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pr_cmds.c
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pr_cmds.c
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#include "quakedef.h"
#define RETURN_EDICT(pr, e) (((int *)pr->globals)[OFS_RETURN] = EDICT_TO_PROG(pr, e))
/*
===============================================================================
BUILT-IN FUNCTIONS
===============================================================================
*/
static char *
PF_VarString(pr_t *pr, int first)
{
int i;
static char out[256];
out[0] = 0;
for (i=first ; i<pr->argc ; i++)
{
strcat (out, G_STRING(pr, (OFS_PARM0+i*3)));
}
return out;
}
/*
=================
PF_errror
This is a TERMINAL error, which will kill off the entire server.
Dumps self.
error(value)
=================
*/
static void
PF_error(pr_t *pr)
{
char *s;
edict_t *ed;
s = PF_VarString(pr, 0);
Con_Printf ("======SERVER ERROR in %s:\n%s\n", PR_Str(pr, pr->xfunction->s_name),s);
ed = PROG_TO_EDICT(pr, pr->global_struct->self);
ED_Print (pr, 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(pr_t *pr)
{
char *s;
edict_t *ed;
s = PF_VarString(pr, 0);
Con_Printf ("======OBJECT ERROR in %s:\n%s\n", PR_Str(pr, pr->xfunction->s_name),s);
ed = PROG_TO_EDICT(pr, pr->global_struct->self);
ED_Print (pr, 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)
==============
*/
static void
PF_makevectors(pr_t *pr)
{
AngleVectors (G_VECTOR(pr, 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(pr_t *pr)
{
edict_t *e;
float *org;
e = G_EDICT(pr, OFS_PARM0);
org = G_VECTOR(pr, OFS_PARM1);
VectorCopy (org, e->v.origin);
SV_LinkEdict (e, false);
}
static void
SetMinMaxSize(pr_t *pr, edict_t *e, float *min, float *max, bool 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 (pr, "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] = Q_MAXFLOAT;
rmax[0] = rmax[1] = rmax[2] = -Q_MAXFLOAT;
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)
=================
*/
static void
PF_setsize(pr_t *pr)
{
edict_t *e;
float *min, *max;
e = G_EDICT(pr, OFS_PARM0);
min = G_VECTOR(pr, OFS_PARM1);
max = G_VECTOR(pr, OFS_PARM2);
SetMinMaxSize (pr, e, min, max, false);
}
/*
=================
PF_setmodel
setmodel(entity, model)
=================
*/
static void
PF_setmodel(pr_t *pr)
{
edict_t *e;
char *m, **check;
model_t *mod;
int i;
e = G_EDICT(pr, OFS_PARM0);
m = G_STRING(pr, 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 (pr, "no precache: %s\n", m);
e->v.model = PR_SetStr(pr, m);
e->v.modelindex = i; //SV_ModelIndex (m);
mod = sv.models[ (int)e->v.modelindex]; // Mod_ForName (m, true);
if(!mod)
SetMinMaxSize (pr, e, vec3_origin, vec3_origin, true);
else
SetMinMaxSize (pr, e, mod->mins, mod->maxs, true);
}
/*
=================
PF_bprint
broadcast print to everyone on server
bprint(value)
=================
*/
static void
PF_bprint(pr_t *pr)
{
char *s;
s = PF_VarString(pr, 0);
SV_BroadcastPrintf ("%s", s);
}
/*
=================
PF_sprint
single print to a specific client
sprint(clientent, value)
=================
*/
static void
PF_sprint(pr_t *pr)
{
char *s;
client_t *client;
int entnum;
entnum = G_EDICTNUM(pr, OFS_PARM0);
s = PF_VarString(pr, 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(pr_t *pr)
{
char *s;
client_t *client;
int entnum;
entnum = G_EDICTNUM(pr, OFS_PARM0);
s = PF_VarString(pr, 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(pr_t *pr)
{
float *v;
vec3_t newvalue;
double ln, a, b, c;
v = G_VECTOR(pr, OFS_PARM0);
a = v[0];
b = v[1];
c = v[2];
ln = sqrt(a*a + b*b + c*c);
if(ln == 0)
newvalue[0] = newvalue[1] = newvalue[2] = 0;
else{
newvalue[0] = a / ln;
newvalue[1] = b / ln;
newvalue[2] = c / ln;
}
VectorCopy(newvalue, G_VECTOR(pr, OFS_RETURN));
}
/*
=================
PF_vlen
scalar vlen(vector)
=================
*/
static void
PF_vlen(pr_t *pr)
{
float *v;
double a, b, c;
v = G_VECTOR(pr, OFS_PARM0);
a = v[0];
b = v[1];
c = v[2];
G_FLOAT(pr, OFS_RETURN) = sqrt(a*a + b*b + c*c);
