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

/**** 
* Classes
****/ 
// FollowCircle: For "follow the path" notes (future extension, not used in MVP)
var FollowCircle = Container.expand(function () {
	var self = Container.call(this);
	var circle = self.attachAsset('followCircle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	circle.alpha = 0.8;
	return self;
});
// HitCircle: Tap or Hold circle
var HitCircle = Container.expand(function () {
	var self = Container.call(this);
	// Attach approach circle (shrinks towards hit time)
	var approach = self.attachAsset('approachCircle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	approach.alpha = 0.5;
	// Generate a random color for this hit circle
	self.circleColor = Math.floor(Math.random() * 0xFFFFFF);
	// Attach main hit circle with random color
	var circle = self.attachAsset('hitCircle', {
		anchorX: 0.5,
		anchorY: 0.5,
		color: self.circleColor
	});
	circle.alpha = 1;
	// Text for number or timing
	var label = new Text2('', {
		size: 80,
		fill: 0x222222,
		font: "Lilita One"
	});
	label.anchor.set(0.5, 0.5);
	self.addChild(label);
	self.hitTime = 0; // ms
	self.type = 'tap'; // 'tap' | 'hold'
	self.holdDuration = 0; // ms, for hold notes
	self.hit = false;
	self.held = false;
	self.completed = false;
	self.index = 0; // for combo display
	self.setType = function (type, holdDuration) {
		self.type = type;
		if (type === 'hold') {
			self.holdDuration = holdDuration;
		}
	};
	self.setLabel = function (txt) {
		label.setText(txt);
	};
	self.setApproachScale = function (scale) {
		approach.scaleX = scale;
		approach.scaleY = scale;
	};
	self.setCircleAlpha = function (a) {
		circle.alpha = a;
	};
	self.flash = function (color, duration) {
		LK.effects.flashObject(circle, color, duration);
	};
	self.hideApproach = function () {
		approach.visible = false;
	};
	self.hideHoldRing = function () {
		// No-op: hold ring removed
	};
	self.destroySelf = function () {
		self.destroy();
	};
	return self;
});
// Particle: Simple expanding/fading circle for hit effect
var Particle = Container.expand(function () {
	var self = Container.call(this);
	var circle = self.attachAsset('hitCircle', {
		anchorX: 0.5,
		anchorY: 0.5,
		color: 0xffffff
	});
	circle.alpha = 0.7;
	self.life = 350; // ms
	self.elapsed = 0;
	self.startScale = 0.5;
	self.endScale = 1.1;
	self.startAlpha = 0.7;
	self.endAlpha = 0.0;
	self.update = function () {
		self.elapsed += 1000 / 60;
		var t = Math.min(1, self.elapsed / self.life);
		circle.scaleX = circle.scaleY = self.startScale + (self.endScale - self.startScale) * t;
		circle.alpha = self.startAlpha + (self.endAlpha - self.startAlpha) * t;
		if (self.elapsed >= self.life) {
			self.destroy();
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x181c24
});

/**** 
* Game Code
****/ 
// Background image: 2048x2732, id is a placeholder, replace with your actual image asset id if needed
// Display new background image behind the current background image (centered, covers full play area)
var bgImageBehind = LK.getAsset('bgImageBehind', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2732 / 2
});
game.addChild(bgImageBehind);
var bgImage = LK.getAsset('bgImage', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2732 / 2
