When I call my Game_Main function from the event loop the program runs very unevenly. There are long pauses then the program catches up. Game_Main isn''t doing much other than updating the locations of a couple of objects, and blting them to a back buffer then flipping the primary and secondary surfaces. The jerkiness is alleviated and everything appears to run smoothly if I start a timer, even though I don''t do anything with the timer messages. The event loop is:

while(TRUE)
	
	{
	if (PeekMessage( &lpMsg, NULL, 0, 0, PM_REMOVE ) )					// begin the message loop 
		{
			if (lpMsg.message == WM_QUIT)
				break;		
			TranslateMessage( &lpMsg );
			DispatchMessage( &lpMsg );
			Game_Main(NULL, 0);
		}
	}
 

This is being run on Win2K. Any suggestions? Thanks, Aaron

It's because you're only calling the game function if you have received a windows message. You should take the Game_Main call out of that if statement (but keep it in the infinite loop).

When you set a timer, windows will keep sending you messages, which was why it worked when you tried that.

John B

Edited by - JohnBSmall on March 2, 2002 3:37:08 PM

Aha!
I knew it was something like that. Thanks! This is the problem with learning all your C++ on Unix/console apps.

-Aaron