整理ecs框架

source/src/Physics/Shapes/Circle.ts

@@ -3,6 +3,9 @@ class Circle extends Shape {
     public radius: number;
     public _originalRadius: number;
     public center = new Vector2();
+    public get position(){
+        return new Vector2(this.parent.x, this.parent.y);
+    }
 
     public get bounds(){
         return new Rectangle().setEgretRect(this.getBounds());

source/src/Physics/Shapes/Polygon.ts

@@ -1,13 +1,22 @@
 ///<reference path="./Shape.ts" />
+/**
+ * 多边形
+ */
 class Polygon extends Shape {
+    /** 组成多边形的点。它们应该是CW和凸的。 */
     public points: Vector2[];
     private _polygonCenter: Vector2;
     private _areEdgeNormalsDirty = true;
     protected _originalPoints: Vector2[];
     public center = new Vector2();
+    /** 
+     * 多边形坐标
+     * 此为内部字段 可访问
+     */
+    public position: Vector2 = Vector2.zero;
 
     public get bounds(){
-        return new Rectangle(0, 0, this.width, this.height);
+        return new Rectangle(this.position.x, this.position.y, 0, 0);
     }
 
     public _edgeNormals: Vector2[];
@@ -158,6 +167,11 @@ class Polygon extends Shape {
         return { closestPoint: closestPoint, distanceSquared: distanceSquared, edgeNormal: edgeNormal };
     }
 
+    public recalculateBounds(collider: Collider){
+        // 如果我们没有旋转或不关心TRS我们使用localOffset作为中心，我们会从那开始
+        
+    }
+
     public pointCollidesWithShape(point: Vector2): CollisionResult {
         return ShapeCollisions.pointToPoly(point, this);
     }

source/src/Physics/Shapes/Shape.ts

@@ -1,8 +1,20 @@
-abstract class Shape extends egret.DisplayObject {
-    public abstract bounds: Rectangle;
-    public position: Vector2 = Vector2.zero;
-    public abstract center: Vector2;
+abstract class Shape {
+    /** 缓存的形状边界 内部字段 */
+    public bounds: Rectangle;
+    /**
+     * 这不是中心。这个值不一定是物体的中心。对撞机更准确。
+     * 应用任何转换旋转的localOffset
+     * 内部字段
+     */
+    public center: Vector2;
+    /**
+     * 有一个单独的位置字段可以让我们改变形状的位置来进行碰撞检查，而不是改变entity.position。
+     * 触发碰撞器/边界/散列更新的位置。
+     * 内部字段
+     */
+    public position: Vector2;
 
+    public abstract recalculateBounds(collider: Collider);
     public abstract pointCollidesWithShape(point: Vector2): CollisionResult;
     public abstract overlaps(other: Shape);
     public abstract collidesWithShape(other: Shape): CollisionResult;