});
game.addChild(bgImage);
// Music (placeholder, actual music asset will be loaded by LK)
// Sounds (placeholders, actual sound assets will be loaded by LK)
// Circles: main hit objects
// --- Rhythm Map Data: Generate random hit circles for full song duration ---
// Set songDuration to actual song length (LK asset 'song1' end - start in ms)
var songDuration = 120000; // 2 minutes in ms
var rhythmMap = [];
var rpm = 80;
var interval = 60000 / rpm; // ms per beat
var numCircles = Math.floor(songDuration / interval);
for (var i = 0; i < numCircles; i++) {
	// Random position, but keep inside safe play area (avoid edges)
	var margin = 250;
	var x = Math.round(margin + Math.random() * (2048 - 2 * margin));
	var y = Math.round(600 + Math.random() * (2000 - 2 * margin));
	rhythmMap.push({
		time: Math.round(1200 + i * interval),
		x: x,
		y: y,
		type: 'tap'
	});
}
// --- Game State ---
var hitObjects = []; // All active hit circles
var currentIndex = 0; // Next object to spawn
var startTime = 0; // ms, when song started
var playing = false;
var score = 0;
var combo = 0;
var maxCombo = 0;
var lastTapTime = 0;
var lastTapObj = null;
var holdActive = null; // Currently held hold note
var holdStartTime = 0;
var holdBroken = false;
// var songDuration = 10000; // ms, for MVP (removed, now set to 2 min above)
var approachTime = 900; // ms, time for approach circle to shrink
var hitWindow = 320; // ms, allowed timing error for "perfect" (increased)
var goodWindow = 500; // ms, allowed for "good" (increased)
var missWindow = 700; // ms, after this it's a miss (increased)
// --- UI Elements ---
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF,
	font: "Lilita One"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var comboBg = LK.getAsset('comboTextBg', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 300
});
comboBg.alpha = 0.7;
game.addChild(comboBg);
var comboTxt = new Text2('', {
	size: 90,
	fill: 0x00FF99,
	font: "Lilita One"
});
comboTxt.anchor.set(0.5, 0.5);
comboTxt.x = 1024;
comboTxt.y = 300;
game.addChild(comboTxt);
// --- Time Bar UI ---
// Bar background
var timeBarBg = LK.getAsset('comboTextBg', {
	anchorX: 0,
	anchorY: 0.5,
	x: 120,
	y: 2732 - 100
});
timeBarBg.width = 1800;
timeBarBg.height = 44;
timeBarBg.alpha = 0.5;
game.addChild(timeBarBg);
// Foreground progress bar
var timeBarFg = LK.getAsset('comboTextBg', {
	anchorX: 0,
	anchorY: 0.5,
	x: 120,
	y: 2732 - 100,
	color: 0x00bfff // blue (change this to your desired color)
});
timeBarFg.width = 0;
timeBarFg.height = 32;
timeBarFg.alpha = 1;
game.addChild(timeBarFg);
// Countdown text for time bar
var timeBarCountdown = new Text2('2:00', {
	size: 60,
	fill: 0xffffff,
	font: "Lilita One"
});
timeBarCountdown.anchor.set(1, 0.5);
timeBarCountdown.x = timeBarBg.x + timeBarBg.width - 10;
timeBarCountdown.y = timeBarBg.y;
game.addChild(timeBarCountdown);
// --- Start Game ---
var loadingBar = null;
var loadingText = null;
var loadingTween = null;
function showLoadingBar(duration, onFinish) {
	// Remove previous if any
	if (loadingBar) loadingBar.destroy();
	if (loadingText) loadingText.destroy();
	// Bar background
	loadingBar = LK.getAsset('comboTextBg', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024,
		y: 1366
