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

/**** 
* Classes
****/ 
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.damage = 25;
	self.directionX = 0;
	self.directionY = 0;
	self.update = function () {
		self.x += self.speed * self.directionX;
		self.y += self.speed * self.directionY;
	};
	return self;
});
var HealthPack = Container.expand(function () {
	var self = Container.call(this);
	var healthGraphics = self.attachAsset('healthPack', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.healAmount = 30;
	self.update = function () {
		// Simple floating animation
		self.y += Math.sin(LK.ticks * 0.1) * 0.5;
		// Check pickup
		if (self.intersects(player)) {
			player.heal(self.healAmount);
			LK.getSound('pickup').play();
			self.collected = true;
		}
	};
	return self;
});
var HowToPlay = Container.expand(function () {
	var self = Container.call(this);
	// Create background overlay
	var background = LK.getAsset('ground', {
		anchorX: 0,
		anchorY: 0,
		x: 0,
		y: 0,
		width: 2048,
		height: 2732,
		alpha: 0.9
	});
	self.addChild(background);
	// Title
	var titleText = new Text2('HOW TO PLAY', {
		size: 120,
		fill: 0xFFFFFF
	});
	titleText.anchor.set(0.5, 0);
	titleText.x = 1024;
	titleText.y = 200;
	self.addChild(titleText);
	// Controls section
	var controlsTitle = new Text2('CONTROLS', {
		size: 80,
		fill: 0xFFFF00
	});
	controlsTitle.anchor.set(0.5, 0);
	controlsTitle.x = 1024;
	controlsTitle.y = 400;
	self.addChild(controlsTitle);
	// PC controls
	var pcText = new Text2('PC CONTROLS:', {
		size: 60,
		fill: 0x00FF00
	});
	pcText.anchor.set(0, 0);
	pcText.x = 200;
	pcText.y = 520;
	self.addChild(pcText);
	var pcControls = new Text2('• W/A/S/D - Move Up/Left/Down/Right\n• Mouse - Aim direction\n• Left Click - Shoot\n• Navigate the maze to find the exit', {
		size: 45,
		fill: 0xFFFFFF
	});
	pcControls.anchor.set(0, 0);
	pcControls.x = 200;
	pcControls.y = 600;
	self.addChild(pcControls);
	// Gameplay section
	var gameplayTitle = new Text2('GAMEPLAY', {
		size: 80,
		fill: 0xFFFF00
	});
	gameplayTitle.anchor.set(0.5, 0);
	gameplayTitle.x = 1024;
	gameplayTitle.y = 950;
	self.addChild(gameplayTitle);
	var gameplayText = new Text2('• Navigate through a dark maze facility\n• Kill zombies to earn points (50 points each)\n• Collect health packs (red circles)\n• Collect weapon upgrades (blue boxes)\n• Score increases ONLY by killing zombies', {
		size: 45,
		fill: 0xFFFFFF
	});
	gameplayText.anchor.set(0, 0);
	gameplayText.x = 200;
	gameplayText.y = 1050;
	self.addChild(gameplayText);
	// Objectives
	var objectiveTitle = new Text2('OBJECTIVES', {
		size: 80,
		fill: 0xFFFF00
	});
	objectiveTitle.anchor.set(0.5, 0);
	objectiveTitle.x = 1024;
	objectiveTitle.y = 1400;
	self.addChild(objectiveTitle);
	var objectiveText = new Text2('• Kill as many zombies as possible\n• Escape through the green exit to end game\n• Survive and maximize your kill count\n• Use maze walls for tactical advantage', {
		size: 45,
		fill: 0xFFFFFF
	});
	objectiveText.anchor.set(0, 0);
	objectiveText.x = 200;
	objectiveText.y = 1500;
	self.addChild(objectiveText);
	// Close button
	var closeButton = LK.getAsset('player', {
		width: 200,
		height: 100,
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.8
	});
	closeButton.x = 1024;
	closeButton.y = 1900;
	self.addChild(closeButton);
	var closeText = new Text2('TAP TO START', {
		size: 60,
		fill: 0x000000
	});
	closeText.anchor.set(0.5, 0.5);
	closeText.x = 1024;
	closeText.y = 1900;
	self.addChild(closeText);
	closeButton.down = function () {
		self.visible = false;
		gameStarted = true;
	};
	background.down = function () {
		self.visible = false;
		gameStarted = true;
	};
	return self;
});
var MazeExit = Container.expand(function () {
	var self = Container.call(this);
	var exitGraphics = self.attachAsset('exit', {
		anchorX: 0,
		anchorY: 0
	});
	self.update = function () {
		// Pulsing effect for exit
		exitGraphics.alpha = 0.7 + Math.sin(LK.ticks * 0.1) * 0.3;
		// Check if player reached exit
		if (self.intersects(player)) {
			LK.showYouWin();
		}
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Add bird head
