Find , Lose Ammo , Shoot Item

public void UseItem(Player player, int playerID)
{
	if (playerID == Main.myPlayer)
	{
        #region if it needs ammo
                        Item MyCheckedItem = new Item();
                        bool FoundUsableAmmo = false;
                        bool FoundAmmoInAmmoSlot = false;
                        for (int PassingIndex = 44; PassingIndex < 48; PassingIndex++)
                        {
                            if (player.inventory[PassingIndex].ammo == item.useAmmo && player.inventory[PassingIndex].stack > 0)
                            {
                                MyCheckedItem = player.inventory[PassingIndex];
                                FoundUsableAmmo = true;
                                FoundAmmoInAmmoSlot = true;
                                break;
                            }
                        }
                        if (!FoundAmmoInAmmoSlot)
                        {
                            for (int PasserIndex = 0; PasserIndex < 44; PasserIndex++)
                            {
                                if (player.inventory[PasserIndex].ammo == item.useAmmo && player.inventory[PasserIndex].stack > 0)
                                {
                                    MyCheckedItem = player.inventory[PasserIndex];
                                    FoundUsableAmmo = true;
                                    break;
                                }
                            }
                        }
                        if (FoundUsableAmmo)
                        {
                            bool DoNotConsumeAmmo = false;
                            if (player.ammoCost80 && Main.rand.Next(5) == 0)
                            {
                                DoNotConsumeAmmo = true;
                            }
                            if (player.ammoCost75 && Main.rand.Next(4) == 0)
                            {
                                DoNotConsumeAmmo = true;
                            }
                            if (!DoNotConsumeAmmo)
                            {
                                    MyCheckedItem.stack--;
                                    if (MyCheckedItem.stack <= 0)
                                    {
                                        MyCheckedItem.active = false;
                                        MyCheckedItem.name = "";
                                        MyCheckedItem.type = 0;
                                    }
                            }
                    #endregion
    }
    if(FoundUsableAmmo)
    {
        #region regular
	int MyProjectileIndex = -1;
    int MyProjectileSpeed = 10;
    int MyProjectileRandomOffseter = 5;
    float x = (float) (player.itemLocation.X + (float)Main.itemTexture[item.type].Width * 0.5f)-7-MyProjectileRandomOffseter+Main.rand.Next(MyProjectileRandomOffseter);
	player.direction = -1;
	if ((player.itemLocation.X + (float)Main.itemTexture[item.type].Width * 0.5f) < (Main.mouseX + Main.screenPosition.X))
	{
	    player.direction = 1;
        x = (float) (player.itemLocation.X + (float)Main.itemTexture[item.type].Width * 0.5f)-7+MyProjectileRandomOffseter+Main.rand.Next(MyProjectileRandomOffseter);
    }

    float y = (float) (player.itemLocation.Y + (float)Main.itemTexture[item.type].Height * 0.5f)-Main.rand.Next(-MyProjectileRandomOffseter,MyProjectileRandomOffseter);

	float rot = (float) Math.Atan2((Main.mouseY + Main.screenPosition.Y)-(y + 5),(Main.mouseX + Main.screenPosition.X) - (x + 5));

    float VX = (float)((Math.Cos(rot) * MyProjectileSpeed));
    float VY = (float)((Math.Sin(rot) * MyProjectileSpeed));

    VX = ((Main.mouseX + Main.screenPosition.X) - (player.position.X + player.width * 0.5f));
    VY = ((Main.mouseY + Main.screenPosition.Y) - (player.position.Y + player.height * 0.5f));
    float distance = (float) Math.Sqrt((double) ((VX * VX) + (VY * VY)));
	distance = MyProjectileSpeed / distance;
	VX *= distance;
	VY *= distance;

	MyProjectileIndex = Projectile.NewProjectile(
    	x,
    	y,
    	VX,
    	VY,
    	"Blade Shot", //Type
    	(int) (item.damage*player.magicDamage), //Damage
    	2.0f,
    	playerID
    );
	NetMessage.SendData(27, -1, -1, "", MyProjectileIndex, 0f, 0f, 0f, 0);
	}
#endregion
    }
}