	});
	loadingBar.width = 800;
	loadingBar.height = 120;
	loadingBar.alpha = 0.85;
	game.addChild(loadingBar);
	// Foreground bar (progress)
	var barFg = LK.getAsset('comboTextBg', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 1024,
		y: 1366,
		color: 0x00ff99
	});
	barFg.width = 0;
	barFg.height = 80;
	barFg.alpha = 1;
	loadingBar.addChild(barFg);
	// Text
	loadingText = new Text2('Song coming...', {
		size: 80,
		fill: 0xffffff,
		font: "Lilita One"
	});
	loadingText.anchor.set(0.5, 0.5);
	loadingText.x = 1024;
	loadingText.y = 1366;
	game.addChild(loadingText);
	// Animate bar
	var start = Date.now();
	function updateBar() {
		var now = Date.now();
		var elapsed = now - start;
		var frac = Math.min(1, elapsed / duration);
		barFg.width = 760 * frac;
		if (frac < 1) {
			loadingTween = LK.setTimeout(updateBar, 16);
		} else {
			if (loadingBar) loadingBar.destroy();
			if (loadingText) loadingText.destroy();
			loadingBar = null;
			loadingText = null;
			if (onFinish) onFinish();
		}
	}
	updateBar();
}
function startGame() {
	// Reset state
	for (var i = 0; i < hitObjects.length; i++) hitObjects[i].destroySelf();
	hitObjects = [];
	currentIndex = 0;
	score = 0;
	combo = 0;
	maxCombo = 0;
	holdActive = null;
	holdBroken = false;
	scoreTxt.setText('0');
	comboTxt.setText('');
	comboBg.visible = false;
	playing = false;
	LK.setScore(0);
	// Show loading bar for 10s, then start hit circles
	showLoadingBar(10000, function () {
		startTime = Date.now();
		playing = true;
	});
}
startGame();
// --- Spawning Hit Circles ---
function spawnHitObject(obj, idx) {
	var hc = new HitCircle();
	hc.x = obj.x;
	hc.y = obj.y;
	hc.hitTime = obj.time;
	hc.index = idx + 1;
	// Set label to (idx mod 8) + 1, so it loops 1-8
	var circleNum = idx % 8 + 1;
	hc.setLabel(circleNum + '');
	// Define a palette of 8 distinct colors (looped)
	var palette = [0xff5555,
	// red
	0xffc300,
	// yellow
	0x4dd0e1,
	// cyan
	0x81c784,
	// green
	0xba68c8,
	// purple
	0xff8a65,
	// orange
	0x90caf9,
	// blue
	0xf06292 // pink
	];
	var colorIdx = (circleNum - 1) % palette.length;
	var color = palette[colorIdx];
	// Set the hit circle's color to match its number
	if (hc.children && hc.children.length > 1) {
		hc.children[1].tint = color;
	}
	hc.circleColor = color;
	if (obj.type === 'hold') {
		hc.setType('hold', obj.hold);
	}
	// Start approach circle at a larger scale for more dramatic appearance
	hc.setApproachScale(1.5);
	game.addChild(hc);
	hitObjects.push(hc);
}
// --- Scoring ---
function addScore(val) {
	score += val;
	LK.setScore(score);
	scoreTxt.setText(score);
}
function setCombo(val) {
	combo = val;
	if (combo > maxCombo) maxCombo = combo;
	if (combo > 1) {
		comboTxt.setText(combo + 'x');
		comboBg.visible = true;
	} else {
		comboTxt.setText('');
		comboBg.visible = false;
	}
}
// --- Judgement Feedback ---
function showJudgement(hc, type) {
	var txt = '';
	var color = 0xffffff;
	if (type === 'perfect') {
		txt = 'Perfect!';
		color = 0x00ff99;
	} else if (type === 'good') {
		txt = 'Good';
		color = 0xffe066;
	} else if (type === 'miss') {
		txt = 'Miss';
		color = 0xff3333;
	}
	var judge = new Text2(txt, {
		size: 90,
		fill: 0xFFFFFF,
		font: "Lilita One"
	});
	judge.anchor.set(0.5, 0.5);
	judge.x = hc.x;
