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quakeforge/libs/gamecode/builtins/pr_cmds.c
Bill Currie 587ac5670b using R_FLOAT for setting individual fields of the return vector ain't so 
good a thing to do.
2002-07-25 14:58:02 +00:00

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/*
pr_cmds.c
(description)
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
*/
static const char rcsid[] =
"$Id$";
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_ERRNO_H
# include <errno.h>
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdlib.h>
#include "QF/clip_hull.h"
#include "QF/cmd.h"
#include "QF/cvar.h"
#include "QF/mathlib.h"
#include "QF/msg.h"
#include "QF/progs.h"
#include "QF/sys.h"
#include "QF/va.h"
#include "QF/zone.h"
#include "compat.h"
const char *pr_gametype = "";
/* BUILT-IN FUNCTIONS */
// FIXME: Hunk_TempAlloc, Sys_Printf, Cvar_*, PR_SetString, PR_RunError, ED_PrintEdicts, PF_traceon, PF_traceoff, ED_PrintNum, PR_FindBuiltin isn't threadsafe/reentrant
const char *
PF_VarString (progs_t *pr, int first)
{
char *out;
int len, i;
for (len = 0, i = first; i < pr->pr_argc; i++)
len += strlen (G_STRING (pr, (OFS_PARM0 + i * 3)));
out = Hunk_TempAlloc (len + 1);
out[0] = 0;
for (i = first; i < pr->pr_argc; i++)
strcat (out, G_STRING (pr, (OFS_PARM0 + i * 3)));
return out;
}
/*
PF_normalize
vector normalize(vector)
*/
void
PF_normalize (progs_t *pr)
{
float new;
float *value1;
vec3_t newvalue;
value1 = P_VECTOR (pr, 0);
new = value1[0] * value1[0] + value1[1] * value1[1] + value1[2] *
value1[2];
new = sqrt (new);
if (new == 0)
newvalue[0] = newvalue[1] = newvalue[2] = 0;
else {
new = 1 / new;
newvalue[0] = value1[0] * new;
newvalue[1] = value1[1] * new;
newvalue[2] = value1[2] * new;
}
VectorCopy (newvalue, R_VECTOR (pr));
}
/*
PF_vlen
scalar vlen(vector)
*/
void
PF_vlen (progs_t *pr)
{
float new;
float *value1;
value1 = P_VECTOR (pr, 0);
new = value1[0] * value1[0] + value1[1] * value1[1] + value1[2] *
value1[2];
new = sqrt (new);
R_FLOAT (pr) = new;
}
/*
PF_vectoyaw
float vectoyaw(vector)
*/
void
PF_vectoyaw (progs_t *pr)
{
float yaw;
float *value1;
value1 = P_VECTOR (pr, 0);
if (value1[1] == 0 && value1[0] == 0)
yaw = 0;
else {
yaw = (int) (atan2 (value1[1], value1[0]) * 180 / M_PI);
if (yaw < 0)
yaw += 360;
}
R_FLOAT (pr) = yaw;
}
/*
PF_vectoangles
vector vectoangles(vector)
*/
void
PF_vectoangles (progs_t *pr)
{
float forward, pitch, yaw;
float *value1;
value1 = P_VECTOR (pr, 0);
if (value1[1] == 0 && value1[0] == 0) {
yaw = 0;
if (value1[2] > 0)
pitch = 90;
else
pitch = 270;
} else {
yaw = (int) (atan2 (value1[1], value1[0]) * 180 / M_PI);
if (yaw < 0)
yaw += 360;
forward = sqrt (value1[0] * value1[0] + value1[1] * value1[1]);
pitch = (int) (atan2 (value1[2], forward) * 180 / M_PI);
if (pitch < 0)
pitch += 360;
}
R_VECTOR (pr)[0] = pitch;
R_VECTOR (pr)[1] = yaw;
R_VECTOR (pr)[2] = 0;
}
/*
PF_Random
Returns a number from 0<= num < 1
random()
*/
void
PF_random (progs_t *pr)
{
float num;
num = (rand () & 0x7fff) / ((float) 0x7fff);
R_FLOAT (pr) = num;
}
