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

/**** 
* Classes
****/ 
var ControlButton = Container.expand(function (direction) {
	var self = Container.call(this);
	var buttonSprite = self.attachAsset('controlButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var arrowSprite = self.attachAsset('buttonArrow', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set arrow direction based on button type
	if (direction === 'up') {
		arrowSprite.rotation = 0;
	} else if (direction === 'right') {
		arrowSprite.rotation = Math.PI / 2;
	} else if (direction === 'down') {
		arrowSprite.rotation = Math.PI;
	} else if (direction === 'left') {
		arrowSprite.rotation = Math.PI * 1.5;
	} else if (direction === 'attack') {
		arrowSprite.visible = false;
		buttonSprite = self.attachAsset('attackButton', {
			anchorX: 0.5,
			anchorY: 0.5
		});
	}
	self.direction = direction;
	self.pressed = false;
	self.down = function (x, y, obj) {
		self.pressed = true;
		buttonSprite.alpha = 0.7;
	};
	self.up = function (x, y, obj) {
		self.pressed = false;
		buttonSprite.alpha = 1;
	};
	return self;
});
var MapCell = Container.expand(function () {
	var self = Container.call(this);
	self.type = 0; // 0 = floor, 1 = wall
	self.monster = null;
	self.treasure = null;
	self.setType = function (type) {
		self.type = type;
		self.updateVisual();
	};
	self.updateVisual = function () {
		self.removeChildren();
		if (self.type === 1) {
			self.attachAsset('mapWall', {
				anchorX: 0,
				anchorY: 0
			});
		} else {
			self.attachAsset('mapFloor', {
				anchorX: 0,
				anchorY: 0
			});
		}
	};
	self.addMonster = function () {
		if (self.type === 0 && !self.monster && !self.treasure) {
			self.monster = true;
			return true;
		}
		return false;
	};
	self.addTreasure = function () {
		if (self.type === 0 && !self.monster && !self.treasure) {
			self.treasure = true;
			return true;
		}
		return false;
	};
	self.removeMonster = function () {
		self.monster = null;
	};
	self.removeTreasure = function () {
		self.treasure = null;
	};
	return self;
});
var Monster = Container.expand(function () {
	var self = Container.call(this);
	var monsterSprite = self.attachAsset('monster', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.mapX = 0;
	self.mapY = 0;
	self.health = 3;
	self.takeDamage = function () {
		self.health -= 1;
		LK.getSound('hit').play();
		// Visual feedback for hit
		tween(monsterSprite, {
			alpha: 0.2
		}, {
			duration: 100,
			onFinish: function onFinish() {
				tween(monsterSprite, {
					alpha: 1
				}, {
					duration: 100
				});
			}
		});
		return self.health <= 0;
	};
	return self;
});
var Projectile = Container.expand(function () {
	var self = Container.call(this);
	var projectileSprite = self.attachAsset('projectile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.dirX = 0;
	self.dirY = 0;
	self.speed = 0.2;
	self.range = 5;
	self.distanceTraveled = 0;
	self.update = function (deltaTime) {
		// Move projectile
		var moveX = self.dirX * self.speed * deltaTime;
		var moveY = self.dirY * self.speed * deltaTime;
		self.x += moveX;
		self.y += moveY;
		self.distanceTraveled += Math.sqrt(moveX * moveX + moveY * moveY);
		return self.distanceTraveled >= self.range;
	};
	return self;
