/****
* Classes
****/
// Bird class to represent 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.speedY = 0;
  self.gravity = 0.5;
  self.flapStrength = -10;
  self.update = function () {
    self.speedY += self.gravity;
    self.y += self.speedY;
    // Check for collision with top and bottom of the screen
    if (self.y < 0) {
      self.y = 0;
      self.speedY = 0;
    } else if (self.y > 2732) {
      self.y = 2732;
      self.speedY = 0;
    }
  };
  self.flap = function () {
    self.speedY = self.flapStrength;
  };
});
// Wall class to represent the walls
var Wall = Container.expand(function () {
  var self = Container.call(this);
  var wallGraphics = self.attachAsset('wall', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.update = function () {
    // Walls do not move in this simple version
  };
});

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

/****
* Game Code
****/
// The assets will be automatically created and loaded by the LK engine based on their usage in the code.
// For this game, we will use a bird shape and wall shapes.
var bird = game.addChild(new Bird());
bird.x = 2048 / 2;
bird.y = 2732 / 2;
var walls = [];
var wallSpacing = 600;
var wallCount = 3;
// Initialize walls
for (var i = 0; i < wallCount; i++) {
  var wall = game.addChild(new Wall());
  wall.x = (i + 1) * wallSpacing;
  wall.y = 2732 / 2;
  walls.push(wall);
}
// Handle touch events to make the bird flap
game.down = function (x, y, obj) {
  bird.flap();
};
// Update game logic
game.update = function () {
  bird.update();
  // Check for collision with walls
  for (var i = 0; i < walls.length; i++) {
    if (bird.intersects(walls[i])) {
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
    }
  }
  // Move walls to create an endless loop effect
  for (var i = 0; i < walls.length; i++) {
    walls[i].x -= 5;
    if (walls[i].x < -50) {
      walls[i].x = 2048 + wallSpacing;
    }
  }
};