===================================================================
--- original.js
+++ change.js
@@ -88,9 +88,9 @@
 			} else {
 				trail.x = 0;
 			}
 			trail.y = self && self.y !== undefined ? self.y + (leftPlayerGraphics ? leftPlayerGraphics.height / 2 : 0) : 0;
-			self.addChild(trail);
+			game.addChildAt(trail, game.getChildIndex(self));
 		}
 	};
 });
 var LineObstacle = Container.expand(function () {
@@ -381,9 +381,9 @@
 			} else {
 				trail.x = 0;
 			}
 			trail.y = self && self.y !== undefined ? self.y + (rightPlayerGraphics ? rightPlayerGraphics.height / 2 : 0) : 0;
-			self.addChild(trail);
+			game.addChildAt(trail, game.getChildIndex(self));
 		}
 	};
 });
 //<Assets used in the game will automatically appear here>
@@ -975,77 +975,75 @@
 				leftPlayer.y = player.y;
 				game.addChild(leftPlayer);
 			}
 			if (leftPlayer) {
-				if (animationDuration > 0) {
-					leftPlayer.x += (leftTargetX - leftPlayer.x) / animationDuration;
-					animationDuration--;
-				}
-				if (LK.ticks % 4 == 0) {
-					var trail = new Trail();
-					trail.scale.x = 0.5;
-					trail.scale.y = 0.5;
-					if (leftPlayer && leftPlayer.x !== undefined) {
-						trail.x = leftPlayer.x;
-					} else {
-						trail.x = 0;
+				leftPlayer.update = function () {
+					if (animationDuration > 0) {
+						leftPlayer.x += (leftTargetX - leftPlayer.x) / animationDuration;
+						animationDuration--;
 					}
-					trail.y = leftPlayer && leftPlayer.y !== undefined ? leftPlayer.y + (leftPlayer.height ? leftPlayer.height / 2 : 0) : 0;
-					game.addChildAt(trail, game.getChildIndex(this));
-				}
-			}
-			;
-		}
-		if (!rightPlayer) {
-			rightPlayer = new RightPlayer();
-			rightPlayer.x = player.x;
-			rightPlayer.y = player.y;
-			game.addChild(rightPlayer);
-			if (rightPlayer) {
-				if (animationDuration > 0) {
-					rightPlayer.x += (rightTargetX - rightPlayer.x) / animationDuration;
-					animationDuration--;
-				}
-				if (LK.ticks % 4 == 0) {
-					var trail = new Trail();
-					trail.scale.x = 0.5;
-					trail.scale.y = 0.5;
-					if (rightPlayer && rightPlayer.x !== undefined) {
-						trail.x = rightPlayer.x;
-					} else {
-						trail.x = 0;
-					}
-					trail.y = rightPlayer && rightPlayer.y !== undefined ? rightPlayer.y + (rightPlayer.height ? rightPlayer.height / 2 : 0) : 0;
-					game.addChildAt(trail, game.getChildIndex(this));
-				}
-			}
-			;
-		}
-		// Initialize update functions after adding to game
-		if (leftPlayer) {
-			leftPlayer.update = function () {
-				if (animationDuration > 0) {
-					leftPlayer.x += (leftTargetX - leftPlayer.x) * 0.1; // Smooth movement using linear interpolation
-					animationDuration--;
-					titleButton.update = function () {
-						if (LK.ticks % 60 < 30) {
-							titleButton.y += 1;
-						} else {
-							titleButton.y -= 1;
-						}
-					};
 					if (LK.ticks % 4 == 0) {
 						var trail = new Trail();
 						trail.scale.x = 0.5;
 						trail.scale.y = 0.5;
-						trail.x = leftPlayer ? leftPlayer.x : 0;
-						trail.y = leftPlayer && leftPlayer.y !== undefined ? leftPlayer.y + (leftPlayer.height ? leftPlayer.height / 2 : 0) : 0;
