新增事件发送接收器

2020-06-15 12:16:23 +08:00
parent 16892eb7af
commit c3120d791f
15 changed files with 141 additions and 123 deletions
--- a/source/src/Math/Vector2.ts
+++ b/source/src/Math/Vector2.ts
@@ -8,9 +8,9 @@ class Vector2 {
     * @param x 二维空间中的x坐标
     * @param y 二维空间的y坐标
     */
-    constructor(x: number, y?: number){
-        this.x = x;
-        this.y = y ? y : x;
+    constructor(x? : number, y?: number){
+        this.x = x ? x : 0;
+        this.y = y ? y : this.x;
    }

    public static add(value1: Vector2, value2: Vector2){