeInterval: 5000,
-  },
-	run({_id}){
-		let property = CreatureProperties.findOne(_id);
-    assertPropertyEditPermission(property, this.userId);
-		restore({_id, collection: CreatureProperties});
-		recomputeCreatures(property);
-	}
-});
-
-export default CreatureProperties;
-export {
-	CreaturePropertySchema,
-	insertProperty,
-  duplicateProperty,
-	insertPropertyFromLibraryNode,
-	updateProperty,
-  dealDamage,
-  damagePropertiesByName,
-	damageProperty,
-  adjustQuantity,
-  selectAmmoItem,
-	pushToProperty,
-	pullFromProperty,
-  softRemoveProperty,
-	restoreProperty,
-};

app/imports/api/creature/Parties.js

@@ -1,28 +0,0 @@
-import SimpleSchema from 'simpl-schema';
-
-let Parties = new Mongo.Collection('parties');
-
-let partySchema = new SimpleSchema({
-	name: {
-		type: String,
-		defaultValue: 'New Party',
-		trim: false,
-		optional: true,
-	},
-	creatures: {
-		type: Array,
-		defaultValue: [],
-	},
-	'creatures.$': {
-		type: String,
-		regEx: SimpleSchema.RegEx.Id,
-	},
-	owner: {
-		type: String,
-		regEx: SimpleSchema.RegEx.Id,
-	},
-});
-
-Parties.attachSchema(partySchema);
-
-export default Parties;

app/imports/api/creature/actions/applyAction.js

@@ -1,11 +1,13 @@
 import spendResources from '/imports/api/creature/actions/spendResources.js'
-import {insertCreatureLog} from '/imports/api/creature/log/CreatureLogs.js';
+import embedInlineCalculations from '/imports/api/creature/computation/afterComputation/embedInlineCalculations.js';
 
-export default function applyAction({prop, creature}){
-  spendResources(prop);
-  insertCreatureLog.call({
-    log: {
-      text: prop.name,
-      creatureId: creature._id},
-  });
+export default function applyAction({prop, log}){
+  let content = { name: prop.name };
+  if (prop.summary){
+    content.value = embedInlineCalculations(
+      prop.summary, prop.summaryCalculations
+    );
+  }
+  log.content.push(content);
+  spendResources({prop, log});
 }

app/imports/api/creature/actions/applyAdjustment.js

@@ -1,56 +1,55 @@
 import evaluateString from '/imports/api/creature/computation/afterComputation/evaluateString.js';
-import {insertCreatureLog} from '/imports/api/creature/log/CreatureLogs.js';
-import { damagePropertiesByName } from '/imports/api/creature/CreatureProperties.js';
+import damagePropertiesByName from '/imports/api/creature/creatureProperties/methods/damagePropertiesByName.js';
 
 export default function applyAdjustment({
   prop,
   creature,
   targets,
-  actionContext
+  actionContext,
+  log
 }){
   let damageTargets = prop.target === 'self' ? [creature] : targets;
   let scope = {
     ...creature.variables,
     ...actionContext,
   };
-  try {
-    var {result, errors} = evaluateString(prop.amount, scope, 'reduce');
-    if (typeof result !== 'number') {
-      return insertCreatureLog.call({ log: {
-        text: errors.join(', ') || 'Something went wrong',
-        creatureId: creature._id,
-      }});
-    }
-  } catch (e){
-    return insertCreatureLog.call({ log: {
-      text: e.toString(),
-      creatureId: creature._id,
-    }});
-  }
+  var {result, context} = evaluateString({
+    string: prop.amount,
+    scope,
+    fn: 'reduce'
+  });
+  context.errors.forEach(e => {
+    log.content.push({
+      name: 'Attribute damage error',
+      value: e.message || e.toString(),
+    });
+  });
   if (damageTargets) {
     damageTargets.forEach(target => {
       if (prop.target === 'each'){
-        result = evaluateString(prop.amount, scope, 'reduce');
+        ({result} = evaluateString({
+          string: prop.amount,
+          scope,
+          fn: 'reduce'
+        }));
       }
       damagePropertiesByName.call({
         creatureId: target._id,
         variableName: prop.stat,
         operation: prop.operation || 'increment',
-        value: result
+        value: result.value,
       });
-      insertCreatureLog.call({
-        log: {
-          text: `${prop.stat} ${prop.operation === 'set' ? 'set to' : ''} ${-result}`,
-          creatureId: target._id,
-        }
+      log.content.push({
+        name: 'Attribute damage',
+        value: `${prop.stat}${prop.operation === 'set' ? ' set to' : ''}` +
+        ` ${result.isNumber ? -result.value : result.toString()}`,
       });
     });
   } else {
-    insertCreatureLog.call({
-      log: {
-        text: `${prop.stat} ${prop.operation === 'set' ? 'set to' : ''} ${-result}`,
-        creatureId: creature._id,
-      }
+    log.content.push({
+      name: 'Attribute damage',
+      value: `${prop.stat}${prop.operation === 'set' ? ' set to' : ''}` +
+      ` ${result.isNumber ? -result.value : result.toString()}`,
     });
   }
 }

app/imports/api/creature/actions/applyAttack.js

@@ -1,18 +1,22 @@
 import roll from '/imports/parser/roll.js';
-import {insertCreatureLog} from '/imports/api/creature/log/CreatureLogs.js';
 
 export default function applyAttack({
   prop,
-  //children,
+  log,
+  actionContext,
   creature,
-  //targets,
-  //actionContext
 }){
-  let result = roll(1, 20)[0] + prop.rollBonusResult;
-  insertCreatureLog.call({
-    log: {
-      text: `${prop.name} attack. ${result} to hit`,
-      creatureId: creature._id,
-    }
+  let value = roll(1, 20)[0];
+  actionContext.attackRoll = {value};
+  let criticalHitTarget = creature.variables.criticalHitTarget &&
+    creature.variables.criticalHitTarget.currentValue || 20;
+  let criticalHit = value >= criticalHitTarget;
+  if (criticalHit) actionContext.criticalHit = {value: true};
+  let result = value + prop.rollBonusResult;
+  actionContext.toHit = {value: result};
+
+  log.content.push({
+    name: criticalHit ? 'Critical Hit!' : 'To Hit',
+    value: `1d20 [${value}] + ${prop.rollBonusResult} = ` + result,
   });
 }

app/imports/api/creature/actions/applyBuff.js

@@ -3,7 +3,7 @@ import {
 	renewDocIds
 } from '/imports/api/parenting/parenting.js';
 import {setDocToLastOrder} from '/imports/api/parenting/order.js';
-import CreatureProperties from '/imports/api/creature/CreatureProperties.js';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
 
 export default function applyBuff({
   prop,

app/imports/api/creature/actions/applyDamage.js

@@ -1,63 +1,115 @@
 import evaluateString from '/imports/api/creature/computation/afterComputation/evaluateString.js';
+import dealDamage from '/imports/api/creature/creatureProperties/methods/dealDamage.js';
 import {insertCreatureLog} from '/imports/api/creature/log/CreatureLogs.js';
-import { dealDamage } from '/imports/api/creature/CreatureProperties.js';
+import { CompilationContext } from '/imports/parser/parser.js';
 
 export default function applyDamage({
   prop,
   creature,
   targets,
-  actionContext
+  actionContext,
+  log,
 }){
   let damageTargets = prop.target === 'self' ? [creature] : targets;
   let scope = {
     ...creature.variables,
     ...actionContext,
   };
-  try {
-    var {result, errors} = evaluateString(prop.amount, scope, 'reduce');
-    if (typeof result !== 'number') {
-      return insertCreatureLog.call({ log: {
-        text: errors.join(', '),
-        creatureId: creature._id,
-      }});
-    }
-  } catch (e){
-    return insertCreatureLog.call({ log: {
-      text: e.toString(),
-      creatureId: creature._id,
-    }});
+  // Add the target's variables to the scope
+  if (targets.length === 1){
+    scope.target = targets[0].variables;
   }
-  if (damageTargets) {
+  // Determine if the hit is critical
+  let criticalHit = !!(
+    actionContext.criticalHit &&
+    actionContext.criticalHit.value &&
+    prop.damageType !== 'healing' // Can't critically heal
+  );
+  // Double the damage rolls if the hit is critical
+  let context = new CompilationContext({
+    doubleRolls: criticalHit,
+  });
+
+  // Compute the roll the first time, logging any errors
+  var {result} = evaluateString({
+    string: prop.amount,
+    scope,
+    fn: 'reduce',
+    context
+  });
+
+  // If the result is an error bail out now
+  if (result.constructor.name === 'ErrorNode'){
+    log.content.push({
+      name: 'Damage error',
+      value: result.toString(),
+    });
+    return;
+  }
+
+  // Memoise the damage suffix for the log
+  let suffix = (criticalHit ? ' critical ' : ' ') +
+    prop.damageType +
+    (prop.damageType !== ' healing ' ? ' damage ': '');
+
+  if (damageTargets && damageTargets.length) {
+    // Iterate through all the targets
     damageTargets.forEach(target => {
+      let name = prop.damageType === 'healing' ? 'Healing' : 'Damage';
+
+      // Reroll the damage if needed
       if (prop.target === 'each'){
-        result = evaluateString(prop.amount, scope, 'reduce');
+        ({result, context} = evaluateString({
+          string: prop.amount,
+          scope,
+          fn: 'reduce'
+        }));
       }
+      // If the result is an error or not a number bail out now
+      if (result.constructor.name === 'ErrorNode' || !result.isNumber){
+        log.content.push({
+          name: 'Damage error',
+          value: result.toString(),
+        });
+        return;
+      }
+
+      // Deal the damage to the target
       let damageDealt = dealDamage.call({
         creatureId: target._id,
         damageType: prop.damageType,
-        amount: result,
+        amount: result.value,
       });
-      insertCreatureLog.call({
-        log: {
-          text: `Recieved ${damageDealt} ${prop.damageType}${prop.damageType !== 'healing'? ' damage': ''}`,
-          creatureId: target._id,
-        }
-      });
-      if (target._id !== creature._id){
+
+      // Log the damage done
+      if (target._id === creature._id){
+        // Target is same as self, log damage as such
+        log.content.push({
+          name,
+          value: damageDealt + suffix + ' to self',
+        });
+      } else {
+        log.content.push({
+          name,
+          value: 'Dealt ' + damageDealt + suffix + ` ${target.name && ' to '}${target.name}`,
+        });
+        // Log the damage received on that creature's log as well
         insertCreatureLog.call({
           log: {
-            text: `Dealt ${damageDealt} ${prop.damageType}${prop.damageType !== 'healing'? ' damage': ''}`,
-            creatureId: creature._id,
+            creatureId: target._id,
+            content: [{
+              name,
+              value: 'Recieved ' + damageDealt + suffix,
+            }],
           }
         });
       }
     });
   } else {
-    insertCreatureLog.call({
-      log: {
-        text: `${result} ${prop.damageType}${prop.damageType !== 'healing'? ' damage': ''}`,
-        creatureId: creature._id,
-      }
+    // There are no targets, just log the result
+    log.content.push({
+      name: prop.damageType === 'healing' ? 'Healing' : 'Damage',
+      value: result.toString() + suffix,
     });
   }
 }

app/imports/api/creature/actions/applyProperties.js

@@ -1,67 +1,82 @@
 import applyAction from '/imports/api/creature/actions/applyAction.js';
 import applyAdjustment from '/imports/api/creature/actions/applyAdjustment.js';
 import applyAttack from '/imports/api/creature/actions/applyAttack.js';
-import applyDamage from '/imports/api/creature/actions/applyDamage.js';
 import applyBuff from '/imports/api/creature/actions/applyBuff.js';
+import applyDamage from '/imports/api/creature/actions/applyDamage.js';
+import applyRoll from '/imports/api/creature/actions/applyRoll.js';
+import applyToggle from '/imports/api/creature/actions/applyToggle.js';
+import applySave from '/imports/api/creature/actions/applySave.js';
 
 function applyProperty(options){
   let prop = options.prop;
-  if (
-    prop.disabled === true || // ignore disabled props
-    prop.equipped === false || // ignore unequipped items
-    prop.toggleResult === false || // ignore untoggled toggles
-    prop.applied === true // ignore buffs that are already applied
-  ){
+  if (prop.type === 'buff'){
+    // ignore only applied buffs, don't apply them again
+    if (prop.applied === true){
+      return false;
+    }
+  // Only ignore toggles if they wont be computed
+  } else if (prop.type === 'toggle') {
+    if (prop.disabled) return false;
+    if (prop.enabled) return true;
+    if (!prop.condition) return false;
+  // Ignore inactive props of other types
+  } else if (prop.deactivatedBySelf === true){
     return false;
   }
   switch (prop.type){
     case 'action':
     case 'spell':
       applyAction(options);
-      return true;
+      break;
     case 'attack':
       applyAction(options);
       applyAttack(options);
-      return true;
+      break;
     case 'damage':
       applyDamage(options);
-      return true;
+      break;
     case 'adjustment':
       applyAdjustment(options);
-      return true;
+      break;
     case 'buff':
       applyBuff(options);
       return false;
+    case 'toggle':
+      return applyToggle(options);
     case 'roll':
-      // applyRoll(options);
-      return true;
+      applyRoll(options);
+      break;
     case 'savingThrow':
-      // applySavingThrow(options);
-      return false;
+      return applySave(options);
+  }
+  return true;
+}
+
+function applyPropertyAndWalkChildren({prop, children, targets, ...options}){
+  let shouldKeepWalking = applyProperty({ prop, children, targets, ...options });
+  if (shouldKeepWalking){
+    applyProperties({ forest: children, targets, ...options,});
   }
 }
 
-export default function applyProperties({
-  forest,
-  creature,
-  targets,
-  actionContext
-}){
-  forest.forEach(child => {
-    let walkChildren = applyProperty({
-      prop: child.node,
-      children: child.children,
-      creature,
-      targets,
-      actionContext
-    });
-    if (walkChildren){
-      applyProperties({
-        forest: child.children,
-        creature,
-        targets,
-        actionContext
+export default function applyProperties({ forest, targets, ...options}){
+  forest.forEach(node => {
+    let prop = node.node;
+    options.actionContext[`#${prop.type}`] = prop;
+    let children = node.children;
+    if (shouldSplit(prop) && targets.length){
+      targets.forEach(target => {
+        let targets = [target]
+        applyPropertyAndWalkChildren({ targets, prop, children, ...options});
       });
+    } else {
+      applyPropertyAndWalkChildren({prop, children, targets, ...options});
     }
   });
 }
+
+function shouldSplit(prop){
+  if (prop.target === 'each'){
+    return true;
+  }
+}

app/imports/api/creature/actions/applyRoll.js

@@ -0,0 +1,25 @@
+import evaluateString from '/imports/api/creature/computation/afterComputation/evaluateString.js';
+
+export default function applyRoll({
+  prop,
+  creature,
+  actionContext,
+  log,
+}){
+  let scope = {
+    ...creature.variables,
+    ...actionContext,
+  };
+  var {result} = evaluateString({
+    string: prop.roll,
+    scope,
+    fn: 'reduce'
+  });
+  if (result.isNumber){
+    actionContext[prop.variableName] = result.value;
+  }
+  log.content.push({
+    name: prop.name,
+    value: prop.variableName + ' = ' + prop.roll + ' = ' + result.toString(),
+  });
+}

app/imports/api/creature/actions/applySave.js

@@ -0,0 +1,76 @@
+import evaluateString from '/imports/api/creature/computation/afterComputation/evaluateString.js';
+import CreaturesProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import roll from '/imports/parser/roll.js';
+
+export default function applySave({
+  prop,
+  creature,
+  actionContext,
+  log,
+}){
+  let scope = {
+    ...creature.variables,
+    ...actionContext,
+  };
+  try {
+    // Calculate the DC
+    var {result} = evaluateString({
+      string: prop.dc,
+      scope,
+      fn: 'reduce'
+    });
+    let dc = result.value;
+    log.content.push({
+      name: prop.name,
+      value: ' DC ' + result.toString(),
+    });
+    if (prop.target === 'self'){
+      let save = CreaturesProperties.findOne({
+        'ancestors.id': creature._id,
+        type: 'skill',
+        skillType: 'save',
+        variableName: prop.stat,
+        removed: {$ne: true},
+        inactive: {$ne: true},
+      });
+      if (!save){
+        log.content.push({
+          name: 'Saving throw error',
+          value: 'No saving throw found: ' + prop.stat,
+        });
+        return;
+      }
+      let value, values, resultPrefix;
+      if (save.advantage === 1){
+        values = roll(2, 20).sort().reverse();
+        value = values[0];
+        resultPrefix = `Advantage: 1d20 [${values[0]},~~${values[1]}~~] + ${save.value} = `
+      } else if (save.advantage === -1){
+        values = roll(2, 20).sort();
+        value = values[0];
+        resultPrefix = `Disadvantage: 1d20 [${values[0]},~~${values[1]}~~] + ${save.value} = `
+      } else {
+        values = roll(1, 20);
+        value = values[0];
+        resultPrefix = `1d20 [${value}] + ${save.value} = `
+      }
+      actionContext.savingThrowRoll = {value};
+      let result = value + save.value;
+      actionContext.savingThrow = {value: result};
+      let saveSuccess = result >= dc;
+      log.content.push({
+        name: 'Save',
+        value: resultPrefix + result + (saveSuccess ? 'Passed' : 'Failed')
+      });
+      return !saveSuccess;
+    } else {
+      // TODO
+      return true;
+    }
+  } catch (e){
+    log.content.push({
+      name: 'Save error',
+      value: e.toString(),
+    });
+  }
+}

app/imports/api/creature/actions/applyToggle.js

@@ -0,0 +1,33 @@
+import evaluateString from '/imports/api/creature/computation/afterComputation/evaluateString.js';
+
+export default function applyToggle({
+  prop,
+  creature,
+  actionContext,
+  log,
+}){
+  let scope = {
+    ...creature.variables,
+    ...actionContext,
+  };
+  if (Number.isFinite(+prop.condition)){
+    return !!+prop.condition;
+  }
+  var {result} = evaluateString({
+    string: prop.condition,
+    scope,
+    fn: 'reduce'
+  });
+  if (result.constructor.name === 'ErrorNode') {
+    log.content.push({
+      name: 'Toggle error',
+      value: result.toString(),
+    });
+    return false;
+  }
+  log.content.push({
+    name: prop.name || 'Toggle',
+    value: prop.condition + ' = ' + result.toString(),
+  });
+  return !!result.value;
+}

app/imports/api/creature/actions/castSpellWithSlot.js

@@ -0,0 +1,92 @@
+import SimpleSchema from 'simpl-schema';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import { damagePropertyWork } from '/imports/api/creature/creatureProperties/methods/damageProperty.js';
+import { assertEditPermission } from '/imports/api/creature/creatures/creaturePermissions.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+import { doActionWork } from '/imports/api/creature/actions/doAction.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import getAncestorContext from '/imports/api/creature/actions/getAncestorContext.js';
+import recomputeInventory from '/imports/api/creature/denormalise/recomputeInventory';
+import recomputeInactiveProperties from '/imports/api/creature/denormalise/recomputeInactiveProperties';
+
+const castSpellWithSlot = new ValidatedMethod({
+  name: 'creatureProperties.castSpellWithSlot',
+  validate: new SimpleSchema({
+    spellId: SimpleSchema.RegEx.Id,
+    slotId: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+      optional: true,
+    },
+    targetId: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+      optional: true,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 10,
+    timeInterval: 5000,
+  },
+  run({spellId, slotId, targetId}) {
+    let spell = CreatureProperties.findOne(spellId);
+		// Check permissions
+    let creature = getRootCreatureAncestor(spell);
+    assertEditPermission(creature, this.userId);
+    let target = undefined;
+    if (targetId) {
+      target = Creatures.findOne(targetId);
+      assertEditPermission(target, this.userId);
+    }
+    let slotLevel = spell.level || 0;
+    if (slotLevel !== 0){
+      let slot = CreatureProperties.findOne(slotId);
+      if (!slot){
+        throw new Meteor.Error('No slot',
+          'Slot not found to cast spell');
+      }
+      if (!slot.currentValue){
+        throw new Meteor.Error('No slot',
+          'Slot depleted');
+      }
+      if (!(slot.spellSlotLevelValue >= spell.level)){
+        throw new Meteor.Error('Slot too small',
+          'Slot is not large enough to cast spell');
+      }
+      slotLevel = slot.spellSlotLevelValue;
+      damagePropertyWork({
+        property: slot,
+        operation: 'increment',
+        value: 1,
+      });
+    }
+    let actionContext = getAncestorContext(spell);
+
+    doActionWork({
+      action: spell,
+      actionContext: {slotLevel, ...actionContext},
+      creature,
+      targets: target ? [target] : [],
+      method: this,
+    });
+
+    // Note these lines only recompute the top-level creature, not the nearest one
+    // The acting creature might have a new item
+    recomputeInventory(creature._id);
+    // The spell might add properties which need to be activated
+    recomputeInactiveProperties(creature._id);
+    recomputeCreatureByDoc(creature);
+
+    if (target){
+      recomputeInventory(target._id);
+      recomputeInactiveProperties(target._id);
+      recomputeCreatureByDoc(target);
+    }
+  },
+});
+
+export default castSpellWithSlot;

app/imports/api/creature/actions/doAction.js

@@ -1,20 +1,31 @@
 import SimpleSchema from 'simpl-schema';
 import { ValidatedMethod } from 'meteor/mdg:validated-method';
 import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
-import CreatureProperties, { getCreature } from '/imports/api/creature/CreatureProperties.js';
-import { assertEditPermission } from '/imports/api/creature/creaturePermissions.js';
-import { recomputeCreatureByDoc } from '/imports/api/creature/computation/recomputeCreature.js';
-import { nodesToTree } from '/imports/api/parenting/parenting.js';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import { CreatureLogSchema, insertCreatureLogWork } from '/imports/api/creature/log/CreatureLogs.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import { assertEditPermission } from '/imports/api/creature/creatures/creaturePermissions.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+import nodesToTree from '/imports/api/parenting/nodesToTree.js';
 import applyProperties from '/imports/api/creature/actions/applyProperties.js';
+import recomputeInventory from '/imports/api/creature/denormalise/recomputeInventory.js';
+import recomputeInactiveProperties from '/imports/api/creature/denormalise/recomputeInactiveProperties.js';
+import getAncestorContext from '/imports/api/creature/actions/getAncestorContext.js';
 
 const doAction = new ValidatedMethod({
   name: 'creatureProperties.doAction',
   validate: new SimpleSchema({
     actionId: SimpleSchema.RegEx.Id,
-    targetId: {
+    targetIds: {
+      type: Array,
+      defaultValue: [],
+      maxCount: 10,
+      optional: true,
+    },
+    'targetIds.$': {
       type: String,
       regEx: SimpleSchema.RegEx.Id,
-      optional: true,
     },
   }).validator(),
   mixins: [RateLimiterMixin],
@@ -22,27 +33,51 @@ const doAction = new ValidatedMethod({
     numRequests: 10,
     timeInterval: 5000,
   },
-  run({actionId, targetId}) {
+  run({actionId, targetIds = []}) {
     let action = CreatureProperties.findOne(actionId);
 		// Check permissions
-    let creature = getCreature(action);
+    let creature = getRootCreatureAncestor(action);
+
+    // Build ancestor context
+    let actionContext = getAncestorContext(action);
+
     assertEditPermission(creature, this.userId);
-    let target = undefined;
-    if (targetId) {
-      target = getCreature(targetId);
+    let targets = [];
+    targetIds.forEach(targetId => {
+      let target = Creatures.findOne(targetId);
       assertEditPermission(target, this.userId);
-    }
-		doActionWork({action, creature, target});
-    // Note this only recomputes the top-level creature, not the nearest one
+      targets.push(target);
+    });
+		doActionWork({action, creature, targets, actionContext, method: this});
+
+    // The acting creature might have used ammo
+    recomputeInventory(creature._id);
+
+    // The action might add properties which need to be activated
+    recomputeInactiveProperties(creature._id);
+
+    // recompute creatures
 		recomputeCreatureByDoc(creature);
-    if (target){
+    targets.forEach(target => {
+      recomputeInactiveProperties(target._id);
       recomputeCreatureByDoc(target);
-    }
+    });
   },
 });
 
