pls send help

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

namespace BadMod.Items
{
	public class PotionOStorm : ModItem
	{
		public override void SetStaticDefaults()
		{
			DisplayName.SetDefault("Potion O' Rain"); // By default, capitalization in classnames will add spaces to the display name. You can customize the display name here by uncommenting this line.
			Tooltip.SetDefault("Oh god nos");
		}

		public override void SetDefaults()
		{
			item.melee = false;
			item.width = 12;
			item.height = 12;
			item.useTime = 25;
			item.useAnimation = 20;
			item.useStyle = 2;
			item.value = 150;
			item.rare = 1;
			item.UseSound = SoundID.Item1;
			item.autoReuse = false;
			item.consumable = true;

			item.shoot = 680;
			item.shootSpeed = 20f;

			//The useStyle of the item.
			//Use useStyle 1 for normal swinging or for throwing
			//use useStyle 2 for an item that drinks such as a potion,
			//use useStyle 3 to make the sword act like a shortsword
			//use useStyle 4 for use like a life crystal,
			//and use useStyle 5 for staffs or guns
		}

		public override void AddRecipes()
		{
			ModRecipe recipe = new ModRecipe(mod);
			recipe.AddIngredient(ItemID.DirtBlock, 5);
			recipe.AddTile(TileID.WorkBenches);
			recipe.SetResult(this);
			recipe.AddRecipe();
		}

		// Star Wrath/Starfury style weapon. Spawn projectiles from sky that aim towards mouse.
		// See Source code for Star Wrath projectile to see how it passes through tiles.
		//	The following changes to SetDefaults

		public override bool Shoot(Player player, ref Vector2 position, ref float speedX, ref float speedY, ref int type, ref int damage, ref float knockBack)
		{
			Vector2 target = Main.screenPosition + new Vector2((float)Main.mouseX, (float)Main.mouseY);
			float ceilingLimit = target.Y;
			if (ceilingLimit > player.Center.Y - 200f)
			{
				ceilingLimit = player.Center.Y - 200f;
			}
			for (int i = 0; i < 15; i++)
			{
				position = player.Center + new Vector2((-(float)Main.rand.Next(0, 401) * player.direction), -600f);
				position.Y -= (100 * i);
				Vector2 heading = target - position;
				if (heading.Y < 0f)
				{
					heading.Y *= -1f;
				}
				if (heading.Y < 20f)
				{
					heading.Y = 20f;
				}
				heading.Normalize();
				heading *= new Vector2(speedX, speedY).Length();
				speedX = heading.X;
				speedY = heading.Y + Main.rand.Next(-40, 41) * 0.02f;

				Projectile.NewProjectile(position.X, position.Y, speedX, speedY, type, damage * 2, knockBack, player.whoAmI, 0f, ceilingLimit);

			}
			return false;
		}
		public override void OnHitNPC(NPC target, int damage, float knockback, bool crit)
		{
			Player p = Main.player[projectile.owner];
			int healingAmount = damage / 18; //decrease the value 30 to increase heal, increase value to decrease. Or you can just replace damage/x with a set value to heal, instead of making it based on damage.
			p.statLife += healingAmount;
			p.HealEffect(healingAmount, true);
		}
	}
}