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

/**** 
* Classes
****/ 
var Artifact = Container.expand(function () {
	var self = Container.call(this);
	var artifactGraphics = self.attachAsset('artifact', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.collected = false;
	self.lifeTime = 0;
	self.collect = function () {
		if (!self.collected) {
			self.collected = true;
			LK.getSound('powerUp').play();
			LK.setScore(LK.getScore() + 100);
			// Heal hero
			hero.health = Math.min(hero.maxHealth, hero.health + 20);
			// Remove from artifacts array
			for (var i = artifacts.length - 1; i >= 0; i--) {
				if (artifacts[i] === self) {
					artifacts.splice(i, 1);
					break;
				}
			}
			tween(self, {
				scaleX: 0,
				scaleY: 0
			}, {
				duration: 200,
				onFinish: function onFinish() {
					self.destroy();
				}
			});
		}
	};
	self.update = function () {
		self.lifeTime++;
		self.rotation += 0.1;
		// Pulse effect
		var pulse = Math.sin(self.lifeTime * 0.2) * 0.2 + 1;
		self.scaleX = pulse;
		self.scaleY = pulse;
		// Despawn after 10 seconds
		if (self.lifeTime > 600) {
			for (var i = artifacts.length - 1; i >= 0; i--) {
				if (artifacts[i] === self) {
					artifacts.splice(i, 1);
					break;
				}
			}
			self.destroy();
		}
	};
	return self;
});
var Enemy = Container.expand(function (enemyType) {
	var self = Container.call(this);
	self.enemyType = enemyType || 'minotaur';
	self.health = 1;
	self.damage = 10;
	self.speed = 2;
	self.points = 10;
	var enemyGraphics;
	if (self.enemyType === 'minotaur') {
		enemyGraphics = self.attachAsset('minotaur', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		self.health = 2;
		self.speed = 1.5;
		self.points = 15;
	} else if (self.enemyType === 'harpy') {
		enemyGraphics = self.attachAsset('harpy', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		self.health = 1;
		self.speed = 3;
		self.points = 20;
	} else if (self.enemyType === 'cyclops') {
		enemyGraphics = self.attachAsset('cyclops', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		self.health = 4;
		self.speed = 1;
		self.damage = 20;
		self.points = 50;
	}
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xFFFFFF, 200);
		if (self.health <= 0) {
			self.die();
		}
	};
	self.die = function () {
		LK.getSound('enemyHit').play();
		LK.setScore(LK.getScore() + self.points);
		// Chance to drop artifact
		if (Math.random() < 0.15) {
			var artifact = new Artifact();
			artifact.x = self.x;
			artifact.y = self.y;
			artifacts.push(artifact);
			game.addChild(artifact);
		}
		// Remove from enemies array
		for (var i = enemies.length - 1; i >= 0; i--) {
			if (enemies[i] === self) {
				enemies.splice(i, 1);
				break;
			}
		}
		self.destroy();
	};
	self.update = function () {
		// Move towards hero
		var dx = hero.x - self.x;
		var dy = hero.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			self.x += dx / distance * self.speed;
			self.y += dy / distance * self.speed;
		}
	};
	return self;
});
var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroGraphics = self.attachAsset('hero', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.health = 100;
	self.maxHealth = 100;
	self.shootCooldown = 0;
	self.speed = 8;
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xFF0000, 300);
		if (self.health <= 0) {
			gameOver = true;
		}
	};
	self.shoot = function () {
		if (self.shootCooldown <= 0) {
			var bullet = new HeroBullet();
			bullet.x = self.x;
			bullet.y = self.y - 40;
			// Find nearest enemy for auto-aim
			var nearestEnemy = null;
			var nearestDistance = Infinity;
			for (var i = 0; i < enemies.length; i++) {
				var enemy = enemies[i];
				var dx = enemy.x - self.x;
				var dy = enemy.y - self.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				if (distance < nearestDistance) {
					nearestDistance = distance;
					nearestEnemy = enemy;
				}
			}
			// Set bullet direction towards nearest enemy
			if (nearestEnemy) {
				var dx = nearestEnemy.x - self.x;
				var dy = nearestEnemy.y - self.y;
				var distance = Math.sqrt(dx * dx + dy * dy);
				if (distance > 0) {
					bullet.directionX = dx / distance;
					bullet.directionY = dy / distance;
				}
			} else {
				// Default upward direction if no enemies
				bullet.directionX = 0;