-function doActionWork({action, creature, target}){
-  let actionContext = {};
+export function doActionWork({
+  action,
+  creature,
+  targets,
+  actionContext = {},
+  method
+}){
+  // Create the log
+  let log = CreatureLogSchema.clean({
+    creatureId: creature._id,
+    creatureName: creature.name,
+  });
+
   let decendantForest = nodesToTree({
     collection: CreatureProperties,
     ancestorId: action._id,
@@ -53,10 +88,12 @@ function doActionWork({action, creature, target}){
   }];
   applyProperties({
     forest: startingForest,
+    actionContext,
     creature,
-    target,
-    actionContext
+    targets,
+    log,
   });
+  insertCreatureLogWork({log, creature, method});
 }
 
 export default doAction;

app/imports/api/creature/actions/doCheck.js

@@ -1,8 +1,8 @@
 import SimpleSchema from 'simpl-schema';
 import { ValidatedMethod } from 'meteor/mdg:validated-method';
 import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
-import Creatures from '/imports/api/creature/Creatures.js';
-import { assertEditPermission } from '/imports/api/creature/creaturePermissions.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import { assertEditPermission } from '/imports/api/creature/creatures/creaturePermissions.js';
 import roll from '/imports/parser/roll.js';
 
 const doCheck = new ValidatedMethod({

app/imports/api/creature/actions/getAncestorContext.js

@@ -0,0 +1,15 @@
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+
+export default function getAncestorContext(prop){
+  // Build ancestor context
+  const actionContext = {};
+  let ancestorIds = prop.ancestors.map(ref => ref.id);
+  CreatureProperties.find({
+    _id: {$in: ancestorIds}
+  }, {
+    sort: {order: 1},
+  }).forEach(ancestor => {
+    actionContext[`#${ancestor.type}`] = ancestor;
+  });
+  return actionContext;
+}

app/imports/api/creature/actions/spendResources.js

@@ -1,27 +1,31 @@
-import CreatureProperties, { damagePropertyWork, adjustQuantityWork } from '/imports/api/creature/CreatureProperties.js';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import { adjustQuantityWork } from '/imports/api/creature/creatureProperties/methods/adjustQuantity.js';
+import { damagePropertyWork } from '/imports/api/creature/creatureProperties/methods/damageProperty.js';
 
-export default function spendResources(action){
+export default function spendResources({prop, log}){
   // Check Uses
-  if (action.usesUsed >= action.usesResult){
+  if (prop.usesUsed >= prop.usesResult){
     throw new Meteor.Error('Insufficient Uses',
-      'This action has no uses left');
+      'This prop has no uses left');
   }
   // Resources
-  if (action.insufficientResources){
+  if (prop.insufficientResources){
     throw new Meteor.Error('Insufficient Resources',
-      'This creature doesn\'t have sufficient resources to perform this action');
+      'This creature doesn\'t have sufficient resources to perform this prop');
   }
   // Items
   let itemQuantityAdjustments = [];
-  action.resources.itemsConsumed.forEach(itemConsumed => {
+  let spendLog = [];
+  let gainLog = [];
+  prop.resources.itemsConsumed.forEach(itemConsumed => {
     if (!itemConsumed.itemId){
       throw new Meteor.Error('Ammo not selected',
-        'No ammo was selected for this action');
+        'No ammo was selected for this prop');
     }
     let item = CreatureProperties.findOne(itemConsumed.itemId);
-    if (!item || item.ancestors[0].id !== action.ancestors[0].id){
+    if (!item || item.ancestors[0].id !== prop.ancestors[0].id){
       throw new Meteor.Error('Ammo not found',
-        'The action\'s ammo was not found on the creature');
+        'The prop\'s ammo was not found on the creature');
     }
     if (!item.equipped){
       throw new Meteor.Error('Ammo not equipped',
@@ -33,19 +37,36 @@ export default function spendResources(action){
       operation: 'increment',
       value: itemConsumed.quantity,
     });
+    let logName = item.name;
+    if (itemConsumed.quantity > 1 || itemConsumed.quantity < -1){
+      logName = item.plural || logName;
+    }
+    if (itemConsumed.quantity > 0){
+      spendLog.push(logName + ': ' + itemConsumed.quantity);
+    } else if (itemConsumed.quantity < 0){
+      gainLog.push(logName + ': ' + -itemConsumed.quantity);
+    }
   });
   // No more errors should be thrown after this line
   // Now that we have confirmed that there are no errors, do actual work
   //Items
   itemQuantityAdjustments.forEach(adjustQuantityWork);
+
   // Use uses
-  CreatureProperties.update(action._id, {
-    $inc: {usesUsed: 1}
-  }, {
-    selector: action
-  });
+  if (prop.usesResult){
+    CreatureProperties.update(prop._id, {
+      $inc: {usesUsed: 1}
+    }, {
+      selector: prop
+    });
+    log.content.push({
+      name: 'Uses left',
+      value: prop.usesResult - (prop.usesUsed || 0) - 1,
+    });
+  }
+
   // Damage stats
-  action.resources.attributesConsumed.forEach(attConsumed => {
+  prop.resources.attributesConsumed.forEach(attConsumed => {
     if (!attConsumed.quantity) return;
     let stat = CreatureProperties.findOne(attConsumed.statId);
     damagePropertyWork({
@@ -53,5 +74,20 @@ export default function spendResources(action){
       operation: 'increment',
       value: attConsumed.quantity,
     });
+    if (attConsumed.quantity > 0){
+      spendLog.push(stat.name + ': ' + attConsumed.quantity);
+    } else if (attConsumed.quantity < 0){
+      gainLog.push(stat.name + ': ' + -attConsumed.quantity);
+    }
+  });
+
+  // Log all the spending
+  if (gainLog.length) log.content.push({
+    name: 'Gained',
+    value: gainLog.join('\n'),
+  });
+  if (spendLog.length) log.content.push({
+    name: 'Spent',
+    value: spendLog.join('\n'),
   });
 }

app/imports/api/creature/archive/ArchivedCreatures.js

@@ -0,0 +1,57 @@
+import SimpleSchema from 'simpl-schema';
+
+// Archived creatures is an immutable collection of creatures that are no longer
+// in use and can be safely archived by the mongoDB hosting service.
+// It keeps the working datasets like creatureProperties much smaller
+// than they would otherwise be.
+let ArchivedCreatures = new Mongo.Collection('archivedCreatures');
+
+// We use blackbox objects for everything:
+// - saves time checking every object against a schema
+// - doesn't accidentaly create indices defined in subschemas
+// - The objects we are archiving have already been checked against their
+//   own schemas
+let ArchivedCreatureSchema = new SimpleSchema({
+  owner: {
+		type: String,
+		regEx: SimpleSchema.RegEx.Id,
+    // The primary index on this collection
+		index: 1,
+	},
+  archiveDate: {
+    type: Date,
+    // Indexed so the archiving system can archive documents when they
+    // get to a certain age
+    index: 1,
+  },
+	creature: {
+    type: Object,
+    blackbox: true,
+  },
+  properties: {
+    type: Array,
+  },
+  'properties.$': {
+    type: Object,
+    blackbox: true,
+  },
+  experiences: {
+    type: Array,
+  },
+  'experiences.$': {
+    type: Object,
+    blackbox: true,
+  },
+  logs: {
+    type: Array,
+  },
+  'logs.$': {
+    type: Object,
+    blackbox: true,
+  },
+});
+
+ArchivedCreatures.attachSchema(ArchivedCreatureSchema);
+
+import '/imports/api/creature/archive/methods/index.js';
+export default ArchivedCreatures;

app/imports/api/creature/archive/methods/archiveCreatures.js

@@ -0,0 +1,66 @@
+import SimpleSchema from 'simpl-schema';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import { assertOwnership } from '/imports/api/creature/creatures/creaturePermissions.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import CreatureLogs from '/imports/api/creature/log/CreatureLogs.js';
+import Experiences from '/imports/api/creature/experience/Experiences.js';
+import { removeCreatureWork } from '/imports/api/creature/creatures/methods/removeCreature.js';
+import ArchivedCreatures from '/imports/api/creature/archive/ArchivedCreatures.js';
+
+function archiveCreature(creatureId){
+  // Build the archive document
+  const creature = Creatures.findOne(creatureId);
+  const properties = CreatureProperties.find({'ancestors.id': creatureId}).fetch();
+  const experiences = Experiences.find({creatureId}).fetch();
+  const logs = CreatureLogs.find({creatureId}).fetch();
+  let archiveCreature = {
+    owner: creature.owner,
+    archiveDate: new Date(),
+    creature,
+    properties,
+    experiences,
+    logs,
+  };
+
+  // Insert it
+  let id = ArchivedCreatures.insert(archiveCreature);
+
+  // Remove the original creature
+  removeCreatureWork(creatureId);
+
+  return id;
+}
+
+const archiveCreatures = new ValidatedMethod({
+  name: 'Creatures.methods.archiveCreatures',
+  validate: new SimpleSchema({
+    creatureIds: {
+      type: Array,
+      max: 10,
+    },
+    'creatureIds.$': {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 1,
+    timeInterval: 5000,
+  },
+  run({creatureIds}) {
+    for (let id of creatureIds){
+      assertOwnership(id, this.userId)
+    }
+    let archivedIds = [];
+    for (let id of creatureIds){
+      let archivedId = archiveCreature(id);
+      archivedIds.push(archivedId);
+    }
+    return archivedIds;
+  },
+});
+
+export default archiveCreatures;

app/imports/api/creature/archive/methods/index.js

@@ -0,0 +1,2 @@
+import '/imports/api/creature/archive/methods/archiveCreatures.js';
+import '/imports/api/creature/archive/methods/restoreCreatures.js';

app/imports/api/creature/archive/methods/restoreCreatures.js

@@ -0,0 +1,77 @@
+import SimpleSchema from 'simpl-schema';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import { assertOwnership } from '/imports/api/sharing/sharingPermissions.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import CreatureLogs from '/imports/api/creature/log/CreatureLogs.js';
+import Experiences from '/imports/api/creature/experience/Experiences.js';
+import ArchivedCreatures from '/imports/api/creature/archive/ArchivedCreatures.js';
+import { removeCreatureWork } from '/imports/api/creature/creatures/methods/removeCreature.js';
+
+function restoreCreature(archiveId){
+  // Get the archive
+  const archivedCreature = ArchivedCreatures.findOne(archiveId);
+
+  // Insert the creature sub documents
+  // They still have their original _id's
+  Creatures.insert(archivedCreature.creature);
+  try {
+    // Add all the properties
+    if (archivedCreature.properties && archivedCreature.properties.length){
+      CreatureProperties.batchInsert(archivedCreature.properties);
+    }
+    if (archivedCreature.experiences && archivedCreature.experiences.length){
+      Experiences.batchInsert(archivedCreature.experiences);
+    }
+    if (archivedCreature.logs && archivedCreature.logs.length){
+      CreatureLogs.batchInsert(archivedCreature.logs);
+    }
+    // Remove the archived creature
+    ArchivedCreatures.remove(archiveId);
+  } catch (e) {
+    // If the above fails, delete the inserted creature
+    removeCreatureWork(archivedCreature.creature._id);
+    throw e;
+  }
+
+  // Do not recompute. The creature was in a computed and ordered state when
+  // we archived it, just restore everything as-is
+
+  return archivedCreature.creature._id;
+}
+
+const restoreCreatures = new ValidatedMethod({
+  name: 'Creatures.methods.restoreCreatures',
+  validate: new SimpleSchema({
+    archiveIds: {
+      type: Array,
+      max: 10,
+    },
+    'archiveIds.$': {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 1,
+    timeInterval: 5000,
+  },
+  run({archiveIds}) {
+    for (let id of archiveIds){
+      let archivedCreature = ArchivedCreatures.findOne(id, {
+        fields: {owner: 1}
+      });
+      assertOwnership(archivedCreature, this.userId)
+    }
+    let creatureIds = [];
+    for (let id of archiveIds){
+      let creatureId = restoreCreature(id);
+      creatureIds.push(creatureId);
+    }
+    return creatureIds;
+  },
+});
+
+export default restoreCreatures;

app/imports/api/creature/computation/afterComputation/embedInlineCalculations.js

@@ -0,0 +1,11 @@
+import INLINE_CALCULATION_REGEX from '/imports/constants/INLINE_CALCULTION_REGEX.js';
+
+export default function embedInlineCalculations(string, calculations){
+  if (!string) return '';
+  if (!calculations) return string;
+  let index = 0;
+  return string.replace(INLINE_CALCULATION_REGEX, substring => {
+    let comp = calculations && calculations[index++];
+    return (comp && 'result' in comp) ? comp.result : substring;
+  });
+}

app/imports/api/creature/computation/afterComputation/evaluateString.js

@@ -1,29 +1,67 @@
 import { parse, CompilationContext } from '/imports/parser/parser.js';
 import ConstantNode from '/imports/parser/parseTree/ConstantNode.js';
+import SymbolNode from '/imports/parser/parseTree/SymbolNode.js';
+import ErrorNode from '/imports/parser/parseTree/ErrorNode.js';
 
-export default function evaluateString(string, scope, fn = 'compile'){
-  let errors = [];
+//TODO replace constants with their parsed node
+
+export default function evaluateString({string, scope, fn = 'compile', context}){
+  if (!context){
+    context = new CompilationContext({});
+  }
   if (!string){
-    errors.push('No string provided');
-    return {result: string, errors};
+    context.storeError('No string provided');
+    return {result: {value: string}, context};
   }
 
-  if (!scope) errors.push('No scope provided');
+  if (!scope) context.storeError('No scope provided');
 
   // Parse the string using mathjs
   let node;
   try {
     node = parse(string);
   } catch (e) {
-    errors.push(e);
-    return {result: string, errors};
+    context.storeError(e);
+    return {result: {value: string}, context};
   }
-
-  let context = new CompilationContext();
+  node = replaceConstants({calc: node, context, scope});
   let result = node[fn](scope, context);
-  if (result instanceof ConstantNode){
-    return {result: result.value, errors: context.errors}
-  } else {
-    return {result: result.toString(), errors: context.errors};
-  }
+  return {result, context};
+}
+
+// Replace constants in the calc with the right ParseNodes
+function replaceConstants({calc, context, scope}){
+  let constFailed = [];
+  calc = calc.replaceNodes(node => {
+    if (!(node instanceof SymbolNode)) return;
+    let constant = scope[node.name];
+    // replace constants that aren't overridden by stats or disabled by a toggle
+    if (constant && constant.type === 'constant'){
+      // Fail if the constant has errors
+      if (constant.errors && constant.errors.length){
+        constFailed.push(node.name);
+        return;
+      }
+      let parsedConstantNode;
+      try {
+        parsedConstantNode = parse(constant.calculation);
+      } catch(e){
+        constFailed.push(node.name);
+        return;
+      }
+      if (!parsedConstantNode) constFailed.push(node.name);
+      return parsedConstantNode;
+    }
+  });
+  constFailed.forEach(name => {
+    context.storeError({
+      type: 'error',
+      message: `${name} is a constant property with parsing errors`
+    });
+  });
+  let failed = !!constFailed.length;
+  if (failed){
+    calc = new ErrorNode({error: 'Failed to replace constants'});
+  }
+  return calc;
 }

app/imports/api/creature/computation/afterComputation/evalutateStringWithEmbeddedCalculations.js

@@ -1,11 +0,0 @@
-import evaluateString from '/imports/api/creature/computation/afterComputation/evaluateString.js';
-
-// Strings can have computations in bracers like so: {computation}
-export default function evalutateStringWithEmbeddedCalculations(string, scope){
-	if (!string) return string;
-  // Compute everything inside bracers
-	return string.replace(/\{([^{}]*)\}/g, function(match, p1){
-    let {result} = evaluateString(p1, scope);
-    return result;
-	});
-}

app/imports/api/creature/computation/applyToggles.js

@@ -1,11 +0,0 @@
-import computeToggle from '/imports/api/creature/computation/computeToggle.js';
-
-export default function applyToggles(prop, memo){
-  prop.computationDetails.toggleAncestors.forEach(toggleId => {
-    let toggle = memo.togglesById[toggleId];
-    computeToggle(toggle, memo);
-    if (!toggle.toggleResult){
-      prop.computationDetails.disabledByToggle = true;
-    }
-  });
-}

app/imports/api/creature/computation/computeEndStepProperty.js

@@ -1,94 +0,0 @@
-import evaluateCalculation from '/imports/api/creature/computation/evaluateCalculation.js';
-
-export default function computeEndStepProperty(prop, memo){
-  switch (prop.type){
-    case 'action':
-    case 'spell':
-      computeAction(prop, memo);
-      break;
-    case 'attack':
-      computeAction(prop, memo);
-      computeAttack(prop, memo);
-      break;
-    case 'savingThrow':
-      computeSavingThrow(prop, memo);
-      break;
-    case 'spellList':
-      computeSpellList(prop, memo);
-      break;
-    case 'propertySlot':
-      computeSlot(prop, memo);
-  }
-}
-
-function computeAction(prop, memo){
-  // Uses
-  let {result, context} = evaluateCalculation(prop.uses, memo);
-  prop.usesResult = result.value;
-  if (context.errors.length){
-    prop.usesErrors = context.errors;
-  } else {
-    delete prop.usesErrors;
-  }
-  prop.insufficientResources = undefined;
-  if (prop.usesUsed >= prop.usesResult){
-    prop.insufficientResources = true;
-  }
-  if (!prop.resources) return;
-  // Attributes consumed
-  prop.resources.attributesConsumed.forEach((attConsumed, i) => {
-    if (attConsumed.variableName){
-      let stat = memo.statsByVariableName[attConsumed.variableName];
-      prop.resources.attributesConsumed[i].statId = stat && stat._id;
-      prop.resources.attributesConsumed[i].statName = stat && stat.name;
-      let available = stat && stat.currentValue || 0;
-      prop.resources.attributesConsumed[i].available = available;
-      if (available < attConsumed.quantity){
-        prop.insufficientResources = true;
-      }
-    }
-  });
-  // Items consumed
-  prop.resources.itemsConsumed.forEach((itemConsumed, i) => {
-    let item = itemConsumed.itemId && memo.equipmentById[itemConsumed.itemId];
-    prop.resources.itemsConsumed[i].itemId = item && item._id;
-    let available = item && item.quantity || 0;
-    prop.resources.itemsConsumed[i].available = available;
-    let name = item && item.name;
-    if (item && item.quantity !== 1 && item.plural){
-      name = item.plural;
-    }
-    prop.resources.itemsConsumed[i].itemName = name;
-    prop.resources.itemsConsumed[i].itemIcon = item && item.icon;
-    prop.resources.itemsConsumed[i].itemColor = item && item.color;
-    if (!item || available < itemConsumed.quantity){
-      prop.insufficientResources = true;
-    }
-  });
-}
-
-function computePropertyField(prop, memo, fieldName, fn){
-  let {result, context} = evaluateCalculation(prop[fieldName], memo, fn);
-  prop[`${fieldName}Result`] = result.value;
-  if (context.errors.length){
-    prop[`${fieldName}Errors`] = context.errors;
-  } else {
-    delete prop[`${fieldName}Errors`];
-  }
-}
-
-function computeAttack(prop, memo){
-  computePropertyField(prop, memo, 'rollBonus');
-}
-
-function computeSavingThrow(prop, memo){
-  computePropertyField(prop, memo, 'dc');
-}
-
-function computeSpellList(prop, memo){
-  computePropertyField(prop, memo, 'maxPrepared');
-}
-
-function computeSlot(prop, memo){
-  computePropertyField(prop, memo, 'slotCondition');
-}

app/imports/api/creature/computation/computeMemo.js

@@ -1,27 +0,0 @@
-import { each, forOwn } from 'lodash';
-import computeLevels from '/imports/api/creature/computation/computeLevels.js';
-import computeStat from '/imports/api/creature/computation/computeStat.js';
-import computeEffect from '/imports/api/creature/computation/computeEffect.js';
-import computeToggle from '/imports/api/creature/computation/computeToggle.js';
-import computeEndStepProperty from '/imports/api/creature/computation/computeEndStepProperty.js';
-
-export default function computeMemo(memo){
-  // Compute level
-  computeLevels(memo);
-  // Compute all stats, even if they are overriden
-  forOwn(memo.statsById, stat => {
-    computeStat (stat, memo);
-  });
-  // Compute effects which didn't end up targeting a stat
-  each(memo.unassignedEffects, effect => {
-    computeEffect(effect, memo);
-  });
-  // Compute toggles which didn't already get computed by dependencies
-  forOwn(memo.togglesById, toggle => {
-    computeToggle(toggle, memo);
-  });
-  // Compute end step properties
-  forOwn(memo.endStepPropsById, prop => {
-    computeEndStepProperty(prop, memo);
-  });
-}

app/imports/api/creature/computation/computeStat.js

@@ -1,40 +0,0 @@
-import combineStat from '/imports/api/creature/computation/combineStat.js';
-import computeEffect from '/imports/api/creature/computation/computeEffect.js';
-import EffectAggregator from '/imports/api/creature/computation/EffectAggregator.js';
-import applyToggles from '/imports/api/creature/computation/applyToggles.js';
-import { each } from 'lodash';
-
-export default function computeStat(stat, memo){
-  // If the stat is already computed, skip it
-  if (stat.computationDetails.computed) return;
-  if (stat.computationDetails.busyComputing){
-    // Trying to compute this stat again while it is already computing.
-    // We must be in a dependency loop.
-    stat.computationDetails.computed = true;
-    stat.value = NaN;
-    stat.computationDetails.busyComputing = false;
-    stat.computationDetails.error = 'dependencyLoop';
-    if (Meteor.isClient) console.warn('dependencyLoop', stat);
-    return;
-  }
-  // Before doing any work, mark this stat as busy
-  stat.computationDetails.busyComputing = true;
-  // Apply any toggles
-  applyToggles(stat, memo);
-
-  if (!stat.computationDetails.disabledByToggle){
-    // Compute and aggregate all the effects
-    let aggregator = new EffectAggregator(stat, memo)
-    each(stat.computationDetails.effects, (effect) => {
-      computeEffect(effect, memo);
-      if (!effect.computationDetails.disabledByToggle){
-        aggregator.addEffect(effect);
-      }
-    });
-    // Conglomerate all the effects to compute the final stat values
-    combineStat(stat, aggregator, memo);
-  }
-  // Mark the attribute as computed
-  stat.computationDetails.computed = true;
-  stat.computationDetails.busyComputing = false;
-}

app/imports/api/creature/computation/engine/ComputationMemo.js

@@ -1,10 +1,13 @@
 import { includes, cloneDeep } from 'lodash';
+import findAncestorByType from '/imports/api/creature/computation/engine/findAncestorByType.js';
 
