/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.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 = 8;
	self.directionX = 0;
	self.directionY = 0;
	self.isDestroyed = false;
	self.update = function () {
		if (self.isDestroyed) return;
		self.x += self.directionX * self.speed;
		self.y += self.directionY * self.speed;
		// Remove if off screen
		if (self.x < -50 || self.x > 2098 || self.y < -50 || self.y > 2782) {
			self.isDestroyed = true;
			self.shouldRemove = true;
		}
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Add weapon visual
	var weapon = self.attachAsset('gun', {
		anchorX: 0.5,
		anchorY: 1,
		scaleX: 1,
		scaleY: 1,
		y: -25
	});
	self.aimAtPoint = function (targetX, targetY) {
		var dx = targetX - self.x;
		var dy = targetY - self.y;
		var angle = Math.atan2(dy, dx) - Math.PI / 2;
		weapon.rotation = angle;
	};
	return self;
});
var Zombie = Container.expand(function () {
	var self = Container.call(this);
	// Choose random zombie type
	var zombieTypes = ['zombie1', 'zombie2', 'zombie3', 'zombie4'];
	var zombieType = zombieTypes[Math.floor(Math.random() * zombieTypes.length)];
	var zombieGraphics = self.attachAsset(zombieType, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Varying speeds based on zombie type
	var speedVariations = [1.5, 1.2, 1.8, 1.1];
	var typeIndex = zombieTypes.indexOf(zombieType);
	self.speed = speedVariations[typeIndex] + (Math.random() * 0.4 - 0.2); // Add small random variation
	self.targetX = 1024;
	self.targetY = 1366;
	self.isDestroyed = false;
	self.update = function () {
		if (self.isDestroyed) return;
		// Move toward center
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 5) {
			self.x += dx / distance * self.speed;
			self.y += dy / distance * self.speed;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2F4F4F
});

/**** 
* Game Code
****/ 
// Create bright blue sky
var sky = game.addChild(LK.getAsset('sky', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0,
	tint: 0x87CEEB
}));
// Add sun
var sun = game.addChild(LK.getAsset('leaves', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1700,
	y: 250,
	scaleX: 1.5,
	scaleY: 1.5,
	tint: 0xFFD700
}));
// Add ground layer
var ground = game.addChild(LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 1366,
	tint: 0x8B4513
}));
// Add grass layer
var grass = game.addChild(LK.getAsset('grass', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 1166,
	tint: 0x228B22
}));
// Add forest trees
var treePositions = [150, 350, 550, 750, 950, 1150, 1350, 1550, 1750, 1950];
for (var t = 0; t < treePositions.length; t++) {
	var treeX = treePositions[t];
	var treeHeight = 180 + Math.random() * 80;
	var tree = game.addChild(LK.getAsset('tree', {
		anchorX: 0.5,
		anchorY: 1,
		x: treeX,
		y: 1366,
		scaleX: 1.2 + Math.random() * 0.8,
		scaleY: treeHeight / 200,
		tint: 0x8B4513
	}));
	// Add green leaves to trees
	var leaves = game.addChild(LK.getAsset('leaves', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: treeX,
		y: 1366 - treeHeight + 60,
		scaleX: 1.3 + Math.random() * 0.5,
		scaleY: 1.3 + Math.random() * 0.5,
		tint: 0x228B22
	}));
}
// Game variables
var zombies = [];
var bullets = [];
var player;
var scoreTxt;
var highScoreTxt;
var bulletCountTxt;
var bulletCount = 3; // Start with 3 bullets
var highScore = storage.highScore || 0;
var zombieSpawnRate = 120; // Spawn every 2 seconds initially
var zombieSpeed = 1.5;
var lastZombieSpawn = 0;
var lastShot = 0;
var shootCooldown = 15; // 15 frames between shots (4 shots per second)
var lastSpeedIncrease = 0;
var speedIncreaseInterval = 60; // 1 second at 60fps
// Create player at center
player = game.addChild(new Player());
player.x = 1024;
player.y = 1366;
// Create score display
scoreTxt = new Text2('0', {
	size: 100,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.y = 100;
// Create high score display
highScoreTxt = new Text2('Best Point: ' + highScore, {
	size: 60,
	fill: 0xFFD700
});
highScoreTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(highScoreTxt);
highScoreTxt.x = -120;
highScoreTxt.y = 50;
// Create bullet count display
bulletCountTxt = new Text2('Bullets: ' + bulletCount, {
	size: 60,
	fill: 0xFFFFFF
});
bulletCountTxt.anchor.set(0, 0);
LK.gui.topLeft.addChild(bulletCountTxt);
bulletCountTxt.x = 120;
