/****
* Classes
****/
//<Assets used in the game will automatically appear here>
// Define the FlappyBird class
var FlappyBird = Container.expand(function () {
  var self = Container.call(this);
  // Create and attach the bird asset
  var birdGraphics = self.attachAsset('bird', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.velocity = 0;
  self.gravity = 0.5;
  self.lift = -10;
  // Update function for the bird
  self.update = function () {
    self.velocity += self.gravity;
    self.y += self.velocity;
    // Prevent the bird from going off the screen
    if (self.y > 2732 - birdGraphics.height / 2) {
      self.y = 2732 - birdGraphics.height / 2;
      self.velocity = 0;
    }
    if (self.y < birdGraphics.height / 2) {
      self.y = birdGraphics.height / 2;
      self.velocity = 0;
    }
  };
  // Function to make the bird jump
  self.jump = function () {
    self.velocity = self.lift;
  };
});
// Define the Pipe class
var Pipe = Container.expand(function () {
  var self = Container.call(this);
  // Create and attach the pipe asset
  var pipeGraphics = self.attachAsset('pipe', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = -5;
  // Update function for the pipe
  self.update = function () {
    self.x += self.speed;
    // Remove the pipe if it goes off the screen
    if (self.x < -pipeGraphics.width / 2) {
      self.destroy();
    }
  };
});

/****
* Initialize Game
****/
var game = new LK.Game({
  backgroundColor: 0x87CEEB // Init game with sky blue background
});

/****
* Game Code
****/
// Initialize game variables
var bird;
var pipes = [];
var score = 0;
var scoreTxt;
// Function to create a new pipe
function createPipe() {
  var pipe = new Pipe();
  pipe.x = 2048 + pipe.width / 2;
  pipe.y = Math.random() * (2732 - 400) + 200; // Random y position
  pipes.push(pipe);
  game.addChild(pipe);
}
// Function to handle game over
function gameOver() {
  LK.effects.flashScreen(0xff0000, 1000);
  LK.showGameOver();
}
// Initialize the bird
bird = new FlappyBird();
bird.x = 2048 / 4;
bird.y = 2732 / 2;
game.addChild(bird);
// Initialize the score text
scoreTxt = new Text2('0', {
  size: 150,
  fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Set up the game update function
game.update = function () {
  bird.update();
  // Update pipes
  for (var i = pipes.length - 1; i >= 0; i--) {
    pipes[i].update();
    // Check for collision with the bird
    if (bird.intersects(pipes[i])) {
      gameOver();
    }
    // Remove pipes that are off the screen
    if (pipes[i].x < -pipes[i].width / 2) {
      pipes.splice(i, 1);
      score++;
      scoreTxt.setText(score);
    }
  }
  // Create new pipes periodically
  if (LK.ticks % 90 == 0) {
    createPipe();
  }
};
// Set up the game down event to make the bird jump
game.down = function (x, y, obj) {
  bird.jump();
};
// Start the game
LK.setInterval(function () {
  createPipe();
}, 1500);