/**** 
* Classes
****/ 
// Background class
var Background = Container.expand(function () {
	var self = Container.call(this);
	var backgroundGraphics = self.attachAsset('background', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set background speed
	self.speed = -2;
	// This is automatically called every game tick, if the background is attached!
	self.update = function () {
		// Move the background downwards
		self.y += self.speed;
		// Reset the position of the background when it reaches the end
		if (self.y <= -2732) {
			self.y = 2732;
		}
	};
});
// Diver class
var Diver = Container.expand(function () {
	var self = Container.call(this);
	var diverGraphics = self.attachAsset('diver', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Add a sideways movement to the diver
	self.movement = 0;
	self.direction = 1;
	self.update = function () {
		self.movement += self.direction * 0.03;
		if (self.movement > 0.5 || self.movement < -0.5) {
			self.direction *= -1;
		}
		self.x += self.movement;
	};
	// Add flippers to the diver
	var leftFlipper = self.addChild(new Flipper());
	leftFlipper.x = -50;
	leftFlipper.depth = -1;
	var rightFlipper = self.addChild(new Flipper());
	rightFlipper.x = 50;
	rightFlipper.depth = -1;
});
// Flipper class
var Flipper = Container.expand(function () {
	var self = Container.call(this);
	var flipperGraphics = self.attachAsset('flippers', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	// Set flipper movement
	self.movement = 0;
	self.direction = 1;
	// This is automatically called every game tick, if the flipper is attached!
	self.update = function () {
		// Move the flipper subtly to simulate flipping
		self.movement += self.direction * 0.03;
		if (self.movement > 0.5 || self.movement < -0.5) {
			self.direction *= -1;
		}
		self.rotation = self.movement;
	};
});
// Obstacle1 class
var Obstacle1 = Container.expand(function () {
	var self = Container.call(this);
	var obstacle1Graphics = self.attachAsset('obstacle1', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set obstacle1 speed
	self.speed = -5;
	// This is automatically called every game tick, if the obstacle1 is attached!
	self.update = function () {
		// Check if the obstacle is colliding with the shield
		if (self.intersects(shield)) {
			// Push the obstacle to the right if the shield is on its left
			if (self.x < shield.x) {
				self.x -= 2.5;
				if (self.intersects(shield)) {
					self.x -= 2.5;
				}
			} else if (self.x > shield.x) {
				self.x += 2.5;
				if (self.intersects(shield)) {
					self.x += 2.5;
				}
			}
		}
		// Check for collision with diver
		if (self.intersects(diver)) {
			// Flash screen red for 1 second (1000ms) to show game over
			LK.effects.flashScreen(0xff0000, 1000);
			// Show game over. The game will be automatically paused while game over is showing.
			LK.showGameOver();
		}
		// Continue moving upwards
		self.y += self.speed;
		self.rotation += 0.01; // Add small rotation to the obstacle
		if (self.y < 0) {
			self.y = 2732;
		}
		// Check if the obstacle is colliding with another obstacle
		for (var i = 0; i < obstacles.length; i++) {
			var otherObstacle = obstacles[i];
			if (self !== otherObstacle && self.intersects(otherObstacle)) {
				// Push the obstacle to the right if the other obstacle is on its left
				if (self.x < otherObstacle.x) {
					self.x -= 2.5;
					if (self.intersects(otherObstacle)) {
						self.x -= 2.5;
					}
				} else if (self.x > otherObstacle.x) {
					self.x += 2.5;
					if (self.intersects(otherObstacle)) {
						self.x += 2.5;
					}
				}
			}
		}
	};
});
// Shield class
var Shield = Container.expand(function () {
	var self = Container.call(this);
	var shieldGraphics = self.attachAsset('shield', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.down = function (x, y, obj) {
		dragNode = self;
	};
});

/**** 
* Initialize Game
****/ 
// Create a diver instance
//<Assets used in the game will automatically appear here>
var game = new LK.Game({
	backgroundColor: 0xADD8E6 //Init game with light blue background
});

