/**** 
* Classes
****/ 
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.xSpeed = 10.9375;
	self.ySpeed = -20;
	self.gravity = 1;
	self.lift = -15;
	self.isInAir = false;
	self.flap = function () {
		if (self.isInAir < 2) {
			self.ySpeed = self.lift * 1.5;
			self.isInAir += 1;
			var shadow = game.addChild(new Shadow()); // Add a shadow particle
			shadow.x = self.x; // Position the shadow at the bird's current position
			shadow.y = self.y;
		}
		if (bird.intersects(leftWall)) {
			bird.xSpeed = 30; // Add positive x speed when bird jumps from the left wall
		} else if (bird.intersects(rightWall)) {
			bird.xSpeed = -30; // Add negative x speed when bird jumps from the right wall
		}
	};
	self.update = function () {
		if (game.isMouseDown) {
			self.ySpeed += self.gravity / 3;
		} else {
			self.ySpeed += self.gravity;
		}
		self.y += self.ySpeed;
		self.x += self.xSpeed;
		if (self.y <= 0 || self.y >= 2732) {
			self.speed = -self.speed;
		}
		if (self.xSpeed === 0) {
			birdGraphics.scale.x = bird.intersects(leftWall) ? -1 : 1;
		} else {
			birdGraphics.scale.x = self.xSpeed > 0 ? -1 : 1;
		}
		// Bird rotation removed
	};
});
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0,
		anchorY: 0
	});
	self.speed = 5;
	self.move = function (speed) {
		self.y += speed;
	};
});
var Shadow = Container.expand(function () {
	var self = Container.call(this);
	var shadowGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	shadowGraphics.tint = 0x000000; // Tint the shadow to black
	shadowGraphics.alpha = 0.5; // Make the shadow semi-transparent
	self.fadeOut = function () {
		if (shadowGraphics.alpha > 0) {
			shadowGraphics.alpha -= 0.05; // Gradually decrease the alpha to create a fade out effect
		} else {
			self.destroy(); // Destroy the shadow when it's fully transparent
		}
	};
});
var Wall = Container.expand(function () {
	var self = Container.call(this);
	var wallGraphics = self.attachAsset('wall', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x111111
});

/**** 
* Game Code
****/ 
game.score = 0;
game.obstacleSpeed = 5;
game.obstacleSpeedIncrease = 0.005;
game.checkObstacleCollision = function (obstacles) {
	for (var i = 0; i < obstacles.length; i++) {
		obstacles[i].move();
		var dist = Math.sqrt(Math.pow(bird.x - obstacles[i].x, 2) + Math.pow(bird.y - obstacles[i].y, 2));
		if (dist < 280) {
			LK.setScore(game.score);
			LK.showGameOver();
		}
	}
};
var background = game.addChild(LK.getAsset('background', {
	anchorX: 0.5,
	anchorY: 1,
	x: 1024,
	y: 2732
}));
var scoreText = new Text2('0', {
	size: 150,
	fill: '#ffffff',
	font: 'Impact',
	dropShadow: true,
	dropShadowColor: '#222a9a',
	dropShadowBlur: 5,
	dropShadowDistance: 7,
	dropShadowAngle: 0
});
scoreText.anchor.set(.5, 0);
LK.gui.top.addChild(scoreText);
var scoreText2 = new Text2('0', {
	size: 150,
	fill: '#ffffff',
	font: 'Impact'
});
scoreText2.anchor.set(.5, 0);
scoreText2.x = -4;
scoreText2.y = -5;
LK.gui.top.addChild(scoreText2);
LK.gui.top.addChild(scoreText);
var bird = game.addChild(new Bird());
var leftWall = game.addChild(new Wall());
leftWall.x = 0;
leftWall.y = 1366;
var rightWall = game.addChild(new Wall());
rightWall.x = 2048;
rightWall.y = 1366;
var leftObstacles = [],
	rightObstacles = [];
var obstacleSpawnRandomness = 120;
var obstacleSpawnRandomnessDecrease = 0.025 * (2 / 3);
var obstacleSpawnY = -500;
var leftObstacleSpawnTime = Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness;
var rightObstacleSpawnTime = Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness;
bird.x = 1024;
bird.y = 1366;
game.isMouseDown = false;
game.isUpEventTriggered = true;
game.isUpEventTriggered = true;
game.on('down', function (obj) {
	if (game.isUpEventTriggered) {
		bird.flap();
		game.isMouseDown = true;
		game.isUpEventTriggered = false;
	}
});
game.on('up', function (obj) {
	game.isMouseDown = false;
	game.isUpEventTriggered = true;
});
LK.on('tick', function () {
	bird.update();
	// Update the shadow particles
	var shadowCount = 0;
	for (var i = game.children.length - 1; i >= 0; i--) {
		if (game.children[i] instanceof Shadow) {
			game.children[i].fadeOut();
			shadowCount++;
		}
		// If there are more than 15 shadow particles, remove the oldest one
		if (shadowCount > 15) {
			game.children[i].destroy();
		}
	}
	if (game.score > 2) {
		tutorialText.y += 5;
		tutorialTextWhite.y += 5;
	}
	scoreText.setText(game.score);
	scoreText2.setText(game.score);
	game.obstacleSpeed += game.obstacleSpeedIncrease;
	obstacleSpawnRandomness -= obstacleSpawnRandomnessDecrease;
	if (obstacleSpawnRandomness < 20) {
		obstacleSpawnRandomness = 20;
	}
	if (LK.ticks >= leftObstacleSpawnTime) {
		var newObstacle = game.addChild(new Obstacle());
		newObstacle.x = 0;
		newObstacle.y = obstacleSpawnY;
		leftObstacles.push(newObstacle);
		leftObstacleSpawnTime += Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness;
	}
	if (LK.ticks >= rightObstacleSpawnTime) {
		var newObstacle = game.addChild(new Obstacle());
		newObstacle.x = 2048;
		newObstacle.y = -newObstacle.height;
		newObstacle.scale.x *= -1; // Flip the obstacle horizontally
		rightObstacles.push(newObstacle);
		rightObstacleSpawnTime += Math.floor(Math.random() * obstacleSpawnRandomness) + obstacleSpawnRandomness;
	}
	if (bird.intersects(leftWall) || bird.intersects(rightWall)) {
		bird.ySpeed = game.obstacleSpeed;
		bird.xSpeed = 0;
		bird.isInAir = 0;
	}
	for (var i = leftObstacles.length - 1; i >= 0; i--) {
		leftObstacles[i].move(game.obstacleSpeed);
		if (leftObstacles[i].y > 3232) {
			leftObstacles[i].destroy();
			leftObstacles.splice(i, 1);
		}
	}
	for (var i = rightObstacles.length - 1; i >= 0; i--) {
		rightObstacles[i].move(game.obstacleSpeed);
		if (rightObstacles[i].y > 3232) {
			rightObstacles[i].destroy();
			rightObstacles.splice(i, 1);
		}
	}
	game.checkObstacleCollision(leftObstacles);
	game.checkObstacleCollision(rightObstacles);
	if (bird.y < 0 || bird.y > 2732) {
		LK.setScore(game.score);
		LK.showGameOver();
	}
});