prvm_cmds.c

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// AK
// Basically every vm builtin cmd should be in here.
// All 3 builtin and extension lists can be found here
// cause large (I think they will) parts are from pr_cmds the same copyright like in pr_cmds
// also applies here
 
#include "quakedef.h"
 
#include "prvm_cmds.h"
#include "libcurl.h"
#include <time.h>
 
#include "cl_collision.h"
#include "clvm_cmds.h"
#include "csprogs.h"
#include "ft2.h"
#include "mdfour.h"
 
extern cvar_t prvm_backtraceforwarnings;
#ifdef USEODE
extern dllhandle_t ode_dll;
#endif
 
// LadyHavoc: changed this to NOT use a return statement, so that it can be used in functions that must return a value
void VM_Warning(prvm_prog_t *prog, const char *fmt, ...)
{
    va_list argptr;
    char msg[MAX_INPUTLINE];
    static double recursive = -1;
    int outfd = sys.outfd;
 
    // set output to stderr
    sys.outfd = fileno(stderr);
 
    va_start(argptr,fmt);
    dpvsnprintf(msg,sizeof(msg),fmt,argptr);
    va_end(argptr);
 
    Con_Printf(CON_WARN "%s VM warning: %s", prog->name, msg);
 
    // TODO: either add a cvar/cmd to control the state dumping or replace some of the calls with Con_Printf [9/13/2006 Black]
    if(prvm_backtraceforwarnings.integer && recursive != host.realtime) // NOTE: this compares to the time, just in case if PRVM_PrintState causes a Host_Error and keeps recursive set
    {
        recursive = host.realtime;
        PRVM_PrintState(prog, 0);
        recursive = -1;
    }
 
    // restore configured outfd
    sys.outfd = outfd;
}
 
 
//============================================================================
// Common
 
// TODO DONE: move vm_files and vm_fssearchlist to prvm_prog_t struct
// TODO: move vm_files and vm_fssearchlist back [9/13/2006 Black]
// TODO: (move vm_files and vm_fssearchlist to prvm_prog_t struct again) [2007-01-23 LadyHavoc]
// TODO: will this war ever end? [2007-01-23 LadyHavoc]
 
void VM_CheckEmptyString(prvm_prog_t *prog, const char *s)
{
    if (ISWHITESPACE(s[0]))
        prog->error_cmd("%s: Bad string", prog->name);
}
 
qbool PRVM_ConsoleCommand(prvm_prog_t *prog, const char *text, size_t textlen, int *func, qbool preserve_self, int curself, double ptime, const char *error_message)
{
    int restorevm_tempstringsbuf_cursize;
    int save_self = 0; // hush compiler warning
    qbool r = false;
 
    if(!prog->loaded)
        return false;
 
    if(func)
    {
        if(preserve_self)
            save_self = PRVM_gameglobaledict(self);
        if(ptime)
            PRVM_gameglobalfloat(time) = ptime;
        PRVM_gameglobaledict(self) = curself;
        restorevm_tempstringsbuf_cursize = prog->tempstringsbuf.cursize;
        PRVM_G_INT(OFS_PARM0) = PRVM_SetTempString(prog, text, textlen);
        prog->ExecuteProgram(prog, *func, error_message);
        prog->tempstringsbuf.cursize = restorevm_tempstringsbuf_cursize;
        if(preserve_self)
            PRVM_gameglobaledict(self) = save_self;
        r = (int) PRVM_G_FLOAT(OFS_RETURN) != 0;
    }
 