-						leftPlayer.addChild(trail);
+						if (leftPlayer && leftPlayer.x !== undefined) {
+							trail.x = leftPlayer.x;
+						} else {
+							trail.x = 0;
+						}
+						trail.y = this.y + (leftPlayer.height ? leftPlayer.height / 2 : 0);
+						game.addChildAt(trail, game.getChildIndex(this));
 					}
+				};
+			}
+			if (!rightPlayer) {
+				rightPlayer = new RightPlayer();
+				rightPlayer.x = player.x;
+				rightPlayer.y = player.y;
+				game.addChild(rightPlayer);
+				if (rightPlayer) {
+					rightPlayer.update = function () {
+						if (animationDuration > 0) {
+							rightPlayer.x += (rightTargetX - rightPlayer.x) / animationDuration;
+							animationDuration--;
+						}
+						if (LK.ticks % 4 == 0) {
+							var trail = new Trail();
+							trail.scale.x = 0.5;
+							trail.scale.y = 0.5;
+							if (rightPlayer && rightPlayer.x !== undefined) {
+								trail.x = rightPlayer.x;
+							} else {
+								trail.x = 0;
+							}
+							trail.y = this.y + (rightPlayer.height ? rightPlayer.height / 2 : 0);
+							game.addChildAt(trail, game.getChildIndex(this));
+						}
+					};
 				}
-				;
-			};
-			if (rightPlayer) {
+				// Initialize update functions after adding to game
+				leftPlayer.update = function () {
+					if (animationDuration > 0) {
+						leftPlayer.x += (leftTargetX - leftPlayer.x) * 0.1; // Smooth movement using linear interpolation
+						animationDuration--;
+						titleButton.update = function () {
+							if (LK.ticks % 60 < 30) {
+								titleButton.y += 1;
+							} else {
+								titleButton.y -= 1;
+							}
+						};
+						if (LK.ticks % 4 == 0) {
+							var trail = new Trail();
+							trail.scale.x = 0.5;
+							trail.scale.y = 0.5;
+							trail.x = leftPlayer ? leftPlayer.x : 0;
+							trail.y = leftPlayer && leftPlayer.height ? leftPlayer.y + leftPlayer.height / 2 : 0;
+							game.addChildAt(trail, game.getChildIndex(leftPlayer));
+						}
+					}
+					;
+				};
 				rightPlayer.update = function () {
 					if (animationDuration > 0) {
 						rightPlayer.x += (rightTargetX - rightPlayer.x) * 0.1; // Smooth movement using linear interpolation
 						animationDuration--;
@@ -1061,10 +1059,10 @@
 						var trail = new Trail();
 						trail.scale.x = 0.5;
 						trail.scale.y = 0.5;
 						trail.x = rightPlayer ? rightPlayer.x : 0;
-						trail.y = rightPlayer && rightPlayer.y !== undefined ? rightPlayer.y + (rightPlayer.height ? rightPlayer.height / 2 : 0) : 0;
-						rightPlayer.addChild(trail);
+						trail.y = rightPlayer && rightPlayer.height ? rightPlayer.y + rightPlayer.height / 2 : 0;
+						game.addChildAt(trail, game.getChildIndex(rightPlayer));
 					}
 				};
 			}
 			;
@@ -1116,9 +1114,9 @@
 					var trail = new Trail();
 					trail.scale.x = 0.5;
 					trail.scale.y = 0.5;
 					trail.x = leftPlayer ? leftPlayer.x : 0;
-					trail.y = leftPlayer && leftPlayer.y !== undefined ? leftPlayer.y + (leftPlayer.height ? leftPlayer.height / 2 : 0) : 0;
+					trail.y = leftPlayer.y + leftPlayer.height / 2;
 					game.addChildAt(trail, game.getChildIndex(leftPlayer));
 				}
 			};
 			rightPlayer.update = function () {