Terraria.ModLoader.NPCLoader.NPCAI C# (CSharp) Method

        public static void NPCAI(NPC npc)
        {
            if (PreAI(npc))
            {
                int type = npc.type;
                bool useAiType = npc.modNPC != null && npc.modNPC.aiType > 0;
                if (useAiType)
                {
                    npc.type = npc.modNPC.aiType;
                }
                npc.VanillaAI();
                if (useAiType)
                {
                    npc.type = type;
                }
                AI(npc);
            }
            PostAI(npc);
        }