    return r;
}
 
void VM_GenerateFrameGroupBlend(prvm_prog_t *prog, framegroupblend_t *framegroupblend, const prvm_edict_t *ed)
{
    // self.frame is the interpolation target (new frame)
    // self.frame1time is the animation base time for the interpolation target
    // self.frame2 is the interpolation start (previous frame)
    // self.frame2time is the animation base time for the interpolation start
    // self.lerpfrac is the interpolation strength for self.frame2
    // self.lerpfrac3 is the interpolation strength for self.frame3
    // self.lerpfrac4 is the interpolation strength for self.frame4
    // pitch angle on a player model where the animator set up 5 sets of
    // animations and the csqc simply lerps between sets)
    framegroupblend[0].frame = (int) PRVM_gameedictfloat(ed, frame     );
    framegroupblend[1].frame = (int) PRVM_gameedictfloat(ed, frame2    );
    framegroupblend[2].frame = (int) PRVM_gameedictfloat(ed, frame3    );
    framegroupblend[3].frame = (int) PRVM_gameedictfloat(ed, frame4    );
    framegroupblend[0].start =       PRVM_gameedictfloat(ed, frame1time);
    framegroupblend[1].start =       PRVM_gameedictfloat(ed, frame2time);
    framegroupblend[2].start =       PRVM_gameedictfloat(ed, frame3time);
    framegroupblend[3].start =       PRVM_gameedictfloat(ed, frame4time);
    framegroupblend[1].lerp  =       PRVM_gameedictfloat(ed, lerpfrac  );
    framegroupblend[2].lerp  =       PRVM_gameedictfloat(ed, lerpfrac3 );
    framegroupblend[3].lerp  =       PRVM_gameedictfloat(ed, lerpfrac4 );
    // assume that the (missing) lerpfrac1 is whatever remains after lerpfrac2+lerpfrac3+lerpfrac4 are summed
    framegroupblend[0].lerp = 1 - framegroupblend[1].lerp - framegroupblend[2].lerp - framegroupblend[3].lerp;
}
 
// LadyHavoc: quite tempting to break apart this function to reuse the
//            duplicated code, but I suspect it is better for performance
//            this way
void VM_FrameBlendFromFrameGroupBlend(frameblend_t *frameblend, const framegroupblend_t *framegroupblend, const model_t *model, double curtime)
{
    int sub2, numframes, f, i, k;
    int isfirstframegroup = true;
    int nolerp;
    double sublerp, lerp, d;
    const animscene_t *scene;
    const framegroupblend_t *g;
    frameblend_t *blend = frameblend;
 
    memset(blend, 0, MAX_FRAMEBLENDS * sizeof(*blend));
 
    // rpolzer: Not testing isanimated here - a model might have
    // "animations" that move no vertices (but only bones), thus rendering
    // may assume it's not animated while processing can't.
    if (!model)
    {
        blend[0].lerp = 1;
        return;
    }
 
    nolerp = ((model->type == mod_sprite) ? !r_lerpsprites.integer : !r_lerpmodels.integer) || (model->nolerp == true);
    numframes = model->numframes;
    for (k = 0, g = framegroupblend;k < MAX_FRAMEGROUPBLENDS;k++, g++)
    {
        f = g->frame;
        if ((unsigned int)f >= (unsigned int)numframes)
        {
            if (developer_extra.integer)
                Con_DPrintf("VM_FrameBlendFromFrameGroupBlend: no such frame %d in model %s\n", f, model->name);
            f = 0;
        }
        d = lerp = g->lerp;
        if (lerp <= 0)
            continue;
        if (nolerp)
        {
            if (isfirstframegroup)
            {
                d = lerp = 1;
                isfirstframegroup = false;
            }
            else
                continue;
        }
        if (model->animscenes)
        {
            scene = model->animscenes + f;
            f = scene->firstframe;
            if (scene->framecount > 1)
            {
                // this code path is only used on .zym models and torches
                sublerp = scene->framerate * (curtime - g->start);
                f = (int) floor(sublerp);
                sublerp -= f;
                sub2 = f + 1;
                if (sublerp < (1.0 / 65536.0f))
                    sublerp = 0;
                if (sublerp > (65535.0f / 65536.0f))
                    sublerp = 1;
                if (nolerp)
                    sublerp = 0;
                if (scene->loop)
                {
                    f = (f % scene->framecount);
                    sub2 = (sub2 % scene->framecount);
                }
                f = bound(0, f, (scene->framecount - 1)) + scene->firstframe;
                sub2 = bound(0, sub2, (scene->framecount - 1)) + scene->firstframe;
                d = sublerp * lerp;
                // two framelerps produced from one animation
                if (d > 0)
                {
                    for (i = 0;i < MAX_FRAMEBLENDS;i++)
                    {
                        if (blend[i].lerp <= 0 || blend[i].subframe == sub2)
                        {
                            blend[i].subframe = sub2;
                            blend[i].lerp += d;
                            break;
                        }
                    }
                }
                d = (1 - sublerp) * lerp;
            }
        }
        if (d > 0)
        {
            for (i = 0;i < MAX_FRAMEBLENDS;i++)
            {
                if (blend[i].lerp <= 0 || blend[i].subframe == f)
                {
                    blend[i].subframe = f;
                    blend[i].lerp += d;
                    break;
                }
            }
        }
    }
}
 
