===================================================================
--- original.js
+++ change.js
@@ -1,7 +1,7 @@
 /**** 
 * Classes
-****/
+****/ 
 var Dot = Container.expand(function () {
 	var self = Container.call(this);
 	var dotGraphics = self.attachAsset('dot', {
 		anchorX: 0.5,
@@ -27,9 +27,9 @@
 	});
 	self.length = 1;
 	self.direction = 'right';
 	self.body = [];
-	self.move = function () {
+	self._move_migrated = function () {
 		var gridSize = 100;
 		var oldHeadPosition = {
 			x: snakeGraphics.x,
 			y: snakeGraphics.y
@@ -100,16 +100,16 @@
 });
 
 /**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
 	backgroundColor: 0x000000
 });
 
 /**** 
 * Game Code
-****/
+****/ 
 var gridSize = 100;
 var marginX = 2048 % gridSize / 2;
 var marginY = 2732 % gridSize / 2;
 var background = game.attachAsset('background', {});
@@ -136,9 +136,9 @@
 var moveFrequency = 8;
 LK.on('tick', function () {
 	tickCounter++;
 	if (tickCounter % moveFrequency == 0) {
-		snake.move();
+		snake._move_migrated();
 		snake.checkCollision();
 	}
 	if (isGameOver) {
 		LK.showGameOver();
@@ -162,16 +162,16 @@
 		}
 	}
 });
 var startSwipePos = null;
-game.on('down', function (obj) {
-	startSwipePos = obj.event.getLocalPosition(game);
+game.on('down', function (x, y, obj) {
+	startSwipePos = game.toLocal(obj.global);
 });
-game.on('up', function (obj) {
+game.on('up', function (x, y, obj) {
 	if (!startSwipePos) {
 		return;
 	}
-	var endSwipePos = obj.event.getLocalPosition(game);
+	var endSwipePos = game.toLocal(obj.global);
 	var dx = endSwipePos.x - startSwipePos.x;
 	var dy = endSwipePos.y - startSwipePos.y;
 	if (Math.abs(dx) > Math.abs(dy)) {
 		if (snake.direction !== 'up' && snake.direction !== 'down') {