refactor: initialization

app/ecs/component.js

@@ -40,23 +40,21 @@ export default class Component {
     const allocated = this.allocateMany(entries.length);
     const {properties} = this.constructor.schema.specification.concrete;
     const Schema = this.constructor.schema.constructor;
-    const keys = Object.keys(properties);
+    const keys = new Set(Object.keys(properties));
     const promises = [];
     for (let i = 0; i < entries.length; ++i) {
       const [entityId, values = {}] = entries[i];
       this.map[entityId] = allocated[i];
       this.data[allocated[i]].entity = entityId;
-      for (let k = 0; k < keys.length; ++k) {
-        const j = keys[k];
-        const instance = this.data[allocated[i]];
-        if (j in values) {
-          instance[j] = values[j];
-        }
-        else {
-          const defaultValue = Schema.defaultValue(properties[j]);
-          if ('undefined' !== typeof defaultValue) {
-            instance[j] = defaultValue;
-          }
+      const instance = this.data[allocated[i]];
+      for (const key in values) {
+        keys.delete(key);
+        instance[key] = values[key];
+      }
+      for (const key of keys) {
+        const defaultValue = Schema.defaultValue(properties[key]);
+        if ('undefined' !== typeof defaultValue) {
+          instance[key] = defaultValue;
         }
       }
       promises.push(this.load(this.data[allocated[i]]));
@@ -127,17 +125,8 @@ export default class Component {
   instanceFromSchema() {
     const Component = this;
     const {concrete} = Component.constructor.schema.specification;
-    const Schema = Component.constructor.schema.constructor;
     const Instance = class {
       $$entity = 0;
-      constructor() {
-        this.$$reset();
-      }
-      $$reset() {
-        for (const key in concrete.properties) {
-          this[`$$${key}`] = Schema.defaultValue(concrete.properties[key]);
-        }
-      }
       destroy() {}
       toNet(recipient, data) {
         return data || Component.constructor.filterDefaults(this);
@@ -163,7 +152,6 @@ export default class Component {
       },
       set: function set(v) {
         this.$$entity = v;
-        this.$$reset();
       },
     };
     for (const key in concrete.properties) {

app/ecs/components/ttl.js

@@ -5,15 +5,15 @@ export default class Ttl extends Component {
     const {ecs} = this;
     return class TtlInstance extends super.instanceFromSchema() {
       $$elapsed = 0;
+      destroy() {
+        this.$$elapsed = 0;
+      }
       get elapsed() {
         return this.$$elapsed;
       }
       set elapsed(elapsed) {
         this.$$elapsed = elapsed;
       }
-      $$reset() {
-        this.$$elapsed = 0;
-      }
       tick(elapsed) {
         this.$$elapsed += elapsed;
         if (this.$$elapsed >= this.ttl) {