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

/**** 
* Classes
****/ 
// Represents a placed bomb
var Bomb = Container.expand(function (col, row) {
	var self = Container.call(this);
	var graphics = self.attachAsset('bomb', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.col = col;
	self.row = row;
	self.x = getWorldCoords(col, row).x;
	self.y = getWorldCoords(col, row).y;
	self.isBomb = true; // Identifier
	// Start the explosion timer
	var explosionTimer = LK.setTimeout(function () {
		explodeBomb(self);
	}, BOMB_TIMER);
	// Public method to trigger explosion early (chain reaction)
	self.triggerExplosion = function () {
		LK.clearTimeout(explosionTimer);
		explodeBomb(self);
	};
	// Override destroy to clear the timer
	var baseDestroy = self.destroy;
	self.destroy = function () {
		LK.clearTimeout(explosionTimer);
		// Make sure the grid cell is marked empty when bomb is destroyed (e.g., by explosion)
		if (grid[self.col] && grid[self.col][self.row] === CELL_TYPE.BOMB) {
			setCell(self.col, self.row, CELL_TYPE.EMPTY);
		}
		// Remove from active bombs list in game scope
		var index = activeBombs.indexOf(self);
		if (index !== -1) {
			activeBombs.splice(index, 1);
		}
		if (baseDestroy) {
			baseDestroy.call(self);
		} // Call original destroy if exists
	};
	return self;
});
// Represents a single explosion particle/cell
var Explosion = Container.expand(function (col, row) {
	var self = Container.call(this);
	var graphics = self.attachAsset('explosion', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.col = col;
	self.row = row;
	self.x = getWorldCoords(col, row).x;
	self.y = getWorldCoords(col, row).y;
	self.isExplosion = true; // Identifier for collision checks
	// Fade out and destroy after duration
	var timer = LK.setTimeout(function () {
		self.destroy(); // Destroy handled by Game update loop removal
	}, EXPLOSION_DURATION);
	// Override destroy to clear the timer
	var baseDestroy = self.destroy;
	self.destroy = function () {
		LK.clearTimeout(timer);
		if (baseDestroy) {
			baseDestroy.call(self);
		} // Call original destroy if exists
	};
	return self;
});
// Represents the player character
var Player = Container.expand(function (startCol, startRow) {
	var self = Container.call(this);
	var graphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.col = startCol;
	self.row = startRow;
	self.isPlayer = true; // Identifier
	// Snap to initial grid position
	var initialPos = getWorldCoords(self.col, self.row);
	self.x = initialPos.x;
	self.y = initialPos.y;
	self.isMoving = false; // Flag to track movement animation state
	// Public method to move the player
	self.moveTo = function (newCol, newRow) {
		var playerInstance = self; // Store reference to the player instance
		// The walkability check is now done in game.down before calling moveTo
		playerInstance.isMoving = true; // Set flag: player is now moving
		playerInstance.col = newCol;
		playerInstance.row = newRow;
		// Use tween for smooth movement
		var targetPos = getWorldCoords(newCol, newRow);
		tween(playerInstance, {
			// Use playerInstance as tween target
			x: targetPos.x,
			y: targetPos.y
		}, {
			duration: 100,
			// Keep the movement snappy
			easing: tween.linear,
			onFinish: function onFinish() {
				// Use onFinish as per tween plugin documentation
				// Use the stored playerInstance to ensure we reset the flag on the correct object
				playerInstance.isMoving = false; // Clear flag: movement animation finished
			}
		});
		return true; // Move initiated successfully
	};
	// Public method to place a bomb
	self.placeBomb = function () {
		if (activeBombs.length < MAX_BOMBS && getCellType(self.col, self.row) === CELL_TYPE.EMPTY) {
			LK.getSound('place_bomb').play();
			var newBomb = new Bomb(self.col, self.row);
			game.addChild(newBomb);
			activeBombs.push(newBomb);
			setCell(self.col, self.row, CELL_TYPE.BOMB); // Mark cell as containing a bomb
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0xaaaaaa // Light gray background
});

/**** 
* Game Code
****/ 
// --- Constants ---
// Engine will implicitly create assets based on usage below.
