Fixed slots with computed expected quantity not hiding when full

Slot fillers removed from a library can no longer be added to a slot.
If a slot has limited space left, this will be reflected on the error 
finding slots message

.codio

@@ -1,14 +0,0 @@
-{
-// Configure your Run and Preview buttons here.
-
-// Run button configuration
-  "commands": {
-        "Run Meteor": "cd rpg-docs \n ROOT_URL=http://period-sheriff.codio.io:3000 meteor"
-  },
-
-// Preview button configuration
-  "preview": {
-      "Prieview": "http://period-sheriff-3000.codio.io",
-	  "Ungit": "https://period-sheriff-9501.codio.io/#/repository?path=/home/codio/workspace"
-  }
-}

.idea/inspectionProfiles/Project_Default.xml

@@ -1,13 +0,0 @@
-<component name="InspectionProjectProfileManager">
-  <profile version="1.0">
-    <option name="myName" value="Project Default" />
-    <inspection_tool class="HtmlUnknownAttribute" enabled="false" level="WARNING" enabled_by_default="false">
-      <option name="myValues">
-        <value>
-          <list size="0" />
-        </value>
-      </option>
-      <option name="myCustomValuesEnabled" value="true" />
-    </inspection_tool>
-  </profile>
-</component>

.idea/inspectionProfiles/profiles_settings.xml

@@ -1,7 +0,0 @@
-<component name="InspectionProjectProfileManager">
-  <settings>
-    <option name="PROJECT_PROFILE" value="Project Default" />
-    <option name="USE_PROJECT_PROFILE" value="true" />
-    <version value="1.0" />
-  </settings>
-</component>

.jscsrc

@@ -1,56 +0,0 @@
-{
-	"requireOperatorBeforeLineBreak": true,
-	"requireCamelCaseOrUpperCaseIdentifiers": true,
-	"maximumLineLength": {
-		"value": 80,
-		"allowComments": true,
-		"allowRegex": true
-	},
-	"validateIndentation": "\t",
-	"validateQuoteMarks": "\"",
-
-	"disallowMultipleLineStrings": true,
-	"disallowMixedSpacesAndTabs": "smart",
-	"disallowTrailingWhitespace": true,
-	"disallowSpaceAfterPrefixUnaryOperators": true,
-	"disallowMultipleVarDecl": true,
-	"disallowNewlineBeforeBlockStatements": true,
-	"disallowKeywordsOnNewLine": ["else"],
-
-	"requireSpaceAfterKeywords": [
-		"if",
-		"else",
-		"for",
-		"while",
-		"do",
-		"switch",
-		"return",
-		"try",
-		"catch"
-	],
-	"requireSpaceBeforeBinaryOperators": [
-		"=", "+=", "-=", "*=", "/=", "%=", "<<=", ">>=", ">>>=",
-		"&=", "|=", "^=", "+=",
-
-		"+", "-", "*", "/", "%", "<<", ">>", ">>>", "&",
-		"|", "^", "&&", "||", "===", "==", ">=",
-		"<=", "<", ">", "!=", "!=="
-	],
-	"requireSpaceAfterBinaryOperators": true,
-	"requireSpacesInConditionalExpression": true,
-	"requireSpacesInForStatement": true,
-	"requireTrailingComma": {
-		"ignoreSingleValue": true,
-		"ignoreSingleLine": true
-	},
-	"requireLineFeedAtFileEnd": true,
-	"disallowSpacesInAnonymousFunctionExpression": {
-		"beforeOpeningRoundBrace": true
-	},
-	"disallowSpacesInsideObjectBrackets": "all",
-	"disallowSpacesInsideArrayBrackets": "all",
-	"disallowSpacesInsideParentheses": true,
-
-	"disallowMultipleLineBreaks": true,
-	"disallowNewlineBeforeBlockStatements": true
-}

.jshintrc

@@ -1,3 +0,0 @@
-{
-	"undef": false
-}

Dockerfile

@@ -0,0 +1,14 @@
+FROM ubuntu:latest
+RUN apt-get update --quiet \
+    && apt-get install --quiet --yes \
+    bsdtar \
+    curl \
+    git
+RUN ln --symbolic --force $(which bsdtar) $(which tar)
+RUN useradd --create-home --shell /bin/bash dicecloud
+USER dicecloud
+WORKDIR /home/dicecloud
+RUN curl https://install.meteor.com/?release=1.8.0.2 | sh
+ENV PATH="${PATH}:/home/dicecloud/.meteor"
+COPY dev.sh ./dev.sh
+ENTRYPOINT ./dev.sh

License.md

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
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+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
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+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
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+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    {one line to give the program's name and a brief idea of what it does.}
+    Copyright (C) {year}  {name of author}
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    {project}  Copyright (C) {year}  {fullname}
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

README.md

@@ -1,58 +1,70 @@
-TODO
-====
+DiceCloud
+========
 
-* Get Polymer installed using bower.
-* Install Vulcanize package listed below
-* Copy the differential polymer demo to get polymer implemented nicely
-* Update Meteor
-* Install and use LESS
+This is the repo for [DiceCloud](dicecloud.com).
 
-Packages used
-=============
+DiceCloud is a free, auditable, real-time character sheet for D&D 5e.
 
-* meteor-platform  
-    * Base Meteor. 
-    * [Docs](http://docs.meteor.com/#/full/)
-* autopublish
-    * Publishes everything to the client. 
-    * Must be removed before release
-* insecure
-    * Allows the client the freedom to modify any colleciton.
-    * Must be removed before release
-* iron:router
-    * Enables pagination and URL's to direct to specific templates.
-    * [Tutorial](http://www.manuel-schoebel.com/blog/iron-router-tutorial)
-* accounts-password
-    * Lets users create accounts with a simple password
-* accounts-ui
-    * Adds simple UI for logging in
-* random
-    * Somewhat decent cryptographically strong psuedo random number generation.
-    * [readme](https://atmospherejs.com/meteor/random)
-* dburles:collection-helpers
-    * Adds template-style helpers to collections. [github page](https://github.com/dburles/meteor-collection-helpers)
-* reactive-var
-    * Friendly reactive variables
-    * [Meteor Docs](http://docs.meteor.com/#/full/reactivevar_pkg)
-* cw4gn3r:jquery-event-drag
-    * Adds jquery drag events
-* underscore
-    * Handy javascript utilities
-    * [Docs](http://underscorejs.org/)
-* aldeed:collection2
-    * Extends collections with Schemas 
-    * [(gitHub page)](https://github.com/aldeed/meteor-collection2) 
-    * uses [SimpleSchema](https://github.com/aldeed/meteor-simple-schema)
-* aldeed:autoform
-    * Automatically generates bootstrap forms for collection2 Schemas.
-    * [github](https://github.com/aldeed/meteor-autoform)
-* differential:vulcanize
-	* Bakes all the polymer imports into one file
-	* [github](https://github.com/Differential/meteor-vulcanize)
+Philosophy
+----------
 
-************
+Setting up your character on DiceCloud takes a little longer than
+just filling it in on a paper character sheet would. The goal of using an
+online sheet is to make actually playing the game more streamlined, and
+ultimately more fun. So putting a little extra effort into setting up a
+character now pays off over and over again once you're playing.
 
-Resources
-=========
+The idea is to track where each number comes from, and allow you to easily make
+changes on the fly. Let's look at a hypothetical example.
 
-[differential's polymer demo](https://github.com/Differential/polymer-demo)
+> You need to swim through a sunken section of dungeon to fetch the quest's Thing.
+> You'll need to take off your magical Plate Armor of +1 Constitution to swim
+> without sinking, of course.
+>
+> Taking it off will take away that disadvantage on
+> stealth checks, change your armor class, your speed and your constitution, and
+> which in turn changes your hit points and your constitution saving throw.
+> Working out all those changes in the middle of a game will drag the game to a
+> halt.
+>
+> Fortunately you have DiceCloud, so it's a matter of dragging
+> your Plate Armor +1 Con from your "equipment" box to your "backpack" box and
+> you're done. Your hitpoints change correctly, your saving throws are up to date,
+> your armor class goes back to reflecting the fact that you have natural armor
+> from being a dragonborn. Your character sheet keeps up and you
+> ultimately get more time to play the game. Huzzah!
+
+Getting started
+---------------
+
+Running DiceCloud locally, either to host it yourself away from an internet
+connection, or to contribute to developing it further, is fairly
+straightforward and it should work on Linux, Windows, and Mac.
+
+You'll need to have installed:
+
+- [git](https://www.atlassian.com/git/tutorials/install-git)
+- [Meteor](https://www.meteor.com/install)
+
+Then, it's just a matter of cloning this repository into a folder, and running
+`meteor` in the app directory.
+
+`git clone https://github.com/ThaumRystra/DiceCloud dicecloud`  
+`cd dicecloud`  
+`cd app`  
+`meteor npm install`  
+`meteor`
+
+You should see this:
+
+```
+=> Started proxy.
+=> [HMR] Dev server listening on port 3003.
+=> Started MongoDB.
+=> Started your app.
+
+=> App running at: http://localhost:3000/
+```
+
+Now, visiting [](http://localhost:3000/) should show you an empty instance of
+DiceCloud running.

app/.gitignore

@@ -0,0 +1,11 @@
+.meteor/local
+.meteor/meteorite
+.demeteorized
+.cache
+settings.json
+public/components
+public/_imports.html
+private/oldClient
+nohup.out
+node_modules
+dump

app/.meteor/.finished-upgraders

@@ -0,0 +1,19 @@
+# This file contains information which helps Meteor properly upgrade your
+# app when you run 'meteor update'. You should check it into version control
+# with your project.
+
+notices-for-0.9.0
+notices-for-0.9.1
+0.9.4-platform-file
+notices-for-facebook-graph-api-2
+1.2.0-standard-minifiers-package
+1.2.0-meteor-platform-split
+1.2.0-cordova-changes
+1.2.0-breaking-changes
+1.3.0-split-minifiers-package
+1.4.0-remove-old-dev-bundle-link
+1.4.1-add-shell-server-package
+1.4.3-split-account-service-packages
+1.5-add-dynamic-import-package
+1.7-split-underscore-from-meteor-base
+1.8.3-split-jquery-from-blaze

app/.meteor/packages

@@ -0,0 +1,56 @@
+# Meteor packages used by this project, one per line.
+#
+# '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
+dburles:collection-helpers
+reactive-var@1.0.11
+underscore@1.0.10
+momentjs:moment
+dburles:mongo-collection-instances
+percolate:migrations
+accounts-google@1.3.3
+email@2.0.0
+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
+templates:array
+ecmascript@0.14.3
+es5-shim@4.8.0
+reactive-dict@1.3.0
+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
+mdg:validated-method
+akryum:vue-router2
+static-html
+aldeed:collection2@3.0.0
+aldeed:schema-index
+akryum:vue-component
+accounts-patreon
+bozhao:link-accounts
+peerlibrary:reactive-publish
+simple:rest
+simple:rest-method-mixin
+mikowals:batch-insert
+peerlibrary:subscription-data

app/.meteor/release

@@ -0,0 +1 @@
+METEOR@1.11.1

app/.meteor/versions

@@ -0,0 +1,142 @@
+accounts-base@1.7.0
+accounts-google@1.3.3
+accounts-oauth@1.2.0
+accounts-password@1.6.2
+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
+aldeed:schema-index@3.0.0
+allow-deny@1.1.0
+autoupdate@1.6.0
+babel-compiler@7.5.3
+babel-runtime@1.5.0
+base64@1.0.12
+binary-heap@1.0.11
+blaze@2.3.4
+blaze-tools@1.0.10
+boilerplate-generator@1.7.1
+bozhao:link-accounts@2.2.1
+caching-compiler@1.2.2
+caching-html-compiler@1.1.3
+callback-hook@1.3.0
+check@1.3.1
+chuangbo:marked@0.3.5_1
+coffeescript@2.4.1
+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-common@1.4.0
+ddp-rate-limiter@1.0.9
+ddp-server@2.3.2
+deps@1.0.12
+diff-sequence@1.1.1
+dynamic-import@0.5.3
+ecmascript@0.14.3
+ecmascript-runtime@0.7.0
+ecmascript-runtime-client@0.11.0
+ecmascript-runtime-server@0.10.0
+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
+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
+livedata@1.0.18
+lmieulet:meteor-coverage@1.1.4
+localstorage@1.2.0
+logging@1.1.20
+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
+mobile-experience@1.1.0
+mobile-status-bar@1.1.0
+modern-browsers@0.1.5
+modules@0.15.0
+modules-runtime@0.12.0
+momentjs:moment@2.29.1
+mongo@1.10.0
+mongo-decimal@0.1.1
+mongo-dev-server@1.1.0
+mongo-id@1.0.7
+npm-bcrypt@0.9.3
+npm-mongo@3.8.1
+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
+peerlibrary:subscription-data@0.8.0
+percolate:migrations@0.9.8
+percolate:synced-cron@1.3.2
+promise@0.11.2
+raix:eventemitter@0.1.3
+random@1.2.0
+rate-limit@1.0.9
+reactive-dict@1.3.0
+reactive-var@1.0.11
+reload@1.3.0
+retry@1.1.0
+routepolicy@1.1.0
+seba:minifiers-autoprefixer@1.2.1
+service-configuration@1.0.11
+session@1.2.0
+sha@1.0.9
+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
+srp@1.1.0
+standard-minifier-js@2.6.0
+static-html@1.2.2
+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
+tracker@1.2.0
+underscore@1.0.10
+url@1.3.1
+webapp@1.9.1
+webapp-hashing@1.0.9

