/**** 
* Classes
****/ 
var Bird = Container.expand(function (birdType) {
	var self = Container.call(this);
	// Set bird type (1-6)
	self.birdType = birdType || Math.floor(Math.random() * 6) + 1;
	var assetName = 'bird' + self.birdType;
	var birdGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Different properties for each bird type
	var birdConfigs = {
		1: {
			speedMultiplier: 1.0,
			bounceChance: 0.8,
			points: 5,
			color: 0xffffff
		},
		2: {
			speedMultiplier: 0.7,
			bounceChance: 0.9,
			points: 5,
			color: 0x8B4513
		},
		// Eagle - slower, more points
		3: {
			speedMultiplier: 1.5,
			bounceChance: 0.6,
			points: 5,
			color: 0x654321
		},
		// Sparrow - fast, bonus points
		4: {
			speedMultiplier: 0.5,
			bounceChance: 0.95,
			points: 5,
			color: 0x2F4F4F
		},
		// Hawk - slow, high points
		5: {
			speedMultiplier: 2.0,
			bounceChance: 0.4,
			points: 5,
			color: 0xFF6347
		},
		// Robin - very fast, highest points
		6: {
			speedMultiplier: 1.2,
			bounceChance: 0.7,
			points: 5,
			color: 0x000000
		} // Crow - medium speed
	};
	var config = birdConfigs[self.birdType];
	birdGraphics.tint = config.color;
	self.speedX = (Math.random() * 4 + 2) * config.speedMultiplier * (Math.random() > 0.5 ? 1 : -1);
	self.speedY = (Math.random() * 2 - 1) * config.speedMultiplier;
	self.bounceChance = config.bounceChance;
	self.points = config.points;
	self.lastX = 0;
	self.lastY = 0;
	self.update = function () {
		self.lastX = self.x;
		self.lastY = self.y;
		self.x += self.speedX;
		self.y += self.speedY;
		// Bounce off top and bottom with chance based on bird type
		if (self.y < 100 || self.y > 2632) {
			if (Math.random() < self.bounceChance) {
				self.speedY *= -1;
			}
		}
	};
	return self;
});
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedX = 0;
	self.speedY = 0;
	self.lastX = 0;
	self.lastY = 0;
	self.update = function () {
		self.lastX = self.x;
		self.lastY = self.y;
		self.x += self.speedX;
		self.y += self.speedY;
	};
	return self;
});
var Feather = Container.expand(function (x, y, birdTint, featherType) {
	var self = Container.call(this);
	var featherGraphics = self.attachAsset('feather', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set feather type (1, 2, or 3)
	self.featherType = featherType || 1;
	// Set feather color similar to bird
	featherGraphics.tint = birdTint || 0xffffff;
	// Different properties for each feather type
	if (self.featherType === 1) {
		// Type 1: Normal feathers - medium speed, medium life
		self.x = x + (Math.random() - 0.5) * 40;
		self.y = y + (Math.random() - 0.5) * 40;
		self.speedX = (Math.random() - 0.5) * 8;
		self.speedY = Math.random() * -6 - 2;
		self.gravity = 0.2;
		self.rotation = Math.random() * Math.PI * 2;
		self.rotationSpeed = (Math.random() - 0.5) * 0.3;
		self.lifeTime = 0;
		self.maxLifeTime = 120; // 2 seconds at 60fps
		featherGraphics.scaleX = 1.0;
		featherGraphics.scaleY = 1.0;
	} else if (self.featherType === 2) {
		// Type 2: Small fast feathers - faster speed, shorter life
		self.x = x + (Math.random() - 0.5) * 60;
		self.y = y + (Math.random() - 0.5) * 60;
		self.speedX = (Math.random() - 0.5) * 12;
