/**** 
* Classes
****/ 
//<Assets used in the game will automatically appear here>
// Bullet class
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		shape: 'ellipse',
		hitArea: new Rectangle(49.5, 49.5, 1, 1)
	});
	var bulletCircle = self.attachAsset('yellowCircle', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.1,
		scaleX: 2,
		scaleY: 2
	});
	self.speed = 0.25; // Half the player's movement speed
	self.lifespan = 100; // 1 second lifespan (60 frames)
	self.update = function () {
		self.x += self.speedX * self.speed;
		self.y += self.speedY * self.speed;
		self.lifespan--;
		if (self.lifespan > 0) {
			self.alpha = 0.3; // Make the bullet half transparent
		} else {
			self.alpha = 0.6; // Make the bullet fully opaque
		}
		self.speed *= 0.99995; // Slow down the bullet over time
		self.scale.x += 0.0005; // Increase the bullet size over time
		self.scale.y += 0.0005; // Increase the bullet size over time
		bulletCircle.scale.x = self.scale.x * 2; // Update the circle size
		bulletCircle.scale.y = self.scale.y * 2; // Update the circle size
		// Change the bullet's color over time
		var progress = self.lifespan / 100; // Assuming lifespan is 100 frames
		var startColor = 0xff0000; // Red
		var endColor = 0x0000ff; // Blue
		var currentColor = interpolateColor(startColor, endColor, progress);
		bulletGraphics.tint = currentColor;
		if (self.y + bulletGraphics.height / 2 > 2732) {
			self.speedY = -self.speedY;
			LK.getSound('bulletWallCollision').play();
		}
		if (self.y - bulletGraphics.height / 2 < 0) {
			self.speedY = -self.speedY;
			LK.getSound('bulletWallCollision').play();
		}
		if (self.x + bulletGraphics.width / 2 > 2048) {
			self.speedX = -self.speedX;
			LK.getSound('bulletWallCollision').play();
		}
		if (self.x - bulletGraphics.width / 2 < 0) {
			self.speedX = -self.speedX;
			LK.getSound('bulletWallCollision').play();
		}
	};
});
var Pellet = Container.expand(function () {
	var self = Container.call(this);
	var pelletGraphics = self.attachAsset('pellet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0.95; // Half the player's movement speed
	self.speedX = Math.random() * 2 - 1; // Random direction
	self.speedY = Math.random() * 2 - 1; // Random direction
	self.update = function () {
		self.x += self.speedX * self.speed;
		self.y += self.speedY * self.speed;
		if (self.y + pelletGraphics.height / 2 > 2732) {
			self.speedY = -self.speedY;
			LK.getSound('bulletWallCollision').play();
		}
		if (self.y - pelletGraphics.height / 2 < 0) {
			self.speedY = -self.speedY;
			LK.getSound('bulletWallCollision').play();
		}
		if (self.x + pelletGraphics.width / 2 > 2048) {
			self.speedX = -self.speedX;
			LK.getSound('bulletWallCollision').play();
		}
		if (self.x - pelletGraphics.width / 2 < 0) {
			self.speedX = -self.speedX;
			LK.getSound('bulletWallCollision').play();
		}
	};
});
// Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('snakeHead', {
		anchorX: 0.5,
		anchorY: 0.5,
		shape: 'ellipse',
		hitArea: new Rectangle(25, 25, 50, 50)
	});
	self.speed = 3; // Initialize player speed
	self.update = function () {
		var dx = targetX - self.x;
		var dy = targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 1) {
			// Only move if the distance is greater than a small threshold
			var speed = Math.min(Math.max(distance / 100, 3), 9); // Speed is proportional to distance, capped at 20
			var newDirection = {
				x: dx / distance,
				y: dy / distance
			};
			var directionChange = Math.abs(playerDirection.x - newDirection.x) + Math.abs(playerDirection.y - newDirection.y);
			if (directionChange > 0.01) {
				// If the player is turning, slow down
				self.speed = Math.max(self.speed * 0.985, 3);
			} else {
				// If the player is not turning, speed up
				self.speed += 0.03;
			}
			self.x += dx / distance * self.speed;
			self.y += dy / distance * self.speed;
			playerDirection = newDirection;
			playerMovedDistance += distance;
			speedTxt.setText(Math.round(player.speed * 100) / 100);
		}
		// Check for collision with pellet
		for (var i = pellets.length - 1; i >= 0; i--) {
			if (self.intersects(pellets[i])) {
				console.log("Player intersects with pellet");
				var redCircle = new RedCircle();
				redCircle.x = pellets[i].x;
				redCircle.y = pellets[i].y;
				game.addChild(redCircle);
				pellets[i].destroy();
				pellets.splice(i, 1);
				// Destroy bullets overlapping with redCircle on the frame it is created
				for (var j = bullets.length - 1; j >= 0; j--) {
