octogem/Assets/Scripts/Structures/GenericEffect.cs

using UnityEngine;

public abstract class GenericEffect : MonoBehaviour
{
    //Duration doesn't decrease automatically
    private int duration;

    public void SetDuration(int value, Unit self = null)
    {
        bool firstApplication = (self == null);
        duration = value;
        if(firstApplication && self != null)
        {
            OnApply(self);
        }
    }

    public void ChangeDuration(int value, Unit self = null)
    {
        duration += value;
        if(value < 0 && duration <= 0)
        {
            OnExpire(self);
        }
    }

    public virtual void OnApply(Unit self) { }
    public virtual void OnExpire(Unit self) { Destroy(this); } //The effect should remove itself when the duration ends
    public virtual void OnTurnStart(Unit self) { }
    public virtual void OnTurnEnd(Unit self) { }
    public virtual void BeforeAttack(Unit self) { }
    public virtual void AfterAttack(Unit self) { }
    public virtual bool BeforeDeath(Unit self) { return true; } //Returns false if the effect prevented the death of the unit
    public virtual void BeforeStep(Unit self) { }
    public virtual void AfterStep(Unit self) { }
    public virtual void BeforeMove(Unit self) { }
    public virtual void AfterMove(Unit self) { }
    public virtual void BeforeDamage(Unit self, int damageAmount) { }
    public virtual void AfterDamage(Unit self, int damageAmount) { }
    public virtual void BeforeHeal(Unit self, int healAmount) { }
    public virtual void AfterHeal(Unit self, int healAmount) { }
    public virtual void BeforeNewEffect(Unit self, GenericEffect effect) { }
    public virtual void AfterNewEffect(Unit self, GenericEffect effect) { }
}