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

/**** 
* Classes
****/ 
// 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;
});
// Hazard (Starbucks coffee cup) class
var Hazard = Container.expand(function () {
	var self = Container.call(this);
	var hazardAsset = self.attachAsset('hazard', {
		anchorX: 0.5,
		anchorY: 1
	});
	self.width = hazardAsset.width;
	self.height = hazardAsset.height;
	// Physics properties
	self.vx = 0;
	self.vy = 0;
	self.lastX = 0;
	self.lastY = 0;
	self.lastWasIntersecting = false;
	self.steamTween = null;
	self.warningTween = null;
	// For visual warning (shake/steam)
	self.warningActive = false;
	// Helper: trigger visual warning (shake)
	self.triggerWarning = function () {
		if (self.warningActive) return;
		self.warningActive = true;
		// Simple shake effect using correct tween API
		var origX = self.x;
		self.warningTween = tween.to(self, {
			x: origX + 20
		}, 80).yoyo(true).repeat(3).onComplete(function () {
			self.x = origX;
			self.warningActive = false;
		}).start();
	};
	// Helper: trigger steam (alpha pulse)
	self.triggerSteam = function () {
		if (self.steamTween) return;
		var asset = hazardAsset;
		self.steamTween = tween.to(asset, {
			alpha: 0.5
		}, 120).yoyo(true).repeat(2).onComplete(function () {
			asset.alpha = 1;
			self.steamTween = null;
		}).start();
	};
	// Update method (called every frame)
	self.update = function () {
		// Save last position for event triggers
		self.lastX = typeof self.lastX === "number" ? self.x : self.x;
		self.lastY = typeof self.lastY === "number" ? self.y : self.y;
		// Move horizontally toward player
		var targetX = player.x;
		if (self.x < targetX - 40) {
			// If far behind, speed up a bit
			self.vx = Math.min(PLAYER_SPEED * 0.9, (targetX - self.x) * 0.08 + 6);
		} else if (self.x > targetX + 40) {
			// If ahead (shouldn't happen), slow down
			self.vx = -6;
		} else {
			// Normal pace
			self.vx = PLAYER_SPEED * 0.7;
		}
		// Adaptive speed: if player is slow, hazard speeds up
		if (player.vx === 0 && self.x < player.x - 120) {
			self.vx += 4;
		}
		self.x += self.vx;
		// Follow player's Y/platform (find closest platform under player)
		var closestPlat = null;
		var minDist = 99999;
		for (var i = 0; i < platforms.length; i++) {
			var plat = platforms[i];
			var dx = Math.abs(self.x - (plat.x + plat.width / 2));
			if (dx < plat.width / 2 + 60) {
				var dy = Math.abs(player.y - plat.y);
				if (dy < minDist) {
					minDist = dy;
					closestPlat = plat;
				}
			}
		}
		if (closestPlat) {
			// Smoothly move to platform Y
			var targetY = closestPlat.y;
			self.y += (targetY - self.y) * 0.18;
		}
		// Visual warning if close to player
		if (Math.abs(self.x - player.x) < 350) {
			self.triggerWarning();
			self.triggerSteam();
		}
		// Update lastX/lastY for event triggers
		self.lastX = self.x;
		self.lastY = self.y;
	};
	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
****/ 
// --- Game Variables ---
// Tween for animations (jump, enemy movement, etc)
// --- Asset Initialization (shapes) ---
// Sun and cloud assets (example IDs, replace with real asset IDs as needed)
var GRAVITY = 2.2;
var JUMP_VELOCITY = -54;
var PLAYER_SPEED = 16;
var SCROLL_SPEED = 10;
var LEVEL_LENGTH = 2048 * 3; // 3 screens wide
var player;
var platforms = [];
var coins = [];
var coffeeHouse = null;
var hazard = null; // Starbucks coffee cup hazard (global)
var cameraX = 0;
var score = 0;
var distance = 0;
var gameOver = false;
// --- GUI ---
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 numPlatforms = 50;
	var platSpacingX = 950; // Further increased horizontal spacing for much more space
	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
		var coin = new Coin();
		coin.x = plat.x + plat.width / 2;
		coin.y = plat.y - 80;
		coins.push(coin);
		game.addChild(coin);
	}
