/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
// Balloon class
var Balloon = Container.expand(function () {
	var self = Container.call(this);
	// Balloon color options
	var colors = [0xff4d4d, 0x4db8ff, 0x4dff88, 0xffe14d, 0xff4df2, 0x9d4dff];
	// Random color
	var color = colors[Math.floor(Math.random() * colors.length)];
	// Random size
	var minSize = 120;
	var maxSize = 220;
	var size = minSize + Math.floor(Math.random() * (maxSize - minSize));
	// Attach balloon shape (ellipse)
	var balloonShape = self.attachAsset('balloon', {
		width: size,
		height: size * 1.2,
		color: color,
		shape: 'ellipse',
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Is this a special balloon?
	self.isSpecial = false;
	self.specialType = null;
	// 10% chance to be a special balloon
	if (Math.random() < 0.1) {
		self.isSpecial = true;
		// Randomly choose special type: 'score' or 'slow'
		self.specialType = Math.random() < 0.5 ? 'score' : 'slow';
		// Add a visual indicator (star or S)
		var specialTxt = new Text2(self.specialType === 'score' ? '★' : 'S', {
			size: size * 0.7,
			fill: self.specialType === 'score' ? "#fff700" : "#00eaff"
		});
		specialTxt.anchor.set(0.5, 0.5);
		self.addChild(specialTxt);
	}
	// Set initial speed (pixels per frame)
	self.baseSpeed = 6 + Math.random() * 3;
	self.speed = self.baseSpeed;
	// For touch detection
	self.interactive = true;
	// For popping animation
	self.isPopping = false;
	// Pop balloon
	self.pop = function () {
		if (self.isPopping) return;
		self.isPopping = true;
		// Animate: scale up and fade out
		tween(self, {
			scaleX: 1.5,
			scaleY: 1.5,
			alpha: 0
		}, {
			duration: 250,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				self.destroy();
			}
		});
	};
	// Update method called every tick
	self.update = function () {
		if (self.isPopping) return;
		self.y -= self.speed;
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Game variables
var balloons = [];
var spawnInterval = 36; // frames between spawns (~0.6s at 60fps)
var lastSpawnTick = 0;
var gameDuration = 30 * 60; // 30 seconds * 60fps
var timeLeft = gameDuration;
var score = 0;
var slowEffectTicks = 0;
// Score text
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Timer text
var timerTxt = new Text2('30', {
	size: 90,
	fill: 0xFFFFFF
});
timerTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(timerTxt);
timerTxt.y = 120;
// Helper: spawn a balloon at random x
function spawnBalloon() {
	var balloon = new Balloon();
	// Random x, avoid leftmost 100px (menu) and rightmost 100px
	var margin = 140;
	var x = margin + Math.random() * (2048 - 2 * margin);
	balloon.x = x;
	// Start just below the bottom
	balloon.y = 2732 + balloon.height / 2;
	// Randomize z-order a bit
	game.addChild(balloon);
	balloons.push(balloon);
}
// Helper: handle popping a balloon
function handlePop(balloon) {
	if (balloon.isPopping) return;
	// Score
	var addScore = 1;
	if (balloon.isSpecial) {
		if (balloon.specialType === 'score') {
			addScore = 5;
			LK.effects.flashObject(balloon, 0xfff700, 400);
		} else if (balloon.specialType === 'slow') {
			slowEffectTicks = 180; // 3 seconds slow
			LK.effects.flashScreen(0x00eaff, 300);
		}
	}
	score += addScore;
	LK.setScore(score);
	scoreTxt.setText(score);
	balloon.pop();
}
// Touch/drag handling
var dragBalloon = null;
function getBalloonAt(x, y) {
	for (var i = balloons.length - 1; i >= 0; i--) {
		var b = balloons[i];
		if (b.isPopping) continue;
		// Simple hit test: distance to center < radius
		var dx = x - b.x;
		var dy = y - b.y;
		var rx = b.width / 2;
		var ry = b.height / 2;
		if (dx * dx / (rx * rx) + dy * dy / (ry * ry) <= 1) {
			return b;
		}
	}
	return null;
}
// Touch down: pop balloon if touched
game.down = function (x, y, obj) {
	var b = getBalloonAt(x, y);
	if (b) {
		handlePop(b);
		dragBalloon = b;
	}
};
// Touch move: allow dragging finger to pop more balloons
game.move = function (x, y, obj) {
	var b = getBalloonAt(x, y);
	if (b && b !== dragBalloon) {
		handlePop(b);
		dragBalloon = b;
	}
};
// Touch up: reset drag
game.up = function (x, y, obj) {
	dragBalloon = null;
};
// Main update loop
game.update = function () {
	// Spawn balloons
	if (LK.ticks - lastSpawnTick >= spawnInterval) {
		spawnBalloon();
		lastSpawnTick = LK.ticks;
	}
	// Update slow effect
	var speedFactor = 1;
	if (slowEffectTicks > 0) {
		speedFactor = 0.4;
		slowEffectTicks--;
	}
	// Update balloons
	for (var i = balloons.length - 1; i >= 0; i--) {
		var b = balloons[i];
		if (b.isPopping) continue;
		b.speed = b.baseSpeed * speedFactor;
		b.update();
		// Remove if off top
		if (b.y + b.height / 2 < 0) {
			b.pop();
			balloons.splice(i, 1);
		}
	}
	// Remove destroyed balloons from array
	for (var i = balloons.length - 1; i >= 0; i--) {
		if (balloons[i].destroyed) {
			balloons.splice(i, 1);
		}
	}
	// Update timer
	timeLeft--;
	var seconds = Math.ceil(timeLeft / 60);
	timerTxt.setText(seconds);
	// End game if time is up
	if (timeLeft <= 0) {
		LK.showGameOver();
	}
};
// Initialize score and timer
score = 0;
LK.setScore(score);
scoreTxt.setText(score);
timerTxt.setText(Math.ceil(gameDuration / 60));