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

/**** 
* Classes
****/ 
// Bullet class
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	// Use the new bullet figure asset
	var bulletAsset = self.attachAsset('bulletFigure', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = bulletAsset.width;
	self.height = bulletAsset.height;
	self.vx = 40; // Bullet speed (right)
	self.vy = 0; // Add vy for vertical movement
	self.active = true;
	self.lastX = 0;
	self.lastY = 0;
	self.isControlled = false; // If true, player can control direction
	self.update = function () {
		self.lastX = self.x;
		self.lastY = self.y;
		// If controlled, vx/vy may be set by player, else keep moving
		self.x += self.vx;
		self.y += self.vy;
	};
	return self;
});
// Coin class
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinAsset = self.attachAsset('coinCircle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = coinAsset.width;
	self.height = coinAsset.height;
	return self;
});
// Enemy class: flies from right to left, tries to hit the player
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyAsset = self.attachAsset('hazard', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = enemyAsset.width;
	self.height = enemyAsset.height;
	self.vx = -8 - Math.random() * 4; // Move left, much slower speed
	self.lastX = 0;
	self.lastWasIntersecting = false;
	self.update = function () {
		self.lastX = self.x;
		self.x += self.vx;
	};
	return self;
});
// Platform class
var Platform = Container.expand(function () {
	var self = Container.call(this);
	var platAsset = self.attachAsset('platformBox', {
		anchorX: 0,
		anchorY: 0
	});
	self.width = platAsset.width;
	self.height = platAsset.height;
	return self;
});
// Player character class
var Player = Container.expand(function () {
	var self = Container.call(this);
	// Attach player asset (red box)
	var playerAsset = self.attachAsset('playerBox', {
		anchorX: 0.5,
		anchorY: 1
	});
	// Physics properties
	self.vx = 0;
	self.vy = 0;
	self.isOnGround = false;
	self.width = playerAsset.width;
	self.height = playerAsset.height;
	// For jump control
	self.jumpRequested = false;
	// Touch down on player (for jump)
	self.down = function (x, y, obj) {
		// Only allow jump if on ground
		if (self.isOnGround) {
			self.jumpRequested = true;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87ceeb // Sky blue
});

/**** 
* Game Code
****/ 
// New bullet figure asset (example: blue ellipse, unique id)
// Sun and cloud assets (example IDs, replace with real asset IDs as needed)
// --- Asset Initialization (shapes) ---
// Tween for animations (jump, enemy movement, etc)
// --- Game Variables ---
var GRAVITY = 2.2;
var JUMP_VELOCITY = -54;
var PLAYER_SPEED = 16;
var SCROLL_SPEED = 10;
// --- Multi-level support ---
var MAX_LEVELS = 5;
var currentLevel = 1;
var inLobby = false;
// Level-specific parameters (could be expanded for more variety)
var LEVEL_CONFIGS = [{
	numPlatforms: 10,
	platSpacingX: 950,
	enemySpeed: 1.0
}, {
	numPlatforms: 10,
	platSpacingX: 900,
	enemySpeed: 1.1
}, {
	numPlatforms: 10,
	platSpacingX: 850,
	enemySpeed: 1.2
}, {
	numPlatforms: 10,
	platSpacingX: 800,
	enemySpeed: 1.3
}, {
	numPlatforms: 10,
	platSpacingX: 950,
	enemySpeed: 1.4
}];
// LEVEL_LENGTH will be set per level
var LEVEL_LENGTH = 950 * 149 + 600 + 500; // default, will be overwritten
var player;
var platforms = [];
var coins = [];
var bullets = []; // Bullets array for shooting
var enemies = []; // Array for flying enemies
var coffeeHouse = null;
var cameraX = 0;
var score = 0;
var distance = 0;
var gameOver = false;
// --- Lobby GUI ---
var lobbyText = null;
var nextLevelBtn = null;
// --- GUI ---
// Hearts (5 total, left-aligned, with spacing)
var heartAssets = [];
var heartSpacing = 120;
var playerLives = 3; // Total lives/can
