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

/**** 
* Classes
****/ 
var PopStar = Container.expand(function () {
	var self = Container.call(this);
	var popstarGraphics = self.attachAsset('popstar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.targetX = 0;
	self.targetY = 0;
	self.isDead = false;
	self.hitWindow = 100; // pixels around popstar where tap is effective
	self.setTarget = function (x, y) {
		self.targetX = x;
		self.targetY = y;
	};
	self.update = function () {
		if (self.isDead) return;
		// Move toward target (rapper)
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 5) {
			self.x += dx / distance * self.speed;
			self.y += dy / distance * self.speed;
		}
	};
	self.die = function () {
		self.isDead = true;
		// Create hit effect
		var effect = game.addChild(LK.getAsset('hitEffect', {
			anchorX: 0.5,
			anchorY: 0.5
		}));
		effect.x = self.x;
		effect.y = self.y;
		// Animate effect
		tween(effect, {
			scaleX: 2,
			scaleY: 2,
			alpha: 0
		}, {
			duration: 300,
			onFinish: function onFinish() {
				effect.destroy();
			}
		});
	};
	return self;
});
var Rapper = Container.expand(function () {
	var self = Container.call(this);
	var rapperGraphics = self.attachAsset('rapper', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 3;
	self.maxHealth = 3;
	self.isInvulnerable = false;
	self.takeDamage = function () {
		if (self.isInvulnerable) return;
		self.health--;
		self.isInvulnerable = true;
		// Flash effect when hit
		LK.effects.flashObject(self, 0xFF0000, 500);
		LK.getSound('damage').play();
		// Invulnerability period
		LK.setTimeout(function () {
			self.isInvulnerable = false;
		}, 1000);
		if (self.health <= 0) {
			LK.showGameOver();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1a1a2e
});

/**** 
* Game Code
****/ 
game.setBackgroundColor(0x16213e);
// Game variables
var rapper = null;
var popstars = [];
var dragNode = null;
var score = 0;
var combo = 0;
var maxCombo = 0;
var spawnTimer = 0;
var spawnDelay = 120; // frames between spawns
var difficultyTimer = 0;
// UI elements
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0);
scoreTxt.x = 150;
scoreTxt.y = 50;
LK.gui.topLeft.addChild(scoreTxt);
var comboTxt = new Text2('Combo: 0', {
	size: 50,
	fill: 0xFFD700
});
comboTxt.anchor.set(0.5, 0);
comboTxt.x = 0;
comboTxt.y = 50;
LK.gui.top.addChild(comboTxt);
var healthTxt = new Text2('Health: 3', {
	size: 50,
	fill: 0xFF6B6B
});
healthTxt.anchor.set(1, 0);
healthTxt.x = -150;
healthTxt.y = 50;
LK.gui.topRight.addChild(healthTxt);
// Initialize rapper
rapper = game.addChild(new Rapper());
rapper.x = 1024;
rapper.y = 1366;
// Spawn popstar function
function spawnPopstar() {
	var popstar = new PopStar();
	// Random spawn position on edges
	var side = Math.floor(Math.random() * 4);
	switch (side) {
		case 0:
			// Top
			popstar.x = Math.random() * 2048;
			popstar.y = -50;
			break;
		case 1:
			// Right
			popstar.x = 2098;
			popstar.y = Math.random() * 2732;
			break;
		case 2:
			// Bottom
			popstar.x = Math.random() * 2048;
			popstar.y = 2782;
			break;
		case 3:
			// Left
			popstar.x = -50;
			popstar.y = Math.random() * 2732;
			break;
	}
	popstar.setTarget(rapper.x, rapper.y);
	var speedBonusLevel = Math.floor(score / 200);
	var speedBonus = speedBonusLevel * 0.25;
	var baseSpeed = 1.5 + speedBonus;
	popstar.speed = baseSpeed + Math.random() * 1.5;
	popstars.push(popstar);
	game.addChild(popstar);
}
// Handle touch input
function handleMove(x, y, obj) {
	if (dragNode) {
		// Keep rapper within bounds
		dragNode.x = Math.max(60, Math.min(1988, x));
		dragNode.y = Math.max(60, Math.min(2672, y));
		// Update all popstar targets
		for (var i = 0; i < popstars.length; i++) {
