using Microsoft.Xna.Framework;
using System;
namespace Terraria
{
	public class Star
	{
		public Vector2 position;
		public float scale;
		public float rotation;
		public int type;
		public float twinkle;
		public float twinkleSpeed;
		public float rotationSpeed;
		public static void SpawnStars()
		{
			Main.numStars = Main.rand.Next(65, 130);
			Main.numStars = 130;
			for (int i = 0; i < Main.numStars; i++)
			{
				Main.star[i] = new Star();
				Main.star[i].position.X = (float)Main.rand.Next(-12, Main.screenWidth + 1);
				Main.star[i].position.Y = (float)Main.rand.Next(-12, Main.screenHeight);
				Main.star[i].rotation = (float)Main.rand.Next(628) * 0.01f;
				Main.star[i].scale = (float)Main.rand.Next(50, 120) * 0.01f;
				Main.star[i].type = Main.rand.Next(0, 5);
				Main.star[i].twinkle = (float)Main.rand.Next(101) * 0.01f;
				Main.star[i].twinkleSpeed = (float)Main.rand.Next(40, 100) * 0.0001f;
				if (Main.rand.Next(2) == 0)
				{
					Main.star[i].twinkleSpeed *= -1f;
				}
				Main.star[i].rotationSpeed = (float)Main.rand.Next(10, 40) * 0.0001f;
				if (Main.rand.Next(2) == 0)
				{
					Main.star[i].rotationSpeed *= -1f;
				}
			}
		}
		public static void UpdateStars()
		{
			for (int i = 0; i < Main.numStars; i++)
			{
				Main.star[i].twinkle += Main.star[i].twinkleSpeed;
				if (Main.star[i].twinkle > 1f)
				{
					Main.star[i].twinkle = 1f;
					Main.star[i].twinkleSpeed *= -1f;
				}
				else
				{
					if ((double)Main.star[i].twinkle < 0.5)
					{
						Main.star[i].twinkle = 0.5f;
						Main.star[i].twinkleSpeed *= -1f;
					}
				}
				Main.star[i].rotation += Main.star[i].rotationSpeed;
				if ((double)Main.star[i].rotation > 6.28)
				{
					Main.star[i].rotation -= 6.28f;
				}
				if (Main.star[i].rotation < 0f)
				{
					Main.star[i].rotation += 6.28f;
				}
			}
		}
	}
}