/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	coins: 0,
	claimed: {}
});

/**** 
* Classes
****/ 
// Obstacle class (tall block)
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obsSprite = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 1
	});
	self.speed = 22;
	self.update = function () {
		self.x -= self.speed;
	};
	return self;
});
// Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerSprite = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 1
	});
	// Apply skin color if selected
	var skinColors = {
		"skin_red": 0xe74c3c,
		"skin_green": 0x2ecc71,
		"skin_gold": 0xf1c40f
	};
	if (storage.selectedSkin && skinColors[storage.selectedSkin]) {
		playerSprite.color = skinColors[storage.selectedSkin];
		// LK shape assets support .color property for tinting
	}
	// Physics
	self.vy = 0;
	self.isJumping = false;
	self.gravity = 2.2;
	self.jumpStrength = -48;
	self.groundY = 0; // Set after ground is created
	// Update method
	self.update = function () {
		// Apply gravity
		self.vy += self.gravity;
		self.y += self.vy;
		// Ground collision
		if (self.y > self.groundY) {
			self.y = self.groundY;
			self.vy = 0;
			self.isJumping = false;
		}
	};
	// Jump method
	self.jump = function () {
		if (!self.isJumping && self.y >= self.groundY) {
			self.vy = self.jumpStrength;
			self.isJumping = true;
			// Start 360-degree rotation tween on playerSprite
			tween(playerSprite, {
				rotation: playerSprite.rotation + Math.PI * 2
			}, {
				duration: 400,
				easing: tween.linear
			});
		}
	};
	return self;
});
// Spike class (obstacle)
var Spike = Container.expand(function () {
	var self = Container.call(this);
	var spikeSprite = self.attachAsset('spike', {
		anchorX: 0.5,
		anchorY: 1
	});
	self.speed = 22; // Moves left
	self.update = function () {
		self.x -= self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x222831
});

/**** 
* Game Code
****/ 
// Player: blue square
// Ground: gray rectangle
// Spike: red triangle (approximate with a tall, thin box for MVP)
// Obstacle: purple rectangle
var LEVELS = [{
	name: "First Steps",
	difficulty: "Easy",
	color: 0x2ecc71,
	minGap: 500,
	maxGap: 900,
	types: ['spike', 'obstacle', 'spike'],
	intro: "Welcome to your first steps!"
}, {
	name: "Erin's Adventure",
	difficulty: "Medium",
	color: 0xf1c40f,
	minGap: 500,
	maxGap: 900,
	types: ['spike', 'obstacle', 'spike'],
	intro: "A trickier journey awaits."
}, {
	name: "Final Steps",
	difficulty: "Hard",
	color: 0xe74c3c,
	minGap: 500,
	maxGap: 900,
	types: ['spike', 'obstacle', 'spike'],
	intro: "Only the brave survive!"
}, {
	name: "Erin’s atventure continuation",
	difficulty: "Hard",
	color: 0x8e44ad,
	minGap: 320,
	maxGap: 480,
	types: ['spike', 'spike', 'obstacle', 'spike', 'spike'],
	intro: "The spikes are closer than ever. Time your jumps perfectly!"
}, {
	name: "Dash",
	difficulty: "Extreme",
	color: 0x16a085,
	minGap: 220,
	maxGap: 350,
	types: ['spike', 'spike', 'spike', 'obstacle', 'spike', 'spike', 'spike'],
	intro: "Dash through a gauntlet of spikes! Can you survive?"