// Let's define the shapes we'll use:
var GRID_COLS = 15; // Ensure odd number for wall placement
var GRID_ROWS = 21; // Ensure odd number for wall placement
var CELL_SIZE = 128;
var GRID_WIDTH = GRID_COLS * CELL_SIZE;
var GRID_HEIGHT = GRID_ROWS * CELL_SIZE;
var GRID_OFFSET_X = (2048 - GRID_WIDTH) / 2;
var GRID_OFFSET_Y = (2732 - GRID_HEIGHT) / 2 + 50; // Adjust Y offset slightly down
var CELL_TYPE = {
	EMPTY: 0,
	DESTRUCTIBLE: 1,
	INDESTRUCTIBLE: 2,
	BOMB: 3,
	// Cell temporarily occupied by a bomb
	EXPLOSION: 4 // Cell temporarily occupied by explosion
};
var BOMB_TIMER = 2500; // Milliseconds before bomb explodes
var EXPLOSION_DURATION = 400; // Milliseconds explosion visuals last
var BOMB_RANGE = 2; // Number of cells explosion reaches in each direction
var MAX_BOMBS = 1; // Max bombs player can have active at once
var BRICK_DENSITY = 0.6; // Probability of a potential spot having a brick
// --- Game State Variables ---
var grid = []; // 2D array holding CELL_TYPE for each cell
var gridSprites = []; // 2D array holding visual sprites for walls/bricks
var player;
var activeBombs = [];
var activeExplosions = []; // Array to hold active Explosion objects
var score = 0;
var scoreTxt;
var isGameOver = false;
// --- Helper Functions ---
// Convert world coordinates (relative to game stage 0,0) to grid cell indices
function getGridCoords(worldX, worldY) {
	// Calculate coordinates relative to the grid's top-left corner
	var relativeX = worldX - GRID_OFFSET_X;
	var relativeY = worldY - GRID_OFFSET_Y;
	// Calculate the column and row index using Math.floor
	var col = Math.floor(relativeX / CELL_SIZE);
	var row = Math.floor(relativeY / CELL_SIZE);
	// Note: We are not adding boundary checks here, as the issue seems
	// to be with the core calculation, not clicks outside the grid.
	// The calling code should handle movement validation based on these indices.
	return {
		col: col,
		row: row
	};
}
// Convert grid cell indices to world coordinates (center of the cell)
function getWorldCoords(col, row) {
	var x = GRID_OFFSET_X + col * CELL_SIZE + CELL_SIZE / 2;
	var y = GRID_OFFSET_Y + row * CELL_SIZE + CELL_SIZE / 2;
	return {
		x: x,
		y: y
	};
}
// Get the type of a cell, handling out-of-bounds
function getCellType(col, row) {
	if (col < 0 || col >= GRID_COLS || row < 0 || row >= GRID_ROWS) {
		return CELL_TYPE.INDESTRUCTIBLE; // Treat out of bounds as walls
	}
	return grid[col][row];
}
// Set the type of a cell
function setCell(col, row, type) {
	if (col >= 0 && col < GRID_COLS && row >= 0 && row < GRID_ROWS) {
		grid[col][row] = type;
	}
}
// Check if a cell is valid and empty for movement
function isWalkable(col, row) {
	var cellType = getCellType(col, row);
	// A cell is walkable only if it's currently empty. Player cannot initiate move into other tiles.