app/client/head.html

@@ -1,9 +1,8 @@
 <head>
-	<meta name="viewport" content="width=device-width initial-scale=1.0, user-scalable=no">
+  <link href="https://fonts.googleapis.com/css?family=Roboto:100,300,400,500,700,900|Material+Icons" rel="stylesheet">
+  <meta name="viewport" content="width=device-width initial-scale=1.0, user-scalable=no">
 	<meta name="mobile-web-app-capable" content="yes">
-	<link href='https://fonts.googleapis.com/css?family=Roboto:400,300,300italic,400italic,500,500italic,700,700italic,900,900italic,100italic,100&subset=latin,latin-ext' rel='stylesheet' type='text/css'>
-	<script src="/components/webcomponentsjs/webcomponents.js"></script>
-
+	<meta name="apple-mobile-web-app-capable" content="yes">
 	<link rel="apple-touch-icon" sizes="57x57" href="/apple-touch-icon-57x57.png?v=lk6WXp6Pmj">
 	<link rel="apple-touch-icon" sizes="60x60" href="/apple-touch-icon-60x60.png?v=lk6WXp6Pmj">
 	<link rel="apple-touch-icon" sizes="72x72" href="/apple-touch-icon-72x72.png?v=lk6WXp6Pmj">
@@ -23,4 +22,17 @@
 	<meta name="msapplication-TileColor" content="#b91d1d">
 	<meta name="msapplication-TileImage" content="/mstile-144x144.png?v=lk6WXp6Pmj">
 	<meta name="theme-color" content="#d12929">
+
+	<style type="text/css" media="print">
+		@page {
+			margin: 0mm;
+		}
+		html {
+			margin: 0px;
+		}
+		* {
+			-webkit-transition: none !important;
+			transition: none !important;
+		}
+	</style>
 </head>

app/client/index.html

@@ -0,0 +1,3 @@
+<body>
+  <div id="app"></div>
+</body>

app/client/main.js

@@ -0,0 +1,3 @@
+import '/imports/ui/vueSetup.js';
+import '/imports/ui/styles/stylesIndex.js';
+import '/imports/client/config.js';

app/imports/api/creature/Creatures.js

@@ -0,0 +1,251 @@
+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 CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.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';
+
+//set up the collection for creatures
+let Creatures = new Mongo.Collection('creatures');
+
+let CreatureSettingsSchema = new SimpleSchema({
+	//slowed down by carrying too much?
+	useVariantEncumbrance: {
+		type: Boolean,
+		optional: true,
+	},
+	//hide spellcasting tab
+	hideSpellcasting: {
+		type: Boolean,
+		optional: true,
+	},
+	// Swap around the modifier and stat
+	swapStatAndModifier: {
+		type: Boolean,
+		optional: true,
+	},
+  // Hide all the unused stats
+  hideUnusedStats: {
+    type: Boolean,
+    optional: true,
+  },
+  // How much each hitDice resets on a long rest
+  hitDiceResetMultiplier: {
+    type: Number,
+    optional: true,
+    min: 0,
+    max: 1,
+  },
+  discordWebhook: {
+    type: String,
+    optional: true,
+    max: 200,
+  },
+});
+
+let CreatureSchema = new SimpleSchema({
+	// Strings
+	name: {
+		type: String,
+		defaultValue: '',
+		optional: true,
+	},
+	alignment: {
+		type: String,
+		optional: true
+	},
+	gender: {
+		type: String,
+		optional: true
+	},
+	picture: {
+		type: String,
+		optional: true
+	},
+  avatarPicture: {
+    type: String,
+    optional: true,
+  },
+	// Mechanics
+	deathSave: {
+		type: deathSaveSchema,
+		defaultValue: {},
+	},
+  // Stats that are computed and denormalised outside of recomputation
+  denormalizedStats: {
+    type: Object,
+    defaultValue: {},
+  },
+  // Sum of all XP gained by this character
+	'denormalizedStats.xp': {
+		type: SimpleSchema.Integer,
+		defaultValue: 0,
+	},
+  // Sum of all levels granted by milestone XP
+  'denormalizedStats.milestoneLevels': {
+    type: SimpleSchema.Integer,
+    defaultValue: 0,
+  },
+  // 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,
+	},
+  // Version of computation engine that was last used to compute this creature
+  computeVersion: {
+		type: String,
+    optional: true,
+	},
+	type: {
+		type: String,
+		defaultValue: 'pc',
+		allowedValues: ['pc', 'npc', 'monster'],
+	},
+  damageMultipliers: {
+    type: Object,
+		blackbox: true,
+		defaultValue: {}
+  },
+	variables: {
+		type: Object,
+		blackbox: true,
+		defaultValue: {}
+	},
+
+  // Tabletop
+  tabletop: {
+    type: String,
+    regEx: SimpleSchema.RegEx.id,
+    optional: true,
+  },
+  initiativeRoll: {
+    type: SimpleSchema.Integer,
+    optional: true,
+  },
+
+	// Settings
+	settings: {
+		type: CreatureSettingsSchema,
+		defaultValue: {},
+	},
+});
+
+CreatureSchema.extend(ColorSchema);
+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 creatureId = Creatures.insert({
+			owner: this.userId,
+		});
+    CreatureProperties.insert({
+      slotTags: ['base'],
+      quantityExpected: 1,
+      type: 'propertySlot',
+      name: 'Base',
+      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.',
+      hideWhenFull: true,
+      parent: {collection: 'creatures', id: creatureId},
+      ancestors: [{collection: 'creatures', id: creatureId}],
+      order: 0,
+      tags: [],
+      spaceLeft: 1,
+      totalFilled: 0,
+    });
+		this.unblock();
+		return creatureId;
+  },
+
+});
+
+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 Creatures;
+export { CreatureSchema, insertCreature, updateCreature };

app/imports/api/creature/Parties.js

@@ -0,0 +1,28 @@
+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

@@ -0,0 +1,13 @@
+import spendResources from '/imports/api/creature/actions/spendResources.js'
+import embedInlineCalculations from '/imports/api/creature/computation/afterComputation/embedInlineCalculations.js';
+
+export default function applyAction({prop, log}){
+  let content = { name: prop.name };
+  if (prop.summary){
+    content.description = embedInlineCalculations(
+      prop.summary, prop.summaryCalculations
+    );
+  }
+  log.content.push(content);
+  spendResources({prop, log});
+}

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

@@ -0,0 +1,55 @@
+import evaluateString from '/imports/api/creature/computation/afterComputation/evaluateString.js';
+import damagePropertiesByName from '/imports/api/creature/creatureProperties/methods/damagePropertiesByName.js';
+
+export default function applyAdjustment({
+  prop,
+  creature,
+  targets,
+  actionContext,
+  log
+}){
+  let damageTargets = prop.target === 'self' ? [creature] : targets;
+  let scope = {
+    ...creature.variables,
+    ...actionContext,
+  };
+  var {result, context} = evaluateString({
+    string: prop.amount,
+    scope,
+    fn: 'reduce'
+  });
+  context.errors.forEach(e => {
+    log.content.push({
+      name: 'Attribute damage error',
+      error: e.message || e.toString(),
+    });
+  });
+  if (damageTargets) {
+    damageTargets.forEach(target => {
+      if (prop.target === 'each'){
+        ({result} = evaluateString({
+          string: prop.amount,
+          scope,
+          fn: 'reduce'
+        }));
+      }
+      damagePropertiesByName.call({
+        creatureId: target._id,
+        variableName: prop.stat,
+        operation: prop.operation || 'increment',
+        value: result.value,
+      });
+      log.content.push({
+        name: 'Attribute damage',
+        resultPrefix: `${prop.stat} ${prop.operation === 'set' ? 'set to' : ''}`,
+        result: `${result.isNumber ? -result.value : result.toString()}`,
+      });
+    });
+  } else {
+    log.content.push({
+      name: 'Attribute damage',
+      resultPrefix: `${prop.stat} ${prop.operation === 'set' ? 'set to' : ''}`,
+      result: `${result.isNumber ? -result.value : result.toString()}`,
+    });
+  }
+}

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

@@ -0,0 +1,23 @@
+import roll from '/imports/parser/roll.js';
+
+export default function applyAttack({
+  prop,
+  log,
+  actionContext,
+  creature,
+}){
+  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',
+    resultPrefix: `1d20 [${value}] + ${prop.rollBonusResult} = `,
+    result,
+  });
+}

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

@@ -0,0 +1,61 @@
+import {
+	setLineageOfDocs,
+	renewDocIds
+} from '/imports/api/parenting/parenting.js';
+import {setDocToLastOrder} from '/imports/api/parenting/order.js';
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+
+export default function applyBuff({
+  prop,
+  children,
+  creature,
+  targets = [],
+  //actionContext,
+}){
+  let buffTargets = prop.target === 'self' ? [creature] : targets;
+
+  //let scope = {
+  //  ...creature.variables,
+  //  ...actionContext,
+  //};
+
+  // TODO
+  // If the target is not self, walk through all decendants and replace
+  // variables in calculations with their values from the creature scope
+  // If the target is self, replace all the target.x references with just x
+
+  // Then copy the decendants of the buff to the targets
+  prop.applied = true;
+  let propList = [prop];
+  function addChildrenToPropList(children){
+    children.forEach(child => {
+      propList.push(child.node);
+      addChildrenToPropList(child.children);
+    });
+  }
+  addChildrenToPropList(children);
+  let oldParent = {
+    id: prop.parent.id,
+    collection: prop.parent.collection,
+  };
+  buffTargets.forEach(target => {
+    copyNodeListToTarget(propList, target, oldParent);
+  });
+}
+
+function copyNodeListToTarget(propList, target, oldParent){
+  let ancestry = [{collection: 'creatures', id: target._id}];
+  setLineageOfDocs({
+    docArray: propList,
+    newAncestry: ancestry,
+    oldParent,
+  });
+  renewDocIds({
+    docArray: propList,
+  });
+  setDocToLastOrder({
+    collection: CreatureProperties,
+    doc: propList[0],
+  });
+  CreatureProperties.batchInsert(propList);
+}

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

@@ -0,0 +1,121 @@
+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 { CompilationContext } from '/imports/parser/parser.js';
+
+export default function applyDamage({
+  prop,
+  creature,
+  targets,
+  actionContext,
+  log,
+}){
+  let damageTargets = prop.target === 'self' ? [creature] : targets;
+  let scope = {
+    ...creature.variables,
+    ...actionContext,
+  };
+  // Add the target's variables to the scope
+  if (targets.length === 1){
+    scope.target = targets[0].variables;
+  }
+  // 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',
+      error: 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, 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',
+          error: result.toString(),
+        });
+        return;
+      }
+
+      // Deal the damage to the target
+      let damageDealt = dealDamage.call({
+        creatureId: target._id,
+        damageType: prop.damageType,
+        amount: result.value,
+      });
+
+      // Log the damage done
+      if (target._id === creature._id){
+        // Target is same as self, log damage as such
+        log.content.push({
+          name,
+          result: damageDealt,
+          details: suffix + ' to self',
+        });
+      } else {
+        log.content.push({
+          name,
+          resultPrefix: 'Dealt ',
+          result: damageDealt,
+          details: suffix + `${target.name && ' to '}${target.name}`,
+        });
+        // Log the damage received on that creature's log as well
+        insertCreatureLog.call({
+          log: {
+            content: [{
+              name,
+              resultPrefix: 'Recieved ',
+              result: damageDealt,
+              details: suffix,
+            }],
+            creatureId: target._id,
+          }
+        });
+      }
+    });
+  } else {
+    // There are no targets, just log the result
+    log.content.push({
+      name: prop.damageType === 'healing' ? 'Healing' : 'Damage',
+      result: result.toString(),
+      details: suffix,
+    });
+  }
+}

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

@@ -0,0 +1,81 @@
+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 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.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);
+      break;
+    case 'attack':
+      applyAction(options);
+      applyAttack(options);
+      break;
+    case 'damage':
+      applyDamage(options);
+      break;
+    case 'adjustment':
+      applyAdjustment(options);
+      break;
+    case 'buff':
+      applyBuff(options);
+      return false;
+    case 'toggle':
+      return applyToggle(options);
+    case 'roll':
+      applyRoll(options);
+      break;
+    case 'savingThrow':
+      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, targets, ...options}){
+  forest.forEach(node => {
+    let prop = node.node;
+    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 +1,26 @@
+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,
+    resultPrefix: prop.variableName + ' = ' + prop.roll + ' = ',
+    result: result.toString(),
+  });
+}

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

@@ -0,0 +1,77 @@
+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,
+      resultPrefix: ' DC ',
+      result: 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({
+          error: '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',
+        resultPrefix,
+        result,
+        details: saveSuccess ? 'Passed' : 'Failed'
+      });
+      return !saveSuccess;
+    } else {
+      // TODO
+      return true;
+    }
+  } catch (e){
+    log.content.push({
+      error: e.toString(),
+    });
+  }
+}

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

@@ -0,0 +1,34 @@
+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',
+      error: result.toString(),
+    });
+    return false;
+  }
+  log.content.push({
+    name: prop.name || 'Toggle',
+    resultPrefix: prop.condition + ' = ',
+    result: result.toString(),
+  });
+  return !!result.value;
+}

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

@@ -0,0 +1,79 @@
+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.js';
+import { damagePropertyWork } from '/imports/api/creature/creatureProperties/methods/damageProperty.js';
+import { assertEditPermission } from '/imports/api/creature/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';
+
+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,
+      });
+    }
+		doActionWork({
+      action: spell,
+      context: {slotLevel},
+      creature,
+      targets: [target],
+      method: this,
+    });
+    // Note this only recomputes the top-level creature, not the nearest one
+		recomputeCreatureByDoc(creature);
+    if (target){
+      recomputeCreatureByDoc(target);
+    }
+  },
+});
+
+export default castSpellWithSlot;