function updateHearts() {
	for (var i = 0; i < heartAssets.length; i++) {
		if (i < playerLives) {
			heartAssets[i].visible = true;
		} else {
			heartAssets[i].visible = false;
		}
	}
}
for (var i = 0; i < 5; i++) {
	var heart = LK.getAsset('centerCircle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	heart.x = 180 + i * heartSpacing; // Shifted 150px left from previous position
	heart.y = 100;
	LK.gui.top.addChild(heart);
	heartAssets.push(heart);
}
updateHearts();
var scoreTxt = new Text2('0', {
	size: 100,
	fill: 0xFFF700
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var distTxt = new Text2('0m', {
	size: 60,
	fill: 0xFFFFFF
});
distTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(distTxt);
distTxt.y = 110;
// --- Level Generation ---
function createLevel() {
	// Clear old
	for (var i = 0; i < platforms.length; i++) platforms[i].destroy();
	for (var i = 0; i < coins.length; i++) coins[i].destroy();
	if (typeof coffeeHouse !== "undefined" && coffeeHouse) coffeeHouse.destroy();
	platforms = [];
	coins = [];
	coffeeHouse = null;
	// Add sun to the sky
	var sun = LK.getAsset('sun', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	sun.x = 300;
	sun.y = 300;
	game.addChild(sun);
	// Add a few clouds at different positions
	var cloud1 = LK.getAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	cloud1.x = 700;
	cloud1.y = 400;
	game.addChild(cloud1);
	var cloud2 = LK.getAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	cloud2.x = 1400;
	cloud2.y = 600;
	game.addChild(cloud2);
	var cloud3 = LK.getAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	cloud3.x = 2000;
	cloud3.y = 350;
	game.addChild(cloud3);
	// Platform layout: up/down, not fixed order, player can jump between them
	var config = LEVEL_CONFIGS[currentLevel - 1] || LEVEL_CONFIGS[LEVEL_CONFIGS.length - 1];
	var numPlatforms = config.numPlatforms;
	var platSpacingX = config.platSpacingX; // Use level config for spacing
	var platMinY = 800; // Lowered min Y for more vertical play area
	var platMaxY = 1900; // Raised max Y for more vertical play area
	// Calculate max jump height based on physics
	// vy = JUMP_VELOCITY, gravity = GRAVITY
	// maxJumpHeight = - (vy^2) / (2 * gravity)
	var maxJumpHeight = -(JUMP_VELOCITY * JUMP_VELOCITY) / (2 * GRAVITY);
	// Use 90% of maxJumpHeight for margin of error
	var platformGapY = Math.floor(maxJumpHeight * 0.9);
	var lastY = 1800;
	// Add start platform at the very beginning
	var startPlat = new Platform();
	startPlat.x = 100;
	startPlat.y = 2000;
	platforms.push(startPlat);
	game.addChild(startPlat);
	// Place a coin above the start platform
	var startCoin = new Coin();
	startCoin.x = startPlat.x + startPlat.width / 2;
	startCoin.y = startPlat.y - 80;
	coins.push(startCoin);
	game.addChild(startCoin);
	for (var i = 0; i < numPlatforms; i++) {
		var plat = new Platform();
		plat.x = 600 + i * platSpacingX;
		// Alternate up/down, but keep within jumpable range
		if (i === 0) {
			plat.y = lastY;
		} else {
			// Randomly go up or down, but clamp to min/max
			var deltaY = (Math.random() > 0.5 ? -1 : 1) * (platformGapY + Math.floor(Math.random() * 40) - 20); // Small random offset
			plat.y = lastY + deltaY;
			if (plat.y < platMinY) plat.y = platMinY;
			if (plat.y > platMaxY) plat.y = platMaxY;
			lastY = plat.y;
		}
		platforms.push(plat);
		game.addChild(plat);
		// Place a coin above every platform, but rarely replace with a heart (extra life)
		if (Math.random() < 0.07) {
			// ~7% chance, very rare
			var heart = LK.getAsset('centerCircle', {
				anchorX: 0.5,
				anchorY: 0.5
			});
			heart.x = plat.x + plat.width / 2;
			heart.y = plat.y - 80;
			heart.isHeart = true;
			coins.push(heart);
			game.addChild(heart);
		} else {
			var coin = new Coin();
			coin.x = plat.x + plat.width / 2;