	judge.y = hc.y - 120;
	game.addChild(judge);
	tween(judge, {
		alpha: 0,
		y: hc.y - 220
	}, {
		duration: 600,
		easing: tween.easeOut,
		onFinish: function onFinish() {
			judge.destroy();
		}
	});
	// Hit effect: flash the main circle (not the container) for more visual feedback
	if (hc.children && hc.children.length > 1) {
		LK.effects.flashObject(hc.children[1], color, 200);
	} else {
		LK.effects.flashObject(hc, color, 200);
	}
	// Flash all four screen edges for hit feedback
	var edges = [
	// Top edge
	{
		x: 0,
		y: 0,
		anchorX: 0,
		anchorY: 0,
		width: 2048,
		height: 80
	},
	// Bottom edge
	{
		x: 0,
		y: 2732,
		anchorX: 0,
		anchorY: 1,
		width: 2048,
		height: 80
	},
	// Left edge
	{
		x: 0,
		y: 0,
		anchorX: 0,
		anchorY: 0,
		width: 80,
		height: 2732
	},
	// Right edge
	{
		x: 2048,
		y: 0,
		anchorX: 1,
		anchorY: 0,
		width: 80,
		height: 2732
	}];
	var edgeFlashColor = hc && hc.circleColor ? hc.circleColor : color;
	for (var i = 0; i < edges.length; i++) {
		var e = edges[i];
		var flashRect = LK.getAsset('comboTextBg', {
			anchorX: e.anchorX,
			anchorY: e.anchorY,
			x: e.x,
			y: e.y
		});
		flashRect.width = e.width;
		flashRect.height = e.height;
		flashRect.alpha = 0.7;
		flashRect.tint = edgeFlashColor;
		game.addChild(flashRect);
		tween(flashRect, {
			alpha: 0
		}, {
			duration: 220,
			onFinish: function (rect) {
				return function () {
					rect.destroy();
				};
			}(flashRect)
		});
	}
	// Particle effect at hit location
	var particle = new Particle();
	particle.x = hc.x;
	particle.y = hc.y;
	if (hc.circleColor) {
		if (particle.children && particle.children.length > 0) {
			particle.children[0].tint = hc.circleColor;
		}
	}
	game.addChild(particle);
	// Extra: spawn a burst of small particles for more impact
	for (var i = 0; i < 6; i++) {
		var p = new Particle();
		p.x = hc.x;
		p.y = hc.y;
		if (hc.circleColor && p.children && p.children.length > 0) {
			p.children[0].tint = hc.circleColor;
		}
		// Give each particle a random direction and speed
		var angle = Math.random() * Math.PI * 2;
		var speed = 8 + Math.random() * 10;
		p.vx = Math.cos(angle) * speed;
		p.vy = Math.sin(angle) * speed;
		// Override update to move outward and fade
		(function (p) {
			var baseUpdate = p.update;
			p.update = function () {
				p.x += p.vx;
				p.y += p.vy;
				// Slow down
				p.vx *= 0.92;
				p.vy *= 0.92;
				baseUpdate.call(p);
			};
		})(p);
		game.addChild(p);
	}
}
// --- Input Handling ---
game.down = function (x, y, obj) {
	if (!playing) return;
	var now = Date.now();
	var found = false;
	for (var i = 0; i < hitObjects.length; i++) {
		var hc = hitObjects[i];
		if (hc.hit) continue;
		// Only allow tap if within approach window
		var dt = now - startTime - hc.hitTime;
		if (Math.abs(dt) > missWindow + 200) continue;
		// Check if tap is inside circle
		var dx = x - hc.x;
		var dy = y - hc.y;
		var r = hc.width / 2;
		if (dx * dx + dy * dy < r * r) {
			found = true;
			if (hc.type === 'tap') {
				judgeTap(hc, dt);
			} else if (hc.type === 'hold') {
				// Start hold
				if (Math.abs(dt) <= hitWindow) {
					holdActive = hc;
					holdStartTime = now;
					holdBroken = false;
					hc.held = true;
					hc.hideApproach();
				} else {