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

@@ -0,0 +1,94 @@
+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.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/creaturePermissions.js';
+import { recomputeCreatureByDoc } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+import { nodesToTree } from '/imports/api/parenting/parenting.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';
+
+const doAction = new ValidatedMethod({
+  name: 'creatureProperties.doAction',
+  validate: new SimpleSchema({
+    actionId: SimpleSchema.RegEx.Id,
+    targetIds: {
+      type: Array,
+      defaultValue: [],
+      maxCount: 10,
+      optional: true,
+    },
+    'targetIds.$': {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 10,
+    timeInterval: 5000,
+  },
+  run({actionId, targetIds = []}) {
+    let action = CreatureProperties.findOne(actionId);
+		// Check permissions
+    let creature = getRootCreatureAncestor(action);
+    assertEditPermission(creature, this.userId);
+    let targets = [];
+    targetIds.forEach(targetId => {
+      let target = Creatures.findOne(targetId);
+      assertEditPermission(target, this.userId);
+      targets.push(target);
+    });
+		doActionWork({action, creature, targets, 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);
+    targets.forEach(target => {
+      recomputeInactiveProperties(target._id);
+      recomputeCreatureByDoc(target);
+    });
+  },
+});
+
+export function doActionWork({
+  action,
+  creature,
+  targets,
+  context = {},
+  method
+}){
+  // Create the log
+  let log = CreatureLogSchema.clean({
+    creatureId: creature._id,
+    creatureName: creature.name,
+  });
+
+  let decendantForest = nodesToTree({
+    collection: CreatureProperties,
+    ancestorId: action._id,
+  });
+  let startingForest = [{
+    node: action,
+    children: decendantForest,
+  }];
+  applyProperties({
+    forest: startingForest,
+    actionContext: context,
+    creature,
+    targets,
+    log,
+  });
+  insertCreatureLogWork({log, creature, method});
+}
+
+export default doAction;

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

@@ -0,0 +1,56 @@
+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 roll from '/imports/parser/roll.js';
+
+const doCheck = new ValidatedMethod({
+  name: 'creature.doCheck',
+  validate: new SimpleSchema({
+    creatureId: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+      optional: true,
+    },
+    attributeName: {
+      type: String,
+      optional: true,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 10,
+    timeInterval: 5000,
+  },
+  run({creatureId, attributeName}) {
+    let creature = Creatures.findOne(creatureId);
+    assertEditPermission(creature, this.userId);
+    let bonus = getAttributeValue({creature, attributeName})
+		return doCheckWork({bonus});
+  },
+});
+
+function getAttributeValue({creature, attributeName}){
+  let att = creature.variables[attributeName];
+  if (!att) throw new Meteor.Error('No such attribute',
+    `This creature does not have a ${attributeName} property`);
+  let bonus = att.attributeType === 'ability'? att.modifier : att.value;
+  return bonus || 0;
+}
+
+export function doCheckWork({bonus, advantage = 0}){
+  let rolls = roll(2,20);
+  let chosenRoll;
+  if (advantage === 1){
+    chosenRoll = Math.max.apply(rolls);
+  } else if (advantage === -1){
+    chosenRoll = Math.min.apply(rolls);
+  } else {
+    chosenRoll = rolls[0];
+  }
+  let result = chosenRoll + bonus;
+  return {rolls, bonus, chosenRoll, result};
+}
+
+export default doCheck;

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

@@ -0,0 +1,93 @@
+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({prop, log}){
+  // Check Uses
+  if (prop.usesUsed >= prop.usesResult){
+    throw new Meteor.Error('Insufficient Uses',
+      'This prop has no uses left');
+  }
+  // Resources
+  if (prop.insufficientResources){
+    throw new Meteor.Error('Insufficient Resources',
+      'This creature doesn\'t have sufficient resources to perform this prop');
+  }
+  // Items
+  let itemQuantityAdjustments = [];
+  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 prop');
+    }
+    let item = CreatureProperties.findOne(itemConsumed.itemId);
+    if (!item || item.ancestors[0].id !== prop.ancestors[0].id){
+      throw new Meteor.Error('Ammo not found',
+        'The prop\'s ammo was not found on the creature');
+    }
+    if (!item.equipped){
+      throw new Meteor.Error('Ammo not equipped',
+        'The selected ammo is not equipped');
+    }
+    if (!itemConsumed.quantity) return;
+    itemQuantityAdjustments.push({
+      property: item,
+      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
+  if (prop.usesResult){
+    CreatureProperties.update(prop._id, {
+      $inc: {usesUsed: 1}
+    }, {
+      selector: prop
+    });
+    log.content.push({
+      name: 'Uses left',
+      result: prop.usesResult - (prop.usesUsed || 0) - 1,
+    });
+  }
+
+  // Damage stats
+  prop.resources.attributesConsumed.forEach(attConsumed => {
+    if (!attConsumed.quantity) return;
+    let stat = CreatureProperties.findOne(attConsumed.statId);
+    damagePropertyWork({
+      property: stat,
+      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',
+    description: gainLog.join('\n'),
+  });
+  if (spendLog.length) log.content.push({
+    name: 'Spent',
+    description: spendLog.join('\n'),
+  });
+}

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

@@ -0,0 +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';
+
+//TODO replace constants with their parsed node
+
+export default function evaluateString({string, scope, fn = 'compile', context}){
+  if (!context){
+    context = new CompilationContext({});
+  }
+  if (!string){
+    context.storeError('No string provided');
+    return {result: {value: string}, context};
+  }
+
+  if (!scope) context.storeError('No scope provided');
+
+  // Parse the string using mathjs
+  let node;
+  try {
+    node = parse(string);
+  } catch (e) {
+    context.storeError(e);
+    return {result: {value: string}, context};
+  }
+  node = replaceConstants({calc: node, context, scope});
+  let result = node[fn](scope, context);
+  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/engine/ComputationMemo.js

@@ -0,0 +1,307 @@
+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 = {};
+    this.propsById = {};
+    this.skillsByAbility = {};
+    this.unassignedEffects = [];
+    this.classLevelsById = {};
+    this.classes = {};
+    this.togglesById = {};
+    this.toggleIds = new Set();
+    // Equipped items that might be used as ammo
+    this.equipmentById = {};
+    // Properties that have calculations, but don't impact other properties
+    this.endStepPropsById = {};
+    // First note all the ids of all the toggles
+    props.forEach((prop) => {
+      if (
+        prop.type === 'toggle'
+      ) {
+        this.toggleIds.add(prop._id);
+      }
+    });
+    props.filter((prop) => {
+      if (
+        prop.type === 'toggle'
+      ) {
+        this.addToggle(prop);
+      } else {
+        return true;
+      }
+    }).filter((prop) => {
+      if (
+        prop.type === 'attribute' ||
+        prop.type === 'skill'
+      ) {
+        // Add all the stats
+        this.addStat(prop);
+      } else if (
+        prop.type === 'item'
+      ) {
+        this.addEquipment(prop);
+      } else {
+        return true;
+      }
+    }).forEach((prop) => {
+      // 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);
+      }
+    });
+    for (let name in creature.denormalizedStats){
+      if (!this.statsByVariableName[name]){
+        this.statsByVariableName[name] = {
+          variableName: name,
+          value: creature.denormalizedStats[name],
+          computationDetails: propDetailsByType.denormalizedStat(),
+        }
+      }
+    }
+  }
+  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)){
+        prop.computationDetails.toggleAncestors.push(ancestor.id);
+      }
+    });
+    return prop;
+  }
+  addToggle(prop){
+    prop = this.registerProperty(prop);
+    this.togglesById[prop._id] = prop;
+  }
+  addClassLevel(prop){
+    prop = this.registerProperty(prop);
+    this.classLevelsById[prop._id] = prop;
+  }
+  addStat(prop){
+    let variableName = prop.variableName;
+    if (!variableName) return;
+    let existingStat = this.statsByVariableName[variableName];
+    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,
+          dependencies: [],
+        });
+      }
+      if (prop.baseProficiency){
+        existingStat.computationDetails.proficiencies.push({
+          value: prop.baseProficiency,
+          stats: [variableName],
+          computationDetails: propDetailsByType.proficiency(),
+          type: 'proficiency',
+          statBase: true,
+          dependencies: [],
+        });
+      }
+    } else {
+      prop = this.registerProperty(prop);
+      this.statsById[prop._id] = prop;
+      this.statsByVariableName[variableName] = prop;
+      if (
+        prop.type === 'skill' &&
+        isSkillCheck(prop) &&
+        prop.ability
+      ){
+        this.addSkillToAbility(prop, prop.ability)
+      }
+    }
+  }
+  addSkillToAbility(prop, ability){
+    if (!this.skillsByAbility[ability]){
+      this.skillsByAbility[ability] = [];
+    }
+    this.skillsByAbility[ability].push(prop);
+  }
+  addEffect(prop){
+    prop = this.registerProperty(prop);
+    let targets = this.getEffectTargets(prop);
+    targets.forEach(target => {
+      if (target.computationDetails && target.computationDetails.effects){
+        target.computationDetails.effects.push(prop);
+      }
+    });
+    if (!targets.size){
+      this.unassignedEffects.push(prop);
+    }
+  }
+  getEffectTargets(prop){
+    let targets = new Set();
+    if (!prop.stats) return targets;
+    prop.stats.forEach((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)){
+        let extras = this.skillsByAbility[statName] || [];
+        extras.forEach(ex =>{
+          // Only pass on ability effects to skills and checks
+          if (ex.skillType === 'skill' || ex.skillType === 'check'){
+            targets.add(ex)
+          }
+        });
+      }
+    });
+    return targets;
+  }
+  addProficiency(prop){
+    prop = this.registerProperty(prop);
+    let targets = this.getProficiencyTargets(prop);
+    targets.forEach(target => {
+      target.computationDetails.proficiencies.push(prop);
+    });
+  }
+  getProficiencyTargets(prop){
+    let targets = new Set();
+    if (!prop.stats) return targets;
+    prop.stats.forEach(statName => {
+      let target = this.statsByVariableName[statName];
+      if (!target) return;
+      targets.add(target);
+      if (isAbility(target)) {
+        let extras = this.skillsByAbility[statName] || [];
+        extras.forEach(ex =>{
+          // Only pass on ability proficiencies to skills and checks
+          if (ex.skillType === 'skill' || ex.skillType === 'check'){
+            targets.add(ex)
+          }
+        });
+      }
+    });
+    return targets;
+  }
+  addEquipment(prop){
+    prop = this.registerProperty(prop);
+    this.equipmentById[prop._id] = prop;
+  }
+  addEndStepProp(prop){
+    prop = this.registerProperty(prop);
+    this.endStepPropsById[prop._id] = prop;
+  }
+}
+
+function isAbility(prop){
+  return prop.type === 'attribute' &&
+  prop.attributeType === 'ability'
+}
+
+function isSkillCheck(prop){
+  return includes(['skill', 'check', 'save', 'utility'], prop.skillType);
+}
+
+const skillOperations = [
+  'advantage',
+  'disadvantage',
+  'passiveAdd',
+  'fail',
+  'conditional',
+  'rollBonus',
+];
+
+function isSkillOperation(prop){
+  return skillOperations.includes(prop.operation);
+}
+
+function propDetails(prop){
+  return propDetailsByType[prop.type] && propDetailsByType[prop.type]() ||
+    propDetailsByType.default();
+}
+
+const propDetailsByType = {
+  default(){
+    return {
+      toggleAncestors: [],
+    };
+  },
+  toggle(){
+    return {
+      computed: false,
+      busyComputing: false,
+      toggleAncestors: [],
+    };
+  },
+  attribute(){
+    return {
+      computed: false,
+      busyComputing: false,
+      effects: [],
+      toggleAncestors: [],
+      idsOfSameName: [],
+    };
+  },
+  skill(){
+    return {
+      computed: false,
+      busyComputing: false,
+      effects: [],
+      proficiencies: [],
+      toggleAncestors: [],
+      idsOfSameName: [],
+    };
+  },
+  effect(){
+    return {
+      computed: false,
+      busyComputing: false,
+      toggleAncestors: [],
+    };
+  },
+  classLevel(){
+    return {
+      computed: true,
+      toggleAncestors: [],
+    };
+  },
+  proficiency(){
+    return {
+      toggleAncestors: [],
+    };
+  },
+  denormalizedStat(){
+    return {
+      toggleAncestors: [],
+    };
+  }
+}

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

@@ -0,0 +1,102 @@
+import evaluateCalculation from '/imports/api/creature/computation/engine/evaluateCalculation.js';
+import { union } from 'lodash';
+
+export default class EffectAggregator{
+  constructor(stat, memo){
+    delete this.baseValueErrors;
+    if (stat.baseValueCalculation){
+      let {
+        result,
+        context,
+        dependencies
+      } = evaluateCalculation({
+        string: stat.baseValueCalculation,
+        prop: stat,
+        memo
+      });
+      this.statBaseValue = +result.value;
+      stat.dependencies = union(
+        stat.dependencies,
+        dependencies,
+      );
+      if (context.errors.length){
+        this.baseValueErrors = context.errors;
+      }
+      this.base = this.statBaseValue;
+    } else {
+      this.base = 0;
+    }
+    this.add = 0;
+    this.mul = 1;
+    this.min = Number.NEGATIVE_INFINITY;
+    this.max = Number.POSITIVE_INFINITY;
+    this.advantage = 0;
+    this.disadvantage = 0;
+    this.passiveAdd = undefined;
+    this.fail = 0;
+    this.set = undefined;
+    this.conditional = [];
+    this.rollBonus = [];
+    this.hasNoEffects = true;
+  }
+  addEffect(effect){
+    let result = effect.result;
+    if (this.hasNoEffects) this.hasNoEffects = false;
+    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;
+          }
+        }
+        break;
+      case 'add':
+        // Add all adds together
+        this.add += result;
+        break;
+      case 'mul':
+        // Multiply the muls together
+        this.mul *= result;
+        break;
+      case 'min':
+        // Take the largest min value
+        this.min = result > this.min ? result : this.min;
+        break;
+      case 'max':
+        // Take the smallest max value
+        this.max = result < this.max ? result : this.max;
+        break;
+      case 'set':
+        // Take the highest set value
+        this.set = this.set === undefined || result > this.set ? result : this.set;
+        break;
+      case 'advantage':
+        // Sum number of advantages
+        this.advantage++;
+        break;
+      case 'disadvantage':
+        // Sum number of disadvantages
+        this.disadvantage++;
+        break;
+      case 'passiveAdd':
+        // Add all passive adds together
+        if (this.passiveAdd === undefined) this.passiveAdd = 0;
+        this.passiveAdd += result;
+        break;
+      case 'fail':
+        // Sum number of fails
+        this.fail++;
+        break;
+      case 'conditional':
+        // Store array of conditionals
+        this.conditional.push(result);
+        break;
+      case 'rollBonus':
+        // Store array of roll bonuses
+        this.rollBonus.push(result);
+        break;
+    }
+  }
+}

