Decimation_Mod/Content/Debug/DebugAI.cs

using Decimation.Lib.Items;
using Terraria;
using Terraria.ID;
using Terraria.ModLoader;

namespace Decimation.Content.Debug
{
    public class DebugAIItem : DecimationItem
    {
        public override string Texture => "Terraria/Item_" + ItemID.Star;
        protected override string ItemName => "Debug AI";

        protected override void Init()
        {
        }

        public override bool UseItem(Player player)
        {
            DebugAI.debugging = !DebugAI.debugging;

            return true;
        }
    }

    class DebugAI : GlobalNPC
    {
        public static bool debugging;

        public override bool PreAI(NPC npc)
        {
            if (debugging) return false;

            return base.PreAI(npc);
        }
    }
}