	var birdHead = self.attachAsset('playerHead', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	birdHead.x = 0;
	birdHead.y = -8; // Position head above body
	// Add bird beak
	var birdBeak = self.attachAsset('playerBeak', {
		anchorX: 0,
		anchorY: 0.5
	});
	birdBeak.x = 15; // Position to right of head
	birdBeak.y = -8; // Same height as head
	self.health = 100;
	self.maxHealth = 100;
	self.speed = 4;
	self.weapon = 1;
	self.maxWeapon = 3;
	self.takeDamage = function (damage) {
		self.health -= damage;
		if (self.health <= 0) {
			self.health = 0;
			gameOver = true;
		}
		// Flash red when taking damage
		LK.effects.flashObject(self, 0xFF0000, 500);
	};
	self.heal = function (amount) {
		self.health = Math.min(self.maxHealth, self.health + amount);
	};
	self.upgradeWeapon = function () {
		if (self.weapon < self.maxWeapon) {
			self.weapon++;
		}
	};
	self.checkWallCollision = function (newX, newY) {
		// Check collision with maze walls
		for (var i = 0; i < walls.length; i++) {
			var wall = walls[i];
			if (newX < wall.x + 80 && newX + 40 > wall.x && newY < wall.y + 80 && newY + 40 > wall.y) {
				return true;
			}
		}
		return false;
	};
	self.update = function () {
		// No gravity or ground collision in top-down view
	};
	return self;
});
var Wall = Container.expand(function () {
	var self = Container.call(this);
	var wallGraphics = self.attachAsset('wall', {
		anchorX: 0,
		anchorY: 0
	});
	return self;
});
var WeaponPickup = Container.expand(function () {
	var self = Container.call(this);
	var weaponGraphics = self.attachAsset('weaponPickup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Simple floating animation
		self.y += Math.sin(LK.ticks * 0.1) * 0.5;
		// Check pickup
		if (self.intersects(player)) {
			player.upgradeWeapon();
			LK.getSound('pickup').play();
			self.collected = true;
		}
	};
	return self;
});
var Zombie = Container.expand(function () {
	var self = Container.call(this);
	var zombieGraphics = self.attachAsset('zombie', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 50;
	self.speed = 1.5;
	self.damage = 20;
	self.lastAttackTime = 0;
	self.moveTimer = 0;
	self.targetX = 0;
	self.targetY = 0;
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xFFFFFF, 200);
		if (self.health <= 0) {
			return true; // Zombie is dead
		}
		return false;
	};
	self.checkWallCollision = function (newX, newY) {
		// Check collision with maze walls
		for (var i = 0; i < walls.length; i++) {
			var wall = walls[i];
			if (newX < wall.x + 80 && newX + 35 > wall.x && newY < wall.y + 80 && newY + 35 > wall.y) {
				return true;
			}
		}
		return false;
	};
	self.update = function () {
		// Simple AI: move towards player if path is clear
		var deltaX = player.x - self.x;
		var deltaY = player.y - self.y;
		var distance = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
		if (distance > 0) {
			var moveX = deltaX / distance * self.speed;
			var moveY = deltaY / distance * self.speed;
			var newX = self.x + moveX;
			var newY = self.y + moveY;
			// Only move if not hitting walls
			if (!self.checkWallCollision(newX, self.y)) {
				self.x = newX;
			}
			if (!self.checkWallCollision(self.x, newY)) {
				self.y = newY;
			}
		}
		// Check collision with player
		if (self.intersects(player)) {
			var currentTime = LK.ticks;
			if (currentTime - self.lastAttackTime > 60) {
				// Attack every second
				player.takeDamage(self.damage);
				self.lastAttackTime = currentTime;
			}
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1a1a1a
});

/**** 
* Game Code
****/ 
// Game variables
var player;
var zombies = [];
var bullets = [];
var healthPacks = [];
var weaponPickups = [];
var walls = [];
var mazeExit;
var gameOver = false;
var gameStarted = false;
var score = 0;
var zombieSpawnTimer = 0;
var pickupSpawnTimer = 0;
var howToPlayScreen;
// Movement controls
var moveUp = false;
var moveDown = false;
var moveLeft = false;
var moveRight = false;
var shooting = false;
var shootTimer = 0;
var shootTargetX = 0;
var shootTargetY = 0;
// Create maze layout (simplified maze pattern)