/*
PF_break
break()
*/
void
PF_break (progs_t *pr)
{
Sys_Printf ("break statement\n");
*(int *) -4 = 0; // dump to debugger
// PR_RunError (pr, "break statement");
}
#if 0
/*
PF_localcmd
Sends text to the host's execution buffer
localcmd (string)
*/
void
PF_localcmd (progs_t *pr)
{
const char *str;
str = P_STRING (pr, 0);
Cbuf_AddText (str);
}
#endif
/*
PF_cvar
float cvar (string)
*/
void
PF_cvar (progs_t *pr)
{
const char *str;
str = P_STRING (pr, 0);
R_FLOAT (pr) = Cvar_VariableValue (str);
}
/*
PF_cvar_set
float cvar (string)
*/
void
PF_cvar_set (progs_t *pr)
{
const char *var_name, *val;
cvar_t *var;
var_name = P_STRING (pr, 0);
val = P_STRING (pr, 1);
var = Cvar_FindVar (var_name);
if (!var)
var = Cvar_FindAlias (var_name);
if (!var) {
Sys_Printf ("PF_cvar_set: variable %s not found\n", var_name);
return;
}
Cvar_Set (var, val);
}
void
PF_fabs (progs_t *pr)
{
float v;
v = P_FLOAT (pr, 0);
R_FLOAT (pr) = fabs (v);
}
// entity (entity start, .string field, string match) find = #5;
void
PF_Find (progs_t *pr)
{
const char *s = 0, *t; // ev_string
int i; // ev_vector
int e, f;
etype_t type;
ddef_t *field_def;
edict_t *ed;
e = P_EDICTNUM (pr, 0);
f = P_INT (pr, 1);
field_def = ED_FieldAtOfs (pr, f);
if (!field_def)
PR_RunError (pr, "PF_Find: bad search field");
type = field_def->type & ~DEF_SAVEGLOBAL;
if (type == ev_string) {
s = P_STRING (pr, 2);
if (!s)
PR_RunError (pr, "PF_Find: bad search string");
}
for (e++; e < *pr->num_edicts; e++) {
ed = EDICT_NUM (pr, e);
if (ed->free)
continue;
switch (type) {
case ev_string:
t = E_STRING (pr, ed, f);
if (!t)
continue;
if (strcmp (t, s))
continue;
RETURN_EDICT (pr, ed);
return;
case ev_float:
if (P_FLOAT (pr, 2) != E_FLOAT (ed, f))
continue;
RETURN_EDICT (pr, ed);
return;
case ev_vector:
for (i = 0; i <= 2; i++)
if (P_FLOAT (pr, 2 + i) != E_FLOAT (ed, f + i))
continue;
RETURN_EDICT (pr, ed);
return;
case ev_integer:
case ev_entity:
if (P_INT (pr, 2) != E_INT (ed, f))
continue;
RETURN_EDICT (pr, ed);
return;
default:
PR_Error (pr, "PF_Find: unsupported search field");
}
}
RETURN_EDICT (pr, *pr->edicts);
}
void
PF_coredump (progs_t *pr)
{
ED_PrintEdicts (pr, "");
}
void
PF_traceon (progs_t *pr)
{
pr->pr_trace = true;
}
void
PF_traceoff (progs_t *pr)
{
pr->pr_trace = false;
}
void
PF_eprint (progs_t *pr)
{
ED_PrintNum (pr, P_EDICTNUM (pr, 0));
}
void
PF_dprint (progs_t *pr)
{
Sys_Printf ("%s", PF_VarString (pr, 0));
}
void
PF_rint (progs_t *pr)
{
float f;
f = P_FLOAT (pr, 0);
if (f > 0)
R_FLOAT (pr) = (int) (f + 0.5);
else
R_FLOAT (pr) = (int) (f - 0.5);
}
void
PF_floor (progs_t *pr)
{
R_FLOAT (pr) = floor (P_FLOAT (pr, 0));
}
void
PF_ceil (progs_t *pr)
{
R_FLOAT (pr) = ceil (P_FLOAT (pr, 0));
}
/*
PF_nextent
entity nextent(entity)
*/
void
PF_nextent (progs_t *pr)
{
int i;
edict_t *ent;
i = P_EDICTNUM (pr, 0);
while (1) {
i++;
if (i == *pr->num_edicts) {
RETURN_EDICT (pr, *pr->edicts);
return;
}
ent = EDICT_NUM (pr, i);
if (!ent->free) {
RETURN_EDICT (pr, ent);
return;
}
}
}
// we assume that ints are smaller than floats
#ifdef FLT_MAX_10_EXP