});
var RaycastStrip = Container.expand(function () {
	var self = Container.call(this);
	var wall = self.attachAsset('wall', {
		anchorX: 0,
		anchorY: 0
	});
	var ceiling = self.attachAsset('ceiling', {
		anchorX: 0,
		anchorY: 0
	});
	var floor = self.attachAsset('floor', {
		anchorX: 0,
		anchorY: 0
	});
	self.updateStrip = function (stripWidth, wallHeight, stripIdx, wallType, distance) {
		// Wall setup
		wall.width = stripWidth;
		wall.height = wallHeight;
		wall.y = (2732 - wallHeight) / 2;
		// Ceiling setup
		ceiling.width = stripWidth;
		ceiling.height = wall.y;
		ceiling.y = 0;
		// Floor setup
		floor.width = stripWidth;
		floor.height = ceiling.height;
		floor.y = wall.y + wallHeight;
		// Adjust positions
		self.x = stripIdx * stripWidth;
		// Add distance shading effect
		var shade = Math.max(0.3, 1 - distance / 10);
		wall.alpha = shade;
		ceiling.alpha = shade * 0.7;
		floor.alpha = shade * 0.8;
	};
	return self;
});
var Treasure = Container.expand(function () {
	var self = Container.call(this);
	var treasureSprite = self.attachAsset('treasure', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.mapX = 0;
	self.mapY = 0;
	self.value = 1;
	// Animate the treasure to make it more appealing
	var _animateTreasure = function animateTreasure() {
		tween(treasureSprite, {
			rotation: Math.PI * 2
		}, {
			duration: 2000,
			onFinish: function onFinish() {
				treasureSprite.rotation = 0;
				_animateTreasure();
			}
		});
	};
	_animateTreasure();
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x111111
});

/**** 
* Game Code
****/ 
// Game constants
var MAP_SIZE = 16;
var CELL_SIZE = 20;
var MINI_MAP_SCALE = 1;
var STRIP_WIDTH = 8;
var NUM_RAYS = Math.ceil(2048 / STRIP_WIDTH);
var FOV = Math.PI / 3; // 60 degrees field of view
var HALF_FOV = FOV / 2;
var PLAYER_MOVE_SPEED = 0.05;
var PLAYER_TURN_SPEED = 0.04;
var WALL_HEIGHT_FACTOR = 600;
var MAX_RENDER_DISTANCE = 16;
var MONSTER_COUNT = 5;
var TREASURE_COUNT = 10;
// Game state
var map = [];
var player = {
	x: 1.5,
	y: 1.5,
	dir: 0,
	health: 5,
	score: 0,
	level: storage.level || 1
};
var controls = {
	forward: false,
	backward: false,
	left: false,
	right: false,
	attack: false
};
var monsters = [];
var treasures = [];
var projectiles = [];
var lastTime = Date.now();
// UI elements
var miniMap;
var rayCastView;
var healthText;
var scoreText;
var levelText;
var controlButtons = {};
var playerMarker;
// Setup game
function setupGame() {
	// Create the rayCast view container
	rayCastView = new Container();
	game.addChild(rayCastView);
	// Create raycast strips
	for (var i = 0; i < NUM_RAYS; i++) {
		var strip = new RaycastStrip();
		rayCastView.addChild(strip);
	}
	// Create minimap container
	miniMap = new Container();
	miniMap.x = 20;
	miniMap.y = 20;
	game.addChild(miniMap);
	// Generate map
	generateMap();
	// Create player marker
	playerMarker = game.addChild(LK.getAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	// Create UI elements
	createUI();
	// Create control buttons
	createControlButtons();
	// Start background music
	LK.playMusic('dungeon');
}
function generateMap() {
	// Clear existing map
	miniMap.removeChildren();
	map = [];
	// Remove existing monsters and treasures
	for (var i = 0; i < monsters.length; i++) {
