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quakeforge/libs/gamecode/engine/pr_edict.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__ ((unused)) 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/cbuf.h"
#include "QF/crc.h"
#include "QF/cvar.h"
#include "QF/dstring.h"
#include "QF/hash.h"
#include "QF/idparse.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"
cvar_t *pr_boundscheck;
cvar_t *pr_deadbeef_ents;
cvar_t *pr_deadbeef_locals;
int pr_type_size[ev_type_count] = {
1, // ev_void
1, // ev_string
1, // ev_float
3, // ev_vector
1, // ev_entity
1, // ev_field
1, // ev_func
1, // ev_pointer
4, // ev_quaternion
1, // ev_integer
1, // ev_uinteger
0, // ev_short value in opcode
0, // ev_struct variable
0, // ev_object variable
0, // ev_class variable
2, // ev_sel
0, // ev_array variable
};
const char *pr_type_name[ev_type_count] = {
"void",
"string",
"float",
"vector",
"entity",
"field",
"function",
"pointer",
"quaternion",
"integer",
"uinteger",
"short",
"struct",
"object",
"Class",
"SEL",
"array",
};
/*
ED_ClearEdict
Sets everything to NULL
*/
void
ED_ClearEdict (progs_t *pr, edict_t *e, int val)
{
unsigned int i;
if (NUM_FOR_EDICT(pr,e)<*pr->reserved_edicts)
Sys_Printf("clearing reserved edict %d\n", NUM_FOR_EDICT(pr,e));
for (i=0; i < pr->progs->entityfields; i++)
e->v[i].integer_var = val;
e->free = false;
}
/*
ED_Alloc
Either finds a free edict, or allocates a new one.
Try to avoid reusing an entity that was recently freed, because it
can cause the client to think the entity morphed into something else
instead of being removed and recreated, which can cause interpolated
angles and bad trails.
*/
edict_t *
ED_Alloc (progs_t *pr)
{
int i;
edict_t *e;
int start = pr->reserved_edicts ? *pr->reserved_edicts : 0;
int max_edicts = pr->pr_edictareasize / pr->pr_edict_size;
for (i = start + 1; i < *(pr)->num_edicts; i++) {
e = EDICT_NUM (pr, i);
// the first couple seconds of server time can involve a lot of
// freeing and allocating, so relax the replacement policy
if (e->free && (e->freetime < 2 || *(pr)->time - e->freetime > 0.5)) {
ED_ClearEdict (pr, e, 0);
return e;
}
}
if (i == max_edicts) {
Sys_Printf ("WARNING: ED_Alloc: no free edicts\n");
i--; // step on whatever is the last edict
e = EDICT_NUM (pr, i);
if (pr->unlink)
pr->unlink (e);
} else
(*(pr)->num_edicts)++;
e = EDICT_NUM (pr, i);
ED_ClearEdict (pr, e, 0);
return e;
}
/*
ED_Free
Marks the edict as free
FIXME: walk all entities and NULL out references to this entity
*/
void
ED_Free (progs_t *pr, edict_t *ed)
{
if (pr->unlink)
pr->unlink (ed); // unlink from world bsp
if (pr_deadbeef_ents->int_val) {
ED_ClearEdict (pr, ed, 0xdeadbeef);
} else {
if (pr->free_edict)
pr->free_edict (pr, ed);
else
ED_ClearEdict (pr, ed, 0);
}
ed->free = true;
ed->freetime = *(pr)->time;
}
//===========================================================================
/*
PR_ValueString
Returns a string describing *data in a type-specific manner
*/
static const char *
PR_ValueString (progs_t *pr, etype_t type, pr_type_t *val)
{
static char line[256];
ddef_t *def;
dfunction_t *f;
type &= ~DEF_SAVEGLOBAL;
switch (type) {
case ev_string:
if (PR_StringValid (pr, val->string_var))
snprintf (line, sizeof (line), "%s",
PR_GetString (pr, val->string_var));
else