			popstars[i].setTarget(dragNode.x, dragNode.y);
		}
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	// Check if tapping near any popstar
	var hitAny = false;
	for (var i = popstars.length - 1; i >= 0; i--) {
		var popstar = popstars[i];
		if (popstar.isDead) continue;
		var dx = x - popstar.x;
		var dy = y - popstar.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance <= popstar.hitWindow) {
			// Hit popstar
			popstar.die();
			popstars.splice(i, 1);
			popstar.destroy();
			// Update score and combo
			score += 10 + combo * 2;
			combo++;
			maxCombo = Math.max(maxCombo, combo);
			// Play sound
			if (combo > 1) {
				LK.getSound('combo').play();
			} else {
				LK.getSound('hit').play();
			}
			hitAny = true;
			break;
		}
	}
	if (!hitAny) {
		// Missed hit, reset combo
		combo = 0;
	}
	// Start dragging rapper
	dragNode = rapper;
	handleMove(x, y, obj);
};
game.up = function (x, y, obj) {
	dragNode = null;
};
// Main game loop
game.update = function () {
	// Update UI
	scoreTxt.setText('Score: ' + score);
	comboTxt.setText('Combo: ' + combo);
	healthTxt.setText('Health: ' + rapper.health);
	// Spawn popstars
	spawnTimer++;
	if (spawnTimer >= spawnDelay) {
		spawnPopstar();
		spawnTimer = 0;
	}
	// Increase pop star speed every 200 score points
	var speedBonusLevel = Math.floor(score / 200);
	var expectedSpeedBonus = speedBonusLevel * 0.25;
	// Increase all popstar speeds every 100 score points by 0.5
	var popstarSpeedBonusLevel = Math.floor(score / 100);
	var popstarSpeedBonus = popstarSpeedBonusLevel * 0.5;
	// Apply speed bonus to all existing popstars
	for (var k = 0; k < popstars.length; k++) {
		var currentPopstar = popstars[k];
		if (!currentPopstar.isDead) {
			var baseSpeed = 1.5 + Math.floor(score / 200) * 0.25;
			currentPopstar.speed = baseSpeed + Math.random() * 1.5 + popstarSpeedBonus;
		}
	}
	// Update popstars
	for (var i = popstars.length - 1; i >= 0; i--) {
		var popstar = popstars[i];
		// Check collision with rapper
		if (!popstar.isDead && rapper.intersects(popstar)) {
			rapper.takeDamage();
			// Health is reduced, combo remains unchanged
			popstar.die();
			popstars.splice(i, 1);
			popstar.destroy();
			continue;
		}
		// Check collision with other popstars
		if (!popstar.isDead) {
			for (var j = i - 1; j >= 0; j--) {
				var otherPopstar = popstars[j];
				if (!otherPopstar.isDead && popstar.intersects(otherPopstar)) {
					// Both popstars collide and are destroyed
					popstar.die();
					otherPopstar.die();
					// Award score for both destroyed popstars
					score += 15; // Bonus points for collision
					combo++;
					// Play hit sound
					LK.getSound('hit').play();
					// Remove both popstars
					popstars.splice(i, 1);
					popstar.destroy();
					popstars.splice(j, 1);
					otherPopstar.destroy();
					// Adjust index since we removed two elements
					i--; // Adjust for the removed element at index j
					break; // Exit inner loop since this popstar is destroyed
				}
			}
		}
		// Remove popstars that are too far off screen
		if (popstar.x < -200 || popstar.x > 2248 || popstar.y < -200 || popstar.y > 2932) {
			popstars.splice(i, 1);
			popstar.destroy();
		}
	}
	// Update score for survival
	if (LK.ticks % 60 === 0) {
		score += 1;
	}
	// Add health every 100 score points
	var currentHealthBonus = Math.floor(score / 100);
	var expectedHealth = Math.min(3 + currentHealthBonus, rapper.maxHealth + currentHealthBonus);
	if (rapper.health < expectedHealth) {
		rapper.health = expectedHealth;
		rapper.maxHealth = Math.max(rapper.maxHealth, expectedHealth);
	}
	// Update LK score
	LK.setScore(score);
};
// Start background music
LK.playMusic('bgmusic');