using Microsoft.Xna.Framework;
using Terraria;
using Terraria.ID;
using Terraria.ModLoader;
using System;

namespace Turrets.TurretAmmo
{
	public class Bullet : ModProjectile
	{
		public override void SetStaticDefaults()
		{
			DisplayName.SetDefault("Turret Bullet");
		}
		public override void SetDefaults()
		{
			projectile.CloneDefaults(207);
			aiType = 207;
			projectile.ranged = true;
		}
		public void AI()
		{
			var enemynumber = 0;
			var x = 0;
			var y = 0;
			var score = 100;
			var bestscore = 100;
			for (int i = 0; i < Main.npc.Length; i++) {
				var enemy = Main.npc[i];
				score = (Math.Abs(Convert.ToInt32(projectile.Center.X) - Convert.ToInt32(enemy.position.X)) + Math.Abs(Convert.ToInt32(projectile.Center.Y) - Convert.ToInt32(enemy.position.Y)));
				if (score < bestscore) {
					bestscore = score;
					x = Convert.ToInt32(enemy.position.X);
					y = Convert.ToInt32(enemy.position.Y);
					enemynumber = i;
				}
			}
			NPC target = Main.npc[enemynumber];
			float shootToX = target.position.X + (float)target.width * 0.5f - projectile.Center.X;
			float shootToY = target.position.Y - projectile.Center.Y;
			float distance = (float)System.Math.Sqrt((double)(shootToX * shootToX + shootToY * shootToY));
			if(distance < 480f && !target.friendly && target.active)
			{
				distance = 3f / distance;
				shootToX *= distance * 5;
				shootToY *= distance * 5;
				Projectile.NewProjectile(projectile.Center.X, projectile.Center.Y, shootToX, shootToY, 1, 0, 0, Main.myPlayer, 0f, 0f);
				Main.PlaySound(2, (int)projectile.position.X, (int)projectile.position.Y, 11);
				projectile.ai[0] = 0f;
			}
		}
	}
}