Quake!

This ports id Software's Quake to run on the SDL plugin runtime. The
source code originated from id under the GPLv2 license. I used
https://github.com/ahefner/sdlquake as the base of my port.

Performance is, unsurprisingly, not on par with what you're probably
used to on PC. I average about 10FPS on ipod6g, but it's still
playable.

Sound works well enough, but in-game music is not supported. I've
written ARM assembly routines for the inner sound loop. Make sure you
turn the "brightness" all the way down, or colors will look funky.

To run, extract Quake's data files to /.rockbox/quake. Have fun!

Change-Id: I4285036e967d7f0722802d43cf2096c808ca5799

apps/plugins/sdl/progs/quake/sbar.h

@@ -0,0 +1,39 @@
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
+
+See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+// the status bar is only redrawn if something has changed, but if anything
+// does, the entire thing will be redrawn for the next vid.numpages frames.
+
+#define	SBAR_HEIGHT		24
+
+extern	int			sb_lines;			// scan lines to draw
+
+void Sbar_Init (void);
+
+void Sbar_Changed (void);
+// call whenever any of the client stats represented on the sbar changes
+
+void Sbar_Draw (void);
+// called every frame by screen
+
+void Sbar_IntermissionOverlay (void);
+// called each frame after the level has been completed
+
+void Sbar_FinaleOverlay (void);