using System;
namespace ProjectI.Combat
{
    // A recipient grants at most the strongest family amount per authored trigger window.
    public sealed class ShieldFamilyBudget
    {
        private double until;
        private float maximum;
        public float Request(float amount,double now,double interval)
        {
            if(float.IsNaN(amount)||float.IsInfinity(amount)||amount<=0||double.IsNaN(now)||double.IsInfinity(now)||now<0||double.IsNaN(interval)||double.IsInfinity(interval)||interval<=0||double.IsInfinity(now+interval))return 0;
            if(now>=until){maximum=0;until=now+interval;}
            float difference=Math.Max(0,amount-maximum);maximum=Math.Max(maximum,amount);return difference;
        }
        public void Clear(){until=0;maximum=0;}
    }
}