quakeforge/libs/util/gib_function.c
Brian Koropoff 876eaa467c Added a few useful builtins and began adding GIB hooks into quakeworld.
The player global branch variable is now updated with useful information
and the location.get builtin is available to return the current location
of the player based on loc files.  Fixed a bug with zooming out in zoom.gib.
2002-08-24 05:14:46 +00:00

148 lines
3.2 KiB
C

/*
#FILENAME#
#DESCRIPTION#
Copyright (C) 2002 #AUTHOR#
Author: #AUTHOR#
Date: #DATE#
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
static const char rcsid[] =
"$Id$";
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include "QF/dstring.h"
#include "QF/hash.h"
#include "QF/cbuf.h"
#include "QF/gib_parse.h"
#include "QF/gib_buffer.h"
#include "QF/gib_function.h"
#include "QF/gib_vars.h"
#include "QF/va.h"
hashtab_t *gib_functions = 0;
/*
GIB_Function_New
Builds a new function struct and returns
a pointer to it.
*/
gib_function_t *
GIB_Function_New (void)
{
gib_function_t *new = calloc (1, sizeof (gib_function_t));
new->name = dstring_newstr();
new->program = dstring_newstr();
return new;
}
/*
Hashtable callbacks
*/
const char *
GIB_Function_Get_Key (void *ele, void *ptr)
{
return ((gib_function_t *)ele)->name->str;
}
void
GIB_Function_Free (void *ele, void *ptr)
{
gib_function_t *func = (gib_function_t *)ele;
dstring_delete (func->name);
dstring_delete (func->program);
}
/*
GIB_Function_Define
Sets the program text of a GIB function,
allocating one and adding it to the functions
hash if needed.
*/
void
GIB_Function_Define (const char *name, const char *program)
{
gib_function_t *func;
if (!gib_functions)
gib_functions = Hash_NewTable (1024, GIB_Function_Get_Key, GIB_Function_Free, 0);
func = Hash_Find(gib_functions, name);
if (func)
dstring_clearstr (func->program);
else {
func = GIB_Function_New ();
dstring_appendstr (func->name, name);
Hash_Add (gib_functions, func);
}
dstring_appendstr (func->program, program);
}
/*
GIB_Function_Find
Looks up a function in the function hash
and returns a pointer to it on success,
0 otherwise
*/
gib_function_t *
GIB_Function_Find (const char *name)
{
if (!gib_functions)
return 0;
return (gib_function_t *) Hash_Find (gib_functions, name);
}
/*
GIB_Function_Execute
Creates a new buffer on the current stack
and copies the program text of a function
into it. Also sets local variables on the
buffer for all arguments passed to the
function
*/
void
GIB_Function_Execute (gib_function_t *func)
{
cbuf_t *sub = Cbuf_New (&gib_interp);
int i;
Cbuf_AddText (sub, func->program->str);
if (cbuf_active->down)
Cbuf_DeleteStack (cbuf_active->down);
cbuf_active->down = sub;
sub->up = cbuf_active;
cbuf_active->state = CBUF_STATE_STACK;
for (i = 0; i < cbuf_active->args->argc; i++)
GIB_Var_Set_Local (sub, va("%i", i), cbuf_active->args->argv[i]->str);
GIB_Var_Set_Local (sub, "argc", va("%i", cbuf_active->args->argc));
}