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

1 files changed, 158 insertions, 0 deletions

diff --git a/apps/plugins/sdl/progs/quake/wad.c b/apps/plugins/sdl/progs/quake/wad.c
new file mode 100644
index 0000000000..c84f72c6d5
--- /dev/null
+++ b/apps/plugins/sdl/progs/quake/wad.c
@@ -0,0 +1,158 @@
+/*
+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.
+
+*/
+// wad.c
+
+#include "quakedef.h"
+
+int                     wad_numlumps;
+lumpinfo_t      *wad_lumps;
+byte            *wad_base;
+
+void SwapPic (qpic_t *pic);
+
+/*
+==================
+W_CleanupName
+
+Lowercases name and pads with spaces and a terminating 0 to the length of
+lumpinfo_t->name.
+Used so lumpname lookups can proceed rapidly by comparing 4 chars at a time
+Space padding is so names can be printed nicely in tables.
+Can safely be performed in place.
+==================
+*/
+void W_CleanupName (char *in, char *out)
+{
+        int             i;
+        int             c;
+        
+        for (i=0 ; i<16 ; i++ )
+        {
+                c = in[i];
+                if (!c)
+                        break;
+                        
+                if (c >= 'A' && c <= 'Z')
+                        c += ('a' - 'A');
+                out[i] = c;
+        }
+        
+        for ( ; i< 16 ; i++ )
+                out[i] = 0;
+}
+
+
+
+/*
+====================
+W_LoadWadFile
+====================
+*/
+void W_LoadWadFile (char *filename)
+{
+        lumpinfo_t              *lump_p;
+        wadinfo_t               *header;
+        unsigned                i;
+        int                             infotableofs;
+        
+        wad_base = COM_LoadHunkFile (filename);
+        if (!wad_base)
+                Sys_Error ("W_LoadWadFile: couldn't load %s", filename);
+
+        header = (wadinfo_t *)wad_base;
+        
+        if (header->identification[0] != 'W'
+        || header->identification[1] != 'A'
+        || header->identification[2] != 'D'
+        || header->identification[3] != '2')
+                Sys_Error ("Wad file %s doesn't have WAD2 id\n",filename);
+                
+        wad_numlumps = LittleLong(header->numlumps);
+        infotableofs = LittleLong(header->infotableofs);
+        wad_lumps = (lumpinfo_t *)(wad_base + infotableofs);
+        
+        for (i=0, lump_p = wad_lumps ; i<wad_numlumps ; i++,lump_p++)
+        {
+                lump_p->filepos = LittleLong(lump_p->filepos);
+                lump_p->size = LittleLong(lump_p->size);
+                W_CleanupName (lump_p->name, lump_p->name);
+                if (lump_p->type == TYP_QPIC)
+                        SwapPic ( (qpic_t *)(wad_base + lump_p->filepos));
+        }
+}
+
+
+/*
+=============
+W_GetLumpinfo
+=============
+*/
+lumpinfo_t      *W_GetLumpinfo (char *name)
+{
+        int             i;
+        lumpinfo_t      *lump_p;
+        char    clean[16];
+        
+        W_CleanupName (name, clean);
+        
+        for (lump_p=wad_lumps, i=0 ; i<wad_numlumps ; i++,lump_p++)
+        {
+                if (!strcmp(clean, lump_p->name))
+                        return lump_p;
+        }
+        
+        Sys_Error ("W_GetLumpinfo: %s not found", name);
+        return NULL;
+}
+
+void *W_GetLumpName (char *name)
+{
+        lumpinfo_t      *lump;
+        
+        lump = W_GetLumpinfo (name);
+        
+        return (void *)(wad_base + lump->filepos);
+}
+
+void *W_GetLumpNum (int num)
+{
+        lumpinfo_t      *lump;
+        
+        if (num < 0 || num > wad_numlumps)
+                Sys_Error ("W_GetLumpNum: bad number: %i", num);
+                
+        lump = wad_lumps + num;
+        
+        return (void *)(wad_base + lump->filepos);
+}
+
+/*
+=============================================================================
+
+automatic byte swapping
+
+=============================================================================
+*/
+
+void SwapPic (qpic_t *pic)
+{
+        pic->width = LittleLong(pic->width);
+        pic->height = LittleLong(pic->height);  
+}