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

/**** 
* Classes
****/ 
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedX = 0;
	self.speedY = 0;
	self.lifetime = 0;
	self.maxLifetime = 300; // 5 seconds at 60fps
	self.update = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		self.lifetime++;
		// Remove if too old or off screen
		if (self.lifetime > self.maxLifetime || self.x < -100 || self.x > 2148 || self.y < -100 || self.y > 2832) {
			self.markForDestroy = true;
		}
	};
	return self;
});
var Heart = Container.expand(function () {
	var self = Container.call(this);
	var heartGraphics = self.attachAsset('heart', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Rotate to make it look like a heart
	heartGraphics.rotation = Math.PI / 4;
	self.speed = 8;
	self.isDragging = false;
	return self;
});
var MagicBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('magicBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedX = 0;
	self.speedY = 0;
	self.lifetime = 0;
	self.maxLifetime = 360;
	self.rotationSpeed = 0.1;
	self.update = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		self.lifetime++;
		// Rotate magic bullets
		bulletGraphics.rotation += self.rotationSpeed;
		// Slight homing behavior towards center
		var centerX = 1024;
		var centerY = 1366;
		var dx = centerX - self.x;
		var dy = centerY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 50) {
			self.speedX += dx / distance * 0.05;
			self.speedY += dy / distance * 0.05;
		}
		// Cap speed
		var speed = Math.sqrt(self.speedX * self.speedX + self.speedY * self.speedY);
		if (speed > 6) {
			self.speedX = self.speedX / speed * 6;
			self.speedY = self.speedY / speed * 6;
		}
		if (self.lifetime > self.maxLifetime || self.x < -100 || self.x > 2148 || self.y < -100 || self.y > 2832) {
			self.markForDestroy = true;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Game state variables
var heart;
var bullets = [];
var magicBullets = [];
var battleBox;
var isDragging = false;
var dragOffsetX = 0;
var dragOffsetY = 0;
var waveTimer = 0;
var currentWave = 1;
var waveSpawnTimer = 0;
var gameTime = 0;
// Create UI elements
var scoreText = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
var waveText = new Text2('Wave 1', {
	size: 60,
	fill: 0xFFFF00
});
waveText.anchor.set(0, 0);
waveText.x = 50;
waveText.y = 200;
LK.gui.topLeft.addChild(waveText);
// Create battle box (play area boundary)
battleBox = game.addChild(LK.getAsset('battleBox', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 1366,
	alpha: 0.1
}));
// Create heart
heart = game.addChild(new Heart());
heart.x = 1024;
heart.y = 1366;
// Touch/drag handlers
game.down = function (x, y, obj) {
	// Allow dragging from anywhere on screen for mobile
	isDragging = true;
	dragOffsetX = x - heart.x;
	dragOffsetY = y - heart.y;
};
game.move = function (x, y, obj) {
	if (isDragging) {
		var newX = x - dragOffsetX;
		var newY = y - dragOffsetY;
		// Constrain to battle box
		var boxLeft = battleBox.x - battleBox.width / 2 + 30;
		var boxRight = battleBox.x + battleBox.width / 2 - 30;
		var boxTop = battleBox.y - battleBox.height / 2 + 30;
		var boxBottom = battleBox.y + battleBox.height / 2 - 30;
		heart.x = Math.max(boxLeft, Math.min(boxRight, newX));
		heart.y = Math.max(boxTop, Math.min(boxBottom, newY));
	}
};
game.up = function (x, y, obj) {
	isDragging = false;
};
// Spawn patterns
function spawnStraightBullets() {
	var numBullets = 4 + Math.floor(currentWave / 2);
	var side = Math.floor(Math.random() * 4); // 0=top, 1=right, 2=bottom, 3=left
	for (var i = 0; i < numBullets; i++) {
		var bullet = new Bullet();
		var speed = 3 + currentWave * 0.5;
		switch (side) {
			case 0:
				// Top
				bullet.x = 324 + 1400 / numBullets * i;
				bullet.y = 566;
				bullet.speedY = speed;
				break;
			case 1:
				// Right
				bullet.x = 1724;
				bullet.y = 666 + 1400 / numBullets * i;
				bullet.speedX = -speed;
				break;
			case 2:
				// Bottom
				bullet.x = 324 + 1400 / numBullets * i;
				bullet.y = 2066;
				bullet.speedY = -speed;
				break;
			case 3:
				// Left
				bullet.x = 324;
				bullet.y = 666 + 1400 / numBullets * i;
				bullet.speedX = speed;
				break;
		}
		bullets.push(bullet);
		game.addChild(bullet);
	}
}
function spawnConvergingBullets() {
	var numBullets = 8 + currentWave;
	var centerX = heart.x;
	var centerY = heart.y;
	for (var i = 0; i < numBullets; i++) {
		var angle = Math.PI * 2 * i / numBullets;
		var distance = 800;
		var bullet = new Bullet();
		bullet.x = centerX + Math.cos(angle) * distance;
		bullet.y = centerY + Math.sin(angle) * distance;
		var speed = 2 + currentWave * 0.3;
		bullet.speedX = -Math.cos(angle) * speed;
		bullet.speedY = -Math.sin(angle) * speed;
		bullets.push(bullet);
		game.addChild(bullet);
	}
}
function spawnMagicBullets() {
	var numBullets = 3 + Math.floor(currentWave / 3);
	for (var i = 0; i < numBullets; i++) {
		var bullet = new MagicBullet();
		// Spawn from random edge
		var edge = Math.floor(Math.random() * 4);
		switch (edge) {
			case 0:
				// Top
				bullet.x = 324 + Math.random() * 1400;
				bullet.y = 466;
				break;
			case 1:
				// Right
				bullet.x = 1824;
				bullet.y = 566 + Math.random() * 1400;
				break;
			case 2:
				// Bottom
				bullet.x = 324 + Math.random() * 1400;
				bullet.y = 2166;
				break;
			case 3:
				// Left
				bullet.x = 224;
				bullet.y = 566 + Math.random() * 1400;
				break;
		}
		// Initial speed towards center with some randomness
		var dx = 1024 - bullet.x;
		var dy = 1366 - bullet.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		var speed = 1.5 + currentWave * 0.2;
		bullet.speedX = dx / distance * speed + (Math.random() - 0.5) * 2;
		bullet.speedY = dy / distance * speed + (Math.random() - 0.5) * 2;
		magicBullets.push(bullet);
		game.addChild(bullet);
	}
}
// Main game update
game.update = function () {
	gameTime++;
	waveTimer++;
	waveSpawnTimer++;
	// Update score
	LK.setScore(Math.floor(gameTime / 60));
	scoreText.setText('Score: ' + LK.getScore());
	// Wave progression
	if (waveTimer > 600) {
		// 10 seconds per wave
		currentWave++;
		waveTimer = 0;
		waveText.setText('Wave ' + currentWave);
		// Flash effect for new wave
		LK.effects.flashScreen(0x444444, 500);
	}
	// Spawn bullets based on wave and timing
	if (waveSpawnTimer > 120 - currentWave * 5) {
		// Faster spawning each wave
		waveSpawnTimer = 0;
		var pattern = Math.floor(Math.random() * 3);
		if (currentWave < 3) pattern = 0; // Only straight bullets early
		switch (pattern) {
			case 0:
				spawnStraightBullets();
				break;
			case 1:
				spawnConvergingBullets();
				break;
			case 2:
				spawnMagicBullets();
				break;
		}
	}
	// Update and check bullet collisions
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		if (bullet.markForDestroy) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Collision with heart
		if (bullet.intersects(heart)) {
			LK.getSound('hit').play();
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
	}
	// Update and check magic bullet collisions
	for (var j = magicBullets.length - 1; j >= 0; j--) {
		var magicBullet = magicBullets[j];
		if (magicBullet.markForDestroy) {
			magicBullet.destroy();
			magicBullets.splice(j, 1);
			continue;
		}
		// Collision with heart
		if (magicBullet.intersects(heart)) {
			LK.getSound('hit').play();
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
	}
	// Play dodge sound occasionally for close calls
	if (gameTime % 180 === 0) {
		var closeCalls = 0;
		for (var k = 0; k < bullets.length; k++) {
			var dist = Math.sqrt(Math.pow(bullets[k].x - heart.x, 2) + Math.pow(bullets[k].y - heart.y, 2));
			if (dist < 100) closeCalls++;
		}
		if (closeCalls > 2) {
			LK.getSound('dodge').play();
		}
	}
};
// Start background music
LK.playMusic('tension');

===================================================================
--- original.js
+++ change.js