		monsters[i].destroy();
	}
	monsters = [];
	for (var i = 0; i < treasures.length; i++) {
		treasures[i].destroy();
	}
	treasures = [];
	// Clear projectiles
	for (var i = 0; i < projectiles.length; i++) {
		projectiles[i].destroy();
	}
	projectiles = [];
	// Generate base map with borders
	for (var y = 0; y < MAP_SIZE; y++) {
		map[y] = [];
		for (var x = 0; x < MAP_SIZE; x++) {
			var cell = new MapCell();
			cell.x = x * CELL_SIZE * MINI_MAP_SCALE;
			cell.y = y * CELL_SIZE * MINI_MAP_SCALE;
			// Create outer walls
			if (x === 0 || y === 0 || x === MAP_SIZE - 1 || y === MAP_SIZE - 1) {
				cell.setType(1); // Wall
			} else {
				// Random interior walls based on level difficulty
				var wallChance = 0.2 + player.level * 0.03;
				if (Math.random() < wallChance && !(x === 1 && y === 1)) {
					// Ensure starting position is clear
					cell.setType(1); // Wall
				} else {
					cell.setType(0); // Floor
				}
			}
			map[y][x] = cell;
			miniMap.addChild(cell);
		}
	}
	// Create monsters
	var monstersToPlace = MONSTER_COUNT + Math.floor(player.level * 0.5);
	for (var i = 0; i < monstersToPlace; i++) {
		placeMonster();
	}
	// Create treasures
	var treasuresToPlace = TREASURE_COUNT;
	for (var i = 0; i < treasuresToPlace; i++) {
		placeTreasure();
	}
	// Reset player position
	player.x = 1.5;
	player.y = 1.5;
	player.dir = 0;
}
function placeMonster() {
	// Find a random empty cell
	var x, y;
	var attempts = 0;
	do {
		x = Math.floor(Math.random() * (MAP_SIZE - 2)) + 1;
		y = Math.floor(Math.random() * (MAP_SIZE - 2)) + 1;
		attempts++;
		// Make sure it's not too close to the player
		var distToPlayer = Math.sqrt(Math.pow(x - player.x, 2) + Math.pow(y - player.y, 2));
		if (attempts > 100) break; // Prevent infinite loop
	} while (map[y][x].type !== 0 || map[y][x].monster || map[y][x].treasure || distToPlayer < 3);
	if (attempts <= 100) {
		map[y][x].addMonster();
		var monster = new Monster();
		monster.mapX = x;
		monster.mapY = y;
		monster.health = 2 + Math.floor(player.level / 3); // Monsters get tougher with level
		monsters.push(monster);
		game.addChild(monster);
	}
}
function placeTreasure() {
	// Find a random empty cell
	var x, y;
	var attempts = 0;
	do {
		x = Math.floor(Math.random() * (MAP_SIZE - 2)) + 1;
		y = Math.floor(Math.random() * (MAP_SIZE - 2)) + 1;
		attempts++;
		if (attempts > 100) break; // Prevent infinite loop
	} while (map[y][x].type !== 0 || map[y][x].monster || map[y][x].treasure);
	if (attempts <= 100) {
		map[y][x].addTreasure();
		var treasure = new Treasure();
		treasure.mapX = x;
		treasure.mapY = y;
		treasure.value = 1 + Math.floor(Math.random() * player.level);
		treasures.push(treasure);
		game.addChild(treasure);
	}
}
function createUI() {
	// Health display
	healthText = new Text2('Health: ' + player.health, {
		size: 40,
		fill: 0xFF5555
	});
	healthText.anchor.set(0, 0);
	LK.gui.topRight.addChild(healthText);
	healthText.x = -200;
	healthText.y = 20;
	// Score display
	scoreText = new Text2('Score: ' + player.score, {
		size: 40,
		fill: 0xFFFF55
	});
	scoreText.anchor.set(0, 0);
	LK.gui.topRight.addChild(scoreText);
	scoreText.x = -200;
	scoreText.y = 80;
	// Level display
	levelText = new Text2('Level: ' + player.level, {
