===================================================================
--- original.js
+++ change.js
@@ -1,5 +1,10 @@
 /**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
 * Classes
 ****/ 
 // test
 var ButtonBot = Container.expand(function () {
@@ -12,17 +17,31 @@
 	self.down = function (x, y, obj) {
 		if (!player.inAir && !player.doubleJump) {
 			player.rotation -= Math.PI / 2.25; // Rotate 80 degrees counter-clockwise
 		} else if (player.inAir || player.doubleJump) {
-			player.y = 2732 / 2 - 250;
-			player.inAir = false;
-			player.doubleJump = false;
+			tween(player, {
+				y: 2732 / 2 - 250
+			}, {
+				duration: 100,
+				onFinish: function onFinish() {
+					player.inAir = false;
+					player.doubleJump = false;
+					player.y = 2732 / 2 - 250;
+				}
+			});
 		}
 		if (player.inAir || player.doubleJump) {
 			player.rotation -= Math.PI / 2.25; // Rotate 80 degrees counter-clockwise
-			player.y = 2732 / 2 - 250;
-			player.inAir = false;
-			player.doubleJump = false;
+			tween(player, {
+				y: 2732 / 2 - 250
+			}, {
+				duration: 100,
+				onFinish: function onFinish() {
+					player.inAir = false;
+					player.doubleJump = false;
+					player.y = 2732 / 2 - 250;
+				}
+			});
 		}
 	};
 	// Add up event to reset rotation
 	self.up = function (x, y, obj) {
@@ -44,14 +63,45 @@
 	self.down = function (x, y, obj) {
 		if (!player.doubleJump) {
 			if (player.inAir) {
 				player.doubleJump = true;
-				player.y -= 400; // Double jump height
-				player.rotation -= Math.PI * 2;
+				tween(player, {
+					y: player.y - 400,
+					rotation: player.rotation - Math.PI * 2
+				}, {
+					duration: 230,
+					easing: tween.easeInOut,
+					onFinish: function onFinish() {
+						tween(player, {
+							y: 2732 / 2 - 250
+						}, {
+							duration: 500,
+							onFinish: function onFinish() {
+								player.inAir = false;
+								player.doubleJump = false;
+								player.y = 2732 / 2 - 250;
+							}
+						});
+					}
+				});
 				return;
 			}
 			player.inAir = true;
-			player.y -= 400; // Initial jump height
+			tween(player, {
+				y: player.y - 400
+			}, {
+				duration: 100,
+				onFinish: function onFinish() {
+					tween(player, {
+						y: 2732 / 2 - 250
+					}, {
+						duration: 700,
+						onFinish: function onFinish() {
+							player.inAir = false;
+						}
+					});
+				}
+			});
 		}
 	};
 });
 // Create a player class
@@ -107,10 +157,18 @@
 }));
 ball.x = ball.width / 2 - 100; // Shift ball 100 pixels to the left
 ball.y = 2732 / 2 - 300; // Center ball vertically
 LK.setTimeout(function () {
-	ball.x += 400;
-	ball.destroy(); // Remove the ball after it moves 200 pixels
+	tween(ball, {
+		x: ball.x + 400
+	}, {
+		duration: 360,
+		// Reduced duration to double the speed 
+		easing: tween.linear,
+		onFinish: function onFinish() {
+			ball.destroy(); // Remove the ball after it moves 200 pixels 
+		}
+	});
 }, 1500);
 game.down = function (x, y, obj) {};
 var player = game.addChild(new Player());
 player.x = player.width / 2 + 200; // Position player 200 units to the right of the center left of the screen