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

/**** 
* Classes
****/ 
var Circle = Container.expand(function () {
	var self = Container.call(this);
	var circleGraphics = self.attachAsset('circle', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.1,
		scaleY: 0.1
	});
	self.maxScale = 3.0;
	self.isExploding = false;
	self.startTime = LK.ticks;
	self.baseSpeed = 0.02;
	// Start the expanding animation
	self.startExpanding = function () {
		var speedMultiplier = 1 + LK.getScore() * 0.1;
		var duration = Math.max(1000, 2000 - LK.getScore() * 50);
		tween(circleGraphics, {
			scaleX: self.maxScale,
			scaleY: self.maxScale
		}, {
			duration: duration / speedMultiplier,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				if (!self.isExploding) {
					self.explode();
				}
			}
		});
	};
	self.explode = function () {
		if (self.isExploding) return;
		self.isExploding = true;
		LK.getSound('explosion').play();
		LK.effects.flashScreen(0xff0000, 300);
		LK.showGameOver();
	};
	self.pop = function () {
		if (self.isExploding) return;
		self.isExploding = true;
		tween.stop(circleGraphics);
		LK.getSound('pop').play();
		LK.setScore(LK.getScore() + 1);
		// Scale down animation before removal
		tween(circleGraphics, {
			scaleX: 0,
			scaleY: 0,
			alpha: 0
		}, {
			duration: 150,
			easing: tween.easeIn,
			onFinish: function onFinish() {
				var index = circles.indexOf(self);
				if (index > -1) {
					circles.splice(index, 1);
					self.destroy();
				}
			}
		});
	};
	self.down = function (x, y, obj) {
		self.pop();
	};
	return self;
});

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

/**** 
* Game Code
****/ 
var circles = [];
var spawnTimer = 0;
var baseSpawnRate = 120; // frames between spawns
// Create score display
var scoreTxt = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Position score text away from top-left menu area
scoreTxt.y = 50;
function spawnCircle() {
	var circle = new Circle();
	// Random position with margins to keep circles fully visible
	var margin = 100;
	circle.x = margin + Math.random() * (2048 - 2 * margin);
	circle.y = margin + Math.random() * (2732 - 2 * margin);
	circles.push(circle);
	game.addChild(circle);
	circle.startExpanding();
}
game.update = function () {
	// Update score display
	scoreTxt.setText('Score: ' + LK.getScore());
	// Spawn new circles with increasing frequency
	var currentSpawnRate = Math.max(30, baseSpawnRate - LK.getScore() * 2);
	spawnTimer++;
	if (spawnTimer >= currentSpawnRate) {
		spawnCircle();
		spawnTimer = 0;
	}
	// Spawn initial circle if none exist
	if (circles.length === 0 && LK.ticks > 60) {
		spawnCircle();
	}
};