}
/*
=================
PF_vectoyaw
float vectoyaw(vector)
=================
*/
static void
PF_vectoyaw(pr_t *pr)
{
float *value1;
float yaw;
value1 = G_VECTOR(pr, OFS_PARM0);
if (value1[1] == 0 && value1[0] == 0)
yaw = 0;
else
{
yaw = atan2(value1[1], value1[0]) * 180.0 / M_PI;
if (yaw < 0)
yaw += 360;
}
G_FLOAT(pr, OFS_RETURN) = yaw;
}
/*
=================
PF_vectoangles
vector vectoangles(vector)
=================
*/
static void
PF_vectoangles(pr_t *pr)
{
float *value1;
double forward;
double yaw, pitch;
value1 = G_VECTOR(pr, OFS_PARM0);
if (value1[1] == 0 && value1[0] == 0)
{
yaw = 0;
if (value1[2] > 0)
pitch = 90;
else
pitch = 270;
}
else
{
yaw = atan2(value1[1], value1[0]) * 180.0 / M_PI;
if (yaw < 0)
yaw += 360;
forward = sqrt (value1[0]*value1[0] + value1[1]*value1[1]);
pitch = atan2(value1[2], forward) * 180 / M_PI;
if (pitch < 0)
pitch += 360;
}
G_FLOAT(pr, OFS_RETURN+0) = pitch;
G_FLOAT(pr, OFS_RETURN+1) = yaw;
G_FLOAT(pr, OFS_RETURN+2) = 0;
}
/*
=================
PF_Random
Returns a number from 0<= num < 1
random()
=================
*/
static void
PF_random(pr_t *pr)
{
static double xmax;
static long xand;
if(xand == 0){
if((RAND_MAX & ((ulong)RAND_MAX+1)) == 0){
xmax = (ulong)RAND_MAX+1;
xand = RAND_MAX;
}else{
xmax = 0x8000;
xand = 0x7fff;
}
}
G_FLOAT(pr, OFS_RETURN) = ((double)(rand() & xand) + 0.5) / xmax;
}
/*
=================
PF_particle
particle(origin, color, count)
=================
*/
static void
PF_particle(pr_t *pr)
{
float *org, *dir;
float color;
float count;
org = G_VECTOR(pr, OFS_PARM0);
dir = G_VECTOR(pr, OFS_PARM1);
color = G_FLOAT(pr, OFS_PARM2);
count = G_FLOAT(pr, OFS_PARM3);
SV_StartParticle (org, dir, color, count);
}
/*
=================
PF_ambientsound
=================
*/
static void
PF_ambientsound(pr_t *pr)
{
char **check;
char *samp;
float *pos;
float vol, attenuation;
int i, soundnum;
pos = G_VECTOR(pr, OFS_PARM0);
samp = G_STRING(pr, OFS_PARM1);
vol = G_FLOAT(pr, OFS_PARM2);
attenuation = G_FLOAT(pr, 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
if(soundnum >= sv.protocol->limit_sound)
return;
SV_SignonFrame();
MSG_WriteByte(
sv.signon,
soundnum < sv.protocol->large_sound ?
svc_spawnstaticsound :
svc_spawnstaticsound2
);
for (i=0 ; i<3 ; i++)
sv.protocol->MSG_WriteCoord(sv.signon, pos[i]);
(soundnum < sv.protocol->large_sound ? MSG_WriteByte : MSG_WriteShort)(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
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(pr_t *pr)
{
char *sample;
int channel;
edict_t *entity;
int volume;
float attenuation;
entity = G_EDICT(pr, OFS_PARM0);
channel = G_FLOAT(pr, OFS_PARM1);
sample = G_STRING(pr, OFS_PARM2);
volume = G_FLOAT(pr, OFS_PARM3) * 255;
attenuation = G_FLOAT(pr, OFS_PARM4);
if (volume < 0 || volume > 255)
fatal ("SV_StartSound: volume = %d", volume);
if (attenuation < 0 || attenuation > 4)
fatal ("SV_StartSound: attenuation = %f", attenuation);
if (channel < 0 || channel > 7)
fatal ("SV_StartSound: channel = %d", channel);
SV_StartSound (entity, channel, sample, volume, attenuation);
}
/*
=================
PF_break
break()
=================
*/
static void
PF_break(pr_t *pr)
{
USED(pr);
Con_Printf("break statement\n");
assert(nil);
// PR_RunError (pr, "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(pr_t *pr)
{
float *v1, *v2;
trace_t trace;
int nomonsters;
edict_t *ent;
v1 = G_VECTOR(pr, OFS_PARM0);
v2 = G_VECTOR(pr, OFS_PARM1);
nomonsters = G_FLOAT(pr, OFS_PARM2);
ent = G_EDICT(pr, 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(pr, trace.ent);
else
pr->global_struct->trace_ent = EDICT_TO_PROG(pr, pr->edicts);
}
//============================================================================
static byte *checkpvs;
static int checkpvs_size;
static int
PF_newcheckclient(pr_t *pr, int check)
{
int i, size;
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(pr, 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, &size);