void VM_UpdateEdictSkeleton(prvm_prog_t *prog, prvm_edict_t *ed, const model_t *edmodel, const frameblend_t *frameblend)
{
    if (ed->priv.server->skeleton.model != edmodel)
    {
        VM_RemoveEdictSkeleton(prog, ed);
        ed->priv.server->skeleton.model = edmodel;
    }
    if (!ed->priv.server->skeleton.model || !ed->priv.server->skeleton.model->num_bones)
    {
        if(ed->priv.server->skeleton.relativetransforms)
            Mem_Free(ed->priv.server->skeleton.relativetransforms);
        ed->priv.server->skeleton.relativetransforms = NULL;
        return;
    }
 
    {
        int skeletonindex = -1;
        skeleton_t *skeleton;
        skeletonindex = (int)PRVM_gameedictfloat(ed, skeletonindex) - 1;
        if (skeletonindex >= 0 && skeletonindex < MAX_EDICTS && (skeleton = prog->skeletons[skeletonindex]) && skeleton->model->num_bones == ed->priv.server->skeleton.model->num_bones)
        {
            // custom skeleton controlled by the game (FTE_CSQC_SKELETONOBJECTS)
            if (!ed->priv.server->skeleton.relativetransforms)
                ed->priv.server->skeleton.relativetransforms = (matrix4x4_t *)Mem_Alloc(prog->progs_mempool, ed->priv.server->skeleton.model->num_bones * sizeof(matrix4x4_t));
            memcpy(ed->priv.server->skeleton.relativetransforms, skeleton->relativetransforms, ed->priv.server->skeleton.model->num_bones * sizeof(matrix4x4_t));
        }
        else
        {
            if(ed->priv.server->skeleton.relativetransforms)
                Mem_Free(ed->priv.server->skeleton.relativetransforms);
            ed->priv.server->skeleton.relativetransforms = NULL;
        }
    }
}
 
void VM_RemoveEdictSkeleton(prvm_prog_t *prog, prvm_edict_t *ed)
{
    if (ed->priv.server->skeleton.relativetransforms)
        Mem_Free(ed->priv.server->skeleton.relativetransforms);
    memset(&ed->priv.server->skeleton, 0, sizeof(ed->priv.server->skeleton));
}
 
 
 
 
//============================================================================
//BUILT-IN FUNCTIONS
 
#ifdef WIN32
    // memccpy() is standard in POSIX.1-2001, POSIX.1-2008, SVr4, 4.3BSD, C23.
    // Microsoft supports it, but apparently complains if we use it.
    #undef memccpy
    #define memccpy _memccpy
#endif
size_t VM_VarString(prvm_prog_t *prog, int first, char *out, size_t outsize)
{
    int i;
    const char *s;
    char *p;
    char *outend = out + outsize - 1;
 
