/**** 
* 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.speed = 26;
	self.targetX = 0;
	self.targetY = 0;
	self.directionX = 0;
	self.directionY = 0;
	self.update = function () {
		self.x += self.directionX * self.speed;
		self.y += self.directionY * self.speed;
	};
	return self;
});
var Note = Container.expand(function () {
	var self = Container.call(this);
	var noteGraphics = self.attachAsset('note', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.lane = 0;
	self.hasTriggered = false;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Add floating gun
	var gun = self.attachAsset('gun', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 0,
		y: -50
	});
	self.gun = gun;
	// Method to rotate gun towards target with smooth animation
	self.aimGunAt = function (targetX, targetY) {
		var dx = targetX - self.x;
		var dy = targetY - (self.y - 50); // Account for gun offset
		var targetRotation = Math.atan2(dy, dx);
		// Smooth rotation animation
		tween(self.gun, {
			rotation: targetRotation
		}, {
			duration: 150,
			easing: tween.easeOut
		});
	};
	return self;
});
var TargetBox = Container.expand(function () {
	var self = Container.call(this);
	var targetGraphics = self.attachAsset('targetBox', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lane = 0;
	self.isActive = false;
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0xF0F8FF
});

/**** 
* Game Code
****/ 
// Game variables
var player;
var bullets = [];
var notes = [];
var targetBoxes = [];
var staffLines = [];
var score = 0;
var mouseX = 1024;
var noteSpawnTimer = 0;
var noteSpawnInterval = 90; // frames between note spawns
// Setup staff lines
var staffY = 400;
var staffSpacing = 80;
for (var i = 0; i < 5; i++) {
	var staffLine = game.addChild(LK.getAsset('staffLine', {
		anchorX: 0,
		anchorY: 0.5,
		x: 0,
		y: staffY + i * staffSpacing
	}));
	staffLines.push(staffLine);
}
// Setup target boxes
var targetY = staffY + 4 * staffSpacing + 120;
for (var i = 0; i < 5; i++) {
	var targetBox = game.addChild(new TargetBox());
	targetBox.x = 1024;
	targetBox.y = targetY;
	targetBox.lane = i;
	targetBoxes.push(targetBox);
}
// Setup player
player = game.addChild(new Player());
player.x = 1024;
player.y = 2500;
// Setup score display
var scoreTxt = new Text2('Score: 0', {
	size: 80,
	fill: 0x000000
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Input handling
game.move = function (x, y, obj) {
	mouseX = x;
	player.x = x;
	// Continuously aim gun at mouse position
	player.aimGunAt(x, y);
};
game.down = function (x, y, obj) {
	// Aim gun at target position
	player.aimGunAt(x, y);
	// Create bullet from gun position
	var bullet = game.addChild(new Bullet());
	bullet.x = player.x;
	bullet.y = player.y - 50; // Spawn from gun position
	// Calculate direction to mouse position
	var dx = x - player.x;
	var dy = y - (player.y - 50); // Account for gun offset
	var distance = Math.sqrt(dx * dx + dy * dy);
	if (distance > 0) {
		bullet.directionX = dx / distance;
		bullet.directionY = dy / distance;
	}
	bullets.push(bullet);
};
// Spawn notes
function spawnNote() {
	var lane = Math.floor(Math.random() * 5);
	var note = game.addChild(new Note());
	note.x = 1024;
	note.y = staffY + lane * staffSpacing - 200;
	note.lane = lane;
	notes.push(note);
}
// Check if note is in timing window
function isNoteInTimingWindow(note, targetBox) {
	var noteBottom = note.y + 20;
	var targetTop = targetBox.y - 50;
	var targetBottom = targetBox.y + 50;
	return noteBottom >= targetTop && noteBottom <= targetBottom;
}
// Game update loop
game.update = function () {
	// Spawn notes
	noteSpawnTimer++;
	if (noteSpawnTimer >= noteSpawnInterval) {
		spawnNote();
		noteSpawnTimer = 0;
	}
	// Update and check bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		// Remove bullets that go off screen
		if (bullet.x < -50 || bullet.x > 2098 || bullet.y < -50 || bullet.y > 2782) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check collision with target boxes
		for (var j = 0; j < targetBoxes.length; j++) {
			var targetBox = targetBoxes[j];
			if (bullet.intersects(targetBox)) {
				// Check if there's a note in timing window for this lane
				var hitNote = null;
				for (var k = 0; k < notes.length; k++) {
					var note = notes[k];
					if (note.lane === targetBox.lane && !note.hasTriggered && isNoteInTimingWindow(note, targetBox)) {
						hitNote = note;
						break;
					}
				}
				if (hitNote) {
					// Perfect hit!
					score += 100;
					hitNote.hasTriggered = true;
					LK.effects.flashObject(targetBox, 0x00FF00, 500);
					LK.getSound('hit').play();
					// Remove the note
					hitNote.destroy();
					var noteIndex = notes.indexOf(hitNote);
					if (noteIndex > -1) {
						notes.splice(noteIndex, 1);
					}
				} else {
					// Miss - hit target but no note in timing
					score = Math.max(0, score - 25);
					LK.effects.flashObject(targetBox, 0xFF0000, 300);
					LK.getSound('miss').play();
				}
				// Remove bullet
				bullet.destroy();
				bullets.splice(i, 1);
				// Update score display
				scoreTxt.setText('Score: ' + score);
				LK.setScore(score);
				break;
			}
		}
	}
	// Update and check notes
	for (var i = notes.length - 1; i >= 0; i--) {
		var note = notes[i];
		// Remove notes that go off screen
		if (note.y > 2800) {
			if (!note.hasTriggered) {
				// Missed note penalty
				score = Math.max(0, score - 50);
				scoreTxt.setText('Score: ' + score);
				LK.setScore(score);
			}
			note.destroy();
			notes.splice(i, 1);
		}
	}
	// Increase difficulty over time
	if (LK.ticks % 1800 === 0) {
		// Every 30 seconds
		noteSpawnInterval = Math.max(30, noteSpawnInterval - 5);
		// Increase note speed slightly
		for (var i = 0; i < notes.length; i++) {
			notes[i].speed = Math.min(6, notes[i].speed + 0.1);
		}
	}
};

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