/**** 
* Classes
****/ 
var Indicator = Container.expand(function () {
	var self = Container.call(this);
	var indicatorGraphics = self.attachAsset('indicator', {
		anchorY: 0.5
	});
	self.alpha = 0;
	self._update_migrated = function (x, y) {
		this.rotation = Math.atan2(y, x);
		this.scale.x = Math.sqrt(x * x + y * y) / 100;
	};
});
var Platform = Container.expand(function () {
	var self = Container.call(this);
	var platformGraphics = self.attachAsset('platform', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.hitTestAsset = self.attachAsset('hitTest', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.hitTestAsset.alpha = 0;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	self.indicator = self.addChild(new Indicator());
	self.playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.gravity = 1;
	self.jumpForce = 20;
	self.velocityX = 0;
	self.velocityY = 0;
	self.setJumpForce = function (x, y) {
		var vectorMagnitude = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
		var maxMagnitude = 1100;
		if (vectorMagnitude > maxMagnitude) {
			x = x / vectorMagnitude * maxMagnitude;
			y = y / vectorMagnitude * maxMagnitude;
		}
		this.jumpForceX = x / 12.5;
		this.jumpForceY = y / 12.5;
	};
	self.jumping = false;
	self.onPlatform = false;
	self._update_migrated = function () {
		this.x += this.velocityX;
		this.y += this.velocityY;
		this.velocityY += this.gravity;
		this.velocityX *= 0.98;
		this.velocityY *= 0.98;
		if (this.y > 2732) {
			LK.showGameOver();
		}
		if (this.x < 0 || this.x > 2048) {
			this.velocityX *= -1;
		}
		if (this.velocityY >= 0) {
			this.jumping = false;
		} else if (this.velocityY < 0) {
			this.jumping = true;
			this.onPlatform = false;
		}
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x385b50
});

/**** 
* Game Code
****/ 
var gameSpeed = 0;
var score = 0;
var background = game.attachAsset('background', {});
background.alpha = 0.5;
game.on('up', function (x, y, obj) {
	if (dragStart && player.onPlatform) {
		var pos = game.toLocal(obj.global);
		player.setJumpForce(dragStart.x - pos.x, dragStart.y - pos.y);
		player.velocityX = player.jumpForceX;
		player.velocityY = player.jumpForceY;
		dragStart = null;
		gameSpeed += 0.5;
		score += 1;
		LK.setScore(score);
		scoreTxt.setText(LK.getScore());
		instructionTxt.destroy();
		player.indicator.alpha = 0;
	}
});
game.on('move', function (x, y, obj) {
	if (dragStart && !player.jumping) {
		var pos = game.toLocal(obj.global);
		player.indicator._update_migrated(dragStart.x - pos.x, dragStart.y - pos.y);
		player.indicator.alpha = 1;
	}
});
var platforms = [];
var platformSpeed = 0;
for (var i = 0; i < 5; i++) {
	var platform = new Platform();
	platform.x = Math.random() * 2048;
	platform.y = i * (2732 / 5);
	platforms.push(platform);
	game.addChild(platform);
}
var scoreTxt = new Text2('0', {
	size: 150,
	fill: '#ffffff',
	font: 'Impact',
	dropShadow: true,
	dropShadowColor: '#000000',
	dropShadowBlur: 4,
	dropShadowAngle: Math.PI / 6,
	dropShadowDistance: 6
});
LK.gui.top.addChild(scoreTxt);
var instructionTxt = new Text2('Drag and release to jump', {
	size: 100,
	fill: '#ffffff',
	font: 'Impact',
	dropShadow: true,
	dropShadowColor: '#000000',
	dropShadowBlur: 4,
	dropShadowAngle: Math.PI / 6,
	dropShadowDistance: 6
});
instructionTxt.anchor.set(.5, .5);
instructionTxt.x = 2048 / 2;
instructionTxt.y = 2732 / 2;
game.addChild(instructionTxt);
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - player.playerGraphics.height;
var firstJump = false;
platforms[0].x = player.x;
platforms[0].y = player.y + player.playerGraphics.height;
LK.on('tick', function () {
	player._update_migrated();
	if (player.y < 2732 / 2) {
		platformSpeed = Math.min(platformSpeed + 0.1, 5);
	} else {
		platformSpeed = Math.max(platformSpeed - 0.1, 0);
	}
	for (var i = 0; i < platforms.length; i++) {
		platforms[i].y += platformSpeed + gameSpeed;
	}
	player.y += platformSpeed + gameSpeed;
	for (var i = 0; i < platforms.length; i++) {
		if (player.intersects(platforms[i].hitTestAsset) && !player.jumping && player.y + player.playerGraphics.height / 2 < platforms[i].y) {
			player.y = platforms[i].y - player.playerGraphics.height / 2 - platforms[i].hitTestAsset.height / 2;
			player.velocityY = 0;
			player.velocityX *= 0.8;
			player.onPlatform = true;
		} else if (platforms[i].y - platforms[i].height > 2732) {
			platforms[i].y = -platforms[i].height;
			platforms[i].x = Math.random() * 2048;
		}
	}
});
var dragStart = null;
game.on('down', function (x, y, obj) {
	dragStart = game.toLocal(obj.global);
});

