/****
* Classes
****/
//<Write imports for supported plugins here>
// Bird class representing the player-controlled bird
var Bird = Container.expand(function () {
  var self = Container.call(this);
  var birdGraphics = self.attachAsset('bird', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.velocityY = 0;
  self.gravity = 0.5;
  self.lift = -10;
  self.update = function () {
    self.velocityY += self.gravity;
    self.y += self.velocityY;
    // Prevent bird from going off-screen
    if (self.y < 0) {
      self.y = 0;
      self.velocityY = 0;
    } else if (self.y > 2732) {
      self.y = 2732;
      self.velocityY = 0;
    }
  };
  self.flap = function () {
    self.velocityY = self.lift;
  };
});
// Obstacle class representing the obstacles
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.x += self.speed;
    // Remove obstacle if it goes off-screen
    if (self.x < -100) {
      self.destroy();
    }
  };
});

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

/****
* Game Code
****/
//<Assets used in the game will automatically appear here>
var bird = game.addChild(new Bird());
bird.x = 2048 / 2;
bird.y = 2732 / 2;
var obstacles = [];
var obstacleInterval = 100; // Interval for obstacle generation
var ticks = 0;
game.down = function (x, y, obj) {
  bird.flap();
};
game.update = function () {
  bird.update();
  // Generate obstacles at intervals
  if (ticks % obstacleInterval === 0) {
    var gap = 300; // Gap between top and bottom obstacles
    var topObstacleHeight = Math.random() * (2732 - gap);
    var bottomObstacleHeight = 2732 - topObstacleHeight - gap;
    var topObstacle = new Obstacle();
    topObstacle.x = 2048;
    topObstacle.y = topObstacleHeight / 2;
    obstacles.push(topObstacle);
    game.addChild(topObstacle);
    var bottomObstacle = new Obstacle();
    bottomObstacle.x = 2048;
    bottomObstacle.y = 2732 - bottomObstacleHeight / 2;
    obstacles.push(bottomObstacle);
    game.addChild(bottomObstacle);
  }
  // Update obstacles and check for collisions
  for (var i = obstacles.length - 1; i >= 0; i--) {
    var obstacle = obstacles[i];
    obstacle.update();
    if (bird.intersects(obstacle)) {
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
      return;
    }
    if (obstacle.x < -100) {
      obstacles.splice(i, 1);
    }
  }
  ticks++;
};