/****
* Classes
****/
// Ball class
var Ball = Container.expand(function () {
  var self = Container.call(this);
  var ballGraphics = self.createAsset('ball', 'Ball asset', 0.5, 0.5);
  self.velocity = {
    x: 0,
    y: 0
  };
  self.radius = ballGraphics.width / 2;
  self.update = function () {
    self.x += self.velocity.x;
    self.y += self.velocity.y;
  };
  self.reset = function () {
    self.x = game.width / 2;
    self.y = game.height / 2;
    var angle = Math.random() * Math.PI * 2;
    self.velocity = {
      x: Math.cos(angle) * 5,
      y: Math.sin(angle) * 5
    };
  };
});
// Paddle class
var Paddle = Container.expand(function () {
  var self = Container.call(this);
  var paddleGraphics = self.createAsset('paddle', 'Paddle asset', 0.5, 0.5);
  self.update = function () {
    // Paddle update logic
  };
});
// Planet class
var Planet = Container.expand(function () {
  var self = Container.call(this);
  var planetGraphics = self.createAsset('planet', 'Planet asset', 0.5, 0.5);
  self.mass = 1000; // Arbitrary mass for gravity calculation
  self.radius = planetGraphics.width / 2;
  self.x = game.width / 2;
  self.y = game.height / 2;
});

/****
* Initialize Game
****/
var game = new LK.Game({
  backgroundColor: 0x000000 // Init game with black background
});

/****
* Game Code
****/
// Initialize game elements
var ball = game.addChild(new Ball());
var leftPaddle = game.addChild(new Paddle());
var rightPaddle = game.addChild(new Paddle());
var planet = game.addChild(new Planet());
// Set initial positions
leftPaddle.x = 100;
leftPaddle.y = game.height / 2;
rightPaddle.x = game.width - 100;
rightPaddle.y = game.height / 2;
ball.reset();
// Game logic
LK.on('tick', function () {
  ball.update();
  leftPaddle.update();
  rightPaddle.update();
  // Check for collisions with paddles
  if (ball.intersects(leftPaddle) || ball.intersects(rightPaddle)) {
    ball.velocity.x *= -1;
  }
  // Check for collisions with top and bottom boundaries
  if (ball.y - ball.radius <= 0 || ball.y + ball.radius >= game.height) {
    ball.velocity.y *= -1;
  }
  // Gravity effect from planet
  var dx = planet.x - ball.x;
  var dy = planet.y - ball.y;
  var distance = Math.sqrt(dx * dx + dy * dy);
  if (distance < planet.radius + ball.radius) {
    // Simple gravity effect
    var gravity = planet.mass / (distance * distance);
    var gravityX = dx / distance * gravity;
    var gravityY = dy / distance * gravity;
    ball.velocity.x += gravityX;
    ball.velocity.y += gravityY;
  }
  // Reset ball if it goes off screen
  if (ball.x < -ball.radius || ball.x > game.width + ball.radius) {
    ball.reset();
  }
});
// Touch controls for paddles
function handleTouch(obj) {
  var touchPos = obj.event.getLocalPosition(game);
  if (touchPos.x < game.width / 2) {
    leftPaddle.y = touchPos.y;
  } else {
    rightPaddle.y = touchPos.y;
  }
}
game.on('down', handleTouch);
game.on('move', handleTouch);