fix wx

source/src/ECS/Systems/EntitySystem.ts

@@ -60,7 +60,7 @@ module es {
         }
 
         public onChanged(entity: Entity) {
-            let contains = entity.getSystemBits().get(this.systemIndex_);
+            let contains = new es.List(this._entities).contains(entity);
             let interest = this._matcher.isInterestedEntity(entity);
 
             if (interest && !contains)
@@ -71,7 +71,6 @@ module es {
 
         public add(entity: Entity) {
             this._entities.push(entity);
-            entity.getSystemBits().set(this.systemIndex_);
             this.onAdded(entity);
         }
 
@@ -79,7 +78,6 @@ module es {
 
         public remove(entity: Entity) {
             new es.List(this._entities).remove(entity);
-            entity.getSystemBits().clear(this.systemIndex_);
             this.onRemoved(entity);
         }
 

source/src/ECS/Utils/ComponentTypeFactory.ts

@@ -0,0 +1,39 @@
+module es {
+    interface IdentityHashMap {
+        [key: string]: ComponentType;
+    }
+
+    export class ComponentTypeFactory {
+        private componentTypes_: IdentityHashMap;
+
+        private componentTypeCount_ = 0;
+
+        public types: Bag<ComponentType>;
+
+        constructor() {
+            this.componentTypes_ = {};
+            this.types = new Bag<ComponentType>();
+        }
+
+        public getTypeFor(c): ComponentType {
+            if ("number" === typeof c) {
+                return this.types.get(c);
+            }
+
+            let type: ComponentType = this.componentTypes_[getClassName(c)];
+
+            if (type == null) {
+                const index: number = this.componentTypeCount_++;
+                type = new ComponentType(c, index);
+                this.componentTypes_[getClassName(c)] = type;
+                this.types.set(index, type);
+            }
+
+            return type;
+        }
+
+        public getIndexFor(c): number {
+            return this.getTypeFor(c).getIndex();
+        }
+    }
+}