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, 15 insertions, 2 deletions

diff --git a/apps/plugins/sdl/include/SDL_config_rockbox.h b/apps/plugins/sdl/include/SDL_config_rockbox.h
index e268a73a8b..2b7f9a6793 100644
--- a/apps/plugins/sdl/include/SDL_config_rockbox.h
+++ b/apps/plugins/sdl/include/SDL_config_rockbox.h
@@ -38,7 +38,8 @@
 
 //#define COMBINED_SDL
 
-/* games will use this sample rate */
+/* "recommended" sample rate for Rockbox. Games should use this by
+ * default unless necessary to do otherwise. */
 #ifdef SIMULATOR
 #define RB_SAMPR SAMPR_44
 #else
@@ -57,6 +58,7 @@
 /* woot */
 #define SDL_AUDIO_DRIVER_ROCKBOX 1
 #define SDL_THREAD_ROCKBOX       1
+#undef  SDL_THREAD_PTHREAD
 #define SDL_TIMER_ROCKBOX        1
 #define SDL_VIDEO_DRIVER_ROCKBOX 1
 
@@ -78,6 +80,10 @@
 #define HAVE_FREE         1
 #define HAVE_REALLOC      1
 #define HAVE_QSORT        1
+#define HAVE_STRLEN       1
+#define HAVE_STRLCPY      1
+#define HAVE_STRCMP       1
+#define HAVE_STRNCMP      1
 
 #undef strdup
 
@@ -116,6 +122,7 @@
 #define floor floor_wrapper
 #define fmod fmod_wrapper
 #define free tlsf_free
+#define fscanf fscanf_wrapper
 #define getchar() rb->sleep(2*HZ)
 #define getenv SDL_getenv
 #define log rb_log
@@ -146,6 +153,7 @@
 #define strcpy strcpy_wrapper
 #define strdup strdup_wrapper
 #define strerror(x) "error"
+#define strlcpy rb->strlcpy
 #define strlen rb->strlen
 #define strncasecmp rb->strncasecmp
 #define strncat rb->strlcat /* hack */
@@ -163,8 +171,12 @@
 #define vsnprintf rb->vsnprintf
 #define vsprintf vsprintf_wrapper
 
+// use Rockbox's string routines
+#define SDL_memcpy memcpy
+#define SDL_memcmp memcmp
+
 #define M_PI 3.14159265358979323846
-#define EOF 0xff
+#define EOF (-1)
 
 #define LOAD_XPM
 #define MID_MUSIC
@@ -194,6 +206,7 @@ int vprintf(const char *fmt, va_list ap);
 void fatal(char *fmt, ...);
 void rb_exit(int rc);
 void rbsdl_atexit(void (*)(void));
+float atof_wrapper (char *str);
 
 /* speed */
 static inline uint16_t readLE16(void *addr)