	return cellType === CELL_TYPE.EMPTY;
}
// --- Grid Generation ---
function generateGrid() {
	grid = [];
	gridSprites = [];
	// Clear previous sprites if any
	game.children.forEach(function (child) {
		if (child.isGridElement) {
			// Add a flag to identify grid sprites
			child.destroy();
		}
	});
	game.removeChildren(); // Clear all children before regenerating
	// Add floor tiles everywhere first
	for (var c = 0; c < GRID_COLS; c++) {
		for (var r = 0; r < GRID_ROWS; r++) {
			var floorTile = LK.getAsset('floor', {
				anchorX: 0.0,
				anchorY: 0.0
			});
			floorTile.x = GRID_OFFSET_X + c * CELL_SIZE;
			floorTile.y = GRID_OFFSET_Y + r * CELL_SIZE;
			floorTile.isGridElement = true;
			game.addChild(floorTile);
		}
	}
	for (var c = 0; c < GRID_COLS; c++) {
		grid[c] = [];
		gridSprites[c] = [];
		for (var r = 0; r < GRID_ROWS; r++) {
			var cellType;
			var sprite = null;
			// Place indestructible walls around border and in a checkerboard pattern inside
			if (c === 0 || c === GRID_COLS - 1 || r === 0 || r === GRID_ROWS - 1 || c % 2 === 0 && r % 2 === 0) {
				cellType = CELL_TYPE.INDESTRUCTIBLE;
				sprite = LK.getAsset('wall', {
					anchorX: 0.0,
					anchorY: 0.0
				});
			} else {
				// Place destructible bricks randomly, ensuring player start area is clear
				if (c <= 2 && r <= 2 || c >= GRID_COLS - 3 && r >= GRID_ROWS - 3) {
					// Clear corners for potential spawns
					cellType = CELL_TYPE.EMPTY;
				} else if (Math.random() < BRICK_DENSITY) {
					cellType = CELL_TYPE.DESTRUCTIBLE;
					sprite = LK.getAsset('brick', {
						anchorX: 0.0,
						anchorY: 0.0
					});
				} else {
					cellType = CELL_TYPE.EMPTY;
				}
			}
			grid[c][r] = cellType;
			if (sprite) {
				sprite.x = GRID_OFFSET_X + c * CELL_SIZE;
				sprite.y = GRID_OFFSET_Y + r * CELL_SIZE;
				sprite.isGridElement = true; // Mark as part of the grid visuals
				game.addChild(sprite);
				gridSprites[c][r] = sprite;
			} else {
				gridSprites[c][r] = null;
			}
		}
	}
	// Ensure player start is clear
	setCell(1, 1, CELL_TYPE.EMPTY);
	setCell(1, 2, CELL_TYPE.EMPTY);
	setCell(2, 1, CELL_TYPE.EMPTY);
	if (gridSprites[1] && gridSprites[1][1]) {
		var _gridSprites$1$;
		(_gridSprites$1$ = gridSprites[1][1]) === null || _gridSprites$1$ === void 0 || _gridSprites$1$.destroy();
		gridSprites[1][1] = null;
	}
	if (gridSprites[1] && gridSprites[1][2]) {
		var _gridSprites$1$2;
		(_gridSprites$1$2 = gridSprites[1][2]) === null || _gridSprites$1$2 === void 0 || _gridSprites$1$2.destroy();
		gridSprites[1][2] = null;
	}
	if (gridSprites[2] && gridSprites[2][1]) {
		var _gridSprites$2$;
		(_gridSprites$2$ = gridSprites[2][1]) === null || _gridSprites$2$ === void 0 || _gridSprites$2$.destroy();
		gridSprites[2][1] = null;
	}
}
// --- Explosion Handling ---
function createExplosion(col, row) {
	if (col < 0 || col >= GRID_COLS || row < 0 || row >= GRID_ROWS) {
		return false;
	} // Out of bounds
	var cellType = getCellType(col, row);
	if (cellType === CELL_TYPE.INDESTRUCTIBLE) {
		return false; // Explosion stops at indestructible walls
	}
	// Create visual explosion part
	var explosionPart = new Explosion(col, row);
	game.addChild(explosionPart);
	activeExplosions.push(explosionPart);
	setCell(col, row, CELL_TYPE.EXPLOSION); // Mark cell as exploding
	// Check for chain reactions or destroying bricks
	if (cellType === CELL_TYPE.DESTRUCTIBLE) {
		var brickSprite = gridSprites[col][row];
		if (brickSprite) {
			brickSprite.destroy();
			gridSprites[col][row] = null;
		}
		setCell(col, row, CELL_TYPE.EXPLOSION); // Becomes explosion temporarily
