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

/**** 
* Classes
****/ 
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('enemyBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.damage = 5;
	self.directionX = 0;
	self.directionY = 1;
	self.update = function () {
		self.x += self.directionX * self.speed;
		self.y += self.directionY * self.speed;
	};
	return self;
});
var EnemyTank = Container.expand(function () {
	var self = Container.call(this);
	var hull = self.attachAsset('enemyTank', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var turret = self.attachAsset('enemyTurret', {
		anchorX: 0.1,
		anchorY: 0.5
	});
	self.health = 60;
	self.maxHealth = 60;
	self.speed = 1.5 + (Math.random() * 2 - 1); // Random speed between 0.5 and 2.5
	self.lastFireTime = 0;
	self.fireRate = 5000;
	self.lastMoveTime = 0;
	self.moveInterval = 2000;
	self.targetX = self.x;
	self.targetY = self.y;
	// Create health bar
	self.healthBarBg = self.attachAsset('enemyTank', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 80,
		height: 8
	});
	self.healthBarBg.tint = 0xFF0000;
	self.healthBarBg.x = 0;
	self.healthBarBg.y = -50;
	self.healthBarFg = self.attachAsset('enemyTank', {
		anchorX: 0,
		anchorY: 0.5,
		width: 80,
		height: 6
	});
	self.healthBarFg.tint = 0x00FF00;
	self.healthBarFg.x = -40;
	self.healthBarFg.y = -50;
	self.update = function () {
		// Move towards target position
		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;
			hull.rotation = Math.atan2(dy, dx);
		}
		// Set new random target occasionally
		if (Date.now() - self.lastMoveTime > self.moveInterval) {
			self.lastMoveTime = Date.now();
			self.targetX = Math.random() * 1800 + 124;
			self.targetY = Math.random() * 2400 + 166;
		}
		// Aim at player
		if (playerTank) {
			var playerDx = playerTank.x - self.x;
			var playerDy = playerTank.y - self.y;
			var playerDistance = Math.sqrt(playerDx * playerDx + playerDy * playerDy);
			if (playerDistance < 800) {
				turret.rotation = Math.atan2(playerDy, playerDx);
				// Fire at player
				if (Date.now() - self.lastFireTime > self.fireRate) {
					self.lastFireTime = Date.now();
					var bullet = new EnemyBullet();
					// Position bullet at turret tip
					var turretLength = 70;
					bullet.x = self.x + Math.cos(turret.rotation) * turretLength;
					bullet.y = self.y + Math.sin(turret.rotation) * turretLength;
					// Set bullet direction towards player
					bullet.directionX = playerDx / playerDistance;
					bullet.directionY = playerDy / playerDistance;
					enemyBullets.push(bullet);
					game.addChild(bullet);
				}
			}
		}
		// Update health bar
		var healthPercent = self.health / self.maxHealth;
		self.healthBarFg.width = 80 * healthPercent;
		if (healthPercent > 0.6) {
			self.healthBarFg.tint = 0x00FF00; // Green
		} else if (healthPercent > 0.3) {
			self.healthBarFg.tint = 0xFFFF00; // Yellow
		} else {
			self.healthBarFg.tint = 0xFF0000; // Red
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xff0000, 200);
		if (self.health <= 0) {
			// Create explosion
			var explosion = game.addChild(LK.getAsset('explosion', {
				anchorX: 0.5,
				anchorY: 0.5
			}));
			explosion.x = self.x;
			explosion.y = self.y;
			tween(explosion, {
				scaleX: 2,
				scaleY: 2,
				alpha: 0
			}, {
				duration: 500,
				onFinish: function onFinish() {
					explosion.destroy();
				}
			});
			LK.getSound('explosion').play();
			LK.setScore(LK.getScore() + 100);
			scoreText.setText(LK.getScore());
			// Remove from parent and mark for removal
			self.destroy();
			return true; // Tank destroyed
		}
		return false;
	};
	return self;
});
var GroundMarker = Container.expand(function () {
	var self = Container.call(this);
	var arrowGraphics = self.attachAsset('arrow', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	// Rotate to point downward
	arrowGraphics.rotation = Math.PI;
	// Start with full opacity
	self.alpha = 1.0;
	// Animate the marker to fade out over 1 second
	tween(self, {
		alpha: 0
	}, {
		duration: 1000,
		onFinish: function onFinish() {
			self.destroy();
		}
	});
	return self;
});
var PlayerBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('playerBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.damage = 25;
	self.directionX = 0;
	self.directionY = -1;
	self.update = function () {
		self.x += self.directionX * self.speed;
		self.y += self.directionY * self.speed;
	};
	return self;
});
var PlayerTank = Container.expand(function () {
	var self = Container.call(this);
	var hull = self.attachAsset('playerTank', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var turret = self.attachAsset('playerTurret', {
		anchorX: 0.1,
		anchorY: 0.5
	});
	self.health = 100;
	self.maxHealth = 100;
	self.speed = 3;
	self.turretRotation = 0;
	self.lastFireTime = 0;
	self.fireRate = 5000; // milliseconds between shots
	self.moveTo = function (targetX, targetY) {
		var dx = targetX - self.x;
		var dy = 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;
			// Rotate hull to face movement direction
			hull.rotation = Math.atan2(dy, dx);
		}
	};
	self.aimTurret = function (targetX, targetY) {
		var dx = targetX - self.x;
		var dy = targetY - self.y;
		self.turretRotation = Math.atan2(dy, dx);
		turret.rotation = self.turretRotation;
	};
	self.canFire = function () {
		return Date.now() - self.lastFireTime > self.fireRate;
	};
	self.fire = function () {
		if (self.canFire()) {
			self.lastFireTime = Date.now();
			var bullet = new PlayerBullet();
			// Position bullet at turret tip
			var turretLength = 80;
			bullet.x = self.x + Math.cos(self.turretRotation) * turretLength;
			bullet.y = self.y + Math.sin(self.turretRotation) * turretLength;
			// Set bullet direction based on turret rotation
			bullet.directionX = Math.cos(self.turretRotation);
			bullet.directionY = Math.sin(self.turretRotation);
			playerBullets.push(bullet);
			game.addChild(bullet);
			LK.getSound('tankFire').play();
		}
	};
	self.takeDamage = function (damage) {
		self.health -= damage;
		LK.effects.flashObject(self, 0xff0000, 300);
		if (self.health <= 0) {
			self.destroy();
			LK.showGameOver();
		}
	};
	return self;
});
var ReloadIndicator = Container.expand(function () {
	var self = Container.call(this);
	// Create background circle
	self.bgCircle = self.attachAsset('enemyTank', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 100,
		height: 100
	});
	self.bgCircle.tint = 0x444444;
	// Create progress circle
	self.progressCircle = self.attachAsset('enemyTank', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: 92,
		height: 92
	});
	self.progressCircle.tint = 0x00FF00;
	// Create ready text
	self.readyText = new Text2('READY', {
		size: 40,
		fill: 0x00FF00
	});
	self.readyText.anchor.set(0.5, 0.5);
	self.addChild(self.readyText);
	self.updateProgress = function (progress, isReady) {
		if (isReady) {
			self.progressCircle.visible = false;
			self.readyText.visible = true;
			self.bgCircle.tint = 0x00AA00;
		} else {
			self.progressCircle.visible = true;
			self.readyText.visible = false;
			self.bgCircle.tint = 0x444444;
			// Scale progress circle based on reload progress
			var scale = progress;
			self.progressCircle.scaleX = scale;
			self.progressCircle.scaleY = scale;
			// Color transition from red to green
			var red = Math.floor(255 * (1 - progress));
			var green = Math.floor(255 * progress);
			self.progressCircle.tint = red << 16 | green << 8 | 0;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x3d5a27
});

/**** 
* Game Code
****/ 
var playerTank = null;
var enemyTanks = [];
var playerBullets = [];
var enemyBullets = [];
var gameStartTime = Date.now();
var lastEnemySpawn = 0;
var enemySpawnRate = 3000;
var maxEnemies = 4;
// UI Elements
var scoreText = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0, 0);
LK.gui.topRight.addChild(scoreText);
scoreText.x = -200;
scoreText.y = 20;
var healthText = new Text2('Health: 100', {
	size: 60,
	fill: 0xFF0000
});
healthText.anchor.set(0, 0);
LK.gui.bottomLeft.addChild(healthText);
healthText.x = 20;
healthText.y = -80;
// Reload indicator that follows cursor
var reloadIndicator = game.addChild(new ReloadIndicator());
var periscopeText = new Text2('Periscope: --', {
	size: 50,
	fill: 0x00FFFF
});
periscopeText.anchor.set(0, 0);
LK.gui.bottomLeft.addChild(periscopeText);