var mazePattern = [[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1], [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1], [1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1], [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1], [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1], [1, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1], [1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1], [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1], [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1], [1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1], [1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1], [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]];
// Build maze walls
for (var row = 0; row < mazePattern.length; row++) {
	for (var col = 0; col < mazePattern[row].length; col++) {
		var cellX = col * 80;
		var cellY = row * 80;
		if (mazePattern[row][col] === 1) {
			// Wall
			var wall = game.addChild(new Wall());
			wall.x = cellX;
			wall.y = cellY;
			walls.push(wall);
		} else if (mazePattern[row][col] === 2) {
			// Exit
			mazeExit = game.addChild(new MazeExit());
			mazeExit.x = cellX;
			mazeExit.y = cellY;
		}
	}
}
// Create player
player = game.addChild(new Player());
player.x = 120; // Start position in maze
player.y = 120;
// UI Elements positioned for PC
var scoreText = new Text2('Kills: 0', {
	size: 50,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0, 0);
scoreText.x = 20;
scoreText.y = 120;
LK.gui.topLeft.addChild(scoreText);
var healthText = new Text2('Health: 100', {
	size: 50,
	fill: 0xFF0000
});
healthText.anchor.set(0, 0);
healthText.x = 20;
healthText.y = 180;
LK.gui.topLeft.addChild(healthText);
var weaponText = new Text2('Weapon: 1', {
	size: 50,
	fill: 0x00BFFF
});
weaponText.anchor.set(0, 0);
weaponText.x = 20;
weaponText.y = 240;
LK.gui.topLeft.addChild(weaponText);
var objectiveText = new Text2('Kill Zombies! Escape to End Game!', {
	size: 60,
	fill: 0xFF4444
});
objectiveText.anchor.set(0.5, 0);
objectiveText.x = 1024;
objectiveText.y = 30;
LK.gui.top.addChild(objectiveText);
var controlHint = new Text2('WASD to move, Mouse to aim & shoot', {
	size: 40,
	fill: 0xCCCCCC
});
controlHint.anchor.set(1, 0);
controlHint.x = 2028;
controlHint.y = 120;
LK.gui.topRight.addChild(controlHint);
// Keyboard event listeners for PC controls
LK.on('keydown', function (key) {
	if (key === 'w' || key === 'W') moveUp = true;
	if (key === 's' || key === 'S') moveDown = true;
	if (key === 'a' || key === 'A') moveLeft = true;
	if (key === 'd' || key === 'D') moveRight = true;
});
LK.on('keyup', function (key) {
	if (key === 'w' || key === 'W') moveUp = false;
	if (key === 's' || key === 'S') moveDown = false;
	if (key === 'a' || key === 'A') moveLeft = false;
	if (key === 'd' || key === 'D') moveRight = false;
});
// Create How to Play screen
howToPlayScreen = game.addChild(new HowToPlay());
howToPlayScreen.visible = true;
// Game event handlers for mouse shooting
game.down = function (x, y, obj) {
	// Convert screen coordinates to game coordinates
	var gamePos = game.toLocal({
		x: x,
		y: y
	});
	shootTargetX = gamePos.x;
	shootTargetY = gamePos.y;
	shooting = true;
};
game.up = function (x, y, obj) {
	shooting = false;
};
// Track mouse position for aiming
game.move = function (x, y, obj) {
	var gamePos = game.toLocal({
		x: x,
		y: y
	});
	shootTargetX = gamePos.x;
	shootTargetY = gamePos.y;
};
// Spawn functions
function spawnZombie() {
	var zombie = new Zombie();
	// Find a random open space in the maze
	var spawnAttempts = 0;
	do {
		zombie.x = Math.random() * 1920 + 80;
		zombie.y = Math.random() * 1520 + 80;
		spawnAttempts++;
	} while (zombie.checkWallCollision(zombie.x, zombie.y) && spawnAttempts < 50);
	zombies.push(zombie);
	game.addChild(zombie);
}
function spawnHealthPack() {
	var healthPack = new HealthPack();
	// Find a random open space in the maze
	var spawnAttempts = 0;
	do {
		healthPack.x = Math.random() * 1920 + 80;
		healthPack.y = Math.random() * 1520 + 80;
		spawnAttempts++;
	} while (spawnAttempts < 50 && isPositionBlocked(healthPack.x, healthPack.y));
	healthPacks.push(healthPack);
	game.addChild(healthPack);
}
function spawnWeaponPickup() {
	var weaponPickup = new WeaponPickup();
	// Find a random open space in the maze
	var spawnAttempts = 0;