		self.speedY = Math.random() * -10 - 3;
		self.gravity = 0.15;
		self.rotation = Math.random() * Math.PI * 2;
		self.rotationSpeed = (Math.random() - 0.5) * 0.5;
		self.lifeTime = 0;
		self.maxLifeTime = 90; // 1.5 seconds at 60fps
		featherGraphics.scaleX = 0.7;
		featherGraphics.scaleY = 0.7;
	} else {
		// Type 3: Large slow feathers - slower speed, longer life
		self.x = x + (Math.random() - 0.5) * 20;
		self.y = y + (Math.random() - 0.5) * 20;
		self.speedX = (Math.random() - 0.5) * 4;
		self.speedY = Math.random() * -3 - 1;
		self.gravity = 0.25;
		self.rotation = Math.random() * Math.PI * 2;
		self.rotationSpeed = (Math.random() - 0.5) * 0.2;
		self.lifeTime = 0;
		self.maxLifeTime = 180; // 3 seconds at 60fps
		featherGraphics.scaleX = 1.4;
		featherGraphics.scaleY = 1.4;
	}
	self.update = function () {
		self.speedY += self.gravity;
		self.x += self.speedX;
		self.y += self.speedY;
		self.rotation += self.rotationSpeed;
		self.lifeTime++;
		// Fade out over time
		self.alpha = 1 - self.lifeTime / self.maxLifeTime;
	};
	return self;
});
var Gun = Container.expand(function () {
	var self = Container.call(this);
	var gunGraphics = self.attachAsset('gun', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.targetX = 0;
	self.targetY = 0;
	self.aimAt = function (x, y) {
		self.targetX = x;
		self.targetY = y;
		var dx = x - self.x;
		var dy = y - self.y;
		var angle = Math.atan2(dy, dx);
		gunGraphics.rotation = angle + Math.PI / 2;
	};
	return self;
});
var Raindrop = Container.expand(function (x, y) {
	var self = Container.call(this);
	var raindropGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Make raindrop smaller and blue-ish
	raindropGraphics.scaleX = 0.3;
	raindropGraphics.scaleY = 0.6;
	raindropGraphics.tint = 0x4169E1;
	raindropGraphics.alpha = 0.7;
	self.x = x;
	self.y = y;
	self.speedY = Math.random() * 3 + 4; // Falling speed
	self.speedX = (Math.random() - 0.5) * 2; // Slight horizontal drift
	self.lifeTime = 0;
	self.maxLifeTime = 300; // 5 seconds at 60fps
	self.update = function () {
		self.y += self.speedY;
		self.x += self.speedX;
		self.lifeTime++;
		// Fade out over time
		if (self.lifeTime > self.maxLifeTime * 0.8) {
			self.alpha = 0.7 * (1 - (self.lifeTime - self.maxLifeTime * 0.8) / (self.maxLifeTime * 0.2));
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
// Game variables
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
// Game variables
var birds = [];
var bullets = [];
var guns = [];
var feathers = [];
var lastBirdSpawn = 0;
var gameStarted = false;
var bulletsPerShot = 1;
var gunCount = 1;
var lastScoreCheckpoint = 0;
var health = 20;
var clouds = [];
var raindrops = [];
var currentWave = 1;
var maxWaves = 5;
var currentChapter = 1;
var maxChapters = 100;
var birdsKilledThisWave = 0;
var birdsNeededPerWave = [10, 15, 20, 25, 30]; // Birds needed to complete each wave
var waveStarted = false;
// Enemy types for each 5-chapter group
var enemyTypesByChapter = [[1],
// Chapters 1-5: bird 1
[2],
// Chapters 6-10: bird 2
[3],
// Chapters 11-15: bird 3
[4],
// Chapters 16-20: bird 4
[5],
// Chapters 21-25: bird 5
[6],
// Chapters 26-30: bird 6
[1, 2],
// Chapters 31-35: birds 1-2
[2, 3],
