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

/**** 
* Classes
****/ 
var Block = Container.expand(function (blockType) {
	var self = Container.call(this);
	self.blockType = blockType;
	self.gridX = 0;
	self.gridY = 0;
	var blockGraphics = self.attachAsset(blockType, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Add a subtle border effect
	blockGraphics.alpha = 0.9;
	self.setGridPosition = function (gridX, gridY) {
		self.gridX = gridX;
		self.gridY = gridY;
		self.x = gridX * GRID_SIZE + GRID_SIZE / 2 + GRID_OFFSET_X;
		self.y = gridY * GRID_SIZE + GRID_SIZE / 2 + GRID_OFFSET_Y;
	};
	return self;
});
var BlockSelectionMenu = Container.expand(function () {
	var self = Container.call(this);
	self.isVisible = false;
	// Background
	var bgGraphics = self.attachAsset('menuBg', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.9
	});
	// Title text
	var titleText = new Text2('Select Block Type', {
		size: 32,
		fill: 0xFFFFFF
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 0;
	titleText.y = -200;
	self.addChild(titleText);
	// Close button
	var closeButton = self.attachAsset('closeButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	closeButton.x = 280;
	closeButton.y = -200;
	// Block selection buttons
	self.menuButtons = [];
	var buttonsPerRow = 2;
	var buttonSpacing = 180;
	for (var i = 0; i < blockTypes.length; i++) {
		var button = new Container();
		// Button background
		var buttonBg = button.attachAsset('menuButton', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.8
		});
		// Block preview
		var blockPreview = button.attachAsset(blockTypes[i], {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 0.9,
			scaleY: 0.9
		});
		// Block name text
		var nameText = new Text2(blockTypes[i], {
			size: 20,
			fill: 0xFFFFFF
		});
		nameText.anchor.set(0.5, 0);
		nameText.x = 0;
		nameText.y = 45;
		button.addChild(nameText);
		// Position button
		var col = i % buttonsPerRow;
		var row = Math.floor(i / buttonsPerRow);
		button.x = (col - 0.5) * buttonSpacing;
		button.y = row * buttonSpacing - 50;
		// Store button data
		button.blockType = blockTypes[i];
		button.bgGraphics = buttonBg;
		// Button interaction
		button.down = function (x, y, obj) {
			this.bgGraphics.alpha = 1.0;
			selectedBlockType = this.blockType;
			updateToolbarSelection();
			self.hide();
		};
		button.up = function (x, y, obj) {
			this.bgGraphics.alpha = 0.8;
		};
		self.menuButtons.push(button);
		self.addChild(button);
	}
	// Close button interaction
	closeButton.down = function (x, y, obj) {
		closeButton.alpha = 0.7;
		self.hide();
	};
	closeButton.up = function (x, y, obj) {
		closeButton.alpha = 1.0;
	};
	self.show = function () {
		self.isVisible = true;
		self.alpha = 0;
		self.visible = true;
		tween(self, {
			alpha: 1
		}, {
			duration: 200
		});
	};
	self.hide = function () {
		self.isVisible = false;
		tween(self, {
			alpha: 0
		}, {
			duration: 200,
			onFinish: function onFinish() {
				self.visible = false;
			}
		});
	};
	// Initially hidden
	self.visible = false;
	return self;
});
var Character = Container.expand(function () {
	var self = Container.call(this);
	var characterGraphics = self.attachAsset('character', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.gridX = 0;
	self.gridY = 0;
	self.targetX = 0;
	self.targetY = 0;
	self.isMoving = false;