    // bones_was_here: && out < outend improves perf significantly in some tests that don't trigger the warning,
    // which seems odd, surely it would only help when the warning is printed?
    for (i = first;i < prog->argc && out < outend;i++)
    {
        s = PRVM_G_STRING((OFS_PARM0+i*3));
        if (*s)
        {
            // like dp_stpecpy but with a VM_Warning for use with `prvm_backtraceforwarnings 1`
            p = (char *)memccpy(out, s, '\0', (outend + 1) - out);
            if (p)
                out = p - 1;
            else
            {
                VM_Warning(prog, "%lu of %lu bytes available, will truncate %lu byte string \"%s\"\n", (unsigned long)(outend - out), (unsigned long)outsize - 1, (unsigned long)strlen(s), s);
                out = outend;
                *out = '\0';
            }
        }
        else
            *out = '\0';
    }
 
    return outsize - ((outend + 1) - out);
}
 
/*
=================
VM_checkextension
 
returns true if the extension is supported by the server
 
checkextension(extensionname)
=================
*/
 
// kind of helper function
static qbool checkextension(prvm_prog_t *prog, const char *name)
{
    const char **e;
 
    for (e = prog->extensionstring;*e;e++)
    {
        if(!strcasecmp(*e, name))
        {
#ifdef USEODE
            // special sheck for ODE
            if (!strncasecmp("DP_PHYSICS_ODE", name, 14))
            {
#ifndef LINK_TO_LIBODE
                return ode_dll ? true : false;
#else
#ifdef LINK_TO_LIBODE
                return true;
#else
                return false;
#endif
#endif
            }
#endif
 
            // special sheck for d0_blind_id
            if (!strcasecmp("DP_CRYPTO", name))
                return Crypto_Available();
            if (!strcasecmp("DP_QC_DIGEST_SHA256", name))
                return Crypto_Available();
 
            // special shreck for libcurl
            if (!strcasecmp("DP_QC_URI_GET", name) || !strcasecmp("DP_QC_URI_POST", name))
                return Curl_Available();
 
            return true;
        }
    }
    return false;
}
 
void VM_checkextension(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_checkextension);
 
    PRVM_G_FLOAT(OFS_RETURN) = checkextension(prog, PRVM_G_STRING(OFS_PARM0));
}
 
/*
=================
VM_error
 
This is a TERMINAL error, which will kill off the entire prog.
Dumps self.
 
error(value)
=================
*/
void VM_error(prvm_prog_t *prog)
{
    prvm_edict_t    *ed;
    char string[VM_TEMPSTRING_MAXSIZE];
 
    VM_VarString(prog, 0, string, sizeof(string));
    Con_Printf(CON_ERROR "======%s ERROR in %s:\n%s\n", prog->name, PRVM_GetString(prog, prog->xfunction->s_name), string);
    ed = PRVM_PROG_TO_EDICT(PRVM_allglobaledict(self));
    PRVM_ED_Print(prog, ed, NULL);
 
    prog->error_cmd("%s: Program error in function %s:\n%s\nTip: read above for entity information\n", prog->name, PRVM_GetString(prog, prog->xfunction->s_name), string);
}
 
/*
=================
VM_objerror
 
Dumps out self, then an error message.  The program is aborted and self is
removed, but the level can continue.
 
objerror(value)
=================
*/
void VM_objerror(prvm_prog_t *prog)
{
    prvm_edict_t    *ed;
    char string[VM_TEMPSTRING_MAXSIZE];
 
    VM_VarString(prog, 0, string, sizeof(string));
    Con_Printf(CON_ERROR "======OBJECT ERROR======\n"); // , prog->name, PRVM_GetString(prog->xfunction->s_name), string); // or include them? FIXME
    ed = PRVM_PROG_TO_EDICT(PRVM_allglobaledict(self));
    PRVM_ED_Print(prog, ed, NULL);
    PRVM_ED_Free (prog, ed);
    Con_Printf(CON_ERROR "%s OBJECT ERROR in %s:\n%s\nTip: read above for entity information\n", prog->name, PRVM_GetString(prog, prog->xfunction->s_name), string);
}
 