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

@@ -0,0 +1,183 @@
+import computeStat from '/imports/api/creature/computation/engine/computeStat.js';
+import applyToggles from '/imports/api/creature/computation/engine/applyToggles.js';
+import evaluateCalculation from '/imports/api/creature/computation/engine/evaluateCalculation.js';
+import { union } from 'lodash';
+
+export default function combineStat(stat, aggregator, memo){
+  if (stat.type === 'attribute'){
+    combineAttribute(stat, aggregator, memo);
+  } else if (stat.type === 'skill'){
+    combineSkill(stat, aggregator, memo);
+  } else if (stat.type === 'damageMultiplier'){
+    combineDamageMultiplier(stat, memo);
+  }
+}
+
+function getAggregatorResult(stat, aggregator){
+  let result = (aggregator.base + aggregator.add) * aggregator.mul;
+  if (result < aggregator.min) {
+    result = aggregator.min;
+  }
+  if (result > aggregator.max) {
+    result = aggregator.max;
+  }
+  if (aggregator.set !== undefined) {
+    result = aggregator.set;
+  }
+  if (!stat.decimal && Number.isFinite(result)){
+    result = Math.floor(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,
+      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
+}
+
+function combineSkill(stat, aggregator, memo){
+  // Skills are based on some ability Modifier
+  let ability = stat.ability && memo.statsByVariableName[stat.ability]
+  if (stat.ability && ability){
+    if (!ability.computationDetails.computed){
+      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;
+  for (let i in stat.computationDetails.proficiencies){
+    let prof = stat.computationDetails.proficiencies[i];
+    applyToggles(prof, memo);
+    if (
+      !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 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);
+    }
+  } else {
+    stat.dependencies = union(
+      stat.dependencies,
+      [profBonusStat._id],
+      profBonusStat.dependencies,
+    );
+  }
+  // Multiply the proficiency bonus by the actual proficiency
+  profBonus *= stat.proficiency;
+  // Base value
+  stat.baseValue = aggregator.statBaseValue;
+  stat.baseValueErrors = aggregator.baseValueErrors;
+  // Combine everything to get the final result
+  let result = (aggregator.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) {
+    result = aggregator.set;
+  }
+  if (Number.isFinite(result)){
+    result = Math.floor(result);
+  }
+  stat.value = result;
+  // Advantage/disadvantage
+  if (aggregator.advantage && !aggregator.disadvantage){
+    stat.advantage = 1;
+  } else if (aggregator.disadvantage && !aggregator.advantage){
+    stat.advantage = -1;
+  } else {
+    stat.advantage = 0;
+  }
+  // Passive bonus
+  stat.passiveBonus = aggregator.passiveAdd;
+  // conditional benefits
+  stat.conditionalBenefits = aggregator.conditional;
+  // Roll bonuses
+  stat.rollBonus = aggregator.rollBonus;
+  // Forced to fail
+  stat.fail = aggregator.fail;
+  // Rollbonus
+  stat.rollBonuses = aggregator.rollBonus;
+  // Hide
+  stat.hide = aggregator.hasNoEffects &&
+    stat.baseValue === undefined &&
+    stat.proficiency == 0 ||
+    undefined;
+}
+
+function combineDamageMultiplier(stat){
+  if (stat.immunityCount) return 0;
+  let result;
+  if (stat.ressistanceCount && !stat.vulnerabilityCount){
+    result = 0.5;
+  }  else if (!stat.ressistanceCount && stat.vulnerabilityCount){
+    result = 2;
+  } else {
+    result = 1;
+  }
+  stat.value = result;
+}

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

@@ -0,0 +1,55 @@
+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;
+  if (effect.computationDetails.busyComputing){
+    // Trying to compute this effect again while it is already computing.
+    // We must be in a dependency loop.
+    effect.computationDetails.computed = true;
+    effect.result = NaN;
+    effect.computationDetails.busyComputing = false;
+    effect.computationDetails.error = 'dependencyLoop';
+    if (Meteor.isClient) console.warn('dependencyLoop', effect);
+    return;
+  }
+  // Before doing any work, mark this effect as busy
+  effect.computationDetails.busyComputing = true;
+
+  // Apply any toggles
+  applyToggles(effect, memo);
+
+  // Determine result of effect calculation
+  delete effect.errors;
+  if (!effect.calculation){
+    if(effect.operation === 'add' || effect.operation === 'base'){
+      effect.result = 0;
+    } else {
+      delete effect.result
+    }
+  } else if (Number.isFinite(+effect.calculation)){
+    effect.result = +effect.calculation;
+  } else if(effect.operation === 'conditional' || effect.operation === 'rollBonus'){
+    effect.result = effect.calculation;
+  } else if(_.contains(['advantage', 'disadvantage', 'fail'], effect.operation)){
+    effect.result = 1;
+  } else {
+    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;
+    }
+  }
+  effect.computationDetails.computed = true;
+  effect.computationDetails.busyComputing = false;
+}

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

@@ -0,0 +1,66 @@
+import { forOwn, has, union } from 'lodash';
+import applyToggles from '/imports/api/creature/computation/engine/applyToggles.js';
+
+export default function computeLevels(memo){
+  computeClassLevels(memo);
+  computeTotalLevel(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){
+      memo.statsByVariableName[name] = classLevel;
+      memo.classes[name] = classLevel;
+    } else if (!has(stat, 'level')){
+      // Stat is overriden by an attribute
+      return;
+    } else if (stat.level < classLevel.level) {
+      memo.statsByVariableName[name] = classLevel;
+      memo.classes[name] = classLevel;
+    }
+  });
+}
+
+function computeTotalLevel(memo){
+  let currentLevel = memo.statsByVariableName['level'];
+  if (!currentLevel || currentLevel.deactivatedByToggle){
+    currentLevel = {
+      value: 0,
+      dependencies: [],
+      computationDetails: {
+        builtIn: true,
+        computed: true,
+      }
+    };
+    memo.statsByVariableName['level'] = currentLevel;
+  }
+  // bail out if overriden by an attribute
+  if (!currentLevel.computationDetails.builtIn) return;
+  let level = 0;
+  for (let name in memo.classes){
+    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,
+      )
+    }
+  }
+  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 all constants that could be used
+  forOwn(memo.constantsById, constant => {
+    computeConstant (constant, 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);
+  });
+  // Compute inline calculations
+  forOwn(memo.propsById, prop => {
+    computeInlineCalculations(prop, memo);
+  });
+}

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

@@ -0,0 +1,47 @@
+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 applyToggles from '/imports/api/creature/computation/engine/applyToggles.js';
+import { each, union } 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);
+
+  // Compute and aggregate all the effects
+  let aggregator = new EffectAggregator(stat, memo)
+  each(stat.computationDetails.effects, (effect) => {
+    computeEffect(effect, memo);
+    if (effect.deactivatedByToggle) return;
+    if (effect._id){
+      stat.dependencies = union(
+        stat.dependencies,
+        [effect._id]
+      );
+    }
+    stat.dependencies = union(
+      stat.dependencies,
+      effect.dependencies
+    )
+    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/computeToggle.js

@@ -0,0 +1,55 @@
+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;
+  if (toggle.computationDetails.busyComputing){
+    // Trying to compute this effect again while it is already computing.
+    // We must be in a dependency loop.
+    toggle.computationDetails.computed = true;
+    toggle.result = false;
+    toggle.computationDetails.busyComputing = false;
+    toggle.computationDetails.error = 'dependencyLoop';
+    if (Meteor.isClient) console.warn('dependencyLoop', toggle);
+    return;
+  }
+  // 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){
+    toggle.toggleResult = true;
+  } else if (toggle.disabled){
+    toggle.toggleResult = false;
+  } else if (!toggle.condition){
+    toggle.toggleResult = false;
+  } else if (Number.isFinite(+toggle.condition)){
+    toggle.toggleResult = !!+toggle.condition;
+  } else {
+    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 +1,125 @@
+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 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];
+      let keys = [
+        'dependencies',
+        'inactive',
+        'deactivatedBySelf',
+        'deactivatedByAncestor',
+        'deactivatedByToggle',
+        ...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.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/methods/recomputeCreature.js

@@ -0,0 +1,120 @@
+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/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 recomputeSlotFullness from '/imports/api/creature/denormalise/recomputeSlotFullness.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.js';
+import recomputeInactiveProperties from '/imports/api/creature/denormalise/recomputeInactiveProperties.js';
+
+export const recomputeCreature = new ValidatedMethod({
+
+  name: 'creatures.recomputeCreature',
+
+  validate: new SimpleSchema({
+    charId: { type: String }
+  }).validator(),
+
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+
+  run({charId}) {
+    let creature = Creatures.findOne(charId);
+    // Permission
+    assertEditPermission(creature, this.userId);
+    // Work, call this direcly if you are already in a method that has checked
+    // for permission to edit a given character
+    recomputeCreatureById(charId);
+  },
+
+});
+
+export function recomputeCreatureById(creatureId){
+  let creature = Creatures.findOne(creatureId);
+  recomputeCreatureByDoc(creature);
+}
+
+/**
+ * This function is the heart of DiceCloud. It recomputes a creature's stats,
+ * distilling down effects and proficiencies into the final stats that make up
+ * a creature.
+ *
+ * Essentially this is a depth first tree traversal algorithm that computes
+ * stats' dependencies before computing stats themselves, while detecting
+ * dependency loops.
+ *
+ * At the moment it makes no effort to limit recomputation to just what was
+ * changed.
+ *
+ * Attempting to implement dependency management to limit recomputation to just
+ * change affected stats should only happen as a last resort, when this function
+ * can no longer be performed more efficiently, and server resources can not be
+ * expanded to meet demand.
+ *
+ * A brief overview:
+ * - Fetch the stats of the creature and add them to
+ *   an object for quick lookup
+ * - Fetch the effects and proficiencies which apply to each stat and store them with the stat
+ * - Fetch the class levels and store them as well
+ * - Mark each stat and effect as uncomputed
+ * - Iterate over each stat in order and compute it
+ *   - If the stat is already computed, skip it
+ *   - If the stat is busy being computed, we are in a dependency loop, make it NaN and mark computed
+ *   - Mark the stat as busy computing
+ *   - Iterate over each effect which applies to the attribute
+ *     - If the effect is not computed compute it
+ *       - If the effect relies on another attribute, get its computed value
+ *       - Recurse if that attribute is uncomputed
+ *     - apply the effect to the attribute
+ *   - Conglomerate all the effects to compute the final stat values
+ *   - Mark the stat as computed
+ * - Write the computed results back to the database
+ */
+export function recomputeCreatureByDoc(creature){
+  const creatureId = creature._id;
+  let props = getComputationProperties(creatureId);
+  let computationMemo = new ComputationMemo(props, creature);
+  computeMemo(computationMemo);
+  writeAlteredProperties(computationMemo);
+  writeCreatureVariables(computationMemo, creatureId);
+  recomputeDamageMultipliersById(creatureId);
+  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/creatureComputation.test.js

@@ -0,0 +1,97 @@
+import {computeCreature} from "./recomputeCreature.js";
+import assert from "assert";
+
+const makeEffect = function(operation, value){
+  let effect = {computed: false, result: 0, operation}
+  if (_.isFinite(value)){
+    effect.value = +value;
+  } else {
+    effect.calculation = value;
+  }
+  return effect;
+}
+
+describe('computeCreature', function () {
+  it('computes an aritrary creature', function () {
+    let char = {
+      atts: {
+        attribute1: {
+          computed: false,
+          busyComputing: false,
+          type: "attribute",
+          attributeType: "ability",
+          result: 0,
+          mod: 0, // The resulting modifier if this is an ability
+          base: 0,
+          add: 0,
+          mul: 1,
+          min: Number.NEGATIVE_INFINITY,
+          max: Number.POSITIVE_INFINITY,
+          effects: [
+            makeEffect("base", 10),
+            makeEffect("add", 5),
+            makeEffect("mul", 2),
+          ],
+        },
+        attribute2: {
+          computed: false,
+          busyComputing: false,
+          type: "attribute",
+          result: 0,
+          mod: 0, // The resulting modifier if this is an ability
+          base: 0,
+          add: 0,
+          mul: 1,
+          min: Number.NEGATIVE_INFINITY,
+          max: Number.POSITIVE_INFINITY,
+          effects: [
+            makeEffect("base", "attribute1"),
+            makeEffect("max", 2),
+          ],
+        },
+      },
+      skills: {
+        skill1: {
+          computed: false,
+          busyComputing: false,
+          type: "skill",
+          ability: "attribute1",
+          result: 0,
+          proficiency: 0,
+          add: 0,
+          mul: 1,
+          min: Number.NEGATIVE_INFINITY,
+          max: Number.POSITIVE_INFINITY,
+          advantage: 0,
+          disadvantage: 0,
+          passiveAdd: 0,
+          fail: 0,
+          conditional: 0,
+          effects: [],
+          proficiencies: [],
+        },
+      },
+      dms: {
+        dm1: {
+          computed: false,
+          busyComputing: false,
+          type: "damageMultiplier",
+          result: 0,
+          immunityCount: 0,
+          ressistanceCount: 0,
+          vulnerabilityCount: 0,
+          effects: [],
+        }
+      },
+      classes: {
+        Barbarian: {
+          level: 5,
+        },
+      },
+      level: 5,
+    };
+    char = computeCreature(char);
+    console.log(char);
+    assert(true);
+  });
+});

app/imports/api/creature/creaturePermissions.js

@@ -0,0 +1,29 @@
+import Creatures from '/imports/api/creature/Creatures.js';
+import {
+  assertEditPermission as editPermission,
+  assertViewPermission as viewPermission,
+  assertOwnership as ownership
+} from '/imports/api/sharing/sharingPermissions.js';
+
+function getCreature(creature, fields){
+  if (typeof creature === 'string'){
+    return Creatures.findOne(creature, {fields});
+  } else {
+    return creature;
+  }
+}
+
+export function assertOwnership(creature, userId){
+  creature = getCreature(creature, {owner: 1});
+  ownership(creature, userId);
+}
+
+export function assertEditPermission(creature, userId) {
+  creature = getCreature(creature, {owner: 1, writers: 1});
+  editPermission(creature, userId);
+}
+
+export function assertViewPermission(creature, userId) {
+  creature = getCreature(creature, {owner: 1, readers:1, writers: 1, public: 1});
+  viewPermission(creature, userId);
+}