				bullet.directionY = -1;
			}
			heroBullets.push(bullet);
			game.addChild(bullet);
			LK.getSound('shoot').play();
			self.shootCooldown = 10;
		}
	};
	self.update = function () {
		if (self.shootCooldown > 0) {
			self.shootCooldown--;
		}
	};
	return self;
});
var HeroBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('heroBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 4;
	self.damage = 1;
	self.directionX = 0;
	self.directionY = -1;
	self.update = function () {
		self.x += self.directionX * self.speed;
		self.y += self.directionY * self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1a1a2e
});

/**** 
* Game Code
****/ 
// Game variables
var hero;
var heroBullets = [];
var enemies = [];
var artifacts = [];
var enemySpawnTimer = 0;
var gameOver = false;
var dragActive = false;
var waveLevel = 1;
// UI
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0);
scoreTxt.x = 120;
scoreTxt.y = 50;
LK.gui.topLeft.addChild(scoreTxt);
var healthTxt = new Text2('Health: 100', {
	size: 60,
	fill: 0xFF4444
});
healthTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(healthTxt);
var waveTxt = new Text2('Wave: 1', {
	size: 50,
	fill: 0x44FF44
});
waveTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(waveTxt);
// Initialize hero
hero = new Hero();
hero.x = 1024;
hero.y = 2000;
game.addChild(hero);
// Spawn enemy function
function spawnEnemy() {
	var enemyTypes = ['minotaur', 'harpy', 'cyclops'];
	var type = enemyTypes[Math.floor(Math.random() * enemyTypes.length)];
	// Cyclops only spawn in later waves
	if (type === 'cyclops' && waveLevel < 3) {
		type = 'minotaur';
	}
	var enemy = new Enemy(type);
	// Spawn from random edge
	var side = Math.floor(Math.random() * 4);
	if (side === 0) {
		// Top
		enemy.x = Math.random() * 2048;
		enemy.y = -100;
	} else if (side === 1) {
		// Right
		enemy.x = 2148;
		enemy.y = Math.random() * 2732;
	} else if (side === 2) {
		// Bottom
		enemy.x = Math.random() * 2048;
		enemy.y = 2832;
	} else {
		// Left
		enemy.x = -100;
		enemy.y = Math.random() * 2732;
	}
	enemies.push(enemy);
	game.addChild(enemy);
}
// Touch controls
game.down = function (x, y, obj) {
	dragActive = true;
	hero.x = x;
	hero.y = y;
	hero.shoot();
};
game.move = function (x, y, obj) {
	if (dragActive) {
		hero.x = x;
		hero.y = y;
	}
};
game.up = function (x, y, obj) {
	dragActive = false;
};
// Main game loop
game.update = function () {
	if (gameOver) {
		LK.showGameOver();
		return;
	}
	// Update hero
	hero.update();
	// Keep hero in bounds
	hero.x = Math.max(40, Math.min(2008, hero.x));
	hero.y = Math.max(40, Math.min(2692, hero.y));
	// Auto-shoot
	if (LK.ticks % 15 === 0) {
		hero.shoot();
	}
	// Spawn enemies
	enemySpawnTimer++;
	var spawnRate = Math.max(30, 120 - waveLevel * 10);
	if (enemySpawnTimer >= spawnRate) {
		spawnEnemy();
		enemySpawnTimer = 0;
	}
	// Update bullets
	for (var i = heroBullets.length - 1; i >= 0; i--) {
		var bullet = heroBullets[i];
		bullet.update();
		// Remove bullets that are off-screen
		if (bullet.y < -50) {
			bullet.destroy();
			heroBullets.splice(i, 1);
			continue;
		}
		// Check bullet vs enemy collisions
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				enemy.takeDamage(bullet.damage);
				bullet.destroy();
				heroBullets.splice(i, 1);
				break;
			}
		}
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		enemy.update();
		// Check hero vs enemy collision
		if (enemy.intersects(hero)) {
			hero.takeDamage(enemy.damage);
			enemy.die();
		}
		// Remove enemies that are too far off-screen
		if (enemy.x < -200 || enemy.x > 2248 || enemy.y < -200 || enemy.y > 2932) {
			enemies.splice(i, 1);
			enemy.destroy();
		}
	}
	// Update artifacts
	for (var i = artifacts.length - 1; i >= 0; i--) {
		var artifact = artifacts[i];
		artifact.update();
		// Check hero vs artifact collision
		if (artifact.intersects(hero)) {
			artifact.collect();
		}
	}
	// Update wave level based on score
	var newWaveLevel = Math.floor(LK.getScore() / 500) + 1;
	if (newWaveLevel > waveLevel) {
		waveLevel = newWaveLevel;
		LK.effects.flashScreen(0x00FF00, 500);
	}
	// Update UI
	scoreTxt.setText('Score: ' + LK.getScore());
	healthTxt.setText('Health: ' + hero.health);
	waveTxt.setText('Wave: ' + waveLevel);
};
// Start background music
LK.playMusic('dungeonMusic');