/****
* Classes
****/
//<Assets used in the game will automatically appear here>
// Kart class representing the player's kart
var Kart = Container.expand(function () {
  var self = Container.call(this);
  var kartGraphics = self.attachAsset('kart', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 0;
  self.maxSpeed = 10;
  self.acceleration = 0.2;
  self.deceleration = 0.1;
  self.update = function () {
    self.y -= self.speed;
    if (self.speed > 0) {
      self.speed -= self.deceleration;
    }
  };
  self.accelerate = function () {
    if (self.speed < self.maxSpeed) {
      self.speed += self.acceleration;
    }
  };
});
// Obstacle class representing obstacles on the track
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.y = -100;
      self.x = Math.random() * 2048;
    }
  };
});
// PowerUp class representing power-ups on the track
var PowerUp = Container.expand(function () {
  var self = Container.call(this);
  var powerUpGraphics = self.attachAsset('powerUp', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.update = function () {
    self.y += 3;
    if (self.y > 2732) {
      self.y = -100;
      self.x = Math.random() * 2048;
    }
  };
});

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

/****
* Game Code
****/
// Initialize player kart
var playerKart = new Kart();
playerKart.x = 1024;
playerKart.y = 2400;
game.addChild(playerKart);
// Initialize obstacles
var obstacles = [];
for (var i = 0; i < 5; i++) {
  var obstacle = new Obstacle();
  obstacle.x = Math.random() * 2048;
  obstacle.y = Math.random() * -2732;
  obstacles.push(obstacle);
  game.addChild(obstacle);
}
// Initialize power-ups
var powerUps = [];
for (var i = 0; i < 3; i++) {
  var powerUp = new PowerUp();
  powerUp.x = Math.random() * 2048;
  powerUp.y = Math.random() * -2732;
  powerUps.push(powerUp);
  game.addChild(powerUp);
}
// Handle touch events for acceleration
game.down = function (x, y, obj) {
  playerKart.accelerate();
};
// Update game state
game.update = function () {
  playerKart.update();
  obstacles.forEach(function (obstacle) {
    obstacle.update();
    if (playerKart.intersects(obstacle)) {
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
    }
  });
  powerUps.forEach(function (powerUp) {
    powerUp.update();
    if (playerKart.intersects(powerUp)) {
      LK.setScore(LK.getScore() + 10);
      powerUp.y = -100;
      powerUp.x = Math.random() * 2048;
    }
  });
};
// Display score
var scoreTxt = new Text2('0', {
  size: 150,
  fill: "#ffffff"
});
scoreTxt.setText(LK.getScore());
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);