 // The computation memo is an in-memory data structure used only during the
 // computation process
 export default class ComputationMemo {
   constructor(props, creature){
     this.statsByVariableName = {};
+    this.constantsByVariableName = {};
+    this.constantsById = {};
     this.extraStatsByVariableName = {};
     this.statsById = {};
     this.originalPropsById = {};
@@ -50,13 +53,15 @@ export default class ComputationMemo {
         return true;
       }
     }).forEach((prop) => {
-      // Now add all effects and proficiencies
+      // Now add everything else
       if (prop.type === 'effect'){
         this.addEffect(prop);
       } else if (prop.type === 'proficiency') {
         this.addProficiency(prop);
       } else if (prop.type === 'classLevel'){
         this.addClassLevel(prop);
+      } else if (prop.type === 'constant'){
+        this.addConstant(prop);
       } else {
         this.addEndStepProp(prop);
       }
@@ -71,9 +76,14 @@ export default class ComputationMemo {
       }
     }
   }
+  addConstant(prop){
+    prop = this.registerProperty(prop);
+    this.constantsById[prop._id] = prop;
+  }
   registerProperty(prop){
     this.originalPropsById[prop._id] = cloneDeep(prop);
     this.propsById[prop._id] = prop;
+    prop.dependencies = [];
     prop.computationDetails = propDetails(prop);
     prop.ancestors.forEach(ancestor => {
       if (this.toggleIds.has(ancestor.id)){
@@ -94,29 +104,10 @@ export default class ComputationMemo {
     let variableName = prop.variableName;
     if (!variableName) return;
     let existingStat = this.statsByVariableName[variableName];
+    prop = this.registerProperty(prop);
     if (existingStat){
       existingStat.computationDetails.idsOfSameName.push(prop._id);
-      this.originalPropsById[prop._id] = cloneDeep(prop);
-      if (prop.baseValueCalculation){
-        existingStat.computationDetails.effects.push({
-          operation: 'base',
-          calculation: prop.baseValueCalculation,
-          stats: [variableName],
-          computationDetails: propDetailsByType.effect(),
-          statBase: true,
-        });
-      }
-      if (prop.baseProficiency){
-        existingStat.computationDetails.proficiencies.push({
-          value: prop.baseProficiency,
-          stats: [variableName],
-          computationDetails: propDetailsByType.proficiency(),
-          type: 'proficiency',
-          statBase: true,
-        });
-      }
     } else {
-      prop = this.registerProperty(prop);
       this.statsById[prop._id] = prop;
       this.statsByVariableName[variableName] = prop;
       if (
@@ -138,7 +129,7 @@ export default class ComputationMemo {
     prop = this.registerProperty(prop);
     let targets = this.getEffectTargets(prop);
     targets.forEach(target => {
-      if (target.computationDetails.effects){
+      if (target.computationDetails && target.computationDetails.effects){
         target.computationDetails.effects.push(prop);
       }
     });
@@ -150,7 +141,16 @@ export default class ComputationMemo {
     let targets = new Set();
     if (!prop.stats) return targets;
     prop.stats.forEach((statName) => {
-      let target = this.statsByVariableName[statName];
+      let target;
+      if (statName[0] === '#'){
+        target = findAncestorByType({
+          type: statName.slice(1),
+          prop,
+          memo: this
+        });
+      } else {
+        target = this.statsByVariableName[statName];
+      }
       if (!target) return;
       targets.add(target);
       if (isSkillOperation(prop) && isAbility(target)){
@@ -169,7 +169,9 @@ export default class ComputationMemo {
     prop = this.registerProperty(prop);
     let targets = this.getProficiencyTargets(prop);
     targets.forEach(target => {
-      target.computationDetails.proficiencies.push(prop);
+      if(target.computationDetails.proficiencies){
+        target.computationDetails.proficiencies.push(prop);
+      }
     });
   }
   getProficiencyTargets(prop){
@@ -232,7 +234,6 @@ const propDetailsByType = {
   default(){
     return {
       toggleAncestors: [],
-      disabledByToggle: false,
     };
   },
   toggle(){
@@ -240,7 +241,6 @@ const propDetailsByType = {
       computed: false,
       busyComputing: false,
       toggleAncestors: [],
-      disabledByToggle: false,
     };
   },
   attribute(){
@@ -248,8 +248,8 @@ const propDetailsByType = {
       computed: false,
       busyComputing: false,
       effects: [],
+      proficiencies: [],
       toggleAncestors: [],
-      disabledByToggle: false,
       idsOfSameName: [],
     };
   },
@@ -260,7 +260,6 @@ const propDetailsByType = {
       effects: [],
       proficiencies: [],
       toggleAncestors: [],
-      disabledByToggle: false,
       idsOfSameName: [],
     };
   },
@@ -269,26 +268,22 @@ const propDetailsByType = {
       computed: false,
       busyComputing: false,
       toggleAncestors: [],
-      disabledByToggle: false,
     };
   },
   classLevel(){
     return {
       computed: true,
       toggleAncestors: [],
-      disabledByToggle: false,
     };
   },
   proficiency(){
     return {
       toggleAncestors: [],
-      disabledByToggle: false,
     };
   },
   denormalizedStat(){
     return {
       toggleAncestors: [],
-      disabledByToggle: false,
     };
   }
 }

app/imports/api/creature/computation/engine/EffectAggregator.js

@@ -1,25 +1,13 @@
-import evaluateCalculation from '/imports/api/creature/computation/evaluateCalculation.js';
-
 export default class EffectAggregator{
-  constructor(stat, memo){
-    delete this.baseValueErrors;
-    if (stat.baseValueCalculation){
-      let {result, context} = evaluateCalculation(stat.baseValueCalculation, memo);
-      this.statBaseValue = result.value;
-      if (context.errors.length){
-        this.baseValueErrors = context.errors;
-      }
-      this.base = this.statBaseValue;
-    } else {
-      this.base = 0;
-    }
+  constructor(){
+    this.base = undefined;
     this.add = 0;
     this.mul = 1;
     this.min = Number.NEGATIVE_INFINITY;
     this.max = Number.POSITIVE_INFINITY;
     this.advantage = 0;
     this.disadvantage = 0;
-    this.passiveAdd = 0;
+    this.passiveAdd = undefined;
     this.fail = 0;
     this.set = undefined;
     this.conditional = [];
@@ -32,10 +20,11 @@ export default class EffectAggregator{
     switch(effect.operation){
       case 'base':
         // Take the largest base value
-        this.base = result > this.base ? result : this.base;
-        if (effect.statBase){
-          if (this.statBaseValue === undefined || result > this.statBaseValue){
-            this.statBaseValue = result;
+        if (Number.isFinite(result)){
+          if(Number.isFinite(this.base)){
+            this.base = Math.max(this.base, result);
+          } else {
+            this.base = result;
           }
         }
         break;
@@ -69,6 +58,7 @@ export default class EffectAggregator{
         break;
       case 'passiveAdd':
         // Add all passive adds together
+        if (this.passiveAdd === undefined) this.passiveAdd = 0;
         this.passiveAdd += result;
         break;
       case 'fail':

app/imports/api/creature/computation/engine/applyToggles.js

@@ -0,0 +1,25 @@
+import computeToggle from '/imports/api/creature/computation/engine/computeToggle.js';
+import { union } from 'lodash';
+
+export default function applyToggles(prop, memo){
+  // If it used to be inactive delete those fields
+  if (prop.inactive) prop.inactive = undefined;
+  if (prop.deactivatedByAncestor) prop.deactivatedByAncestor = undefined;
+  if (prop.deactivatedByToggle) prop.deactivatedByToggle = undefined;
+  // Iterate through the toggle ancestors from oldest to nearest
+  prop.computationDetails.toggleAncestors.forEach(toggleId => {
+    let toggle = memo.togglesById[toggleId];
+    computeToggle(toggle, memo);
+    prop.dependencies = union(
+      prop.dependencies,
+      [toggle._id],
+      toggle.dependencies,
+    );
+    // Deactivate if the toggle is false
+    if (!toggle.toggleResult){
+      prop.inactive = true;
+      prop.deactivatedByAncestor = true;
+      prop.deactivatedByToggle = true;
+    }
+  });
+}

app/imports/api/creature/computation/engine/combineStat.js

@@ -1,6 +1,8 @@
-import computeStat from '/imports/api/creature/computation/computeStat.js';
-import applyToggles from '/imports/api/creature/computation/applyToggles.js';
-import evaluateCalculation from '/imports/api/creature/computation/evaluateCalculation.js';
+import computeStat from '/imports/api/creature/computation/engine/computeStat.js';
+import computeProficiency from '/imports/api/creature/computation/engine/computeProficiency.js';
+import evaluateCalculation from '/imports/api/creature/computation/engine/evaluateCalculation.js';
+import stripFloatingPointOddities from '/imports/ui/utility/stripFloatingPointOddities.js';
+import { union } from 'lodash';
 
 export default function combineStat(stat, aggregator, memo){
   if (stat.type === 'attribute'){
@@ -13,7 +15,15 @@ export default function combineStat(stat, aggregator, memo){
 }
 
 function getAggregatorResult(stat, aggregator){
-  let result = (aggregator.base + aggregator.add) * aggregator.mul;
+  let base;
+  if (!Number.isFinite(aggregator.base)){
+    base = stat.baseValue || 0;
+  } else if (!Number.isFinite(stat.baseValue)){
+    base = aggregator.base || 0;
+  } else {
+    base = Math.max(aggregator.base, stat.baseValue);
+  }
+  let result = (base + aggregator.add) * aggregator.mul;
   if (result < aggregator.min) {
     result = aggregator.min;
   }
@@ -25,23 +35,49 @@ function getAggregatorResult(stat, aggregator){
   }
   if (!stat.decimal && Number.isFinite(result)){
     result = Math.floor(result);
+  } else if (Number.isFinite(result)){
+    result = stripFloatingPointOddities(result);
   }
   return result;
 }
 
 function combineAttribute(stat, aggregator, memo){
   stat.value = getAggregatorResult(stat, aggregator);
-  stat.baseValue = aggregator.statBaseValue;
-  stat.baseValueErrors = aggregator.baseValueErrors;
   if (stat.attributeType === 'spellSlot'){
-    let {result, context} = evaluateCalculation(stat.spellSlotLevelCalculation, memo);
+    let {
+      result,
+      context,
+      dependencies
+    } = evaluateCalculation({
+      string: stat.spellSlotLevelCalculation,
+      memo,
+      prop: stat,
+    });
     stat.spellSlotLevelValue = result.value;
     stat.spellSlotLevelErrors = context.errors;
+    stat.dependencies = union(stat.dependencies, dependencies);
   }
   stat.currentValue = stat.value - (stat.damage || 0);
+  // Ability scores get modifiers
   if (stat.attributeType === 'ability') {
     stat.modifier = Math.floor((stat.currentValue - 10) / 2);
+  } else {
+    stat.modifier = undefined;
   }
+  // Hit dice get constitution modifiers
+  stat.constitutionMod = undefined;
+  if (stat.attributeType === 'hitDice') {
+    let conStat = memo.statsByVariableName['constitution'];
+    if (conStat && 'modifier' in conStat){
+      stat.constitutionMod = conStat.modifier;
+      stat.dependencies = union(
+        stat.dependencies,
+        [conStat._id],
+        conStat.dependencies,
+      );
+    }
+  }
+  // Stats that have no effects can be hidden based on a sheet setting
   stat.hide = aggregator.hasNoEffects &&
     stat.baseValue === undefined ||
     undefined
@@ -49,40 +85,70 @@ function combineAttribute(stat, aggregator, memo){
 
 function combineSkill(stat, aggregator, memo){
   // Skills are based on some ability Modifier
-  let ability = memo.statsByVariableName[stat.ability]
+  let ability = stat.ability && memo.statsByVariableName[stat.ability]
   if (stat.ability && ability){
-    if (!ability.computationDetails.computed){
-      computeStat(ability, memo);
-    }
+    computeStat(ability, memo);
     stat.abilityMod = ability.modifier;
+    stat.dependencies = union(
+      stat.dependencies,
+      [ability._id],
+      ability.dependencies,
+    );
+  } else {
+    stat.abilityMod = 0;
   }
   // Combine all the child proficiencies
-  stat.proficiency = stat.baseProficiency || 0;
+  stat.proficiency = 0;
   for (let i in stat.computationDetails.proficiencies){
     let prof = stat.computationDetails.proficiencies[i];
-    applyToggles(prof, memo);
+    computeProficiency(prof, memo);
     if (
-      !prof.computationDetails.disabledByToggle &&
+      !prof.deactivatedByToggle &&
       prof.value > stat.proficiency
     ){
       stat.proficiency = prof.value;
+      stat.dependencies = union(
+        stat.dependencies,
+        [prof._id],
+        prof.dependencies,
+      );
     }
   }
   // Get the character's proficiency bonus to apply
   let profBonusStat = memo.statsByVariableName['proficiencyBonus'];
   let profBonus = profBonusStat && profBonusStat.value;
 
-  if (typeof profBonus !== 'number' && memo.statsByVariableName['level']){
-    let level = memo.statsByVariableName['level'].value;
-    profBonus = Math.ceil(level / 4) + 1;
+  if (profBonusStat){
+    stat.dependencies = union(
+      stat.dependencies,
+      [profBonusStat._id],
+      profBonusStat.dependencies,
+    );
   }
+
+  if (typeof profBonus !== 'number' && memo.statsByVariableName['level']){
+    let levelProp = memo.statsByVariableName['level'];
+    let level = levelProp.value;
+    profBonus = Math.ceil(level / 4) + 1;
+    if (levelProp._id){
+      stat.dependencies = union(stat.dependencies, [levelProp._id]);
+    }
+    if (levelProp.dependencies){
+      stat.dependencies = union(stat.dependencies, levelProp.dependencies);
+    }
+  }
+
   // Multiply the proficiency bonus by the actual proficiency
-  profBonus *= stat.proficiency;
-  // Base value
-  stat.baseValue = aggregator.statBaseValue;
-  stat.baseValueErrors = aggregator.baseValueErrors;
+  if(stat.proficiency === 0.49){
+    // Round down proficiency bonus in the special case
+    profBonus = Math.floor(profBonus * 0.5);
+  } else {
+    profBonus = Math.ceil(profBonus * stat.proficiency);
+  }
+
   // Combine everything to get the final result
-  let result = (aggregator.base + stat.abilityMod + profBonus + aggregator.add) * aggregator.mul;
+  let base = aggregator.base || 0;
+  let result = (base + stat.abilityMod + profBonus + aggregator.add) * aggregator.mul;
   if (result < aggregator.min) result = aggregator.min;
   if (result > aggregator.max) result = aggregator.max;
   if (aggregator.set !== undefined) {

app/imports/api/creature/computation/engine/computeConstant.js

@@ -0,0 +1,12 @@
+import applyToggles from '/imports/api/creature/computation/engine/applyToggles.js';
+
+export default function computeConstant(constant, memo){
+  // Apply any toggles
+  applyToggles(constant, memo);
+  if (constant.deactivatedByToggle) return;
+  if (
+    !memo.constantsByVariableName[constant.variableName]
+  ){
+    memo.constantsByVariableName[constant.variableName] = constant
+  }
+}

app/imports/api/creature/computation/engine/computeEffect.js

@@ -1,5 +1,6 @@
-import evaluateCalculation from '/imports/api/creature/computation/evaluateCalculation.js';
-import applyToggles from '/imports/api/creature/computation/applyToggles.js';
+import evaluateCalculation from '/imports/api/creature/computation/engine/evaluateCalculation.js';
+import applyToggles from '/imports/api/creature/computation/engine/applyToggles.js';
+import { union } from 'lodash';
 
 export default function computeEffect(effect, memo){
   if (effect.computationDetails.computed) return;
@@ -34,8 +35,17 @@ export default function computeEffect(effect, memo){
   } else if(_.contains(['advantage', 'disadvantage', 'fail'], effect.operation)){
     effect.result = 1;
   } else {
-    let {result, context} = evaluateCalculation(effect.calculation, memo);
+    let {
+      result,
+      context,
+      dependencies,
+    } = evaluateCalculation({
+      string: effect.calculation,
+      prop: effect,
+      memo
+    });
     effect.result = result.value;
+    effect.dependencies = union(effect.dependencies, dependencies);
     if (context.errors.length){
       effect.errors = context.errors;
     }

app/imports/api/creature/computation/engine/computeEndStepProperty.js

@@ -0,0 +1,129 @@
+import evaluateCalculation from '/imports/api/creature/computation/engine/evaluateCalculation.js';
+import ConstantNode from '/imports/parser/parseTree/ConstantNode.js';
+import applyToggles from '/imports/api/creature/computation/engine/applyToggles.js';
+import { union } from 'lodash';
+
+export default function computeEndStepProperty(prop, memo){
+  applyToggles(prop, memo);
+
+  switch (prop.type){
+    case 'action':
+    case 'spell':
+      computeAction(prop, memo);
+      break;
+    case 'adjustment':
+    case 'damage':
+      computePropertyField(prop, memo, 'amount', 'compile');
+      break;
+    case 'attack':
+      computeAction(prop, memo);
+      computePropertyField(prop, memo, 'rollBonus');
+      break;
+    case 'savingThrow':
+      computePropertyField(prop, memo, 'dc');
+      break;
+    case 'spellList':
+      computePropertyField(prop, memo, 'maxPrepared');
+      computePropertyField(prop, memo, 'attackRollBonus');
+      computePropertyField(prop, memo, 'dc');
+      break;
+    case 'propertySlot':
+      computePropertyField(prop, memo, 'quantityExpected');
+      computePropertyField(prop, memo, 'slotCondition');
+      break;
+    case 'roll':
+      computePropertyField(prop, memo, 'roll', 'compile');
+      break;
+  }
+}
+
+function computeAction(prop, memo){
+  // Uses
+  let {
+    result,
+    context,
+    dependencies,
+  } = evaluateCalculation({ string: prop.uses, prop, memo});
+  prop.usesResult = result.value;
+  prop.dependencies = union(prop.dependencies, dependencies);
+  if (context.errors.length){
+    prop.usesErrors = context.errors;
+  } else {
+    delete prop.usesErrors;
+  }
+  prop.insufficientResources = undefined;
+  if (prop.usesUsed >= prop.usesResult){
+    prop.insufficientResources = true;
+  }
+  if (!prop.resources) return;
+  // Attributes consumed
+  prop.resources.attributesConsumed.forEach((attConsumed, i) => {
+    if (attConsumed.variableName){
+      let stat = memo.statsByVariableName[attConsumed.variableName];
+      prop.resources.attributesConsumed[i].statId = stat && stat._id;
+      prop.resources.attributesConsumed[i].statName = stat && stat.name;
+      let available = stat && stat.currentValue || 0;
+      prop.resources.attributesConsumed[i].available = available;
+      if (available < attConsumed.quantity){
+        prop.insufficientResources = true;
+      }
+      if (stat){
+        prop.dependencies = union(
+          prop.dependencies,
+          [stat._id],
+          stat.dependencies
+        );
+      }
+    }
+  });
+  // Items consumed
+  prop.resources.itemsConsumed.forEach((itemConsumed, i) => {
+    let item = itemConsumed.itemId ?
+      memo.equipmentById[itemConsumed.itemId] :
+      undefined;
+    let available = item ? item.quantity : 0;
+    prop.resources.itemsConsumed[i].available = available;
+    if (!item || available < itemConsumed.quantity){
+      prop.insufficientResources = true;
+    }
+    if (item){
+      prop.resources.itemsConsumed[i].itemId = item._id;
+      let name = item.name;
+      if (item.quantity !== 1 && item.plural){
+        name = item.plural;
+      }
+      if (name) prop.resources.itemsConsumed[i].itemName = name;
+      if (item.icon) prop.resources.itemsConsumed[i].itemIcon = item.icon;
+      if (item.color) prop.resources.itemsConsumed[i].itemColor = item.color;
+      prop.dependencies = union(
+        prop.dependencies,
+        [item._id],
+        item.dependencies
+      );
+    } else {
+      delete prop.resources.itemsConsumed[i].itemId;
+      delete prop.resources.itemsConsumed[i].itemName;
+      delete prop.resources.itemsConsumed[i].itemIcon;
+      delete prop.resources.itemsConsumed[i].itemColor;
+    }
+  });
+}
+
+function computePropertyField(prop, memo, fieldName, fn){
+  let {
+    result,
+    context,
+    dependencies,
+  } = evaluateCalculation({string: prop[fieldName], prop, memo, fn});
+  if (result instanceof ConstantNode){
+    prop[`${fieldName}Result`] = result.value;
+  } else {
+    prop[`${fieldName}Result`] = result.toString();
+  }
+  prop.dependencies = union(prop.dependencies, dependencies);
+  if (context.errors.length){
+    prop[`${fieldName}Errors`] = context.errors;
+  } else {
+    delete prop[`${fieldName}Errors`];
+  }
+}

