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quakespasm/Quake/pr_cmds.c
Eric Wasylishen 2d394e7a29 PF_lightstyle: add bounds check to avoid clobbering memory 
Found when trying to load e1-4.bsp from https://github.com/plankatron/quakemash

git-svn-id: svn://svn.code.sf.net/p/quakespasm/code/trunk/quakespasm@1390 af15c1b1-3010-417e-b628-4374ebc0bcbd
2017-04-01 21:31:07 +00:00

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/*
Copyright (C) 1996-2001 Id Software, Inc.
Copyright (C) 2002-2009 John Fitzgibbons and others
Copyright (C) 2010-2014 QuakeSpasm developers
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.
*/
#include "quakedef.h"
#define STRINGTEMP_BUFFERS 16
#define STRINGTEMP_LENGTH 1024
static char pr_string_temp[STRINGTEMP_BUFFERS][STRINGTEMP_LENGTH];
static byte pr_string_tempindex = 0;
static char *PR_GetTempString (void)
{
return pr_string_temp[(STRINGTEMP_BUFFERS-1) & ++pr_string_tempindex];
}
#define RETURN_EDICT(e) (((int *)pr_globals)[OFS_RETURN] = EDICT_TO_PROG(e))
#define MSG_BROADCAST 0 // unreliable to all
#define MSG_ONE 1 // reliable to one (msg_entity)
#define MSG_ALL 2 // reliable to all
#define MSG_INIT 3 // write to the init string
/*
===============================================================================
BUILT-IN FUNCTIONS
===============================================================================
*/
static char *PF_VarString (int first)
{
int i;
static char out[1024];
size_t s;
out[0] = 0;
s = 0;
for (i = first; i < pr_argc; i++)
{
s = q_strlcat(out, G_STRING((OFS_PARM0+i*3)), sizeof(out));
if (s >= sizeof(out))
{
Con_Warning("PF_VarString: overflow (string truncated)\n");
return out;
}
}
if (s > 255)
Con_DWarning("PF_VarString: %i characters exceeds standard limit of 255 (max = %d).\n", (int) s, (int)(sizeof(out) - 1));
return out;
}
/*
=================
PF_error
This is a TERMINAL error, which will kill off the entire server.
Dumps self.
error(value)
=================
*/
static void PF_error (void)
{
char *s;
edict_t *ed;
s = PF_VarString(0);
Con_Printf ("======SERVER ERROR in %s:\n%s\n",
PR_GetString(pr_xfunction->s_name), s);
ed = PROG_TO_EDICT(pr_global_struct->self);
ED_Print (ed);
Host_Error ("Program error");
}
/*
=================
PF_objerror
Dumps out self, then an error message. The program is aborted and self is
removed, but the level can continue.
objerror(value)
=================
*/
static void PF_objerror (void)
{
char *s;
edict_t *ed;
s = PF_VarString(0);
Con_Printf ("======OBJECT ERROR in %s:\n%s\n",
PR_GetString(pr_xfunction->s_name), s);
ed = PROG_TO_EDICT(pr_global_struct->self);
ED_Print (ed);
ED_Free (ed);
//Host_Error ("Program error"); //johnfitz -- by design, this should not be fatal
}
/*
==============
PF_makevectors
Writes new values for v_forward, v_up, and v_right based on angles
makevectors(vector)
==============
*/
static void PF_makevectors (void)
{
AngleVectors (G_VECTOR(OFS_PARM0), pr_global_struct->v_forward, pr_global_struct->v_right, pr_global_struct->v_up);
}
/*
=================
PF_setorigin
This is the only valid way to move an object without using the physics
of the world (setting velocity and waiting). Directly changing origin
will not set internal links correctly, so clipping would be messed up.
This should be called when an object is spawned, and then only if it is
teleported.