		LK.getSound('destroy_brick').play();
		LK.setScore(LK.getScore() + 10); // Award score for destroying brick
		scoreTxt.setText(LK.getScore());
		return false; // Explosion stops after destroying a brick
	} else if (cellType === CELL_TYPE.BOMB) {
		// Find the bomb object at this location and trigger it
		var bombToTrigger = null;
		for (var i = 0; i < activeBombs.length; i++) {
			if (activeBombs[i].col === col && activeBombs[i].row === row) {
				bombToTrigger = activeBombs[i];
				break;
			}
		}
		if (bombToTrigger && !bombToTrigger.isExploding) {
			// Prevent infinite loops if already triggered
			bombToTrigger.isExploding = true; // Mark as exploding to avoid re-triggering
			bombToTrigger.triggerExplosion();
		}
		return false; // Chain reaction handles further explosion; stop this particular ray
	}
	return true; // Explosion continues
}
function explodeBomb(bomb) {
	if (!bomb || bomb.destroyed) {
		return;
	} // Bomb might already be destroyed by chain reaction
	LK.getSound('explosion_sound').play();
	var centerCol = bomb.col;
	var centerRow = bomb.row;
	// Remove bomb object itself first to prevent chain reaction with self
	bomb.destroy(); // This also removes from activeBombs and sets cell to EMPTY
	// Create explosion at the center
	createExplosion(centerCol, centerRow);
	// Create explosions outwards in four directions
	var directions = [[0, 1], [0, -1], [1, 0], [-1, 0]]; // Down, Up, Right, Left
	for (var i = 0; i < directions.length; i++) {
		var dx = directions[i][0];
		var dy = directions[i][1];
		for (var r = 1; r <= BOMB_RANGE; r++) {
			var currentC = centerCol + dx * r;
			var currentR = centerRow + dy * r;
			if (!createExplosion(currentC, currentR)) {
				break; // Stop this direction if explosion is blocked
			}
		}
	}
}
// --- Game Initialization ---
function initGame() {
	isGameOver = false;
	score = 0;
	LK.setScore(0);
	activeBombs = [];
	activeExplosions = [];
	generateGrid();
	// Create Player
	player = new Player(1, 1); // Start at top-left clear area
	game.addChild(player);
	// Score Display
	scoreTxt = new Text2('0', {
		size: 80,
		fill: 0xFFFFFF
	});
	scoreTxt.anchor.set(0.5, 0);
	LK.gui.top.addChild(scoreTxt); // Add score to top center UI
	// Bomb Button
	var bombButton = LK.getAsset('bomb_button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	bombButton.down = function () {
		if (player && !isGameOver) {
			player.placeBomb();
		}
	};
	// Place button carefully, avoiding bottom corners if possible, maybe bottom center?
	// LK.gui.bottom.addChild(bombButton); // Center bottom
	// Or bottom right, ensuring it's not too close to the edge
	bombButton.x = -150; // Offset from right edge
	bombButton.y = -150; // Offset from bottom edge
	LK.gui.bottomRight.addChild(bombButton);
}
// --- Event Handlers ---
// Handle player movement by tapping adjacent walkable cells
game.down = function (x, y, obj) {
	// Check if player exists, game isn't over, AND player is not already moving
	if (isGameOver || !player || player.isMoving) {
		return;
	} // Ignore taps if game over, player doesn't exist, or player is currently moving
	var gameCoords = game.toLocal({
		x: x,
		y: y
	}); // Convert event coords to game coords
	var tapped = getGridCoords(gameCoords.x, gameCoords.y);
	console.log(tapped);
	var playerCell = {
		col: player.col,
		row: player.row
	};
	// Check if the tapped cell is adjacent (not diagonal)
	var dx = tapped.col - playerCell.col;
	var dy = tapped.row - playerCell.row;
	if (Math.abs(dx) + Math.abs(dy) === 1) {
		// Is adjacent?
