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

/**** 
* Classes
****/ 
// Note class for falling notes
var Note = Container.expand(function () {
	var self = Container.call(this);
	// Lane index (0-3)
	self.lane = 0;
	self.hit = false;
	self.missed = false;
	self.speed = 0; // pixels per tick
	self.time = 0; // time (in ticks) when note should reach the target
	self.spawned = false;
	// Attach correct note asset based on lane
	self.setLane = function (laneIdx) {
		self.lane = laneIdx;
		var assetId = 'note' + (laneIdx + 1);
		var noteAsset = self.attachAsset(assetId, {
			anchorX: 0.5,
			anchorY: 0.5
		});
	};
	// Called every tick
	self.update = function () {
		if (!self.spawned) return;
		self.y += self.speed;
	};
	// Called when note is hit
	self.onHit = function () {
		if (self.hit || self.missed) return;
		self.hit = true;
		// Animate note
		tween(self, {
			alpha: 0,
			scaleX: 1.5,
			scaleY: 1.5
		}, {
			duration: 150,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				self.destroy();
			}
		});
	};
	// Called when note is missed
	self.onMiss = function () {
		if (self.hit || self.missed) return;
		self.missed = true;
		LK.getSound('miss').play({
			fade: {
				start: 1,
				end: 0,
				duration: 1000
			}
		});
		tween(self, {
			alpha: 0
		}, {
			duration: 200,
			onFinish: function onFinish() {
				self.destroy();
			}
		});
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x181818
});

/**** 
* Game Code
****/ 
// --- Game Constants ---
// 4 note lanes, each with a different color for clarity
var NUM_LANES = 4;
var LANE_WIDTH = 200;
var LANE_SPACING = 40;
var NOTE_WIDTH = 180;
var NOTE_HEIGHT = 80;
var TARGET_HEIGHT = 220; // Increased from 120 to 220 for much larger tap area
var LANE_HEIGHT = 2200;
var GAME_WIDTH = 2048;
var GAME_HEIGHT = 2732;
var LANE_TOTAL_WIDTH = NUM_LANES * LANE_WIDTH + (NUM_LANES - 1) * LANE_SPACING;
var LANE_START_X = (GAME_WIDTH - LANE_TOTAL_WIDTH) / 2 + LANE_WIDTH / 2;
var TARGET_Y = GAME_HEIGHT - 220; // Target zone Y position
// --- Game State ---
var notes = []; // All active notes
var noteIndex = 0; // Index of next note to spawn
var songTicks = 0; // Ticks since song start
var score = 0;
var combo = 0;
var maxCombo = 0;
var misses = 0;
var maxMisses = 10;
var songEnded = false;
var songStarted = false;
var lastTick = 0;
// --- UI Elements ---
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var comboTxt = new Text2('', {
	size: 70,
	fill: 0xFFE066
});
comboTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(comboTxt);
comboTxt.y = 130;
var missTxt = new Text2('', {
	size: 70,
	fill: 0xFF6666
});
missTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(missTxt);
missTxt.y = 210;
// --- Lanes and Targets ---
var lanes = [];
var targets = [];
for (var i = 0; i < NUM_LANES; i++) {
	// Lane background
	var laneX = LANE_START_X + i * (LANE_WIDTH + LANE_SPACING);
	var lane = LK.getAsset('lane', {
		anchorX: 0.5,
		anchorY: 0,
		x: laneX,
		y: 0,
		width: LANE_WIDTH,
		height: LANE_HEIGHT
	});
	game.addChild(lane);
	lanes.push(lane);
	// Target zone
	var target = LK.getAsset('target', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: laneX,
		y: TARGET_Y,
		width: LANE_WIDTH,
		height: TARGET_HEIGHT // Now uses the updated, much larger TARGET_HEIGHT
	});
	game.addChild(target);
	targets.push(target);
}
// --- Song Data (Random Infinite Notes) ---
// Each note: {lane: 0-3, time: tick when note should reach target}
// We'll generate notes on the fly, at random lanes and random intervals
var bpm = 60;
var ticksPerBeat = 60 * 60 / bpm; // 60fps
var NOTE_TRAVEL_TICKS = 180; // 3 seconds at 60fps
// Infinite random note generator state
var nextNoteTick = 60; // When the next note should appear (in songTicks)
function getRandomLane() {
	return Math.floor(Math.random() * NUM_LANES);
}
function getRandomInterval() {
	// Random interval between notes: 0.5x to 1.5x of ticksPerBeat
	return Math.floor(ticksPerBeat * (0.5 + Math.random()));
}
// --- Helper Functions ---
function getLaneX(laneIdx) {
	return LANE_START_X + laneIdx * (LANE_WIDTH + LANE_SPACING);
}
// --- Game Logic ---
// Start song/music
function startSong() {
	if (songStarted) return;
	songStarted = true;
	LK.playMusic('song1');
	songTicks = 0;
	noteIndex = 0;
	score = 0;
	combo = 0;
	maxCombo = 0;
	misses = 0;
	songEnded = false;
	scoreTxt.setText('0');
	comboTxt.setText('');
	missTxt.setText('');
	notes.length = 0;
}
// End song/game
function endSong(win) {
	if (songEnded) return;
	songEnded = true;
	LK.stopMusic();
	// No win or game over, just stop music and mark as ended
}
// --- Input Handling ---
game.down = function (x, y, obj) {
	// Only allow input if song is running
	if (!songStarted || songEnded) return;
	// Find which lane was tapped
	for (var i = 0; i < NUM_LANES; i++) {
		var laneX = getLaneX(i);
		var minX = laneX - LANE_WIDTH / 2;
		var maxX = laneX + LANE_WIDTH / 2;
		if (x >= minX && x <= maxX) {
			// Check for a hittable note in this lane
			var hit = false;
			for (var j = 0; j < notes.length; j++) {
				var note = notes[j];
				if (note.lane !== i || note.hit || note.missed) continue;
				// If note is within hit window (±TARGET_HEIGHT/2)
				var dy = Math.abs(note.y - TARGET_Y);
				// Make the hit window slightly more generous to match the larger target
				if (dy <= TARGET_HEIGHT / 2 + NOTE_HEIGHT / 2) {
					// Hit!
					note.onHit();
					hit = true;
					score += 100;
					combo += 1;
					if (combo > maxCombo) maxCombo = combo;
					scoreTxt.setText(score + '');
					comboTxt.setText(combo > 1 ? combo + ' Combo!' : '');
					LK.getSound('tap').play();
					break;
				}
			}
			if (!hit) {
				// Missed tap (no note in window)
				combo = 0;
				misses += 1;
				comboTxt.setText('');
				missTxt.setText('Misses: ' + misses);
				LK.getSound('miss').play({
					fade: {
						start: 1,
						end: 0,
						duration: 1000
					}
				});
				// Flash lane red
				LK.effects.flashObject(targets[i], 0xff0000, 200);
				if (misses >= maxMisses) {
					// No game over, just keep going
				}
			}
			break;
		}
	}
};
// --- Main Game Loop ---
game.update = function () {
	if (!songStarted || songEnded) return;
	songTicks += 1;
	// Spawn notes as needed (random, infinite)
	while (songTicks >= nextNoteTick - NOTE_TRAVEL_TICKS) {
		var lane = getRandomLane();
		var noteTime = nextNoteTick;
		var note = new Note();
		note.setLane(lane);
		note.x = getLaneX(lane);
		note.y = -NOTE_HEIGHT / 2;
		note.speed = (TARGET_Y + NOTE_HEIGHT / 2) / NOTE_TRAVEL_TICKS;
		note.time = noteTime;
		note.spawned = true;
		notes.push(note);
		game.addChild(note);
		// Schedule next note
		nextNoteTick += getRandomInterval();
	}
	// Update notes
	for (var i = notes.length - 1; i >= 0; i--) {
		var note = notes[i];
		note.update();
		// If note reached target zone and not hit, mark as missed
		if (!note.hit && !note.missed && note.y >= TARGET_Y + TARGET_HEIGHT / 2) {
			note.onMiss();
			combo = 0;
			misses += 1;
			comboTxt.setText('');
			missTxt.setText('Misses: ' + misses);
			LK.getSound('miss').play({
				fade: {
					start: 1,
					end: 0,
					duration: 1000
				}
			});
			LK.effects.flashObject(targets[note.lane], 0xff0000, 200);
			if (misses >= maxMisses) {
				// No game over, just keep going
			}
		}
		// Remove destroyed notes
		if (note.destroyed) {
			notes.splice(i, 1);
		}
	}
	// No win condition, keep game running
};
// --- Start the game ---
startSong();

