===================================================================
--- original.js
+++ change.js
@@ -27,9 +27,9 @@
 		} else if (bird.intersects(rightWall)) {
 			bird.xSpeed = -30; // Add negative x speed when bird jumps from the right wall
 		}
 	};
-	self.update = function () {
+	self._update_migrated = function () {
 		if (game.isMouseDown) {
 			self.ySpeed += self.gravity / 3;
 		} else {
 			self.ySpeed += self.gravity;
@@ -53,9 +53,9 @@
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.speed = 5;
-	self.move = function (speed) {
+	self._move_migrated = function (speed) {
 		self.y += speed;
 	};
 });
 var Shadow = Container.expand(function () {
@@ -101,9 +101,9 @@
 game.obstacleSpeedIncrease = 0.005;
 game.simulatedY = 0;
 game.checkObstacleCollision = function (obstacles) {
 	for (var i = 0; i < obstacles.length; i++) {
-		obstacles[i].move();
+		obstacles[i]._move_migrated();
 		var dist = Math.sqrt(Math.pow(bird.x - obstacles[i].x, 2) + Math.pow(bird.y - obstacles[i].y, 2));
 		if (dist < 280) {
 			LK.setScore(game.score);
 			LK.showGameOver();
@@ -156,21 +156,21 @@
 bird.y = 1366;
 game.isMouseDown = false;
 game.isUpEventTriggered = true;
 game.isUpEventTriggered = true;
-game.on('down', function (obj) {
+game.on('down', function (x, y, obj) {
 	if (game.isUpEventTriggered) {
 		bird.flap();
 		game.isMouseDown = true;
 		game.isUpEventTriggered = false;
 	}
 });
-game.on('up', function (obj) {
+game.on('up', function (x, y, obj) {
 	game.isMouseDown = false;
 	game.isUpEventTriggered = true;
 });
 LK.on('tick', function () {
-	bird.update();
+	bird._update_migrated();
 	// Update the shadow particles
 	var shadowCount = 0;
 	for (var i = game.children.length - 1; i >= 0; i--) {
 		if (game.children[i] instanceof Shadow) {
@@ -216,16 +216,16 @@
 		bird.xSpeed = 0;
 		bird.isInAir = 0;
 	}
 	for (var i = leftObstacles.length - 1; i >= 0; i--) {
-		leftObstacles[i].move(game.obstacleSpeed);
+		leftObstacles[i]._move_migrated(game.obstacleSpeed);
 		if (leftObstacles[i].y > 3232) {
 			leftObstacles[i].destroy();
 			leftObstacles.splice(i, 1);
 		}
 	}
 	for (var i = rightObstacles.length - 1; i >= 0; i--) {
-		rightObstacles[i].move(game.obstacleSpeed);
+		rightObstacles[i]._move_migrated(game.obstacleSpeed);
 		if (rightObstacles[i].y > 3232) {
 			rightObstacles[i].destroy();
 			rightObstacles.splice(i, 1);
 		}