	self.setGridPosition = function (gridX, gridY) {
		self.gridX = gridX;
		self.gridY = gridY;
		self.targetX = gridX * GRID_SIZE + GRID_SIZE / 2 + GRID_OFFSET_X;
		self.targetY = gridY * GRID_SIZE + GRID_SIZE / 2 + GRID_OFFSET_Y;
		if (!self.isMoving) {
			self.x = self.targetX;
			self.y = self.targetY;
		}
	};
	self.moveToGrid = function (gridX, gridY) {
		if (self.isMoving) return false;
		if (!isValidGridPosition(gridX, gridY)) return false;
		self.isMoving = true;
		self.gridX = gridX;
		self.gridY = gridY;
		self.targetX = gridX * GRID_SIZE + GRID_SIZE / 2 + GRID_OFFSET_X;
		self.targetY = gridY * GRID_SIZE + GRID_SIZE / 2 + GRID_OFFSET_Y;
		tween(self, {
			x: self.targetX,
			y: self.targetY
		}, {
			duration: 200,
			onFinish: function onFinish() {
				self.isMoving = false;
			}
		});
		return true;
	};
	self.update = function () {
		// Character is always on top
		if (self.parent) {
			var parent = self.parent;
			parent.removeChild(self);
			parent.addChild(self);
		}
	};
	return self;
});
var ControlButton = Container.expand(function (direction) {
	var self = Container.call(this);
	self.direction = direction;
	var bgGraphics = self.attachAsset('controlBg', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.7
	});
	var arrowGraphics = self.attachAsset('arrow' + direction.charAt(0).toUpperCase() + direction.slice(1), {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.7,
		scaleY: 0.7
	});
	self.down = function (x, y, obj) {
		bgGraphics.alpha = 1.0;
		var newX = character.gridX;
		var newY = character.gridY;
		if (direction === 'up') newY--;else if (direction === 'down') newY++;else if (direction === 'left') newX--;else if (direction === 'right') newX++;
		character.moveToGrid(newX, newY);
	};
	self.up = function (x, y, obj) {
		bgGraphics.alpha = 0.7;
	};
	return self;
});
var GridCell = Container.expand(function () {
	var self = Container.call(this);
	var cellGraphics = self.attachAsset('gridCell', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.1
	});
	self.gridX = 0;
	self.gridY = 0;
	self.isEmpty = true;
	self.setGridPosition = function (gridX, gridY) {
		self.gridX = gridX;
		self.gridY = gridY;
		self.x = gridX * GRID_SIZE + GRID_SIZE / 2 + GRID_OFFSET_X;
		self.y = gridY * GRID_SIZE + GRID_SIZE / 2 + GRID_OFFSET_Y;
	};
	self.highlight = function () {
		cellGraphics.alpha = 0.3;
	};
	self.unhighlight = function () {
		cellGraphics.alpha = 0.1;
	};
	return self;
});
var ToolbarButton = Container.expand(function (blockType) {
	var self = Container.call(this);
	self.blockType = blockType;
	self.isSelected = false;
	var bgGraphics = self.attachAsset('toolbarBg', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.8
	});
	var blockGraphics = self.attachAsset(blockType, {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.8,
		scaleY: 0.8
	});
	var selectedBorder = self.attachAsset('selectedBorder', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0
	});
	self.setSelected = function (selected) {
		self.isSelected = selected;
		selectedBorder.alpha = selected ? 0.8 : 0;
		bgGraphics.alpha = selected ? 1.0 : 0.8;
	};
	self.down = function (x, y, obj) {
		selectedBlockType = self.blockType;
		updateToolbarSelection();
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
var GRID_SIZE = 80;
var GRID_WIDTH = 20;
var GRID_HEIGHT = 20;
