/**** 
* Classes
****/
var ControlButton = Container.expand(function (assetId, x, y, rotation, controlDirection) {
	var self = Container.call(this);
	self.on('up', function (obj) {
		buttonGraphics.tint = 0xFFFFFF; // Remove tint
	});
	var buttonGraphics = self.attachAsset(assetId, {
		anchorX: 0.5,
		anchorY: 0.5,
		x: x,
		y: y,
		rotation: rotation,
		alpha: 0.5
	});
	self.controlDirection = controlDirection;
	self.on('down', function (obj) {
		buttonGraphics.tint = 0x000000; // Tint button orange
		var zbert = game.grid.children.find(function (child) {
			return child instanceof Zbert;
		});
		if (zbert) {
			zbert.move(self.controlDirection);
		}
	});
});
var BBall = Container.expand(function (gridX, gridY, width, height) {
	var self = Container.call(this);
	self.isBBallJumping = false;
	self.move = function () {
		if (self.isBBallJumping || !self.parent) {
			return;
		}
		self.isBBallJumping = true;
		var tileWidth = 250;
		var tileHeight = 270;
		var arcHeight = 150;
		var direction = Math.random() < 0.5 ? 'downLeft' : 'downRight';
		var targetX = self.x + (direction === 'downLeft' ? -tileWidth / 2 : tileWidth / 2);
		var targetY = self.y + tileHeight - 90;
		var startX = self.x;
		var startY = self.y;
		var distanceX = targetX - startX;
		var distanceY = targetY - startY;
		var startTime = Date.now();
		var travelTime = 400;
		var bballTickHandler = function bballTickHandler() {
			var currentTime = Date.now();
			var timeElapsed = currentTime - startTime;
			if (timeElapsed < travelTime) {
				var progress = timeElapsed / travelTime;
				var arcProgress = Math.sin(progress * Math.PI);
				self.x = startX + distanceX * progress;
				self.y = startY + distanceY * progress - arcHeight * arcProgress;
			} else {
				self.x = targetX;
				self.y = targetY;
				LK.off('tick', bballTickHandler);
				self.isBBallJumping = false;
				var tileBelow = game.grid.getTileAt(self.x, self.y + tileHeight / 2);
				if (!tileBelow) {
					self.parent.removeChild(self);
					// Spawn a new BBall at the top
					var newBBall = new BBall(game.grid.tileArray[0][0].x, game.grid.tileArray[0][0].y - 150, 180, 180);
					game.grid.addChild(newBBall);
					// Trigger the move of the new BBall
					newBBall.move();
				}
			}
		};
		LK.on('tick', bballTickHandler);
		LK.setTimeout(self.move, travelTime + 50);
	};
	var BBallGraphics = self.attachAsset('bouncingBall', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	BBallGraphics.width = width;
	BBallGraphics.height = height;
	self.x = gridX;
	self.y = gridY;
});
var Zbert = Container.expand(function (gridX, gridY, width, height) {
	var self = Container.call(this);
	self.isZbertJumping = false;
	self.move = function (direction) {
		if (self.isZbertJumping) {
			return;
		}
		self.isZbertJumping = true;
		var moveX = 0;
		var moveY = 0;
		var tileWidth = 250;
		var tileHeight = 270;
		var arcHeight = 130;
		var targetX = self.x;
		var targetY = self.y;
		switch (direction) {
			case 'upLeft':
				targetX -= tileWidth / 2 + 2;
				targetY -= tileHeight - 90;
				self.zbertGraphics.setTexture(LK.getAsset(zbertTextures.up, {}));
				break;
			case 'upRight':
				targetX += tileWidth / 2;
				targetY -= tileHeight - 90;
				self.zbertGraphics.texture = zbertTextures.up;
				break;
			case 'downLeft':
				targetX -= tileWidth / 2;
				targetY += tileHeight - 90;
				self.zbertGraphics.setTexture(LK.getAsset(zbertTextures.down, {}));
				break;
			case 'downRight':
				targetX += tileWidth / 2;
				targetY += tileHeight - 90;
				self.zbertGraphics.texture = zbertTextures.down;
				break;
		}
		var startX = self.x;
		var startY = self.y;
		var distanceX = targetX - startX;
		var distanceY = targetY - startY;
		var startTime = Date.now();
		var travelTime = 300;
		var zbertTickHandler = function zbertTickHandler() {
			var currentTime = Date.now();
			var timeElapsed = currentTime - startTime;
			if (timeElapsed < travelTime) {
				var progress = timeElapsed / travelTime;