setorigin (entity, origin)
=================
*/
static void PF_setorigin (void)
{
edict_t *e;
float *org;
e = G_EDICT(OFS_PARM0);
org = G_VECTOR(OFS_PARM1);
VectorCopy (org, e->v.origin);
SV_LinkEdict (e, false);
}
static void SetMinMaxSize (edict_t *e, float *minvec, float *maxvec, qboolean rotate)
{
float *angles;
vec3_t rmin, rmax;
float bounds[2][3];
float xvector[2], yvector[2];
float a;
vec3_t base, transformed;
int i, j, k, l;
for (i = 0; i < 3; i++)
if (minvec[i] > maxvec[i])
PR_RunError ("backwards mins/maxs");
rotate = false; // FIXME: implement rotation properly again
if (!rotate)
{
VectorCopy (minvec, rmin);
VectorCopy (maxvec, rmax);
}
else
{
// find min / max for rotations
angles = e->v.angles;
a = angles[1]/180 * M_PI;
xvector[0] = cos(a);
xvector[1] = sin(a);
yvector[0] = -sin(a);
yvector[1] = cos(a);
VectorCopy (minvec, bounds[0]);
VectorCopy (maxvec, bounds[1]);
rmin[0] = rmin[1] = rmin[2] = 9999;
rmax[0] = rmax[1] = rmax[2] = -9999;
for (i = 0; i <= 1; i++)
{
base[0] = bounds[i][0];
for (j = 0; j <= 1; j++)
{
base[1] = bounds[j][1];
for (k = 0; k <= 1; k++)
{
base[2] = bounds[k][2];
// transform the point
transformed[0] = xvector[0]*base[0] + yvector[0]*base[1];
transformed[1] = xvector[1]*base[0] + yvector[1]*base[1];
transformed[2] = base[2];
for (l = 0; l < 3; l++)
{
if (transformed[l] < rmin[l])
rmin[l] = transformed[l];
if (transformed[l] > rmax[l])
rmax[l] = transformed[l];
}
}
}
}
}
// set derived values
VectorCopy (rmin, e->v.mins);
VectorCopy (rmax, e->v.maxs);
VectorSubtract (maxvec, minvec, e->v.size);
SV_LinkEdict (e, false);
}
/*
=================
PF_setsize
the size box is rotated by the current angle
setsize (entity, minvector, maxvector)
=================
*/
static void PF_setsize (void)
{
edict_t *e;
float *minvec, *maxvec;
e = G_EDICT(OFS_PARM0);
minvec = G_VECTOR(OFS_PARM1);
maxvec = G_VECTOR(OFS_PARM2);
SetMinMaxSize (e, minvec, maxvec, false);
}
/*
=================
PF_setmodel
setmodel(entity, model)
=================
*/
static void PF_setmodel (void)
{
int i;
const char *m, **check;
qmodel_t *mod;
edict_t *e;
e = G_EDICT(OFS_PARM0);
m = G_STRING(OFS_PARM1);
// check to see if model was properly precached
for (i = 0, check = sv.model_precache; *check; i++, check++)
{
if (!strcmp(*check, m))
break;
}
if (!*check)
{
PR_RunError ("no precache: %s", m);
}
e->v.model = PR_SetEngineString(*check);
e->v.modelindex = i; //SV_ModelIndex (m);
mod = sv.models[ (int)e->v.modelindex]; // Mod_ForName (m, true);
if (mod)
//johnfitz -- correct physics cullboxes for bmodels
{
if (mod->type == mod_brush)
SetMinMaxSize (e, mod->clipmins, mod->clipmaxs, true);
else
SetMinMaxSize (e, mod->mins, mod->maxs, true);
}
//johnfitz
else
SetMinMaxSize (e, vec3_origin, vec3_origin, true);
}
/*
=================
PF_bprint
broadcast print to everyone on server
bprint(value)
=================
*/
static void PF_bprint (void)
{
char *s;
s = PF_VarString(0);
SV_BroadcastPrintf ("%s", s);
}
/*
=================
PF_sprint
single print to a specific client
sprint(clientent, value)
=================
*/
static void PF_sprint (void)
{
char *s;
client_t *client;
int entnum;
entnum = G_EDICTNUM(OFS_PARM0);
s = PF_VarString(1);
if (entnum < 1 || entnum > svs.maxclients)
{
Con_Printf ("tried to sprint to a non-client\n");
return;
}
client = &svs.clients[entnum-1];
MSG_WriteChar (&client->message,svc_print);
MSG_WriteString (&client->message, s );
}
/*
=================
PF_centerprint
single print to a specific client
centerprint(clientent, value)
=================
*/
static void PF_centerprint (void)
{
char *s;
client_t *client;
int entnum;
entnum = G_EDICTNUM(OFS_PARM0);
s = PF_VarString(1);
if (entnum < 1 || entnum > svs.maxclients)
{
Con_Printf ("tried to sprint to a non-client\n");
return;
}
client = &svs.clients[entnum-1];
MSG_WriteChar (&client->message,svc_centerprint);
MSG_WriteString (&client->message, s);
}
/*
=================
PF_normalize
vector normalize(vector)
=================
*/
static void PF_normalize (void)
{
float *value1;
vec3_t newvalue;
float new_temp;
value1 = G_VECTOR(OFS_PARM0);
new_temp = value1[0] * value1[0] + value1[1] * value1[1] + value1[2]*value1[2];
new_temp = sqrt (new_temp);
if (new_temp == 0)
newvalue[0] = newvalue[1] = newvalue[2] = 0;