var GRID_OFFSET_X = (2048 - GRID_WIDTH * GRID_SIZE) / 2;
var GRID_OFFSET_Y = 200;
var selectedBlockType = 'dirt';
var blockTypes = ['dirt', 'stone', 'wood', 'grass'];
var inventory = {
	dirt: 50,
	stone: 30,
	wood: 25,
	grass: 20
};
var grid = [];
var placedBlocks = [];
var toolbarButtons = [];
var controlButtons = [];
var pressTimer = null;
var isLongPress = false;
var pressStartTime = 0;
var character = null;
var blockSelectionMenu = null;
var menuButton = null;
// Initialize grid
for (var x = 0; x < GRID_WIDTH; x++) {
	grid[x] = [];
	for (var y = 0; y < GRID_HEIGHT; y++) {
		grid[x][y] = null;
		var gridCell = new GridCell();
		gridCell.setGridPosition(x, y);
		game.addChild(gridCell);
	}
}
// Initialize character at random position
character = new Character();
var randomX = Math.floor(Math.random() * GRID_WIDTH);
var randomY = Math.floor(Math.random() * GRID_HEIGHT);
character.setGridPosition(randomX, randomY);
game.addChild(character);
// Create block selection menu
blockSelectionMenu = new BlockSelectionMenu();
blockSelectionMenu.x = 1024;
blockSelectionMenu.y = 1366;
LK.gui.addChild(blockSelectionMenu);
// Create menu button
menuButton = new Container();
var menuBg = menuButton.attachAsset('toolbarBg', {
	anchorX: 0.5,
	anchorY: 0.5,
	alpha: 0.8
});
var menuText = new Text2('MENU', {
	size: 24,
	fill: 0xFFFFFF
});
menuText.anchor.set(0.5, 0.5);
menuText.x = 0;
menuText.y = 0;
menuButton.addChild(menuText);
menuButton.x = 2048 - 80;
menuButton.y = 150;
menuButton.down = function (x, y, obj) {
	menuBg.alpha = 1.0;
	if (!blockSelectionMenu.isVisible) {
		blockSelectionMenu.show();
	}
};
menuButton.up = function (x, y, obj) {
	menuBg.alpha = 0.8;
};
game.addChild(menuButton);
// Create toolbar
var toolbarY = 2732 - 120;
var toolbarStartX = (2048 - blockTypes.length * 120) / 2;
for (var i = 0; i < blockTypes.length; i++) {
	var button = new ToolbarButton(blockTypes[i]);
	button.x = toolbarStartX + i * 120 + 60;
	button.y = toolbarY;
	toolbarButtons.push(button);
	LK.gui.addChild(button);
}
// Create inventory display
var inventoryTexts = {};
for (var i = 0; i < blockTypes.length; i++) {
	var blockType = blockTypes[i];
	var inventoryText = new Text2(inventory[blockType].toString(), {
		size: 24,
		fill: 0xFFFFFF
	});
	inventoryText.anchor.set(0.5, 0);
	inventoryText.x = toolbarStartX + i * 120 + 60;
	inventoryText.y = toolbarY + 60;
	inventoryTexts[blockType] = inventoryText;
	LK.gui.addChild(inventoryText);
}
// Create control buttons
var controlButtonSize = 100;
var controlPadding = 20;
var controlCenterX = 150;
var controlCenterY = GRID_OFFSET_Y + GRID_HEIGHT * GRID_SIZE + 150;
var directions = [{
	dir: 'up',
	x: 0,
	y: -1
}, {
	dir: 'down',
	x: 0,
	y: 1
}, {
	dir: 'left',
	x: -1,
	y: 0
}, {
	dir: 'right',
	x: 1,
	y: 0
}];
for (var i = 0; i < directions.length; i++) {
	var dirInfo = directions[i];
	var button = new ControlButton(dirInfo.dir);
	button.x = controlCenterX + dirInfo.x * (controlButtonSize + controlPadding);
	button.y = controlCenterY + dirInfo.y * (controlButtonSize + controlPadding);
	controlButtons.push(button);
	game.addChild(button);
}
function updateToolbarSelection() {
	for (var i = 0; i < toolbarButtons.length; i++) {
		toolbarButtons[i].setSelected(toolbarButtons[i].blockType === selectedBlockType);
	}
}
function updateInventoryDisplay() {
	for (var blockType in inventoryTexts) {
