ForgottenWawiTech/Content/Items/Weapons/Magic/TomeOfUnyielding.cs

using Microsoft.Xna.Framework;
using Terraria;
using Terraria.DataStructures;
using Terraria.ID;
using Terraria.ModLoader;
using ForgottenWawiTech.Content.Rarities;

namespace ForgottenWawiTech.Content.Items.Weapons.Magic
{
    public class TomeOfUnyielding : ModItem
    {
        public override void SetDefaults()
        {
            Item.damage = 520;
            Item.mana = 22;
            Item.crit = 100;
            Item.DamageType = DamageClass.Magic;
            Item.width = 40;
            Item.height = 40;
            Item.useTime = 14;
            Item.useAnimation = 14;
            Item.useStyle = ItemUseStyleID.Shoot;
            Item.knockBack = 4.5f;
            Item.value = Item.sellPrice(gold: 32);
            Item.rare = ModContent.RarityType<SingularityItem>();
            Item.autoReuse = true;
            Item.noMelee = true;
            Item.shoot = ProjectileID.NebulaBlaze1;
            Item.shootSpeed = 20f;
            Item.useAmmo = AmmoID.None;
        }

        public override bool Shoot(Player player, Terraria.DataStructures.EntitySource_ItemUse_WithAmmo source, Vector2 position, Vector2 velocity, int type, int damage, float knockBack)
        {
            Vector2 direction = velocity.LengthSquared() > 0.0001f ? Vector2.Normalize(velocity) : new Vector2(player.direction, 0f);
            int[] primaryBolts =
            {
                ProjectileID.NebulaBlaze1,
                ProjectileID.NebulaBlaze2,
                ProjectileID.SkyFracture,
                ProjectileID.ShadowBeamFriendly,
                ProjectileID.CrystalShard,
                ProjectileID.CrystalLeafShot
            };

            for (int i = 0; i < 5; i++)
            {
                int projType = primaryBolts[Main.rand.Next(primaryBolts.Length)];
                Vector2 perturbedVelocity = direction.RotatedByRandom(MathHelper.ToRadians(8f)) * Item.shootSpeed * Main.rand.NextFloat(0.98f, 1.18f);
                int proj = Projectile.NewProjectile(source, position, perturbedVelocity, projType, (int)(damage * 0.95f), knockBack, player.whoAmI);
                if (proj >= 0)
                {
                    Main.projectile[proj].DamageType = DamageClass.Magic;
                }
            }

            int lingeringType = ProjectileID.MagnetSphereBall;
            Vector2 orbitalVel = direction.RotatedBy(MathHelper.ToRadians(Main.rand.NextBool() ? 22f : -22f)) * (Item.shootSpeed * 0.68f);
            int sphere = Projectile.NewProjectile(source, position, orbitalVel, lingeringType, (int)(damage * 0.85f), 0f, player.whoAmI);
            if (sphere >= 0)
            {
                Main.projectile[sphere].DamageType = DamageClass.Magic;
            }

            if (Main.rand.NextBool(2))
            {
                int burst = Projectile.NewProjectile(source, position, direction * (Item.shootSpeed * 0.85f), ProjectileID.NebulaArcanum, (int)(damage * 0.7f), knockBack * 0.6f, player.whoAmI);
                if (burst >= 0)
                {
                    Main.projectile[burst].DamageType = DamageClass.Magic;
                }
            }

            return false;
        }

        public override Vector2? HoldoutOffset() {
			return new Vector2(2f, -2f);
		}

        public override void ModifyShootStats(Player player, ref Vector2 position, ref Vector2 velocity, ref int type, ref int damage, ref float knockback) {
		Vector2 direction = velocity.LengthSquared() > 0.0001f ? Vector2.Normalize(velocity) : new Vector2(player.direction, 0f);
		Vector2 muzzleOffset = direction * 25f;

			if (Collision.CanHit(position, 0, 0, position + muzzleOffset, 0, 0)) {
				position += muzzleOffset;
			}
		}

    }
}