/****
* Classes
****/
// Define the Car class
var Car = Container.expand(function () {
  var self = Container.call(this);
  var carGraphics = self.attachAsset('car', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 2;
  self.update = function () {
    self.y += self.speed;
  };
});
// The assets will be automatically created and loaded by the LK engine
// Define the Player class
var Player = Container.expand(function () {
  var self = Container.call(this);
  var playerGraphics = self.attachAsset('player', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 5;
  self.update = function () {
    self.x += self.speed;
  };
});

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

/****
* Game Code
****/
// Initialize player and cars
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 200;
var cars = [];
for (var i = 0; i < 5; i++) {
  var car = game.addChild(new Car());
  car.x = Math.random() * 2048;
  car.y = Math.random() * 2732;
  cars.push(car);
}
// Game update function
game.update = function () {
  // Update player and cars
  player.update();
  for (var i = 0; i < cars.length; i++) {
    cars[i].update();
  }
  // Check for collisions
  for (var i = 0; i < cars.length; i++) {
    if (player.intersects(cars[i])) {
      LK.showGameOver();
      break;
    }
  }
  // Check for off-screen cars
  for (var i = cars.length - 1; i >= 0; i--) {
    if (cars[i].y > 2732) {
      cars[i].destroy();
      cars.splice(i, 1);
      var car = game.addChild(new Car());
      car.x = Math.random() * 2048;
      car.y = 0;
      cars.push(car);
    }
  }
};
// Game touch events
game.down = function (x, y, obj) {
  if (x < player.x) {
    player.speed = -5;
  } else {
    player.speed = 5;
  }
};
game.up = function (x, y, obj) {
  player.speed = 0;
};