gamedevlists-windows

RE: [GD-Windows] Suspending execution

[Andy G. <an...@mi...>]

Adding the WaitMessage like you say works great - except in network
games - but then pause is an issue anyway :-)

One other thing you may want to add is detect if you are the foreground
app and if you are not, add a Sleep(50) before the peekmessage loop - I
find this makes using debuggers or alt tabbing much much more responsive
(esp. on single processor machines).

I don't get mouse move messages all the time - maybe you have a jittery
mouse?

Andy Glaister.

-----Original Message-----
From: Brian Hook [mailto:bri...@py...]=20
Sent: Monday, January 07, 2002 11:16 AM
To: 'Gamedevlists-Windows@Lists. Sourceforge. Net'
Subject: [GD-Windows] Suspending execution


Okay, next question up.  My current game is doing the traditional "run
as fast as you can" model of execution, which eats CPU like mad stupid
crazy.  The traditional loop is:

while ( PeekMessage( ... ) )
{
    if ( GetMessage( ... ) )=20
    {=20
        Translate/DispatchMessage( ... );
    }
    else
    {
        //app quit
    }
}

To avoid hammering the CPU, I'm thinking of slightly changing it to:

if ( bPaused )
{
   WaitMessage();
}

//do regular loop here

Are there any hidden gotchas with WaitMessage()?

One other thing I've noticed is that I'm constantly getting WM_MOUSEMOVE
messages even if the mouse isn't moving (confirmed with Spy++).  I
assume this is expected behaviour?

Brian


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RE: [GD-Windows] Suspending execution

[Brian H. <bri...@py...>]

> Adding the WaitMessage like you say works great - except in 
> network games - but then pause is an issue anyway :-)

Right =)

> One other thing you may want to add is detect if you are the 
> foreground app and if you are not, add a Sleep(50) before the 
> peekmessage loop - I find this makes using debuggers or alt 
> tabbing much much more responsive (esp. on single processor machines).

Good idea, I'll look at that.

> I don't get mouse move messages all the time - maybe you have 
> a jittery mouse?

It's an MS optical mouse, but if it was jittery, I'd expect it to show
me different cursor positions.  Unless the driver is sending out
messages when it sees movement, even if the movement isn't large enough
to warrant a new message.

Brian