# define STRING_BUF (FLT_MAX_10_EXP + 8)
#else
# define STRING_BUF 128
#endif
/*
PF_ftoi
integer (float f) ftoi
*/
void
PF_ftoi (progs_t *pr)
{
R_INT (pr) = P_FLOAT (pr, 0);
}
/*
PF_ftos
string (float f) ftos
*/
void
PF_ftos (progs_t *pr)
{
char string[STRING_BUF];
int i;
// trimming 0s idea thanks to Maddes
i = snprintf (string, sizeof (string), "%1.6f", P_FLOAT (pr, 0)) - 1;
for (; i > 0; i--) {
if (string[i] == '0')
string[i] = '\0';
else if (string[i] == '.') {
string[i] = '\0';
break;
} else
break;
}
RETURN_STRING (pr, string);
}
/*
PF_itof
float (integer i) itof
*/
void
PF_itof (progs_t *pr)
{
R_FLOAT (pr) = P_INT (pr, 0);
}
/*
PF_itos
string (integer i) itos
*/
void
PF_itos (progs_t *pr)
{
char string[STRING_BUF];
snprintf (string, sizeof (string), "%d", P_INT (pr, 0));
RETURN_STRING (pr, string);
}
/*
PF_stof
float (string s) stof
*/
void
PF_stof (progs_t *pr)
{
R_FLOAT (pr) = atof (P_STRING (pr, 0));
}
/*
PF_stoi
integer (string s) stoi
*/
void
PF_stoi (progs_t *pr)
{
R_INT (pr) = atoi (P_STRING (pr, 0));
}
/*
PF_stov
vector (string s) stov
*/
void
PF_stov (progs_t *pr)
{
float v[3] = {0, 0, 0};
sscanf (P_STRING (pr, 0), "'%f %f %f'", v, v + 1, v + 2);
RETURN_VECTOR (pr, v);
}
/*
PF_vtos
string (vector v) vtos
*/
void
PF_vtos (progs_t *pr)
{
char string[STRING_BUF * 3 + 5];
snprintf (string, sizeof (string), "'%5.1f %5.1f %5.1f'",
P_VECTOR (pr, 0)[0],
P_VECTOR (pr, 0)[1],
P_VECTOR (pr, 0)[2]);
RETURN_STRING (pr, string);
}
/*
PF_strlen
float(string s) strlen
*/
void
PF_strlen (progs_t *pr)
{
const char *s;
s = P_STRING (pr, 0);
R_FLOAT (pr) = strlen(s);
}
/*
PF_charcount
float(string char, string s) charcount
*/
void
PF_charcount (progs_t *pr)
{
char goal;
const char *s;
int count;
goal = (P_STRING (pr, 0))[0];
if (goal == '\0') {
R_FLOAT (pr) = 0;
return;
}
count = 0;
s = P_STRING (pr, 1);
while (*s) {
if (*s == goal)
count++;
s++;
}
R_FLOAT (pr) = count;
}
#if (INT_MAX == 2147483647) && (INT_MIN == -2147483648)
# define INT_WIDTH 11
#else /* I hope... */
# define INT_WIDTH 20
#endif
#define MAX_ARG 23
void
PF_sprintf (progs_t *pr)
{
char *format;
char *c; // current
char *out = 0;
char new_format[INT_WIDTH * 2 + 9]; // "%0-+ #." and conversion
int fmt_alternate, fmt_leadzero, fmt_leftjust, fmt_minwidth,
fmt_precision, fmt_signed, fmt_space, fmt_type, looping,
new_format_i, ret;
int curarg = 3, out_max = 32, out_size = 0;
format = P_STRING (pr, 0);
c = format;
out = malloc (out_max);
if (!out)
goto mallocerror;
while (*c) {
if (*c == '%' && c[1] != '%' && c[1] != 's') {
c++;
if (curarg > MAX_ARG)
goto maxargs;
// flags
looping = 1;
fmt_leadzero = 0;
fmt_leftjust = 0;
fmt_signed = 0;
fmt_space = 0;
fmt_alternate = 0;
while (looping) {
switch (*c) {
case '0': fmt_leadzero = 1; break;
case '-': fmt_leftjust = 1; break;
case '+': fmt_signed = 1; break;
case ' ': fmt_space = 1; break;
case '#': fmt_alternate = 1; break;
case '\0': goto endofstring;
default: looping = 0; continue;
}
c++;
}
// minimum field width
fmt_minwidth = 0;
if (*c >= '1' && *c <= '9')
