/**** 
* Classes
****/ 
// Bullet class
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		width: 15,
		height: 15,
		color: 0xffffff,
		shape: 'box'
	});
	self.speed = -30;
	// Move bullet
	self.move = function () {
		self.x += self.speedX;
		self.y += self.speedY;
	};
});
// EnemyBot class
var EnemyBot = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedX = 0;
	self.speedY = 0;
	// Update enemy bot position
	self.update = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		if (self.x < 0) {
			self.x = 2048;
		} else if (self.x > 2048) {
			self.x = 0;
		}
		if (self.y < 0) {
			self.y = 0;
			self.speedY = 0;
		} else if (self.y > 2752 - self.height) {
			self.y = 2752 - self.height;
			self.speedY = 0;
		}
		// Rotate the enemy image smoothly, the right side sets the direction of the enemy
		var targetAngle = Math.atan2(-self.speedY, -self.speedX);
		var diff = targetAngle - enemyGraphics.rotation;
		if (diff > Math.PI) {
			diff -= 2 * Math.PI;
		} else if (diff < -Math.PI) {
			diff += 2 * Math.PI;
		}
		if (diff > 0) {
			enemyGraphics.rotation += Math.min(diff, Math.PI / 180);
		} else {
			enemyGraphics.rotation += Math.max(diff, -Math.PI / 180);
		}
	};
});
// Plane1 class
var Plane1 = Container.expand(function () {
	var self = Container.call(this);
	var planeGraphics = self.attachAsset('plane', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedX = 7;
	self.speedY = 0;
	// Update plane position
	self.update = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		// Check if the plane has crossed the screen boundary
		if (self.x < 0) {
			self.x = 2048;
		} else if (self.x > 2048) {
			self.x = 0;
		}
		// Prevent the plane from crossing the floor and ceiling
		if (self.y < 0) {
			self.y = 0;
			self.speedY = 0;
		} else if (self.y > 2752 - self.height) {
			self.y = 2752 - self.height;
			self.speedY = 0;
		}
	};
	// Plane shoots a bullet
	self.shoot = function () {
		var bullet = new Bullet();
		// Set bullet position to the front of the plane
		var planeFrontX = self.x + self.width / 2 * Math.cos(self.rotation);
		var planeFrontY = self.y + self.width / 2 * Math.sin(self.rotation);
		bullet.x = planeFrontX;
		bullet.y = planeFrontY;
		// Set bullet speed to twice the plane's speed in the direction of the plane
		bullet.speedX = 2 * self.speedX;
		bullet.speedY = 2 * self.speedY;
		bullets.push(bullet);
		game.addChild(bullet);
	};
});

/**** 
* Initialize Game
****/ 
// Assets are automatically created based on usage in the code.
var game = new LK.Game({
	backgroundColor: 0xffffff // Init game with white background
});

/**** 
* Game Code
****/ 
// Add health_bar to the top of the game
var healthBar = LK.gui.top.attachAsset('health_bar', {
	anchorX: 0.5,
	anchorY: 0
});
healthBar.x = 2048 / 8;
healthBar.y = -20;
// Add first heart to the health_bar
var heart1 = healthBar.attachAsset('heart', {
	anchorX: 0.5,
	anchorY: 0.5
});
heart1.x = 395;
heart1.y = 90;
// Ensure the heart is always in the foreground
if (healthBar.children.length > 0) {
	healthBar.setChildIndex(heart1, healthBar.children.length - 1);
} else {
	healthBar.addChild(heart1);
}
// Add second heart to the health_bar
var heart2 = healthBar.attachAsset('heart', {
	anchorX: 0.5,
	anchorY: 0.5
});
heart2.x = 280;
heart2.y = 90;
// Ensure the heart is always in the foreground
if (healthBar.children.length > 0) {
	healthBar.setChildIndex(heart2, healthBar.children.length - 1);
} else {
	healthBar.addChild(heart2);
}
// Add third heart to the health_bar
var heart3 = healthBar.attachAsset('heart', {
	anchorX: 0.5,
	anchorY: 0.5
});
heart3.x = 165;
heart3.y = 90;
// Ensure the heart is always in the foreground
if (healthBar.children.length > 0) {
	healthBar.setChildIndex(heart3, healthBar.children.length - 1);
} else {
	healthBar.addChild(heart3);
}
// Add death image to the game at position X=500, Y=100
var deathImage = game.attachAsset('death', {
	anchorX: 0.5,
	anchorY: 0.5
});
deathImage.x = 300;
deathImage.y = 300;
// Ensure the death image is always in the foreground
if (game.children.length > 0) {
	game.setChildIndex(deathImage, game.children.length - 1);
} else {
	game.addChild(deathImage);
}
// Add background2 to the middle of the game
var background2 = game.attachAsset('background2', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 1,
	scaleY: 1
});
background2.x = 2175 / 2;
background2.y = 2620 / 2;
// Add background to the bottom of the game
var background = game.attachAsset('background', {
	anchorX: 0,
	anchorY: 1,
	scaleX: 1,
	scaleY: 1
});
background.y = 2732;
var bullets = []; // Global array to keep track of bullets
var bullets = []; // Global array to keep track of bullets