/*
=================
VM_print
 
print to console
 
print(...[string])
=================
*/
void VM_print(prvm_prog_t *prog)
{
    char string[VM_TEMPSTRING_MAXSIZE];
 
    VM_VarString(prog, 0, string, sizeof(string));
    Con_Print(string);
}
 
/*
=================
VM_bprint
 
broadcast print to everyone on server
 
bprint(...[string])
=================
*/
void VM_bprint(prvm_prog_t *prog)
{
    char string[VM_TEMPSTRING_MAXSIZE];
 
    if(!sv.active)
    {
        VM_Warning(prog, "VM_bprint: server is not active!\n");
        return;
    }
 
    VM_VarString(prog, 0, string, sizeof(string));
    SV_BroadcastPrint(string);
}
 
/*
=================
VM_sprint (menu & client but only if server.active == true)
 
single print to a specific client
 
sprint(float clientnum,...[string])
=================
*/
void VM_sprint(prvm_prog_t *prog)
{
    client_t    *client;
    int         clientnum;
    char string[VM_TEMPSTRING_MAXSIZE];
 
    VM_SAFEPARMCOUNTRANGE(1, 8, VM_sprint);
 
    //find client for this entity
    clientnum = (int)PRVM_G_FLOAT(OFS_PARM0);
    if (!sv.active  || clientnum < 0 || clientnum >= svs.maxclients || !svs.clients[clientnum].active)
    {
        VM_Warning(prog, "VM_sprint: invalid client or server is not active!\n");
        return;
    }
 
    client = svs.clients + clientnum;
    if (!client->netconnection)
        return;
 
    VM_VarString(prog, 1, string, sizeof(string));
    MSG_WriteChar(&client->netconnection->message,svc_print);
    MSG_WriteString(&client->netconnection->message, string);
}
 
/*
=================
VM_centerprint
 
single print to the screen
 
centerprint(value)
=================
*/
void VM_centerprint(prvm_prog_t *prog)
{
    char string[VM_TEMPSTRING_MAXSIZE];
 
    VM_SAFEPARMCOUNTRANGE(1, 8, VM_centerprint);
    VM_VarString(prog, 0, string, sizeof(string));
    SCR_CenterPrint(string);
}
 
/*
=================
VM_normalize
 
vector normalize(vector)
=================
*/
void VM_normalize(prvm_prog_t *prog)
{
    prvm_vec_t  *value1;
    vec3_t  newvalue;
    double  f;
 
    VM_SAFEPARMCOUNT(1,VM_normalize);
 
    value1 = PRVM_G_VECTOR(OFS_PARM0);
 
    f = VectorLength2(value1);
    if (f)
    {
        f = 1.0 / sqrt(f);
        VectorScale(value1, f, newvalue);
    }
    else
        VectorClear(newvalue);
 
    VectorCopy (newvalue, PRVM_G_VECTOR(OFS_RETURN));
}
 
/*
=================
VM_vlen
 
scalar vlen(vector)
=================
*/
void VM_vlen(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_vlen);
    PRVM_G_FLOAT(OFS_RETURN) = VectorLength(PRVM_G_VECTOR(OFS_PARM0));
}
 
/*
=================
VM_vectoyaw
 
float vectoyaw(vector)
=================
*/
void VM_vectoyaw(prvm_prog_t *prog)
{
    prvm_vec_t  *value1;
    prvm_vec_t  yaw;
 
    VM_SAFEPARMCOUNT(1,VM_vectoyaw);
 
    value1 = PRVM_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;
    }
 
    PRVM_G_FLOAT(OFS_RETURN) = yaw;
}
 
 
/*
=================
VM_vectoangles
 
vector vectoangles(vector[, vector])
=================
*/
void VM_vectoangles(prvm_prog_t *prog)
{
    vec3_t result, forward, up;
    VM_SAFEPARMCOUNTRANGE(1, 2,VM_vectoangles);
 