			coin.y = plat.y - 80;
			coins.push(coin);
			game.addChild(coin);
		}
		// Add a checkpoint marker every 10th platform (not the first platform)
		if (i > 0 && i % 10 === 0) {
			var checkpoint = LK.getAsset('centerCircle', {
				anchorX: 0.5,
				anchorY: 0.5
			});
			checkpoint.x = plat.x + plat.width / 2;
			checkpoint.y = plat.y - 120;
			checkpoint.width = 120;
			checkpoint.height = 120;
			checkpoint.isCheckpoint = true;
			checkpoint.platformIndex = i;
			game.addChild(checkpoint);
			// Store checkpoint objects in an array for respawn logic
			if (typeof checkpoints === "undefined") checkpoints = [];
			checkpoints.push(checkpoint);
		}
	}
	// Add coffee house on the last platform
	if (platforms.length > 0) {
		var lastPlat = platforms[platforms.length - 1];
		coffeeHouse = LK.getAsset('coffeeHouse', {
			anchorX: 0.5,
			anchorY: 1
		});
		coffeeHouse.x = lastPlat.x + lastPlat.width / 2;
		coffeeHouse.y = lastPlat.y;
		game.addChild(coffeeHouse);
	}
}
// --- Player Initialization ---
// Track the last safe platform index for respawn
var lastSafePlatformIndex = 0;
// Track the platform the player fell from for respawn
var lastFallenPlatformIndex = 0;
function resetPlayer(respawnToLastSafe) {
	if (player) player.destroy();
	player = new Player();
	// Place player on the start platform or the platform where they fell if requested
	if (platforms.length > 0) {
		var platIdx = 0;
		if (respawnToLastSafe && typeof lastFallenPlatformIndex === "number" && lastFallenPlatformIndex >= 0 && lastFallenPlatformIndex < platforms.length) {
			platIdx = lastFallenPlatformIndex;
		} else if (respawnToLastSafe && typeof lastSafePlatformIndex === "number" && lastSafePlatformIndex >= 0 && lastSafePlatformIndex < platforms.length) {
			platIdx = lastSafePlatformIndex;
		}
		player.x = platforms[platIdx].x + platforms[platIdx].width / 2;
		player.y = platforms[platIdx].y;
	} else {
		player.x = 200;
		player.y = 2200;
	}
	player.vx = 0;
	player.vy = 0;
	player.isOnGround = false;
	game.addChild(player);
}
// --- Camera ---
function updateCamera() {
	// Camera always follows player, no clamping
	cameraX = player.x - 600;
	// Move all game objects (except GUI) by -cameraX
	for (var i = 0; i < platforms.length; i++) {
		platforms[i].xScreen = platforms[i].x - cameraX;
	}
	for (var i = 0; i < coins.length; i++) {
		coins[i].xScreen = coins[i].x - cameraX;
	}
	player.xScreen = player.x - cameraX;
	// Move coffeeHouse relative to camera
	if (coffeeHouse && platforms.length > 0) {
		var lastPlat = platforms[platforms.length - 1];
		coffeeHouse.xScreen = coffeeHouse.x - cameraX;
		coffeeHouse.yScreen = coffeeHouse.y;
	}
	// (hazard removed)
}
// --- Utility: AABB collision ---
function intersectsAABB(a, b) {
	return a.x < b.x + b.width && a.x + a.width > b.x && a.y < b.y + b.height && a.y + a.height > b.y;
}
// --- Touch Controls ---
// Touch controls: tap anywhere to jump, hold left/right for movement
var moveDir = 0; // -1 = left, 1 = right, 0 = none
game.down = function (x, y, obj) {
	if (gameOver) return;
	// Convert to game coordinates
	var gx = x + cameraX;
	// Always allow jump on tap down, anywhere
	if (player.isOnGround) {
		player.jumpRequested = true;
	}
	// Hold left/right for movement
	if (x < 2048 / 2) {
		moveDir = -1;
	} else {
		moveDir = 1;
		// Fire a bullet only if the previous tap was an "armed" tap (require two separate taps to fire)
		if (typeof fireArmed === "undefined") fireArmed = false;
		if (!fireArmed) {
			// First tap: arm for firing
			fireArmed = true;
		} else {
			// Second tap: actually fire bullet
			var bullet = new Bullet();
			bullet.x = player.x;
			bullet.y = player.y - player.height / 2;
			bullet.lastX = bullet.x;
			// Set initial direction to right, but allow control
			bullet.vx = 0;
			bullet.vy = 0;