app/imports/api/creature/computation/engine/computeInlineCalculations.js

@@ -0,0 +1,40 @@
+import evaluateCalculation from '/imports/api/creature/computation/engine/evaluateCalculation.js';
+import INLINE_CALCULATION_REGEX from '/imports/constants/INLINE_CALCULTION_REGEX.js';
+import ErrorNode from '/imports/parser/parseTree/ErrorNode.js';
+import { union } from 'lodash';
+
+export default function computeInlineCalculations(prop, memo){
+  if (prop.summary){
+    computeInlineCalcsForField(prop, memo, 'summary');
+  }
+  if (prop.description){
+    computeInlineCalcsForField(prop, memo, 'description');
+  }
+}
+
+function computeInlineCalcsForField(prop, memo, field){
+  let string = prop[field];
+  let inlineComputations = [];
+  let matches = string.matchAll(INLINE_CALCULATION_REGEX);
+  for (let match of matches){
+    let calculation = match[1];
+    let {
+      result,
+      context,
+      dependencies,
+    } = evaluateCalculation({string: calculation, prop, memo, fn: 'compile'});
+    if (result instanceof ErrorNode){
+      result = '`Calculation Error`';
+    }
+    let computation = {
+      calculation,
+      result: result && result.toString(),
+    };
+    if (context.errors.length){
+      computation.errors = context.errors;
+    }
+    inlineComputations.push(computation);
+    prop.dependencies = union(prop.dependencies, dependencies);
+  }
+  prop[`${field}Calculations`] = inlineComputations;
+}

app/imports/api/creature/computation/engine/computeLevels.js

@@ -1,4 +1,5 @@
-import { forOwn, has } from 'lodash';
+import { forOwn, has, union } from 'lodash';
+import applyToggles from '/imports/api/creature/computation/engine/applyToggles.js';
 
 export default function computeLevels(memo){
   computeClassLevels(memo);
@@ -7,6 +8,13 @@ export default function computeLevels(memo){
 
 function computeClassLevels(memo){
   forOwn(memo.classLevelsById, classLevel => {
+    applyToggles(classLevel, memo);
+    //  class levels are mutually dependent
+    classLevel.dependencies = union(
+      classLevel.dependencies,
+      Object.keys(memo.classLevelsById)
+    );
+    if (classLevel.deactivatedByToggle) return;
     let name = classLevel.variableName;
     let stat = memo.statsByVariableName[name];
     if (!stat){
@@ -24,9 +32,10 @@ function computeClassLevels(memo){
 
 function computeTotalLevel(memo){
   let currentLevel = memo.statsByVariableName['level'];
-  if (!currentLevel){
+  if (!currentLevel || currentLevel.deactivatedByToggle){
     currentLevel = {
       value: 0,
+      dependencies: [],
       computationDetails: {
         builtIn: true,
         computed: true,
@@ -38,7 +47,20 @@ function computeTotalLevel(memo){
   if (!currentLevel.computationDetails.builtIn) return;
   let level = 0;
   for (let name in memo.classes){
-    level += memo.classes[name].level || 0;
+    let cls = memo.classes[name];
+    level += cls.level || 0;
+    if (cls._id){
+      currentLevel.dependencies = union(
+        currentLevel.dependencies,
+        [cls._id]
+      )
+    }
+    if (cls.dependencies){
+      currentLevel.dependencies = union(
+        currentLevel.dependencies,
+        cls.dependencies,
+      )
+    }
   }
-  memo.statsByVariableName['level'].value = level;
+  currentLevel.value = level;
 }

app/imports/api/creature/computation/engine/computeMemo.js

@@ -0,0 +1,37 @@
+import { each, forOwn } from 'lodash';
+import computeLevels from '/imports/api/creature/computation/engine/computeLevels.js';
+import computeStat from '/imports/api/creature/computation/engine/computeStat.js';
+import computeEffect from '/imports/api/creature/computation/engine/computeEffect.js';
+import computeToggle from '/imports/api/creature/computation/engine/computeToggle.js';
+import computeEndStepProperty from '/imports/api/creature/computation/engine/computeEndStepProperty.js';
+import computeInlineCalculations from '/imports/api/creature/computation/engine/computeInlineCalculations.js';
+import computeConstant from '/imports/api/creature/computation/engine/computeConstant.js';
+
+export default function computeMemo(memo){
+  // Compute level
+  computeLevels(memo);
+  // Compute all constants that could be used
+  forOwn(memo.constantsById, constant => {
+    computeConstant (constant, memo);
+  });
+  // Compute all stats, even if they are overriden
+  forOwn(memo.statsById, stat => {
+    computeStat (stat, memo);
+  });
+  // Compute effects which didn't end up targeting a stat
+  each(memo.unassignedEffects, effect => {
+    computeEffect(effect, memo);
+  });
+  // Compute toggles which didn't already get computed by dependencies
+  forOwn(memo.togglesById, toggle => {
+    computeToggle(toggle, memo);
+  });
+  // Compute end step properties
+  forOwn(memo.endStepPropsById, prop => {
+    computeEndStepProperty(prop, memo);
+  });
+  // Compute inline calculations
+  forOwn(memo.propsById, prop => {
+    computeInlineCalculations(prop, memo);
+  });
+}

app/imports/api/creature/computation/engine/computeProficiency.js

@@ -0,0 +1,23 @@
+import applyToggles from '/imports/api/creature/computation/engine/applyToggles.js';
+
+export default function computeEffect(proficiency, memo){
+  if (proficiency.computationDetails.computed) return;
+  if (proficiency.computationDetails.busyComputing){
+    // Trying to compute this proficiency again while it is already computing.
+    // We must be in a dependency loop.
+    proficiency.computationDetails.computed = true;
+    proficiency.result = NaN;
+    proficiency.computationDetails.busyComputing = false;
+    proficiency.computationDetails.error = 'dependencyLoop';
+    if (Meteor.isClient) console.warn('dependencyLoop', proficiency);
+    return;
+  }
+  // Before doing any work, mark this proficiency as busy
+  proficiency.computationDetails.busyComputing = true;
+
+  // Apply any toggles
+  applyToggles(proficiency, memo);
+
+  proficiency.computationDetails.computed = true;
+  proficiency.computationDetails.busyComputing = false;
+}

app/imports/api/creature/computation/engine/computeStat.js

@@ -0,0 +1,162 @@
+import combineStat from '/imports/api/creature/computation/engine/combineStat.js';
+import computeEffect from '/imports/api/creature/computation/engine/computeEffect.js';
+import EffectAggregator from '/imports/api/creature/computation/engine/EffectAggregator.js';
+import evaluateCalculation from '/imports/api/creature/computation/engine/evaluateCalculation.js';
+import applyToggles from '/imports/api/creature/computation/engine/applyToggles.js';
+import { each, union, without } from 'lodash';
+
+export default function computeStat(stat, memo){
+  // If the stat is already computed, skip it
+  if (stat.computationDetails.computed) return;
+  if (stat.computationDetails.busyComputing){
+    // Trying to compute this stat again while it is already computing.
+    // We must be in a dependency loop.
+    stat.computationDetails.computed = true;
+    stat.value = NaN;
+    stat.computationDetails.busyComputing = false;
+    stat.computationDetails.error = 'dependencyLoop';
+    if (Meteor.isClient) console.warn('dependencyLoop', stat);
+    return;
+  }
+  // Before doing any work, mark this stat as busy
+  stat.computationDetails.busyComputing = true;
+
+  let effects = stat.computationDetails.effects || [];
+  let proficiencies = stat.computationDetails.proficiencies || [];
+
+  // Get references to all the stats that share the variable name
+  let sameNameStats
+
+  if (stat.computationDetails.idsOfSameName){
+    sameNameStats = stat.computationDetails.idsOfSameName.map(
+      id => memo.propsById[id]
+    );
+  } else {
+    sameNameStats = [];
+  }
+
+  let allStats = [stat, ...sameNameStats];
+
+  // Decide which stat is the last active stat
+  // The last active stat is considered the cannonical stat
+  let lastActiveStat;
+  allStats.forEach(candidateStat => {
+    applyToggles(candidateStat, memo);
+    if (!candidateStat.inactive) lastActiveStat = candidateStat;
+    candidateStat.overridden = undefined;
+  });
+  if (!lastActiveStat){
+    delete memo.statsByVariableName[stat.variableName];
+    return;
+  }
+  // Make sure the active stat has all the effects and proficiencies
+  lastActiveStat.computationDetails.effects = effects;
+  lastActiveStat.computationDetails.proficiencies = proficiencies;
+
+  // Update the memo's stat with the chosen stat
+  memo.statsByVariableName[stat.variableName] = lastActiveStat;
+
+  // Recreate list of the non-cannonical stats
+  sameNameStats = without(allStats, lastActiveStat);
+
+  sameNameStats.forEach(statInstance => {
+    // Mark the non-cannonical stats as overridden
+    statInstance.overridden = true;
+
+    // Apply the cannonical damage
+    statInstance.damage = lastActiveStat.damage;
+  });
+
+  let baseDependencies = [];
+  allStats.forEach(statInstance => {
+    // Add this stat and its deps to the dependencies
+    baseDependencies = union(
+      baseDependencies,
+      [statInstance._id],
+      statInstance.dependencies,
+    );
+
+    // Apply all the base proficiencies
+    if (statInstance.baseProficiency && !statInstance.inactive){
+      proficiencies.push({
+        value: statInstance.baseProficiency,
+        stats: [statInstance.variableName],
+        type: 'proficiency',
+        dependencies: statInstance.overridden ?
+          union(statInstance.dependencies, [statInstance._id]) :
+          [],
+        computationDetails: {
+          computed: true,
+        }
+      });
+    }
+
+    // Compute each active stat's baseValue calculation and apply it
+    if (!statInstance.inactive) {
+      delete statInstance.baseValueErrors;
+      let {
+        result,
+        context,
+        dependencies
+      } = evaluateCalculation({
+        string: statInstance.baseValueCalculation,
+        prop: statInstance,
+        memo
+      });
+      result.value = +result.value;
+      if (!isNaN(result.value)){
+        statInstance.baseValue = result.value;
+      } else {
+        statInstance.baseValue = undefined;
+      }
+      statInstance.dependencies = union(statInstance.dependencies, dependencies);
+      if (context.errors.length){
+        statInstance.baseValueErrors = context.errors;
+      }
+      // Apply all the base values
+      if (Number.isFinite(statInstance.baseValue)){
+        effects.push({
+          operation: 'base',
+          calculation: statInstance.baseValueCalculation,
+          result: statInstance.baseValue,
+          stats: [statInstance.variableName],
+          dependencies: statInstance.overridden ?
+          union(statInstance.dependencies, [statInstance._id]) :
+          [],
+          computationDetails: {
+            computed: true,
+          },
+        });
+      }
+    }
+  });
+
+  // Compute and aggregate all the effects
+  let aggregator = new EffectAggregator();
+  let effectDeps = [];
+  each(effects, (effect) => {
+    // Compute
+    computeEffect(effect, memo);
+    if (effect.deactivatedByToggle) return;
+
+    // dependencies
+    if (effect._id) effectDeps = union(effectDeps, [effect._id]);
+    effectDeps = union(effectDeps, effect.dependencies);
+
+    // Add computed effect to aggregator
+    aggregator.addEffect(effect);
+  });
+
+  // Combine the effects into the stats
+  allStats.forEach(statInstance => {
+    // Conglomerate all the effects to compute the final stat values
+    combineStat(statInstance, aggregator, memo);
+    // Mark the stats as computed
+    statInstance.computationDetails.computed = true;
+    statInstance.computationDetails.busyComputing = false;
+    // Only the active stat instance depeneds on the effects
+    if (!statInstance.overridden){
+      statInstance.dependencies = union(statInstance.dependencies, effectDeps);
+    }
+  });
+}

app/imports/api/creature/computation/engine/computeToggle.js

@@ -1,4 +1,6 @@
-import evaluateCalculation from '/imports/api/creature/computation/evaluateCalculation.js';
+import evaluateCalculation from '/imports/api/creature/computation/engine/evaluateCalculation.js';
+import applyToggles from '/imports/api/creature/computation/engine/applyToggles.js';
+import { union } from 'lodash';
 
 export default function computeToggle(toggle, memo){
   if (toggle.computationDetails.computed) return;
@@ -15,6 +17,9 @@ export default function computeToggle(toggle, memo){
   // Before doing any work, mark this toggle as busy
   toggle.computationDetails.busyComputing = true;
 
+  // Apply any parent toggles
+  applyToggles(toggle, memo);
+
   // Do work
   delete toggle.errors;
   if (toggle.enabled){
@@ -26,12 +31,25 @@ export default function computeToggle(toggle, memo){
   } else if (Number.isFinite(+toggle.condition)){
     toggle.toggleResult = !!+toggle.condition;
   } else {
-    let {result, context} = evaluateCalculation(toggle.condition, memo);
+    let {
+      result,
+      context,
+      dependencies,
+    } = evaluateCalculation({string: toggle.condition, prop: toggle, memo});
     toggle.toggleResult = !!result.value;
+    toggle.dependencies = union(
+      toggle.dependencies,
+      dependencies,
+    );
     if (context.errors.length){
       toggle.errors = context.errors;
     }
   }
+  if (!toggle.toggleResult){
+    toggle.inactive = true;
+    toggle.deactivatedBySelf = true;
+    toggle.deactivatedByToggle = true;
+  }
   toggle.computationDetails.computed = true;
   toggle.computationDetails.busyComputing = false;
 }

app/imports/api/creature/computation/engine/evaluateCalculation.js

@@ -0,0 +1,137 @@
+import computeStat from '/imports/api/creature/computation/engine/computeStat.js';
+import { prettifyParseError, parse, CompilationContext } from '/imports/parser/parser.js';
+import SymbolNode from '/imports/parser/parseTree/SymbolNode.js';
+import AccessorNode from '/imports/parser/parseTree/AccessorNode.js';
+import ConstantNode from '/imports/parser/parseTree/ConstantNode.js';
+import ErrorNode from '/imports/parser/parseTree/ErrorNode.js';
+import findAncestorByType from '/imports/api/creature/computation/engine/findAncestorByType.js';
+import { union } from 'lodash';
+
+/* Convert a calculation into a constant output and errors*/
+export default function evaluateCalculation({
+  string,
+  prop,
+  memo,
+  fn = 'reduce',
+}){
+  let dependencies = [];
+  let context = new CompilationContext();
+  if (!string) return {
+    result: new ConstantNode({value: string, type: 'string'}),
+    context,
+    dependencies,
+  };
+  if (typeof string !== 'string'){
+    string = string.toString();
+  }
+  // Parse the string
+  let calc;
+  try {
+    calc = parse(string);
+  } catch (e) {
+    let error = prettifyParseError(e);
+    return {
+      result: new ErrorNode({context, error}),
+      context,
+      dependencies,
+    };
+  }
+
+  // Replace constants with their parsed constant
+  let replaceResults = replaceConstants({
+    calc, memo, prop, dependencies, context
+  });
+  dependencies = replaceResults.dependencies;
+  calc = replaceResults.calc;
+  if (replaceResults.failed){
+    return {
+      result: new ConstantNode({value: string, type: 'string'}),
+      context,
+      dependencies,
+    };
+  }
+
+  // Ensure all symbol nodes are defined and computed
+  dependencies = computeSymbols({calc, memo, prop, dependencies})
+
+  // Evaluate
+  let result = calc[fn](memo.statsByVariableName, context);
+  return {result, context, dependencies};
+}
+
+// Replace constants in the calc with the right ParseNodes
+function replaceConstants({calc, memo, prop, dependencies, context}){
+  let constFailed = [];
+  calc = calc.replaceNodes(node => {
+    if (!(node instanceof SymbolNode)) return;
+    let stat, constant;
+    if (node.name[0] !== '#'){
+      stat = memo.statsByVariableName[node.name]
+      constant = memo.constantsByVariableName[node.name];
+    } else if (node.name === '#constant'){
+      constant = findAncestorByType({type: 'constant', prop, memo});
+    }
+    // replace constants that aren't overridden by stats or disabled by a toggle
+    if (constant && !constant.deactivatedByToggle && !stat){
+      dependencies = union(dependencies, [
+        constant._id,
+        ...constant.dependencies
+      ]);
+      // Fail if the constant has errors
+      if (constant.errors && constant.errors.length){
+        constFailed.push(node.name);
+        return;
+      }
+      let parsedConstantNode;
+      try {
+        parsedConstantNode = parse(constant.calculation);
+      } catch(e){
+        constFailed.push(node.name);
+        return;
+      }
+      if (!parsedConstantNode) constFailed.push(node.name);
+      return parsedConstantNode;
+    }
+  });
+  constFailed.forEach(name => {
+    context.storeError({
+      type: 'error',
+      message: `${name} is a constant property with parsing errors`
+    });
+  });
+  let failed = !!constFailed.length;
+  if (failed){
+    calc = new ErrorNode({error: 'Failed to replace constants'});
+  }
+  return { failed, dependencies, calc };
+}
+
+  // Ensure all symbol nodes are defined and computed
+function computeSymbols({calc, memo, prop, dependencies}){
+  calc.traverse(node => {
+    if (node instanceof SymbolNode || node instanceof AccessorNode){
+      let stat;
+      // References up the tree start with #
+      if (node.name[0] === '#'){
+        stat = findAncestorByType({type: node.name.slice(1), prop, memo});
+        memo.statsByVariableName[node.name] = stat;
+      } else {
+        stat = memo.statsByVariableName[node.name];
+      }
+      if (stat && stat.computationDetails && !stat.computationDetails.computed){
+        computeStat(stat, memo);
+      }
+      if (stat){
+        if (stat.dependencies){
+          dependencies = union(dependencies, [
+            stat._id || node.name,
+            ...stat.dependencies
+          ]);
+        } else {
+          dependencies = union(dependencies, [stat._id || node.name]);
+        }
+      }
+    }
+  });
+  return dependencies;
+}

app/imports/api/creature/computation/engine/findAncestorByType.js

@@ -0,0 +1,10 @@
+export default function findAncestorByType({type, prop, memo}){
+  if (!prop || !prop.ancestors) return;
+  let ancestor;
+  for (let i = prop.ancestors.length - 1; i >= 0; i--){
+    ancestor = memo.propsById[prop.ancestors[i].id];
+    if (ancestor && ancestor.type === type){
+      return ancestor;
+    }
+  }
+}

app/imports/api/creature/computation/engine/getComputationProperties.js

@@ -0,0 +1,24 @@
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+
+export default function getComputationProperties(creatureId){
+  // Find all the relevant properties
+  return CreatureProperties.find({
+    'ancestors.id': creatureId,
+    removed: {$ne: true},
+    $or: [
+      // All active properties
+      {inactive: {$ne: true}},
+      // Unless they were deactivated because of a toggle
+      {deactivatedByToggle: true},
+    ]
+  }, {
+    // Filter out fields never used by calculations
+    fields: {
+      icon: 0,
+    },
+    // Obey tree order
+    sort: {
+      order: 1,
+    }
+  }).fetch();
+}

app/imports/api/creature/computation/engine/getDependentProperties.js

@@ -0,0 +1,51 @@
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import { union } from 'lodash';
+
+export default function getDependentProperties({
+  creatureId,
+  propertyIds,
+  propertiesDependedAponIds,
+ }){
+  // find ids of all dependant toggles that have conditions, even if inactive
+  let toggleIds = CreatureProperties.find({
+    'ancestors.id': creatureId,
+    type: 'toggle',
+    removed: {$ne: true},
+    condition: { $exists: true },
+    dependencies: {$in: propertyIds},
+  }, {
+    fields: {_id: 1},
+  }).map(t => t._id);
+  // Find all the dependant properties
+  let props = CreatureProperties.find({
+    'ancestors.id': creatureId,
+    removed: {$ne: true},
+    dependencies: {$in: propertyIds},
+    $or: [
+      // All active properties
+      {inactive: {$ne: true}},
+      // All active and inactive toggles with conditions
+      // Same as {$in: toggleIds}, but should be slightly faster
+      {type: 'toggle', condition: { $exists: true }},
+      // All decendents of the above toggles
+      {'ancestors.id': {$in: toggleIds}},
+    ]
+  }, { fields: {_id: 1, dependencies: 1} }).fetch();
+  // Add all the properties that changing props depend on, but haven't yet been
+  // included to make an array of every property we need
+  let allConnectedPropIds = [...propertyIds, ...propertiesDependedAponIds];
+  props.forEach(prop => {
+    allConnectedPropIds = union(
+      allConnectedPropIds,
+      prop.dependencies,
+      [prop._id]);
+  });
+  // Add on all the properties and the objects they depend apon
+  return CreatureProperties.find({
+    _id: {$in: allConnectedPropIds}
+  }, {
+    // Ignore fields not used in computations
+    fields: {icon: 0},
+    sort: {order: 1},
+  }).fetch();
+}