// Chapters 36-40: birds 2-3
[3, 4],
// Chapters 41-45: birds 3-4
[4, 5],
// Chapters 46-50: birds 4-5
[5, 6],
// Chapters 51-55: birds 5-6
[1, 3],
// Chapters 56-60: birds 1,3
[2, 4],
// Chapters 61-65: birds 2,4
[3, 5],
// Chapters 66-70: birds 3,5
[4, 6],
// Chapters 71-75: birds 4,6
[1, 2, 3],
// Chapters 76-80: birds 1-3
[3, 4, 5],
// Chapters 81-85: birds 3-5
[4, 5, 6],
// Chapters 86-90: birds 4-6
[1, 2, 3, 4, 5, 6] // Chapters 91-100: all birds
];
// Create sun
var sun = game.addChild(LK.getAsset('sun', {
	anchorX: 0.5,
	anchorY: 0.5
}));
sun.x = 1800;
sun.y = 300;
// Create clouds
for (var c = 0; c < 5; c++) {
	var cloud = game.addChild(LK.getAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.8 + Math.random() * 0.6,
		scaleY: 0.8 + Math.random() * 0.6
	}));
	cloud.x = Math.random() * 2048;
	cloud.y = Math.random() * 400 + 100;
	cloud.speedX = (Math.random() * 2 + 1) * (Math.random() > 0.5 ? 1 : -1);
	cloud.alpha = 0.7;
	clouds.push(cloud);
}
// Create mountains in background
var mountains = [];
for (var m = 0; m < 6; m++) {
	var mountainType = m % 3 + 1;
	var mountain = game.addChild(LK.getAsset('mountain' + mountainType, {
		anchorX: 0.5,
		anchorY: 1.0
	}));
	mountain.x = m * 350 + 200;
	mountain.y = 2400;
	mountain.alpha = 0.6;
	mountains.push(mountain);
}
// Create lake
var lake = game.addChild(LK.getAsset('lake', {
	anchorX: 0.5,
	anchorY: 1.0
}));
lake.x = 1024;
lake.y = 2500;
lake.alpha = 0.7;
// Create trees in foreground
var trees = [];
for (var t = 0; t < 8; t++) {
	// Create tree trunk
	var trunk = game.addChild(LK.getAsset('trunk', {
		anchorX: 0.5,
		anchorY: 1.0
	}));
	trunk.x = t * 250 + 150 + Math.random() * 100;
	trunk.y = 2550;
	// Create tree foliage
	var tree = game.addChild(LK.getAsset('tree', {
		anchorX: 0.5,
		anchorY: 1.0
	}));
	tree.x = trunk.x;
	tree.y = trunk.y - 35;
	tree.scaleX = 0.8 + Math.random() * 0.4;
	tree.scaleY = 0.8 + Math.random() * 0.4;
	trees.push({
		trunk: trunk,
		tree: tree
	});
}
// Create initial gun at bottom center
function createGun(index) {
	var gun = game.addChild(new Gun());
	var spacing = 2048 / (gunCount + 1);
	gun.x = spacing * (index + 1);
	gun.y = 2600;
	return gun;
}
// Initialize first gun
guns.push(createGun(0));
// Score display
var scoreTxt = new Text2('Score: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Health display
var healthTxt = new Text2('Health: 20', {
	size: 80,
	fill: 0xFF0000
});
healthTxt.anchor.set(0.5, 0);
healthTxt.y = 120;
LK.gui.top.addChild(healthTxt);
// Wave display
var waveTxt = new Text2('Chapter: 1/100 - Wave: 1/5 (0/10)', {
	size: 60,
	fill: 0x00FF00
});
waveTxt.anchor.set(0.5, 0);
waveTxt.y = 200;
LK.gui.top.addChild(waveTxt);
// Instructions
var instructionTxt = new Text2('Tap to aim and shoot flying birds!', {
	size: 60,
	fill: 0xFFFF00
});
instructionTxt.anchor.set(0.5, 0.5);
instructionTxt.x = 1024;
instructionTxt.y = 1366;
game.addChild(instructionTxt);
// Remove instructions after 3 seconds
LK.setTimeout(function () {
	if (instructionTxt.parent) {
		instructionTxt.destroy();
	}
}, 3000);
// Game controls
game.down = function (x, y, obj) {
	if (!gameStarted) {
		// Start background music when game begins