else
{
new_temp = 1 / new_temp;
newvalue[0] = value1[0] * new_temp;
newvalue[1] = value1[1] * new_temp;
newvalue[2] = value1[2] * new_temp;
}
VectorCopy (newvalue, G_VECTOR(OFS_RETURN));
}
/*
=================
PF_vlen
scalar vlen(vector)
=================
*/
static void PF_vlen (void)
{
float *value1;
float new_temp;
value1 = G_VECTOR(OFS_PARM0);
new_temp = value1[0] * value1[0] + value1[1] * value1[1] + value1[2]*value1[2];
new_temp = sqrt(new_temp);
G_FLOAT(OFS_RETURN) = new_temp;
}
/*
=================
PF_vectoyaw
float vectoyaw(vector)
=================
*/
static void PF_vectoyaw (void)
{
float *value1;
float yaw;
value1 = G_VECTOR(OFS_PARM0);
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;
}
G_FLOAT(OFS_RETURN) = yaw;
}
/*
=================
PF_vectoangles
vector vectoangles(vector)
=================
*/
static void PF_vectoangles (void)
{
float *value1;
float forward;
float yaw, pitch;
value1 = G_VECTOR(OFS_PARM0);
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;
}
G_FLOAT(OFS_RETURN+0) = pitch;
G_FLOAT(OFS_RETURN+1) = yaw;
G_FLOAT(OFS_RETURN+2) = 0;
}
/*
=================
PF_Random
Returns a number from 0 <= num < 1
random()
=================
*/
static void PF_random (void)
{
float num;
num = (rand() & 0x7fff) / ((float)0x7fff);
G_FLOAT(OFS_RETURN) = num;
}
/*
=================
PF_particle
particle(origin, color, count)
=================
*/
static void PF_particle (void)
{
float *org, *dir;
float color;
float count;
org = G_VECTOR(OFS_PARM0);
dir = G_VECTOR(OFS_PARM1);
color = G_FLOAT(OFS_PARM2);
count = G_FLOAT(OFS_PARM3);
SV_StartParticle (org, dir, color, count);
}
/*
=================
PF_ambientsound
=================
*/
static void PF_ambientsound (void)
{
const char *samp, **check;
float *pos;
float vol, attenuation;
int i, soundnum;
int large = false; //johnfitz -- PROTOCOL_FITZQUAKE
pos = G_VECTOR (OFS_PARM0);
samp = G_STRING(OFS_PARM1);
vol = G_FLOAT(OFS_PARM2);
attenuation = G_FLOAT(OFS_PARM3);
// check to see if samp was properly precached
for (soundnum = 0, check = sv.sound_precache; *check; check++, soundnum++)
{
if (!strcmp(*check, samp))
break;
}
if (!*check)
{
Con_Printf ("no precache: %s\n", samp);
return;
}
//johnfitz -- PROTOCOL_FITZQUAKE
if (soundnum > 255)
{
if (sv.protocol == PROTOCOL_NETQUAKE)
return; //don't send any info protocol can't support
else
large = true;
}
//johnfitz
// add an svc_spawnambient command to the level signon packet
//johnfitz -- PROTOCOL_FITZQUAKE
if (large)
MSG_WriteByte (&sv.signon,svc_spawnstaticsound2);
else
MSG_WriteByte (&sv.signon,svc_spawnstaticsound);
//johnfitz
for (i = 0; i < 3; i++)
MSG_WriteCoord(&sv.signon, pos[i], sv.protocolflags);
//johnfitz -- PROTOCOL_FITZQUAKE
if (large)
MSG_WriteShort(&sv.signon, soundnum);
else
MSG_WriteByte (&sv.signon, soundnum);
//johnfitz
MSG_WriteByte (&sv.signon, vol*255);
MSG_WriteByte (&sv.signon, attenuation*64);
}
/*
=================
PF_sound
Each entity can have eight independant sound sources, like voice,
weapon, feet, etc.
Channel 0 is an auto-allocate channel, the others override anything
already running on that entity/channel pair.
An attenuation of 0 will play full volume everywhere in the level.
Larger attenuations will drop off.
=================
*/
static void PF_sound (void)
{
const char *sample;
int channel;
edict_t *entity;
int volume;
float attenuation;
entity = G_EDICT(OFS_PARM0);
channel = G_FLOAT(OFS_PARM1);
sample = G_STRING(OFS_PARM2);
volume = G_FLOAT(OFS_PARM3) * 255;
attenuation = G_FLOAT(OFS_PARM4);
if (volume < 0 || volume > 255)
Host_Error ("SV_StartSound: volume = %i", volume);
if (attenuation < 0 || attenuation > 4)
Host_Error ("SV_StartSound: attenuation = %f", attenuation);
if (channel < 0 || channel > 7)
Host_Error ("SV_StartSound: channel = %i", channel);
SV_StartSound (entity, channel, sample, volume, attenuation);
}
/*
=================
PF_break
break()
=================
*/
static void PF_break (void)
{
Con_Printf ("break statement\n");
*(int *)-4 = 0; // dump to debugger
// PR_RunError ("break statement");
}
/*
=================
PF_traceline
Used for use tracing and shot targeting
Traces are blocked by bbox and exact bsp entityes, and also slide box entities
if the tryents flag is set.