app/imports/api/creature/computation/engine/writeAlteredProperties.js

@@ -0,0 +1,118 @@
+import { Meteor } from 'meteor/meteor'
+import { isEqual, forOwn } from 'lodash';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import propertySchemasIndex from '/imports/api/properties/computedOnlyPropertySchemasIndex.js';
+
+export default function writeAlteredProperties(memo){
+  let bulkWriteOperations = [];
+  // Loop through all properties on the memo
+  forOwn(memo.propsById, changed => {
+    let schema = propertySchemasIndex[changed.type];
+    if (!schema){
+      console.warn('No schema for ' + changed.type);
+      return;
+    }
+    let id = changed._id;
+    let op = undefined;
+    let original = memo.originalPropsById[id];
+    let keys = [
+      'dependencies',
+      'inactive',
+      'deactivatedBySelf',
+      'deactivatedByAncestor',
+      'deactivatedByToggle',
+      'damage',
+      ...schema.objectKeys(),
+    ];
+    op = addChangedKeysToOp(op, keys, original, changed);
+    if (op){
+      bulkWriteOperations.push(op);
+    }
+  });
+  writePropertiesSequentially(bulkWriteOperations);
+}
+
+function addChangedKeysToOp(op, keys, original, changed) {
+  // Loop through all keys that can be changed by computation
+  // and compile an operation that sets all those keys
+  for (let key of keys){
+    if (!isEqual(original[key], changed[key])){
+      if (!op) op = newOperation(original._id, changed.type);
+      let value = changed[key];
+      if (value === undefined){
+        // Unset values that become undefined
+        addUnsetOp(op, key);
+      } else {
+        // Set values that changed to something else
+        addSetOp(op, key, value);
+      }
+    }
+  }
+  return op;
+}
+
+function newOperation(_id, type){
+  let newOp = {
+    updateOne: {
+      filter: {_id},
+      update: {},
+    }
+  };
+  if (Meteor.isClient){
+    newOp.type = type;
+  }
+  return newOp;
+}
+
+function addSetOp(op, key, value){
+  if (op.updateOne.update.$set){
+    op.updateOne.update.$set[key] = value;
+  } else {
+    op.updateOne.update.$set = {[key]: value};
+  }
+}
+
+function addUnsetOp(op, key){
+  if (op.updateOne.update.$unset){
+    op.updateOne.update.$unset[key] = 1;
+  } else {
+    op.updateOne.update.$unset = {[key]: 1};
+  }
+}
+
+// We use this instead of bulkWriteProperties because it functions with latency
+// compensation without needing to roll back changes, which causes multiple
+// expensive redraws of the character sheet
+function writePropertiesSequentially(bulkWriteOps){
+  bulkWriteOps.forEach(op => {
+    let updateOneOrMany = op.updateOne || op.updateMany;
+    CreatureProperties.update(updateOneOrMany.filter, updateOneOrMany.update, {
+      // The bulk code is bypassing validation, so do the same here
+      // selector: {type: op.type} // include this if bypass is off
+      bypassCollection2: true,
+    });
+  });
+}
+
+// This is more efficient on the database, but significantly less efficient
+// in the UI because of incompatibility with latency compensation. If the
+// duplicate redraws can be fixed, this is a strictly better way of processing
+// writes
+function bulkWriteProperties(bulkWriteOps){
+  if (!bulkWriteOps.length) return;
+  // bulkWrite is only available on the server
+  if (Meteor.isServer){
+    CreatureProperties.rawCollection().bulkWrite(
+      bulkWriteOps,
+      {ordered : false},
+      function(e){
+        if (e) {
+          console.error('Bulk write failed: ');
+          console.error(e);
+        }
+      }
+    );
+  } else {
+    writePropertiesSequentially(bulkWriteOps);
+  }
+}

app/imports/api/creature/computation/engine/writeCreatureVariables.js

@@ -0,0 +1,59 @@
+import { pick, forOwn } from 'lodash';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import VERSION from '/imports/constants/VERSION.js';
+
+export default function writeCreatureVariables(memo, creatureId, fullRecompute = true) {
+  const fields = [
+    'ability',
+    'abilityMod',
+    'advantage',
+    'attributeType',
+    'baseProficiency',
+    'baseValue',
+    'calculation',
+    'conditionalBenefits',
+    'currentValue',
+    'damage',
+    'decimal',
+    'fail',
+    'level',
+    'modifier',
+    'name',
+    'passiveBonus',
+    'proficiency',
+    'reset',
+    'resetMultiplier',
+    'rollBonuses',
+    'skillType',
+    'spellSlotLevelValue',
+    'type',
+    'value',
+  ];
+
+  if (fullRecompute){
+    memo.creatureVariables = {};
+    forOwn(memo.statsByVariableName, (stat, variableName) => {
+      // Don't save context variables
+      if (variableName[0] === '#') return;
+      let condensedStat = pick(stat, fields);
+      memo.creatureVariables[variableName] = condensedStat;
+    });
+    forOwn(memo.constantsByVariableName, (stat, variableName) => {
+      let condensedStat = pick(stat, fields);
+      if (!memo.creatureVariables[variableName]){
+        memo.creatureVariables[variableName] = condensedStat;
+      }
+    });
+    Creatures.update(creatureId, {$set: {
+      variables: memo.creatureVariables,
+      computeVersion: VERSION,
+    }});
+  } else {
+    let $set = {};
+    forOwn(memo.statsByVariableName, (stat, variableName) => {
+      let condensedStat = pick(stat, fields);
+      $set[`variables.${variableName}`] = condensedStat;
+    });
+    Creatures.update(creatureId, {$set});
+  }
+}

app/imports/api/creature/computation/evaluateCalculation.js

@@ -1,41 +0,0 @@
-import computeStat from '/imports/api/creature/computation/computeStat.js';
-import { parse, CompilationContext } from '/imports/parser/parser.js';
-import SymbolNode from '/imports/parser/parseTree/SymbolNode.js';
-import AccessorNode from '/imports/parser/parseTree/AccessorNode.js';
-import ConstantNode from '/imports/parser/parseTree/ConstantNode.js';
-
-/* Convert a calculation into a constant output and errors*/
-export default function evaluateCalculation(string, memo, fn = 'reduce'){
-  if (!string) return {
-    context: {errors: []},
-    result: new ConstantNode({value: string, type: 'string'}),
-  };
-  let errors = [];
-  // Parse the string
-  let calc;
-  try {
-    calc = parse(string);
-  } catch (e) {
-    errors.push({
-      type: 'parsing',
-      message: e.message || e
-    });
-    return {
-      context: {errors},
-      result: new ConstantNode({value: string, type: 'string'}),
-    };
-  }
-  // Ensure all symbol nodes are defined and coputed
-  calc.traverse(node => {
-    if (node instanceof SymbolNode || node instanceof AccessorNode){
-      let stat = memo.statsByVariableName[node.name];
-      if (stat && !stat.computationDetails.computed){
-        computeStat(stat, memo);
-      }
-    }
-  });
-  // Evaluate
-  let context = new CompilationContext();
-  let result = calc[fn](memo.statsByVariableName, context);
-  return {result, context};
-}

app/imports/api/creature/computation/methods/recomputeCreature.js

@@ -1,16 +1,18 @@
 import { ValidatedMethod } from 'meteor/mdg:validated-method';
 import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
 import SimpleSchema from 'simpl-schema';
-import { assertEditPermission } from '/imports/api/creature/creaturePermissions.js';
-import ComputationMemo from '/imports/api/creature/computation/ComputationMemo.js';
-import CreatureProperties from '/imports/api/creature/CreatureProperties.js';
-import computeMemo from '/imports/api/creature/computation/computeMemo.js';
-import writeAlteredProperties from '/imports/api/creature/computation/writeAlteredProperties.js';
-import writeCreatureVariables from '/imports/api/creature/computation/writeCreatureVariables.js';
+import { assertEditPermission } from '/imports/api/creature/creatures/creaturePermissions.js';
+import ComputationMemo from '/imports/api/creature/computation/engine/ComputationMemo.js';
+import getComputationProperties from '/imports/api/creature/computation/engine/getComputationProperties.js';
+import computeMemo from '/imports/api/creature/computation/engine/computeMemo.js';
+import writeAlteredProperties from '/imports/api/creature/computation/engine/writeAlteredProperties.js';
+import writeCreatureVariables from '/imports/api/creature/computation/engine/writeCreatureVariables.js';
 import { recomputeDamageMultipliersById } from '/imports/api/creature/denormalise/recomputeDamageMultipliers.js';
-import recomputeInactiveProperties from '/imports/api/creature/denormalise/recomputeInactiveProperties.js';
 import recomputeSlotFullness from '/imports/api/creature/denormalise/recomputeSlotFullness.js';
-import Creatures from '/imports/api/creature/Creatures.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import getDependentProperties from '/imports/api/creature/computation/engine/getDependentProperties.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import recomputeInactiveProperties from '/imports/api/creature/denormalise/recomputeInactiveProperties.js';
 
 export const recomputeCreature = new ValidatedMethod({
 
@@ -37,23 +39,6 @@ export const recomputeCreature = new ValidatedMethod({
 
 });
 
-const calculationPropertyTypes = [
-  'attribute',
-  'skill',
-  'effect',
-  'proficiency',
-  'classLevel',
-  'toggle',
-  'item',
-  // End step types
-  'action',
-  'attack',
-  'savingThrow',
-  'spellList',
-  'spell',
-  'propertySlot',
-];
-
 export function recomputeCreatureById(creatureId){
   let creature = Creatures.findOne(creatureId);
   recomputeCreatureByDoc(creature);
@@ -97,38 +82,8 @@ export function recomputeCreatureById(creatureId){
  */
 export function recomputeCreatureByDoc(creature){
   const creatureId = creature._id;
-  // find all toggles that have conditions, even if they are inactive
-  let toggleIds = CreatureProperties.find({
-    'ancestors.id': creatureId,
-    type: 'toggle',
-    removed: {$ne: true},
-    condition: { $exists: true },
-  }, {
-    fields: {_id: 1},
-  }).map(t => t._id);
-  // Find all the active properties
-  let props = CreatureProperties.find({
-    'ancestors.id': creatureId,
-    removed: {$ne: true},
-    type: {$in: calculationPropertyTypes},
-    $or: [
-      {inactive: {$ne: true}},
-      // But also the inactive computed toggles and their decendants
-      {'ancestors.id': {$in: toggleIds}},
-      {_id: {$in: toggleIds}},
-    ]
-  }, {
-    fields: { // Filter out potentially large fields
-      icon: 0,
-      summary: 0,
-      description: 0,
-    },
-    sort: {
-      order: 1,
-    }
-  }).fetch();
+  let props = getComputationProperties(creatureId);
   let computationMemo = new ComputationMemo(props, creature);
-  recomputeInactiveProperties(creatureId);
   computeMemo(computationMemo);
   writeAlteredProperties(computationMemo);
   writeCreatureVariables(computationMemo, creatureId);
@@ -136,3 +91,30 @@ export function recomputeCreatureByDoc(creature){
   recomputeSlotFullness(creatureId);
   return computationMemo;
 }
+
+export function recomputePropertyDependencies(property){
+  let creature = getRootCreatureAncestor(property);
+  recomputeCreatureByDependencies({
+    creature,
+    propertyIds: [property._id],
+    propertiesDependedAponIds: property.dependencies,
+  });
+}
+
+export function recomputeCreatureByDependencies({
+  creature,
+  propertyIds,
+  propertiesDependedAponIds
+}){
+  let props = getDependentProperties({
+    creatureId: creature._id,
+    propertyIds,
+    propertiesDependedAponIds,
+  });
+  let computationMemo = new ComputationMemo(props, creature);
+  computeMemo(computationMemo);
+  writeAlteredProperties(computationMemo);
+  writeCreatureVariables(computationMemo, creature._id, false)
+  recomputeInactiveProperties(creature._id);
+  return computationMemo;
+}

app/imports/api/creature/computation/writeAlteredProperties.js

@@ -1,129 +0,0 @@
-import { Meteor } from 'meteor/meteor'
-import { isEqual, forOwn } from 'lodash';
-import CreatureProperties from '/imports/api/creature/CreatureProperties.js';
-// Schemas
-// Calculated props
-import { ComputedOnlySkillSchema } from '/imports/api/properties/Skills.js';
-import { ComputedOnlyAttributeSchema } from '/imports/api/properties/Attributes.js';
-import { ComputedOnlyEffectSchema } from '/imports/api/properties/Effects.js';
-import { ComputedOnlyToggleSchema } from '/imports/api/properties/Toggles.js';
-// End step props
-import { ComputedOnlyActionSchema } from '/imports/api/properties/Actions.js';
-import { ComputedOnlyAttackSchema } from '/imports/api/properties/Attacks.js';
-import { ComputedOnlySavingThrowSchema } from '/imports/api/properties/SavingThrows.js';
-import { ComputedOnlySpellListSchema } from '/imports/api/properties/SpellLists.js';
-import { ComputedOnlySpellSchema } from '/imports/api/properties/Spells.js';
-import { ComputedOnlySlotSchema } from '/imports/api/properties/Slots.js';
-
-const schemasByType = {
-  'skill': ComputedOnlySkillSchema,
-  'attribute': ComputedOnlyAttributeSchema,
-  'effect': ComputedOnlyEffectSchema,
-  'toggle': ComputedOnlyToggleSchema,
-  'action': ComputedOnlyActionSchema,
-  'attack': ComputedOnlyAttackSchema,
-  'savingThrow': ComputedOnlySavingThrowSchema,
-  'spellList': ComputedOnlySpellListSchema,
-  'spell': ComputedOnlySpellSchema,
-  'propertySlot': ComputedOnlySlotSchema,
-};
-
-export default function writeAlteredProperties(memo){
-  let bulkWriteOperations = [];
-  // Loop through all properties on the memo
-  forOwn(memo.propsById, changed => {
-    let schema = schemasByType[changed.type];
-    if (!schema) return;
-    let extraIds = changed.computationDetails.idsOfSameName;
-    let ids;
-    if (extraIds && extraIds.length){
-      ids = [changed._id, ...extraIds];
-    } else {
-      ids = [changed._id];
-    }
-    ids.forEach(id => {
-      let op = undefined;
-      let original = memo.originalPropsById[id];
-      op = addChangedKeysToOp(op, schema.objectKeys(), original, changed);
-      if (op){
-        bulkWriteOperations.push(op);
-      }
-    });
-  });
-  bulkWriteProperties(bulkWriteOperations);
-}
-
-function addChangedKeysToOp(op, keys, original, changed) {
-  // Loop through all keys that can be changed by computation
-  // and compile an operation that sets all those keys
-  for (let key of keys){
-    if (!isEqual(original[key], changed[key])){
-      if (!op) op = newOperation(original._id, changed.type);
-      let value = changed[key];
-      if (value === undefined){
-        // Unset values that become undefined
-        addUnsetOp(op, key);
-      } else {
-        // Set values that changed to something else
-        addSetOp(op, key, value);
-      }
-    }
-  }
-  return op;
-}
-
-function newOperation(_id, type){
-  let newOp = {
-    updateOne: {
-      filter: {_id},
-      update: {},
-    }
-  };
-  if (Meteor.isClient){
-    newOp.type = type;
-  }
-  return newOp;
-}
-
-function addSetOp(op, key, value){
-  if (op.updateOne.update.$set){
-    op.updateOne.update.$set[key] = value;
-  } else {
-    op.updateOne.update.$set = {[key]: value};
-  }
-}
-
-function addUnsetOp(op, key){
-  if (op.updateOne.update.$unset){
-    op.updateOne.update.$unset[key] = 1;
-  } else {
-    op.updateOne.update.$unset = {[key]: 1};
-  }
-}
-
-function bulkWriteProperties(bulkWriteOps){
-  if (!bulkWriteOps.length) return;
-  if (Meteor.isServer){
-    CreatureProperties.rawCollection().bulkWrite(
-      bulkWriteOps,
-      {ordered : false},
-      function(e){
-        if (e) {
-          console.error('Bulk write failed: ');
-          console.error(e);
-        }
-      }
-    );
-  } else {
-    bulkWriteOps.forEach(op => {
-      let updateOneOrMany = op.updateOne || op.updateMany;
-      CreatureProperties.update(updateOneOrMany.filter, updateOneOrMany.update, {
-        // The server code is bypassing collection 2 validation, so do the same
-        // on the client
-        // include this if bypass is off:
-        // selector: {type: op.type}
-        bypassCollection2: true,
-      });
-    });
-  }
-}

app/imports/api/creature/computation/writeCreatureVariables.js

@@ -1,39 +0,0 @@
-import { pick, forOwn } from 'lodash';
-import Creatures from '/imports/api/creature/Creatures.js';
-import VERSION from '/imports/constants/VERSION.js';
-
-export default function writeCreatureVariables(memo, creatureId) {
-  const fields = [
-    'name',
-    'attributeType',
-    'baseValue',
-    'damage',
-    'decimal',
-    'reset',
-    'resetMultiplier',
-    'value',
-    'currentValue',
-    'modifier',
-    'ability',
-    'skillType',
-    'baseProficiency',
-    'abilityMod',
-    'advantage',
-    'passiveBonus',
-    'proficiency',
-    'conditionalBenefits',
-    'rollBonuses',
-    'fail',
-    'level',
-  ];
-
-  memo.creatureVariables = {};
-  forOwn(memo.statsByVariableName, (stat, variableName) => {
-    let condensedStat = pick(stat, fields);
-    memo.creatureVariables[variableName] = condensedStat;
-  });
-  Creatures.update(creatureId, {$set: {
-    variables: memo.creatureVariables,
-    computeVersion: VERSION,
-  }});
-}

app/imports/api/creature/creatureFolders/CreatureFolders.js

@@ -0,0 +1,39 @@
+import SimpleSchema from 'simpl-schema';
+import STORAGE_LIMITS from '/imports/constants/STORAGE_LIMITS.js';
+
+let CreatureFolders = new Mongo.Collection('creatureFolders');
+
+let creatureFolderSchema = new SimpleSchema({
+	name: {
+		type: String,
+		trim: false,
+		optional: true,
+    max: STORAGE_LIMITS.name,
+	},
+	creatures: {
+		type: Array,
+		defaultValue: [],
+	},
+	'creatures.$': {
+		type: String,
+		regEx: SimpleSchema.RegEx.Id,
+	},
+	owner: {
+		type: String,
+		regEx: SimpleSchema.RegEx.Id,
+    index: 1,
+	},
+  archived: {
+    type: Boolean,
+    optional: true,
+  },
+  order: {
+    type: Number,
+    defaultValue: 0,
+  },
+});
+
+CreatureFolders.attachSchema(creatureFolderSchema);
+
+import '/imports/api/creature/creatureFolders/methods.js/index.js';
+export default CreatureFolders;

app/imports/api/creature/creatureFolders/methods.js/index.js

@@ -0,0 +1,4 @@
+import '/imports/api/creature/creatureFolders/methods.js/insertCreatureFolder.js';
+import '/imports/api/creature/creatureFolders/methods.js/updateCreatureFolderName.js';
+import '/imports/api/creature/creatureFolders/methods.js/removeCreatureFolder.js';
+import '/imports/api/creature/creatureFolders/methods.js/moveCreatureToFolder.js';

app/imports/api/creature/creatureFolders/methods.js/insertCreatureFolder.js

@@ -0,0 +1,46 @@
+import CreatureFolders from '/imports/api/creature/creatureFolders/CreatureFolders.js';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+
+const insertCreatureFolder = new ValidatedMethod({
+  name: 'creatureFolders.methods.insert',
+  validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run() {
+    // Ensure logged in
+    let userId = this.userId;
+    if (!userId) {
+      throw new Meteor.Error('creatureFolders.methods.insert.denied',
+      'You need to be logged in to insert a folder');
+    }
+    // Limit folders to 50 per user
+    let existingFolders = CreatureFolders.find({
+      owner: userId
+    }, {
+      fields: {order: 1},
+      sort: {order :-1}
+    });
+    if (existingFolders.count() >= 50){
+      throw new Meteor.Error('creatureFolders.methods.insert.denied',
+      'You can not have more than 50 folders');
+    }
+    // Make the new folder the last in the order
+    let order = 0;
+    let lastFolder = existingFolders.fetch()[0];
+    if (lastFolder){
+      order = (lastFolder.order || 0) + 1;
+    }
+    // Insert
+    return CreatureFolders.insert({
+      name: 'Folder',
+      owner: userId,
+      order,
+    });
+  },
+});
+
+export default insertCreatureFolder;

app/imports/api/creature/creatureFolders/methods.js/moveCreatureToFolder.js

@@ -0,0 +1,45 @@
+import CreatureFolders from '/imports/api/creature/creatureFolders/CreatureFolders.js';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+
+const moveCreatureToFolder = new ValidatedMethod({
+  name: 'creatureFolders.methods.moveCreatureToFolder',
+  validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({creatureId, folderId}) {
+    // Ensure logged in
+    let userId = this.userId;
+    if (!userId) {
+      throw new Meteor.Error('creatureFolders.methods.updateName.denied',
+      'You need to be logged in to remove a folder');
+    }
+    // Check that this folder is owned by the user
+    if (folderId){
+      let existingFolder = CreatureFolders.findOne(folderId);
+      if (existingFolder.owner !== userId){
+        throw new Meteor.Error('creatureFolders.methods.updateName.denied',
+        'This folder does not belong to you');
+      }
+    }
+    // Remove from other folders
+    CreatureFolders.update({
+      owner: userId
+    }, {
+      $pull: {creatures: creatureId},
+    }, {
+      multi: true,
+    });
+    if (folderId){
+      // Add to this folder
+      CreatureFolders.update(folderId, {
+        $addToSet: {creatures: creatureId},
+      });
+    }
+  },
+});
+
+export default moveCreatureToFolder;

app/imports/api/creature/creatureFolders/methods.js/removeCreatureFolder.js

@@ -0,0 +1,31 @@
+import CreatureFolders from '/imports/api/creature/creatureFolders/CreatureFolders.js';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+
+const removeCreatureFolder = new ValidatedMethod({
+  name: 'creatureFolders.methods.remove',
+  validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id}) {
+    // Ensure logged in
+    let userId = this.userId;
+    if (!userId) {
+      throw new Meteor.Error('creatureFolders.methods.updateName.denied',
+      'You need to be logged in to remove a folder');
+    }
+    // Check that this folder is owned by the user
+    let existingFolder = CreatureFolders.findOne(_id);
+    if (existingFolder.owner !== userId){
+      throw new Meteor.Error('creatureFolders.methods.updateName.denied',
+      'This folder does not belong to you');
+    }
+    // Remove
+    return CreatureFolders.remove(_id);
+  },
+});
+
+export default removeCreatureFolder;