===================================================================
--- original.js
+++ change.js
@@ -21,11 +21,9 @@
 		self.lane = laneIdx;
 		var assetId = 'note' + (laneIdx + 1);
 		var noteAsset = self.attachAsset(assetId, {
 			anchorX: 0.5,
-			anchorY: 0.5,
-			width: NOTE_WIDTH,
-			height: NOTE_HEIGHT
+			anchorY: 0.5
 		});
 	};
 	// Called every tick
 	self.update = function () {
@@ -81,16 +79,16 @@
 
 /**** 
 * Game Code
 ****/ 
-// 4 note lanes, each with a different color for clarity
 // --- Game Constants ---
+// 4 note lanes, each with a different color for clarity
 var NUM_LANES = 4;
-var LANE_WIDTH = 320; // Increased from 200
-var LANE_SPACING = 60; // Increased from 40
-var NOTE_WIDTH = 300; // Increased from 180
-var NOTE_HEIGHT = 140; // Increased from 80
-var TARGET_HEIGHT = 200; // Increased from 120 for much larger tap area
+var LANE_WIDTH = 200;
+var LANE_SPACING = 40;
+var NOTE_WIDTH = 180;
+var NOTE_HEIGHT = 80;
+var TARGET_HEIGHT = 220; // Increased from 120 to 220 for much larger tap area
 var LANE_HEIGHT = 2200;
 var GAME_WIDTH = 2048;
 var GAME_HEIGHT = 2732;
 var LANE_TOTAL_WIDTH = NUM_LANES * LANE_WIDTH + (NUM_LANES - 1) * LANE_SPACING;
@@ -151,9 +149,9 @@
 		anchorY: 0.5,
 		x: laneX,
 		y: TARGET_Y,
 		width: LANE_WIDTH,
-		height: TARGET_HEIGHT // Now uses the updated, larger TARGET_HEIGHT
+		height: TARGET_HEIGHT // Now uses the updated, much larger TARGET_HEIGHT
 	});
 	game.addChild(target);
 	targets.push(target);
 }