    VectorCopy(PRVM_G_VECTOR(OFS_PARM0), forward);
    if (prog->argc >= 2)
    {
        VectorCopy(PRVM_G_VECTOR(OFS_PARM1), up);
        AnglesFromVectors(result, forward, up, true);
    }
    else
        AnglesFromVectors(result, forward, NULL, true);
    VectorCopy(result, PRVM_G_VECTOR(OFS_RETURN));
}
 
/*
=================
VM_random
 
Returns a random number > 0 and < 1
 
float random()
=================
*/
void VM_random(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0,VM_random);
 
    PRVM_G_FLOAT(OFS_RETURN) = lhrandom(0, 1);
}
 
/*
=========
VM_localsound
 
localsound(string sample, float chan, float vol)
=========
*/
void VM_localsound(prvm_prog_t *prog)
{
    const char *s;
    float chan, vol;
 
    VM_SAFEPARMCOUNTRANGE(1, 3,VM_localsound);
 
    s = PRVM_G_STRING(OFS_PARM0);
    if(prog->argc == 3)
    {
        chan = PRVM_G_FLOAT(OFS_PARM1);
        vol = PRVM_G_FLOAT(OFS_PARM2) == 0 ? 1 : PRVM_G_FLOAT(OFS_PARM2);
        if(!S_LocalSoundEx(s, chan, vol))
        {
            PRVM_G_FLOAT(OFS_RETURN) = -4;
            VM_Warning(prog, "VM_localsound: Failed to play %s !\n", s);
            return;
        }
    }
    else if(!S_LocalSound (s))
    {
        PRVM_G_FLOAT(OFS_RETURN) = -4;
        VM_Warning(prog, "VM_localsound: Failed to play %s !\n", s);
        return;
    }
 
    PRVM_G_FLOAT(OFS_RETURN) = 1;
}
 
/*
=================
VM_break
 
break()
=================
*/
void VM_break(prvm_prog_t *prog)
{
    prog->error_cmd("%s: break statement", prog->name);
}
 
//============================================================================
 
/*
=================
VM_localcmd
 
Appends text to the command buffer
 
[localcmd (string, ...) or]
cmd (string, ...)
=================
*/
void VM_localcmd(prvm_prog_t *prog)
{
    char string[VM_TEMPSTRING_MAXSIZE];
    VM_SAFEPARMCOUNTRANGE(1, 8, VM_localcmd);
    VM_VarString(prog, 0, string, sizeof(string));
    Cbuf_AddText(cmd_local, string);
}
 
static qbool PRVM_Cvar_ReadOk(prvm_prog_t *prog, const char *string)
{
    cvar_t *cvar;
    cvar = Cvar_FindVar(prog->console_cmd->cvars, string, prog->console_cmd->cvars_flagsmask);
    return ((cvar) && ((cvar->flags & CF_PRIVATE) == 0));
}
 
/*
=================
VM_cvar
 
float cvar (string)
=================
*/
void VM_cvar(prvm_prog_t *prog)
{
    char string[VM_TEMPSTRING_MAXSIZE];
    VM_SAFEPARMCOUNTRANGE(1,8,VM_cvar);
    VM_VarString(prog, 0, string, sizeof(string));
    VM_CheckEmptyString(prog, string);
    PRVM_G_FLOAT(OFS_RETURN) = PRVM_Cvar_ReadOk(prog, string) ? Cvar_VariableValue(prog->console_cmd->cvars, string, prog->console_cmd->cvars_flagsmask) : 0;
}
 
