1moveTo(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--)f 
7let node = this.nodes[i]; 
8let ang = Math.atan2(node.y - y, node.x - x); 
9node.x =x+len * Math.cos(ang); 
10node.y = y + len * Math.sin(ang); 
11x = node.x; y = node.y; len = node.size; 
12) 
13 update() (this.moveTo(Input.mouse.x, Input.mouse.y)) 

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