新增hashSet

source/src/ECS/Entity.ts

@@ -8,7 +8,7 @@ module es {
         }
     }
 
-    export class Entity {
+    export class Entity implements IEqualityComparable {
         public static _idGenerator: number = 0;
         public static entityComparer: IComparer<Entity> = new EntityComparer();
         /**
@@ -399,6 +399,14 @@ module es {
             return compare;
         }
 
+        public equals(other: Entity): boolean {
+            return this.compareTo(other) == 0;
+        }
+
+        public getHashCode(): number {
+            return this.id;
+        }
+
         public toString(): string {
             return `[Entity: name: ${this.name}, tag: ${this.tag}, enabled: ${this.enabled}, depth: ${this.updateOrder}]`;
         }