/**** 
* Classes
****/ 
// Class for Bubbles
var Bubble = Container.expand(function () {
	var self = Container.call(this);
	var bubbleGraphics = self.attachAsset('bubble', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -5;
	self.update = function () {
		self.x += self.speed;
	};
});
//<Assets used in the game will automatically appear here>
// Class for the Dragon character
var Dragon = Container.expand(function () {
	var self = Container.call(this);
	var dragonGraphics = self.attachAsset('dragon', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.shootBubble = function () {
		var bubble = new Bubble();
		bubble.x = self.x;
		bubble.y = self.y;
		// If the dragon is looking right, the bubble should move to the right
		if (self.scale.x == 1) {
			bubble.speed = 5;
		} else {
			// If the dragon is looking left, the bubble should move to the left
			bubble.speed = -5;
		}
		game.addChild(bubble);
		bubbles.push(bubble);
	};
});
// Class for Enemies
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Enemy movement logic
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000 //Init game with black background 
});

/**** 
* Game Code
****/ 
//<Assets used in the game will automatically appear here>
// Handle mouse move events to move the dragon
var tween = LK.require("@upit/tween.v1");
game.move = function (x, y, obj) {
	dragon.x = x;
	if (dragon.x > 1024) {
		dragon.scale.x = -1;
	} else {
		dragon.scale.x = 1;
	}
};
var dragon = game.addChild(new Dragon());
dragon.x = 1024; // Center horizontally
dragon.y = 2732 - 50 - dragon.height / 2; // Position the dragon on top of the floor
var bubbles = [];
var enemies = [];
// Handle game updates
game.update = function () {
	// Update bubbles
	for (var i = bubbles.length - 1; i >= 0; i--) {
		var bubble = bubbles[i];
		bubble.update();
		if (bubble.y < -50) {
			bubble.destroy();
			bubbles.splice(i, 1);
		}
	}
	// Check for bubble-enemy collisions
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		for (var j = bubbles.length - 1; j >= 0; j--) {
			var bubble = bubbles[j];
			if (bubble.intersects(enemy)) {
				// Capture enemy
				enemy.destroy();
				enemies.splice(i, 1);
				bubble.destroy();
				bubbles.splice(j, 1);
				break;
			}
		}
	}
};
// Handle touch events for shooting bubbles
var lastShot = 0;
var lastClick = 0;
game.down = function (x, y, obj) {
	var now = Date.now();
	if (now - lastShot > 500) {
		dragon.shootBubble();
		lastShot = now;
	}
	if (now - lastClick < 200) {
		// Make the dragon jump using a smooth animation
		tween(dragon, {
			y: dragon.y - 200
		}, {
			duration: 500,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				// After the jump, make the dragon fall back to the original position
				tween(dragon, {
					y: 2732 - 50 - dragon.height / 2
				}, {
					duration: 500,
					easing: tween.easeIn
				});
			}
		});
	}
	lastClick = now;
};
// Add a floor to the bottom of the screen
for (var i = 0; i < 21; i++) {
	var floor = LK.getAsset('floor', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: i * 100,
		y: 2732 - 50
	});
	game.addChild(floor);
}

===================================================================
--- original.js
+++ change.js
@@ -1,10 +1,5 @@
 /**** 
-* Plugins
-****/ 
-var tween = LK.import("@upit/tween.v1");
-
-/**** 
 * Classes
 ****/ 
 // Class for Bubbles
 var Bubble = Container.expand(function () {
@@ -64,8 +59,9 @@
 * Game Code
 ****/ 
 //<Assets used in the game will automatically appear here>
 // Handle mouse move events to move the dragon
+var tween = LK.require("@upit/tween.v1");
 game.move = function (x, y, obj) {
 	dragon.x = x;
 	if (dragon.x > 1024) {
 		dragon.scale.x = -1;
@@ -119,17 +115,18 @@
 		tween(dragon, {
 			y: dragon.y - 200
 		}, {
 			duration: 500,
-			easing: tween.easeOut
-		}).then(function () {
-			// After the jump, make the dragon fall back to the original position
-			tween(dragon, {
-				y: 2732 - 50 - dragon.height / 2
-			}, {
-				duration: 500,
-				easing: tween.easeIn
-			});
+			easing: tween.easeOut,
+			onFinish: function onFinish() {
+				// After the jump, make the dragon fall back to the original position
+				tween(dragon, {
+					y: 2732 - 50 - dragon.height / 2
+				}, {
+					duration: 500,
+					easing: tween.easeIn
+				});
+			}
 		});
 	}
 	lastClick = now;
 };