1 moveTo(x, y) {

2 this.nodes[0].updateRelative (true, true);

3 let dist ((x this.end.x) **2 +

4 (y this.end.y) **2) ** 0.5;

5 let len = Math.max(0, dist this.speed);

6 for (let i= this.nodes.length 1; i >= 0; i--) {

7 let node = this.nodes[i];

8 let ang Math.atan2(node.yy, node.x x);

9 node.x = x + len * Math.cos(ang);

10 node.y = y + len Math.sin(ang);

11 x = node.x; y = node.y; len = node.size;

12}

13 update() {this.moveTo(Input.mouse.x, Input.mouse.y)}