ArachnaeSwarm/Source/ArachnaeSwarm/CompAbilityEffect_NeedCost.cs

using RimWorld;
using RimWorld.Planet;
using Verse;

namespace ArachnaeSwarm
{
    public class CompProperties_AbilityNeedCost : CompProperties_AbilityEffect
    {
        public NeedDef needDef;
        public float needCost;
        public string failMessage;

        public CompProperties_AbilityNeedCost()
        {
            compClass = typeof(CompAbilityEffect_NeedCost);
        }
    }

    public class CompAbilityEffect_NeedCost : CompAbilityEffect
    {
        public new CompProperties_AbilityNeedCost Props => (CompProperties_AbilityNeedCost)props;

        public override bool GizmoDisabled(out string reason)
        {
            Pawn caster = parent.pawn;
            if (caster != null && caster.needs != null)
            {
                if (caster.needs.TryGetNeed(Props.needDef, out Need need))
                {
                    if (need.CurLevel < Props.needCost)
                    {
                        reason = Props.failMessage;
                        return true;
                    }
                }
            }
            reason = null;
            return false;
        }

        public override void Apply(LocalTargetInfo target, LocalTargetInfo dest)
        {
            base.Apply(target, dest);
            Pawn caster = parent.pawn;
            if (caster != null && caster.needs != null)
            {
                if (caster.needs.TryGetNeed(Props.needDef, out Need need))
                {
                    need.CurLevel -= Props.needCost;
                }
            }
        }
    }
}