			bullet.isControlled = true; // Mark as controlled
			bullets.push(bullet);
			game.addChild(bullet);
			// Store the controlled bullet reference for move/up
			game.controlledBullet = bullet;
			fireArmed = false; // Reset arming
		}
	}
};
game.up = function (x, y, obj) {
	moveDir = 0;
	// Release bullet control on touch up
	if (game.controlledBullet && game.controlledBullet.isControlled) {
		game.controlledBullet.isControlled = false;
		game.controlledBullet = null;
	}
};
game.move = function (x, y, obj) {
	// Allow drag to change direction
	if (x < 2048 / 2) {
		moveDir = -1;
	} else {
		moveDir = 1;
	}
	// If a controlled bullet exists, update its velocity based on drag direction
	if (game.controlledBullet && game.controlledBullet.isControlled) {
		// Calculate direction from bullet to current pointer
		var bx = game.controlledBullet.x;
		var by = game.controlledBullet.y;
		var gx = x + cameraX;
		var gy = y;
		var dx = gx - bx;
		var dy = gy - by;
		var len = Math.sqrt(dx * dx + dy * dy);
		if (len > 0) {
			// Set bullet speed (fixed magnitude, e.g. 40 px/frame)
			var speed = 40;
			game.controlledBullet.vx = dx / len * speed;
			game.controlledBullet.vy = dy / len * speed;
		}
	}
};
// --- Game Update Loop ---
game.update = function () {
	if (gameOver) return;
	// --- Player Movement ---
	// Horizontal movement
	player.vx = moveDir * PLAYER_SPEED;
	// Apply gravity
	player.vy += GRAVITY;
	// Jump
	if (player.jumpRequested) {
		player.vy = JUMP_VELOCITY;
		player.jumpRequested = false;
		player.isOnGround = false;
	}
	// Move horizontally, check collisions
	player.x += player.vx;
	var collidedX = false;
	for (var i = 0; i < platforms.length; i++) {
		var plat = platforms[i];
		if (intersectsAABB({
			x: player.x - player.width / 2,
			y: player.y - player.height,
			width: player.width,
			height: player.height
		}, {
			x: plat.x,
			y: plat.y,
			width: plat.width,
			height: plat.height
		})) {
			// Collided horizontally, push player out
			if (player.vx > 0) {
				player.x = plat.x - player.width / 2;
			} else if (player.vx < 0) {
				player.x = plat.x + plat.width + player.width / 2;
			}
			collidedX = true;
		}
	}
	// Move vertically, check collisions
	player.y += player.vy;
	var collidedY = false;
	player.isOnGround = false;
	for (var i = 0; i < platforms.length; i++) {
		var plat = platforms[i];
		if (intersectsAABB({
			x: player.x - player.width / 2,
			y: player.y - player.height,
			width: player.width,
			height: player.height
		}, {
			x: plat.x,
			y: plat.y,
			width: plat.width,
			height: plat.height
		})) {
			// Collided vertically
			if (player.vy > 0) {
				// Falling, land on platform
				player.y = plat.y;
				player.vy = 0;
				player.isOnGround = true;
				// Update last safe platform index to this platform
				lastSafePlatformIndex = i;
			} else if (player.vy < 0) {
				// Hitting head
				player.y = plat.y + plat.height + player.height;
				player.vy = 0;
			}
			collidedY = true;
		}
	}
	// --- Coin/Heart Collection ---
	for (var i = coins.length - 1; i >= 0; i--) {
		var coin = coins[i];
		if (intersectsAABB({
			x: player.x - player.width / 2,
			y: player.y - player.height,
			width: player.width,
			height: player.height
		}, {
			x: coin.x - coin.width / 2,
			y: coin.y - coin.height / 2,
			width: coin.width,
			height: coin.height
		})) {
			// If this is a heart (centerCircle), increase playerLives, up to max 5
			if (coin.isHeart) {
				if (playerLives < 5) {
					playerLives++;
					updateHearts();
				}
			} else {
				// Otherwise, it's a coin, increase score
				score += 1;
				scoreTxt.setText(score);
				// Every 20 points, convert to 1 life (up to max 5)
				if (score >= 20) {
					var extraLives = Math.floor(score / 20);
					var livesToAdd = Math.min(extraLives, 5 - playerLives);
