Author Topic: Event Messaging/Mailing (Read 21516 times)

Groogy · « **on:** January 19, 2009, 10:34:43 pm »

I got this idea from Rubygame. In Rubygame they got the classical Event Polling but you can extend the EventQueue class with a MailQueue module which gives EventQueue the ability to have objects subscribed to it together with an event. And when that event is polled it is sent like a mail to each object subscribed to that event making it much easier to make interactive objects.

Would it be possible to add this to SFML? If it is I can help out with writing it.
I think I've written it several times for SDL/Xlib though calling it SignalSender instead.

Laurent · « **Reply #1 on:** January 19, 2009, 10:45:16 pm »

It can be added on top of SFML very easily with one of the multiple signal/slot libraries available (like boost.signal).

I don't think it requires modifying SFML directly.

And feel free to share some code on the wiki if you implement such a system

Groogy · « **Reply #2 on:** January 19, 2009, 10:50:47 pm »

Well since this isn't Ruby I have to implement an abstract base class too. Kinda like Drawable. Ruby has it easy for itself as you don't have to take note to the type of the object when calling functions (When you are actually sending a message to the object).

Though If I get a complete system working. I'll be sure to post it at the Wiki, though under what name?

Laurent · « **Reply #3 on:** January 19, 2009, 11:06:04 pm »

Well, you don't need any base class. boost.signal and similar libraries provide much more powerful systems. Implementing this using boost would be quite straight-forward, actually.

If you don't know boost I encourage you to take a look at it

Groogy · « **Reply #4 on:** January 19, 2009, 11:29:29 pm »

Looks interesting. Will have a look at it under my Programming Lesson. Don't think the teacher will complain ^_^

Thanks for the tip.