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, 123 insertions, 0 deletions

diff --git a/apps/plugins/sdl/progs/quake/cmd.h b/apps/plugins/sdl/progs/quake/cmd.h
new file mode 100644
index 0000000000..d4a0dd9b63
--- /dev/null
+++ b/apps/plugins/sdl/progs/quake/cmd.h
@@ -0,0 +1,123 @@
+/*
+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.
+
+*/
+
+// cmd.h -- Command buffer and command execution
+
+//===========================================================================
+
+/*
+
+Any number of commands can be added in a frame, from several different sources.
+Most commands come from either keybindings or console line input, but remote
+servers can also send across commands and entire text files can be execed.
+
+The + command line options are also added to the command buffer.
+
+The game starts with a Cbuf_AddText ("exec quake.rc\n"); Cbuf_Execute ();
+
+*/
+
+
+void Cbuf_Init (void);
+// allocates an initial text buffer that will grow as needed
+
+void Cbuf_AddText (char *text);
+// as new commands are generated from the console or keybindings,
+// the text is added to the end of the command buffer.
+
+void Cbuf_InsertText (char *text);
+// when a command wants to issue other commands immediately, the text is
+// inserted at the beginning of the buffer, before any remaining unexecuted
+// commands.
+
+void Cbuf_Execute (void);
+// Pulls off \n terminated lines of text from the command buffer and sends
+// them through Cmd_ExecuteString.  Stops when the buffer is empty.
+// Normally called once per frame, but may be explicitly invoked.
+// Do not call inside a command function!
+
+//===========================================================================
+
+/*
+
+Command execution takes a null terminated string, breaks it into tokens,
+then searches for a command or variable that matches the first token.
+
+Commands can come from three sources, but the handler functions may choose
+to dissallow the action or forward it to a remote server if the source is
+not apropriate.
+
+*/
+
+typedef void (*xcommand_t) (void);
+
+typedef int cmd_source_t;
+
+enum
+{
+        src_client,             // came in over a net connection as a clc_stringcmd
+                                        // host_client will be valid during this state.
+        src_command             // from the command buffer
+};
+
+extern  cmd_source_t    cmd_source;
+
+void    Cmd_Init (void);
+
+void    Cmd_AddCommand (char *cmd_name, xcommand_t function);
+// called by the init functions of other parts of the program to
+// register commands and functions to call for them.
+// The cmd_name is referenced later, so it should not be in temp memory
+
+qboolean Cmd_Exists (char *cmd_name);
+// used by the cvar code to check for cvar / command name overlap
+
+char    *Cmd_CompleteCommand (char *partial);
+// attempts to match a partial command for automatic command line completion
+// returns NULL if nothing fits
+
+int             Cmd_Argc (void);
+char    *Cmd_Argv (int arg);
+char    *Cmd_Args (void);
+// The functions that execute commands get their parameters with these
+// functions. Cmd_Argv () will return an empty string, not a NULL
+// if arg > argc, so string operations are allways safe.
+
+int Cmd_CheckParm (char *parm);
+// Returns the position (1 to argc-1) in the command's argument list
+// where the given parameter apears, or 0 if not present
+
+void Cmd_TokenizeString (char *text);
+// Takes a null terminated string.  Does not need to be /n terminated.
+// breaks the string up into arg tokens.
+
+void    Cmd_ExecuteString (char *text, cmd_source_t src);
+// Parses a single line of text into arguments and tries to execute it.
+// The text can come from the command buffer, a remote client, or stdin.
+
+void    Cmd_ForwardToServer (void);
+// adds the current command line as a clc_stringcmd to the client message.
+// things like godmode, noclip, etc, are commands directed to the server,
+// so when they are typed in at the console, they will need to be forwarded.
+
+void    Cmd_Print (char *text);
+// used by command functions to send output to either the graphics console or
+// passed as a print message to the client
+