// Create a plane
var plane1 = new Plane1();
plane1.x = 100;
plane1.y = 2750 - plane1.height; // Bottom of the screen
game.addChild(plane1);
// Create an enemy bot
var enemyBot = new EnemyBot();
enemyBot.x = 1900;
enemyBot.y = 2750 - enemyBot.height; // Bottom of the screen
game.addChild(enemyBot);
// Add a variable to track the enemy's state and time since state change
enemyBot.state = 'chasing';
enemyBot.stateTime = 0;
// Create a plane
// Set up game tick
LK.on('tick', function () {
	plane1.update();
	// Update the enemy's state and behavior based on the state
	enemyBot.stateTime++;
	if (enemyBot.state === 'chasing') {
		if (enemyBot.stateTime >= 300) {
			// 5 seconds * 60 FPS
			enemyBot.state = 'wandering';
			enemyBot.stateTime = 0;
			// Set the enemy's speed to a random direction
			var angle = Math.random() * 2 * Math.PI;
			enemyBot.speedX = Math.cos(angle) * 5;
			enemyBot.speedY = Math.sin(angle) * 5;
		} else {
			// Follow the player's plane
			var dx = plane1.x - enemyBot.x;
			var dy = plane1.y - enemyBot.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance > 0) {
				enemyBot.speedX = dx / distance * 5;
				enemyBot.speedY = dy / distance * 5;
			}
		}
	} else if (enemyBot.state === 'wandering') {
		if (enemyBot.stateTime >= 180) {
			// 3 seconds * 60 FPS
			enemyBot.state = 'chasing';
			enemyBot.stateTime = 0;
		} else if (enemyBot.stateTime % 60 == 0) {
			// every second
			// Change direction randomly within +- 15 degrees
			var currentAngle = Math.atan2(enemyBot.speedY, enemyBot.speedX);
			var newAngle = currentAngle + (Math.random() - 0.5) * Math.PI / 6; // random angle within +- 15 degrees
			enemyBot.speedX = Math.cos(newAngle) * 5;
			enemyBot.speedY = Math.sin(newAngle) * 5;
		}
	}
	enemyBot.update();
	// Plane shoots a bullet every 0.8 seconds
	if (LK.ticks % 48 == 0) {
		plane1.shoot();
	}
	// Update and check bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		bullets[i].move();
		// Remove off-screen bullets
		if (bullets[i].x > 2048 || bullets[i].y > 2732) {
			bullets[i].destroy();
			bullets.splice(i, 1);
		}
	}
});
// Flags to track if the screen is being touched
var isTouchingLeft = false;
var isTouchingRight = false;
// Change enemy direction when the screen is touched
var initialTouchPosition = null;
game.on('down', function (obj) {
	initialTouchPosition = obj.event.getLocalPosition(game);
});
game.on('move', function (obj) {
	if (initialTouchPosition) {
		var currentTouchPosition = obj.event.getLocalPosition(game);
		var swipeDirection = currentTouchPosition.x - initialTouchPosition.x;
		if (swipeDirection < 0) {
			isTouchingLeft = true;
			isTouchingRight = false;
		} else if (swipeDirection > 0) {
			isTouchingRight = true;
			isTouchingLeft = false;
		}
	}
});
// Stop changing enemy direction when the screen is no longer being touched
game.on('up', function (obj) {
	isTouchingLeft = false;
	isTouchingRight = false;
	initialTouchPosition = null;
});
// In the game tick, change plane direction while the screen is being touched
LK.on('tick', function () {
	if (isTouchingLeft) {
		var angle = Math.atan2(plane1.speedY, plane1.speedX);
		angle -= Math.PI / 60; // Subtract 1.5 degrees (in radians) for counter-clockwise rotation
		plane1.speedX = Math.cos(angle) * 7;
		plane1.speedY = Math.sin(angle) * 7;
		plane1.rotation -= Math.PI / 60; // Rotate the plane counter-clockwise
	}
	if (isTouchingRight && LK.ticks > 78) {
		var angle = Math.atan2(plane1.speedY, plane1.speedX);
		angle += Math.PI / 60; // Add 1.5 degrees (in radians) for clockwise rotation
		plane1.speedX = Math.cos(angle) * 7;
		plane1.speedY = Math.sin(angle) * 7;
		plane1.rotation += Math.PI / 60; // Rotate the plane clockwise
	}
	// Check if the plane touches the top or bottom of the screen, collides with the health_bar, or collides with the enemy bot
	// Also check if the images intersect within x=200, y=100
	if (plane1.y <= 0 || plane1.y >= 2752 - plane1.height || plane1.intersects(healthBar) || Math.sqrt(Math.pow(plane1.x - enemyBot.x, 2) + Math.pow(plane1.y - enemyBot.y, 2)) <= enemyBot.width / 2 + plane1.width / 2 && Math.abs(plane1.x - enemyBot.x) <= 200 && Math.abs(plane1.y - enemyBot.y) <= 90) {
		// Check for collision based on visible image, not transparent layer
		if (plane1.alpha !== 0 && enemyBot.alpha !== 0 && plane1.intersects(enemyBot)) {
			// Trigger game over
			LK.showGameOver();
		}
	}
	// Check if the plane touches the bottom of the screen or collides with the health_bar
	if (plane1.y >= 2752 - plane1.height || plane1.intersects(healthBar)) {
		// Trigger game over
		LK.showGameOver();
	}
});