===================================================================
--- original.js
+++ change.js
@@ -1,18 +1,30 @@
 /**** 
 * Classes
-****/
+****/ 
 var Indicator = Container.expand(function () {
 	var self = Container.call(this);
 	var indicatorGraphics = self.attachAsset('indicator', {
 		anchorY: 0.5
 	});
 	self.alpha = 0;
-	self.update = function (x, y) {
+	self._update_migrated = function (x, y) {
 		this.rotation = Math.atan2(y, x);
 		this.scale.x = Math.sqrt(x * x + y * y) / 100;
 	};
 });
+var Platform = Container.expand(function () {
+	var self = Container.call(this);
+	var platformGraphics = self.attachAsset('platform', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.hitTestAsset = self.attachAsset('hitTest', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.hitTestAsset.alpha = 0;
+});
 var Player = Container.expand(function () {
 	var self = Container.call(this);
 	self.indicator = self.addChild(new Indicator());
 	self.playerGraphics = self.attachAsset('player', {
@@ -34,9 +46,9 @@
 		this.jumpForceY = y / 12.5;
 	};
 	self.jumping = false;
 	self.onPlatform = false;
-	self.update = function () {
+	self._update_migrated = function () {
 		this.x += this.velocityX;
 		this.y += this.velocityY;
 		this.velocityY += this.gravity;
 		this.velocityX *= 0.98;
@@ -54,38 +66,26 @@
 			this.onPlatform = false;
 		}
 	};
 });
-var Platform = Container.expand(function () {
-	var self = Container.call(this);
-	var platformGraphics = self.attachAsset('platform', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
-	self.hitTestAsset = self.attachAsset('hitTest', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
-	self.hitTestAsset.alpha = 0;
-});
 
 /**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
 	backgroundColor: 0x385b50
 });
 
 /**** 
 * Game Code
-****/
+****/ 
 var gameSpeed = 0;
 var score = 0;
 var background = game.attachAsset('background', {});
 background.alpha = 0.5;
-game.on('up', function (obj) {
+game.on('up', function (x, y, obj) {
 	if (dragStart && player.onPlatform) {
-		var pos = obj.event.getLocalPosition(game);
+		var pos = game.toLocal(obj.global);
 		player.setJumpForce(dragStart.x - pos.x, dragStart.y - pos.y);
 		player.velocityX = player.jumpForceX;
 		player.velocityY = player.jumpForceY;
 		dragStart = null;
@@ -96,12 +96,12 @@
 		instructionTxt.destroy();
 		player.indicator.alpha = 0;
 	}
 });
-game.on('move', function (obj) {
+game.on('move', function (x, y, obj) {
 	if (dragStart && !player.jumping) {
-		var pos = obj.event.getLocalPosition(game);
-		player.indicator.update(dragStart.x - pos.x, dragStart.y - pos.y);
+		var pos = game.toLocal(obj.global);
+		player.indicator._update_migrated(dragStart.x - pos.x, dragStart.y - pos.y);
 		player.indicator.alpha = 1;
 	}
 });
 var platforms = [];
@@ -122,9 +122,9 @@
 	dropShadowBlur: 4,
 	dropShadowAngle: Math.PI / 6,
 	dropShadowDistance: 6
 });
-LK.gui.topCenter.addChild(scoreTxt);
+LK.gui.top.addChild(scoreTxt);
 var instructionTxt = new Text2('Drag and release to jump', {
 	size: 100,
 	fill: '#ffffff',
 	font: 'Impact',
@@ -144,9 +144,9 @@
 var firstJump = false;
 platforms[0].x = player.x;
 platforms[0].y = player.y + player.playerGraphics.height;
 LK.on('tick', function () {
-	player.update();
+	player._update_migrated();
 	if (player.y < 2732 / 2) {
 		platformSpeed = Math.min(platformSpeed + 0.1, 5);
 	} else {
 		platformSpeed = Math.max(platformSpeed - 0.1, 0);
@@ -167,7 +167,7 @@
 		}
 	}
 });
 var dragStart = null;
-game.on('down', function (obj) {
-	dragStart = obj.event.getLocalPosition(game);
+game.on('down', function (x, y, obj) {
+	dragStart = game.toLocal(obj.global);
 });
\ No newline at end of file