	do {
		weaponPickup.x = Math.random() * 1920 + 80;
		weaponPickup.y = Math.random() * 1520 + 80;
		spawnAttempts++;
	} while (spawnAttempts < 50 && isPositionBlocked(weaponPickup.x, weaponPickup.y));
	weaponPickups.push(weaponPickup);
	game.addChild(weaponPickup);
}
function isPositionBlocked(x, y) {
	// Check if position overlaps with walls
	for (var i = 0; i < walls.length; i++) {
		var wall = walls[i];
		if (x < wall.x + 80 && x + 25 > wall.x && y < wall.y + 80 && y + 25 > wall.y) {
			return true;
		}
	}
	return false;
}
function shootBullet() {
	var bullet = new Bullet();
	bullet.x = player.x;
	bullet.y = player.y;
	bullet.damage = 25 * player.weapon; // More damage with better weapons
	// Calculate direction toward shoot target
	var deltaX = shootTargetX - player.x;
	var deltaY = shootTargetY - player.y;
	var distance = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
	if (distance > 0) {
		bullet.directionX = deltaX / distance;
		bullet.directionY = deltaY / distance;
	} else {
		bullet.directionX = 1; // Default right
		bullet.directionY = 0;
	}
	bullets.push(bullet);
	game.addChild(bullet);
	LK.getSound('shoot').play();
}
// Main game update
game.update = function () {
	if (!gameStarted) {
		return; // Don't start game until player dismisses how to play screen
	}
	if (gameOver) {
		LK.showGameOver();
		return;
	}
	// Score is only increased by killing zombies
	LK.setScore(score);
	// Handle player movement with wall collision
	var newX = player.x;
	var newY = player.y;
	if (moveLeft) {
		newX = player.x - player.speed;
	}
	if (moveRight) {
		newX = player.x + player.speed;
	}
	if (moveUp) {
		newY = player.y - player.speed;
	}
	if (moveDown) {
		newY = player.y + player.speed;
	}
	// Check wall collisions and move if valid
	if (!player.checkWallCollision(newX, player.y)) {
		player.x = newX;
	}
	if (!player.checkWallCollision(player.x, newY)) {
		player.y = newY;
	}
	// Handle shooting
	if (shooting && LK.ticks - shootTimer > 30 / player.weapon) {
		// Faster shooting with better weapons
		shootBullet();
		shootTimer = LK.ticks;
	}
	// Spawn zombies
	zombieSpawnTimer++;
	var spawnRate = Math.max(180, 120); // Spawn every 3-2 seconds
	if (zombieSpawnTimer >= spawnRate) {
		spawnZombie();
		zombieSpawnTimer = 0;
	}
	// Spawn pickups occasionally
	pickupSpawnTimer++;
	if (pickupSpawnTimer >= 900) {
		// Every 15 seconds
		if (Math.random() < 0.7) {
			spawnHealthPack();
		} else {
			spawnWeaponPickup();
		}
		pickupSpawnTimer = 0;
	}
	// Update bullets and check collisions
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		// Check if bullet is off screen or hits walls
		if (bullet.x < 0 || bullet.x > 2000 || bullet.y < 0 || bullet.y > 1600) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check wall collision
		var bulletHitWall = false;
		for (var w = 0; w < walls.length; w++) {
			var wall = walls[w];
			if (bullet.x < wall.x + 80 && bullet.x + 12 > wall.x && bullet.y < wall.y + 80 && bullet.y + 12 > wall.y) {
				bulletHitWall = true;
				break;
			}
		}
		if (bulletHitWall) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check bullet-zombie collisions
		var hit = false;
		for (var j = zombies.length - 1; j >= 0; j--) {
			var zombie = zombies[j];
			if (bullet.intersects(zombie)) {
				if (zombie.takeDamage(bullet.damage)) {
					// Zombie died
					score += 50;
					LK.getSound('zombieHit').play();
					zombie.destroy();
					zombies.splice(j, 1);
				}
				bullet.destroy();
				bullets.splice(i, 1);
				hit = true;
				break;
			}
		}
	}
	// Update health packs
	for (var i = healthPacks.length - 1; i >= 0; i--) {
		var healthPack = healthPacks[i];
		if (healthPack.collected) {
			healthPack.destroy();
			healthPacks.splice(i, 1);
		}
	}
	// Update weapon pickups
	for (var i = weaponPickups.length - 1; i >= 0; i--) {
		var weaponPickup = weaponPickups[i];
		if (weaponPickup.collected) {
			weaponPickup.destroy();
			weaponPickups.splice(i, 1);
		}
	}
	// Update UI
	scoreText.setText('Kills: ' + score / 50);
	healthText.setText('Health: ' + player.health);
	weaponText.setText('Weapon: ' + player.weapon);
	// Exit reached condition handled by MazeExit class
};