/**** 
* Game Code
****/ 
// Create a shield instance
var shield = game.addChild(new Shield());
// Position the shield at the center of the screen
shield.x = 2048 / 2;
shield.y = 2732 / 2;
// Create a diver instance
var dragNode = null;
var diver = new Diver();
diver.depth = 2;
// Position the diver at the top center of the screen, 200 pixels down from the top
diver.x = 2048 / 2;
diver.y = 500;
// Position the flippers relative to the diver
diver.children[0].y = diver.height / 2 - 20; // Left flipper
diver.children[0].y = diver.children[0].y; // Right flipper
// Set diver to a higher depth than flippers
diver.depth = 2;
// Create an obstacle1 instance
game.move = function (x, y, obj) {
	if (dragNode) {
		dragNode.x = x;
		dragNode.y = y;
	}
};
var obstacles = [];
var obstacle1 = new Obstacle1();
var background1 = game.addChild(new Background());
background1.x = 2048 / 2;
background1.y = 2732 / 2;
var background2 = game.addChild(new Background());
background2.x = 2048 / 2;
background2.y = 2732 / 2 + 2732;
game.addChild(diver);
game.setChildIndex(diver, game.children.length - 1);
game.addChild(obstacle1);
// Position the obstacle1 at the bottom center of the screen
obstacle1.x = 2048 / 2 - 100;
obstacle1.y = 2732;
obstacles.push(obstacle1);
var obstacle2 = game.addChild(new Obstacle1());
// Position the obstacle2 next to obstacle1
obstacle2.x = 2048 / 2 + 100;
obstacle2.y = 2732;
obstacles.push(obstacle2);
;
game.up = function (x, y, obj) {
	dragNode = null;
};

===================================================================
--- original.js
+++ change.js
@@ -1,7 +1,26 @@
 /**** 
 * Classes
 ****/ 
+// Background class
+var Background = Container.expand(function () {
+	var self = Container.call(this);
+	var backgroundGraphics = self.attachAsset('background', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Set background speed
+	self.speed = -2;
+	// This is automatically called every game tick, if the background is attached!
+	self.update = function () {
+		// Move the background downwards
+		self.y += self.speed;
+		// Reset the position of the background when it reaches the end
+		if (self.y <= -2732) {
+			self.y = 2732;
+		}
+	};
+});
 // Diver class
 var Diver = Container.expand(function () {
 	var self = Container.call(this);
 	var diverGraphics = self.attachAsset('diver', {
@@ -54,22 +73,24 @@
 		anchorY: 0.5
 	});
 	// Set obstacle1 speed
 	self.speed = -5;
-	self.speedX = 0;
 	// This is automatically called every game tick, if the obstacle1 is attached!
 	self.update = function () {
 		// Check if the obstacle is colliding with the shield
 		if (self.intersects(shield)) {
 			// Push the obstacle to the right if the shield is on its left
 			if (self.x < shield.x) {
 				self.x -= 2.5;
-				self.speedX = -2.5;
+				if (self.intersects(shield)) {
+					self.x -= 2.5;
+				}
 			} else if (self.x > shield.x) {
 				self.x += 2.5;
-				self.speedX = 2.5;
+				if (self.intersects(shield)) {
+					self.x += 2.5;
+				}
 			}
-			self.x += self.speedX;
 		}
 		// Check for collision with diver
 		if (self.intersects(diver)) {
 			// Flash screen red for 1 second (1000ms) to show game over
@@ -89,14 +110,17 @@
 			if (self !== otherObstacle && self.intersects(otherObstacle)) {
 				// Push the obstacle to the right if the other obstacle is on its left
 				if (self.x < otherObstacle.x) {
 					self.x -= 2.5;
-					self.speedX = -2.5;
+					if (self.intersects(otherObstacle)) {
+						self.x -= 2.5;
+					}
 				} else if (self.x > otherObstacle.x) {
 					self.x += 2.5;
-					self.speedX = 2.5;
+					if (self.intersects(otherObstacle)) {
+						self.x += 2.5;
+					}
 				}
-				self.x += self.speedX;
 			}
 		}
 	};
 });
@@ -149,8 +173,14 @@
 	}
 };
 var obstacles = [];
 var obstacle1 = new Obstacle1();
+var background1 = game.addChild(new Background());
+background1.x = 2048 / 2;
+background1.y = 2732 / 2;
+var background2 = game.addChild(new Background());
+background2.x = 2048 / 2;
+background2.y = 2732 / 2 + 2732;
 game.addChild(diver);
 game.setChildIndex(diver, game.children.length - 1);
 game.addChild(obstacle1);
 // Position the obstacle1 at the bottom center of the screen