/*
=================
VM_cvar
 
float cvar_type (string)
float CVAR_TYPEFLAG_EXISTS = 1;
float CVAR_TYPEFLAG_SAVED = 2;
float CVAR_TYPEFLAG_PRIVATE = 4;
float CVAR_TYPEFLAG_ENGINE = 8;
float CVAR_TYPEFLAG_HASDESCRIPTION = 16;
float CVAR_TYPEFLAG_READONLY = 32;
=================
*/
void VM_cvar_type(prvm_prog_t *prog)
{
    char string[VM_TEMPSTRING_MAXSIZE];
    cvar_t *cvar;
    int ret;
 
    VM_SAFEPARMCOUNTRANGE(1, 8, VM_cvar_type);
    VM_VarString(prog, 0, string, sizeof(string));
    VM_CheckEmptyString(prog, string);
    cvar = Cvar_FindVar(prog->console_cmd->cvars, string, prog->console_cmd->cvars_flagsmask);
 
 
    if(!cvar)
    {
        PRVM_G_FLOAT(OFS_RETURN) = 0;
        return; // CVAR_TYPE_NONE
    }
 
    ret = 1; // CVAR_EXISTS
    if(cvar->flags & CF_ARCHIVE)
        ret |= 2; // CVAR_TYPE_SAVED
    if(cvar->flags & CF_PRIVATE)
        ret |= 4; // CVAR_TYPE_PRIVATE
    if(!(cvar->flags & CF_ALLOCATED))
        ret |= 8; // CVAR_TYPE_ENGINE
    if(cvar->description != cvar_dummy_description)
        ret |= 16; // CVAR_TYPE_HASDESCRIPTION
    if(cvar->flags & CF_READONLY)
        ret |= 32; // CVAR_TYPE_READONLY
    
    PRVM_G_FLOAT(OFS_RETURN) = ret;
}
 
/*
=================
VM_cvar_string
 
const string    VM_cvar_string (string, ...)
=================
*/
void VM_cvar_string(prvm_prog_t *prog)
{
    char cvar_name[VM_TEMPSTRING_MAXSIZE];
 
    VM_SAFEPARMCOUNTRANGE(1,8,VM_cvar_string);
    VM_VarString(prog, 0, cvar_name, sizeof(cvar_name));
    VM_CheckEmptyString(prog, cvar_name);
    if (PRVM_Cvar_ReadOk(prog, cvar_name))
    {
        const char *cvar_string = Cvar_VariableString(prog->console_cmd->cvars, cvar_name, prog->console_cmd->cvars_flagsmask);
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, cvar_string, strlen(cvar_string));
    }
    else
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, "", 0);
}
 
 
/*
========================
VM_cvar_defstring
 
const string    VM_cvar_defstring (string, ...)
========================
*/
void VM_cvar_defstring(prvm_prog_t *prog)
{
    char cvar_name[VM_TEMPSTRING_MAXSIZE];
    const char *cvar_defstring;
 
    VM_SAFEPARMCOUNTRANGE(1,8,VM_cvar_defstring);
    VM_VarString(prog, 0, cvar_name, sizeof(cvar_name));
    VM_CheckEmptyString(prog, cvar_name);
    cvar_defstring = Cvar_VariableDefString(prog->console_cmd->cvars, cvar_name, prog->console_cmd->cvars_flagsmask);
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, cvar_defstring, strlen(cvar_defstring));
}
 
/*
========================
VM_cvar_defstring
 
const string    VM_cvar_description (string, ...)
========================
*/
void VM_cvar_description(prvm_prog_t *prog)
{
    char cvar_name[VM_TEMPSTRING_MAXSIZE];
    const char *cvar_desc;
 
    VM_SAFEPARMCOUNTRANGE(1,8,VM_cvar_description);
    VM_VarString(prog, 0, cvar_name, sizeof(cvar_name));
    VM_CheckEmptyString(prog, cvar_name);
    cvar_desc = Cvar_VariableDescription(prog->console_cmd->cvars, cvar_name, prog->console_cmd->cvars_flagsmask);
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, cvar_desc, strlen(cvar_desc));
}
/*
=================
VM_cvar_set
 
void cvar_set (string,string, ...)
=================
*/
void VM_cvar_set(prvm_prog_t *prog)
{
    const char *name;
    char value[VM_TEMPSTRING_MAXSIZE];
    cvar_t *cvar;
 