}];
// --- MENU STATE ---
var MENU_STATE = {
	MAIN: 0,
	LEVEL_SELECT: 1,
	PLAYING: 2
};
var menuState = MENU_STATE.MAIN;
var selectedLevel = 0;
// --- UI ELEMENTS ---
var menuContainer = new Container();
var levelSelectContainer = new Container();
var introText = null;
// --- GAME CONSTANTS ---
var GROUND_HEIGHT = 120;
var PLAYER_SIZE = 120;
var PLAYER_START_X = 400;
var OBSTACLE_MIN_GAP = 600;
var OBSTACLE_MAX_GAP = 1100;
var OBSTACLE_TYPES = ['spike', 'obstacle'];
var OBSTACLE_Y = 2732 - GROUND_HEIGHT;
// --- GAME STATE ---
var player;
var ground;
var obstacles = [];
var score = 0;
var scoreTxt;
var lastObstacleX = 0;
var isGameOver = false;
// --- UI HELPERS ---
function clearMenuUI() {
	if (menuContainer.parent) menuContainer.parent.removeChild(menuContainer);
	if (levelSelectContainer.parent) levelSelectContainer.parent.removeChild(levelSelectContainer);
	if (introText && introText.parent) introText.parent.removeChild(introText);
}
// --- MAIN MENU ---
function showMainMenu() {
	clearMenuUI();
	menuState = MENU_STATE.MAIN;
	menuContainer.removeChildren();
	// Title
	var title = new Text2("Geometry Dash", {
		size: 180,
		fill: 0xFFFFFF,
		fontWeight: "bold",
		stroke: 0x000000,
		strokeThickness: 12
	});
	title.anchor.set(0.5, 0);
	title.x = 2048 / 2;
	title.y = 400;
	menuContainer.addChild(title);
	// Play button
	var playBtn = new Text2("Play", {
		size: 140,
		fill: 0x2ECC71,
		fontWeight: "bold",
		stroke: 0x000000,
		strokeThickness: 10
	});
	playBtn.anchor.set(0.5, 0.5);
	playBtn.x = 2048 / 2;
	playBtn.y = 1000;
	playBtn.interactive = true;
	playBtn.buttonMode = true;
	playBtn.down = function () {
		showLevelSelect();
	};
	menuContainer.addChild(playBtn);
	// Shop button
	var shopBtn = new Text2("Shop", {
		size: 120,
		fill: 0xf1c40f,
		fontWeight: "bold",
		stroke: 0x000000,
		strokeThickness: 8
	});
	shopBtn.anchor.set(0.5, 0.5);
	shopBtn.x = 2048 / 2;
	shopBtn.y = 1200;
	shopBtn.interactive = true;
	shopBtn.buttonMode = true;
	shopBtn.down = function () {
		showShop();
	};
	menuContainer.addChild(shopBtn);
	// Add to game
	game.addChild(menuContainer);
	// Remove 'Back to Main Menu' button if present
	if (game.goBackBtn && game.goBackBtn.parent) {
		game.goBackBtn.parent.removeChild(game.goBackBtn);
		game.goBackBtn.visible = false;
	}
}
// --- SHOP ---
var shopContainer = new Container();
var SHOP_ITEMS = [{
	id: "skin_red",
	name: "Red Skin",
	price: 30,
	color: 0xe74c3c
}, {
	id: "skin_green",
	name: "Green Skin",
	price: 30,
	color: 0x2ecc71
}, {
	id: "skin_gold",
	name: "Gold Skin",
	price: 100,
	color: 0xf1c40f
}];
function showShop() {
	clearMenuUI();
	menuState = MENU_STATE.MAIN;
	shopContainer.removeChildren();
	// Title
	var shopTitle = new Text2("Shop", {
		size: 150,
		fill: 0xFFFFFF,
		fontWeight: "bold",
		stroke: 0x000000,
		strokeThickness: 10
	});
	shopTitle.anchor.set(0.5, 0);
	shopTitle.x = 2048 / 2;
	shopTitle.y = 300;
	shopContainer.addChild(shopTitle);
	// Coin display
	var coins = storage.coins || 0;
	var coinTxt = new Text2("Coins: " + coins, {
		size: 100,
		fill: 0xf1c40f,
		fontWeight: "bold",
		stroke: 0x000000,
		strokeThickness: 7
	});
	coinTxt.anchor.set(0.5, 0);
	coinTxt.x = 2048 / 2;
	coinTxt.y = 500;
	shopContainer.addChild(coinTxt);
	// List items
	for (var i = 0; i < SHOP_ITEMS.length; i++) {
		(function (idx) {
			var item = SHOP_ITEMS[idx];
			var owned = storage["owned_" + item.id] === true;
			var y = 700 + idx * 220;
			var itemTxt = new Text2(item.name, {
				size: 100,
				fill: "#" + item.color.toString(16).padStart(6, "0"),
				fontWeight: "bold",
				stroke: 0x000000,
				strokeThickness: 7
			});
			itemTxt.anchor.set(0, 0.5);
			itemTxt.x = 400;
			itemTxt.y = y;