traceline (vector1, vector2, tryents)
=================
*/
static void PF_traceline (void)
{
float *v1, *v2;
trace_t trace;
int nomonsters;
edict_t *ent;
v1 = G_VECTOR(OFS_PARM0);
v2 = G_VECTOR(OFS_PARM1);
nomonsters = G_FLOAT(OFS_PARM2);
ent = G_EDICT(OFS_PARM3);
/* FIXME FIXME FIXME: Why do we hit this with certain progs.dat ?? */
if (developer.value) {
if (IS_NAN(v1[0]) || IS_NAN(v1[1]) || IS_NAN(v1[2]) ||
IS_NAN(v2[0]) || IS_NAN(v2[1]) || IS_NAN(v2[2])) {
Con_Warning ("NAN in traceline:\nv1(%f %f %f) v2(%f %f %f)\nentity %d\n",
v1[0], v1[1], v1[2], v2[0], v2[1], v2[2], NUM_FOR_EDICT(ent));
}
}
if (IS_NAN(v1[0]) || IS_NAN(v1[1]) || IS_NAN(v1[2]))
v1[0] = v1[1] = v1[2] = 0;
if (IS_NAN(v2[0]) || IS_NAN(v2[1]) || IS_NAN(v2[2]))
v2[0] = v2[1] = v2[2] = 0;
trace = SV_Move (v1, vec3_origin, vec3_origin, v2, nomonsters, ent);
pr_global_struct->trace_allsolid = trace.allsolid;
pr_global_struct->trace_startsolid = trace.startsolid;
pr_global_struct->trace_fraction = trace.fraction;
pr_global_struct->trace_inwater = trace.inwater;
pr_global_struct->trace_inopen = trace.inopen;
VectorCopy (trace.endpos, pr_global_struct->trace_endpos);
VectorCopy (trace.plane.normal, pr_global_struct->trace_plane_normal);
pr_global_struct->trace_plane_dist = trace.plane.dist;
if (trace.ent)
pr_global_struct->trace_ent = EDICT_TO_PROG(trace.ent);
else
pr_global_struct->trace_ent = EDICT_TO_PROG(sv.edicts);
}
/*
=================
PF_checkpos
Returns true if the given entity can move to the given position from it's
current position by walking or rolling.
FIXME: make work...
scalar checkpos (entity, vector)
=================
*/
#if 0
static void PF_checkpos (void)
{
}
#endif
//============================================================================
static byte checkpvs[MAX_MAP_LEAFS/8];
static int PF_newcheckclient (int check)
{
int i;
byte *pvs;
edict_t *ent;
mleaf_t *leaf;
vec3_t org;
// cycle to the next one
if (check < 1)
check = 1;
if (check > svs.maxclients)
check = svs.maxclients;
if (check == svs.maxclients)
i = 1;
else
i = check + 1;
for ( ; ; i++)
{
if (i == svs.maxclients+1)
i = 1;
ent = EDICT_NUM(i);
if (i == check)
break; // didn't find anything else
if (ent->free)
continue;
if (ent->v.health <= 0)
continue;
if ((int)ent->v.flags & FL_NOTARGET)
continue;
// anything that is a client, or has a client as an enemy
break;
}
// get the PVS for the entity
VectorAdd (ent->v.origin, ent->v.view_ofs, org);
leaf = Mod_PointInLeaf (org, sv.worldmodel);
pvs = Mod_LeafPVS (leaf, sv.worldmodel);
memcpy (checkpvs, pvs, (sv.worldmodel->numleafs+7)>>3 );
return i;
}
/*
=================
PF_checkclient
Returns a client (or object that has a client enemy) that would be a
valid target.
If there are more than one valid options, they are cycled each frame
If (self.origin + self.viewofs) is not in the PVS of the current target,
it is not returned at all.
name checkclient ()
=================
*/
#define MAX_CHECK 16
static int c_invis, c_notvis;
static void PF_checkclient (void)
{
edict_t *ent, *self;
mleaf_t *leaf;
int l;
vec3_t view;
// find a new check if on a new frame
if (sv.time - sv.lastchecktime >= 0.1)
{
sv.lastcheck = PF_newcheckclient (sv.lastcheck);
sv.lastchecktime = sv.time;
}
// return check if it might be visible
ent = EDICT_NUM(sv.lastcheck);
if (ent->free || ent->v.health <= 0)
{
RETURN_EDICT(sv.edicts);
return;
}
// if current entity can't possibly see the check entity, return 0
self = PROG_TO_EDICT(pr_global_struct->self);
VectorAdd (self->v.origin, self->v.view_ofs, view);
leaf = Mod_PointInLeaf (view, sv.worldmodel);
l = (leaf - sv.worldmodel->leafs) - 1;
if ( (l < 0) || !(checkpvs[l>>3] & (1 << (l & 7))) )
{
c_notvis++;
RETURN_EDICT(sv.edicts);
return;
}
// might be able to see it
c_invis++;
RETURN_EDICT(ent);
}
//============================================================================
/*
=================
PF_stuffcmd
Sends text over to the client's execution buffer
stuffcmd (clientent, value)
=================
*/
static void PF_stuffcmd (void)
{
int entnum;
const char *str;
client_t *old;