		size: 40,
		fill: 0x55FF55
	});
	levelText.anchor.set(0, 0);
	LK.gui.topRight.addChild(levelText);
	levelText.x = -200;
	levelText.y = 140;
	// Update UI displays
	updateUI();
}
function updateUI() {
	healthText.setText('Health: ' + player.health);
	scoreText.setText('Score: ' + player.score);
	levelText.setText('Level: ' + player.level);
	// Update score in LK system
	LK.setScore(player.score);
}
function createControlButtons() {
	// Create directional buttons
	controlButtons.up = new ControlButton('up');
	controlButtons.up.x = 200;
	controlButtons.up.y = 2732 - 300;
	game.addChild(controlButtons.up);
	controlButtons.right = new ControlButton('right');
	controlButtons.right.x = 350;
	controlButtons.right.y = 2732 - 150;
	game.addChild(controlButtons.right);
	controlButtons.down = new ControlButton('down');
	controlButtons.down.x = 200;
	controlButtons.down.y = 2732 - 150;
	game.addChild(controlButtons.down);
	controlButtons.left = new ControlButton('left');
	controlButtons.left.x = 50;
	controlButtons.left.y = 2732 - 150;
	game.addChild(controlButtons.left);
	// Create attack button on the right side
	controlButtons.attack = new ControlButton('attack');
	controlButtons.attack.x = 2048 - 200;
	controlButtons.attack.y = 2732 - 200;
	game.addChild(controlButtons.attack);
}
function rayCasting() {
	var rayAngle, distToWall, rayDirX, rayDirY, mapCheckX, mapCheckY;
	var distX, distY;
	var rayStartX = player.x;
	var rayStartY = player.y;
	for (var rayIdx = 0; rayIdx < NUM_RAYS; rayIdx++) {
		// Calculate ray angle (center ray + offset based on ray index)
		rayAngle = player.dir - HALF_FOV + rayIdx / NUM_RAYS * FOV;
		// Get direction vector
		rayDirX = Math.cos(rayAngle);
		rayDirY = Math.sin(rayAngle);
		// Distance to wall
		distToWall = 0;
		hitWall = false;
		// Step size for ray casting
		var stepSizeX = Math.abs(1 / rayDirX);
		var stepSizeY = Math.abs(1 / rayDirY);
		// Which block we're checking
		mapCheckX = Math.floor(rayStartX);
		mapCheckY = Math.floor(rayStartY);
		// Length of ray from current position to next x or y-side
		var sideDistX, sideDistY;
		// Direction to step in x or y direction (either +1 or -1)
		var stepX = rayDirX >= 0 ? 1 : -1;
		var stepY = rayDirY >= 0 ? 1 : -1;
		// Calculate distance to first x and y side
		if (rayDirX < 0) {
			sideDistX = (rayStartX - mapCheckX) * stepSizeX;
		} else {
			sideDistX = (mapCheckX + 1.0 - rayStartX) * stepSizeX;
		}
		if (rayDirY < 0) {
			sideDistY = (rayStartY - mapCheckY) * stepSizeY;
		} else {
			sideDistY = (mapCheckY + 1.0 - rayStartY) * stepSizeY;
		}
		// Perform DDA (Digital Differential Analysis)
		var hit = false;
		var side = 0; // 0 for x-side, 1 for y-side
		var maxDistance = MAX_RENDER_DISTANCE;
		while (!hit && distToWall < maxDistance) {
			// Jump to next map square
			if (sideDistX < sideDistY) {
				sideDistX += stepSizeX;
				mapCheckX += stepX;
				side = 0;
			} else {
				sideDistY += stepSizeY;
				mapCheckY += stepY;
				side = 1;
			}
			// Check if ray has hit a wall
			if (mapCheckX < 0 || mapCheckX >= MAP_SIZE || mapCheckY < 0 || mapCheckY >= MAP_SIZE || !map[mapCheckY] || !map[mapCheckY][mapCheckX]) {
				hit = true;
				distToWall = maxDistance;
