stupidshacktags.js

function animate() {
  // new frame!
  ctx.clearRect(0, 0, canvas.width, canvas.height);

  // decide if it's time to spawn a new circle
  if (shouldSpawnCircle()) {
    circles.push(new Circle())
  }

  // update and draw all circles
  var circle;
  for (var i = 0; i < circles.length; i++) {
    circle = circles[i];
    circle.update();
    circle.draw(ctx);
  }

  // queue up next frame
  requestAnimFrame(animate);
};

animate(); // starts animation loop