bulletCountTxt.y = 50;
// Shooting function
function shootBullet(targetX, targetY) {
	if (LK.ticks - lastShot < shootCooldown) return;
	if (bulletCount <= 0) return; // Can't shoot if no bullets left
	var bullet = new Bullet();
	bullet.x = player.x;
	bullet.y = player.y;
	// Calculate direction
	var dx = targetX - player.x;
	var dy = targetY - player.y;
	var distance = Math.sqrt(dx * dx + dy * dy);
	bullet.directionX = dx / distance;
	bullet.directionY = dy / distance;
	bullets.push(bullet);
	game.addChild(bullet);
	LK.getSound('gunShot').play();
	lastShot = LK.ticks;
	bulletCount--; // Decrease bullet count
	bulletCountTxt.setText('Bullets: ' + bulletCount); // Update display
}
// Touch/click controls
game.down = function (x, y, obj) {
	player.aimAtPoint(x, y);
	shootBullet(x, y);
};
function spawnZombie() {
	var zombie = new Zombie();
	// Spawn only from bottom of the map
	zombie.x = Math.random() * 2048;
	zombie.y = 2772;
	zombie.speed = zombieSpeed;
	zombies.push(zombie);
	game.addChild(zombie);
	LK.getSound('zombieSpawn').play();
}
function checkBulletCollisions() {
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		if (bullet.isDestroyed) continue;
		for (var j = 0; j < zombies.length; j++) {
			var zombie = zombies[j];
			if (zombie.isDestroyed) continue;
			var dx = bullet.x - zombie.x;
			var dy = bullet.y - zombie.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < 75) {
				// Hit zombie
				bullet.isDestroyed = true;
				bullet.shouldRemove = true;
				zombie.isDestroyed = true;
				LK.getSound('zombieHit').play();
				// Add random coin reward between 52-56
				var coinReward = Math.floor(Math.random() * 5) + 52; // Random between 52-56
				LK.setScore(LK.getScore() + coinReward);
				scoreTxt.setText(LK.getScore());
				// Add 1 bullet reward
				bulletCount += 1;
				bulletCountTxt.setText('Bullets: ' + bulletCount);
				// Update high score if current score is higher
				if (LK.getScore() > highScore) {
					highScore = LK.getScore();
					storage.highScore = highScore;
					highScoreTxt.setText('Best Point: ' + highScore);
				}
				// Create explosion effect
				var explosion = game.addChild(LK.getAsset('explosion', {
					anchorX: 0.5,
					anchorY: 0.5,
					x: zombie.x,
					y: zombie.y,
					scaleX: 0.1,
					scaleY: 0.1
				}));
				// Animate explosion
				tween(explosion, {
					scaleX: 2,
					scaleY: 2,
					alpha: 0
				}, {
					duration: 300,
					easing: tween.easeOut,
					onFinish: function onFinish() {
						explosion.destroy();
					}
				});
				// Mark zombie for removal
				for (var k = 0; k < zombies.length; k++) {
					if (zombies[k] === zombie) {
						zombies[k].shouldRemove = true;
						break;
					}
				}
				break;
			}
		}
	}
}
function checkGameOver() {
	for (var i = 0; i < zombies.length; i++) {
		var zombie = zombies[i];
		if (zombie.isDestroyed) continue;
		var dx = zombie.x - player.x;
		var dy = zombie.y - player.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < 50) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
	}
}
game.update = function () {
	// Increase zombie speed every 1 second and spawn more zombies
	if (LK.ticks - lastSpeedIncrease > speedIncreaseInterval) {
		zombieSpeed += 0.1; // Increase speed by 0.1
		// Decrease spawn rate to spawn zombies more frequently (lower value = more frequent spawning)
		if (zombieSpawnRate > 30) {
			// Don't go below 30 frames (0.5 seconds)
			zombieSpawnRate -= 5; // Spawn zombies 5 frames sooner each time
		}
		// Update existing zombies' speed
		for (var i = 0; i < zombies.length; i++) {
			if (!zombies[i].isDestroyed) {
				zombies[i].speed = zombieSpeed + (Math.random() * 0.4 - 0.2);
			}
		}
		lastSpeedIncrease = LK.ticks;
	}
	// Spawn zombies
	if (LK.ticks - lastZombieSpawn > zombieSpawnRate) {
		spawnZombie();
		lastZombieSpawn = LK.ticks;
	}
	// Clean up destroyed bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		if (bullet.shouldRemove) {
			bullet.destroy();
			bullets.splice(i, 1);
		}
	}
	// Clean up destroyed zombies
	for (var i = zombies.length - 1; i >= 0; i--) {
		var zombie = zombies[i];
		if (zombie.shouldRemove) {
			zombie.destroy();
			zombies.splice(i, 1);
		}
	}
	// Check bullet collisions
	checkBulletCollisions();
	// Check for game over
	checkGameOver();
};