				var arcProgress = Math.sin(progress * Math.PI);
				self.x = startX + distanceX * progress;
				self.y = startY + distanceY * progress - arcHeight * arcProgress;
			} else {
				self.x = targetX;
				self.y = targetY;
				LK.off('tick', zbertTickHandler);
				self.isZbertJumping = false;
				var tileBelow = game.grid.getTileAt(self.x, self.y + tileHeight);
				if (tileBelow) {
					tileBelow.flipColor();
					if (game.grid.checkWinCondition()) {
						game.showWin();
					}
				} else {
					self.x = game.grid.x - self.width;
					self.y = 0;
					var fallToY = game.height - self.height / 2;
					var fallDuration = 4000;
					var fallStartTime = Date.now();
					var zbertFallTickHandler = function zbertFallTickHandler() {
						var currentTime = Date.now();
						var timeElapsed = currentTime - fallStartTime;
						if (timeElapsed < fallDuration) {
							var fallProgress = timeElapsed / fallDuration;
							self.y = fallProgress * fallToY;
						} else {
							self.y = fallToY;
							LK.off('tick', zbertFallTickHandler);
							self.isZbertJumping = false;
						}
					};
					LK.on('tick', zbertFallTickHandler);
				}
			}
		};
		LK.on('tick', zbertTickHandler);
	};
	self.zbertGraphics = self.attachAsset('Zbert1', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.zbertGraphics.width = width;
	self.zbertGraphics.height = height;
	self.x = gridX;
	self.y = gridY;
});
// Grid class to manage the puzzle grid
var Grid = Container.expand(function () {
	var self = Container.call(this);
	// Method to get the tile at a specific x and y position
	self.getTileAt = function (x, y) {
		for (var i = 0; i < this.tileArray.length; i++) {
			for (var j = 0; j < this.tileArray[i].length; j++) {
				var tile = this.tileArray[i][j];
				if (x >= tile.x - tile.width / 2 && x <= tile.x + tile.width / 2 && y >= tile.y - tile.height / 2 && y <= tile.y + tile.height / 2) {
					return tile;
				}
			}
		}
		return null;
	};
	this.gridSize = 13; // Gridsize control - 13 gives 7 wide middle
	this.tileArray = []; // Array to hold the tiles
	var tileColorCounter = {
		whiteCount: 0,
		greenCount: 0
	}; // Object to keep track of tile colors
	// Initialize the grid with tiles
	self.initGrid = function () {
		var tileWidth = 250;
		var tileHeight = 270;
		for (var i = 0; i < this.gridSize; i++) {
			this.tileArray[i] = []; // Initialize the row in tileArray
			var numTilesInRow = i < 7 ? i + 1 : this.gridSize - i;
			var rowOffset = (this.gridSize - numTilesInRow) * (tileWidth / 2);
			for (var j = 0; j < numTilesInRow; j++) {
				var tile = new Tile(i, j, tileWidth, tileHeight, this.gridSize);
				tile.x = rowOffset + j * tileWidth;
				tile.y = i * (tileHeight - 90);
				this.tileArray[i][j] = tile;
				self.addChild(tile);
				if (i === this.gridSize - 1 && j === numTilesInRow - 1) {
					// Add Zbert after all tiles have been added
					var zbert = self.children.find(function (child) {
						return child instanceof Zbert;
					});
					if (!zbert) {
						zbert = new Zbert(tile.x, tile.y - 150, 180, 180);
					} else {
						zbert.x = tile.x;
						zbert.y = tile.y - 150;
						zbert.isZbertJumping = false; // Ensure Zbert can move immediately
					}
					self.addChild(zbert);
					// Spawn a gem on random tiles except the bottom row
					var spawnGem = function spawnGem() {
						var randomRow = Math.floor(Math.random() * (self.gridSize - 2));
						var randomCol = Math.floor(Math.random() * self.tileArray[randomRow].length);
						var randomTile = self.tileArray[randomRow][randomCol];
						var gem = new Gem(randomTile.x, randomTile.y - 90, 150, 150);
						self.addChild(gem);
						// Set a timer to destroy the gem after 15 seconds
						LK.setTimeout(function () {
							if (gem.parent) {
								gem.destroy();
							}
						}, 15000);
					};
					// Spawn gems at random intervals
					var spawnInterval = Math.random() * (30000 - 15000) + 15000; // Random time between 15 to 30 seconds
					LK.setInterval(spawnGem, spawnInterval);
