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

/**** 
* Classes
****/ 
var Monster = Container.expand(function () {
	var self = Container.call(this);
	var monsterGraphics = self.attachAsset('monster', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 1;
	self.speed = 2;
	self.damage = 10;
	self.targetX = 0;
	self.targetY = 0;
	self.update = function () {
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			self.x += dx / distance * self.speed;
			self.y += dy / distance * self.speed;
		}
	};
	return self;
});
var Ship = Container.expand(function () {
	var self = Container.call(this);
	var shipGraphics = self.attachAsset('ship', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 100;
	self.maxHealth = 100;
	return self;
});
var Wave = Container.expand(function () {
	var self = Container.call(this);
	var waveGraphics = self.attachAsset('wave', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.damage = 1;
	self.maxRadius = 200;
	self.expansionSpeed = 8;
	self.currentRadius = 20;
	self.lifetime = 0;
	self.maxLifetime = 30;
	waveGraphics.alpha = 0.7;
	self.update = function () {
		self.lifetime++;
		if (self.currentRadius < self.maxRadius) {
			self.currentRadius += self.expansionSpeed;
			var scale = self.currentRadius / 20;
			waveGraphics.scaleX = scale;
			waveGraphics.scaleY = scale;
		}
		var alphaFactor = 1 - self.lifetime / self.maxLifetime;
		waveGraphics.alpha = Math.max(0, alphaFactor * 0.7);
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x001133
});

/**** 
* Game Code
****/ 
var ship = game.addChild(new Ship());
ship.x = 2048 / 2;
ship.y = 2732 / 2;
var monsters = [];
var waves = [];
var monsterSpawnTimer = 0;
var monsterSpawnRate = 120;
var difficultyTimer = 0;
var gameStarted = true;
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
function spawnMonster() {
	var monster = new Monster();
	var side = Math.floor(Math.random() * 4);
	switch (side) {
		case 0:
			// Top
			monster.x = Math.random() * 2048;
			monster.y = -30;
			break;
		case 1:
			// Right
			monster.x = 2048 + 30;
			monster.y = Math.random() * 2732;
			break;
		case 2:
			// Bottom
			monster.x = Math.random() * 2048;
			monster.y = 2732 + 30;
			break;
		case 3:
			// Left
			monster.x = -30;
			monster.y = Math.random() * 2732;
			break;
	}
	monster.targetX = ship.x;
	monster.targetY = ship.y;
	monsters.push(monster);
	game.addChild(monster);
}
function createWave(x, y) {
	var wave = new Wave();
	wave.x = x;
	wave.y = y;
	waves.push(wave);
	game.addChild(wave);
	LK.getSound('waveSound').play();
}
function checkWaveMonsterCollisions() {
	for (var w = waves.length - 1; w >= 0; w--) {
		var wave = waves[w];
		for (var m = monsters.length - 1; m >= 0; m--) {
			var monster = monsters[m];
			var dx = wave.x - monster.x;
			var dy = wave.y - monster.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance <= wave.currentRadius) {
				monster.health -= wave.damage;
				if (monster.health <= 0) {
					LK.setScore(LK.getScore() + 10);
					scoreTxt.setText('Score: ' + LK.getScore());
					LK.getSound('monsterHit').play();
					monster.destroy();
					monsters.splice(m, 1);
				}
			}
		}
	}
}
function checkMonsterShipCollisions() {
	for (var m = monsters.length - 1; m >= 0; m--) {
		var monster = monsters[m];
		if (ship.intersects(monster)) {
			ship.health -= monster.damage;
			LK.getSound('shipHit').play();
			LK.effects.flashScreen(0xff0000, 500);
			monster.destroy();
			monsters.splice(m, 1);
			if (ship.health <= 0) {
				LK.showGameOver();
				return;
			}
		}
	}
}
game.down = function (x, y, obj) {
	if (gameStarted) {
		createWave(x, y);
	}
};
game.update = function () {
	if (!gameStarted) return;
	difficultyTimer++;
	monsterSpawnTimer++;
	// Increase difficulty over time
	if (difficultyTimer % 1800 === 0) {
		// Every 30 seconds
		monsterSpawnRate = Math.max(60, monsterSpawnRate - 10);
	}
	// Spawn monsters
	if (monsterSpawnTimer >= monsterSpawnRate) {
		spawnMonster();
		monsterSpawnTimer = 0;
	}
	// Update and cleanup waves
	for (var w = waves.length - 1; w >= 0; w--) {
		var wave = waves[w];
		if (wave.lifetime >= wave.maxLifetime) {
			wave.destroy();
			waves.splice(w, 1);
		}
	}
	// Update monster targets to current ship position
	for (var m = 0; m < monsters.length; m++) {
		var monster = monsters[m];
		monster.targetX = ship.x;
		monster.targetY = ship.y;
	}
	// Check collisions
	checkWaveMonsterCollisions();
	checkMonsterShipCollisions();
	// Remove off-screen monsters (safety cleanup)
	for (var m = monsters.length - 1; m >= 0; m--) {
		var monster = monsters[m];
		if (monster.x < -100 || monster.x > 2148 || monster.y < -100 || monster.y > 2832) {
			monster.destroy();
			monsters.splice(m, 1);
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -166,9 +166,9 @@
 	}
 }
 game.down = function (x, y, obj) {
 	if (gameStarted) {
-		createWave(ship.x, ship.y);
+		createWave(x, y);
 	}
 };
 game.update = function () {
 	if (!gameStarted) return;