if(checkpvs == nil || size > checkpvs_size){
checkpvs = realloc(checkpvs, size);
checkpvs_size = size;
}
memcpy (checkpvs, pvs, size);
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 void
PF_checkclient(pr_t *pr)
{
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 (pr, sv.lastcheck);
sv.lastchecktime = sv.time;
}
// return check if it might be visible
ent = EDICT_NUM(pr, sv.lastcheck);
if (ent->free || ent->v.health <= 0)
{
RETURN_EDICT(pr, pr->edicts);
return;
}
// if current entity can't possibly see the check entity, return 0
self = PROG_TO_EDICT(pr, 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)) ) )
{
RETURN_EDICT(pr, pr->edicts);
return;
}
// might be able to see it
RETURN_EDICT(pr, ent);
}
//============================================================================
/*
=================
PF_stuffcmd
Sends text over to the client's execution buffer
stuffcmd (clientent, value)
=================
*/
static void
PF_stuffcmd(pr_t *pr)
{
int entnum;
char *str;
client_t *old;
entnum = G_EDICTNUM(pr, OFS_PARM0);
if (entnum < 1 || entnum > svs.maxclients)
PR_RunError (pr, "Parm 0 not a client");
str = G_STRING(pr, 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(pr_t *pr)
{
char *str;
str = G_STRING(pr, OFS_PARM0);
Cbuf_AddText (str);
}
/*
=================
PF_cvar
float cvar (string)
=================
*/
static void
PF_cvar(pr_t *pr)
{
char *str;
str = G_STRING(pr, OFS_PARM0);
G_FLOAT(pr, OFS_RETURN) = Cvar_VariableValue (str);
}
/*
=================
PF_cvar_set
float cvar (string)
=================
*/
static void
PF_cvar_set(pr_t *pr)
{
char *var, *val;
var = G_STRING(pr, OFS_PARM0);
val = G_STRING(pr, OFS_PARM1);
setcvar (var, val);
}
/*
=================
PF_findradius
Returns a chain of entities that have origins within a spherical area
findradius (origin, radius)
=================
*/
static void
PF_findradius(pr_t *pr)
{
edict_t *ent, *chain;
float rad;
float *org;
vec3_t eorg;
int i, j;
chain = (edict_t *)pr->edicts;
org = G_VECTOR(pr, OFS_PARM0);
rad = G_FLOAT(pr, OFS_PARM1);
ent = NEXT_EDICT(pr, pr->edicts);
for (i=1 ; i<pr->num_edicts ; i++, ent = NEXT_EDICT(pr, 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(pr, chain);
chain = ent;
}
RETURN_EDICT(pr, chain);
}
static void
PF_dprint(pr_t *pr)
{
Con_DPrintf("%s", PF_VarString(pr, 0));
}
static void
PF_ftos(pr_t *pr)
{
float v;
char *s;
v = G_FLOAT(pr, OFS_PARM0);
s = PR_StrTmp(pr);
if (v == (int)v)
sprint (s, "%d",(int)v);
else
sprint (s, "%5.1f",v);
G_INT(pr, OFS_RETURN) = PR_SetStr(pr, s);
}
static void
PF_fabs(pr_t *pr)
{
float v;
v = G_FLOAT(pr, OFS_PARM0);
G_FLOAT(pr, OFS_RETURN) = fabs(v);
}
static void
PF_vtos(pr_t *pr)
{
char *s;
s = PR_StrTmp(pr);
sprint (s, "'%5.1f %5.1f %5.1f'", G_VECTOR(pr, OFS_PARM0)[0], G_VECTOR(pr, OFS_PARM0)[1], G_VECTOR(pr, OFS_PARM0)[2]);
G_INT(pr, OFS_RETURN) = PR_SetStr(pr, s);
}
static void
PF_Spawn(pr_t *pr)
{
edict_t *ed;
ed = ED_Alloc(pr);
RETURN_EDICT(pr, ed);
}
static void
PF_Remove(pr_t *pr)
{
edict_t *ed;
ed = G_EDICT(pr, OFS_PARM0);
ED_Free (ed);
}
// entity (entity start, .string field, string match) find = #5;
static void
PF_Find(pr_t *pr)
{
int e;
int f;
char *s, *t;
edict_t *ed;
e = G_EDICTNUM(pr, OFS_PARM0);
f = G_INT(pr, OFS_PARM1);
s = G_STRING(pr, OFS_PARM2);
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;
t = E_STRING(pr, ed, f);
if (!t)
continue;
if (!strcmp(t, s))
{
RETURN_EDICT(pr, ed);
return;
}
}
RETURN_EDICT(pr, pr->edicts);
}
static void
PR_CheckEmptyString(pr_t *pr, char *s)
{
if (s[0] <= ' ')
PR_RunError (pr, "Bad string");
}
static bool
CloseEnough(edict_t *ent, edict_t *goal, float dist)
{
int i;
for (i=0 ; i<3 ; i++)
{
if (goal->v.absmin[i] > ent->v.absmax[i] + dist)
return false;
if (goal->v.absmax[i] < ent->v.absmin[i] - dist)
return false;
}
return true;
}
bool SV_StepDirection (edict_t *ent, float yaw, float dist);
void SV_NewChaseDir (edict_t *actor, edict_t *enemy, float dist);