quakeforge/libs/gamecode/engine/pr_resolve.c

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/*
pr_edict.c
entity dictionary
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
static __attribute__ ((used)) const char rcsid[] =
"$Id$";
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include "QF/cmd.h"
#include "QF/crc.h"
#include "QF/cvar.h"
#include "QF/hash.h"
#include "QF/progs.h"
#include "QF/qdefs.h"
#include "QF/qendian.h"
#include "QF/quakefs.h"
#include "QF/sys.h"
#include "QF/zone.h"
#include "QF/va.h"
#include "compat.h"
ddef_t *
PR_GlobalAtOfs (progs_t * pr, int ofs)
{
ddef_t *def;
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unsigned int i;
for (i = 0; i < pr->progs->numglobaldefs; i++) {
def = &pr->pr_globaldefs[i];
if (def->ofs == ofs)
return def;
}
return NULL;
}
ddef_t *
PR_FieldAtOfs (progs_t * pr, int ofs)
{
ddef_t *def;
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unsigned int i;
for (i = 0; i < pr->progs->numfielddefs; i++) {
def = &pr->pr_fielddefs[i];
if (def->ofs == ofs)
return def;
}
return NULL;
}
ddef_t *
PR_FindField (progs_t * pr, const char *name)
{
return Hash_Find (pr->field_hash, name);
}
ddef_t *
PR_FindGlobal (progs_t * pr, const char *name)
{
return Hash_Find (pr->global_hash, name);
}
dfunction_t *
PR_FindFunction (progs_t * pr, const char *name)
{
return Hash_Find (pr->function_hash, name);
}
void
PR_Undefined (progs_t *pr, const char *type, const char *name)
{
PR_Error (pr, "undefined %s %s", type, name);
}
int
PR_ResolveGlobals (progs_t *pr)
{
const char *sym;
ddef_t *def;
int i;
if (pr->progs->version == PROG_ID_VERSION) {
pr->pr_return = &pr->pr_globals[OFS_RETURN];
pr->pr_params[0] = &pr->pr_globals[OFS_PARM0];
pr->pr_params[1] = &pr->pr_globals[OFS_PARM1];
pr->pr_params[2] = &pr->pr_globals[OFS_PARM2];
pr->pr_params[3] = &pr->pr_globals[OFS_PARM3];
pr->pr_params[4] = &pr->pr_globals[OFS_PARM4];
pr->pr_params[5] = &pr->pr_globals[OFS_PARM5];
pr->pr_params[6] = &pr->pr_globals[OFS_PARM6];
pr->pr_params[7] = &pr->pr_globals[OFS_PARM7];
pr->pr_param_size = OFS_PARM1 - OFS_PARM0;
} else {
if (!(def = PR_FindGlobal (pr, sym = ".return")))
goto error;
pr->pr_return = &pr->pr_globals[def->ofs];
for (i = 0; i < MAX_PARMS; i++) {
if (!(def = PR_FindGlobal (pr, sym = va(".param_%d", i))))
goto error;
pr->pr_params[i] = &pr->pr_globals[def->ofs];
}
if (!(def = PR_FindGlobal (pr, sym = ".param_size")))
goto error;
pr->pr_param_size = G_INT (pr, def->ofs);
}
memcpy (pr->pr_real_params, pr->pr_params, sizeof (pr->pr_params));
if (!pr->globals.time) {
if ((def = PR_FindGlobal (pr, "time")))
pr->globals.time = &G_FLOAT (pr, def->ofs);
}
if (!pr->globals.self) {
if ((def = PR_FindGlobal (pr, ".self"))
|| (def = PR_FindGlobal (pr, "self")))
pr->globals.self = &G_INT (pr, def->ofs);
}
if (pr->fields.nextthink == -1)
if ((def = PR_FindField (pr, "nextthink")))
pr->fields.nextthink = def->ofs;
if (pr->fields.frame == -1)
if ((def = PR_FindField (pr, "frame")))
pr->fields.frame = def->ofs;
if (pr->fields.think == -1)
if ((def = PR_FindField (pr, "think")))
pr->fields.think = def->ofs;
return 1;
error:
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Sys_Printf ("%s: undefined symbol: %s\n", pr->progs_name, sym);
return 0;
}
int
PR_AccessField (progs_t *pr, const char *name, etype_t type,
const char *file, int line)
{
ddef_t *def = PR_FindField (pr, name);
if (!def)
PR_Error (pr, "undefined field %s accessed at %s:%d", name, file, line);
if (def->type != type)
PR_Error (pr, "bad type access to %s as %s (should be %s) at %s:%d",
name, pr_type_name[type], pr_type_name[def->type],
file, line);
return def->ofs;
}