					if (livesToAdd > 0) {
						playerLives += livesToAdd;
						updateHearts();
						score -= livesToAdd * 20;
						scoreTxt.setText(score);
					}
				}
			}
			coin.destroy();
			coins.splice(i, 1);
		}
	}
	// --- Checkpoint Collection ---
	// Only mark checkpoint as collected when falling, not on touch
	// (handled in fall logic below)
	// --- Bullets Update ---
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		bullet.update();
		// Remove bullet if off screen (right side)
		if (bullet.lastX <= LEVEL_LENGTH && bullet.x > LEVEL_LENGTH) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Remove bullet if off left or out of vertical bounds
		if (bullet.x < 0 || bullet.y < 0 || bullet.y > 2732) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Render bullet at camera-relative position
		bullet.displayObject = bullet.displayObject || bullet;
		bullet.displayObject.x = bullet.x - cameraX;
		bullet.displayObject.y = bullet.y;
	}
	// --- Enemy Update & Collision ---
	// Delay enemy movement for 3 seconds after game start
	if (typeof enemyStartDelay === "undefined") enemyStartDelay = 180; // 3 seconds at 60fps
	if (enemyStartDelay > 0) {
		enemyStartDelay--;
	} else {
		if (typeof enemySpawnTimer === "undefined") enemySpawnTimer = 0;
		enemySpawnTimer++;
		// Spawn a new enemy every 120-200 frames (randomized)
		if (enemySpawnTimer > 120 + Math.floor(Math.random() * 80)) {
			var enemy = new Enemy();
			// Spawn at right edge, random Y within play area
			enemy.x = cameraX + 2048 + enemy.width / 2;
			// Avoid top 200px and bottom 400px
			enemy.y = 400 + Math.random() * (2100 - 400);
			enemy.lastX = enemy.x;
			enemy.lastWasIntersecting = false;
			enemies.push(enemy);
			game.addChild(enemy);
			enemySpawnTimer = 0;
		}
		// Update and render enemies
		for (var i = enemies.length - 1; i >= 0; i--) {
			var enemy = enemies[i];
			enemy.update();
			// Remove if off left side
			if (enemy.lastX >= -enemy.width && enemy.x < -enemy.width) {
				enemy.destroy();
				enemies.splice(i, 1);
				continue;
			}
			// Render at camera-relative position
			enemy.displayObject = enemy.displayObject || enemy;
			enemy.displayObject.x = enemy.x - cameraX;
			enemy.displayObject.y = enemy.y;
			// --- Bullet-Enemy Collision ---
			var enemyDestroyed = false;
			for (var j = bullets.length - 1; j >= 0; j--) {
				var bullet = bullets[j];
				// Use AABB for bullet-enemy collision
				if (intersectsAABB({
					x: bullet.x - bullet.width / 2,
					y: bullet.y - bullet.height / 2,
					width: bullet.width,
					height: bullet.height
				}, {
					x: enemy.x - enemy.width / 2,
					y: enemy.y - enemy.height / 2,
					width: enemy.width,
					height: enemy.height
				})) {
					// Destroy both bullet and enemy
					bullet.destroy();
					bullets.splice(j, 1);
					enemy.destroy();
					enemies.splice(i, 1);
					// Optionally, add score or effect here
					score += 5;
					scoreTxt.setText(score);
					// Every 20 points, convert to 1 life (up to max 5)
					if (score >= 20) {
						var extraLives = Math.floor(score / 20);
						var livesToAdd = Math.min(extraLives, 5 - playerLives);
						if (livesToAdd > 0) {
							playerLives += livesToAdd;
							updateHearts();
							score -= livesToAdd * 20;
							scoreTxt.setText(score);
						}
					}
					enemyDestroyed = true;
					break;
				}
			}
			if (enemyDestroyed) continue;
			// Check collision with player (only on the frame it starts)
			var isIntersecting = intersectsAABB({
				x: player.x - player.width / 2,
				y: player.y - player.height,
				width: player.width,
				height: player.height
			}, {
				x: enemy.x - enemy.width / 2,
				y: enemy.y - enemy.height / 2,
				width: enemy.width,
				height: enemy.height
			});
			if (!enemy.lastWasIntersecting && isIntersecting) {
				// Player hit by enemy!
