新增box复合体 修复vector2运算问题

source/src/Physics/Physics.ts

@@ -0,0 +1,7 @@
+class Physics {
+    private static _spatialHash: SpatialHash;
+
+    public static overlapCircleAll(center: Vector2, randius: number, results: any[], layerMask = -1){
+        return this._spatialHash.overlapCircle(center, randius, results, layerMask);
+    }
+}