			} else if (map[mapCheckY][mapCheckX].type === 1) {
				hit = true;
				// Calculate exact distance to avoid fisheye effect
				if (side === 0) {
					distToWall = (mapCheckX - rayStartX + (1 - stepX) / 2) / rayDirX;
				} else {
					distToWall = (mapCheckY - rayStartY + (1 - stepY) / 2) / rayDirY;
				}
			}
		}
		// Calculate height of wall based on distance
		var wallHeight = Math.min(2732, WALL_HEIGHT_FACTOR / distToWall);
		// Update the strip
		var strip = rayCastView.children[rayIdx];
		strip.updateStrip(STRIP_WIDTH, wallHeight, rayIdx, 1, distToWall);
	}
	// Render monsters and treasures
	renderEntities();
}
function renderEntities() {
	// First, hide all entities
	for (var i = 0; i < monsters.length; i++) {
		monsters[i].visible = false;
	}
	for (var i = 0; i < treasures.length; i++) {
		treasures[i].visible = false;
	}
	// Calculate entity positions relative to player
	for (var i = 0; i < monsters.length; i++) {
		var monster = monsters[i];
		// Vector from player to monster
		var dx = monster.mapX - player.x;
		var dy = monster.mapY - player.y;
		// Distance to monster
		var dist = Math.sqrt(dx * dx + dy * dy);
		// Angle between player's direction and monster
		var angle = Math.atan2(dy, dx) - player.dir;
		// Normalize angle
		while (angle < -Math.PI) angle += Math.PI * 2;
		while (angle > Math.PI) angle -= Math.PI * 2;
		// Check if monster is in field of view
		if (Math.abs(angle) < HALF_FOV && dist < MAX_RENDER_DISTANCE) {
			// Check if there's a wall between player and monster
			var rayDirX = Math.cos(player.dir + angle);
			var rayDirY = Math.sin(player.dir + angle);
			var rayHit = castRayToPoint(player.x, player.y, monster.mapX, monster.mapY);
			if (!rayHit.hit || rayHit.dist > dist - 0.5) {
				// Monster is visible
				monster.visible = true;
				// Calculate screen position
				var screenX = (0.5 + angle / FOV) * 2048;
				// Calculate height based on distance
				var height = WALL_HEIGHT_FACTOR / dist;
				// Position monster
				monster.x = screenX;
				monster.y = 2732 / 2;
				// Scale monster based on distance
				var scale = height / 100;
				monster.scale.set(scale, scale);
			}
		}
	}
	// Render treasures with the same logic
	for (var i = 0; i < treasures.length; i++) {
		var treasure = treasures[i];
		var dx = treasure.mapX - player.x;
		var dy = treasure.mapY - player.y;
		var dist = Math.sqrt(dx * dx + dy * dy);
		var angle = Math.atan2(dy, dx) - player.dir;
		while (angle < -Math.PI) angle += Math.PI * 2;
		while (angle > Math.PI) angle -= Math.PI * 2;
		if (Math.abs(angle) < HALF_FOV && dist < MAX_RENDER_DISTANCE) {
			var rayHit = castRayToPoint(player.x, player.y, treasure.mapX, treasure.mapY);
			if (!rayHit.hit || rayHit.dist > dist - 0.5) {
				treasure.visible = true;
				var screenX = (0.5 + angle / FOV) * 2048;
				var height = WALL_HEIGHT_FACTOR / dist;
				treasure.x = screenX;
				treasure.y = 2732 / 2;
				var scale = height / 100;
				treasure.scale.set(scale, scale);
			}
		}
	}
}
function castRayToPoint(startX, startY, targetX, targetY) {
	var rayDirX = targetX - startX;
	var rayDirY = targetY - startY;
	var distance = Math.sqrt(rayDirX * rayDirX + rayDirY * rayDirY);
	rayDirX /= distance;
	rayDirY /= distance;
	var mapCheckX = Math.floor(startX);