				}
			}
		}
	};
	// Check if all tiles are the same color
	self.checkWinCondition = function () {
		var firstColor = this.tileArray[0][0].color;
		for (var i = 0; i < this.gridSize; i++) {
			for (var j = 0; j < this.tileArray[i].length; j++) {
				if (this.tileArray[i][j].color !== targetColours[targetColourIndex]) {
					return false;
				}
			}
		}
		return true;
	};
});
var Tile = Container.expand(function (gridX, gridY, width, height, gridSize) {
	var self = Container.call(this);
	self.gridSize = gridSize;
	self.color = gridX === self.gridSize - 1 && gridY === 0 ? targetColours[targetColourIndex] : 0xFFFFFF; // Set all cells to white apart from the cell Zbert is on in the bottom left corner, set this cell to green
	var tileGraphics = self.attachAsset('tile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	tileGraphics.width = width;
	tileGraphics.height = height;
	tileGraphics.tint = self.color;
	// Function to highlight the tile
	self.highlight = function (color) {
		tileGraphics.tint = color;
		LK.setTimeout(function () {
			tileGraphics.tint = self.color;
		}, 500); // Reset tint after 500ms
	};
	// Function to flip the color of the tile
	self.flipColor = function () {
		self.color = targetColours[targetColourIndex];
		tileGraphics.tint = self.color;
		LK.setScore(LK.getScore() + 25);
		scoreDisplay.updateScore(LK.getScore());
	};
});
var LevelManager = Container.expand(function () {
	var self = Container.call(this);
	self.showWin = function () {
		LK.effects.flashScreen(0xFF0000, 1000); // Flash the screen green for 1 second
		setBackgroundByNumber(Math.floor(Math.random() * 6) + 1);
		if (game.grid.checkWinCondition()) {
			// Move to the next target colour
			if (++targetColourIndex >= targetColours.length) {
				targetColourIndex = 0;
			}
			// Reset the grid for a new level with the next target colour
			setBackgroundByNumber(Math.floor(Math.random() * 6) + 1);
			game.grid.initGrid();
			game.grid.x = (2048 - tileWidth * game.grid.gridSize) / 2 + tileWidth / 2;
			game.grid.y = (2732 - tileHeight * game.grid.gridSize) / 2 + tileHeight / 2 + 600;
		}
	};
});
var Gem = Container.expand(function (gridX, gridY, width, height) {
	var self = Container.call(this);
	var gemGraphics = self.attachAsset('gem', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	gemGraphics.width = width;
	gemGraphics.height = height;
	self.x = gridX;
	self.y = gridY;
	// Function to collect the gem
	self.collect = function () {
		// Increase score by 100 when Zbert collects a gem
		LK.setScore(LK.getScore() + 100);
		self.destroy();
	};
});
var ScoreText = Container.expand(function () {
	var self = Container.call(this);
	var scoreTxt = new Text2('0', {
		size: 100,
		weight: 800,
		fill: "#ffffff"
	});
	scoreTxt.anchor.set(0.5, 0);
	self.addChild(scoreTxt);
	self.updateScore = function (newScore) {
		scoreTxt.setText(newScore.toString());
	};
});

/**** 
* Initialize Game
****/
// Instantiate LevelManager and replace the old showWin function
var game = new LK.Game({
	backgroundColor: 0x000000 // Init game with black background
});

/**** 
* Game Code
****/
// Preload Zbert textures
var zbertTextures = {
	up: 'Zbert1',
	down: 'Zbert2'
};
var scoreDisplay = new ScoreText();
LK.gui.top.addChild(scoreDisplay);
// Grid class to manage the puzzle grid
// Function to select and set background by variable number
function controlBBallMovement(direction) {
	var bball = game.grid.children.find(function (child) {
		return child instanceof BBall;
	});
	if (bball) {
		bball.move(direction);
	}
}
var tileArray = [];
var targetColours = [0x00FF00, 0x0000FF, 0xFFFF00, 0xFF00FF, 0x00FFFF, 0x800000, 0x808000, 0x008000, 0x800080, 0x008080, 0x000080];
var targetColourIndex = 0;
var setBackgroundByNumber = function setBackgroundByNumber() {
	var backgroundNumber = Math.floor(Math.random() * 6) + 1;
	// Remove the current background if it exists
	if (game.background) {
		game.removeChild(game.background);
	}
