messages draw on canvas

+ bugfix: vector.assign() Uncaught TypeError

src/shared_js/class/Rectangle.ts

@@ -7,7 +7,7 @@ class Rectangle implements Component {
 	width: number;
 	height: number;
 	constructor(pos: VectorInteger, width: number, height: number) {
-		this.pos = Object.assign({}, pos);
+		this.pos = new VectorInteger(pos.x, pos.y);
 		this.width = width;
 		this.height = height;
 	}
@@ -49,12 +49,10 @@ class MovingRectangle extends Rectangle implements Moving {
 		this.pos.y += Math.floor(this.dir.y * this.speed * delta);
 	}
 	moveAndCollide(delta: number, colliderArr: Rectangle[]) {
-		let oldPos = Object.assign({}, this.pos);
+		let oldPos = new VectorInteger(this.pos.x, this.pos.y);
 		this.move(delta);
-		if (colliderArr.some(this.collision, this))
-		{
-			this.pos.x = oldPos.x;
-			this.pos.y = oldPos.y;
+		if (colliderArr.some(this.collision, this)) {
+			this.pos = oldPos;
 		}
 	}
 }