					judgeTap(hc, dt); // treat as tap if too early/late
				}
			}
			break;
		}
	}
	if (!found) {
		// Miss: tap not on any circle
		setCombo(0);
	}
};
game.up = function (x, y, obj) {
	if (holdActive && holdActive.held && !holdActive.completed) {
		var now = Date.now();
		var heldTime = now - holdStartTime;
		if (heldTime >= holdActive.holdDuration - 120) {
			// Success
			judgeHold(holdActive, heldTime);
		} else {
			// Released too early
			holdBroken = true;
			judgeHold(holdActive, heldTime);
		}
		holdActive.held = false;
		holdActive = null;
	}
};
// --- Judgement Logic ---
function judgeTap(hc, dt) {
	if (hc.hit) return;
	var absdt = Math.abs(dt);
	if (absdt <= hitWindow) {
		// Perfect
		addScore(300);
		setCombo(combo + 1);
		showJudgement(hc, 'perfect');
	} else if (absdt <= goodWindow) {
		addScore(100);
		setCombo(combo + 1);
		showJudgement(hc, 'good');
	} else if (absdt <= missWindow) {
		addScore(0);
		setCombo(0);
		showJudgement(hc, 'miss');
	} else {
		return; // too early/late, ignore
	}
	hc.hit = true;
	hc.setCircleAlpha(0.3);
	hc.hideApproach();
	tween(hc, {
		alpha: 0
	}, {
		duration: 300,
		onFinish: function onFinish() {
			hc.destroySelf();
		}
	});
}
function judgeHold(hc, heldTime) {
	if (hc.hit) return;
	if (holdBroken || heldTime < hc.holdDuration - 120) {
		// Miss
		addScore(0);
		setCombo(0);
		showJudgement(hc, 'miss');
	} else {
		addScore(400);
		setCombo(combo + 1);
		showJudgement(hc, 'perfect');
	}
	hc.hit = true;
	hc.completed = true;
	hc.setCircleAlpha(0.3);
	hc.hideHoldRing();
	tween(hc, {
		alpha: 0
	}, {
		duration: 300,
		onFinish: function onFinish() {
			hc.destroySelf();
		}
	});
}
// --- Main Update Loop ---
game.update = function () {
	if (!playing) return;
	var now = Date.now();
	var songPos = now - startTime;
	// Spawn new hit objects
	while (currentIndex < rhythmMap.length && rhythmMap[currentIndex].time - approachTime <= songPos) {
		spawnHitObject(rhythmMap[currentIndex], currentIndex);
		currentIndex++;
	}
	// Update hit objects
	for (var i = hitObjects.length - 1; i >= 0; i--) {
		var hc = hitObjects[i];
		if (hc.hit) continue;
		var dt = songPos - hc.hitTime;
		// Approach circle shrinks
		var approachScale = Math.max(0.2, 1.0 - (dt + approachTime) / approachTime);
		hc.setApproachScale(approachScale);
		// Missed?
		if (dt > missWindow && !hc.hit) {
			// Miss
			addScore(0);
			setCombo(0);
			showJudgement(hc, 'miss');
			hc.hit = true;
			hc.setCircleAlpha(0.2);
			hc.hideApproach();
			tween(hc, {
				alpha: 0
			}, {
				duration: 300,
				onFinish: function onFinish() {
					hc.destroySelf();
				}
			});
		}
		// For hold notes: if held, show progress
		if (hc.type === 'hold' && hc.held && !hc.completed) {
			var heldTime = now - holdStartTime;
			if (heldTime >= hc.holdDuration) {
				judgeHold(hc, heldTime);
				holdActive = null;
			}
		}
	}
	// Update time bar
	if (typeof timeBarFg !== "undefined" && typeof timeBarBg !== "undefined") {
		// Always set the left edge and width, so the bar grows from left to right
		var frac = Math.max(0, Math.min(1, songPos / songDuration));
		timeBarFg.x = timeBarBg.x; // align left edge
		timeBarFg.y = timeBarBg.y;
		timeBarFg.width = timeBarBg.width * frac;
		timeBarFg.height = timeBarBg.height - 12;
