/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
var GridCell = Container.expand(function () {
	var self = Container.call(this);
	var border = self.attachAsset('grid_border', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var background = self.attachAsset('grid_cell', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.blockType = null;
	self.blockGraphics = null;
	self.placeBlock = function (blockType) {
		if (self.blockGraphics) {
			self.removeChild(self.blockGraphics);
		}
		if (blockType && blockType !== 'empty') {
			self.blockGraphics = self.attachAsset(blockType + '_block', {
				anchorX: 0.5,
				anchorY: 0.5
			});
			self.blockType = blockType;
			LK.setScore(LK.getScore() + 1);
			scoreTxt.setText(LK.getScore());
		} else {
			self.blockGraphics = null;
			self.blockType = null;
		}
	};
	self.removeBlock = function () {
		if (self.blockGraphics) {
			self.removeChild(self.blockGraphics);
			self.blockGraphics = null;
			self.blockType = null;
		}
	};
	self.down = function (x, y, obj) {
		if (selectedBlockType === 'empty') {
			self.removeBlock();
		} else if (self.blockType === null) {
			self.placeBlock(selectedBlockType);
		} else {
			self.removeBlock();
		}
	};
	return self;
});
var ToolbarButton = Container.expand(function (blockType) {
	var self = Container.call(this);
	self.blockType = blockType;
	var background = self.attachAsset('toolbar_button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.selectedBorder = self.attachAsset('toolbar_selected', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.selectedBorder.visible = false;
	if (blockType !== 'empty') {
		var blockPreview = self.attachAsset(blockType + '_block', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 0.8,
			scaleY: 0.8
		});
	}
	self.setSelected = function (selected) {
		self.selectedBorder.visible = selected;
	};
	self.down = function (x, y, obj) {
		selectedBlockType = self.blockType;
		updateToolbarSelection();
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x34495e
});

/**** 
* Game Code
****/ 
// Game constants
var GRID_SIZE = 20;
var CELL_SIZE = 120;
var GRID_START_X = 200;
var GRID_START_Y = 200;
// Game variables
var selectedBlockType = 'stone';
var gridCells = [];
var toolbarButtons = [];
var blockTypes = ['stone', 'wood', 'metal', 'glass', 'grass', 'water', 'brick', 'sand', 'ice', 'lava', 'empty'];
// Create title text
var titleTxt = new Text2('Builder!', {
	size: 80,
	fill: 0xFFFFFF
});
titleTxt.anchor.set(0.5, 0);
titleTxt.x = 0;
titleTxt.y = 50;
LK.gui.top.addChild(titleTxt);
// Create score display
var scoreTxt = new Text2('0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
scoreTxt.y = 150;
LK.gui.top.addChild(scoreTxt);
scoreTxt.setText(LK.getScore());
// Create toolbar background
var toolbarBg = game.addChild(LK.getAsset('toolbar_bg', {
	x: 1024,
	y: 2632,
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 26,
	scaleY: 2
}));
// Create toolbar buttons
function createToolbar() {
	for (var i = 0; i < blockTypes.length; i++) {
		var button = new ToolbarButton(blockTypes[i]);
		button.x = 400 + i * 150;
		button.y = 2632;
		toolbarButtons.push(button);
		game.addChild(button);
	}
	updateToolbarSelection();
}
function updateToolbarSelection() {
	for (var i = 0; i < toolbarButtons.length; i++) {
		toolbarButtons[i].setSelected(toolbarButtons[i].blockType === selectedBlockType);
	}
}
// Create grid
function createGrid() {
	for (var row = 0; row < GRID_SIZE; row++) {
		gridCells[row] = [];
		for (var col = 0; col < GRID_SIZE; col++) {
			var cell = new GridCell();
			cell.x = GRID_START_X + col * CELL_SIZE;
			cell.y = GRID_START_Y + row * CELL_SIZE;
			gridCells[row][col] = cell;
			game.addChild(cell);
		}
	}
}
// Initialize game elements
createToolbar();
createGrid();
// Game update loop
game.update = function () {
	// No continuous updates needed for this game
};

===================================================================
--- original.js
+++ change.js
@@ -102,14 +102,24 @@
 var selectedBlockType = 'stone';
 var gridCells = [];
 var toolbarButtons = [];
 var blockTypes = ['stone', 'wood', 'metal', 'glass', 'grass', 'water', 'brick', 'sand', 'ice', 'lava', 'empty'];
+// Create title text
+var titleTxt = new Text2('Builder!', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+titleTxt.anchor.set(0.5, 0);
+titleTxt.x = 0;
+titleTxt.y = 50;
+LK.gui.top.addChild(titleTxt);
 // Create score display
 var scoreTxt = new Text2('0', {
 	size: 60,
 	fill: 0xFFFFFF
 });
 scoreTxt.anchor.set(0.5, 0);
+scoreTxt.y = 150;
 LK.gui.top.addChild(scoreTxt);
 scoreTxt.setText(LK.getScore());
 // Create toolbar background
 var toolbarBg = game.addChild(LK.getAsset('toolbar_bg', {