Refactored computations again, split into multiple files, lots still to do

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

@@ -0,0 +1,29 @@
+import combineStat from '/imports/api/creature/computation/combineStat.js';
+import computeEffect from '/imports/api/creature/computation/computeEffect.js';
+import EffectAggregator from '/imports/api/creature/computation/EffectAggregator.js';
+import { each } from 'lodash';
+
+export default function computeStat(stat, memo){
+  // If the stat is already computed, skip it
+  if (stat.computationDetails.computed) return;
+  if (stat.computationDetails.busyComputing){
+    // Trying to compute this stat again while it is already computing.
+    // We must be in a dependency loop.
+    stat.computationDetails.computed = true;
+    stat.value = NaN;
+    stat.computationDetails.busyComputing = false;
+    stat.computationDetails.error = 'dependencyLoop';
+    return;
+  }
+  // Compute and aggregate all the effects
+  let aggregator = new EffectAggregator(stat)
+  each(stat.computationDetails.effects, (effect) => {
+    computeEffect(effect, memo);
+    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;
+}