bloon

var balloon = createSprite(200,200);
balloon.setAnimation("balloon");
balloon.debug = true;

var tack = createSprite(350, 50);
tack.setAnimation("tack");
tack.debug = true;

function draw() {
  background("gray");

  // check if tack is touching balloon
  if (balloon.isTouching(tack)) {
    // replace balloon image
    balloon.setAnimation("popped");
  }
  // make tack move with arrow keys
  if (keyDown("up")) {
    tack.y = tack.y - 1;
  }
  if (keyDown("down")) {
    tack.y = tack.y + 1;
  }
  if (keyDown("left")) {
    tack.x = tack.x - 1;
  }
  if (keyDown("right")) {
    tack.x = tack.x + 1;
  }

  drawSprites();
}