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

@@ -0,0 +1,91 @@
+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';
+
+let CreatureProperties = new Mongo.Collection('creatureProperties');
+
+let CreaturePropertySchema = new SimpleSchema({
+	type: {
+    type: String,
+    allowedValues: Object.keys(propertySchemasIndex),
+  },
+	tags: {
+		type: Array,
+		defaultValue: [],
+	},
+	'tags.$': {
+		type: String,
+	},
+	disabled: {
+		type: Boolean,
+		optional: true,
+	},
+  icon: {
+    type: storedIconsSchema,
+    optional: true,
+  },
+  // Denormalised flag if this property is inactive on the sheet for any reason
+  // Including being disabled, or a decendent of a disabled property
+  inactive: {
+    type: Boolean,
+    optional: true,
+    index: 1,
+  },
+  // Denormalised flag if this property was made inactive by an inactive
+  // ancestor. True if this property has an inactive ancestor even if this
+  // property is itself inactive
+  deactivatedByAncestor: {
+    type: Boolean,
+    optional: true,
+    index: 1,
+  },
+  // Denormalised flag if this property was made inactive because of its own
+  // state
+  deactivatedBySelf: {
+    type: Boolean,
+    optional: true,
+    index: 1,
+  },
+  // Denormalised flag if this property was made inactive because of a toggle
+  // calculation. Either an ancestor toggle calculation or its own.
+  deactivatedByToggle: {
+    type: Boolean,
+    optional: true,
+    index: 1,
+  },
+  // Denormalised list of all properties or creatures this property depends on
+  dependencies: {
+    type: Array,
+    defaultValue: [],
+    index: 1,
+  },
+  'dependencies.$': {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+  },
+});
+
+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/getRootCreatureAncestor.js

@@ -0,0 +1,5 @@
+import Creatures from '/imports/api/creature/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.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.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 +1,33 @@
+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 getRootCreatureAncestor from '/imports/api/creature/creatureProperties/getRootCreatureAncestor.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import { insertPropertyWork } from '/imports/api/creature/creatureProperties/methods/insertProperty.js';
+
+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);
+    let rootCreature = getRootCreatureAncestor(creatureProperty);
+    assertEditPermission(rootCreature, this.userId);
+    insertPropertyWork({
+      property: creatureProperty,
+      creature: rootCreature,
+    });
+  },
+});
+
+export default duplicateProperty;

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

@@ -0,0 +1,72 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+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 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 INVENTORY_TAGS from '/imports/constants/INVENTORY_TAGS.js';
+
+export 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'};
+  }
+}
+
+// Equipping or unequipping an item will also change its parent
+const equipItem = new ValidatedMethod({
+  name: 'creatureProperties.equip',
+  validate({_id, equipped}){
+		if (!_id) throw new Meteor.Error('No _id', '_id is required');
+    if (equipped !== true && equipped !== false) {
+      throw new Meteor.Error('No equipped', 'equipped is required to be true or false');
+    }
+  },
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id, equipped}) {
+    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 = getRootCreatureAncestor(item);
+    assertEditPermission(creature, this.userId);
+    CreatureProperties.update(_id, {
+      $set: {equipped},
+    }, {
+			selector: {type: 'item'},
+		});
+    let tag = equipped ? INVENTORY_TAGS.equipment : INVENTORY_TAGS.carried;
+    let parentRef = getParentRefByTag(creature._id, tag);
+
+    organizeDoc.call({
+      docRef: {
+        id: _id,
+        collection: 'creatureProperties',
+      },
+      parentRef,
+      order: Number.MAX_SAFE_INTEGER,
+      skipRecompute: true,
+    });
+
+    recomputeInactiveProperties(creature._id);
+    recomputeInventory(creature._id);
+    recomputeCreatureByDoc(creature);
+  },
+});
+
+export default equipItem;

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 +1,49 @@
+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 { 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';
+
+const insertProperty = new ValidatedMethod({
+  name: 'creatureProperties.insert',
+	validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({creatureProperty}) {
+    let rootCreature = getRootCreatureAncestor(creatureProperty);
+    assertEditPermission(rootCreature, this.userId);
+		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;

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

@@ -0,0 +1,110 @@
+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';
+
+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
+    let rootCreature;
+		if (parentRef.collection === 'creatures'){
+      rootCreature = parentDoc;
+		} else if (parentRef.collection === 'creatureProperties'){
+      rootCreature = getRootCreatureAncestor(parentDoc);
+		} else {
+			throw `${parentRef.collection} is not a valid parent collection`
+		}
+    assertEditPermission(rootCreature, this.userId);
+
+		// Fetch the library node and its decendents, provided they have not been
+		// removed
+		let node = LibraryNodes.findOne({
+			_id: nodeId,
+			removed: {$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 first in the array of nodes
+    // It must get the first generated ID to prevent flickering
+		nodes = [node, ...nodes];
+
+		// 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
+    CreatureProperties.batchInsert(nodes);
+
+    // get the root inserted doc
+    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(rootId);
+    // 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;
+	},
+});
+
+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 +1,35 @@
+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 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);
+
+    // Do work
+		CreatureProperties.update(_id, {
+			$push: {[path.join('.')]: 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/denormalise/recomputeDamageMultipliers.js

@@ -0,0 +1,78 @@
+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 CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+
+export const recomputeDamageMultipliers = new ValidatedMethod({
+
+  name: 'creatures.recomputeDamageMultipliers',
+
+  validate: new SimpleSchema({
+    creatureId: { type: String }
+  }).validator(),
+
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+
+  run({creatureId}) {
+    // Permission
+    assertEditPermission(creatureId, this.userId);
+    // Work, call this direcly if you are already in a method that has checked
+    // for permission to edit a given character
+    recomputeDamageMultipliersById(creatureId);
+  },
+
+});
+
+export function recomputeDamageMultipliersById(creatureId){
+  if (!creatureId) throw 'Creature ID is required';
+  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
+  let multipliersByName = {};
+  props.forEach(dm => {
+    dm.damageTypes.forEach(damageType => {
+      if (!multipliersByName[damageType]){
+        multipliersByName[damageType] = {
+          weaknesses: 0,
+          resistances: 0,
+          immunities: 0,
+        };
+      }
+      if (dm.value === 0){
+        multipliersByName[damageType].immunities++;
+      } else if (dm.value === 0.5){
+        multipliersByName[damageType].resistances++;
+      } else if (dm.value === 2){
+        multipliersByName[damageType].weaknesses++;
+      }
+    });
+  });
+  // Make an Object with keys of all the damage types that have a resulting
+  // immunity, weakness, or resistance
+  let damageMultipliers = {};
+  for (let damageType in multipliersByName){
+    let multiplier = multipliersByName[damageType];
+    if (multiplier.immunities){
+      damageMultipliers[damageType] = 0;
+    } else if (multiplier.resistances && !multiplier.weaknesses){
+      damageMultipliers[damageType] = 0.5;
+    } else if (multiplier.weaknesses && !multiplier.resistances){
+      damageMultipliers[damageType] = 2;
+    }
+  }
+  // Store the Object on the creature document
+  Creatures.update(creatureId, {$set: {damageMultipliers}});
+}

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

@@ -0,0 +1,75 @@
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+
+export default function recomputeInactiveProperties(ancestorId){
+  let disabledFilter = {
+    'ancestors.id': ancestorId,
+    $or: [
+      {disabled: true}, // Everything can be disabled
+      {type: 'buff', applied: false}, // Buffs can be applied
+      {type: 'item', equipped: {$ne: true}},
+      {type: 'spell', prepared: {$ne: true}, alwaysPrepared: {$ne: true}},
+    ],
+  };
+  let disabledIds = CreatureProperties.find(disabledFilter, {
+    fields: {_id: 1},
+  }).map(prop => prop._id);
+
+  // Deactivate relevant properties
+  // Inactive properties
+  CreatureProperties.update({
+    'ancestors.id': ancestorId,
+    '_id': {$in: disabledIds},
+    $or: [
+      {inactive: {$ne: true}},
+      {deactivatedBySelf: {$ne: true}},
+      {deactivatedByAncestor: true},
+    ],
+  }, {
+    $set: {
+      inactive: true,
+      deactivatedBySelf: true,
+    },
+    $unset: {deactivatedByAncestor: 1},
+  }, {
+    multi: true,
+    selector: {type: 'any'},
+  });
+  // Decendants of inactive properties
+  CreatureProperties.update({
+    'ancestors.id': {$eq: ancestorId, $in: disabledIds},
+    $or: [
+      {inactive: {$ne: true}},
+      {deactivatedByAncestor: {$ne: true}},
+    ],
+  }, {
+    $set: {
+      inactive: true,
+      deactivatedByAncestor: true,
+    },
+  }, {
+    multi: true,
+    selector: {type: 'any'},
+  });
+
+  // Remove inactive from all the properties that are inactive but shouldn't be
+  CreatureProperties.update({
+    'ancestors.id': {$eq: ancestorId, $nin: disabledIds},
+    '_id': {$nin: disabledIds},
+    // 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,
+    selector: {type: 'any'},
+  });
+}

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.js';
+import { nodesToTree } from '/imports/api/parenting/parenting.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);
+  }
+}

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

@@ -0,0 +1,43 @@
+import CreatureProperties from '/imports/api/creature/creatureProperties/CreatureProperties.js';
+// n + 1 database queries + n potential updates for n slots. Could be sped up.
+export default function recomputeSlotFullness(ancestorId){
+  CreatureProperties.find({
+    'ancestors.id': ancestorId,
+    type: 'propertySlot',
+  }).forEach(slot => {
+    let children = CreatureProperties.find({
+      'parent.id': slot._id,
+      removed: {$ne: true},
+    }, {
+      fields: {
+        slotQuantityFilled: 1,
+        type: 1
+      }
+    }).fetch();
+    let totalFilled = 0;
+    children.forEach(child => {
+      if (child.type === 'slotFiller'){
+        totalFilled += child.slotQuantityFilled;
+      } else {
+        totalFilled++;
+      }
+    });
+    let spaceLeft;
+    let expected = slot.quantityExpectedResult;
+    if (typeof expected !== 'number'){
+      expected = 1;
+    }
+    if (expected === 0){
+      spaceLeft = null;
+    } else {
+      spaceLeft = expected - totalFilled;
+    }
+    if (slot.totalFilled !== totalFilled || slot.spaceLeft !== spaceLeft){
+      CreatureProperties.update(slot._id, {
+        $set: {totalFilled, spaceLeft},
+      }, {
+        selector: {type: 'propertySlot'}
+      });
+    }
+  });
+}