app/imports/api/creature/creatureFolders/methods.js/reorderCreatureFolder.js

@@ -0,0 +1,43 @@
+import CreatureFolders from '/imports/api/creature/creatureFolders/CreatureFolders.js';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+
+const reorderCreatureFolder = new ValidatedMethod({
+  name: 'creatureFolders.methods.reorder',
+  validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id, order}) {
+    // Ensure logged in
+    let userId = this.userId;
+    if (!userId) {
+      throw new Meteor.Error('creatureFolders.methods.reorder.denied',
+      'You need to be logged in to reorder a folder');
+    }
+    // Check that this folder is owned by the user
+    let existingFolder = CreatureFolders.findOne(_id);
+    if (existingFolder.owner !== userId){
+      throw new Meteor.Error('creatureFolders.methods.reorder.denied',
+      'This folder does not belong to you');
+    }
+    // First give it the new order, it should end in 0.5 putting it between two other docs
+    CreatureFolders.update(_id, {$set: {order}});
+    this.unblock();
+    // Reorder all the folders with integer numbers in this new order
+    CreatureFolders.find({
+      owner: userId
+    }, {
+      fields: {order: 1,},
+      sort: {order: -1}
+    }).forEach((folder, index) => {
+      if (folder.order !== index){
+        CreatureFolders.update(_id, {$set: {order: index}})
+      }
+    });
+  },
+});
+
+export default reorderCreatureFolder;

app/imports/api/creature/creatureFolders/methods.js/updateCreatureFolderName.js

@@ -0,0 +1,31 @@
+import CreatureFolders from '/imports/api/creature/creatureFolders/CreatureFolders.js';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+
+const updateCreatureFolderName = new ValidatedMethod({
+  name: 'creatureFolders.methods.updateName',
+  validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id, name}) {
+    // Ensure logged in
+    let userId = this.userId;
+    if (!userId) {
+      throw new Meteor.Error('creatureFolders.methods.updateName.denied',
+      'You need to be logged in to update a folder');
+    }
+    // Check that this folder is owned by the user
+    let existingFolder = CreatureFolders.findOne(_id);
+    if (existingFolder.owner !== userId){
+      throw new Meteor.Error('creatureFolders.methods.updateName.denied',
+      'This folder does not belong to you');
+    }
+    // Update
+    return CreatureFolders.update(_id, {$set: {name}});
+  },
+});
+
+export default updateCreatureFolderName;

app/imports/api/creature/creatureProperties/CreatureProperties.js

@@ -0,0 +1,100 @@
+import { Mongo } from 'meteor/mongo';
+import SimpleSchema from 'simpl-schema';
+import ColorSchema from '/imports/api/properties/subSchemas/ColorSchema.js';
+import ChildSchema from '/imports/api/parenting/ChildSchema.js';
+import SoftRemovableSchema from '/imports/api/parenting/SoftRemovableSchema.js';
+import propertySchemasIndex from '/imports/api/properties/computedPropertySchemasIndex.js';
+import { storedIconsSchema } from '/imports/api/icons/Icons.js';
+import STORAGE_LIMITS from '/imports/constants/STORAGE_LIMITS.js';
+
+let CreatureProperties = new Mongo.Collection('creatureProperties');
+
+let CreaturePropertySchema = new SimpleSchema({
+	type: {
+    type: String,
+    allowedValues: Object.keys(propertySchemasIndex),
+  },
+	tags: {
+		type: Array,
+		defaultValue: [],
+    maxCount: STORAGE_LIMITS.tagCount,
+	},
+	'tags.$': {
+		type: String,
+    max: STORAGE_LIMITS.tagLength,
+	},
+	disabled: {
+		type: Boolean,
+		optional: true,
+	},
+  icon: {
+    type: storedIconsSchema,
+    optional: true,
+    max: STORAGE_LIMITS.icon,
+  },
+  // Reference to the library node that this property was copied from
+  libraryNodeId: {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+    optional: true,
+  },
+  // Denormalised flag if this property is inactive on the sheet for any reason
+  // Including being disabled, or a decendent of a disabled property
+  inactive: {
+    type: Boolean,
+    optional: true,
+    index: 1,
+  },
+  // Denormalised flag if this property was made inactive by an inactive
+  // ancestor. True if this property has an inactive ancestor even if this
+  // property is itself inactive
+  deactivatedByAncestor: {
+    type: Boolean,
+    optional: true,
+    index: 1,
+  },
+  // Denormalised flag if this property was made inactive because of its own
+  // state
+  deactivatedBySelf: {
+    type: Boolean,
+    optional: true,
+    index: 1,
+  },
+  // Denormalised flag if this property was made inactive because of a toggle
+  // calculation. Either an ancestor toggle calculation or its own.
+  deactivatedByToggle: {
+    type: Boolean,
+    optional: true,
+    index: 1,
+  },
+  // Denormalised list of all properties or creatures this property depends on
+  dependencies: {
+    type: Array,
+    defaultValue: [],
+    index: 1,
+  },
+  'dependencies.$': {
+    type: String,
+  },
+});
+
+for (let key in propertySchemasIndex){
+	let schema = new SimpleSchema({});
+	schema.extend(propertySchemasIndex[key]);
+	schema.extend(CreaturePropertySchema);
+  schema.extend(ColorSchema);
+	schema.extend(ChildSchema);
+	schema.extend(SoftRemovableSchema);
+	CreatureProperties.attachSchema(schema, {
+		selector: {type: key}
+	});
+}
+
+import '/imports/api/creature/creatureProperties/methods/index.js';
+import '/imports/api/creature/actions/doAction.js';
+import '/imports/api/creature/actions/castSpellWithSlot.js';
+
+export default CreatureProperties;
+export {
+	CreaturePropertySchema,
+};

app/imports/api/creature/creatureProperties/assertPropertyEditPermission.js

@@ -1,7 +0,0 @@
-import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
-import getClosestPropertyAncestorCreature from '/imports/api/creature/creatureProperties/getClosestPropertyAncestorCreature.js';
-
-export default function assertPropertyEditPermission(prop, userId){
-  let creature = getClosestPropertyAncestorCreature(prop);
-  assertEditPermission(creature, userId);
-}

app/imports/api/creature/creatureProperties/getClosestPropertyAncestorCreature.js

@@ -1,7 +0,0 @@
-import Creatures from '/imports/api/creature/Creatures.js';
-import getClosestPropertyAncestorCreatureId from '/imports/api/creature/creatureProperties/getClosestPropertyAncestorCreatureId.js';
-
-export default function getClosestPropertyAncestorCreature(prop){
-  let creatureId = getClosestPropertyAncestorCreatureId(prop);
-  return Creatures.findOne(creatureId);
-}

app/imports/api/creature/creatureProperties/getClosestPropertyAncestorCreatureId.js

@@ -1,13 +0,0 @@
-export default function getClosestPropertyAncestorCreatureId(prop){
-  if (!prop.ancestors) throw 'Property has no ancestors';
-  let creatureId;
-  // Find the last ancestor in the creature collection
-  for (let i = prop.ancestors.length - 1; i >= 0; i--){
-    if (prop.ancestors[i].collection === 'creatures'){
-      creatureId = prop.ancestors[i].id;
-      break;
-    }
-  }
-  if (!creatureId) throw 'This property has no creature ancestors';
-  return creatureId;
-}

app/imports/api/creature/creatureProperties/getRootCreatureAncestor.js

@@ -0,0 +1,5 @@
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+
+export default function getRootCreatureAncestor(property){
+  return Creatures.findOne(property.ancestors[0].id);
+}

app/imports/api/creature/creatureProperties/methods/adjustQuantity.js

@@ -0,0 +1,69 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import SimpleSchema from 'simpl-schema';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import recomputeInventory from '/imports/api/creature/denormalise/recomputeInventory.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+
+const adjustQuantity = new ValidatedMethod({
+  name: 'creatureProperties.adjustQuantity',
+  validate: new SimpleSchema({
+    _id: SimpleSchema.RegEx.Id,
+    operation: {
+      type: String,
+      allowedValues: ['set', 'increment']
+    },
+    value: Number,
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id, operation, value}) {
+    // Permissions
+		let property = CreatureProperties.findOne(_id);
+    let rootCreature = getRootCreatureAncestor(property);
+		assertEditPermission(rootCreature, this.userId);
+
+    // Do work
+    adjustQuantityWork({property, operation, value});
+
+    // Changing quantity does not change dependencies, but recomputing the
+    // inventory changes many deps at once, so recompute fully
+    recomputeCreatureByDoc(rootCreature);
+    recomputeInventory(rootCreature._id);
+  },
+});
+
+export function adjustQuantityWork({property, operation, value}){
+  // Check if property has quantity
+  let schema = CreatureProperties.simpleSchema(property);
+  if (!schema.allowsKey('quantity')){
+    throw new Meteor.Error(
+      'Adjust quantity failed',
+      `Property of type "${property.type}" doesn't have a quantity`
+    );
+  }
+  if (operation === 'set'){
+    CreatureProperties.update(property._id, {
+      $set: {quantity: value}
+    }, {
+      selector: property
+    });
+  } else if (operation === 'increment'){
+    // value here is 'damage'
+    value = -value;
+    let currentQuantity = property.quantity;
+    if (currentQuantity + value < 0) value = -currentQuantity;
+    CreatureProperties.update(property._id, {
+      $inc: {quantity: value}
+    }, {
+      selector: property
+    });
+  }
+}
+
+export default adjustQuantity;

app/imports/api/creature/creatureProperties/methods/damagePropertiesByName.js

@@ -0,0 +1,57 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import SimpleSchema from 'simpl-schema';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import { damagePropertyWork } from '/imports/api/creature/creatureProperties/methods/damageProperty.js';
+import { recomputePropertyDependencies } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+
+const damagePropertiesByName = new ValidatedMethod({
+  name: 'CreatureProperties.damagePropertiesByName',
+  validate: new SimpleSchema({
+    creatureId: SimpleSchema.RegEx.Id,
+    variableName: {
+      type: String,
+    },
+    operation: {
+      type: String,
+      allowedValues: ['set', 'increment']
+    },
+    value: Number,
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 20,
+    timeInterval: 5000,
+  },
+  run({creatureId, variableName, operation, value}) {
+		// Check permissions
+    let creature = Creatures.findOne(creatureId, {
+      fields: {
+        damageMultipliers: 1,
+        owner: 1,
+        readers: 1,
+        writers: 1,
+      },
+    });
+    assertEditPermission(creature, this.userId);
+    let lastProperty;
+    CreatureProperties.find({
+      'ancestors.id': creatureId,
+      variableName,
+      removed: {$ne: false},
+      inactive: {$ne: true},
+    }).forEach(property => {
+      // Check if property can take damage
+      let schema = CreatureProperties.simpleSchema(property);
+      if (!schema.allowsKey('damage')) return;
+      // Damage the property
+      damagePropertyWork({property, operation, value});
+      lastProperty = property;
+    });
+    if (lastProperty) recomputePropertyDependencies(lastProperty);
+  }
+});
+
+export default damagePropertiesByName;

app/imports/api/creature/creatureProperties/methods/damageProperty.js

@@ -0,0 +1,80 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import SimpleSchema from 'simpl-schema';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import { recomputePropertyDependencies } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+
+const damageProperty = new ValidatedMethod({
+  name: 'creatureProperties.damage',
+  validate: new SimpleSchema({
+    _id: SimpleSchema.RegEx.Id,
+    operation: {
+      type: String,
+      allowedValues: ['set', 'increment']
+    },
+    value: Number,
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 20,
+    timeInterval: 5000,
+  },
+  run({_id, operation, value}) {
+    // Check permissions
+		let property = CreatureProperties.findOne(_id);
+    if (!property) throw new Meteor.Error(
+      'Damage property failed', 'Property doesn\'t exist'
+    );
+    let rootCreature = getRootCreatureAncestor(property);
+    assertEditPermission(rootCreature, this.userId);
+		// Check if property can take damage
+		let schema = CreatureProperties.simpleSchema(property);
+		if (!schema.allowsKey('damage')){
+			throw new Meteor.Error(
+				'Damage property failed',
+				`Property of type "${property.type}" can't be damaged`
+			);
+		}
+		let result = damagePropertyWork({property, operation, value});
+    // Dependencies can't be changed through damage, only recompute deps
+    recomputePropertyDependencies(property);
+    return result;
+  },
+});
+
+export function damagePropertyWork({property, operation, value}){
+  if (operation === 'set'){
+    let currentValue = property.value;
+    // Set represents what we want the value to be after damage
+    // So we need the actual damage to get to that value
+    let damage = currentValue - value;
+    // Damage can't exceed total value
+    if (damage > currentValue) damage = currentValue;
+    // Damage must be positive
+    if (damage < 0) damage = 0;
+    CreatureProperties.update(property._id, {
+      $set: {damage}
+    }, {
+      selector: property
+    });
+    return currentValue - damage;
+  } else if (operation === 'increment'){
+    let currentValue = property.value - (property.damage || 0);
+    let currentDamage = property.damage;
+    let increment = value;
+    // Can't increase damage above the remaining value
+    if (increment > currentValue) increment = currentValue;
+    // Can't decrease damage below zero
+    if (-increment > currentDamage) increment = -currentDamage;
+    CreatureProperties.update(property._id, {
+      $inc: {damage: increment}
+    }, {
+      selector: property
+    });
+    return increment;
+  }
+}
+
+export default damageProperty;

app/imports/api/creature/creatureProperties/methods/dealDamage.js

@@ -0,0 +1,73 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import SimpleSchema from 'simpl-schema';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import { damagePropertyWork } from '/imports/api/creature/creatureProperties/methods/damageProperty.js';
+import { recomputeCreatureByDependencies } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+
+const dealDamage = new ValidatedMethod({
+  name: 'creatureProperties.dealDamage',
+  validate: new SimpleSchema({
+    creatureId: SimpleSchema.RegEx.Id,
+    damageType: {
+      type: String,
+    },
+    amount: Number,
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 20,
+    timeInterval: 5000,
+  },
+  run({creatureId, damageType, amount}) {
+    // permissions
+    let creature = Creatures.findOne(creatureId, {
+      fields: {
+        damageMultipliers: 1,
+        owner: 1,
+        readers: 1,
+        writers: 1,
+      },
+    });
+    assertEditPermission(creature, this.userId);
+
+    // Get all the health bars and do damage to them
+    let healthBars = CreatureProperties.find({
+      'ancestors.id': creatureId,
+      type: 'attribute',
+      attributeType:'healthBar',
+      removed: {$ne: true},
+      inactive: {$ne: true},
+    }, {
+      sort: {order: -1},
+    });
+    let multiplier = creature.damageMultipliers[damageType];
+    if (multiplier === undefined) multiplier = 1;
+    let totalDamage = Math.floor(amount * multiplier);
+    let damageLeft = totalDamage;
+    if (damageType === 'healing') damageLeft = -totalDamage;
+    let propertyIds = [];
+    let propertiesDependedAponIds = [];
+    healthBars.forEach(healthBar => {
+      if (damageLeft === 0) return;
+      let damageAdded = damagePropertyWork({
+        property: healthBar,
+        operation: 'increment',
+        value: damageLeft,
+      });
+      damageLeft -= damageAdded;
+      propertyIds.push(healthBar._id);
+      propertiesDependedAponIds.push(...healthBar.dependencies);
+    });
+    recomputeCreatureByDependencies({
+      creature,
+      propertyIds,
+      propertiesDependedAponIds,
+    });
+    return totalDamage;
+  },
+});
+
+export default dealDamage;

app/imports/api/creature/creatureProperties/methods/duplicateProperty.js

@@ -0,0 +1,105 @@
+import SimpleSchema from 'simpl-schema';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import {
+	setLineageOfDocs,
+	renewDocIds
+} from '/imports/api/parenting/parenting.js';
+import recomputeInactiveProperties from '/imports/api/creature/denormalise/recomputeInactiveProperties.js';
+import { reorderDocs } from '/imports/api/parenting/order.js';
+import recomputeInventory from '/imports/api/creature/denormalise/recomputeInventory.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+var snackbar;
+if (Meteor.isClient){
+  snackbar = require(
+    '/imports/ui/components/snackbars/SnackbarQueue.js'
+  ).snackbar
+}
+
+const DUPLICATE_CHILDREN_LIMIT = 50;
+
+const duplicateProperty = new ValidatedMethod({
+  name: 'creatureProperties.duplicate',
+  validate: new SimpleSchema({
+    _id: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    }
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id}) {
+    let property = CreatureProperties.findOne(_id);
+    let creature = getRootCreatureAncestor(property);
+
+    assertEditPermission(creature, this.userId);
+
+    // Renew the doc ID
+    let randomSrc = DDP.randomStream('duplicateProperty');
+    let propertyId = randomSrc.id();
+    property._id = propertyId;
+
+    // Get all the descendants
+    let nodes = CreatureProperties.find({
+			'ancestors.id': _id,
+			removed: {$ne: true},
+		}, {
+      limit: DUPLICATE_CHILDREN_LIMIT + 1,
+      sort: {order: 1},
+    }).fetch();
+
+    // Alert the user if the limit was hit
+    if (nodes.length > DUPLICATE_CHILDREN_LIMIT){
+      nodes.pop();
+      if (Meteor.isClient){
+        snackbar({
+          text: `Only the first ${DUPLICATE_CHILDREN_LIMIT} children were duplicated`,
+        });
+      }
+    }
+
+    // re-map all the ancestors
+    setLineageOfDocs({
+			docArray: nodes,
+			newAncestry : [
+        ...property.ancestors,
+        {id: propertyId, collection: 'creatureProperties'}
+      ],
+			oldParent : {id: _id, collection: 'creatureProperties'},
+		});
+
+    // Give the docs new IDs without breaking internal references
+    renewDocIds({docArray: nodes});
+
+    // Order the root node
+    property.order += 0.5;
+
+    // Insert the properties
+		CreatureProperties.batchInsert([property, ...nodes]);
+
+    // Tree structure changed by inserts, reorder the tree
+    reorderDocs({
+      collection: CreatureProperties,
+      ancestorId: property.ancestors[0].id,
+    });
+
+    // Inserting the active status of the property needs to be denormalised
+    recomputeInactiveProperties(creature._id);
+
+    // Recompute the inventory
+    recomputeInventory(creature._id);
+
+    // Inserting a creature property invalidates dependencies: full recompute
+    recomputeCreatureByDoc(creature);
+
+    return propertyId;
+  },
+});
+
+export default duplicateProperty;

app/imports/api/creature/creatureProperties/methods/equipItem.js

@@ -1,26 +1,14 @@
 import { ValidatedMethod } from 'meteor/mdg:validated-method';
-import CreatureProperties from '/imports/api/creature/CreatureProperties.js';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
 import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
 import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
 import { organizeDoc } from '/imports/api/parenting/organizeMethods.js';
-import getClosestPropertyAncestorCreature from '/imports/api/creature/creatureProperties/getClosestPropertyAncestorCreature.js';
-import INVENTORY_TAGS from '/imports/constants/INVENTORY_TAGS.js';
-
-function getParentRefByTag(creatureId, tag){
-  let prop = CreatureProperties.findOne({
-    'ancestors.id': creatureId,
-    removed: {$ne: true},
-    inactive: {$ne: true},
-    tags: tag,
-  }, {
-    sort: {order: 1},
-  });
-  if (prop){
-    return {id: prop._id, collection: 'creatureProperties'};
-  } else {
-    return {id: creatureId, collection: 'creatures'};
-  }
-}
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+import recomputeInactiveProperties from '/imports/api/creature/denormalise/recomputeInactiveProperties.js';
+import recomputeInventory from '/imports/api/creature/denormalise/recomputeInventory.js';
+import BUILT_IN_TAGS from '/imports/constants/BUILT_IN_TAGS.js';
+import getParentRefByTag from '/imports/api/creature/creatureProperties/methods/getParentRefByTag.js';
 
 // Equipping or unequipping an item will also change its parent
 const equipItem = new ValidatedMethod({
@@ -40,16 +28,17 @@ const equipItem = new ValidatedMethod({
     let item = CreatureProperties.findOne(_id);
     if (item.type !== 'item') throw new Meteor.Error('wrong type',
     'Equip and unequip can only be performed on items');
-    let creature = getClosestPropertyAncestorCreature(item);
+    let creature = getRootCreatureAncestor(item);
     assertEditPermission(creature, this.userId);
     CreatureProperties.update(_id, {
       $set: {equipped},
     }, {
 			selector: {type: 'item'},
 		});
-    let tag = equipped ? INVENTORY_TAGS.equipment : INVENTORY_TAGS.carried;
+    let tag = equipped ? BUILT_IN_TAGS.equipment : BUILT_IN_TAGS.carried;
     let parentRef = getParentRefByTag(creature._id, tag);
-    // organizeDoc handles recompuation
+    if (!parentRef) parentRef = {id: creature._id, collection: 'creatures'};
+
     organizeDoc.call({
       docRef: {
         id: _id,
@@ -57,8 +46,13 @@ const equipItem = new ValidatedMethod({
       },
       parentRef,
       order: Number.MAX_SAFE_INTEGER,
+      skipRecompute: true,
     });
+
+    recomputeInactiveProperties(creature._id);
+    recomputeInventory(creature._id);
+    recomputeCreatureByDoc(creature);
   },
 });
 