	// 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 ---
function resetPlayer() {
	if (player) player.destroy();
	player = new Player();
	// Place player on the start platform if it exists
	if (platforms.length > 0) {
		player.x = platforms[0].x + platforms[0].width / 2;
		player.y = platforms[0].y;
	} else {
		player.x = 200;
		player.y = 2200;
	}
	player.vx = 0;
	player.vy = 0;
	player.isOnGround = false;
	game.addChild(player);
}
// --- Camera ---
function updateCamera() {
	// Camera follows player, but clamps to level bounds
	cameraX = player.x - 600;
	if (cameraX < 0) cameraX = 0;
	if (cameraX > LEVEL_LENGTH - 2048) cameraX = LEVEL_LENGTH - 2048;
	// 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;
}
// --- 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;
	}
};
game.up = function (x, y, obj) {
	moveDir = 0;
};
game.move = function (x, y, obj) {
	// Allow drag to change direction
	if (x < 2048 / 2) {
		moveDir = -1;
	} else {
		moveDir = 1;
	}
};
// --- 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;
			} else if (player.vy < 0) {
				// Hitting head
				player.y = plat.y + plat.height + player.height;
				player.vy = 0;
			}
			collidedY = true;
		}
	}
	// --- Coin 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
		})) {
			// Collect coin
			score += 1;
			scoreTxt.setText(score);
			coin.destroy();
			coins.splice(i, 1);
		}
	}
	// --- Hazard Update & Collision ---
	if (hazard) {
		hazard.update();
		// Move hazard to screen position
		hazard.xScreen = hazard.x - cameraX;
		hazard.yScreen = hazard.y;
		hazard.x = hazard.xScreen;
		hazard.y = hazard.yScreen;
		// Check collision with player (AABB)
		var hazardBox = {
			x: hazard.x - hazard.width / 2,
			y: hazard.y - hazard.height,
			width: hazard.width,
			height: hazard.height
		};
		var playerBox = {
			x: player.x - player.width / 2,
			y: player.y - player.height,
			width: player.width,
			height: player.height
		};
		// Only trigger on the exact frame of collision
		if (!hazard.lastWasIntersecting && intersectsAABB(hazardBox, playerBox)) {
			LK.effects.flashScreen(0xff0000, 1000);
			gameOver = true;
			LK.showGameOver();
			return;
		}
		hazard.lastWasIntersecting = intersectsAABB(hazardBox, playerBox);
	}
	// --- Camera & Distance ---
	updateCamera();
	// Move all objects to screen position
	for (var i = 0; i < platforms.length; i++) {
		platforms[i].x = platforms[i].xScreen;
	}
	for (var i = 0; i < coins.length; i++) {
		coins[i].x = coins[i].xScreen;
	}
	player.x = player.xScreen;
	// --- 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);
		gameOver = true;
		LK.showGameOver();
		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);
		LK.showYouWin();
		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);
			LK.showYouWin();
			gameOver = true;
			return;
		}
	}
};
// --- Game Start ---
function startGame() {
	score = 0;
	distance = 0;
	gameOver = false;
	scoreTxt.setText(score);
	distTxt.setText(distance + "m");
	createLevel();
	resetPlayer();
	// Spawn hazard at start of level
	if (hazard) {
		hazard.destroy();
		hazard = null;
	}
	hazard = new Hazard();
	if (platforms.length > 0) {
		// Place hazard a bit behind player on start platform
		hazard.x = platforms[0].x + platforms[0].width / 2 - 400;
		hazard.y = platforms[0].y;
	} else {
		hazard.x = 100;
		hazard.y = 2000;
	}
	game.addChild(hazard);
	cameraX = 0;
	moveDir = 0;
}
// --- Start ---
startGame();

===================================================================
--- original.js
+++ change.js
@@ -41,9 +41,9 @@
 		if (self.warningActive) return;
 		self.warningActive = true;
 		// Simple shake effect using correct tween API
 		var origX = self.x;
-		self.warningTween = tween(self).to({
+		self.warningTween = tween.to(self, {
 			x: origX + 20
 		}, 80).yoyo(true).repeat(3).onComplete(function () {
 			self.x = origX;
 			self.warningActive = false;