	var mapCheckY = Math.floor(startY);
	var stepSizeX = Math.abs(1 / rayDirX);
	var stepSizeY = Math.abs(1 / rayDirY);
	var stepX = rayDirX >= 0 ? 1 : -1;
	var stepY = rayDirY >= 0 ? 1 : -1;
	var sideDistX, sideDistY;
	if (rayDirX < 0) {
		sideDistX = (startX - mapCheckX) * stepSizeX;
	} else {
		sideDistX = (mapCheckX + 1.0 - startX) * stepSizeX;
	}
	if (rayDirY < 0) {
		sideDistY = (startY - mapCheckY) * stepSizeY;
	} else {
		sideDistY = (mapCheckY + 1.0 - startY) * stepSizeY;
	}
	var hit = false;
	var side = 0;
	var distToWall = 0;
	while (!hit && distToWall < distance) {
		if (sideDistX < sideDistY) {
			sideDistX += stepSizeX;
			mapCheckX += stepX;
			side = 0;
			distToWall = sideDistX - stepSizeX;
		} else {
			sideDistY += stepSizeY;
			mapCheckY += stepY;
			side = 1;
			distToWall = sideDistY - stepSizeY;
		}
		if (mapCheckX < 0 || mapCheckX >= MAP_SIZE || mapCheckY < 0 || mapCheckY >= MAP_SIZE || !map[mapCheckY] || !map[mapCheckY][mapCheckX]) {
			break;
		} else if (map[mapCheckY][mapCheckX].type === 1) {
			hit = true;
		}
	}
	return {
		hit: hit,
		dist: distToWall
	};
}
function updateControls() {
	// Read from control buttons
	controls.forward = controlButtons.up.pressed;
	controls.backward = controlButtons.down.pressed;
	controls.left = controlButtons.left.pressed;
	controls.right = controlButtons.right.pressed;
	controls.attack = controlButtons.attack.pressed;
}
function updatePlayerMovement(deltaTime) {
	var moveSpeed = PLAYER_MOVE_SPEED * deltaTime;
	var turnSpeed = PLAYER_TURN_SPEED * deltaTime;
	var dx = 0,
		dy = 0;
	var didMove = false;
	// Handle rotation
	if (controls.left) {
		player.dir -= turnSpeed;
		while (player.dir < 0) player.dir += Math.PI * 2;
	}
	if (controls.right) {
		player.dir += turnSpeed;
		while (player.dir >= Math.PI * 2) player.dir -= Math.PI * 2;
	}
	// Handle movement
	if (controls.forward) {
		dx += Math.cos(player.dir) * moveSpeed;
		dy += Math.sin(player.dir) * moveSpeed;
		didMove = true;
	}
	if (controls.backward) {
		dx -= Math.cos(player.dir) * moveSpeed;
		dy -= Math.sin(player.dir) * moveSpeed;
		didMove = true;
	}
	// Collision detection
	var newX = player.x + dx;
	var newY = player.y + dy;
	var cellX = Math.floor(newX);
	var cellY = Math.floor(newY);
	// Check if we can move to the new position
	if (cellX >= 0 && cellX < MAP_SIZE && cellY >= 0 && cellY < MAP_SIZE && map[cellY] && map[cellY][cellX]) {
		if (map[cellY][cellX].type === 0) {
			player.x = newX;
			player.y = newY;
			if (didMove && LK.ticks % 20 === 0) {
				LK.getSound('walk').play();
			}
		}
	}
	// Attack handling
	if (controls.attack && LK.ticks % 15 === 0) {
		attackAction();
	}
	// Check for collisions with monsters
	checkMonsterCollisions();
	// Check for collisions with treasures
	checkTreasureCollisions();
	// Update player marker on minimap
	updateMiniMap();
}
function attackAction() {
	LK.getSound('attack').play();
	// Create a projectile
	var projectile = new Projectile();
	projectile.x = 2048 / 2;
	projectile.y = 2732 - 300;
	projectile.dirX = Math.cos(player.dir);
	projectile.dirY = Math.sin(player.dir);
	projectiles.push(projectile);
	game.addChild(projectile);
	// Projectile visual effect
	tween(projectile, {
		y: 2732 / 2
	}, {
		duration: 100,
