How to implement behavior like StartCoroutine by Entitas?

Hi there, I’m migrating my game to using Entitas, what I have now is HitComponent and my code rule is, when entity.isHit = true I need start a coroutine, waiting for 1 second and this coroutine’s going to set entity.isHit = false.

Since my system is not extending MonoBehavior, I can’t access StartCoroutine function, how can I do this by Entitas way?

[FNGgames]

You could try this:

Give HitComponent a field (float cooldownTime) then do entity.AddHit(cooldownTime). Then have a HitCooldownSystem : IExecuteSystem that iterates through the group of entities with hit components, subtracting the delta time from the timer value. When this hits 0, remove the hit component.

public class HitComponent : IComponent {
   public float cooldownTime;
}

public class HitCooldownSystem : IExecuteSystem {
   readonly IGroup<GameEntity> _hitGroup;

   public HitCooldownSystem(Contexts contexts) {
       _hitGroup = contexts.game.GetGroup(GameMatcher.Hit);
   }

   public override void Execute() {
       foreach (var e in _hitGroup.GetEntities()) {
           e.ReplaceHit(e.hit.cooldownTime - deltaTime);
           if (e.hit.cooldownTime <= 0) e.RemoveHit();
       }
   }
}

[sschmid]

@lai32290 @FNGgames summarized pretty good (as always 😉) first answer is a very common way to deal with timers and cooldowns. I’m just commenting to emphasize not to do the 2nd solution. Technically it works, but you would basically hide logic in a component, which you should avoid.