strcpy (line, "*** invalid ***");
break;
case ev_entity:
snprintf (line, sizeof (line), "entity %i",
NUM_FOR_BAD_EDICT (pr, PROG_TO_EDICT (pr, val->entity_var)));
break;
case ev_func:
if (val->func_var < 0 || val->func_var >= pr->progs->numfunctions)
snprintf (line, sizeof (line), "INVALID:%d", val->func_var);
else if (!val->func_var)
return "NULL";
else {
f = pr->pr_functions + val->func_var;
snprintf (line, sizeof (line), "%s()",
PR_GetString (pr, f->s_name));
}
break;
case ev_field:
def = ED_FieldAtOfs (pr, val->integer_var);
snprintf (line, sizeof (line), ".%s",
PR_GetString (pr, def->s_name));
break;
case ev_void:
strcpy (line, "void");
break;
case ev_float:
snprintf (line, sizeof (line), "%g", val->float_var);
break;
case ev_vector:
snprintf (line, sizeof (line), "'%g %g %g'",
val->vector_var[0], val->vector_var[1],
val->vector_var[2]);
break;
case ev_pointer:
snprintf (line, sizeof (line), "[$%x]", val->integer_var);
break;
case ev_quaternion:
snprintf (line, sizeof (line), "'%g %g %g %g'",
val->vector_var[0], val->vector_var[1],
val->vector_var[2], val->vector_var[3]);
break;
case ev_integer:
snprintf (line, sizeof (line), "%d", val->integer_var);
break;
case ev_uinteger:
snprintf (line, sizeof (line), "$%08x", val->uinteger_var);
break;
case ev_sel:
snprintf (line, sizeof (line), "(SEL) %s",
PR_GetString (pr, val->string_var));
break;
default:
snprintf (line, sizeof (line), "bad type %i", type);
break;
}
return line;
}
/*
PR_GlobalString
Returns a string with a description and the contents of a global
*/
dstring_t *
PR_GlobalString (progs_t *pr, int ofs, etype_t type)
{
ddef_t *def = NULL;
static dstring_t *line = NULL;
const char *s;
if (!line)
line = dstring_newstr();
if (type == ev_short) {
dsprintf (line, "%04x", (short) ofs);
return line;
}
if (pr_debug->int_val && pr->debug)
def = PR_Get_Local_Def (pr, ofs);
if (!def)
def = ED_GlobalAtOfs (pr, ofs);
if (!def && type == ev_void)
dsprintf (line, "[$%x]", ofs);
else {
const char *name = "?";
const char *oi = "";
if (def) {
if (type == ev_void)
type = def->type;
name = PR_GetString (pr, def->s_name);
if (type != (etype_t) (def->type & ~DEF_SAVEGLOBAL))
oi = "?";
}
if (ofs > pr->globals_size)
s = "Out of bounds";
else
s = PR_ValueString (pr, type, &pr->pr_globals[ofs]);
if (strequal(name, "IMMEDIATE") || strequal(name, ".imm")) {
if (type == ev_string)
dsprintf (line, "\"%s\"", s);
else
dsprintf (line, "%s", s);
} else if (strequal(name, "?"))
dsprintf (line, "[$%x](%08x)", ofs,
pr->pr_globals[ofs].integer_var);
else {
if (type == ev_func)
dsprintf (line, "%s%s", name, oi);
else
dsprintf (line, "%s%s(%s)", name, oi, s);
}
}
return line;
}
dstring_t *
PR_GlobalStringNoContents (progs_t *pr, int ofs, etype_t type)
{
static dstring_t *line = NULL;
ddef_t *def = NULL;
if (!line)
line = dstring_newstr();
if (type == ev_short) {
dsprintf (line, "%x", (short) ofs);
return line;
}
if (pr_debug->int_val && pr->debug)
def = PR_Get_Local_Def (pr, ofs);
if (!def)
def = ED_GlobalAtOfs (pr, ofs);
if (!def)
dsprintf (line, "[$%x]", ofs);
else
dsprintf (line, "%s", PR_GetString (pr, def->s_name));
return line;
}
/*
ED_Print
For debugging
*/
void
ED_Print (progs_t *pr, edict_t *ed)
{
int l;
unsigned int i;
char *name;
int type;
ddef_t *d;
pr_type_t *v;
if (ed->free) {
