/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	highScore: 0
});

/**** 
* Classes
****/ 
var Bird = Container.expand(function () {
	var self = Container.call(this);
	// Bird graphics
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Bird physics properties
	self.velocity = 0;
	self.gravity = 0.5;
	self.flapStrength = -10;
	self.isDead = false;
	// Flap the bird
	self.flap = function () {
		if (!self.isDead) {
			self.velocity = self.flapStrength;
			LK.getSound('flap').play();
			// Rotate bird up when flapping
			tween(self, {
				rotation: -0.5
			}, {
				duration: 200
			});
		}
	};
	self.die = function () {
		self.isDead = true;
		LK.getSound('hit').play();
		LK.effects.flashObject(self, 0xFF0000, 500);
	};
	self.update = function () {
		if (self.isDead) {
			return;
		}
		// Apply gravity
		self.velocity += self.gravity;
		self.y += self.velocity;
		// Rotate bird based on velocity (falling rotation)
		if (self.velocity > 5) {
			tween(self, {
				rotation: 1.2
			}, {
				duration: 500
			});
		}
		// Check boundaries
		if (self.y < 0) {
			self.y = 0;
			self.velocity = 0;
		}
		if (self.y > 2732) {
			self.die();
			LK.showGameOver();
		}
	};
	return self;
});
var Pipe = Container.expand(function () {
	var self = Container.call(this);
	// Pipe properties
	self.speed = 5;
	self.scored = false;
	// Create top pipe (now much taller to extend to top of screen)
	var topPipe = self.attachAsset('pipe', {
		anchorX: 0.5,
		anchorY: 1.0,
		height: 2000 // Much taller to ensure it reaches top of screen
	});
	// Create top pipe cap
	var topPipeCap = self.attachAsset('pipeTop', {
		anchorX: 0.5,
		anchorY: 1.0,
		y: -500
	});
	// Create bottom pipe (now much taller to extend to bottom of screen)
	var bottomPipe = self.attachAsset('pipe', {
		anchorX: 0.5,
		anchorY: 0.0,
		height: 2000,
		// Much taller to ensure it reaches bottom of screen
		y: 200 // Gap will be between top and bottom pipes
	});
	// Create bottom pipe cap
	var bottomPipeCap = self.attachAsset('pipeTop', {
		anchorX: 0.5,
		anchorY: 0.0,
		y: 200
	});
	// Set pipe gap
	self.setGap = function (gapPosition, gapSize) {
		topPipe.y = gapPosition - gapSize / 2;
		topPipeCap.y = topPipe.y;
		bottomPipe.y = gapPosition + gapSize / 2;
		bottomPipeCap.y = bottomPipe.y;
	};
	self.update = function () {
		// Move pipe left
		self.x -= self.speed;
		// Check if pipe is offscreen (adjusted for wider pipes)
		if (self.x < -250) {
			self.destroy();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
// Game state variables
var bird;
var pipes = [];
var isGameStarted = false;
var spawnInterval;
var score = 0;
var highScore = storage.highScore || 0;
// Background
var background = LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0
});
game.addChild(background);
// Score text
var scoreTxt = new Text2('0', {
	size: 150,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.y = 50;
// High score text
var highScoreTxt = new Text2('Best: 0', {
	size: 80,
	fill: 0xFFFFFF
});
highScoreTxt.anchor.set(0.5, 0);
highScoreTxt.setText('Best: ' + highScore);
LK.gui.top.addChild(highScoreTxt);
highScoreTxt.y = 220;
// Initialize bird
function initBird() {
	bird = new Bird();
	bird.x = 600; // Move bird more to the center to align with centered pipes
	bird.y = 2732 / 2;
	game.addChild(bird);
}
// Create a new pipe
function spawnPipe() {
	if (!isGameStarted) {
		return;
	}
	var pipe = new Pipe();
	pipe.x = 2048 + 100;
	// Center pipes horizontally more by starting them closer to center
	pipe.x = 2048 + 50;
	// Random gap position between 30% and 70% of screen height
	var gapPosition = Math.random() * (2732 * 0.4) + 2732 * 0.3;
	var gapSize = 400; // Increased gap size for better playability with larger pipes
	pipe.setGap(gapPosition, gapSize);
	pipes.push(pipe);
	game.addChild(pipe);
}
// Start game
function startGame() {
	if (isGameStarted) {
		return;
	}
	isGameStarted = true;
	score = 0;
	scoreTxt.setText(score);
	// Clear any existing pipes
	for (var i = pipes.length - 1; i >= 0; i--) {
		pipes[i].destroy();
	}
	pipes = [];
	// Reset bird position
	if (bird) {
		bird.destroy();
	}
	initBird();
	// Start spawning pipes with increased interval for better spacing
	spawnInterval = LK.setInterval(spawnPipe, 2500);
	// Play background music
	LK.playMusic('bgMusic');
}
// Initialize game
initBird();
highScoreTxt.setText('Best: ' + highScore);
// Game input
game.down = function (x, y, obj) {
	if (!isGameStarted) {
		startGame();
	}
	if (bird && !bird.isDead) {
		bird.flap();
	}
};
// Main game update
game.update = function () {
	if (!isGameStarted) {
		return;
	}
	// Update all pipes
	for (var i = pipes.length - 1; i >= 0; i--) {
		var pipe = pipes[i];
		// Check for scoring (when bird passes pipe)
		if (!pipe.scored && bird && bird.x > pipe.x) {
			pipe.scored = true;
			score += 1;
			scoreTxt.setText(score);
			LK.setScore(score);
			LK.getSound('score').play();
			// Update high score if needed
			if (score > highScore) {
				highScore = score;
				storage.highScore = highScore;
				highScoreTxt.setText('Best: ' + highScore);
			}
		}
		// Check for collision with bird
		if (bird && !bird.isDead) {
			// Get pipe children for collision checks
			var pipeChildren = pipe.children;
			for (var j = 0; j < pipeChildren.length; j++) {
				if (bird.intersects(pipeChildren[j])) {
					bird.die();
					LK.showGameOver();
					break;
				}
			}
		}
		// Remove pipe if it's off screen
		if (pipe.x < -200) {
			pipe.destroy();
			pipes.splice(i, 1);
		}
	}
};