entnum = G_EDICTNUM(OFS_PARM0);
if (entnum < 1 || entnum > svs.maxclients)
PR_RunError ("Parm 0 not a client");
str = G_STRING(OFS_PARM1);
old = host_client;
host_client = &svs.clients[entnum-1];
Host_ClientCommands ("%s", str);
host_client = old;
}
/*
=================
PF_localcmd
Sends text over to the client's execution buffer
localcmd (string)
=================
*/
static void PF_localcmd (void)
{
const char *str;
str = G_STRING(OFS_PARM0);
Cbuf_AddText (str);
}
/*
=================
PF_cvar
float cvar (string)
=================
*/
static void PF_cvar (void)
{
const char *str;
str = G_STRING(OFS_PARM0);
G_FLOAT(OFS_RETURN) = Cvar_VariableValue (str);
}
/*
=================
PF_cvar_set
float cvar (string)
=================
*/
static void PF_cvar_set (void)
{
const char *var, *val;
var = G_STRING(OFS_PARM0);
val = G_STRING(OFS_PARM1);
Cvar_Set (var, val);
}
/*
=================
PF_findradius
Returns a chain of entities that have origins within a spherical area
findradius (origin, radius)
=================
*/
static void PF_findradius (void)
{
edict_t *ent, *chain;
float rad;
float *org;
vec3_t eorg;
int i, j;
chain = (edict_t *)sv.edicts;
org = G_VECTOR(OFS_PARM0);
rad = G_FLOAT(OFS_PARM1);
ent = NEXT_EDICT(sv.edicts);
for (i = 1; i < sv.num_edicts; i++, ent = NEXT_EDICT(ent))
{
if (ent->free)
continue;
if (ent->v.solid == SOLID_NOT)
continue;
for (j = 0; j < 3; j++)
eorg[j] = org[j] - (ent->v.origin[j] + (ent->v.mins[j] + ent->v.maxs[j]) * 0.5);
if (VectorLength(eorg) > rad)
continue;
ent->v.chain = EDICT_TO_PROG(chain);
chain = ent;
}
RETURN_EDICT(chain);
}
/*
=========
PF_dprint
=========
*/
static void PF_dprint (void)
{
Con_DPrintf ("%s",PF_VarString(0));
}
static void PF_ftos (void)
{
float v;
char *s;
v = G_FLOAT(OFS_PARM0);
s = PR_GetTempString();
if (v == (int)v)
sprintf (s, "%d",(int)v);
else
sprintf (s, "%5.1f",v);
G_INT(OFS_RETURN) = PR_SetEngineString(s);
}
static void PF_fabs (void)
{
float v;
v = G_FLOAT(OFS_PARM0);
G_FLOAT(OFS_RETURN) = fabs(v);
}
static void PF_vtos (void)
{
char *s;
s = PR_GetTempString();
sprintf (s, "'%5.1f %5.1f %5.1f'", G_VECTOR(OFS_PARM0)[0], G_VECTOR(OFS_PARM0)[1], G_VECTOR(OFS_PARM0)[2]);
G_INT(OFS_RETURN) = PR_SetEngineString(s);
}
static void PF_Spawn (void)
{
edict_t *ed;
ed = ED_Alloc();
RETURN_EDICT(ed);
}
static void PF_Remove (void)
{
edict_t *ed;
ed = G_EDICT(OFS_PARM0);
ED_Free (ed);
}
// entity (entity start, .string field, string match) find = #5;
static void PF_Find (void)
{
int e;
int f;
const char *s, *t;
edict_t *ed;
e = G_EDICTNUM(OFS_PARM0);
f = G_INT(OFS_PARM1);
s = G_STRING(OFS_PARM2);
if (!s)
PR_RunError ("PF_Find: bad search string");
for (e++ ; e < sv.num_edicts ; e++)
{
ed = EDICT_NUM(e);
if (ed->free)
continue;
t = E_STRING(ed,f);
if (!t)
continue;
if (!strcmp(t,s))
{
RETURN_EDICT(ed);
return;
}
}
RETURN_EDICT(sv.edicts);
}
static void PR_CheckEmptyString (const char *s)
{
if (s[0] <= ' ')
PR_RunError ("Bad string");
}
static void PF_precache_file (void)
{ // precache_file is only used to copy files with qcc, it does nothing
G_INT(OFS_RETURN) = G_INT(OFS_PARM0);
}
static void PF_precache_sound (void)
{
const char *s;
int i;
if (sv.state != ss_loading)
PR_RunError ("PF_Precache_*: Precache can only be done in spawn functions");
s = G_STRING(OFS_PARM0);
G_INT(OFS_RETURN) = G_INT(OFS_PARM0);
PR_CheckEmptyString (s);
for (i = 0; i < MAX_SOUNDS; i++)
{
if (!sv.sound_precache[i])
{
sv.sound_precache[i] = s;
return;
}
if (!strcmp(sv.sound_precache[i], s))
return;
}
PR_RunError ("PF_precache_sound: overflow");
}
static void PF_precache_model (void)
{
const char *s;
int i;
if (sv.state != ss_loading)
PR_RunError ("PF_Precache_*: Precache can only be done in spawn functions");
s = G_STRING(OFS_PARM0);
G_INT(OFS_RETURN) = G_INT(OFS_PARM0);
PR_CheckEmptyString (s);
for (i = 0; i < MAX_MODELS; i++)
{
if (!sv.model_precache[i])
{
sv.model_precache[i] = s;
sv.models[i] = Mod_ForName (s, true);
return;
}
if (!strcmp(sv.model_precache[i], s))
return;
}
PR_RunError ("PF_precache_model: overflow");
}
static void PF_coredump (void)
{
ED_PrintEdicts ();
