init framework

source/src/ECS/Entity.ts

@@ -0,0 +1,31 @@
+class Entity {
+    public name: string;
+    /** 当前实体所属的场景 */
+    public scene: Scene;
+    /** 封装实体的位置/旋转/缩放，并允许设置一个高层结构 */
+    public readonly transform: Transform;
+
+    constructor(name: string){
+        this.name = name;
+        this.transform = new Transform(this);
+    }
+
+    public attachToScene(newScene: Scene){
+        this.scene = newScene;
+        newScene.entities.push(this);
+
+        for (let i = 0; i < this.transform.childCount; i ++){
+            this.transform.getChild(i).entity.attachToScene(newScene);
+        }
+    }
+
+    public destory(){
+        this.scene.entities.remove(this);
+        this.transform.parent = null;
+
+        for (let i = this.transform.childCount - 1; i >= 0; i --){
+            let child = this.transform.getChild(i);
+            child.entity.destory();
+        }
+    }
+}