- Changed the sentinels in the thinker lists into a proper thinker. The old

way wasn't playing well with the write barriers.
- Fixed: DFrameBuffer::WriteSavePic needs to fix the canvas in place while
  using it.
- Fixed: The sound system was updated every frame, which is a complete waste
  of time. Doing it only once each tic is quite sufficient, since nothing
  really moves between tics, even if the display makes it look otherwise.


SVN r799 (trunk)

src/d_net.cpp

@@ -1825,25 +1825,29 @@ void TryRunTics (void)
 	}
 
 	// run the count tics
-	while (counts--)
+	if (counts > 0)
 	{
-		if (gametic > lowtic)
+		while (counts--)
 		{
-			I_Error ("gametic>lowtic");
-		}
-		if (advancedemo)
-		{
-			D_DoAdvanceDemo ();
-		}
-		if (debugfile) fprintf (debugfile, "run tic %d\n", gametic);
-		C_Ticker ();
-		M_Ticker ();
-		I_GetTime (true);
-		G_Ticker ();
-		GC::CheckGC ();
-		gametic++;
+			if (gametic > lowtic)
+			{
+				I_Error ("gametic>lowtic");
+			}
+			if (advancedemo)
+			{
+				D_DoAdvanceDemo ();
+			}
+			if (debugfile) fprintf (debugfile, "run tic %d\n", gametic);
+			C_Ticker ();
+			M_Ticker ();
+			I_GetTime (true);
+			G_Ticker ();
+			GC::CheckGC ();
+			gametic++;
 
-		NetUpdate ();	// check for new console commands
+			NetUpdate ();	// check for new console commands
+		}
+		S_UpdateSounds (players[consoleplayer].camera);	// move positional sounds
 	}
 }