let interval = 500; // interval in milliseconds for drawing rectangles

​

function setup() {

  createCanvas(600, 400);

}

​

function draw() {

  background(220);

​

  let currentTime = millis(); // get the current time

​

  // check if enough time has passed

  if (currentTime - lastDrawTime >= interval) {

    // update the last draw time

    lastDrawTime = currentTime;

​

    // draw a rectangle at a random position

    let rectX = random(width);

    let rectY = random(height);

    let rectWidth = 50;

    let rectHeight = 30;

    fill(100, 150, 250); // set rectangle color

    rect(rectX, rectY, rectWidth, rectHeight); // draw the rectangle

  }

}

​