}
static void PF_traceon (void)
{
pr_trace = true;
}
static void PF_traceoff (void)
{
pr_trace = false;
}
static void PF_eprint (void)
{
ED_PrintNum (G_EDICTNUM(OFS_PARM0));
}
/*
===============
PF_walkmove
float(float yaw, float dist) walkmove
===============
*/
static void PF_walkmove (void)
{
edict_t *ent;
float yaw, dist;
vec3_t move;
dfunction_t *oldf;
int oldself;
ent = PROG_TO_EDICT(pr_global_struct->self);
yaw = G_FLOAT(OFS_PARM0);
dist = G_FLOAT(OFS_PARM1);
if ( !( (int)ent->v.flags & (FL_ONGROUND|FL_FLY|FL_SWIM) ) )
{
G_FLOAT(OFS_RETURN) = 0;
return;
}
yaw = yaw * M_PI * 2 / 360;
move[0] = cos(yaw) * dist;
move[1] = sin(yaw) * dist;
move[2] = 0;
// save program state, because SV_movestep may call other progs
oldf = pr_xfunction;
oldself = pr_global_struct->self;
G_FLOAT(OFS_RETURN) = SV_movestep(ent, move, true);
// restore program state
pr_xfunction = oldf;
pr_global_struct->self = oldself;
}
/*
===============
PF_droptofloor
void() droptofloor
===============
*/
static void PF_droptofloor (void)
{
edict_t *ent;
vec3_t end;
trace_t trace;
ent = PROG_TO_EDICT(pr_global_struct->self);
VectorCopy (ent->v.origin, end);
end[2] -= 256;
trace = SV_Move (ent->v.origin, ent->v.mins, ent->v.maxs, end, false, ent);
if (trace.fraction == 1 || trace.allsolid)
G_FLOAT(OFS_RETURN) = 0;
else
{
VectorCopy (trace.endpos, ent->v.origin);
SV_LinkEdict (ent, false);
ent->v.flags = (int)ent->v.flags | FL_ONGROUND;
ent->v.groundentity = EDICT_TO_PROG(trace.ent);
G_FLOAT(OFS_RETURN) = 1;
}
}
/*
===============
PF_lightstyle
void(float style, string value) lightstyle
===============
*/
static void PF_lightstyle (void)
{
int style;
const char *val;
client_t *client;
int j;
style = G_FLOAT(OFS_PARM0);
val = G_STRING(OFS_PARM1);
// bounds check to avoid clobbering sv struct
if (style < 0 || style >= MAX_LIGHTSTYLES)
Host_Error("PF_lightstyle: style = %d", style);
// change the string in sv
sv.lightstyles[style] = val;
// send message to all clients on this server
if (sv.state != ss_active)
return;
for (j = 0, client = svs.clients; j < svs.maxclients; j++, client++)
{
if (client->active || client->spawned)
{
MSG_WriteChar (&client->message, svc_lightstyle);
MSG_WriteChar (&client->message, style);
MSG_WriteString (&client->message, val);
}
}
}
static void PF_rint (void)
{
float f;
f = G_FLOAT(OFS_PARM0);
if (f > 0)
G_FLOAT(OFS_RETURN) = (int)(f + 0.5);
else
G_FLOAT(OFS_RETURN) = (int)(f - 0.5);
}
static void PF_floor (void)
{
G_FLOAT(OFS_RETURN) = floor(G_FLOAT(OFS_PARM0));
}
static void PF_ceil (void)
{
G_FLOAT(OFS_RETURN) = ceil(G_FLOAT(OFS_PARM0));
}
/*
=============
PF_checkbottom
=============
*/
static void PF_checkbottom (void)
{
edict_t *ent;
ent = G_EDICT(OFS_PARM0);
G_FLOAT(OFS_RETURN) = SV_CheckBottom (ent);
}
/*
=============
PF_pointcontents
=============
*/
static void PF_pointcontents (void)
{
float *v;
v = G_VECTOR(OFS_PARM0);
G_FLOAT(OFS_RETURN) = SV_PointContents (v);
}
/*
=============
PF_nextent
entity nextent(entity)
=============
*/
static void PF_nextent (void)
{
int i;
edict_t *ent;
i = G_EDICTNUM(OFS_PARM0);
while (1)
{
i++;
if (i == sv.num_edicts)
{
RETURN_EDICT(sv.edicts);
return;
}
ent = EDICT_NUM(i);
if (!ent->free)
{
RETURN_EDICT(ent);
return;
}
}
}
/*
=============
PF_aim
Pick a vector for the player to shoot along
vector aim(entity, missilespeed)
=============
*/
cvar_t sv_aim = {"sv_aim", "1", CVAR_NONE}; // ericw -- turn autoaim off by default. was 0.93
static void PF_aim (void)
{
edict_t *ent, *check, *bestent;
vec3_t start, dir, end, bestdir;
int i, j;
trace_t tr;
float dist, bestdist;
float speed;
ent = G_EDICT(OFS_PARM0);
speed = G_FLOAT(OFS_PARM1);
(void) speed; /* variable set but not used */
VectorCopy (ent->v.origin, start);
start[2] += 20;
// try sending a trace straight
VectorCopy (pr_global_struct->v_forward, dir);
VectorMA (start, 2048, dir, end);
tr = SV_Move (start, vec3_origin, vec3_origin, end, false, ent);
if (tr.ent && tr.ent->v.takedamage == DAMAGE_AIM
&& (!teamplay.value || ent->v.team <= 0 || ent->v.team != tr.ent->v.team) )
{