	// Create a new background asset based on the provided number
	game.background = game.createAsset('backgroundImage' + backgroundNumber, {});
	game.background.width = 3000;
	game.background.height = 3000;
	game.background.x = 2048 / 2 - game.background.width / 2;
	game.background.y = 2732 / 2 - game.background.height / 2;
	// Add the new background to the game
	game.addChildAt(game.background, 0);
};
// Set an initial background
setBackgroundByNumber(2);
// Add image to top right corner of screen
var topRightImage = game.addChild(new Container());
topRightImage.x = 2048 - 200 - LK.getAsset('imageId', {}).width;
topRightImage.y = 300;
var topRightImageGraphics = topRightImage.attachAsset('imageId', {
	anchorX: 0.5,
	anchorY: 0.5
});
topRightImageGraphics.tint = targetColours[targetColourIndex];
// Add Corner asset to the screen
var CCupL = game.addChild(new ControlButton('CCupL', -125, 2478, -45, 'upLeft'));
var CCupR = game.addChild(new ControlButton('CCupR', 2170, 2507, 45, 'upRight'));
var CCdownL = game.addChild(new ControlButton('CCdownR', 340, 2769, -45, 'downRight'));
var CCdownR = game.addChild(new ControlButton('CCdownL', 1690, 2805, 45, 'downLeft'));
// Add the grid to the game
game.grid = game.addChild(new Grid());
game.grid.initGrid();
var tileWidth = 250;
var tileHeight = 270;
game.grid.x = (2048 - tileWidth * game.grid.gridSize) / 2 + tileWidth / 2;
game.grid.y = (2732 - tileHeight * game.grid.gridSize) / 2 + tileHeight / 2 + 600;
// Instantiate LevelManager and replace the old showWin function
var levelManager = new LevelManager();
game.showWin = levelManager.showWin;
// Method to spawn new BBalls at random intervals between 4 to 10 seconds
function spawnBBall() {
	var spawnInterval = Math.random() * (10000 - 4000) + 4000; // Random time between 4 to 10 seconds
	LK.setTimeout(function () {
		// Only spawn a new BBall if there are less than 3 BBalls on screen
		var bballCount = game.grid.children.reduce(function (count, child) {
			return count + (child instanceof BBall ? 1 : 0);
		}, 0);
		if (bballCount < 3) {
			//limit number of balls to 3 at any one time
			var bball = new BBall(game.grid.tileArray[0][0].x, game.grid.tileArray[0][0].y - 150, 180, 180);
			game.grid.addChild(bball);
			bball.move();
		}
		spawnBBall(); // Recursively call to continue spawning
	}, spawnInterval);
}
// Start spawning BBalls
spawnBBall();
LK.on('tick', function () {
	var zbert = game.grid.children.find(function (child) {
		return child instanceof Zbert;
	});
	var bball = game.grid.children.find(function (child) {
		return child instanceof BBall;
	});
	var gem = game.grid.children.find(function (child) {
		return child instanceof Gem;
	});
	if (zbert && bball && zbert.intersects(bball)) {
		LK.effects.flashScreen(0x000000, 1000);
		LK.showGameOver();
	}
	if (zbert && gem && zbert.intersects(gem)) {
		gem.collect();
	}
	// Rest of the tick code...
});

===================================================================
--- original.js
+++ change.js
@@ -99,9 +99,9 @@
 		switch (direction) {
 			case 'upLeft':
 				targetX -= tileWidth / 2 + 2;
 				targetY -= tileHeight - 90;
-				self.zbertGraphics.texture = zbertTextures.up;
+				self.zbertGraphics.setTexture(LK.getAsset(zbertTextures.up, {}));
 				break;
 			case 'upRight':
 				targetX += tileWidth / 2;
 				targetY -= tileHeight - 90;
@@ -109,9 +109,9 @@
 				break;
 			case 'downLeft':
 				targetX -= tileWidth / 2;
 				targetY += tileHeight - 90;
-				self.zbertGraphics.texture = zbertTextures.down;
+				self.zbertGraphics.setTexture(LK.getAsset(zbertTextures.down, {}));
 				break;
 			case 'downRight':
 				targetX += tileWidth / 2;
 				targetY += tileHeight - 90;
@@ -345,10 +345,10 @@
 * Game Code
 ****/
 // Preload Zbert textures
 var zbertTextures = {
-	up: LK.getAsset('Zbert1', {}),
-	down: LK.getAsset('Zbert2', {})
+	up: 'Zbert1',
+	down: 'Zbert2'
 };
 var scoreDisplay = new ScoreText();
 LK.gui.top.addChild(scoreDisplay);
 // Grid class to manage the puzzle grid