				LK.effects.flashScreen(0xff0000, 1000);
				playerLives--;
				updateHearts();
				if (playerLives <= 0) {
					gameOver = true;
					LK.showGameOver();
					return;
				}
				// Do not respawn or move player, just continue playing
			}
			enemy.lastWasIntersecting = isIntersecting;
		}
	} // end else for enemyStartDelay
	// --- Hazard Update & Collision ---
	// (hazard removed)
	// --- Camera & Distance ---
	updateCamera();
	// Move all objects to screen position (for rendering only, do not overwrite world position)
	for (var i = 0; i < platforms.length; i++) {
		platforms[i].displayObject = platforms[i].displayObject || platforms[i];
		platforms[i].displayObject.x = platforms[i].xScreen;
		platforms[i].displayObject.y = platforms[i].y;
	}
	for (var i = 0; i < coins.length; i++) {
		coins[i].displayObject = coins[i].displayObject || coins[i];
		coins[i].displayObject.x = coins[i].xScreen;
		coins[i].displayObject.y = coins[i].y;
	}
	player.displayObject = player.displayObject || player;
	player.displayObject.x = player.xScreen;
	player.displayObject.y = player.y;
	// Move coffeeHouse to screen position if exists
	if (coffeeHouse && typeof coffeeHouse.xScreen !== "undefined") {
		coffeeHouse.x = coffeeHouse.xScreen;
		coffeeHouse.y = coffeeHouse.yScreen;
	}
	// (hazard removed)
	// --- Distance ---
	distance = Math.floor((player.x + cameraX) / 10);
	distTxt.setText(distance + "m");
	// --- Win/Lose Conditions ---
	// Fall off screen
	if (player.y > 2732) {
		LK.effects.flashScreen(0xff0000, 1000);
		playerLives--;
		updateHearts();
		// Find the platform the player was last above before falling
		if (typeof lastFallenPlatformIndex === "undefined") lastFallenPlatformIndex = 0;
		lastFallenPlatformIndex = 0;
		var minDist = Infinity;
		for (var i = 0; i < platforms.length; i++) {
			var plat = platforms[i];
			// Check if player was horizontally above this platform when falling
			if (player.x + player.width / 2 >= plat.x && player.x - player.width / 2 <= plat.x + plat.width) {
				// Find the closest platform vertically below the player
				var dy = player.y - plat.y;
				if (dy >= 0 && dy < minDist) {
					minDist = dy;
					lastFallenPlatformIndex = i;
				}
			}
		}
		// Find the nearest checkpoint at or before the fallen platform
		var checkpointToRespawn = 0;
		if (typeof checkpoints !== "undefined" && checkpoints.length) {
			var closestCheckpointIndex = -1;
			for (var i = 0; i < checkpoints.length; i++) {
				var checkpoint = checkpoints[i];
				if (checkpoint.platformIndex <= lastFallenPlatformIndex) {
					if (closestCheckpointIndex === -1 || checkpoint.platformIndex > checkpoints[closestCheckpointIndex].platformIndex) {
						closestCheckpointIndex = i;
					}
				}
			}
			if (closestCheckpointIndex !== -1) {
				checkpointToRespawn = checkpoints[closestCheckpointIndex].platformIndex;
				// Mark checkpoint as collected
				if (!checkpoints[closestCheckpointIndex].collected) {
					checkpoints[closestCheckpointIndex].collected = true;
					lastCheckpointIndex = checkpointToRespawn;
					checkpoints[closestCheckpointIndex].alpha = 0.5;
				}
			}
		}
		if (playerLives <= 0) {
			gameOver = true;
			LK.showGameOver();
			return;
		} else {
			// Respawn player at the nearest checkpoint (every 10th platform), or at the platform they fell from if no checkpoint reached
			if (typeof checkpointToRespawn !== "undefined" && checkpointToRespawn > 0 && checkpointToRespawn < platforms.length) {
				lastFallenPlatformIndex = checkpointToRespawn;
			}
			resetPlayer(true);
			// Optionally, move camera to player
			updateCamera();
			return;
		}
	}
	// Reached coffee house (win condition)
	if (coffeeHouse && intersectsAABB({
		x: player.x - player.width / 2,
		y: player.y - player.height,
		width: player.width,
		height: player.height
	}, {
		x: coffeeHouse.x - coffeeHouse.width / 2,
		y: coffeeHouse.y - coffeeHouse.height,
