/****
* Classes
****/
//<Write imports for supported plugins here>
//<Write entity 'classes' with empty functions for important behavior here>
var Bird = Container.expand(function () {
  var self = Container.call(this);
  var birdGraphics = self.attachAsset('bird', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speedY = 0;
  self.gravity = 0.5;
  self.flapStrength = -10;
  self.update = function () {
    self.speedY += self.gravity;
    self.y += self.speedY;
  };
  self.flap = function () {
    self.speedY = self.flapStrength;
  };
});
var Block = Container.expand(function () {
  var self = Container.call(this);
  var blockGraphics = self.attachAsset('block', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speedX = -5;
  self.update = function () {
    self.x += self.speedX;
  };
});

/****
* Initialize Game
****/
var game = new LK.Game({
  backgroundColor: 0x87ceeb // Init game with sky blue background
});

/****
* Game Code
****/
//<Write game logic code here, including initializing arrays and variables>
//<Assets used in the game will automatically appear here>
var bird = game.addChild(new Bird());
bird.x = 300;
bird.y = 1366; // Center vertically
var blocks = [];
var blockInterval = 100; // Interval for block generation
var lastBlockTime = 0;
game.down = function (x, y, obj) {
  bird.flap();
};
game.update = function () {
  bird.update();
  // Generate new blocks
  if (LK.ticks - lastBlockTime > blockInterval) {
    var block = new Block();
    block.x = 2048;
    block.y = Math.random() * 2000 + 366; // Random vertical position
    blocks.push(block);
    game.addChild(block);
    lastBlockTime = LK.ticks;
  }
  // Update blocks and check for collisions
  for (var i = blocks.length - 1; i >= 0; i--) {
    var block = blocks[i];
    block.update();
    if (block.x < -block.width) {
      block.destroy();
      blocks.splice(i, 1);
      continue;
    }
    if (bird.intersects(block)) {
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
      return;
    }
  }
  // Check if bird is out of bounds
  if (bird.y < 0 || bird.y > 2732) {
    LK.effects.flashScreen(0xff0000, 1000);
    LK.showGameOver();
  }
};