-export { equipItem, getParentRefByTag }
+export default equipItem;

app/imports/api/creature/creatureProperties/methods/getParentRefByTag.js

@@ -0,0 +1,13 @@
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+
+export default function getParentRefByTag(creatureId, tag){
+  let prop = CreatureProperties.findOne({
+    'ancestors.id': creatureId,
+    removed: {$ne: true},
+    inactive: {$ne: true},
+    tags: tag,
+  }, {
+    sort: {order: 1},
+  });
+  return prop && {id: prop._id, collection: 'creatureProperties'};
+}

app/imports/api/creature/creatureProperties/methods/getSlotFillFilter.js

@@ -0,0 +1,44 @@
+export default function getSlotFillFilter({slot, libraryIds}){
+  let filter = {
+    removed: {$ne: true},
+    $and: []
+  };
+  if (libraryIds){
+    filter['ancestors.id'] = {$in: libraryIds};
+  }
+  if (slot.slotType){
+    filter.$and.push({
+      $or: [{
+        type: slot.slotType
+      },{
+        type: 'slotFiller',
+        slotFillerType: slot.slotType,
+      }]
+    });
+  }
+  let tagsOr = [];
+  let tagsNor = [];
+  if (slot.slotTags && slot.slotTags.length){
+    tagsOr.push({tags: {$all: slot.slotTags}});
+  }
+  if (slot.extraTags && slot.extraTags.length){
+    slot.extraTags.forEach(extra => {
+      if (!extra.tags || !extra.tags.length) return;
+      if (extra.operation === 'OR'){
+        tagsOr.push({tags: {$all: extra.tags}});
+      } else if (extra.operation === 'NOT'){
+        tagsNor.push({tags: {$all: extra.tags}});
+      }
+    });
+  }
+  if (tagsOr.length){
+    filter.$and.push({$or: tagsOr});
+  }
+  if (tagsNor.length){
+    filter.$and.push({$nor: tagsNor});
+  }
+  if (!filter.$and.length){
+    delete filter.$and;
+  }
+  return filter;
+}

app/imports/api/creature/creatureProperties/methods/index.js

@@ -0,0 +1,14 @@
+import '/imports/api/creature/creatureProperties/methods/adjustQuantity.js';
+import '/imports/api/creature/creatureProperties/methods/damagePropertiesByName.js';
+import '/imports/api/creature/creatureProperties/methods/damageProperty.js';
+import '/imports/api/creature/creatureProperties/methods/dealDamage.js';
+import '/imports/api/creature/creatureProperties/methods/duplicateProperty.js';
+import '/imports/api/creature/creatureProperties/methods/equipItem.js';
+import '/imports/api/creature/creatureProperties/methods/insertProperty.js';
+import '/imports/api/creature/creatureProperties/methods/insertPropertyFromLibraryNode.js';
+import '/imports/api/creature/creatureProperties/methods/pullFromProperty.js';
+import '/imports/api/creature/creatureProperties/methods/pushToProperty.js';
+import '/imports/api/creature/creatureProperties/methods/restoreProperty.js';
+import '/imports/api/creature/creatureProperties/methods/selectAmmoItem.js';
+import '/imports/api/creature/creatureProperties/methods/softRemoveProperty.js';
+import '/imports/api/creature/creatureProperties/methods/updateCreatureProperty.js';

app/imports/api/creature/creatureProperties/methods/insertProperty.js

@@ -0,0 +1,156 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import SimpleSchema from 'simpl-schema';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import { reorderDocs } from '/imports/api/parenting/order.js';
+import recomputeInactiveProperties from '/imports/api/creature/denormalise/recomputeInactiveProperties.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+import recomputeInventory from '/imports/api/creature/denormalise/recomputeInventory.js';
+import { getAncestry } from '/imports/api/parenting/parenting.js';
+import getParentRefByTag from '/imports/api/creature/creatureProperties/methods/getParentRefByTag.js';
+import { RefSchema } from '/imports/api/parenting/ChildSchema.js';
+import { getHighestOrder } from '/imports/api/parenting/order.js';
+
+const insertProperty = new ValidatedMethod({
+  name: 'creatureProperties.insert',
+	validate: new SimpleSchema({
+    creatureProperty: {
+      type: Object,
+      blackbox: true,
+    },
+    parentRef: RefSchema,
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({creatureProperty, parentRef}) {
+    // get the new ancestry for the properties
+		let {parentDoc, ancestors} = getAncestry({parentRef});
+
+		// Check permission to edit
+    let rootCreature;
+		if (parentRef.collection === 'creatures'){
+      rootCreature = parentDoc;
+		} else if (parentRef.collection === 'creatureProperties'){
+      rootCreature = getRootCreatureAncestor(parentDoc);
+		} else {
+			throw `${parentRef.collection} is not a valid parent collection`
+		}
+    assertEditPermission(rootCreature, this.userId);
+
+    creatureProperty.parent = parentRef;
+    creatureProperty.ancestors = ancestors;
+
+		return insertPropertyWork({
+      property: creatureProperty,
+      creature: rootCreature,
+    });
+  },
+});
+
+const insertPropertyAsChildOfTag = new ValidatedMethod({
+  name: 'creatureProperties.insertAsChildOfTag',
+  validate: new SimpleSchema({
+    creatureProperty: {
+      type: Object,
+      blackbox: true,
+    },
+    creatureId: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    },
+    tag: {
+      type: String,
+      max: 20,
+    },
+    tagDefaultName: {
+      type: String,
+      max: 20,
+      optional: true,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({creatureProperty, creatureId, tag, tagDefaultName}) {
+    let parentRef = getParentRefByTag(creatureId, tag);
+
+    if (!parentRef){
+      // Use the creature as the parent and mark that we need to insert the folder first later
+      var insertFolderFirst = true;
+      parentRef = {id: creatureId, collection: 'creatures'};
+    }
+
+    // get the new ancestry for the properties
+		let {parentDoc, ancestors} = getAncestry({parentRef});
+
+    // Check permission to edit
+    let rootCreature;
+		if (parentRef.collection === 'creatures'){
+      rootCreature = parentDoc;
+		} else if (parentRef.collection === 'creatureProperties'){
+      rootCreature = getRootCreatureAncestor(parentDoc);
+		} else {
+			throw `${parentRef.collection} is not a valid parent collection`
+		}
+    assertEditPermission(rootCreature, this.userId);
+
+    // Add the folder first if we need to
+    if (insertFolderFirst){
+      let order = getHighestOrder({
+        collection: CreatureProperties,
+        ancestorId: parentRef.id,
+      }) + 1;
+      let id = CreatureProperties.insert({
+        type: 'folder',
+        name: tagDefaultName || (tag.charAt(0).toUpperCase() + tag.slice(1)),
+        tags: [tag],
+        parent: parentRef,
+        ancestors: [parentRef],
+        order,
+      });
+      // Make the folder our new parent
+      let newParentRef = {id, collection: 'creatureProperties'};
+      ancestors = [parentRef, newParentRef];
+      parentRef = newParentRef;
+      creatureProperty.order = order + 1;
+    }
+
+    creatureProperty.parent = parentRef;
+    creatureProperty.ancestors = ancestors;
+
+		return insertPropertyWork({
+      property: creatureProperty,
+      creature: rootCreature,
+    });
+  },
+});
+
+export function insertPropertyWork({property, creature}){
+  delete property._id;
+  let _id = CreatureProperties.insert(property);
+  // Tree structure changed by insert, reorder the tree
+  reorderDocs({
+    collection: CreatureProperties,
+    ancestorId: creature._id,
+  });
+  // Inserting the active status of the property needs to be denormalised
+  recomputeInactiveProperties(creature._id);
+
+  // Recompute the inventory if it has changed
+  if (property.type === 'item' || property.type === 'container'){
+    recomputeInventory(creature._id);
+  }
+  // Inserting a creature property invalidates dependencies: full recompute
+  recomputeCreatureByDoc(creature);
+  return _id;
+}
+
+export default insertProperty;
+export { insertPropertyAsChildOfTag };

app/imports/api/creature/creatureProperties/methods/insertPropertyFromLibraryNode.js

@@ -0,0 +1,242 @@
+import SimpleSchema from 'simpl-schema';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import LibraryNodes from '/imports/api/library/LibraryNodes.js';
+import { RefSchema } from '/imports/api/parenting/ChildSchema.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import recomputeInactiveProperties from '/imports/api/creature/denormalise/recomputeInactiveProperties.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import {
+	setLineageOfDocs,
+	getAncestry,
+	renewDocIds
+} from '/imports/api/parenting/parenting.js';
+import { reorderDocs } from '/imports/api/parenting/order.js';
+import { setDocToLastOrder } from '/imports/api/parenting/order.js';
+import recomputeInventory from '/imports/api/creature/denormalise/recomputeInventory.js';
+import fetchDocByRef from '/imports/api/parenting/fetchDocByRef.js';
+
+const insertPropertyFromLibraryNode = new ValidatedMethod({
+	name: 'creatureProperties.insertPropertyFromLibraryNode',
+	validate: new SimpleSchema({
+    nodeIds: {
+      type: Array,
+      max: 20,
+    },
+		'nodeIds.$': {
+			type: String,
+			regEx: SimpleSchema.RegEx.Id,
+		},
+		parentRef: {
+			type: RefSchema,
+		},
+    order: {
+      type: Number,
+      optional: true,
+    },
+	}).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+	run({nodeIds, parentRef, order}) {
+		// get the new ancestry for the properties
+		let {parentDoc, ancestors} = getAncestry({parentRef});
+
+		// Check permission to edit
+    let rootCreature;
+		if (parentRef.collection === 'creatures'){
+      rootCreature = parentDoc;
+		} else if (parentRef.collection === 'creatureProperties'){
+      rootCreature = getRootCreatureAncestor(parentDoc);
+		} else {
+			throw `${parentRef.collection} is not a valid parent collection`
+		}
+    assertEditPermission(rootCreature, this.userId);
+
+    // {libraryId: hasViewPermission}
+    //let libraryPermissionMemoir = {};
+    let node;
+		nodeIds.forEach(nodeId => {
+      // TODO: Check library view permission for each node before starting
+      node = insertPropertyFromNode(nodeId, ancestors, order);
+    });
+
+    // get one of the root inserted docs
+    let rootId = node._id;
+
+    // Tree structure changed by inserts, reorder the tree
+    reorderDocs({
+      collection: CreatureProperties,
+      ancestorId: rootCreature._id,
+    });
+
+    // The library properties need to denormalise which of them are inactive
+    recomputeInactiveProperties(rootCreature._id);
+    // Some of the library properties may be items or containers
+    recomputeInventory(rootCreature._id);
+		// Inserting a creature property invalidates dependencies: full recompute
+    recomputeCreatureByDoc(rootCreature);
+		// Return the docId of the last property, the inserted root property
+		return rootId;
+	},
+});
+
+function insertPropertyFromNode(nodeId, ancestors, order){
+  // Fetch the library node and its decendents, provided they have not been
+  // removed
+  // TODO: Check permission to read the library this node is in
+  let node = LibraryNodes.findOne({
+    _id: nodeId,
+    removed: {$ne: true},
+  });
+  if (!node) throw `Node not found for nodeId: ${nodeId}`;
+  let oldParent = node.parent;
+  let nodes = LibraryNodes.find({
+    'ancestors.id': nodeId,
+    removed: {$ne: true},
+  }).fetch();
+
+  // Convert all references into actual nodes
+  nodes = reifyNodeReferences(nodes);
+
+  // The root node is first in the array of nodes
+  // It must get the first generated ID to prevent flickering
+  nodes = [node, ...nodes];
+
+  // set libraryNodeIds
+  storeLibraryNodeReferences(nodes, nodeId);
+
+  // re-map all the ancestors
+  setLineageOfDocs({
+    docArray: nodes,
+    newAncestry: ancestors,
+    oldParent,
+  });
+
+  // Give the docs new IDs without breaking internal references
+  renewDocIds({
+    docArray: nodes,
+    collectionMap: {'libraryNodes': 'creatureProperties'}
+  });
+
+  // Order the root node
+  if (order === undefined){
+    setDocToLastOrder({
+      collection: CreatureProperties,
+      doc: node,
+    });
+  } else {
+    node.order = order;
+  }
+
+  // Insert the creature properties
+  CreatureProperties.batchInsert(nodes);
+  return node;
+}
+
+
+function storeLibraryNodeReferences(nodes){
+  nodes.forEach(node => {
+    node.libraryNodeId = node._id;
+  });
+}
+
+// Covert node references into actual nodes
+// TODO: check permissions for each library a reference node references
+function reifyNodeReferences(nodes, visitedRefs = new Set(), depth = 0){
+  depth += 1;
+  // New nodes added this function
+  let newNodes = [];
+
+  // Filter out the reference nodes we replace
+  let resultingNodes = nodes.filter(node => {
+
+    // We have already visited this ref and replaced it
+    if (visitedRefs.has(node._id)) return false;
+
+    // Already replaced an ancestor node
+    for (let i; i < node.ancestors.length; i++){
+      if (visitedRefs.has(node.ancestors[i].id)) return false;
+    }
+
+    // This isn't a reference node, continue as normal
+    if (node.type !== 'reference') return true;
+
+    // We have gone too deep, keep the reference node as an error
+    if (depth > 10){
+      if (Meteor.isClient) console.warn('Reference depth limit exceeded');
+      node.cache = {error: 'Reference depth limit exceeded'};
+      return true;
+    }
+
+    let referencedNode
+    try {
+      referencedNode = fetchDocByRef(node.ref);
+      referencedNode.order = node.order;
+      // We are definitely replacing this node, so add it to the list
+      visitedRefs.add(node._id);
+    } catch (e){
+      node.cache = {error: e.reason || e.message || e.toString()};
+      return true;
+    }
+
+    // Get all the descendants of the referenced node
+    let descendents = LibraryNodes.find({
+      'ancestors.id': referencedNode._id,
+      removed: {$ne: true},
+    }, {
+      sort: {order: 1},
+    }).fetch();
+
+    // We are adding the referenced node and its descendants
+    let addedNodes = [referencedNode, ...descendents];
+
+    // re-map all the ancestors to parent the new sub-tree into our existing
+    // node tree
+		setLineageOfDocs({
+			docArray: addedNodes,
+			newAncestry: node.ancestors,
+			oldParent: referencedNode.parent,
+		});
+
+    // Remove all the looped references and descendents from the new nodes
+    // We can't rely on the reify recursion to do this, since the IDs are
+    // getting renewed before it is called
+    addedNodes = addedNodes.filter(node => {
+      // Exclude removed referenced
+      if (visitedRefs.has(node._id)) return false;
+
+      // Exclude descendants of removed references
+      for (let i; i < node.ancestors.length; i++){
+        if (visitedRefs.has(node.ancestors[i].id)) return false;
+      }
+      return true;
+    });
+
+    // TODO: Force the referencedNode to take the old id of the reference
+    // such that the reference's children can be kept
+
+    // Give the new referenced sub-tree new ids
+    renewDocIds({
+      docArray: addedNodes,
+    });
+
+    // Reify the subtree as well with recursion
+    addedNodes = reifyNodeReferences(addedNodes, visitedRefs, depth);
+
+    // Store the new nodes from this inner loop without altering the array
+    // we are looping over
+    newNodes.push(...addedNodes);
+  });
+
+  // We are done filtering the array, we can add the new nodes to it
+  resultingNodes.push(...newNodes);
+
+  return resultingNodes;
+}
+
+export default insertPropertyFromLibraryNode;

app/imports/api/creature/creatureProperties/methods/pullFromProperty.js

@@ -0,0 +1,36 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+
+const pullFromProperty = new ValidatedMethod({
+	name: 'creatureProperties.pull',
+	validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+	run({_id, path, itemId}){
+    // Permissions
+		let property = CreatureProperties.findOne(_id);
+    let rootCreature = getRootCreatureAncestor(property);
+    assertEditPermission(rootCreature, this.userId);
+
+    // Do work
+		CreatureProperties.update(_id, {
+			$pull: {[path.join('.')]: {_id: itemId}},
+		}, {
+			selector: {type: property.type},
+			getAutoValues: false,
+		});
+
+    // TODO figure out if this method can change deps or not
+    recomputeCreatureByDoc(rootCreature);
+    // recomputePropertyDependencies(property);
+	}
+});
+
+export default pullFromProperty;

app/imports/api/creature/creatureProperties/methods/pushToProperty.js

@@ -0,0 +1,53 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+import { get } from 'lodash';
+
+const pushToProperty = new ValidatedMethod({
+	name: 'creatureProperties.push',
+	validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+	run({_id, path, value}){
+    // Permissions
+		let property = CreatureProperties.findOne(_id);
+    let rootCreature = getRootCreatureAncestor(property);
+    assertEditPermission(rootCreature, this.userId);
+
+    let joinedPath = path.join('.');
+
+    // Respect maxCount
+    let schema = CreatureProperties.simpleSchema(property);
+    let maxCount = schema.get(joinedPath, 'maxCount');
+
+    if (Number.isFinite(maxCount)){
+      let array = get(property, path);
+      let currentCount = array ? array.length : 0;
+      if (currentCount >= maxCount){
+        throw new Meteor.Error(
+          'Array is full',
+          `Cannot have more than ${maxCount} values`
+        );
+      }
+    }
+
+    // Do work
+		CreatureProperties.update(_id, {
+			$push: {[joinedPath]: value},
+		}, {
+			selector: {type: property.type},
+		});
+
+    // TODO figure out if this method can change deps or not
+    recomputeCreatureByDoc(rootCreature);
+    // recomputePropertyDependencies(property);
+	}
+});
+
+export default pushToProperty;

app/imports/api/creature/creatureProperties/methods/restoreProperty.js

@@ -0,0 +1,40 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import SimpleSchema from 'simpl-schema';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import { restore } from '/imports/api/parenting/softRemove.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import recomputeInactiveProperties from '/imports/api/creature/denormalise/recomputeInactiveProperties.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+import recomputeInventory from '/imports/api/creature/denormalise/recomputeInventory.js';
+
+const restoreProperty = new ValidatedMethod({
+	name: 'creatureProperties.restore',
+	validate: new SimpleSchema({
+		_id: SimpleSchema.RegEx.Id
+	}).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+	run({_id}){
+    // Permissions
+		let property = CreatureProperties.findOne(_id);
+    let rootCreature = getRootCreatureAncestor(property);
+    assertEditPermission(rootCreature, this.userId);
+
+    // Do work
+    restore({_id, collection: CreatureProperties});
+
+    // Items and containers might be restored
+    recomputeInventory(rootCreature._id);
+    // Parents active status may have changed while it was deleted
+    recomputeInactiveProperties(rootCreature._id);
+    // Changes dependency tree by restoring children
+    recomputeCreatureByDoc(rootCreature);
+	}
+});
+
+export default restoreProperty;

app/imports/api/creature/creatureProperties/methods/selectAmmoItem.js

@@ -0,0 +1,52 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import SimpleSchema from 'simpl-schema';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+
+const selectAmmoItem = new ValidatedMethod({
+  name: 'creatureProperties.selectAmmoItem',
+  validate: new SimpleSchema({
+    actionId: SimpleSchema.RegEx.Id,
+    itemId: SimpleSchema.RegEx.Id,
+    itemConsumedIndex: Number,
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({actionId, itemId, itemConsumedIndex}) {
+    // Permissions
+		let action = CreatureProperties.findOne(actionId);
+    let rootCreature = getRootCreatureAncestor(action);
+		assertEditPermission(rootCreature, this.userId);
+
+    // Check that this index has a document to edit
+    let itemConsumed = action.resources.itemsConsumed[itemConsumedIndex];
+    if (!itemConsumed){
+      throw new Meteor.Error('Resouce not found',
+        'Could not set ammo, because the ammo document was not found');
+    }
+    let itemToLink = CreatureProperties.findOne(itemId);
+    if (!itemToLink){
+      throw new Meteor.Error('Item not found',
+        'Could not set ammo: the item was not found');
+    }
+    let path = `resources.itemsConsumed.${itemConsumedIndex}.itemId`;
+    CreatureProperties.update(actionId, {
+      $set: {[path]: itemId}
+    }, {
+      selector: action,
+    });
+
+    // Changing the linked item does change the dependency tree
+    // TODO: We can predict exactly which deps will be affected instead of
+    //       recomputing the entire creature
+    recomputeCreatureByDoc(rootCreature);
+  },
+});
+
+export default selectAmmoItem;

app/imports/api/creature/creatureProperties/methods/softRemoveProperty.js

@@ -0,0 +1,37 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import SimpleSchema from 'simpl-schema';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import { softRemove } from '/imports/api/parenting/softRemove.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+import recomputeInventory from '/imports/api/creature/denormalise/recomputeInventory.js';
+
+const softRemoveProperty = new ValidatedMethod({
+	name: 'creatureProperties.softRemove',
+	validate: new SimpleSchema({
+		_id: SimpleSchema.RegEx.Id
+	}).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+	run({_id}){
+    // Permissions
+		let property = CreatureProperties.findOne(_id);
+    let rootCreature = getRootCreatureAncestor(property);
+    assertEditPermission(rootCreature, this.userId);
+
+    // Do work
+		softRemove({_id, collection: CreatureProperties});
+
+    // Potentially changes items and containers
+    recomputeInventory(rootCreature._id);
+    // Changes dependency tree by removing children
+    recomputeCreatureByDoc(rootCreature);
+	}
+});
+
+export default softRemoveProperty;

app/imports/api/creature/creatureProperties/methods/updateCreatureProperty.js

@@ -0,0 +1,67 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import { recomputeCreatureById } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+import recomputeInactiveProperties from '/imports/api/creature/denormalise/recomputeInactiveProperties.js';
+import recomputeInventory from '/imports/api/creature/denormalise/recomputeInventory.js';
+
+const updateCreatureProperty = new ValidatedMethod({
+  name: 'creatureProperties.update',
+  validate({_id, path}){
+		if (!_id) throw new Meteor.Error('No _id', '_id is required');
+		// We cannot change these fields with a simple update
+		switch (path[0]){
+			case 'type':
+      case 'order':
+      case 'parent':
+      case 'ancestors':
+			case 'damage':
+				throw new Meteor.Error('Permission denied',
+				'This property can\'t be updated directly');
+		}
+  },
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id, path, value}) {
+    // Permission
+    let property = CreatureProperties.findOne(_id, {
+      fields: {type: 1, ancestors: 1}
+    });
+    let rootCreature = getRootCreatureAncestor(property);
+    assertEditPermission(rootCreature, this.userId);
+
+    let pathString = path.join('.');
+    let modifier;
+    // unset empty values
+    if (value === null || value === undefined){
+      modifier = {$unset: {[pathString]: 1}};
+    } else {
+      modifier = {$set: {[pathString]: value}};
+    }
+		CreatureProperties.update(_id, modifier, {
+			selector: {type: property.type},
+		});
+
+    // Some updates might cause other properties to become inactive
+    if ([
+      'applied', 'equipped', 'prepared', 'alwaysPrepared', 'disabled'
+    ].includes(path[0])){
+      recomputeInactiveProperties(rootCreature._id);
+    }
+
+    if (property.type === 'item' || property.type === 'container'){
+      // Potentially changes items and containers
+      recomputeInventory(rootCreature._id);
+    }
+    // Updating a property is likely to change dependencies, do a full recompute
+    // denormalised stats might change, so fetch the creature again
+    recomputeCreatureById(rootCreature._id);
+  },
+});
+
+export default updateCreatureProperty;

app/imports/api/creature/creatureProperties/recomputeCreaturesByProperty.js

@@ -0,0 +1,12 @@
+import { recomputeCreatureById } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+
+/**
+ * Recomputes all ancestor creatures of this property
+ */
+export default function recomputeCreaturesByProperty(property){
+	for (let ref of property.ancestors){
+		if (ref.collection === 'creatures') {
+			recomputeCreatureById.call(ref.id);
+		}
+	}
+}

app/imports/api/creature/creatures/Creatures.js

@@ -1,14 +1,8 @@
-import { ValidatedMethod } from 'meteor/mdg:validated-method';
-import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
 import SimpleSchema from 'simpl-schema';
 import deathSaveSchema from '/imports/api/properties/subSchemas/DeathSavesSchema.js'
 import ColorSchema from '/imports/api/properties/subSchemas/ColorSchema.js';
 import SharingSchema from '/imports/api/sharing/SharingSchema.js';
-import {assertEditPermission} from '/imports/api/sharing/sharingPermissions.js';
-import { assertUserHasPaidBenefits } from '/imports/api/users/patreon/tiers.js';
-
-import '/imports/api/creature/removeCreature.js';
-import '/imports/api/creature/restCreature.js';
+import STORAGE_LIMITS from '/imports/constants/STORAGE_LIMITS.js';
 