app/imports/api/creature/experience/Experiences.js

@@ -0,0 +1,197 @@
+import SimpleSchema from 'simpl-schema';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import { getUserTier } from '/imports/api/users/patreon/tiers.js';
+import { assertEditPermission } from '/imports/api/creature/creaturePermissions.js';
+import Creatures from '/imports/api/creature/Creatures.js';
+import { recomputeCreatureById } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+
+let Experiences = new Mongo.Collection('experiences');
+
+let ExperienceSchema = new SimpleSchema({
+	name: {
+		type: String,
+		optional: true,
+	},
+	// The amount of XP this experience gives
+	xp: {
+		type: SimpleSchema.Integer,
+		optional: true,
+    min: 0,
+	},
+  // Setting levels instead of value grants whole levels
+  levels: {
+    type: SimpleSchema.Integer,
+    optional: true,
+    min: 0,
+    index: 1,
+  },
+	// The real-world date that it occured, usually sorted by date
+	date: {
+		type: Date,
+		autoValue: function() {
+			// If the date isn't set, set it to now
+			if (!this.isSet) {
+				return new Date();
+			}
+		},
+    index: 1,
+	},
+  creatureId: {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+    index: 1,
+  },
+});
+
+Experiences.attachSchema(ExperienceSchema);
+
+const insertExperienceForCreature = function({experience, creatureId, userId}){
+  assertEditPermission(creatureId, userId);
+  if (experience.xp){
+    Creatures.update(creatureId, {$inc: {
+      'denormalizedStats.xp': experience.xp
+    }});
+  }
+  if (experience.levels) {
+    Creatures.update(creatureId, {$inc: {
+      'denormalizedStats.milestoneLevels': experience.levels
+    }});
+  }
+  experience.creatureId = creatureId;
+  let id = Experiences.insert(experience);
+  recomputeCreatureById(creatureId);
+  return id;
+};
+
+const insertExperience = new ValidatedMethod({
+  name: 'experiences.insert',
+  validate: new SimpleSchema({
+    experience: {
+      type: ExperienceSchema.omit('creatureId'),
+    },
+    creatureIds: {
+      type: Array,
+      max: 12,
+    },
+    'creatureIds.$': {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({experience, creatureIds}) {
+    let userId = this.userId;
+    if (!userId) {
+      throw new Meteor.Error('Experiences.methods.insert.denied',
+      'You need to be logged in to insert an experience');
+    }
+    let tier = getUserTier(this.userId);
+    if (!tier.paidBenefits){
+      throw new Meteor.Error('Experiences.methods.insert.denied',
+      `The ${tier.name} tier does not allow you to grant experience`);
+    }
+    let insertedIds = [];
+    creatureIds.forEach(creatureId => {
+      let id = insertExperienceForCreature({experience, creatureId, userId});
+      insertedIds.push(id);
+    });
+    return insertedIds;
+  },
+});
+
+const removeExperience = new ValidatedMethod({
+  name: 'experiences.remove',
+  validate: new SimpleSchema({
+    experienceId: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({experienceId}) {
+    let userId = this.userId;
+    if (!userId) {
+      throw new Meteor.Error('Experiences.methods.remove.denied',
+      'You need to be logged in to remove an experience');
+    }
+    let tier = getUserTier(this.userId);
+    if (!tier.paidBenefits){
+      throw new Meteor.Error('Experiences.methods.remove.denied',
+      `The ${tier.name} tier does not allow you to remove  an experience`);
+    }
+    let experience = Experiences.findOne(experienceId);
+    if (!experience) return;
+    let creatureId = experience.creatureId
+    assertEditPermission(creatureId, userId);
+    if (experience.xp){
+      Creatures.update(creatureId, {$inc: {
+        'denormalizedStats.xp': -experience.xp
+      }});
+    }
+    if (experience.levels) {
+      Creatures.update(creatureId, {$inc: {
+        'denormalizedStats.milestoneLevels': -experience.levels
+      }});
+    }
+    experience.creatureId = creatureId;
+    let numRemoved = Experiences.remove(experienceId);
+    recomputeCreatureById(creatureId);
+    return numRemoved;
+  },
+});
+
+const recomputeExperiences = new ValidatedMethod({
+  name: 'experiences.recompute',
+  validate: new SimpleSchema({
+    creatureId: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({creatureId}) {
+    let userId = this.userId;
+    if (!userId) {
+      throw new Meteor.Error('Experiences.methods.recompute.denied',
+      'You need to be logged in to recompute a creature\'s experiences');
+    }
+    let tier = getUserTier(this.userId);
+    if (!tier.paidBenefits){
+      throw new Meteor.Error('Experiences.methods.recompute.denied',
+      `The ${tier.name} tier does not allow you to recompute a creature's experiences`);
+    }
+    assertEditPermission(creatureId, userId);
+
+    let xp = 0;
+    let milestoneLevels = 0;
+    Experiences.find({
+      creatureId
+    }, {
+      fields: {xp: 1, levels: 1}
+    }).forEach(experience => {
+      xp += experience.xp || 0;
+      milestoneLevels += experience.levels || 0;
+    });
+    Creatures.update(creatureId, {$set: {
+      'denormalizedStats.xp': xp,
+      'denormalizedStats.milestoneLevels': milestoneLevels
+    }});
+    recomputeCreatureById(creatureId);
+  },
+});
+
+export default Experiences;
+export { ExperienceSchema, insertExperience, removeExperience, recomputeExperiences };

app/imports/api/creature/journal/JournalEntry.js

@@ -0,0 +1,44 @@
+import SimpleSchema from 'simpl-schema';
+
+let ExperienceSchema = new SimpleSchema({
+	title: {
+		type: String,
+		optional: true,
+	},
+	// Potentially long description of the event
+	description: {
+		type: String,
+		optional: true,
+	},
+	// The real-world date that it occured
+	date: {
+		type: Date,
+		autoValue: function() {
+			// If the date isn't set, set it to now
+			if (!this.isSet) {
+				return new Date();
+			}
+		},
+	},
+	// The date in-world of this event
+	worldDate: {
+		type: String,
+		optional: true,
+	},
+  // Tags to better find this entry later
+  tags: {
+    type: Array,
+    defaultValue: [],
+  },
+  'tags.$': {
+    type: String,
+  },
+  // ID of the journal this entry belongs to
+  journalId: {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+    index: 1,
+  }
+});
+
+export { ExperienceSchema };

app/imports/api/creature/log/CreatureLogs.js

@@ -0,0 +1,231 @@
+import SimpleSchema from 'simpl-schema';
+import Creatures from '/imports/api/creature/Creatures.js';
+import LogContentSchema from '/imports/api/creature/log/LogContentSchema.js';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import {assertEditPermission} from '/imports/api/creature/creaturePermissions.js';
+import {
+  parse,
+  CompilationContext,
+  prettifyParseError
+} from '/imports/parser/parser.js';
+const PER_CREATURE_LOG_LIMIT = 100;
+
+if (Meteor.isServer){
+  var sendWebhookAsCreature = require('/imports/server/discord/sendWebhook.js').sendWebhookAsCreature;
+}
+
+let CreatureLogs = new Mongo.Collection('creatureLogs');
+
+let CreatureLogSchema = new SimpleSchema({
+  content: {
+    type: Array,
+    defaultValue: [],
+    maxCount: 25,
+  },
+  'content.$': {
+    type: LogContentSchema,
+  },
+	// The real-world date that it occured, usually sorted by date
+	date: {
+		type: Date,
+		autoValue: function() {
+			// If the date isn't set, set it to now
+			if (!this.isSet) {
+				return new Date();
+			}
+		},
+    index: 1,
+	},
+  creatureId: {
+    type: String,
+    regEx: SimpleSchema.RegEx.Id,
+    index: 1,
+  },
+  creatureName: {
+    type: String,
+    optional: true,
+  },
+});
+
+CreatureLogs.attachSchema(CreatureLogSchema);
+
+function removeOldLogs(creatureId){
+  // Find the first log that is over the limit
+  let firstExpiredLog = CreatureLogs.find({
+    creatureId
+  }, {
+    sort: {date: -1},
+    skip: PER_CREATURE_LOG_LIMIT,
+  });
+  // Remove all logs older than the one over the limit
+  CreatureLogs.remove({
+    creatureId,
+    date: {$lte: firstExpiredLog.date},
+  });
+}
+
+function logToMessageData(log){
+  let embed = {
+    fields: [],
+  };
+  log.content.forEach(c => {
+    let field = {};
+    let descriptionField = {};
+    if (c.name) field.name = c.name;
+    let valueArray = [];
+    if (c.error) valueArray.push(`*${c.error}*`);
+    if (c.resultPrefix) valueArray.push(`${c.resultPrefix}`);
+    if (c.result) valueArray.push(`\`${c.result}\``);
+    if (c.details) valueArray.push(c.details);
+    if (valueArray.length) field.value = valueArray.join(' ');
+    if (c.description){
+      if (!field.value){
+        field.value = c.description;
+      } else {
+        descriptionField.value = c.description;
+      }
+    }
+    if (field.name || field.value){
+      if (!field.name) field.name = '\u200b';
+      if (!field.value) field.value = '\u200b';
+      embed.fields.push(field);
+    }
+    if (descriptionField.value){
+      descriptionField.name = '\u200b';
+      embed.fields.push(descriptionField);
+    }
+  });
+  return { embeds: [embed] };
+}
+
+function logWebhook({log, creature}){
+  if (Meteor.isServer){
+    sendWebhookAsCreature({
+      creature,
+      data: logToMessageData(log),
+    });
+  }
+}
+
+const insertCreatureLog = new ValidatedMethod({
+  name: 'creatureLogs.methods.insertCreatureLog',
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+	validate: new SimpleSchema({
+		log: CreatureLogSchema.omit('date'),
+	}).validator(),
+  run({log}){
+    const creatureId = log.creatureId;
+    const creature = Creatures.findOne(creatureId, {fields: {
+      readers: 1,
+      writers: 1,
+      owner: 1,
+      'settings.discordWebhook': 1,
+      name: 1,
+      avatarPicture: 1,
+    }});
+    assertEditPermission(creature, this.userId);
+    // Build the new log
+    let id = insertCreatureLogWork({log, creature, method: this})
+    return id;
+  },
+});
+
+export function insertCreatureLogWork({log, creature, method}){
+  // Build the new log
+  if (typeof log === 'string'){
+    log = {text: log};
+  }
+  log.date = new Date();
+  // Insert it
+  let id = CreatureLogs.insert(log);
+  if (Meteor.isServer){
+    method.unblock();
+    removeOldLogs(creature._id);
+    logWebhook({log, creature});
+  }
+  return id;
+}
+
+
+function equalIgnoringWhitespace(a, b){
+  if (typeof a !== 'string' || typeof b !== 'string') return a === b;
+  return a.replace(/\s/g,'') === b.replace(/\s/g, '');
+}
+
+const logRoll = new ValidatedMethod({
+  name: 'creatureLogs.methods.logForCreature',
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+	validate: new SimpleSchema({
+		roll: {
+			type: String,
+		},
+		creatureId: {
+			type: String,
+			regEx: SimpleSchema.RegEx.Id,
+		},
+	}).validator(),
+  run({roll, creatureId}){
+    const creature = Creatures.findOne(creatureId, {fields: {
+      variables: 1,
+      readers: 1,
+      writers: 1,
+      owner: 1,
+      'settings.discordWebhook': 1,
+      name: 1,
+      avatarPicture: 1,
+    }});
+    assertEditPermission(creature, this.userId);
+    let logContent = []
+    let parsedResult = undefined;
+    try {
+      parsedResult = parse(roll);
+    } catch (e){
+      let error = prettifyParseError(e);
+      logContent.push({error});
+    }
+    if (parsedResult) try {
+      let rollContext = new CompilationContext();
+      let compiled = parsedResult.compile(creature.variables, rollContext);
+      let compiledString = compiled.toString();
+      if (!equalIgnoringWhitespace(compiledString, roll)) logContent.push({
+        details: roll
+      });
+      logContent.push({
+        details: compiledString
+      });
+      let rolled = compiled.roll(creature.variables, rollContext);
+      let rolledString = rolled.toString();
+      if (rolledString !== compiledString) logContent.push({
+        result: rolled.toString()
+      });
+      let result = rolled.reduce(creature.variables, rollContext);
+      let resultString = result.toString();
+      if (resultString !== rolledString) logContent.push({
+        result: resultString
+      });
+    } catch (e){
+      logContent = [{error: 'Calculation error'}];
+    }
+    const log = {
+      content: logContent,
+      creatureId,
+      date: new Date(),
+    };
+
+    let id = insertCreatureLogWork({log, creature, method: this});
+
+    return id;
+  },
+});
+
+export default CreatureLogs;
+export { CreatureLogSchema, insertCreatureLog, logRoll};

app/imports/api/creature/log/LogContentSchema.js

@@ -0,0 +1,58 @@
+import SimpleSchema from 'simpl-schema';
+import ErrorSchema from '/imports/api/properties/subSchemas/ErrorSchema.js';
+import RollDetailsSchema from '/imports/api/properties/subSchemas/RollDetailsSchema.js';
+
+let LogContentSchema = new SimpleSchema({
+  name: {
+    type: String,
+    optional: true,
+  },
+  error: {
+    type: String,
+    optional: true,
+  },
+  resultPrefix: {
+    type: String,
+    optional: true,
+  },
+  result: {
+    type: String,
+    optional: true,
+  },
+  expandedResult: {
+    type: String,
+    optional: true,
+  },
+  details: {
+    type: String,
+    optional: true,
+  },
+  description: {
+    type: String,
+    optional: true,
+  },
+  context: {
+    type: Object,
+    optional: true,
+  },
+  'context.errors':{
+    type: Array,
+    defaultValue: [],
+  },
+  'context.errors.$': {
+    type: ErrorSchema,
+  },
+  'context.rolls': {
+    type: Array,
+    defaultValue: [],
+  },
+  'context.rolls.$': {
+    type: RollDetailsSchema,
+  },
+  'context.doubleRolls': {
+    type: Boolean,
+    optional: true,
+  },
+});
+
+export default LogContentSchema;

app/imports/api/creature/mixins/creaturePermissionMixin.js

@@ -0,0 +1,52 @@
+import {
+  assertEditPermission,
+  assertViewPermission,
+  assertOwnership,
+} from '/imports/api/creature/creaturePermissions.js';
+
+// Checks if the method has permission to run on the document. If the document
+// has a charId, that creature is checked, otherwise if it has an _id and the
+// collection is defined in the method options, that document is fetched to
+// determine its charId, otherwise a getCharId method can be defined to perform
+// a special search for the required creature
+//
+// Because this mixin injects the charId into argument objects that don't
+// already contain it, it should always come last in the mixin list, so that it
+// the outermost wrapper of the run function
+export default function creaturePermissionMixin(methodOptions){
+  let assertPermission;
+  if (methodOptions.permission === 'owner'){
+    assertPermission = assertOwnership;
+  } else if (methodOptions.permission === 'edit'){
+    assertPermission = assertEditPermission;
+  } else if (methodOptions.permission === 'view'){
+    assertPermission = assertViewPermission;
+  } else {
+    throw "`permission` missing in method options";
+  }
+
+  let getCharId;
+  if (methodOptions.getCharId){
+    getCharId = methodOptions.getCharId;
+  } else if (methodOptions.collection) {
+    getCharId = function({_id}){
+      return methodOptions.collection.findOne(_id, {
+        fields: {charId: 1}
+      }).charId;
+    };
+  } else {
+    getCharId = function(){
+      throw "`getCharId` or `collection` missing in method options," +
+      " or {charId} missing in call";
+    };
+  }
+
+  let runFunc = methodOptions.run;
+  methodOptions.run = function(doc, ...rest){
+    // Store the charId on the doc for other mixins if it had to be fetched
+    doc.charId = doc.charId || getCharId.apply(this, arguments);
+    assertPermission(doc.charId, this.userId);
+    return runFunc.call(this, doc, ...rest);
+  };
+  return methodOptions;
+}

