Decimation_Mod/Content/Items/Accessories/DraculaPendant.cs

using Decimation.Content.Buffs.Buffs;
using Decimation.Lib.Items;
using Decimation.Lib.Util;
using Terraria;
using Terraria.ID;
using Terraria.ModLoader;

namespace Decimation.Content.Items.Accessories
{
    internal class DraculaPendant : DecimationAccessory
    {
        protected override string ItemName => "Dracula's Pendant";

        protected override string ItemTooltip => "Dont tread under the suns gaze!\n\n" +
                                                 "Gives Vampire debuff\n" +
                                                 "Bats will be friendly\n" +
                                                 "You will burn at sun";

        protected override void InitAccessory()
        {
            item.width = 46;
            item.height = 62;
            item.rare = Rarity.LightPurple.GetRarityValue();
            this.item.value = Item.buyPrice(0, 4);
        }

        public override void UpdateAccessory(Player player, bool hideVisual)
        {
            player.AddBuff(ModContent.BuffType<Vampire>(), 1);

            player.npcTypeNoAggro[NPCID.CaveBat] = true;
            player.npcTypeNoAggro[NPCID.JungleBat] = true;
            player.npcTypeNoAggro[NPCID.Hellbat] = true;
            player.npcTypeNoAggro[NPCID.IceBat] = true;
            player.npcTypeNoAggro[NPCID.GiantBat] = true;
            player.npcTypeNoAggro[NPCID.IlluminantBat] = true;
            player.npcTypeNoAggro[NPCID.Lavabat] = true;
            player.npcTypeNoAggro[NPCID.Slimer] = true;
            player.npcTypeNoAggro[NPCID.GiantFlyingFox] = true;
            player.npcTypeNoAggro[NPCID.Vampire] = true;

            if (player.ZoneOverworldHeight && Main.dayTime)
            {
                int damages = 4;
                player.lifeRegen -= damages;

                Dust.NewDust(player.position, player.width, player.height, DustID.GoldFlame);
            }
        }
    }

    public class DraculaPendantDrop : GlobalNPC
    {
        public override void NPCLoot(NPC npc)
        {
            if (npc.type == NPCID.Vampire && Main.rand.NextBool(50))
                Item.NewItem(npc.getRect(), ModContent.ItemType<DraculaPendant>());
        }
    }
}