		LK.playMusic('background_music');
	}
	gameStarted = true;
	// Each gun fires multiple bullets
	for (var g = 0; g < guns.length; g++) {
		var gun = guns[g];
		// Aim gun
		gun.aimAt(x, y);
		// Fire multiple bullets per gun
		for (var b = 0; b < bulletsPerShot; b++) {
			var bullet = game.addChild(new Bullet());
			bullet.x = gun.x;
			bullet.y = gun.y - 60;
			bullet.lastX = bullet.x;
			bullet.lastY = bullet.y;
			// Calculate bullet direction with slight spread for multiple bullets
			var dx = x - gun.x;
			var dy = y - gun.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			var speed = 60;
			// Add spread for multiple bullets
			var spreadAngle = (b - (bulletsPerShot - 1) / 2) * 0.2;
			var angle = Math.atan2(dy, dx) + spreadAngle;
			bullet.speedX = Math.cos(angle) * speed;
			bullet.speedY = Math.sin(angle) * speed;
			bullets.push(bullet);
		}
	}
	// Play shoot sound
	LK.getSound('gun_shoot').play();
};
// Spawn birds periodically
function spawnBird() {
	// Get available enemy types for current chapter
	var chapterGroup = Math.min(Math.floor((currentChapter - 1) / 5), 19);
	var availableEnemies = enemyTypesByChapter[chapterGroup];
	// Create random bird type from available enemies for this chapter
	var randomIndex = Math.floor(Math.random() * availableEnemies.length);
	var randomBirdType = availableEnemies[randomIndex];
	var bird = game.addChild(new Bird(randomBirdType));
	// Random spawn from sides
	if (Math.random() > 0.5) {
		bird.x = -50;
		bird.speedX = Math.abs(bird.speedX);
	} else {
		bird.x = 2098;
		bird.speedX = -Math.abs(bird.speedX);
	}
	bird.y = Math.random() * 1500 + 200;
	bird.lastX = bird.x;
	bird.lastY = bird.y;
	birds.push(bird);
}
// Main game update
game.update = function () {
	if (!gameStarted) return;
	// Check wave completion
	if (birdsKilledThisWave >= birdsNeededPerWave[currentWave - 1]) {
		if (currentWave >= maxWaves) {
			// Chapter completed
			LK.getSound('chapter_complete').play();
			if (currentChapter >= maxChapters) {
				// All chapters completed - player wins!
				LK.showYouWin();
				return;
			} else {
				// Move to next chapter
				currentChapter++;
				currentWave = 1;
				birdsKilledThisWave = 0;
				waveStarted = false;
				// Reset health for new chapter
				health = 20;
				healthTxt.setText('Health: ' + health);
			}
		} else {
			// Move to next wave
			LK.getSound('wave_complete').play();
			currentWave++;
			birdsKilledThisWave = 0;
			waveStarted = false;
			// Wave upgrades
			if (currentWave === 2 && guns.length < 2) {
				gunCount++;
				guns.push(createGun(guns.length));
			}
			if (currentWave === 3 && bulletsPerShot < 2) {
				bulletsPerShot++;
			}
			if (currentWave === 4 && guns.length < 2) {
				gunCount++;
				if (guns.length < 2) guns.push(createGun(guns.length));
			}
			if (currentWave === 5 && bulletsPerShot < 3) {
				bulletsPerShot++;
			}
		}
	}
	// Update wave display
	waveTxt.setText('Chapter: ' + currentChapter + '/' + maxChapters + ' - Wave: ' + currentWave + '/' + maxWaves + ' (' + birdsKilledThisWave + '/' + birdsNeededPerWave[currentWave - 1] + ')');
	// Spawn birds based on current wave (higher waves spawn faster)
