/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Define patrol points for character movement
var patrolPoints = [];
// Create a 2D array to represent the grid
var gridSize = 20;
var character;
var wallTiles = [];
var floorTiles = [];
var selectedTile;
var tileOriginalColor;
var isGameStarted = false;
var grid = new Array(gridSize * gridSize);
for (var i = 0; i < gridSize * gridSize; i++) {
	var x = i % gridSize;
	var y = Math.floor(i / gridSize);
	var tile;
	if (x === 0 || y === 0 || x === gridSize - 1 || y === gridSize - 1) {
		tile = LK.getAsset('wallTile', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: x * 100 + (2048 - gridSize * 100) / 2,
			y: y * 100 + (2732 - gridSize * 100) / 2
		});
		wallTiles.push(tile);
	} else {
		tile = LK.getAsset('floorTile', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: x * 100 + (2048 - gridSize * 100) / 2,
			y: y * 100 + (2732 - gridSize * 100) / 2
		});
		floorTiles.push(tile);
	}
	game.addChild(tile);
	grid[i] = tile;
}
// Select a random wall tile and replace it with a hole tile
var randomWallTileIndex = Math.floor(Math.random() * wallTiles.length);
var randomWallTile = wallTiles[randomWallTileIndex];
var holeTile = LK.getAsset('holeTile', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: randomWallTile.x,
	y: randomWallTile.y
});
game.addChild(holeTile);
game.removeChild(randomWallTile);
wallTiles[randomWallTileIndex] = holeTile;
// Create a mask and add it to the game
// Create a boolean variable to track the game state
var fadeEffect = {
	alpha: 0,
	speed: 0.01
};
LK.on('tick', function () {
	if (fadeEffect.alpha < 1) {
		fadeEffect.alpha += fadeEffect.speed;
		game.alpha = fadeEffect.alpha;
	} else {
		// Call the event On game start
		LK.emit('On game start');
		// Start patrolling between defined points
		var currentPatrolPointIndex = 0;
		var patrol = function patrol() {
			if (!isGameStarted) {
				return;
			} // Stop patrolling if game is not started
			currentPatrolPointIndex = (currentPatrolPointIndex + 1) % patrolPoints.length;
			var nextPatrolPoint = patrolPoints[currentPatrolPointIndex];
			if (nextPatrolPoint) {
				character.x = nextPatrolPoint.x;
				character.y = nextPatrolPoint.y;
			}
			character.currentTile = nextPatrolPoint;
			LK.setTimeout(patrol, 1000); // Wait for 1 second before moving to the next patrol point
		};
		LK.setTimeout(patrol, 1000); // Start patrolling after 1 second
	}
});
// Add event listener for touch events;
var originalColor;
game.on('down', function (obj) {
	if (isGameStarted) {
		var pos = obj.event.getLocalPosition(game);
		var x = Math.floor((pos.x - (2048 - gridSize * 100) / 2) / 100);
		var y = Math.floor((pos.y - (2732 - gridSize * 100) / 2) / 100);
		if (selectedTile) {
			selectedTile.tint = tileOriginalColor; // Restore the original color of the previously selected tile
		}
		if (x >= 0 && x < gridSize && y >= 0 && y < gridSize) {
			var index = y * gridSize + x;
			if (floorTiles.includes(grid[index])) {
				selectedTile = grid[index];
				tileOriginalColor = selectedTile.tint;
				selectedTile.tint = 0xeaf23; // Highlight the selected tile in yellow
			} else {
				// Do not deselect the selected tile if a non-floor tile is clicked
				return;
			}
		}
	}
});
// Subscribe to the event On game start
LK.on('On game start', function () {
	// Spawn an instance of the character on the hole tile
	character = LK.getAsset('character', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: holeTile.x,
		y: holeTile.y
	});
	character.currentTile = getTileAtPosition(holeTile.x, holeTile.y); // Correctly initialize character's current tile
	game.addChild(character);
	// Switch the value of the isGameStarted variable
	isGameStarted = true;
	// Set up patrol points around the map
	patrolPoints = [{
		x: 1 * 100 + (2048 - gridSize * 100) / 2,
		y: 1 * 100 + (2732 - gridSize * 100) / 2
	},
	// Top-left corner
	{
		x: (gridSize - 2) * 100 + (2048 - gridSize * 100) / 2,
		y: 1 * 100 + (2732 - gridSize * 100) / 2
	},
	// Top-right corner
	{
		x: (gridSize - 2) * 100 + (2048 - gridSize * 100) / 2,
		y: (gridSize - 2) * 100 + (2732 - gridSize * 100) / 2
	},
	// Bottom-right corner
	{
		x: 1 * 100 + (2048 - gridSize * 100) / 2,
		y: (gridSize - 2) * 100 + (2732 - gridSize * 100) / 2
	} // Bottom-left corner
	].map(function (point) {
		return getTileAtPosition(point.x, point.y);
	});
});
// A* pathfinding algorithm removed
// Define a function to get the tile at a given position
function getTileAtPosition(x, y) {
	var index = Math.floor(y / 100) * gridSize + Math.floor(x / 100);
	return grid[index];
}
// Move the character to the selected tile directly
game.on('down', function (obj) {
	if (isGameStarted && selectedTile) {
		character.x = selectedTile.x;
		character.y = selectedTile.y;
		character.currentTile = selectedTile;
	}
});

===================================================================
--- original.js
+++ change.js
@@ -75,10 +75,12 @@
 				return;
 			} // Stop patrolling if game is not started
 			currentPatrolPointIndex = (currentPatrolPointIndex + 1) % patrolPoints.length;
 			var nextPatrolPoint = patrolPoints[currentPatrolPointIndex];
-			character.x = nextPatrolPoint.x;
-			character.y = nextPatrolPoint.y;
+			if (nextPatrolPoint) {
+				character.x = nextPatrolPoint.x;
+				character.y = nextPatrolPoint.y;
+			}
 			character.currentTile = nextPatrolPoint;
 			LK.setTimeout(patrol, 1000); // Wait for 1 second before moving to the next patrol point
 		};
 		LK.setTimeout(patrol, 1000); // Start patrolling after 1 second