			shopContainer.addChild(itemTxt);
			var priceTxt = new Text2(owned ? "Owned" : item.price + " coins", {
				size: 90,
				fill: owned ? 0x2ecc71 : 0xffffff,
				fontWeight: "bold",
				stroke: 0x000000,
				strokeThickness: 6
			});
			priceTxt.anchor.set(0.5, 0.5);
			priceTxt.x = 1200;
			priceTxt.y = y;
			shopContainer.addChild(priceTxt);
			// Buy/select button
			var btnTxt = owned ? storage.selectedSkin === item.id ? "Selected" : "Select" : "Buy";
			var btn = new Text2(btnTxt, {
				size: 90,
				fill: owned ? storage.selectedSkin === item.id ? 0x2ecc71 : 0x3498db : 0xf1c40f,
				fontWeight: "bold",
				stroke: 0x000000,
				strokeThickness: 6
			});
			btn.anchor.set(0.5, 0.5);
			btn.x = 1700;
			btn.y = y;
			btn.interactive = true;
			btn.buttonMode = true;
			btn.down = function () {
				if (owned) {
					// Select skin
					storage.selectedSkin = item.id;
					showShop();
				} else {
					// Try to buy
					var coins = storage.coins || 0;
					if (coins >= item.price) {
						storage.coins = coins - item.price;
						storage["owned_" + item.id] = true;
						storage.selectedSkin = item.id;
						showShop();
					} else {
						priceTxt.setText("Not enough!");
						priceTxt.fill = 0xe74c3c;
					}
				}
			};
			shopContainer.addChild(btn);
		})(i);
	}
	// Back button
	var backBtn = new Text2("Back", {
		size: 90,
		fill: 0x888888,
		fontWeight: "bold",
		stroke: 0x000000,
		strokeThickness: 6
	});
	backBtn.anchor.set(0.5, 0.5);
	backBtn.x = 2048 / 2;
	backBtn.y = 700 + SHOP_ITEMS.length * 220 + 100;
	backBtn.interactive = true;
	backBtn.buttonMode = true;
	backBtn.down = function () {
		// Remove shop UI before showing main menu
		if (shopContainer.parent) shopContainer.parent.removeChild(shopContainer);
		showMainMenu();
	};
	shopContainer.addChild(backBtn);
	game.addChild(shopContainer);
}
// --- LEVEL SELECT MENU ---
function showLevelSelect() {
	clearMenuUI();
	menuState = MENU_STATE.LEVEL_SELECT;
	levelSelectContainer.removeChildren();
	// Title
	var selTitle = new Text2("Select Level", {
		size: 150,
		fill: 0xFFFFFF,
		fontWeight: "bold",
		stroke: 0x000000,
		strokeThickness: 10
	});
	selTitle.anchor.set(0.5, 0);
	selTitle.x = 2048 / 2;
	selTitle.y = 300;
	levelSelectContainer.addChild(selTitle);
	// Level buttons
	for (var i = 0; i < LEVELS.length; i++) {
		(function (idx) {
			var lvl = LEVELS[idx];
			var btn = new Text2(lvl.name + " (" + lvl.difficulty + ")", {
				size: 110,
				fill: "#" + lvl.color.toString(16).padStart(6, "0"),
				fontWeight: "bold",
				stroke: 0x000000,
				strokeThickness: 8
			});
			btn.anchor.set(0.5, 0.5);
			btn.x = 2048 / 2;
			btn.y = 600 + idx * 250;
			btn.interactive = true;
			btn.buttonMode = true;
			btn.down = function () {
				selectedLevel = idx;
				showLevelIntro();
			};
			levelSelectContainer.addChild(btn);
		})(i);
	}
	// Back button
	var backBtn = new Text2("Back", {
		size: 90,
		fill: 0x888888,
		fontWeight: "bold",
		stroke: 0x000000,
		strokeThickness: 6
	});
	backBtn.anchor.set(0.5, 0.5);
	backBtn.x = 2048 / 2;
	backBtn.y = 600 + LEVELS.length * 250 + 100;
	backBtn.interactive = true;
	backBtn.buttonMode = true;
	backBtn.down = function () {
		showMainMenu();
	};
	levelSelectContainer.addChild(backBtn);
	game.addChild(levelSelectContainer);
	// Remove 'Back to Main Menu' button if present
	if (game.goBackBtn && game.goBackBtn.parent) {
		game.goBackBtn.parent.removeChild(game.goBackBtn);
		game.goBackBtn.visible = false;
	}
}
// --- LEVEL INTRO ---
function showLevelIntro() {
	clearMenuUI();
	menuState = MENU_STATE.LEVEL_SELECT;
	var lvl = LEVELS[selectedLevel];
	// Coin rewards per level
	var COIN_REWARDS = [20, 50, 100];