		// Check if the target cell is walkable (empty) before moving
		if (isWalkable(tapped.col, tapped.row)) {
			console.log("walkable");
			player.moveTo(tapped.col, tapped.row);
		}
	}
};
// --- Game Update Loop ---
game.update = function () {
	if (isGameOver) {
		return;
	}
	// Check for player collision with explosions
	var playerCol = player.col;
	var playerRow = player.row;
	if (getCellType(playerCol, playerRow) === CELL_TYPE.EXPLOSION) {
		LK.getSound('player_die').play();
		LK.effects.flashObject(player, 0xff0000, 300); // Flash player red
		isGameOver = true;
		LK.setTimeout(function () {
			LK.showGameOver(); // Show game over screen after a short delay
		}, 500);
		return; // Stop further updates after game over
	}
	// Clean up finished explosions and reset cell types
	for (var i = activeExplosions.length - 1; i >= 0; i--) {
		var explosion = activeExplosions[i];
		// Check if the explosion sprite itself has been destroyed (by its internal timer)
		// Accessing internal properties like `_destroyed` is generally discouraged,
		// but necessary if the destroy mechanism is purely timer-based without explicit flags.
		// A better approach would be for Explosion class to set a 'finished' flag.
		// Let's assume Explosion.destroy correctly removes it from the stage.
		// We need a reliable way to know when to remove from activeExplosions and reset the grid cell.
		// We'll check if it's still parented to the game stage as a proxy.
		if (!explosion.parent) {
			// If it's been removed from the stage
			// Reset the grid cell only if it's still marked as EXPLOSION
			if (getCellType(explosion.col, explosion.row) === CELL_TYPE.EXPLOSION) {
				setCell(explosion.col, explosion.row, CELL_TYPE.EMPTY);
			}
			activeExplosions.splice(i, 1); // Remove from active list
		}
	}
	// Optional: Add win condition check (e.g., all bricks destroyed)
	// let bricksRemaining = false;
	// for (var c = 0; c < GRID_COLS; c++) {
	//     for (var r = 0; r < GRID_ROWS; r++) {
	//         if (getCellType(c, r) === CELL_TYPE.DESTRUCTIBLE) {
	//             bricksRemaining = true;
	//             break;
	//         }
	//     }
	//     if (bricksRemaining) break;
	// }
	// if (!bricksRemaining) {
	//     LK.showYouWin();
	// }
};
// --- Start the Game ---
initGame();

===================================================================
--- original.js
+++ change.js
@@ -167,12 +167,19 @@
 var score = 0;
 var scoreTxt;
 var isGameOver = false;
 // --- Helper Functions ---
-// Convert screen coordinates to grid cell indices
-function getGridCoords(screenX, screenY) {
-	var col = Math.floor((screenX - GRID_OFFSET_X) / CELL_SIZE);
-	var row = Math.floor((screenY - GRID_OFFSET_Y) / CELL_SIZE);
+// Convert world coordinates (relative to game stage 0,0) to grid cell indices
+function getGridCoords(worldX, worldY) {
+	// Calculate coordinates relative to the grid's top-left corner
+	var relativeX = worldX - GRID_OFFSET_X;
+	var relativeY = worldY - GRID_OFFSET_Y;
+	// Calculate the column and row index using Math.floor
+	var col = Math.floor(relativeX / CELL_SIZE);
+	var row = Math.floor(relativeY / CELL_SIZE);
+	// Note: We are not adding boundary checks here, as the issue seems
+	// to be with the core calculation, not clicks outside the grid.
+	// The calling code should handle movement validation based on these indices.
 	return {
 		col: col,
 		row: row
 	};