		easing: tween.easeOut
	});
}
function updateProjectiles(deltaTime) {
	for (var i = projectiles.length - 1; i >= 0; i--) {
		var projectile = projectiles[i];
		// Convert screen projectile to map projectile
		var mapX = player.x + projectile.distanceTraveled * Math.cos(player.dir);
		var mapY = player.y + projectile.distanceTraveled * Math.sin(player.dir);
		// Check if projectile hits a wall
		var cellX = Math.floor(mapX);
		var cellY = Math.floor(mapY);
		var hitWall = false;
		if (cellX < 0 || cellX >= MAP_SIZE || cellY < 0 || cellY >= MAP_SIZE || !map[cellY] || !map[cellY][cellX]) {
			hitWall = true;
		} else if (map[cellY][cellX].type === 1) {
			hitWall = true;
		}
		// Check if projectile hits a monster
		var hitMonster = false;
		var hitMonsterIndex = -1;
		for (var j = 0; j < monsters.length; j++) {
			var monster = monsters[j];
			var dx = monster.mapX - mapX;
			var dy = monster.mapY - mapY;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < 0.5) {
				hitMonster = true;
				hitMonsterIndex = j;
				break;
			}
		}
		// Update projectile
		var remove = projectile.update(deltaTime);
		if (remove || hitWall || hitMonster) {
			// Handle monster hit
			if (hitMonster && hitMonsterIndex !== -1) {
				var monster = monsters[hitMonsterIndex];
				var killed = monster.takeDamage();
				if (killed) {
					// Remove monster
					map[Math.floor(monster.mapY)][Math.floor(monster.mapX)].removeMonster();
					monster.destroy();
					monsters.splice(hitMonsterIndex, 1);
					// Increase score
					player.score += 10;
					updateUI();
					// Check for level completion
					checkLevelCompletion();
				}
			}
			// Remove projectile
			projectile.destroy();
			projectiles.splice(i, 1);
		}
	}
}
function checkMonsterCollisions() {
	for (var i = 0; i < monsters.length; i++) {
		var monster = monsters[i];
		var dx = monster.mapX - player.x;
		var dy = monster.mapY - player.y;
		var dist = Math.sqrt(dx * dx + dy * dy);
		if (dist < 0.5) {
			// Player hit by monster
			player.health--;
			updateUI();
			// Visual feedback
			LK.effects.flashScreen(0xff0000, 300);
			// Play sound
			LK.getSound('hit').play();
			// Push player back slightly
			player.x -= dx * 0.3;
			player.y -= dy * 0.3;
			// Check game over
			if (player.health <= 0) {
				LK.showGameOver();
			}
			break;
		}
	}
}
function checkTreasureCollisions() {
	for (var i = treasures.length - 1; i >= 0; i--) {
		var treasure = treasures[i];
		var dx = treasure.mapX - player.x;
		var dy = treasure.mapY - player.y;
		var dist = Math.sqrt(dx * dx + dy * dy);
		if (dist < 0.5) {
			// Collect treasure
			player.score += treasure.value * 5;
			updateUI();
			// Play sound
			LK.getSound('collect').play();
			// Remove treasure
			map[Math.floor(treasure.mapY)][Math.floor(treasure.mapX)].removeTreasure();
			treasure.destroy();
			treasures.splice(i, 1);
			// Check level completion
			checkLevelCompletion();
		}
	}
}
function checkLevelCompletion() {
	// Level is complete if all monsters are defeated and all treasures collected
	if (monsters.length === 0 && treasures.length === 0) {
		// Level up
		player.level++;
		storage.level = player.level;
		// Restore some health
		player.health = Math.min(player.health + 2, 5);
