PrismGlobalNPC.cs

using Terraria;
using Terraria.ID;
using Terraria.ModLoader;

namespace prismmod
{
    internal class PrismGlobalNPC : GlobalNPC
    {
        public override void SetupShop(int type, Chest shop, ref int nextSlot)
        {
            if (type == NPCID.Dryad)
            {
                if (ModContent.GetInstance<PrismWorld>().downedGargantuanTortoise)
                {
                    shop.item[nextSlot].SetDefaults(ModContent.ItemType<Items.Consumables.MechaEgg>());
                    nextSlot++;
                }
            }
        }

        /*public override void AI()
        {
            bool nearBoss = false;
            foreach(NPC oNpc in Main.ncps[])
            {
                if()//Check distance
                {
                    nearBoss = true;
                }
            }
            if(!npc.boss&&nearBoss)
            {
                npc.life=0;
            }
        }*/

        public override void NPCLoot(NPC npc)
        {
            if (npc.type == NPCID.Demon)
            {
                double chance = Main.rand.NextDouble();
                if (chance <= 0.005)
                {
                    Item.NewItem(npc.getRect(), mod.ItemType("CursedPan"), 1);
                }
            }
        }
    }
}