	var rewardText = lvl.name + "\nDifficulty: " + lvl.difficulty + "\n\n" + lvl.intro + "\n\nTap to Start";
	var showClaim = false;
	var coinsToClaim = 0;
	if (storage.claimed && storage.claimed[selectedLevel] === false && storage.lastCompletedLevel !== undefined && storage.lastCompletedLevel == selectedLevel) {
		// Player just beat this level and hasn't claimed coins yet
		showClaim = true;
		coinsToClaim = COIN_REWARDS[selectedLevel];
		rewardText += "\n\n🎉 Level Complete! 🎉\nClaim +" + coinsToClaim + " coins!";
	}
	introText = new Text2(rewardText, {
		size: 100,
		fill: "#" + lvl.color.toString(16).padStart(6, "0"),
		align: "center",
		fontWeight: "bold",
		stroke: 0x000000,
		strokeThickness: 7
	});
	introText.anchor.set(0.5, 0.5);
	introText.x = 2048 / 2;
	introText.y = 1200;
	introText.interactive = true;
	introText.buttonMode = true;
	introText.down = function () {
		if (showClaim) return; // Don't start level if claim is available
		startLevel(selectedLevel);
	};
	game.addChild(introText);
	// Show claim button if eligible
	if (showClaim) {
		var claimBtn = new Text2("Claim +" + coinsToClaim + " coins", {
			size: 110,
			fill: 0xFFD700,
			fontWeight: "bold",
			stroke: 0x000000,
			strokeThickness: 8
		});
		claimBtn.anchor.set(0.5, 0.5);
		claimBtn.x = 2048 / 2;
		claimBtn.y = introText.y + 350;
		claimBtn.interactive = true;
		claimBtn.buttonMode = true;
		claimBtn.down = function () {
			// Add coins and mark as claimed
			storage.coins = (storage.coins || 0) + coinsToClaim;
			if (!storage.claimed) storage.claimed = {};
			storage.claimed[selectedLevel] = true;
			// Remove lastCompletedLevel so claim can't be repeated
			delete storage.lastCompletedLevel;
			// Update UI
			claimBtn.setText("Claimed!");
			claimBtn.interactive = false;
			claimBtn.buttonMode = false;
		};
		game.addChild(claimBtn);
	}
	// Only show 'Back to Main Menu' button if player just finished a level (not on every intro)
	if (storage.lastCompletedLevel !== undefined && storage.lastCompletedLevel == selectedLevel) {
		var backToMenuBtn = new Text2("Back to Main Menu", {
			size: 90,
			fill: 0xFFD700,
			fontWeight: "bold",
			stroke: 0x000000,
			strokeThickness: 6
		});
		// Anchor to center, place further down under "Tap to Start" and Claim button if present
		backToMenuBtn.anchor.set(0.5, 0.5);
		// If claimBtn is present, place below it, else below introText
		var btnY = introText.y + 250;
		// Find claimBtn if present
		var claimBtnY = null;
		var children = game.children ? game.children.slice() : [];
		for (var i = 0; i < children.length; i++) {
			if (children[i] && children[i].text && typeof children[i].text === "string" && children[i].text.indexOf("Claim") === 0) {
				claimBtnY = children[i].y;
				break;
			}
		}
		if (claimBtnY !== null) {
			btnY = claimBtnY + 250;
		}
		// Move button even further to the right
		backToMenuBtn.x = 2048 / 2 + 700;
		backToMenuBtn.y = btnY;
		backToMenuBtn.interactive = true;
		backToMenuBtn.buttonMode = true;
		backToMenuBtn.visible = true;
		backToMenuBtn.down = function () {
			// Remove introText and claimBtn if present
			if (introText && introText.parent) introText.parent.removeChild(introText);
			// Remove claimBtn if present
			var children = game.children ? game.children.slice() : [];
			for (var i = 0; i < children.length; i++) {
				if (children[i] && children[i].text && typeof children[i].text === "string" && children[i].text.indexOf("Claim") === 0) {
					if (children[i].parent) children[i].parent.removeChild(children[i]);
				}
			}
			if (backToMenuBtn && backToMenuBtn.parent) backToMenuBtn.parent.removeChild(backToMenuBtn);
			showMainMenu();
		};
		game.addChild(backToMenuBtn);
	}
	// Remove 'Back to Main Menu' button if present (from gameplay)