app/imports/api/creature/mixins/propagateInheritanceUpdateMixin.js

@@ -0,0 +1,59 @@
+import {
+  updateChildren,
+  updateDescendants,
+} from '/imports/api/parenting/parenting.js';
+import { inheritedFields } from '/imports/api/parenting/ChildSchema.js';
+import MONGO_OPERATORS from '/imports/constants/MONGO_OPERATORS.js';
+
+// This mixin can be safely applied to all update methods which are validated
+// with the updateSchemaMixin. It will propagate updates to fields which
+// are inherited and normalised on the parent or ancestor docs
+// It should have neglible performance impact for updates that aren't inherited
+function propagateInheritanceUpdate({_id, update}){
+  let childModifier = {};
+  let descendantModifier = {};
+  // For each operator
+  for (let operator of MONGO_OPERATORS){
+    // If the operator is in the update, for each field
+    if (update[operator]) for (let field in update[operator]){
+      // Get the top level field that was actually modified
+      const indexOfDot = field.indexOf('.');
+      let modifiedField;
+      if (indexOfDot !== -1) {
+        modifiedField = field.substring(0, indexOfDot);
+      } else {
+        modifiedField = field;
+      }
+      // If that field is updated and inherited
+      if (inheritedFields.has(modifiedField)){
+        // Perform the same update on the descendants
+        if (!childModifier[operator]) childModifier[operator] = {};
+        if (!descendantModifier[operator]) descendantModifier[operator] = {};
+        childModifier[operator][`parent.${field}`] = update[operator][field];
+        descendantModifier[operator][`ancestors.$.${field}`] = update[operator][field];
+      }
+    }
+  }
+
+  // Update the parent object of its children
+  updateChildren({
+    parentId: _id,
+    modifier: childModifier,
+  });
+
+  // Update the ancestors object of its descendants
+  updateDescendants({
+    ancestorId: _id,
+    modifier: descendantModifier,
+  });
+}
+
+export default function propagateInheritanceUpdateMixin(methodOptions){
+  let runFunc = methodOptions.run;
+  methodOptions.run = function({_id, update}){
+    const result = runFunc.apply(this, arguments);
+    propagateInheritanceUpdate({_id, update});
+    return result;
+  };
+  return methodOptions;
+}

app/imports/api/creature/mixins/recomputeCreatureMixin.js

@@ -0,0 +1,17 @@
+import { recomputeCreatureById } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+
+export default function recomputeCreatureMixin(methodOptions){
+  let runFunc = methodOptions.run;
+  methodOptions.run = function({charId}){
+    const result = runFunc.apply(this, arguments);
+    if (
+      methodOptions.skipRecompute &&
+      methodOptions.skipRecompute.apply(this, arguments)
+    ) {
+      return result;
+    }
+    recomputeCreatureById(charId);
+    return result;
+  };
+  return methodOptions;
+}

app/imports/api/creature/mixins/setDocToLastMixin.js

@@ -0,0 +1,27 @@
+import SimpleSchema from 'simpl-schema';
+import { setDocToLastOrder } from '/imports/api/parenting/order.js';
+
+export function setDocToLastMixin(methodOptions){
+  // Make sure the doc has a charId
+  // This mixin should come before simpleSchemaMixin so that it can extend the
+  // schema before it is turned into a validate function
+  if (methodOptions.validate){
+    throw new Meteor.Error(`setDocToLastMixin should come before simpleSchemaMixin`);
+  }
+  methodOptions.schema = new SimpleSchema({
+    charId: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    },
+  }).extend(methodOptions.schema);
+  let collection = methodOptions.collection;
+  if (!collection){
+    throw new Meteor.Error("`collection` required in method options for setDocToLastMixin");
+  }
+  let runFunc = methodOptions.run;
+  methodOptions.run = function(doc){
+    setDocToLastOrder({collection, doc});
+    return runFunc.apply(this, arguments);
+  };
+  return methodOptions;
+}

app/imports/api/creature/mixins/simpleSchemaMixin.js

@@ -0,0 +1,51 @@
+// Copied from https://github.com/sethjgore/meteor-simple-schema-mixin
+// and updated to simpl-schema npm package
+import SimpleSchema from 'simpl-schema';
+
+export default function simpleSchemaMixin(methodOptions) {
+  // If the user didn't give us a schema and they did give us a validate, assume
+  // that they are choosing to use the validate way of doing things in this call.
+  //  If they've built a wrapper around ValidateMethod that includes this mixin
+  // all the time, this could happen semi-"intentionally". There may be times they
+  // just don't want to use a schema and have specified a "validate" option. So
+  // returning the unchanged options instead of an error seems proper.
+  if ((typeof methodOptions.schema === 'undefined'
+      && typeof methodOptions.validate !== 'undefined')
+    || (typeof methodOptions.schema !== 'undefined' && methodOptions.schema === null
+      && typeof methodOptions.validate !== 'undefined' && methodOptions.validate !== null)) {
+    return methodOptions;
+  }
+
+  // If they truly gave us both... that just doesn't seem proper.
+  if (methodOptions.validate && methodOptions.validate !== null) {
+    throw new Meteor.Error(
+      'simpleSchemaMixin.options',
+      '"schema" and "validate" options cannot be used together');
+  }
+
+  // Note that setting them both null will make it through, defaulting to the
+  // schema = null behavior (enforce no args) instead of the validate = null
+  // behavior (do no validation).
+
+  const newOptions = methodOptions;
+  newOptions.schemaValidatorOptions =
+    newOptions.schemaValidatorOptions ||
+    { clean: true, filter: false };
+  let simpleSchema;
+  if (!newOptions.schema || newOptions.schema === null) {
+    // Allow simply leaving off both the schema and validate specifications
+    // or setting them to "null" as a shorthand. In this case, unlike
+    // the straight default validate or typical coder's call to validator,
+    // we will ENFORCE the Method be called without parameters because of
+    // the "filter: false" above.
+    simpleSchema = new SimpleSchema({});
+  } else if (newOptions.schema instanceof SimpleSchema) {
+    // In this one case, we can save ourselves the time to make a schema out
+    // of the schema.
+    simpleSchema = newOptions.schema;
+  } else {
+    simpleSchema = new SimpleSchema(newOptions.schema);
+  }
+  newOptions.validate = simpleSchema.validator(newOptions.schemaValidatorOptions);
+  return newOptions;
+};

app/imports/api/creature/mixins/updateSchemaMixin.js

@@ -0,0 +1,67 @@
+const argumentSchema = new SimpleSchema({
+  _id: SimpleSchema.RegEx.Id,
+  update: {
+    type: Object,
+    blackbox: true,
+  },
+});
+
+// Modified simpleSchemaMixin
+import SimpleSchema from 'simpl-schema';
+
+export default function updateSchemaMixin(methodOptions) {
+  // If the user didn't give us a schema and they did give us a validate, assume
+  // that they are choosing to use the validate way of doing things in this call.
+  if ((
+    typeof methodOptions.schema === 'undefined' &&
+    typeof methodOptions.validate !== 'undefined'
+  ) || (
+    typeof methodOptions.schema !== 'undefined' &&
+    methodOptions.schema === null &&
+    typeof methodOptions.validate !== 'undefined' &&
+    methodOptions.validate !== null
+  )) {
+    return methodOptions;
+  }
+
+  // If they truly gave us both... that just doesn't seem proper.
+  if (methodOptions.validate && methodOptions.validate !== null) {
+    throw new Meteor.Error(
+      'simpleSchemaMixin.options',
+      '"schema" and "validate" options cannot be used together');
+  }
+
+  // Note that setting them both null will make it through, defaulting to the
+  // schema = null behavior (enforce no args) instead of the validate = null
+  // behavior (do no validation).
+
+  // Apply default validator options if none are provided
+  methodOptions.schemaValidatorOptions =
+    methodOptions.schemaValidatorOptions ||
+    { clean: true, modifier: true };
+
+  // Make the update schema a SimpleSchema, if it isn't already
+  let updateSchema;
+  if (methodOptions.schema instanceof SimpleSchema) {
+    updateSchema = methodOptions.schema;
+  } else {
+    updateSchema = new SimpleSchema(methodOptions.schema);
+  }
+
+  // Set up the new validation
+  methodOptions.validate = function(args){
+    argumentSchema.validate(args);
+    updateSchema.validate(
+      {$set: args.update},
+      methodOptions.schemaValidatorOptions
+    );
+  };
+
+  // Give a default run function if one isn't supplied
+  if (!methodOptions.run){
+    methodOptions.run = function({_id, update}){
+      return methodOptions.collection.update(_id, {$set: update});
+    };
+  }
+  return methodOptions;
+}

app/imports/api/creature/removeCreature.js

@@ -0,0 +1,41 @@
+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/CreatureProperties.js';
+import CreatureLogs from '/imports/api/creature/log/CreatureLogs.js';
+import Experiences from '/imports/api/creature/experience/Experiences.js';
+
+function removeRelatedDocuments(creatureId){
+  CreatureProperties.remove({'ancestors.id': creatureId});
+  CreatureLogs.remove({creatureId});
+  Experiences.remove({creatureId});
+}
+
+const removeCreature = new ValidatedMethod({
+  name: 'Creatures.methods.removeCreature', // DDP method name
+  validate: new SimpleSchema({
+    charId: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({charId}) {
+    assertOwnership(charId, this.userId)
+    this.unblock();
+    removeCreatureWork(charId)
+  },
+});
+
+export function removeCreatureWork(creatureId){
+  Creatures.remove(creatureId);
+  removeRelatedDocuments(creatureId);
+}
+
+export default removeCreature;

app/imports/api/creature/restCreature.js

@@ -0,0 +1,116 @@
+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/CreatureProperties.js';
+import { assertEditPermission } from '/imports/api/creature/creaturePermissions.js';
+import { recomputeCreatureById } from '/imports/api/creature/computation/methods/recomputeCreature.js';
+
+const restCreature = new ValidatedMethod({
+  name: 'creature.methods.longRest',
+  validate: new SimpleSchema({
+    creatureId: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    },
+    restType: {
+      type: String,
+      allowedValues: ['shortRest', 'longRest'],
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({creatureId, restType}) {
+    let creature = Creatures.findOne(creatureId, {
+      fields: {
+        owner: 1,
+        writers: 1,
+        settings: 1,
+      }
+    }) ;
+    // Need edit permissions
+    assertEditPermission(creature, this.userId);
+
+    // Long rests reset short rest properties as well
+    let resetFilter;
+    if (restType === 'shortRest'){
+      resetFilter = 'shortRest'
+    } else {
+      resetFilter = {$in: ['shortRest', 'longRest']}
+    }
+    // Only apply to active properties
+    let filter = {
+      'ancestors.id': creatureId,
+      reset: resetFilter,
+      removed: {$ne: true},
+      inactive: {$ne: true},
+    };
+    // update all attribute's damage
+    filter.type = 'attribute';
+    CreatureProperties.update(filter, {
+      $set: {damage: 0}
+    }, {
+      selector: {type: 'attribute'},
+      multi: true,
+    });
+    // Update all action-like properties' usesUsed
+    filter.type = {$in: [
+      'action',
+      'attack',
+      'spell'
+    ]};
+    CreatureProperties.update(filter, {
+      $set: {usesUsed: 0}
+    }, {
+      selector: {type: 'action'},
+      multi: true,
+    });
+    // Reset half hit dice on a long rest, starting with the highest dice
+    if (restType === 'longRest'){
+      let hitDice = CreatureProperties.find({
+        'ancestors.id': creatureId,
+        type: 'attribute',
+        attributeType: 'hitDice',
+        removed: {$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'
+      });
+      // Get the hit dice in decending order of hitDiceSize
+      let compare = (a, b) => collator.compare(b.hitDiceSize, a.hitDiceSize)
+      hitDice.sort(compare);
+      // Get the total number of hit dice that can be recovered this rest
+      let totalHd = hitDice.reduce((sum, hd) => sum + (hd.value || 0), 0);
+      let resetMultiplier = creature.settings.hitDiceResetMultiplier || 0.5;
+      let recoverableHd = Math.max(Math.floor(totalHd*resetMultiplier), 1);
+      // recover each hit dice in turn until the recoverable amount is used up
+      let amountToRecover, resultingDamage;
+      hitDice.forEach(hd => {
+        if (!recoverableHd) return;
+        amountToRecover = Math.min(recoverableHd, hd.damage || 0);
+        if (!amountToRecover) return;
+        recoverableHd -= amountToRecover;
+        resultingDamage = hd.damage - amountToRecover;
+        CreatureProperties.update(hd._id, {
+          $set: {damage: resultingDamage}
+        }, {
+          selector: {type: 'attribute'},
+        });
+      });
+    }
+    recomputeCreatureById(creatureId);
+  },
+});
+
+export default restCreature;

app/imports/api/getModifierFields.js

@@ -0,0 +1,28 @@
+import MONGO_OPERATORS from '/imports/constants/MONGO_OPERATORS.js';
+
+const hasAny = function(values){
+  for (let value of values){
+    if (this.has(value)){
+      return true;
+    }
+  }
+  return false;
+};
+
+// Returns a Set of fields the modifier changes
+// The set has been extended with the "hasAny" function
+export default function getModifierFields (modifier) {
+  let fields = new Set();
+
+  for (let operator of MONGO_OPERATORS){
+    if (modifier[operator]) for (let field in modifier[operator]){
+      const indexOfDot = field.indexOf('.');
+      if (indexOfDot !== -1) {
+        field = field.substring(0, indexOfDot);
+      }
+      fields.add(field);
+    }
+  }
+  fields.hasAny = hasAny;
+  return fields;
+}

