mixedcards/Assets/Battle/EnergyPool.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class EnergyPool
{
    private int maxEnergy;
    private int energy;

    public delegate void EnergyChangedAction();
    public event EnergyChangedAction OnEnergyChanged;

    public void Replenish() {
        this.energy = this.maxEnergy;
        TriggerOnEnergyChanged();
    }

    public void DropOneEmotion() {
        this.maxEnergy++;
        this.energy++;
        TriggerOnEnergyChanged();
    }

    public bool CanPayForCard(BaseCard card) {
        return this.energy >= card.GetCost();
    }

    public void PayForCard(BaseCard card) {
        this.energy -= card.GetCost();
        TriggerOnEnergyChanged();
    }

    private void TriggerOnEnergyChanged() {
        if (this.OnEnergyChanged != null) {
            OnEnergyChanged();
        }
    }

    public int MaxEnergy {get => this.maxEnergy;
        set {
            this.maxEnergy = value;
            TriggerOnEnergyChanged();
        }
    }
    public int Energy {get => this.energy;
        set {
            this.energy = value;
            TriggerOnEnergyChanged();
        }
    }
}