Game Engine Architecture

337

TranslateMessage (&msg);

DispatchMessage (&msg);

}

// Measure real delta time in milliseconds.

do

{

newtime = Sys_Milliseconds ();

time = newtime - oldtime;

} while (time < 1);

// Run a frame of the game.

Qcommon_Frame (time);

oldtime = newtime;

}

// never gets here

return TRUE;

}

voidQcommon_Frame (int msec)

{

char *s;

int time_before, time_between, time_after;

// [some details omitted...]

// Handle fixed-time mode and time scaling.

if (fixedtime->value)

msec = fixedtime->value;

else if (timescale->value)

{

msec *= timescale->value;

if (msec < 1)

msec = 1;

}

// Service the in-game console.

do

{

s = Sys_ConsoleInput ();

if (s)

Cbuf_AddText (va("%s\n",s));

} while (s);

Cbuf_Execute ();

7.7. Networked Multiplayer Game Loops