while (*c >= '0' && *c <= '9') {
fmt_minwidth *= 10;
fmt_minwidth += *c - '0';
c++;
}
else if (*c == '*') {
fmt_minwidth = P_INT (pr, 0 + curarg);
curarg += 3;
}
// precision
fmt_precision = -1;
if (*c == '.') {
c++;
if (*c >= '0' && *c <= '9') {
fmt_precision = 0;
while (*c >= '0' && *c <= '9') {
fmt_precision *= 10;
fmt_precision += *c - '0';
c++;
}
} else if (*c == '*') {
fmt_precision = P_INT (pr, 0 + curarg);
curarg += 3;
}
}
if (!*c)
goto endofstring;
// length? Nope, not in QC
fmt_type = *c++;
// some preperation
if (fmt_precision < 0)
switch (fmt_type) {
case 'i': fmt_precision = 0; break;
case 'f': fmt_precision = 6; break;
case 'v': fmt_precision = 1; break;
}
// built the format string
new_format_i = 0;
new_format[new_format_i++] = '%';
if (fmt_leadzero) new_format[new_format_i++] = '0';
if (fmt_leftjust) new_format[new_format_i++] = '-';
if (fmt_signed) new_format[new_format_i++] = '+';
if (fmt_space) new_format[new_format_i++] = ' ';
if (fmt_alternate) new_format[new_format_i++] = '#';
if (fmt_minwidth)
if ((new_format_i += snprintf (new_format + new_format_i,
sizeof (new_format) -
new_format_i,
"%d", fmt_minwidth))
>= sizeof (new_format))
PR_Error (pr, "PF_sprintf: new_format overflowed?!");
if (fmt_type != 'i') {
new_format[new_format_i++] = '.';
if ((new_format_i += snprintf (new_format + new_format_i,
sizeof (new_format)
- new_format_i,
"%d", fmt_precision))
>= sizeof (new_format))
PR_Error (pr, "PF_sprintf: new_format overflowed?!");
}
switch (fmt_type) {
case 'i': new_format[new_format_i++] = 'd'; break;
case 'f':
case 'v': new_format[new_format_i++] = 'f'; break;
default: PR_Error (pr, "PF_sprintf: unknown type '%c'!", *c);
}
new_format[new_format_i++] = '\0';
switch (fmt_type) {
case 'i':
while ((ret = snprintf (&out[out_size], out_max - out_size,
new_format,
P_INT (pr, 0 + curarg)))
>= out_max - out_size) {
char *o;
out_max *= 2;
o = realloc (out, out_max);
if (!o)
goto mallocerror;
out = o;
}
out_size += ret;
curarg += 3;
break;
case 'f':
while ((ret = snprintf (&out[out_size], out_max - out_size,
new_format,
P_FLOAT (pr, 0 + curarg)))
>= out_max - out_size) {
char *o;
out_max *= 2;
o = realloc (out, out_max);
if (!o)
goto mallocerror;
out = o;
}
out_size += ret;
curarg += 3;
break;
case 'v': {
int i;
for (i = 0; i <= 2; i++) {
if (curarg > MAX_ARG)
goto maxargs;
while ((ret = snprintf (&out[out_size],
out_max - out_size, new_format,
P_FLOAT (pr, 0 +
curarg)))
>= out_max - out_size) {
char *o;
out_max *= 2;
o = realloc (out, out_max);
if (!o)
goto mallocerror;
out = o;
}
out_size += ret;
curarg++;
i++;
}
break;
}
}
} else if (*c == '%' && *(c + 1) == 's') {
char *s;
if (curarg > MAX_ARG)
goto maxargs;
s = P_STRING (pr, 0 + curarg);
while ((ret = snprintf (&out[out_size], out_max - out_size, "%s",
s))
>= out_max - out_size) {
char *o;
out_max *= 2;
o = realloc (out, out_max);
if (!o)
goto mallocerror;
out = o;
}
out_size += ret;
curarg += 3;
c += 2;
} else {
if (*c == '%')
c++;
if (out_size == out_max) {
char *o;
out_max *= 2;
o = realloc (out, out_max);
if (!o)
