/****
* Classes
****/
//<Assets used in the game will automatically appear here>
// 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 = 5;
  self.direction = 0; // 0: straight, 1: left, 2: right
  self.update = function () {
    if (self.direction === 1) {
      self.rotation -= 0.05;
    } else if (self.direction === 2) {
      self.rotation += 0.05;
    }
    self.x += self.speed * Math.cos(self.rotation);
    self.y += self.speed * Math.sin(self.rotation);
  };
  self.turnLeft = function () {
    self.direction = 1;
  };
  self.turnRight = function () {
    self.direction = 2;
  };
  self.straighten = function () {
    self.direction = 0;
  };
});
// Obstacle class
var Obstacle = Container.expand(function () {
  var self = Container.call(this);
  var obstacleGraphics = self.attachAsset('obstacle', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.update = function () {
    self.y += 5;
    if (self.y > 2732) {
      self.destroy();
    }
  };
});

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

/****
* Game Code
****/
// Initialize variables
var car = new Car();
car.x = 2048 / 2;
car.y = 2732 - 200;
game.addChild(car);
var obstacles = [];
var score = 0;
var scoreTxt = new Text2('0', {
  size: 150,
  fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Handle touch events
game.down = function (x, y, obj) {
  if (x < 2048 / 2) {
    car.turnLeft();
  } else {
    car.turnRight();
  }
};
game.up = function (x, y, obj) {
  car.straighten();
};
// Update game state
game.update = function () {
  car.update();
  // Create obstacles
  if (LK.ticks % 60 === 0) {
    var obstacle = new Obstacle();
    obstacle.x = Math.random() * 2048;
    obstacle.y = -100;
    obstacles.push(obstacle);
    game.addChild(obstacle);
  }
  // Update obstacles
  for (var i = obstacles.length - 1; i >= 0; i--) {
    obstacles[i].update();
    if (car.intersects(obstacles[i])) {
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
    }
  }
  // Update score
  score += 1;
  scoreTxt.setText(score);
};