VectorCopy (pr_global_struct->v_forward, G_VECTOR(OFS_RETURN));
return;
}
// try all possible entities
VectorCopy (dir, bestdir);
bestdist = sv_aim.value;
bestent = NULL;
check = NEXT_EDICT(sv.edicts);
for (i = 1; i < sv.num_edicts; i++, check = NEXT_EDICT(check) )
{
if (check->v.takedamage != DAMAGE_AIM)
continue;
if (check == ent)
continue;
if (teamplay.value && ent->v.team > 0 && ent->v.team == check->v.team)
continue; // don't aim at teammate
for (j = 0; j < 3; j++)
end[j] = check->v.origin[j] + 0.5 * (check->v.mins[j] + check->v.maxs[j]);
VectorSubtract (end, start, dir);
VectorNormalize (dir);
dist = DotProduct (dir, pr_global_struct->v_forward);
if (dist < bestdist)
continue; // to far to turn
tr = SV_Move (start, vec3_origin, vec3_origin, end, false, ent);
if (tr.ent == check)
{ // can shoot at this one
bestdist = dist;
bestent = check;
}
}
if (bestent)
{
VectorSubtract (bestent->v.origin, ent->v.origin, dir);
dist = DotProduct (dir, pr_global_struct->v_forward);
VectorScale (pr_global_struct->v_forward, dist, end);
end[2] = dir[2];
VectorNormalize (end);
VectorCopy (end, G_VECTOR(OFS_RETURN));
}
else
{
VectorCopy (bestdir, G_VECTOR(OFS_RETURN));
}
}
/*
==============
PF_changeyaw
This was a major timewaster in progs, so it was converted to C
==============
*/
void PF_changeyaw (void)
{
edict_t *ent;
float ideal, current, move, speed;
ent = PROG_TO_EDICT(pr_global_struct->self);
current = anglemod( ent->v.angles[1] );
ideal = ent->v.ideal_yaw;
speed = ent->v.yaw_speed;
if (current == ideal)
return;
move = ideal - current;
if (ideal > current)
{
if (move >= 180)
move = move - 360;
}
else
{
if (move <= -180)
move = move + 360;
}
if (move > 0)
{
if (move > speed)
move = speed;
}
else
{
if (move < -speed)
move = -speed;
}
ent->v.angles[1] = anglemod (current + move);
}
/*
===============================================================================
MESSAGE WRITING
===============================================================================
*/
static sizebuf_t *WriteDest (void)
{
int entnum;
int dest;
edict_t *ent;
dest = G_FLOAT(OFS_PARM0);
switch (dest)
{
case MSG_BROADCAST:
return &sv.datagram;
case MSG_ONE:
ent = PROG_TO_EDICT(pr_global_struct->msg_entity);
entnum = NUM_FOR_EDICT(ent);
if (entnum < 1 || entnum > svs.maxclients)
PR_RunError ("WriteDest: not a client");
return &svs.clients[entnum-1].message;
case MSG_ALL:
return &sv.reliable_datagram;
case MSG_INIT:
return &sv.signon;
default:
PR_RunError ("WriteDest: bad destination");
break;
}
return NULL;
}
static void PF_WriteByte (void)
{
MSG_WriteByte (WriteDest(), G_FLOAT(OFS_PARM1));
}
static void PF_WriteChar (void)
{
MSG_WriteChar (WriteDest(), G_FLOAT(OFS_PARM1));
}
static void PF_WriteShort (void)
{
MSG_WriteShort (WriteDest(), G_FLOAT(OFS_PARM1));
}
static void PF_WriteLong (void)
{
MSG_WriteLong (WriteDest(), G_FLOAT(OFS_PARM1));
}
static void PF_WriteAngle (void)
{
MSG_WriteAngle (WriteDest(), G_FLOAT(OFS_PARM1), sv.protocolflags);
}
static void PF_WriteCoord (void)
{
MSG_WriteCoord (WriteDest(), G_FLOAT(OFS_PARM1), sv.protocolflags);
}
static void PF_WriteString (void)
{
MSG_WriteString (WriteDest(), G_STRING(OFS_PARM1));
}
static void PF_WriteEntity (void)
{
MSG_WriteShort (WriteDest(), G_EDICTNUM(OFS_PARM1));
}
//=============================================================================
static void PF_makestatic (void)
{
edict_t *ent;
int i;
int bits = 0; //johnfitz -- PROTOCOL_FITZQUAKE
ent = G_EDICT(OFS_PARM0);
//johnfitz -- don't send invisible static entities
if (ent->alpha == ENTALPHA_ZERO) {
ED_Free (ent);
return;
}
//johnfitz
//johnfitz -- PROTOCOL_FITZQUAKE
if (sv.protocol == PROTOCOL_NETQUAKE)
{
if (SV_ModelIndex(PR_GetString(ent->v.model)) & 0xFF00 || (int)(ent->v.frame) & 0xFF00)
{
ED_Free (ent);
return; //can't display the correct model & frame, so don't show it at all
}
}
else
{
if (SV_ModelIndex(PR_GetString(ent->v.model)) & 0xFF00)
bits |= B_LARGEMODEL;
if ((int)(ent->v.frame) & 0xFF00)
bits |= B_LARGEFRAME;
if (ent->alpha != ENTALPHA_DEFAULT)
bits |= B_ALPHA;
}
if (bits)
{
MSG_WriteByte (&sv.signon, svc_spawnstatic2);
