let x;

let y;

​

function setup() {

  createCanvas(800, 400);

    x=width/2;

  y= height/2;

}

​

function draw() {

  background(0, mouseX, mouseY);

  fill(mouseX, mouseY, 0);

  rectMode(CENTER);

  stroke(255);

  // question 2

//   rect(width/2, height/2, width/2, height/2);

  //CHALLENGE 7

  rect(x, y, width/2, height/2);

    let xSpeed= (mouseX- x)/200

    let ySpeed= (mouseY- y)/200

  x += xSpeed

  y += ySpeed

  //question 3

//   left= width/4;

//   right= 3/4 * width;

//   upper= height/4;

//   bottom= 3/4 * height

​

//   line(left, upper, right, upper);

//   line(right, upper, right, bottom);

//   line(right, bottom, left, bottom);

//   line(left, bottom, left, upper);

}