	if (game.goBackBtn && game.goBackBtn.parent) {
		game.goBackBtn.parent.removeChild(game.goBackBtn);
		game.goBackBtn.visible = false;
	}
}
// --- START LEVEL ---
function startLevel(levelIdx) {
	clearMenuUI();
	menuState = MENU_STATE.PLAYING;
	// Set level params
	var lvl = LEVELS[levelIdx];
	OBSTACLE_MIN_GAP = lvl.minGap;
	OBSTACLE_MAX_GAP = lvl.maxGap;
	OBSTACLE_TYPES = lvl.types;
	// Reset game state
	resetGame();
	// Show score
	scoreTxt.setText("0");
	scoreTxt.visible = true;
	// Show ground and player
	if (!ground) {
		ground = LK.getAsset('ground', {
			anchorX: 0,
			anchorY: 1,
			x: 0,
			y: 2732
		});
		game.addChild(ground);
	}
	if (!player) {
		player = new Player();
		player.x = PLAYER_START_X;
		player.groundY = 2732 - GROUND_HEIGHT;
		player.y = player.groundY;
		game.addChild(player);
	}
	// Initial obstacle
	lastObstacleX = 1200 + 700; //{2I} // Add extra distance for a longer start
	spawnObstacle();
	// Remove 'Back to Main Menu' button if present (should only show after level complete)
	if (game.goBackBtn && game.goBackBtn.parent) {
		game.goBackBtn.parent.removeChild(game.goBackBtn);
		game.goBackBtn.visible = false;
	}
	// Do not show 'Back to Main Menu' button in gameplay
	game.goBackBtn.visible = false;
}
// --- SCORE TEXT ---
scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF,
	fontWeight: "bold",
	stroke: 0x000000,
	strokeThickness: 8
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.visible = false;
// --- GO BACK TO MAIN MENU BUTTON (persistent for gameplay) ---
game.goBackBtn = new Text2("Back to Main Menu", {
	size: 90,
	fill: 0xFFD700,
	fontWeight: "bold",
	stroke: 0x000000,
	strokeThickness: 6
});
game.goBackBtn.anchor.set(1, 0);
game.goBackBtn.x = 2048 - 40;
game.goBackBtn.y = 380;
game.goBackBtn.interactive = true;
game.goBackBtn.buttonMode = true;
game.goBackBtn.visible = false;
game.goBackBtn.down = function () {
	// Remove gameplay UI and go to main menu
	if (scoreTxt) scoreTxt.visible = false;
	if (game.goBackBtn && game.goBackBtn.parent) game.goBackBtn.parent.removeChild(game.goBackBtn);
	game.goBackBtn.visible = false;
	showMainMenu();
};
LK.gui.topRight.addChild(game.goBackBtn);
// --- SAMPLE TEXT LABEL ---
var sampleText = new Text2("Sample Text", {
	size: 100,
	fill: 0xFFD700,
	fontWeight: "bold",
	stroke: 0x000000,
	strokeThickness: 7
});
sampleText.anchor.set(0.5, 0.5);
sampleText.x = 2048 / 2;
sampleText.y = 2732 / 2;
sampleText.interactive = true;
sampleText.buttonMode = true;
sampleText.down = function () {
	// Secret action: show a message or perform a hidden action
	LK.showMessage && LK.showMessage("You found the secret button! 🎉");
};
game.addChild(sampleText);
// --- INITIALIZE: show main menu ---
showMainMenu();
// Helper: spawn obstacle
function spawnObstacle() {
	// Randomly pick type
	var type = OBSTACLE_TYPES[Math.floor(Math.random() * OBSTACLE_TYPES.length)];
	var obs;
	if (type === 'spike') {
		obs = new Spike();
		obs.x = 2048 + 100;
		obs.y = OBSTACLE_Y;
	} else {
		obs = new Obstacle();
		obs.x = 2048 + 100;
		obs.y = OBSTACLE_Y;
	}
	obstacles.push(obs);
	game.addChild(obs);
	lastObstacleX = obs.x;
}
// Helper: reset game state
function resetGame() {
	// Remove obstacles
	for (var i = 0; i < obstacles.length; i++) {
		obstacles[i].destroy();
	}
	obstacles = [];
	// Reset player
	if (player) {
		player.x = PLAYER_START_X;
		player.y = player.groundY;
		player.vy = 0;
		player.isJumping = false;
		player.visible = true; // Make player visible again after explosion
	}
	// Reset score
	score = 0;
	scoreTxt.setText(score);
	lastObstacleX = 1200;
	isGameOver = false;
}
// Touch/click to jump
game.down = function (x, y, obj) {
