deprecated some old things

deprecated/zhen/Utils/Vector2.ts

@@ -0,0 +1,21 @@
+export class Vector2 {
+    x: number;
+    y: number;
+
+    constructor(x: number, y: number) {
+        this.x = x;
+        this.y = y;
+    }
+
+    Add(vec2: Vector2) {
+        return new Vector2(this.x + vec2.x, this.y + vec2.y);
+    }
+
+    Sub(vec2: Vector2) {
+        return new Vector2(this.x - vec2.x, this.y - vec2.y);
+    }
+
+    Scale(mult: number) {
+        return new Vector2(this.x * mult, this.y * mult);;
+    }
+}