app/imports/api/icons/Icons.js

@@ -0,0 +1,97 @@
+import SimpleSchema from 'simpl-schema';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import { assertAdmin } from '/imports/api/sharing/sharingPermissions.js';
+
+let Icons = new Mongo.Collection('icons');
+
+let iconsSchema = new SimpleSchema({
+	name: {
+		type: String,
+    unique: true,
+    index: 1,
+	},
+	description: {
+		type: String,
+		optional: true,
+	},
+  tags: {
+    type: Array,
+    optional: true,
+    index: 1,
+  },
+  'tags.$': {
+    type: String,
+  },
+  shape: {
+    type: String,
+  },
+});
+
+if (Meteor.isServer) {
+  Icons._ensureIndex({
+    'name': 'text',
+    'description': 'text',
+		'tags': 'text',
+  });
+}
+
+const storedIconsSchema = new SimpleSchema({
+  name: {
+    type: String,
+  },
+  shape: {
+    type: String,
+  },
+});
+
+Icons.attachSchema(iconsSchema);
+
+// This method does not validate icons against the schema, use wisely;
+const writeIcons = new ValidatedMethod({
+	name: 'icons.write',
+	validate: null,
+	run(icons){
+    assertAdmin(this.userId);
+    if (Meteor.isServer){
+      this.unblock();
+      Icons.rawCollection().insert(icons, {ordered: false});
+    }
+	}
+});
+
+const findIcons = new ValidatedMethod({
+  name: 'icons.find',
+  validate: new SimpleSchema({
+    search: {
+      type: String,
+      max: 30,
+      optional: true,
+    },
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 20,
+    timeInterval: 10000,
+  },
+  run({search}){
+    if (!search) return [];
+    if (!Meteor.isServer) return;
+    return Icons.find(
+      { $text: {$search: search} },
+      {
+        // relevant documents have a higher score.
+        fields: {
+          score: { $meta: 'textScore' }
+        },
+        // `score` property specified in the projection fields above.
+        sort: {
+          score: { $meta: 'textScore' }
+        }
+      }
+    ).fetch();
+  }
+})
+
+export { writeIcons, findIcons, storedIconsSchema };
+export default Icons;

app/imports/api/library/Libraries.js

@@ -0,0 +1,131 @@
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import SimpleSchema from 'simpl-schema';
+import SharingSchema from '/imports/api/sharing/SharingSchema.js';
+import simpleSchemaMixin from '/imports/api/creature/mixins/simpleSchemaMixin.js';
+import { assertEditPermission, assertOwnership } from '/imports/api/sharing/sharingPermissions.js';
+import LibraryNodes from '/imports/api/library/LibraryNodes.js';
+import { getUserTier } from '/imports/api/users/patreon/tiers.js'
+
+/**
+ * Libraries are trees of library nodes where each node represents a character
+ * property.
+ *
+ * Libraries can be shared, have multiple readers and writers, and can be
+ * subscribed to.
+ *
+ * Permissions to library nodes are controlled by the libraries they belong to.
+ */
+let Libraries = new Mongo.Collection('libraries');
+
+let LibrarySchema = new SimpleSchema({
+	name: {
+    type: String,
+  },
+	isDefault: {
+		type: Boolean,
+		optional: true,
+	},
+});
+
+LibrarySchema.extend(SharingSchema);
+
+Libraries.attachSchema(LibrarySchema);
+
+export default Libraries;
+
+const insertLibrary = new ValidatedMethod({
+  name: 'libraries.insert',
+	mixins: [
+		simpleSchemaMixin,
+  ],
+  schema: LibrarySchema.omit('owner', 'isDefault'),
+  run(library) {
+    if (!this.userId) {
+      throw new Meteor.Error('Libraries.methods.insert.denied',
+      'You need to be logged in to insert a library');
+    }
+    let tier = getUserTier(this.userId);
+    if (!tier.paidBenefits){
+      throw new Meteor.Error('Libraries.methods.insert.denied',
+      `The ${tier.name} tier does not allow you to insert a library`);
+    }
+    library.owner = this.userId;
+		return Libraries.insert(library);
+  },
+});
+
+const updateLibraryName = new ValidatedMethod({
+	name: 'libraries.updateName',
+	validate: new SimpleSchema({
+		_id: {
+			type: String,
+			regEx: SimpleSchema.RegEx.id
+		},
+		name: {
+			type: String,
+		},
+	}).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+	run({_id, name}){
+		let library = Libraries.findOne(_id);
+		assertEditPermission(library, this.userId);
+		Libraries.update(_id, {$set: {name}});
+	},
+});
+
+const setLibraryDefault = new ValidatedMethod({
+  name: 'libraries.makeLibraryDefault',
+	validate: new SimpleSchema({
+		_id: {
+			type: String,
+			regEx: SimpleSchema.RegEx.id
+		},
+		isDefault: {
+			type: Boolean,
+		},
+	}).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id, isDefault}) {
+		if (!Meteor.users.isAdmin()){
+			throw new Meteor.Error('Permission denied', 'User must be admin to set libraries as default');
+		}
+		return Libraries.update(_id, {$set: {isDefault}});
+  },
+});
+
+const removeLibrary = new ValidatedMethod({
+	name: 'libraries.remove',
+	validate: new SimpleSchema({
+		_id: {
+			type: String,
+			regEx: SimpleSchema.RegEx.id
+		},
+	}).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+	run({_id}){
+		let library = Libraries.findOne(_id);
+		assertOwnership(library, this.userId);
+    this.unblock();
+    removeLibaryWork(_id)
+	}
+});
+
+export function removeLibaryWork(libraryId){
+  Libraries.remove(libraryId);
+  LibraryNodes.remove({'ancestors.id': libraryId});
+}
+
+export { LibrarySchema, insertLibrary, setLibraryDefault, updateLibraryName, removeLibrary };

app/imports/api/library/LibraryNodes.js

@@ -0,0 +1,203 @@
+import { Meteor } from 'meteor/meteor';
+import { Mongo } from 'meteor/mongo';
+import { ValidatedMethod } from 'meteor/mdg:validated-method';
+import { RateLimiterMixin } from 'ddp-rate-limiter-mixin';
+import SimpleSchema from 'simpl-schema';
+import ColorSchema from '/imports/api/properties/subSchemas/ColorSchema.js';
+import ChildSchema from '/imports/api/parenting/ChildSchema.js';
+import propertySchemasIndex from '/imports/api/properties/propertySchemasIndex.js';
+import Libraries from '/imports/api/library/Libraries.js';
+import { assertEditPermission } from '/imports/api/sharing/sharingPermissions.js';
+import { softRemove } from '/imports/api/parenting/softRemove.js';
+import SoftRemovableSchema from '/imports/api/parenting/SoftRemovableSchema.js';
+import { storedIconsSchema } from '/imports/api/icons/Icons.js';
+
+let LibraryNodes = new Mongo.Collection('libraryNodes');
+
+let LibraryNodeSchema = new SimpleSchema({
+	type: {
+    type: String,
+    allowedValues: Object.keys(propertySchemasIndex),
+  },
+	tags: {
+		type: Array,
+		defaultValue: [],
+	},
+	'tags.$': {
+		type: String,
+	},
+  icon: {
+    type: storedIconsSchema,
+    optional: true,
+  }
+});
+
+// Set up server side search index
+if (Meteor.isServer) {
+  LibraryNodes._ensureIndex({
+    'name': 'text',
+		'tags': 'text',
+  });
+}
+
+for (let key in propertySchemasIndex){
+	let schema = new SimpleSchema({});
+	schema.extend(LibraryNodeSchema);
+  schema.extend(ColorSchema);
+	schema.extend(propertySchemasIndex[key]);
+	schema.extend(ChildSchema);
+	schema.extend(SoftRemovableSchema);
+	LibraryNodes.attachSchema(schema, {
+		selector: {type: key}
+	});
+}
+
+function getLibrary(node){
+  if (!node) throw new Meteor.Error('No node provided');
+  let library = Libraries.findOne(node.ancestors[0].id);
+  if (!library) throw new Meteor.Error('Library does not exist');
+  return library;
+}
+
+function assertNodeEditPermission(node, userId){
+  let lib = getLibrary(node);
+  return assertEditPermission(lib, userId);
+}
+
+const insertNode = new ValidatedMethod({
+  name: 'libraryNodes.insert',
+	validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run(libraryNode) {
+    delete libraryNode._id;
+    assertNodeEditPermission(libraryNode, this.userId);
+		return LibraryNodes.insert(libraryNode);
+  },
+});
+
+const duplicateNode = new ValidatedMethod({
+  name: 'libraryNodes.duplicate',
+	validate: new SimpleSchema({
+    _id: {
+      type: String,
+      regEx: SimpleSchema.RegEx.Id,
+    }
+  }).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id}) {
+    let libraryNode = LibraryNodes.findOne(_id);
+    assertNodeEditPermission(libraryNode, this.userId);
+    delete libraryNode._id;
+		return LibraryNodes.insert(libraryNode);
+  },
+})
+
+const updateLibraryNode = new ValidatedMethod({
+  name: 'libraryNodes.update',
+  validate({_id, path}){
+		if (!_id) return false;
+		// We cannot change these fields with a simple update
+		switch (path[0]){
+			case 'type':
+      case 'order':
+      case 'parent':
+      case 'ancestors':
+				return false;
+		}
+  },
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+  run({_id, path, value}) {
+    let node = LibraryNodes.findOne(_id);
+    assertNodeEditPermission(node, 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}};
+    }
+		return LibraryNodes.update(_id, modifier, {
+			selector: {type: node.type},
+		});
+  },
+});
+
+const pushToLibraryNode = new ValidatedMethod({
+	name: 'libraryNodes.push',
+	validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+	run({_id, path, value}){
+		let node = LibraryNodes.findOne(_id);
+    assertNodeEditPermission(node, this.userId);
+		return LibraryNodes.update(_id, {
+			$push: {[path.join('.')]: value},
+		}, {
+			selector: {type: node.type},
+		});
+	}
+});
+
+const pullFromLibraryNode = new ValidatedMethod({
+	name: 'libraryNodes.pull',
+	validate: null,
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+	run({_id, path, itemId}){
+		let node = LibraryNodes.findOne(_id);
+    assertNodeEditPermission(node, this.userId);
+		return LibraryNodes.update(_id, {
+			$pull: {[path.join('.')]: {_id: itemId}},
+		}, {
+			selector: {type: node.type},
+			getAutoValues: false,
+		});
+	}
+});
+
+const softRemoveLibraryNode = new ValidatedMethod({
+	name: 'libraryNodes.softRemove',
+	validate: new SimpleSchema({
+		_id: SimpleSchema.RegEx.Id
+	}).validator(),
+  mixins: [RateLimiterMixin],
+  rateLimit: {
+    numRequests: 5,
+    timeInterval: 5000,
+  },
+	run({_id}){
+		let node = LibraryNodes.findOne(_id);
+    assertNodeEditPermission(node, this.userId);
+		softRemove({_id, collection: LibraryNodes});
+	}
+});
+
+export default LibraryNodes;
+export {
+	LibraryNodeSchema,
+	insertNode,
+  duplicateNode,
+	updateLibraryNode,
+	pullFromLibraryNode,
+	pushToLibraryNode,
+	softRemoveLibraryNode,
+};

app/imports/api/meta/Blacklist.js

@@ -0,0 +1,11 @@
+import SimpleSchema from 'simpl-schema';
+
+Blacklist = new Mongo.Collection("blacklist");
+
+Schemas.Blacklist = new SimpleSchema({
+	userId: {
+		type: String,
+	},
+});
+
+Blacklist.attachSchema(Schemas.Blacklist);

app/imports/api/meta/ChangeLogs.js

@@ -0,0 +1,29 @@
+import SimpleSchema from 'simpl-schema';
+
+ChangeLogs = new Mongo.Collection("changeLogs");
+
+Schemas.ChangeLog = new SimpleSchema({
+	version: {
+		type: String,
+	},
+	changes: {
+		type: [String],
+	},
+});
+
+ChangeLogs.attachSchema(Schemas.ChangeLog);
+
+ChangeLogs.allow({
+	insert: function(userId, doc) {
+		var user = Meteor.users.findOne(userId);
+		if (user) return _.contains(user.roles, "admin");
+	},
+	update: function(userId, doc, fields, modifier) {
+		var user = Meteor.users.findOne(userId);
+		if (user) return _.contains(user.roles, "admin");
+	},
+	remove: function(userId, doc) {
+		var user = Meteor.users.findOne(userId);
+		if (user) return _.contains(user.roles, "admin");
+	},
+});

app/imports/api/meta/Reports.js

@@ -0,0 +1,81 @@
+import SimpleSchema from 'simpl-schema';
+
+Reports = new Mongo.Collection("reports");
+
+Schemas.Report = new SimpleSchema({
+	owner: {
+		type: String,
+		regEx: SimpleSchema.RegEx.Id,
+	},
+	title: {
+		type: String,
+		trim: false,
+		optional: true,
+	},
+	description: {
+		type: String,
+		trim: false,
+		optional: true,
+	},
+	type: {
+		type: String,
+		allowedValues: ["General Feedback", "Bug", "Suggested Change", "Feature Request"],
+		defaultValue: "General Feedback",
+	},
+	//the immediate impact of doing this action (eg. -1 rages)
+	severity: {
+		type: SimpleSchema.Integer,
+		defaultValue: 5,
+		min: 1,
+		max: 10,
+	},
+	metaData: {
+		type: Object,
+		blackbox: true,
+	},
+});
+
+Reports.attachSchema(Schemas.Report);
+
+Meteor.methods({
+	insertReport: function(report) {
+		check(report, {
+			title: String,
+			description: String,
+			type: String,
+			severity: Number,
+			metaData: Object,
+		});
+		report.owner = this.userId;
+		var id = Reports.insert(report);
+		var user = Meteor.users.findOne(this.userId);
+		var sender = user &&
+			user.emails &&
+			user.emails[0] &&
+			user.emails[0].address ||
+			user.services &&
+			user.services.google &&
+			user.services.google.email ||
+			"reports@dicecloud.com";
+		var bodyText = "Report ID: " + id +
+			"\nSeverity: " + report.severity +
+			"\nType: " + report.type +
+			"\n\n" + report.description;
+		Email.send({
+			from: sender,
+			to: "stefan.zermatten@gmail.com",
+			subject: "DiceCloud feedback - " + report.title,
+			text: bodyText,
+		});
+	},
+	deleteReport: function(id) {
+		var user = Meteor.users.findOne(this.userId);
+		if (!_.contains(user.roles, "admin")){
+			throw new Meteor.Error(
+				"not admin",
+				"The user must be an administrator to delete feedback"
+			);
+		}
+		Reports.remove(id);
+	},
+});