MSG_WriteByte (&sv.signon, bits);
}
else
MSG_WriteByte (&sv.signon, svc_spawnstatic);
if (bits & B_LARGEMODEL)
MSG_WriteShort (&sv.signon, SV_ModelIndex(PR_GetString(ent->v.model)));
else
MSG_WriteByte (&sv.signon, SV_ModelIndex(PR_GetString(ent->v.model)));
if (bits & B_LARGEFRAME)
MSG_WriteShort (&sv.signon, ent->v.frame);
else
MSG_WriteByte (&sv.signon, ent->v.frame);
//johnfitz
MSG_WriteByte (&sv.signon, ent->v.colormap);
MSG_WriteByte (&sv.signon, ent->v.skin);
for (i = 0; i < 3; i++)
{
MSG_WriteCoord(&sv.signon, ent->v.origin[i], sv.protocolflags);
MSG_WriteAngle(&sv.signon, ent->v.angles[i], sv.protocolflags);
}
//johnfitz -- PROTOCOL_FITZQUAKE
if (bits & B_ALPHA)
MSG_WriteByte (&sv.signon, ent->alpha);
//johnfitz
// throw the entity away now
ED_Free (ent);
}
//=============================================================================
/*
==============
PF_setspawnparms
==============
*/
static void PF_setspawnparms (void)
{
edict_t *ent;
int i;
client_t *client;
ent = G_EDICT(OFS_PARM0);
i = NUM_FOR_EDICT(ent);
if (i < 1 || i > svs.maxclients)
PR_RunError ("Entity is not a client");
// copy spawn parms out of the client_t
client = svs.clients + (i-1);
for (i = 0; i < NUM_SPAWN_PARMS; i++)
(&pr_global_struct->parm1)[i] = client->spawn_parms[i];
}
/*
==============
PF_changelevel
==============
*/
static void PF_changelevel (void)
{
const char *s;
// make sure we don't issue two changelevels
if (svs.changelevel_issued)
return;
svs.changelevel_issued = true;
s = G_STRING(OFS_PARM0);
Cbuf_AddText (va("changelevel %s\n",s));
}
static void PF_Fixme (void)
{
PR_RunError ("unimplemented builtin");
}
static builtin_t pr_builtin[] =
{
PF_Fixme,
PF_makevectors, // void(entity e) makevectors = #1
PF_setorigin, // void(entity e, vector o) setorigin = #2
PF_setmodel, // void(entity e, string m) setmodel = #3
PF_setsize, // void(entity e, vector min, vector max) setsize = #4
PF_Fixme, // void(entity e, vector min, vector max) setabssize = #5
PF_break, // void() break = #6
PF_random, // float() random = #7
PF_sound, // void(entity e, float chan, string samp) sound = #8
PF_normalize, // vector(vector v) normalize = #9
PF_error, // void(string e) error = #10
PF_objerror, // void(string e) objerror = #11
PF_vlen, // float(vector v) vlen = #12
PF_vectoyaw, // float(vector v) vectoyaw = #13
PF_Spawn, // entity() spawn = #14
PF_Remove, // void(entity e) remove = #15
PF_traceline, // float(vector v1, vector v2, float tryents) traceline = #16
PF_checkclient, // entity() clientlist = #17
PF_Find, // entity(entity start, .string fld, string match) find = #18
PF_precache_sound, // void(string s) precache_sound = #19
PF_precache_model, // void(string s) precache_model = #20
PF_stuffcmd, // void(entity client, string s)stuffcmd = #21
PF_findradius, // entity(vector org, float rad) findradius = #22
PF_bprint, // void(string s) bprint = #23
PF_sprint, // void(entity client, string s) sprint = #24
PF_dprint, // void(string s) dprint = #25
PF_ftos, // void(string s) ftos = #26
PF_vtos, // void(string s) vtos = #27
PF_coredump,
PF_traceon,
PF_traceoff,
PF_eprint, // void(entity e) debug print an entire entity
PF_walkmove, // float(float yaw, float dist) walkmove
PF_Fixme, // float(float yaw, float dist) walkmove
PF_droptofloor,
PF_lightstyle,
PF_rint,
PF_floor,
PF_ceil,
PF_Fixme,
PF_checkbottom,
PF_pointcontents,
PF_Fixme,
PF_fabs,
PF_aim,
PF_cvar,
PF_localcmd,
PF_nextent,
PF_particle,
PF_changeyaw,
PF_Fixme,
PF_vectoangles,
PF_WriteByte,
PF_WriteChar,
PF_WriteShort,
PF_WriteLong,
PF_WriteCoord,
PF_WriteAngle,
PF_WriteString,
PF_WriteEntity,
PF_Fixme,
PF_Fixme,
PF_Fixme,
PF_Fixme,
PF_Fixme,
PF_Fixme,
PF_Fixme,
SV_MoveToGoal,
PF_precache_file,
PF_makestatic,
PF_changelevel,
PF_Fixme,
PF_cvar_set,
PF_centerprint,
PF_ambientsound,
PF_precache_model,
PF_precache_sound, // precache_sound2 is different only for qcc
PF_precache_file,
PF_setspawnparms
};
builtin_t *pr_builtins = pr_builtin;
int pr_numbuiltins = sizeof(pr_builtin)/sizeof(pr_builtin[0]);
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