					if (bullets[j].intersects(redCircle)) {
						bullets[j].destroy();
						bullets.splice(j, 1);
						score++;
						scoreTxt.setText(score);
					}
				}
				// Play sound effect for pellet eaten
				LK.getSound('pelletEaten').play();
			}
		}
	};
	self.down = function (x, y, obj) {
		var game_position = game.toLocal(obj.global);
		targetX = game_position.x;
		targetY = game_position.y;
	};
	self.move = function (x, y, obj) {
		var game_position = game.toLocal(obj.global);
		targetX = game_position.x;
		targetY = game_position.y;
	};
});
// RedCircle class
var RedCircle = Container.expand(function () {
	var self = Container.call(this);
	var circleGraphics = self.attachAsset('redCircle', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 4,
		scaleY: 4
	});
	self.lifespan = 170; // Decrease lifespan as score increases
	self.update = function () {
		self.lifespan--;
		if (self.lifespan > 0) {
			self.alpha = self.lifespan / 110 - 0.5; // Fade out over time
			self.scale.x = self.scale.y = self.lifespan / 130; // Decrease size over time
		} else {
			self.destroy(); // Destroy the circle when it's fully faded
		}
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000 //Init game with black background 
});

/**** 
* Game Code
****/ 
// Helper function to interpolate between two colors
var scoreTxt = new Text2('0', {
	size: 400,
	fill: "#202000",
	font: "monospace",
	strokeThickness: 0
});
scoreTxt.anchor.set(0.5, 0.5);
scoreTxt.x = 2048 / 2;
scoreTxt.y = 2732 / 2;
game.addChild(scoreTxt);
var speedTxt = new Text2('0', {
	size: 100,
	fill: "#ffffff",
	font: "monospace",
	strokeThickness: 0
});
speedTxt.anchor.set(0.5, 0);
speedTxt.x = 2048 / 2;
speedTxt.y = 50;
LK.gui.top.addChild(speedTxt);
// Add scoreTxt after bullets to ensure it is drawn above them
function interpolateColor(color1, color2, factor) {
	var r1 = color1 >> 16 & 0xff;
	var g1 = color1 >> 8 & 0xff;
	var b1 = color1 & 0xff;
	var r2 = color2 >> 16 & 0xff;
	var g2 = color2 >> 8 & 0xff;
	var b2 = color2 & 0xff;
	var r = Math.round(r1 + factor * (r2 - r1));
	var g = Math.round(g1 + factor * (g2 - g1));
	var b = Math.round(b1 + factor * (b2 - b1));
	return r << 16 | g << 8 | b;
}
var bullets = [];
var score = 0;
var gracePeriod = 180; // 3 seconds at 60FPS
var playerDirection = {
	x: 0,
	y: 0
};
var playerMovedDistance = 0;
var pellets = [];
var player = new Player();
player.x = 2048 / 2;
player.y = 2732 / 2;
game.addChild(player);
var targetX = player.x;
var targetY = player.y;
game.update = function () {
	for (var i = bullets.length - 1; i >= 0; i--) {
		bullets[i].update();
		if (gracePeriod <= 0 && bullets[i].lifespan <= 0) {
			var playerCenter = {
				x: player.x,
				y: player.y
			};
			var bulletCenter = {
				x: bullets[i].x,
				y: bullets[i].y
			};
			if (Math.abs(playerCenter.x - bulletCenter.x) < player.width / 2 && Math.abs(playerCenter.y - bulletCenter.y) < player.height / 2) {
				console.log("Bullet intersects with player center at:", playerCenter, "Bullet center at:", bulletCenter);
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
				return;
			}
		}
	}
	if (gracePeriod > 0) {
		gracePeriod--;
	}
	if (pellets.length < 2 && LK.ticks % 60 == 0) {
		// Spawn a pellet every second if there are less than two pellets
		var newPellet = new Pellet();
		// Ensure pellet does not spawn close to the wall
		var distance;
		do {
			newPellet.x = Math.random() * (2048 - 400) + 200; // Random x position
			newPellet.y = Math.random() * (2732 - 400) + 200; // Random y position
			distance = Math.sqrt(Math.pow(newPellet.x - player.x, 2) + Math.pow(newPellet.y - player.y, 2));
		} while (distance < 500); // Ensure pellet spawns at least 500 units away from the player
		game.addChild(newPellet);
		pellets.push(newPellet);
	}
	if (playerMovedDistance >= 50 && LK.ticks % Math.max(20 - Math.log(LK.getScore() + 1), 5) == 0) {
		var newBullet = new Bullet();
		newBullet.x = player.x - playerDirection.x * 60; // Spawn bullet closer to the player
		newBullet.y = player.y - playerDirection.y * 60;
		newBullet.speedX = playerDirection.x * 5; // Bullet moves in the player's direction
		newBullet.speedY = playerDirection.y * 5;
		bullets.push(newBullet);
		game.addChild(newBullet);
		// Play sound effect for bullet spawn
		LK.getSound('bulletSpawn').play();
	}
};
game.down = function (x, y, obj) {
	player.down(x, y, obj);
};
game.move = function (x, y, obj) {
	player.move(x, y, obj);
};
game.up = function (x, y, obj) {
	// No action needed on up event
};