		// Update countdown text
		if (typeof timeBarCountdown !== "undefined") {
			var remaining = Math.max(0, songDuration - songPos);
			var sec = Math.floor(remaining / 1000);
			var min = Math.floor(sec / 60);
			sec = sec % 60;
			var timeStr = min + ":" + (sec < 10 ? "0" : "") + sec;
			timeBarCountdown.setText(timeStr);
		}
	}
	// End of song
	if (songPos > songDuration + 1000) {
		playing = false;
		LK.showYouWin();
	}
};
// --- Music Start ---
// (Music is started in startGame)
// --- Game Over/Win Handling (handled by LK) ---
// --- Touchscreen: No keyboard controls needed ---
// --- Prevent elements in top left 100x100 px ---
comboBg.x = 1024;
comboBg.y = 300;
comboTxt.x = 1024;
comboTxt.y = 300;
// --- (Optional) Restart on game over/win ---
/*
LK.on('gameover', function(){
	startGame();
});
LK.on('youwin', function(){
	startGame();
});
*/

===================================================================
--- original.js
+++ change.js
@@ -115,10 +115,10 @@
 
 /**** 
 * Game Code
 ****/ 
-// Display new background image behind the current background image (centered, covers full play area)
 // Background image: 2048x2732, id is a placeholder, replace with your actual image asset id if needed
+// Display new background image behind the current background image (centered, covers full play area)
 var bgImageBehind = LK.getAsset('bgImageBehind', {
 	anchorX: 0.5,
 	anchorY: 0.5,
 	x: 2048 / 2,
@@ -305,11 +305,8 @@
 	comboTxt.setText('');
 	comboBg.visible = false;
 	playing = false;
 	LK.setScore(0);
-	LK.stopMusic();
-	// Start music before loading bar, so music plays during the loading bar wait
-	LK.playMusic('song1');
 	// Show loading bar for 10s, then start hit circles
 	showLoadingBar(10000, function () {
 		startTime = Date.now();
 		playing = true;
@@ -541,9 +538,8 @@
 					holdStartTime = now;
 					holdBroken = false;
 					hc.held = true;
 					hc.hideApproach();
-					LK.getSound('hold').play();
 				} else {
 					judgeTap(hc, dt); // treat as tap if too early/late
 				}
 			}
@@ -552,9 +548,8 @@
 	}
 	if (!found) {
 		// Miss: tap not on any circle
 		setCombo(0);
-		LK.getSound('miss').play();
 	}
 };
 game.up = function (x, y, obj) {
 	if (holdActive && holdActive.held && !holdActive.completed) {
@@ -580,19 +575,16 @@
 		// Perfect
 		addScore(300);
 		setCombo(combo + 1);
 		showJudgement(hc, 'perfect');
-		LK.getSound('hit').play();
 	} else if (absdt <= goodWindow) {
 		addScore(100);
 		setCombo(combo + 1);
 		showJudgement(hc, 'good');
-		LK.getSound('hit').play();
 	} else if (absdt <= missWindow) {
 		addScore(0);
 		setCombo(0);
 		showJudgement(hc, 'miss');
-		LK.getSound('miss').play();
 	} else {
 		return; // too early/late, ignore
 	}
 	hc.hit = true;
@@ -613,14 +605,12 @@
 		// Miss
 		addScore(0);
 		setCombo(0);
 		showJudgement(hc, 'miss');
-		LK.getSound('miss').play();
 	} else {
 		addScore(400);
 		setCombo(combo + 1);
 		showJudgement(hc, 'perfect');
-		LK.getSound('hit').play();
 	}
 	hc.hit = true;
 	hc.completed = true;
 	hc.setCircleAlpha(0.3);
@@ -657,9 +647,8 @@
 			// Miss
 			addScore(0);
 			setCombo(0);
 			showJudgement(hc, 'miss');
-			LK.getSound('miss').play();
 			hc.hit = true;
 			hc.setCircleAlpha(0.2);
 			hc.hideApproach();
 			tween(hc, {