	var spawnDelay = Math.max(15, 40 - currentWave * 5);
	if (LK.ticks - lastBirdSpawn > spawnDelay) {
		spawnBird();
		lastBirdSpawn = LK.ticks;
		waveStarted = true;
	}
	// Update and check birds
	for (var i = birds.length - 1; i >= 0; i--) {
		var bird = birds[i];
		// Remove birds that flew off screen and decrease health
		if (bird.lastX >= -100 && bird.x < -100) {
			health--;
			healthTxt.setText('Health: ' + health);
			// Play health warning sound when health gets low
			if (health <= 5) {
				LK.getSound('health_warning').play();
			}
			bird.destroy();
			birds.splice(i, 1);
			if (health <= 0) {
				LK.showGameOver();
				return;
			}
			continue;
		}
		if (bird.lastX <= 2148 && bird.x > 2148) {
			health--;
			healthTxt.setText('Health: ' + health);
			// Play health warning sound when health gets low
			if (health <= 5) {
				LK.getSound('health_warning').play();
			}
			bird.destroy();
			birds.splice(i, 1);
			if (health <= 0) {
				LK.showGameOver();
				return;
			}
			continue;
		}
	}
	// Update clouds
	for (var c = 0; c < clouds.length; c++) {
		var cloud = clouds[c];
		cloud.x += cloud.speedX * 0.5;
		// Wrap clouds around screen
		if (cloud.x > 2148) {
			cloud.x = -100;
		} else if (cloud.x < -100) {
			cloud.x = 2148;
		}
	}
	// Update and cleanup raindrops
	for (var r = raindrops.length - 1; r >= 0; r--) {
		var raindrop = raindrops[r];
		// Remove raindrops that fall off screen or exceed lifetime
		if (raindrop.y > 2782 || raindrop.lifeTime >= raindrop.maxLifeTime || raindrop.alpha <= 0) {
			raindrop.destroy();
			raindrops.splice(r, 1);
		}
	}
	// Update and check bullets
	for (var j = bullets.length - 1; j >= 0; j--) {
		var bullet = bullets[j];
		// Remove bullets that go off screen
		if (bullet.x < -50 || bullet.x > 2098 || bullet.y < -50 || bullet.y > 2782) {
			bullet.destroy();
			bullets.splice(j, 1);
			continue;
		}
		// Check bullet-bird collisions
		for (var k = birds.length - 1; k >= 0; k--) {
			var bird = birds[k];
			if (bullet.intersects(bird)) {
				// Hit! Award 5 points for each hit
				LK.setScore(LK.getScore() + 5);
				scoreTxt.setText('Score: ' + LK.getScore());
				// Increment wave kill counter
				birdsKilledThisWave++;
				// Play enemy hit sound
				LK.getSound('enemy_hit').play();
				// Create feather explosion with 3 different types
				var featherCount = 10 + Math.floor(Math.random() * 5); // 10-15 feathers (half of previous amount)
				for (var f = 0; f < featherCount; f++) {
					// Randomly choose feather type (1, 2, or 3)
					var featherType = Math.floor(Math.random() * 3) + 1;
					var feather = game.addChild(new Feather(bird.x, bird.y, bird.children[0].tint, featherType));
					feathers.push(feather);
				}
				// Flash bird and remove
				LK.effects.flashObject(bird, 0xff0000, 200);
				// Remove bullet and bird
				bullet.destroy();
				bullets.splice(j, 1);
				bird.destroy();
				birds.splice(k, 1);
				break;
			}
		}
		// Update and cleanup feathers
		for (var f = feathers.length - 1; f >= 0; f--) {
			var feather = feathers[f];
			if (feather.lifeTime >= feather.maxLifeTime || feather.alpha <= 0) {
				feather.destroy();
				feathers.splice(f, 1);
			}
		}
	}
};