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builtin.c
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builtin.c
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/* 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 the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
See file, 'COPYING', for details.
*/
#include "quakedef.h"
#define RETURN_EDICT(e) (((int *)pr_globals)[OFS_RETURN] = EDICT_TO_PROG(e))
/*
===============================================================================
BUILT-IN FUNCTIONS
===============================================================================
*/
char *PF_VarString (int first)
{
int i;
static char out[256];
out[0] = 0;
for (i=first ; i<pr_argc ; i++)
{
strcat (out, G_STRING((OFS_PARM0+i*3)));
}
return out;
}
/*
=================
PF_errror
This is a TERMINAL error, which will kill off the entire server.
Dumps self.
error(value)
=================
*/
void PF_error (void)
{
char *s;
edict_t *ed;
s = PF_VarString(0);
Con_Printf ("======SERVER ERROR in %s:\n%s\n"
,pr_strings + 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)
=================
*/
void PF_objerror (void)
{
char *s;
edict_t *ed;
s = PF_VarString(0);
Con_Printf ("======OBJECT ERROR in %s:\n%s\n"
,pr_strings + pr_xfunction->s_name,s);
ed = PROG_TO_EDICT(pr_global_struct->self);
ED_Print (ed);
ED_Free (ed);
Host_Error ("Program error");
}
/*
==============
PF_makevectors
Writes new values for v_forward, v_up, and v_right based on angles
makevectors(vector)
==============
*/
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)
=================
*/
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);
}
void SetMinMaxSize (edict_t *e, float *min, float *max, 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 (min[i] > max[i])
PR_RunError ("backwards mins/maxs");
rotate = false; // FIXME: implement rotation properly again
if (!rotate)
{
VectorCopy (min, rmin);
VectorCopy (max, 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 (min, bounds[0]);
VectorCopy (max, 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 (max, min, e->v.size);
SV_LinkEdict (e, false);
}
/*
=================
PF_setsize
the size box is rotated by the current angle
setsize (entity, minvector, maxvector)
=================
*/
void PF_setsize (void)
{
edict_t *e;
float *min, *max;
e = G_EDICT(OFS_PARM0);
min = G_VECTOR(OFS_PARM1);
max = G_VECTOR(OFS_PARM2);
SetMinMaxSize (e, min, max, false);
}
/*
=================
PF_setmodel
setmodel(entity, model)
=================
*/
void PF_setmodel (void)
{
edict_t *e;
char *m, **check;
model_t *mod;
int i;
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\n", m);
e->v.model = m - pr_strings;
e->v.modelindex = i; //SV_ModelIndex (m);
mod = sv.models[ (int)e->v.modelindex]; // Mod_ForName (m, true);
if (mod)
SetMinMaxSize (e, mod->mins, mod->maxs, true);
else
SetMinMaxSize (e, vec3_origin, vec3_origin, true);
}
/*
=================
PF_bprint
broadcast print to everyone on server
bprint(value)
=================
*/
void PF_bprint (void)
{
char *s;
s = PF_VarString(0);
SV_BroadcastPrintf (s);
}
/*
=================
PF_sprint
single print to a specific client
sprint(clientent, value)
=================
*/
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)
=================
*/
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)
=================
*/
void PF_normalize (void)
{
float *value1;
vec3_t newvalue;
float new;
value1 = G_VECTOR(OFS_PARM0);
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, G_VECTOR(OFS_RETURN));
}
/*
=================
PF_vlen
scalar vlen(vector)
=================
*/
void PF_vlen (void)
{
float *value1;
float new;
value1 = G_VECTOR(OFS_PARM0);
new = value1[0] * value1[0] + value1[1] * value1[1] + value1[2]*value1[2];
new = sqrt(new);
G_FLOAT(OFS_RETURN) = new;
}
/*
=================
PF_vectoyaw
float vectoyaw(vector)
=================
*/
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)
=================
*/
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()
=================
*/
void PF_random (void)
{
float num;
num = (rand ()&0x7fff) / ((float)0x7fff);
G_FLOAT(OFS_RETURN) = num;
}
/*
=================
PF_particle
particle(origin, color, count)
=================
*/
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
=================
*/
void PF_ambientsound (void)
{
char **check;
char *samp;
float *pos;
float vol, attenuation;
int i, soundnum;
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;
}
// add an svc_spawnambient command to the level signon packet
MSG_WriteByte (&sv.signon,svc_spawnstaticsound);
for (i=0 ; i<3 ; i++)
MSG_WriteCoord(&sv.signon, pos[i]);
MSG_WriteByte (&sv.signon, soundnum);
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
allready running on that entity/channel pair.
An attenuation of 0 will play full volume everywhere in the level.
Larger attenuations will drop off.
=================
*/
void PF_sound (void)
{
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)
Sys_Error ("SV_StartSound: volume = %i", volume);
if (attenuation < 0 || attenuation > 4)
Sys_Error ("SV_StartSound: attenuation = %f", attenuation);
if (channel < 0 || channel > 7)
Sys_Error ("SV_StartSound: channel = %i", channel);
SV_StartSound (entity, channel, sample, volume, attenuation);
}
/*
=================
PF_break
break()
=================
*/
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)
=================
*/
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);
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)
=================
*/
void PF_checkpos (void)
{
}
//============================================================================
byte checkpvs[MAX_MAP_LEAFS/8];
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
int c_invis, c_notvis;
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)
=================
*/
void PF_stuffcmd (void)
{
int entnum;
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)
=================
*/
void PF_localcmd (void)
{
char *str;
str = G_STRING(OFS_PARM0);
Cbuf_AddText (str);
}
/*
=================
PF_cvar
float cvar (string)
=================
*/
void PF_cvar (void)
{
char *str;
str = G_STRING(OFS_PARM0);
G_FLOAT(OFS_RETURN) = Cvar_VariableValue (str);
}
/*
=================
PF_cvar_set
float cvar (string)
=================
*/
void PF_cvar_set (void)
{
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)
=================
*/
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 (Length(eorg) > rad)
continue;
ent->v.chain = EDICT_TO_PROG(chain);
chain = ent;
}
RETURN_EDICT(chain);
}
/*
=========
PF_dprint
=========
*/
void PF_dprint (void)
{
Con_Printf ("%s",PF_VarString(0));
}
char pr_string_temp[128];
void PF_ftos (void)
{
float v;
v = G_FLOAT(OFS_PARM0);
if (v == (int)v)
sprintf (pr_string_temp, "%d",(int)v);
else
sprintf (pr_string_temp, "%5.1f",v);
G_INT(OFS_RETURN) = pr_string_temp - pr_strings;
}
void PF_fabs (void)
{
float v;
v = G_FLOAT(OFS_PARM0);
G_FLOAT(OFS_RETURN) = fabs(v);
}
void PF_vtos (void)
{
sprintf (pr_string_temp, "'%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_string_temp - pr_strings;
}
void PF_Spawn (void)
{
edict_t *ed;
ed = ED_Alloc();
RETURN_EDICT(ed);
}
void PF_Remove (void)
{
edict_t *ed;
ed = G_EDICT(OFS_PARM0);
ED_Free (ed);
}
// entity (entity start, .string field, string match) find = #5;
void PF_Find (void)
{
int e;
int f;
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);
}
void PR_CheckEmptyString (char *s)
{
if (s[0] <= ' ')
PR_RunError ("Bad string");
}
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);
}
void PF_precache_sound (void)
{
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");
}