		width: coffeeHouse.width,
		height: coffeeHouse.height
	})) {
		LK.effects.flashScreen(0x00ff00, 1000);
		LK.setScore(score);
		showLobby("You reached the coffeehouse! Level " + currentLevel + " complete!");
		gameOver = true;
		return;
	}
	// Win condition: player reaches the last platform
	if (platforms.length > 0) {
		var lastPlat = platforms[platforms.length - 1];
		if (player.x + player.width / 2 >= lastPlat.x && player.x - player.width / 2 <= lastPlat.x + lastPlat.width && player.y >= lastPlat.y && player.y - player.height <= lastPlat.y + lastPlat.height) {
			LK.effects.flashScreen(0x00ff00, 1000);
			LK.setScore(score);
			showLobby("Level " + currentLevel + " complete!");
			gameOver = true;
			return;
		}
	}
};
// --- Game Start ---
function startGame() {
	score = 0;
	distance = 0;
	gameOver = false;
	playerLives = 3;
	scoreTxt.setText(score);
	distTxt.setText(distance + "m");
	// Reset enemies array and destroy old enemies if any
	if (typeof enemies !== "undefined" && enemies && enemies.length) {
		for (var i = 0; i < enemies.length; i++) {
			if (enemies[i] && typeof enemies[i].destroy === "function") enemies[i].destroy();
		}
	}
	enemies = [];
	// Reset checkpoints and lastCheckpointIndex
	checkpoints = [];
	lastCheckpointIndex = 0;
	createLevel();
	resetPlayer();
	updateHearts();
	// (hazard removed)
	cameraX = 0;
	moveDir = 0;
	enemyStartDelay = 180; // 3 seconds at 60fps
	inLobby = false;
	// Hide lobby UI if visible
	if (lobbyText) lobbyText.visible = false;
	if (nextLevelBtn) nextLevelBtn.visible = false;
}
// --- Lobby and Next Level ---
function showLobby(message) {
	inLobby = true;
	// Show lobby message
	if (!lobbyText) {
		lobbyText = new Text2(message, {
			size: 90,
			fill: "#fff",
			align: "center"
		});
		lobbyText.anchor.set(0.5, 0.5);
		lobbyText.x = 2048 / 2 - 400;
		lobbyText.y = 900;
		LK.gui.center.addChild(lobbyText);
	} else {
		lobbyText.setText(message);
		lobbyText.visible = true;
	}
	// Show next level button if not last level
	if (currentLevel < MAX_LEVELS) {
		if (!nextLevelBtn) {
			nextLevelBtn = new Text2("Next Level", {
				size: 100,
				fill: 0x00FF00,
				align: "center"
			});
			nextLevelBtn.anchor.set(0.5, 0.5);
			nextLevelBtn.x = 2048 / 2;
			nextLevelBtn.y = 1200;
			LK.gui.center.addChild(nextLevelBtn);
			// Add touch event
			nextLevelBtn.down = function (x, y, obj) {
				inLobby = false;
				gameOver = false;
				nextLevel();
			};
		}
		nextLevelBtn.visible = true;
		// Hide lobbyText.down for next level
		lobbyText.down = null;
	} else {
		// Last level completed
		if (nextLevelBtn) nextLevelBtn.visible = false;
		if (lobbyText) lobbyText.setText("Congratulations! All levels complete!");
		// Allow restart by tapping the lobby text
		lobbyText.down = function (x, y, obj) {
			inLobby = false;
			currentLevel = 1;
			gameOver = false;
			startLevel(currentLevel);
		};
	}
}
function nextLevel() {
	if (currentLevel < MAX_LEVELS) {
		currentLevel++;
		// Optionally: increase difficulty here
		startLevel(currentLevel);
	}
}
function startLevel(levelNum) {
	// Set level-specific parameters
	var config = LEVEL_CONFIGS[levelNum - 1] || LEVEL_CONFIGS[LEVEL_CONFIGS.length - 1];
	// Update global variables for this level
	LEVEL_LENGTH = config.platSpacingX * (config.numPlatforms - 1) + 600 + 500;
	// Optionally: adjust enemy speed, platform count, etc.
	// (You can use config.enemySpeed in Enemy class if desired)
	// Reset game state
	startGame();
}
// --- Start ---
startLevel(currentLevel);

===================================================================
--- original.js
+++ change.js
@@ -841,9 +841,9 @@
 			fill: "#fff",
 			align: "center"
 		});
 		lobbyText.anchor.set(0.5, 0.5);
-		lobbyText.x = 2048 / 2 - 100;
+		lobbyText.x = 2048 / 2 - 400;
 		lobbyText.y = 900;
 		LK.gui.center.addChild(lobbyText);
 	} else {
 		lobbyText.setText(message);