periscopeText.x = 20;
periscopeText.y = -140;
// Create player tank
playerTank = game.addChild(new PlayerTank());
playerTank.x = 1024;
playerTank.y = 2200;
// Touch controls
var targetX = playerTank.x;
var targetY = playerTank.y;
var aimX = playerTank.x;
var aimY = playerTank.y;
game.down = function (x, y, obj) {
	targetX = x;
	targetY = y;
	aimX = x;
	aimY = y;
	// Create ground marker at click position
	var marker = new GroundMarker();
	marker.x = x;
	marker.y = y;
	game.addChild(marker);
};
game.move = function (x, y, obj) {
	aimX = x;
	aimY = y;
};
game.up = function (x, y, obj) {
	if (playerTank) {
		playerTank.fire();
	}
};
game.update = function () {
	if (!playerTank) return;
	// Update player tank
	playerTank.moveTo(targetX, targetY);
	playerTank.aimTurret(aimX, aimY);
	// Update health display
	healthText.setText('Health: ' + playerTank.health);
	// Update reload indicator position and progress
	reloadIndicator.x = aimX - 80; // Position to the left of cursor
	reloadIndicator.y = aimY - 30; // Slightly above cursor
	// Keep indicator within screen bounds
	reloadIndicator.x = Math.max(50, Math.min(1998, reloadIndicator.x));
	reloadIndicator.y = Math.max(50, Math.min(2682, reloadIndicator.y));
	var timeSinceLastFire = Date.now() - playerTank.lastFireTime;
	var remainingCooldown = Math.max(0, playerTank.fireRate - timeSinceLastFire);
	var progress = 1 - remainingCooldown / playerTank.fireRate;
	var isReady = remainingCooldown <= 0;
	reloadIndicator.updateProgress(progress, isReady);
	// Update periscope display - calculate bullet travel time to target
	var distanceToTarget = Math.sqrt((aimX - playerTank.x) * (aimX - playerTank.x) + (aimY - playerTank.y) * (aimY - playerTank.y));
	var bulletSpeed = 8; // PlayerBullet speed
	var travelTime = distanceToTarget / bulletSpeed / 60; // Convert to seconds (60 FPS)
	periscopeText.setText('Periscope: ' + travelTime.toFixed(1) + 's');
	// Spawn enemies
	if (Date.now() - lastEnemySpawn > enemySpawnRate && enemyTanks.length < maxEnemies) {
		lastEnemySpawn = Date.now();
		var enemy = new EnemyTank();
		// Spawn at random edge
		var side = Math.floor(Math.random() * 4);
		switch (side) {
			case 0:
				// Top
				enemy.x = Math.random() * 1800 + 124;
				enemy.y = 100;
				break;
			case 1:
				// Right
				enemy.x = 1900;
				enemy.y = Math.random() * 2400 + 166;
				break;
			case 2:
				// Bottom
				enemy.x = Math.random() * 1800 + 124;
				enemy.y = 2600;
				break;
			case 3:
				// Left
				enemy.x = 148;
				enemy.y = Math.random() * 2400 + 166;
				break;
		}
		enemyTanks.push(enemy);
		game.addChild(enemy);
		// Increase difficulty over time
		var timeElapsed = Date.now() - gameStartTime;
		if (timeElapsed > 30000) {
			// After 30 seconds
			enemySpawnRate = Math.max(1500, enemySpawnRate - 50);
			maxEnemies = Math.min(8, maxEnemies + 1);
		}
	}
	// Update player bullets
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		var bullet = playerBullets[i];
		// Check if bullet is off screen
		if (bullet.x < 0 || bullet.x > 2048 || bullet.y < 0 || bullet.y > 2732) {
			bullet.destroy();
			playerBullets.splice(i, 1);
			continue;
		}
		// Check collision with enemies
		var hitEnemy = false;
		for (var j = enemyTanks.length - 1; j >= 0; j--) {
			var enemy = enemyTanks[j];
			if (bullet.intersects(enemy)) {
				if (enemy.takeDamage(bullet.damage)) {
					enemyTanks.splice(j, 1);
				}
				bullet.destroy();
				playerBullets.splice(i, 1);
				hitEnemy = true;
				break;
			}
		}
	}
	// Update enemy bullets
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		var bullet = enemyBullets[i];
		// Check if bullet is off screen
		if (bullet.x < 0 || bullet.x > 2048 || bullet.y < 0 || bullet.y > 2732) {
			bullet.destroy();
			enemyBullets.splice(i, 1);
			continue;
		}
		// Check collision with player
		if (bullet.intersects(playerTank)) {
			playerTank.takeDamage(bullet.damage);
			bullet.destroy();
			enemyBullets.splice(i, 1);
		}
	}
	// Remove destroyed enemy tanks
	for (var i = enemyTanks.length - 1; i >= 0; i--) {
		var enemy = enemyTanks[i];
		if (!enemy.parent) {
			enemyTanks.splice(i, 1);
		}
	}
};