​

function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  noCursor();

  background(220);

  rectMode(CENTER);

  let xc = constrain(mouseX, 15, 385);

​

  //   player position

  let player = { x: constrain(mouseX, 15, 385), y: height - 50 };

  circle(player.x, player.y, 25);

​

  drawBullet();

}

​

// function to draw bullets

function drawBullet() {

  for (let bullet of bullets) {

    bullet.y -= 10; // bullet moves up

    circle(bullet.x, bullet.y, 10);

  }

}

​

function mousePressed() {

  let bullet = {

    x: constrain(mouseX, 15, 385),

    y: 350,

  };

  bullets.push(bullet);

}

​