		// Update UI
		updateUI();
		// Show level complete
		var levelCompleteText = new Text2('Level ' + (player.level - 1) + ' Complete!', {
			size: 80,
			fill: 0x55FF55
		});
		levelCompleteText.anchor.set(0.5, 0.5);
		levelCompleteText.x = 2048 / 2;
		levelCompleteText.y = 2732 / 2;
		game.addChild(levelCompleteText);
		// Generate new level after a delay
		LK.setTimeout(function () {
			levelCompleteText.destroy();
			generateMap();
		}, 2000);
	}
}
function updateMiniMap() {
	// Update player marker position on minimap
	playerMarker.x = miniMap.x + player.x * CELL_SIZE * MINI_MAP_SCALE;
	playerMarker.y = miniMap.y + player.y * CELL_SIZE * MINI_MAP_SCALE;
	// Draw player direction indicator
	var dirX = Math.cos(player.dir) * 15;
	var dirY = Math.sin(player.dir) * 15;
}
// Game update method
game.update = function () {
	var currentTime = Date.now();
	var deltaTime = currentTime - lastTime;
	lastTime = currentTime;
	// Update controls
	updateControls();
	// Update player
	updatePlayerMovement(deltaTime);
	// Update projectiles
	updateProjectiles(deltaTime);
	// Update raycast view
	rayCasting();
};
// Game initialization
setupGame();
// Event handlers
game.down = function (x, y, obj) {
	// Handle general screen press
};
game.up = function (x, y, obj) {
	// Handle general screen release
};
game.move = function (x, y, obj) {
	// Handle general screen move
};

===================================================================
--- original.js
+++ change.js
@@ -497,9 +497,9 @@
 				mapCheckY += stepY;
 				side = 1;
 			}
 			// Check if ray has hit a wall
-			if (mapCheckX < 0 || mapCheckX >= MAP_SIZE || mapCheckY < 0 || mapCheckY >= MAP_SIZE) {
+			if (mapCheckX < 0 || mapCheckX >= MAP_SIZE || mapCheckY < 0 || mapCheckY >= MAP_SIZE || !map[mapCheckY] || !map[mapCheckY][mapCheckX]) {
 				hit = true;
 				distToWall = maxDistance;
 			} else if (map[mapCheckY][mapCheckX].type === 1) {
 				hit = true;
@@ -623,9 +623,9 @@
 			mapCheckY += stepY;
 			side = 1;
 			distToWall = sideDistY - stepSizeY;
 		}
-		if (mapCheckX < 0 || mapCheckX >= MAP_SIZE || mapCheckY < 0 || mapCheckY >= MAP_SIZE) {
+		if (mapCheckX < 0 || mapCheckX >= MAP_SIZE || mapCheckY < 0 || mapCheckY >= MAP_SIZE || !map[mapCheckY] || !map[mapCheckY][mapCheckX]) {
 			break;
 		} else if (map[mapCheckY][mapCheckX].type === 1) {
 			hit = true;
 		}
@@ -674,9 +674,9 @@
 	var newY = player.y + dy;
 	var cellX = Math.floor(newX);
 	var cellY = Math.floor(newY);
 	// Check if we can move to the new position
-	if (cellX >= 0 && cellX < MAP_SIZE && cellY >= 0 && cellY < MAP_SIZE) {
+	if (cellX >= 0 && cellX < MAP_SIZE && cellY >= 0 && cellY < MAP_SIZE && map[cellY] && map[cellY][cellX]) {
 		if (map[cellY][cellX].type === 0) {
 			player.x = newX;
 			player.y = newY;
 			if (didMove && LK.ticks % 20 === 0) {
@@ -722,9 +722,9 @@
 		// Check if projectile hits a wall
 		var cellX = Math.floor(mapX);
 		var cellY = Math.floor(mapY);
 		var hitWall = false;
-		if (cellX < 0 || cellX >= MAP_SIZE || cellY < 0 || cellY >= MAP_SIZE) {
+		if (cellX < 0 || cellX >= MAP_SIZE || cellY < 0 || cellY >= MAP_SIZE || !map[cellY] || !map[cellY][cellX]) {
 			hitWall = true;
 		} else if (map[cellY][cellX].type === 1) {
 			hitWall = true;
 		}