/****
* Classes
****/
// Player class
var Player = Container.expand(function () {
  var self = Container.call(this);
  var playerGraphics = self.attachAsset('player', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.move = function (x, y) {
    self.x = x;
    self.y = y;
  };
});
//<Assets used in the game will automatically appear here>
// Train class
var Train = Container.expand(function () {
  var self = Container.call(this);
  var trainGraphics = self.attachAsset('train', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 5;
  self.update = function () {
    self.y += self.speed;
    if (self.y > 2732) {
      self.destroy();
    }
  };
});

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

/****
* Game Code
****/
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 200;
// Initialize trains array
var trains = [];
// Handle player movement
game.move = function (x, y, obj) {
  player.move(x, y);
};
// Spawn trains at intervals
var trainSpawnInterval = LK.setInterval(function () {
  var newTrain = new Train();
  newTrain.x = Math.random() * 2048;
  newTrain.y = -100;
  trains.push(newTrain);
  game.addChild(newTrain);
}, 1000);
// Update game state
game.update = function () {
  for (var i = trains.length - 1; i >= 0; i--) {
    if (trains[i].intersects(player)) {
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
    }
    if (trains[i].y > 2732) {
      trains[i].destroy();
      trains.splice(i, 1);
    }
  }
};
// Score display
var scoreTxt = new Text2('0', {
  size: 150,
  fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Update score
var score = 0;
var scoreUpdateInterval = LK.setInterval(function () {
  score += 1;
  scoreTxt.setText(score);
}, 1000);