 //set up the collection for creatures
 let Creatures = new Mongo.Collection('creatures');
@@ -34,6 +28,16 @@ let CreatureSettingsSchema = new SimpleSchema({
     type: Boolean,
     optional: true,
   },
+  // Show the tree tab
+  showTreeTab: {
+    type: Boolean,
+    optional: true,
+  },
+  // Hide the spells tab
+  hideSpellsTab: {
+    type: Boolean,
+    optional: true,
+  },
   // How much each hitDice resets on a long rest
   hitDiceResetMultiplier: {
     type: Number,
@@ -44,7 +48,7 @@ let CreatureSettingsSchema = new SimpleSchema({
   discordWebhook: {
     type: String,
     optional: true,
-    max: 200,
+    max: STORAGE_LIMITS.url,
   },
 });
 
@@ -54,22 +58,27 @@ let CreatureSchema = new SimpleSchema({
 		type: String,
 		defaultValue: '',
 		optional: true,
+    max: STORAGE_LIMITS.name,
 	},
 	alignment: {
 		type: String,
-		optional: true
+		optional: true,
+    max: STORAGE_LIMITS.name,
 	},
 	gender: {
 		type: String,
-		optional: true
+		optional: true,
+    max: STORAGE_LIMITS.name,
 	},
 	picture: {
 		type: String,
-		optional: true
+		optional: true,
+    max: STORAGE_LIMITS.url,
 	},
   avatarPicture: {
     type: String,
     optional: true,
+    max: STORAGE_LIMITS.url,
   },
 	// Mechanics
 	deathSave: {
@@ -91,8 +100,32 @@ let CreatureSchema = new SimpleSchema({
     type: SimpleSchema.Integer,
     defaultValue: 0,
   },
-  // Sum of all weights of items and containers that are carried
-	'denormalizedStats.weightCarried': {
+  // Inventory
+	'denormalizedStats.weightTotal': {
+		type: Number,
+		defaultValue: 0,
+	},
+  'denormalizedStats.weightEquipment': {
+		type: Number,
+		defaultValue: 0,
+	},
+  'denormalizedStats.weightCarried': {
+		type: Number,
+		defaultValue: 0,
+	},
+  'denormalizedStats.valueTotal': {
+		type: Number,
+		defaultValue: 0,
+	},
+  'denormalizedStats.valueEquipment': {
+		type: Number,
+		defaultValue: 0,
+	},
+  'denormalizedStats.valueCarried': {
+		type: Number,
+		defaultValue: 0,
+	},
+  'denormalizedStats.itemsAttuned': {
 		type: Number,
 		defaultValue: 0,
 	},
@@ -140,73 +173,8 @@ CreatureSchema.extend(SharingSchema);
 
 Creatures.attachSchema(CreatureSchema);
 
-const insertCreature = new ValidatedMethod({
 
-  name: 'creatures.insertCreature',
-
-  validate: null,
-
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 5,
-    timeInterval: 5000,
-  },
-
-  run() {
-    if (!this.userId) {
-      throw new Meteor.Error('Creatures.methods.insert.denied',
-      'You need to be logged in to insert a creature');
-    }
-    assertUserHasPaidBenefits(this.userId);
-
-		// Create the creature document
-    let charId = Creatures.insert({
-			owner: this.userId,
-		});
-		this.unblock();
-		return charId;
-  },
-
-});
-
-const updateCreature = new ValidatedMethod({
-  name: 'creatures.update',
-  validate({_id, path}){
-		if (!_id) return false;
-		// Allowed fields
-		let allowedFields = [
-      'name',
-      'alignment',
-      'gender',
-      'picture',
-      'avatarPicture',
-      'color',
-      'settings',
-    ];
-		if (!allowedFields.includes(path[0])){
-			throw new Meteor.Error('Creatures.methods.update.denied',
-      'This field can\'t be updated using this method');
-		}
-  },
-  mixins: [RateLimiterMixin],
-  rateLimit: {
-    numRequests: 5,
-    timeInterval: 5000,
-  },
-  run({_id, path, value}) {
-		let creature = Creatures.findOne(_id);
-    assertEditPermission(creature, this.userId);
-    if (value === undefined || value === null){
-      Creatures.update(_id, {
-        $unset: {[path.join('.')]: 1},
-      });
-    } else {
-      Creatures.update(_id, {
-        $set: {[path.join('.')]: value},
-      });
-    }
-  },
-});
+import '/imports/api/creature/creatures/methods/index.js';
 
 export default Creatures;
-export { CreatureSchema, insertCreature, updateCreature };
+export { CreatureSchema };

app/imports/api/creature/creatures/creaturePermissions.js

@@ -1,4 +1,4 @@
-import Creatures from '/imports/api/creature/Creatures.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
 import {
   assertEditPermission as editPermission,
   assertViewPermission as viewPermission,

app/imports/api/creature/creatures/defaultCharacterProperties.js

@@ -0,0 +1,47 @@
+import BUILT_IN_TAGS from '/imports/constants/BUILT_IN_TAGS.js';
+
+export default function defaultCharacterProperties(creatureId){
+  if (!creatureId) throw 'creatureId is required';
+  const creatureRef = {collection: 'creatures', id: creatureId};
+  let randomSrc = DDP.randomStream('defaultProperties');
+  const inventoryId = randomSrc.id();
+  const inventoryRef = {collection: 'creatureProperties', id: inventoryId};
+  return [
+    {
+      type: 'propertySlot',
+      name: 'Ruleset',
+      description: 'Choose a starting point for your character, this will define the basic setup of your character sheet. Without a base, your sheet will be empty.',
+      slotTags: ['base'],
+      tags: [],
+      quantityExpected: 1,
+      hideWhenFull: true,
+      spaceLeft: 1,
+      totalFilled: 0,
+      order: 0,
+      parent: creatureRef,
+      ancestors: [creatureRef],
+    }, {
+      _id: inventoryId,
+      type: 'folder',
+      name: 'Inventory',
+      tags: [BUILT_IN_TAGS.inventory],
+      order: 1,
+      parent: creatureRef,
+      ancestors: [creatureRef],
+    }, {
+      type: 'folder',
+      name: 'Equipment',
+      tags: [BUILT_IN_TAGS.equipment],
+      order: 2,
+      parent: inventoryRef,
+      ancestors: [creatureRef, inventoryRef],
+    }, {
+      type: 'folder',
+      name: 'Carried',
+      tags: [BUILT_IN_TAGS.carried],
+      order: 3,
+      parent: inventoryRef,
+      ancestors: [creatureRef, inventoryRef],
+    },
+  ];
+}

app/imports/api/creature/creatures/getCreatureUrlName.js

@@ -0,0 +1,5 @@
+import getSlug from 'speakingurl';
+
+export default function getCreatureUrlName({name}){
+  return getSlug(name, {maintainCase: true}) || '-';
+}

app/imports/api/creature/creatures/methods/index.js

@@ -0,0 +1,4 @@
+import '/imports/api/creature/creatures/methods/insertCreature.js';
+import '/imports/api/creature/creatures/methods/removeCreature.js';
+import '/imports/api/creature/creatures/methods/restCreature.js';
+import '/imports/api/creature/creatures/methods/updateCreature.js';

app/imports/api/creature/creatures/methods/insertCreature.js

@@ -0,0 +1,70 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import { getUserTier } from '/imports/api/users/patreon/tiers.js';
+import defaultCharacterProperties from '/imports/api/creature/creatures/defaultCharacterProperties.js';
+import insertPropertyFromLibraryNode from '/imports/api/creature/creatureProperties/methods/insertPropertyFromLibraryNode.js';
+
+const insertCreature = new ValidatedMethod({
+
+  name: 'creatures.insertCreature',
+
+  validate: null,
+
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+
+  run() {
+    if (!this.userId) {
+      throw new Meteor.Error('Creatures.methods.insert.denied',
+      'You need to be logged in to insert a creature');
+    }
+    let tier = getUserTier(this.userId);
+
+    let currentCharacterCount = Creatures.find({
+      owner: this.userId,
+    }, {
+      fields: {_id: 1},
+    }).count();
+
+    if (
+      tier.characterSlots !== -1 &&
+      currentCharacterCount >= tier.characterSlots
+    ){
+      throw new Meteor.Error('Creatures.methods.insert.denied',
+      `You are already at your limit of ${tier.characterSlots} characters`)
+    }
+
+		// Create the creature document
+    let creatureId = Creatures.insert({
+			owner: this.userId,
+		});
+
+    // Insert the default properties
+    // Not batchInsert because we want the properties cleaned by the schema
+    let baseId;
+    defaultCharacterProperties(creatureId).forEach(prop => {
+      let id = CreatureProperties.insert(prop);
+      if (prop.name === 'Ruleset'){
+        baseId = id;
+      }
+    });
+
+    if (Meteor.isServer){
+      // Insert the 5e ruleset as the default base
+      insertPropertyFromLibraryNode.call({
+        nodeIds: ['iHbhfcg3AL5isSWbw'],
+        parentRef: {id: baseId, collection: 'creatureProperties'},
+        order: 0.5,
+      });
+    }
+
+		return creatureId;
+  },
+});
+
+export default insertCreature;

app/imports/api/creature/creatures/methods/removeCreature.js

@@ -1,9 +1,9 @@
 import SimpleSchema from 'simpl-schema';
 import { ValidatedMethod } from 'meteor/mdg:validated-method';
 import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
-import { assertOwnership } from '/imports/api/creature/creaturePermissions.js';
-import Creatures from '/imports/api/creature/Creatures.js';
-import CreatureProperties from '/imports/api/creature/CreatureProperties.js';
+import { assertOwnership } from '/imports/api/creature/creatures/creaturePermissions.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
 import CreatureLogs from '/imports/api/creature/log/CreatureLogs.js';
 import Experiences from '/imports/api/creature/experience/Experiences.js';
 
@@ -28,10 +28,14 @@ const removeCreature = new ValidatedMethod({
   },
   run({charId}) {
     assertOwnership(charId, this.userId)
-    Creatures.remove(charId);
-		this.unblock();
-		removeRelatedDocuments(charId);
+    this.unblock();
+    removeCreatureWork(charId)
   },
 });
 
+export function removeCreatureWork(creatureId){
+  Creatures.remove(creatureId);
+  removeRelatedDocuments(creatureId);
+}
+
 export default removeCreature;

app/imports/api/creature/creatures/methods/restCreature.js

@@ -1,11 +1,10 @@
 import SimpleSchema from 'simpl-schema';
 import { ValidatedMethod } from 'meteor/mdg:validated-method';
 import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
-import Creatures from '/imports/api/creature/Creatures.js';
-import CreatureProperties from '/imports/api/creature/CreatureProperties.js';
-import getActiveProperties, { getActivePropertyFilter } from '/imports/api/creature/getActiveProperties.js';
-import { assertEditPermission } from '/imports/api/creature/creaturePermissions.js';
-import { recomputeCreatureById } from '/imports/api/creature/computation/recomputeCreature.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import { assertEditPermission } from '/imports/api/creature/creatures/creaturePermissions.js';
+import { recomputeCreatureById } from '/imports/api/creature/computation/methods/recomputeCreature.js';
 
 const restCreature = new ValidatedMethod({
   name: 'creature.methods.longRest',
@@ -43,11 +42,12 @@ const restCreature = new ValidatedMethod({
       resetFilter = {$in: ['shortRest', 'longRest']}
     }
     // Only apply to active properties
-    let filter = getActivePropertyFilter({
-      filter: {reset: resetFilter},
-      ancestorId: creatureId,
-      includeUntoggled: true,
-    });
+    let filter = {
+      'ancestors.id': creatureId,
+      reset: resetFilter,
+      removed: {$ne: true},
+      inactive: {$ne: true},
+    };
     // update all attribute's damage
     filter.type = 'attribute';
     CreatureProperties.update(filter, {
@@ -70,15 +70,19 @@ const restCreature = new ValidatedMethod({
     });
     // Reset half hit dice on a long rest, starting with the highest dice
     if (restType === 'longRest'){
-      let hitDice = getActiveProperties({
-        ancestorId: creatureId,
-        filter: {type: 'attribute', attributeType: 'hitDice'},
-        options: {fields: {
+      let hitDice = CreatureProperties.find({
+        'ancestors.id': creatureId,
+        type: 'attribute',
+        attributeType: 'hitDice',
+        removed: {$ne: true},
+        inactive: {$ne: true},
+      }, {
+        fields: {
           hitDiceSize: 1,
           damage: 1,
           value: 1,
-        }},
-      });
+        }
+      }).fetch();
       // Use a collator to do sorting in natural order
       let collator = new Intl.Collator('en', {
         numeric: true, sensitivity: 'base'

app/imports/api/creature/creatures/methods/updateCreature.js

@@ -0,0 +1,45 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import {assertEditPermission} from '/imports/api/sharing/sharingPermissions.js';
+
+const updateCreature = new ValidatedMethod({
+  name: 'creatures.update',
+  validate({_id, path}){
+		if (!_id) return false;
+		// Allowed fields
+		let allowedFields = [
+      'name',
+      'alignment',
+      'gender',
+      'picture',
+      'avatarPicture',
+      'color',
+      'settings',
+    ];
+		if (!allowedFields.includes(path[0])){
+			throw new Meteor.Error('Creatures.methods.update.denied',
+      'This field can\'t be updated using this method');
+		}
+  },
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id, path, value}) {
+		let creature = Creatures.findOne(_id);
+    assertEditPermission(creature, this.userId);
+    if (value === undefined || value === null){
+      Creatures.update(_id, {
+        $unset: {[path.join('.')]: 1},
+      });
+    } else {
+      Creatures.update(_id, {
+        $set: {[path.join('.')]: value},
+      });
+    }
+  },
+});
+
+export default updateCreature;

app/imports/api/creature/denormalise/recomputeDamageMultipliers.js

@@ -1,9 +1,9 @@
 import { ValidatedMethod } from 'meteor/mdg:validated-method';
 import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
 import SimpleSchema from 'simpl-schema';
-import { assertEditPermission } from '/imports/api/creature/creaturePermissions.js';
-import Creatures from '/imports/api/creature/Creatures.js';
-import getActiveProperties from '/imports/api/creature/getActiveProperties.js';
+import { assertEditPermission } from '/imports/api/creature/creatures/creaturePermissions.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
 
 export const recomputeDamageMultipliers = new ValidatedMethod({
 
@@ -31,9 +31,13 @@ export const recomputeDamageMultipliers = new ValidatedMethod({
 
 export function recomputeDamageMultipliersById(creatureId){
   if (!creatureId) throw 'Creature ID is required';
-  let props = getActiveProperties({
-    ancestorId: creatureId,
-    filter: {type: 'damageMultiplier'},
+  let props = CreatureProperties.find({
+    'ancestors.id': creatureId,
+    type: 'damageMultiplier',
+    removed: {$ne: true},
+    inactive: {$ne: true},
+  }, {
+    sort: {order: 1}
   });
 
   // Count of how many weakness, resistances and immunities each damage type has

app/imports/api/creature/denormalise/recomputeInactiveProperties.js

@@ -1,4 +1,4 @@
-import CreatureProperties from '/imports/api/creature/CreatureProperties.js';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
 
 export default function recomputeInactiveProperties(ancestorId){
   let disabledFilter = {
@@ -7,7 +7,6 @@ export default function recomputeInactiveProperties(ancestorId){
       {disabled: true}, // Everything can be disabled
       {type: 'buff', applied: false}, // Buffs can be applied
       {type: 'item', equipped: {$ne: true}},
-      {type: 'toggle', toggleResult: false},
       {type: 'spell', prepared: {$ne: true}, alwaysPrepared: {$ne: true}},
     ],
   };
@@ -20,9 +19,16 @@ export default function recomputeInactiveProperties(ancestorId){
   CreatureProperties.update({
     'ancestors.id': ancestorId,
     '_id': {$in: disabledIds},
-    $or: [{inactive: {$ne: true}}, {deactivatedByAncestor: true}],
+    $or: [
+      {inactive: {$ne: true}},
+      {deactivatedBySelf: {$ne: true}},
+      {deactivatedByAncestor: true},
+    ],
   }, {
-    $set: {inactive: true},
+    $set: {
+      inactive: true,
+      deactivatedBySelf: true,
+    },
     $unset: {deactivatedByAncestor: 1},
   }, {
     multi: true,
@@ -31,7 +37,10 @@ export default function recomputeInactiveProperties(ancestorId){
   // Decendants of inactive properties
   CreatureProperties.update({
     'ancestors.id': {$eq: ancestorId, $in: disabledIds},
-    $or: [{inactive: {$ne: true}}, {deactivatedByAncestor: {$ne: true}}],
+    $or: [
+      {inactive: {$ne: true}},
+      {deactivatedByAncestor: {$ne: true}},
+    ],
   }, {
     $set: {
       inactive: true,
@@ -46,11 +55,18 @@ export default function recomputeInactiveProperties(ancestorId){
   CreatureProperties.update({
     'ancestors.id': {$eq: ancestorId, $nin: disabledIds},
     '_id': {$nin: disabledIds},
-    $or: [{inactive: true}, {deactivatedByAncestor: true}],
+    // if it was a toggle responsible, we leave it alone
+    deactivatedByToggle: {$ne: true},
+    $or: [
+      {inactive: true},
+      {deactivatedByAncestor: true},
+      {deactivatedBySelf: true}
+    ],
   }, {
     $unset: {
       inactive: 1,
       deactivatedByAncestor: 1,
+      deactivatedBySelf: 1,
     },
   }, {
     multi: true,

app/imports/api/creature/denormalise/recomputeInventory.js

@@ -0,0 +1,111 @@
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+import Creatures from '/imports/api/creature/creatures/Creatures.js';
+import nodesToTree from '/imports/api/parenting/nodesToTree.js';
+
+export default function recomputeInventory(creatureId){
+  let inventoryForest = nodesToTree({
+    collection: CreatureProperties,
+    ancestorId: creatureId,
+    filter: {
+      type: {$in: ['container', 'item']},
+    },
+    deactivatedByAncestor: {$ne: true},
+  });
+  let containersToWrite = [];
+  let data =  getChildrenInventoryData(inventoryForest, containersToWrite);
+  containersToWrite.forEach(container => {
+    CreatureProperties.update(container._id, {$set: {
+      contentsWeight: container.contentsWeight,
+      contentsValue: container.contentsValue,
+    }}, {selector: {type: 'container'}});
+  });
+  Creatures.update(creatureId, {$set: {
+    'denormalizedStats.weightTotal': data.weightTotal,
+    'denormalizedStats.weightEquipment': data.weightEquipment,
+    'denormalizedStats.weightCarried': data.weightCarried,
+    'denormalizedStats.valueTotal': data.valueTotal,
+    'denormalizedStats.valueEquipment': data.valueEquipment,
+    'denormalizedStats.valueCarried': data.valueCarried,
+    'denormalizedStats.itemsAttuned': data.itemsAttuned,
+  }});
+  return data;
+}
+
+function getChildrenInventoryData(forest, containersToWrite){
+  let data = {
+    weightTotal: 0,
+    weightEquipment: 0,
+    weightCarried: 0,
+    valueTotal: 0,
+    valueEquipment: 0,
+    valueCarried: 0,
+    itemsAttuned: 0,
+  }
+  forest.forEach(tree => {
+    let treeData = getInventoryData(tree, containersToWrite);
+    for (let key in data){
+      data[key] += treeData[key] || 0;
+    }
+  });
+  return data;
+}
+
+function getInventoryData(tree, containersToWrite){
+  let data = {
+    weightTotal: 0,
+    weightEquipment: 0,
+    weightCarried: 0,
+    valueTotal: 0,
+    valueEquipment: 0,
+    valueCarried: 0,
+    itemsAttuned: 0,
+  }
+  let childData = getChildrenInventoryData(tree.children, containersToWrite);
+  let node = tree.node;
+  if (node.type === 'container'){
+    data.weightTotal += node.weight || 0;
+    data.valueTotal += node.value || 0;
+    data.weightCarried += node.weight || 0;
+    data.valueCarried += node.value || 0;
+    storeContentsData(node, childData, containersToWrite);
+  } else if (node.type === 'item'){
+    data.weightTotal += (node.weight * node.quantity) || 0;
+    data.valueTotal += (node.value * node.quantity) || 0;
+    data.weightCarried += (node.weight * node.quantity) || 0;
+    data.valueCarried += (node.value * node.quantity) || 0;
+    if (node.equipped){
+      data.weightEquipment += (node.weight * node.quantity) || 0;
+      data.valueEquipment += (node.value * node.quantity) || 0;
+    }
+    if (node.attuned){
+      data.itemsAttuned += 1;
+    }
+  }
+  for (let key in data){
+    data[key] += childData[key];
+  }
+  if (node.contentsWeightless){
+    data.weightCarried = node.weight;
+  }
+  if (node.carried === false){
+    data.weightCarried = 0;
+    data.valueCarried = 0;
+  }
+  return data
+}
+
+function storeContentsData(node, childData, containersToWrite){
+  let newContentsWeight = childData.weightCarried
+  if (node.contentsWeight !== newContentsWeight){
+    node.contentsWeight = newContentsWeight;
+    node.contentsWeightChanged = true;
+  }
+  let newContentsValue = childData.valueCarried;
+  if (node.contentsValue !== newContentsValue){
+    node.contentsValue = newContentsValue;
+    node.contentsValueChanged = true;
+  }
+  if (node.contentsWeightChanged || node.contentsValueChanged){
+    containersToWrite.push(node);
+  }
+}