let deltaX=0;

let deltaY=0;

​

function setup() { 

  createCanvas(400, 400);

} 

​

function draw() { 

  // background(220);

  rectMode(CENTER);

  deltaX = mouseX-tangle.x;

  deltaY = mouseY - tangle.y;

  tangle.x += deltaX*0.02;

  tangle.y += deltaY*0.02;

  rect(tangle.x,tangle.y,tangle.w,tangle.h);

}