Sys_Printf ("FREE\n");
return;
}
Sys_Printf ("\nEDICT %i:\n", NUM_FOR_BAD_EDICT (pr, ed));
for (i = 0; i < pr->progs->numfielddefs; i++) {
d = &pr->pr_fielddefs[i];
if (!d->s_name) // null field def (probably 1st)
continue;
name = PR_GetString (pr, d->s_name);
if (name[strlen (name) - 2] == '_')
continue; // skip _x, _y, _z vars
v = ed->v + d->ofs;
// if the value is still all 0, skip the field
type = d->type & ~DEF_SAVEGLOBAL;
switch (type) {
case ev_entity:
case ev_integer:
case ev_uinteger:
case ev_pointer:
case ev_func:
case ev_field:
if (!v->integer_var)
continue;
break;
case ev_sel:
if (!v[0].integer_var
&& !PR_GetString (pr, v[1].string_var)[0])
continue;
break;
case ev_string:
if (!PR_GetString (pr, v->string_var)[0])
continue;
break;
case ev_float:
if (!v->float_var)
continue;
break;
case ev_vector:
if (!v[0].float_var && !v[1].float_var && !v[2].float_var)
continue;
break;
default:
PR_Error (pr, "ED_Print: Unhandled type %d", type);
}
Sys_Printf ("%s", name);
l = strlen (name);
while (l++ < 15)
Sys_Printf (" ");
Sys_Printf ("%s\n", PR_ValueString (pr, d->type, v));
}
}
void
ED_PrintNum (progs_t *pr, int ent)
{
ED_Print (pr, EDICT_NUM (pr, ent));
}
/*
ED_PrintEdicts
For debugging, prints all the entities in the current server
*/
void
ED_PrintEdicts (progs_t *pr, const char *fieldval)
{
int i;
int count;
ddef_t *def;
def = ED_FindField(pr, "classname");
if (fieldval && fieldval[0] && def) {
count = 0;
for (i = 0; i < *(pr)->num_edicts; i++)
if (strequal(fieldval,
E_GSTRING (pr, EDICT_NUM(pr, i), def->ofs))) {
ED_PrintNum (pr, i);
count++;
}
Sys_Printf ("%i entities\n", count);
} else {
for (i = 0; i < *(pr)->num_edicts; i++)
ED_PrintNum (pr, i);
Sys_Printf ("%i entities\n", *(pr)->num_edicts);
}
}
/*
ED_Count
For debugging
*/
void
ED_Count (progs_t *pr)
{
int i;
int active, models, solid, step, zombie;
ddef_t *solid_def;
ddef_t *model_def;
edict_t *ent;
solid_def = ED_FindField (pr, "solid");
model_def = ED_FindField (pr, "model");
active = models = solid = step = zombie = 0;
for (i = 0; i < *(pr)->num_edicts; i++) {
ent = EDICT_NUM (pr, i);
if (ent->free) {
if (*(pr)->time - ent->freetime <= 0.5)
zombie++;
continue;
}
active++;
if (solid_def && ent->v[solid_def->ofs].float_var)
solid++;
if (model_def && ent->v[model_def->ofs].float_var)
models++;
}
Sys_Printf ("num_edicts:%3i\n", *(pr)->num_edicts);
Sys_Printf ("active :%3i\n", active);
Sys_Printf ("view :%3i\n", models);
Sys_Printf ("touch :%3i\n", solid);
Sys_Printf ("zombie :%3i\n", zombie);
}
edict_t *
EDICT_NUM (progs_t *pr, int n)
{
int offs = n * pr->pr_edict_size;
if (offs < 0 || n >= pr->pr_edictareasize)
PR_RunError (pr, "EDICT_NUM: bad number %i", n);
return PROG_TO_EDICT (pr, offs);
}
int
NUM_FOR_BAD_EDICT (progs_t *pr, edict_t *e)
{
int b;
b = (byte *) e - (byte *) * (pr)->edicts;
b = b / pr->pr_edict_size;
return b;
}
int
NUM_FOR_EDICT (progs_t *pr, edict_t *e)
{
int b;
b = NUM_FOR_BAD_EDICT (pr, e);
if (b && (b < 0 || b >= *(pr)->num_edicts))
PR_RunError (pr, "NUM_FOR_EDICT: bad pointer %d %p %p", b, e, * (pr)->edicts);
return b;
}
qboolean
PR_EdictValid (progs_t *pr, int e)
{
if (e < 0 || e >= pr->pr_edictareasize)
return false;
if (e % pr->pr_edict_size)
return false;
return true;
}
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