	if (menuState !== MENU_STATE.PLAYING) return;
	if (isGameOver) return;
	player.jump();
};
// Main update loop
game.update = function () {
	if (menuState !== MENU_STATE.PLAYING) return;
	if (isGameOver) return;
	// Update player
	player.update();
	// Update obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obs = obstacles[i];
		obs.update();
		// Remove if off screen
		if (obs.x < -200) {
			obs.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		// Collision detection
		if (player.intersects(obs)) {
			// Explode player into small pieces
			if (player && player.parent) {
				var numPieces = 12;
				var centerX = player.x;
				var centerY = player.y;
				var pieceSize = 32;
				for (var p = 0; p < numPieces; p++) {
					(function (pieceIdx) {
						var angle = Math.PI * 2 / numPieces * pieceIdx;
						var px = centerX;
						var py = centerY - PLAYER_SIZE / 2 + pieceSize / 2;
						var piece = new Container();
						var pieceSprite = piece.attachAsset('player', {
							anchorX: 0.5,
							anchorY: 0.5,
							width: pieceSize,
							height: pieceSize
						});
						// Use same color as player
						var playerSpriteRef = player && player.childAt ? player.childAt(0) : null;
						if (playerSpriteRef && playerSpriteRef.color) {
							pieceSprite.color = playerSpriteRef.color;
						}
						piece.x = px;
						piece.y = py;
						game.addChild(piece);
						// Animate outward with random velocity and fade out
						var speed = 32 + Math.random() * 32;
						var dx = Math.cos(angle) * speed;
						var dy = Math.sin(angle) * speed - 10 + Math.random() * 20;
						tween(piece, {
							x: px + dx * 16,
							y: py + dy * 16,
							alpha: 0
						}, {
							duration: 700 + Math.random() * 200,
							easing: tween.easeOutCubic,
							onComplete: function onComplete() {
								piece.destroy();
							}
						});
					})(p);
				}
				// Hide player sprite immediately
				player.visible = false;
			}
			isGameOver = true;
			// Delay restart until after explosion animation
			LK.setTimeout(function () {
				startLevel(selectedLevel);
			}, 800);
			return;
		}
	}
	// Score: increase as player passes obstacles
	for (var j = 0; j < obstacles.length; j++) {
		var o = obstacles[j];
		if (!o.passed && o.x + 60 < player.x) {
			o.passed = true;
			score += 1;
			scoreTxt.setText(score);
		}
	}
	// Win condition: pass 10 obstacles (easy), 15 (medium), 20 (hard), 30 (Erin’s atventure continuation), 40 (Dash)
	var winScores = [10, 15, 20, 30, 40];
	if (score >= winScores[selectedLevel]) {
		isGameOver = true;
		// Mark level as completed for coin claim
		storage.lastCompletedLevel = selectedLevel;
		if (!storage.claimed) storage.claimed = {};
		storage.claimed[selectedLevel] = storage.claimed[selectedLevel] || false;
		// Award +150 coins if Erin’s atventure continuation (index 3)
		if (selectedLevel === 3) {
			storage.coins = (storage.coins || 0) + 150;
		}
		LK.setTimeout(function () {
			showLevelIntro();
		}, 600);
		return;
	}
	// Spawn new obstacles
	if (obstacles.length === 0 || 2048 - lastObstacleX > OBSTACLE_MIN_GAP + Math.floor(Math.random() * (OBSTACLE_MAX_GAP - OBSTACLE_MIN_GAP))) {
		spawnObstacle();
	}
};
// (gameover event handler removed, as game over popup is never shown)

===================================================================
--- original.js
+++ change.js
@@ -518,10 +518,10 @@
 		}
 		if (claimBtnY !== null) {
 			btnY = claimBtnY + 250;
 		}
-		// Move button further to the right
-		backToMenuBtn.x = 2048 / 2 + 400;
+		// Move button even further to the right
+		backToMenuBtn.x = 2048 / 2 + 700;
 		backToMenuBtn.y = btnY;
 		backToMenuBtn.interactive = true;
 		backToMenuBtn.buttonMode = true;
 		backToMenuBtn.visible = true;