/****
* Classes
****/
//<Assets used in the game will automatically appear here>
// Car class representing the player's vehicle
var Car = Container.expand(function () {
  var self = Container.call(this);
  var carGraphics = self.attachAsset('car', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 0;
  self.update = function () {
    self.y += self.speed;
  };
});
// Obstacle class representing other vehicles on the road
var Obstacle = Container.expand(function () {
  var self = Container.call(this);
  var obstacleGraphics = self.attachAsset('obstacle', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 5;
  self.update = function () {
    self.y += self.speed;
  };
});

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

/****
* Game Code
****/
// Initialize variables
var car;
var obstacles = [];
var score = 0;
var scoreTxt;
// Initialize game elements
function initGame() {
  // Create player's car
  car = game.addChild(new Car());
  car.x = 2048 / 2;
  car.y = 2732 - 200;
  car.speed = 0;
  // Create score text
  scoreTxt = new Text2('Score: 0', {
    size: 100,
    fill: "#ffffff"
  });
  scoreTxt.anchor.set(0.5, 0);
  LK.gui.top.addChild(scoreTxt);
  // Set up game update loop
  game.update = function () {
    // Update car position
    car.update();
    // Update obstacles
    for (var i = obstacles.length - 1; i >= 0; i--) {
      obstacles[i].update();
      if (obstacles[i].y > 2732) {
        obstacles[i].destroy();
        obstacles.splice(i, 1);
        score++;
        scoreTxt.setText('Score: ' + score);
      }
      if (car.intersects(obstacles[i])) {
        LK.effects.flashScreen(0xff0000, 1000);
        LK.showGameOver();
      }
    }
    // Add new obstacles
    if (LK.ticks % 60 == 0) {
      var newObstacle = new Obstacle();
      newObstacle.x = Math.random() * 2048;
      newObstacle.y = -100;
      obstacles.push(newObstacle);
      game.addChild(newObstacle);
    }
  };
  // Handle touch/mouse events
  game.down = function (x, y, obj) {
    car.x = x;
  };
  game.move = function (x, y, obj) {
    car.x = x;
  };
  game.up = function (x, y, obj) {
    // No action needed on release
  };
}
// Start the game
initGame();