wxruby users - Aug 2004 - nothing happens unless I move the mouse

Hi,

I tried to think of a good subject, but that was the best I could come
up with.  Here is my problem (pretty much same as before).

I have a program I''ve written, and I want to write a wxRuby front end
for it.  There are hooks in the program that call methods in the
wxRuby part of things, however, nothing happens in the actual program
unless I''m triggering events in the wxRuby part by moving the mouse or
other such things.  I''m really not sure what to do - I think
I''m just
missing something obvious.

I''ve attached the programs, so if anyone can let me know what
I''m
doing wrong, I''d really appreciate it.

To run the programs, run "runserver.rbw" and then run two instances of
"simpokerplayer.rb".  For simpokerplayer, you have to enter a name to
standard in after it starts, to identify the player.  The server
should then start running a game. However, it only does stuff when you
move the mouse over the gui of the server.

Thanks in advance,

-Kurt
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Hi Kurt,

Didn''t have a lot of time to play with your code, but you might want to
check how you''re handlling the connect.accept and threads. My
understanding is that once you accept you should launch an independent
thread.

HTH,
Assaph
 

-----Original Message-----
From: wxruby-users-bounces@rubyforge.org
[mailto:wxruby-users-bounces@rubyforge.org] On Behalf Of Kurt Dresner
Sent: Monday, 2 August 2004 3:46 AM
To: General discussion of wxRuby
Subject: [Wxruby-users] nothing happens unless I move the mouse

Hi,

I tried to think of a good subject, but that was the best I could come
up with.  Here is my problem (pretty much same as before).

I have a program I''ve written, and I want to write a wxRuby front end
for it.  There are hooks in the program that call methods in the wxRuby
part of things, however, nothing happens in the actual program unless
I''m triggering events in the wxRuby part by moving the mouse or other
such things.  I''m really not sure what to do - I think I''m
just missing
something obvious.

I''ve attached the programs, so if anyone can let me know what
I''m doing
wrong, I''d really appreciate it.

To run the programs, run "runserver.rbw" and then run two instances of
"simpokerplayer.rb".  For simpokerplayer, you have to enter a name to
standard in after it starts, to identify the player.  The server should
then start running a game. However, it only does stuff when you move the
mouse over the gui of the server.

Thanks in advance,

-Kurt

Kurt Dresner wrote:
> I have a program I''ve written, and I want to write a wxRuby front
end
> for it.  There are hooks in the program that call methods in the
> wxRuby part of things, however, nothing happens in the actual program
> unless I''m triggering events in the wxRuby part by moving the
mouse or
> other such things.  I''m really not sure what to do - I think
I''m just
> missing something obvious.
Sorry it took me a while to respond. I needed to actually run the 
programs and fiddle with them to be able to answer. I had seen this 
myself at one point, but couldn''t remember the context, and
wasn''t
certain about the solution.

The problem is not exactly obvious, but makes sense once you understand 
what is happening. And there is an easy fix/workaround.

Your server app launches a ruby Thread to handle the socket stuff. The 
problem is that wxRuby normally effectively sleeps (in C++) while 
waiting for an event. When no events are coming through, no ruby code is 
invoked, the ruby thread scheduler never has a chance to work.

When you are moving the mouse in the server window, or otherwise 
generating events, ruby gives time to the socket thread.

I suppose one trick would be to set up a timer that fired ten times each 
second, or something like that. But a simpler approach is to take 
advantage of wxRuby''s idle processing. I added this line in the
SPSFrame
constructor:
      evt_idle {|e| onIdle(e)}

And I added this method to the SPSFrame class:
   def onIdle(e)
     e.request_more
   end

At least on my system, this idle loop does not consume detectable CPU 
time when no players are connected. I don''t know if that will be the 
case on all systems. If it is a problem, the timer approach might work 
better.

Cheers,

Kevin