		inventoryTexts[blockType].setText(inventory[blockType].toString());
	}
}
function getGridPosition(worldX, worldY) {
	var gridX = Math.floor((worldX - GRID_OFFSET_X) / GRID_SIZE);
	var gridY = Math.floor((worldY - GRID_OFFSET_Y) / GRID_SIZE);
	return {
		x: gridX,
		y: gridY
	};
}
function isValidGridPosition(gridX, gridY) {
	return gridX >= 0 && gridX < GRID_WIDTH && gridY >= 0 && gridY < GRID_HEIGHT;
}
function placeBlock(gridX, gridY) {
	if (!isValidGridPosition(gridX, gridY)) return false;
	if (grid[gridX][gridY] !== null) return false;
	if (inventory[selectedBlockType] <= 0) return false;
	// Don't place block on character position
	if (character && gridX === character.gridX && gridY === character.gridY) return false;
	var block = new Block(selectedBlockType);
	block.setGridPosition(gridX, gridY);
	game.addChild(block);
	grid[gridX][gridY] = block;
	placedBlocks.push(block);
	inventory[selectedBlockType]--;
	updateInventoryDisplay();
	LK.getSound('place').play();
	return true;
}
function removeBlock(gridX, gridY) {
	if (!isValidGridPosition(gridX, gridY)) return false;
	if (grid[gridX][gridY] === null) return false;
	var block = grid[gridX][gridY];
	var blockType = block.blockType;
	// Add breaking animation with flash effect
	LK.effects.flashObject(block, 0xFFFFFF, 200);
	// Remove from placedBlocks array
	for (var i = placedBlocks.length - 1; i >= 0; i--) {
		if (placedBlocks[i] === block) {
			placedBlocks.splice(i, 1);
			break;
		}
	}
	// Animate block destruction with scaling
	tween(block, {
		scaleX: 0,
		scaleY: 0,
		alpha: 0
	}, {
		duration: 150,
		onFinish: function onFinish() {
			block.destroy();
		}
	});
	grid[gridX][gridY] = null;
	inventory[blockType]++;
	updateInventoryDisplay();
	LK.getSound('break').play();
	return true;
}
// Initialize toolbar selection
updateToolbarSelection();
updateInventoryDisplay();
game.down = function (x, y, obj) {
	var gridPos = getGridPosition(x, y);
	// Place block immediately on click
	if (isValidGridPosition(gridPos.x, gridPos.y)) {
		placeBlock(gridPos.x, gridPos.y);
	}
};
// Add some starting blocks to demonstrate the game
LK.setTimeout(function () {
	// Place a few example blocks
	placeBlock(10, 15);
	placeBlock(11, 15);
	placeBlock(12, 15);
	selectedBlockType = 'stone';
	updateToolbarSelection();
	placeBlock(10, 14);
	placeBlock(11, 14);
	placeBlock(12, 14);
	selectedBlockType = 'wood';
	updateToolbarSelection();
	placeBlock(11, 13);
	selectedBlockType = 'dirt';
	updateToolbarSelection();
}, 500);
game.update = function () {
	// Replenish inventory slowly over time
	if (LK.ticks % 600 === 0) {
		// Every 10 seconds
		for (var blockType in inventory) {
			if (inventory[blockType] < 50) {
				inventory[blockType]++;
			}
		}
		updateInventoryDisplay();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -306,11 +306,13 @@
 		gridCell.setGridPosition(x, y);
 		game.addChild(gridCell);
 	}
 }
-// Initialize character
+// Initialize character at random position
 character = new Character();
-character.setGridPosition(10, 10);
+var randomX = Math.floor(Math.random() * GRID_WIDTH);
+var randomY = Math.floor(Math.random() * GRID_HEIGHT);
+character.setGridPosition(randomX, randomY);
 game.addChild(character);
 // Create block selection menu
 blockSelectionMenu = new BlockSelectionMenu();
 blockSelectionMenu.x = 1024;