goto mallocerror;
out = o;
}
out[out_size] = *c;
out_size++;
c++;
}
}
if (out_size == out_max) {
char *o;
out_max *= 2;
o = realloc (out, out_max);
if (!o)
goto mallocerror;
out = o;
}
out[out_size] = '\0';
RETURN_STRING (pr, out);
free (out);
return;
mallocerror:
// if (errno == ENOMEM)
// hopefully we can free up some mem so it can be used during shutdown
// free (out);
PR_Error (pr, "PF_sprintf: memory allocation error!\n");
endofstring:
PR_Error (pr, "PF_sprintf: unexpected end of string!\n");
maxargs:
PR_Error (pr, "PF_sprintf: argument limit exceeded\n");
}
void
PR_gametype (progs_t *pr)
{
RETURN_STRING (pr, pr_gametype);
}
void
PR_Cmds_Init (progs_t *pr)
{
PR_AddBuiltin (pr, "break", PF_break, 6); // void () break
PR_AddBuiltin (pr, "random", PF_random, 7); // float () random
PR_AddBuiltin (pr, "normalize", PF_normalize, 9); // vector (vector v) normalize
PR_AddBuiltin (pr, "vlen", PF_vlen, 12); // float (vector v) vlen
PR_AddBuiltin (pr, "vectoyaw", PF_vectoyaw, 13); // float (vector v) vectoyaw
PR_AddBuiltin (pr, "find", PF_Find, 18); // entity (entity start, .(...) fld, ... match) find
PR_AddBuiltin (pr, "dprint", PF_dprint, 25); // void (string s) dprint
PR_AddBuiltin (pr, "coredump", PF_coredump, 28); // void () coredump
PR_AddBuiltin (pr, "traceon", PF_traceon, 29); // void () traceon
PR_AddBuiltin (pr, "traceoff", PF_traceoff, 30); // void () traceoff
PR_AddBuiltin (pr, "eprint", PF_eprint, 31); // void (entity e) eprint
PR_AddBuiltin (pr, "rint", PF_rint, 36); // float (float v) rint
PR_AddBuiltin (pr, "floor", PF_floor, 37); // float (float v) floor
PR_AddBuiltin (pr, "ceil", PF_ceil, 38); // float (float v) ceil
PR_AddBuiltin (pr, "fabs", PF_fabs, 43); // float (float f) fabs
PR_AddBuiltin (pr, "cvar", PF_cvar, 45); // float (string s) cvar
#if 0
PR_AddBuiltin (pr, "localcmd", PF_localcmd, 46); // void (string s) localcmd
#endif
PR_AddBuiltin (pr, "nextent", PF_nextent, 47); // entity (entity e) nextent
PR_AddBuiltin (pr, "vectoangles", PF_vectoangles, 51); // vector (vector v) vectoangles
PR_AddBuiltin (pr, "cvar_set", PF_cvar_set, 72); // void (string var, string val) cvar_set
PR_AddBuiltin (pr, "strlen", PF_strlen, 100); // float (string s) strlen
PR_AddBuiltin (pr, "charcount", PF_charcount, 101); // float (string goal, string s) charcount
PR_AddBuiltin (pr, "sprintf", PF_sprintf, 109); // string (...) sprintf
PR_AddBuiltin (pr, "ftos", PF_ftos, 26); // string (float f) ftos
PR_AddBuiltin (pr, "ftoi", PF_ftoi, 110); // integer (float f) ftoi
PR_AddBuiltin (pr, "itof", PF_itof, 111); // float (integer i) itof
PR_AddBuiltin (pr, "itos", PF_itos, 112); // string (integer i) itos
PR_AddBuiltin (pr, "stof", PF_stof, 81); // float (string s) stof
PR_AddBuiltin (pr, "stoi", PF_stoi, 113); // integer (string s) stoi
PR_AddBuiltin (pr, "stov", PF_stov, 114); // vector (string s) stov
PR_AddBuiltin (pr, "vtos", PF_vtos, 27); // string (vector v) vtos
PR_AddBuiltin (pr, "gametype", PR_gametype, 115); // string () gametype
};
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