I am creating a client-side mod that eases the process of debugging.

One feature I would like to add is the ability to add event subscribers to the mod's event bus during runtime.

From the end user's perspective, this would allow them to change behaviors such as stop player rendering by canceling RenderPlayerEvent without the need to relaunch the game. This could make debugging a server-side plugin easier for users that are making a server.

However, I don't think directly adding event subscribers to event buses during runtime would work due to potential concurrent modifications.

Is this possible? If yes, what is the best way to achieve this?

Just subscribe to the general Event class once and do all your handling and cancelling from there, eg. by having an array list of event classes you want to cancel.

Something like

    ArrayList<Class> list ...
    
    void event(Event event)
    {
        for(Class c : list)
            if(c.equals(event.getClass()))
                event.setCanceled(true);
    }

 

32 minutes ago, CAS_ual_TY said:

Just subscribe to the general Event class once and do all your handling and cancelling from there, eg. by having an array list of event classes you want to cancel.

Something like

    ArrayList<Class> list ...
    
    void event(Event event)
    {
        for(Class c : list)
            if(c.equals(event.getClass()))
                event.setCanceled(true);
    }

 

Thanks for the response.

I am currently using this approach. In addition, I am wondering if there is a method to directly operate on the Mod event bus without manualing creating another custom event system/event bus.