    VM_SAFEPARMCOUNTRANGE(2,8,VM_cvar_set);
    name = PRVM_G_STRING(OFS_PARM0);
    VM_CheckEmptyString(prog, name);
    cvar = Cvar_FindVar(prog->console_cmd->cvars, name, prog->console_cmd->cvars_flagsmask);
    if (!cvar)
    {
        VM_Warning(prog, "VM_cvar_set: variable %s not found\n", name);
        return;
    }
    if (cvar->flags & CF_READONLY)
    {
        VM_Warning(prog, "VM_cvar_set: variable %s is read-only\n", cvar->name);
        return;
    }
    VM_VarString(prog, 1, value, sizeof(value));
    Cvar_SetQuick(cvar, value);
}
 
/*
=========
VM_dprint
 
dprint(...[string])
=========
*/
void VM_dprint(prvm_prog_t *prog)
{
    char string[VM_TEMPSTRING_MAXSIZE];
    VM_SAFEPARMCOUNTRANGE(1, 8, VM_dprint);
    VM_VarString(prog, 0, string, sizeof(string));
#if 1
    Con_DPrintf("%s", string);
#else
    Con_DPrintf("%s: %s", prog->name, string);
#endif
}
 
/*
=========
VM_ftos
 
string  ftos(float)
=========
*/
 
void VM_ftos(prvm_prog_t *prog)
{
    prvm_vec_t v;
    char s[128];
    size_t slen;
 
    VM_SAFEPARMCOUNT(1, VM_ftos);
 
    v = PRVM_G_FLOAT(OFS_PARM0);
 
    if ((prvm_vec_t)((prvm_int_t)v) == v)
        slen = dpsnprintf(s, sizeof(s), "%.0f", v);
    else
        slen = dpsnprintf(s, sizeof(s), "%f", v);
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, s, slen);
}
 
/*
=========
VM_fabs
 
float   fabs(float)
=========
*/
 
void VM_fabs(prvm_prog_t *prog)
{
    prvm_vec_t v;
 
    VM_SAFEPARMCOUNT(1,VM_fabs);
 
    v = PRVM_G_FLOAT(OFS_PARM0);
    PRVM_G_FLOAT(OFS_RETURN) = fabs(v);
}
 
/*
=========
VM_vtos
 
string  vtos(vector)
=========
*/
 
void VM_vtos(prvm_prog_t *prog)
{
    char s[512];
    size_t slen;
 
    VM_SAFEPARMCOUNT(1,VM_vtos);
 
    slen = dpsnprintf(s, sizeof(s), "'%5.1f %5.1f %5.1f'", PRVM_G_VECTOR(OFS_PARM0)[0], PRVM_G_VECTOR(OFS_PARM0)[1], PRVM_G_VECTOR(OFS_PARM0)[2]);
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, s, slen);
}
 
/*
=========
VM_etos
 
string  etos(entity)
=========
*/
 
void VM_etos(prvm_prog_t *prog)
{
    char s[128];
    size_t slen;
 
    VM_SAFEPARMCOUNT(1, VM_etos);
 
    slen = dpsnprintf(s, sizeof(s), "entity %i", PRVM_G_EDICTNUM(OFS_PARM0));
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, s, slen);
}
 
/*
=========
VM_stof
 
float stof(...[string])
=========
*/
void VM_stof(prvm_prog_t *prog)
{
    char string[VM_TEMPSTRING_MAXSIZE];
    VM_SAFEPARMCOUNTRANGE(1, 8, VM_stof);
    VM_VarString(prog, 0, string, sizeof(string));
    PRVM_G_FLOAT(OFS_RETURN) = atof(string);
}
 
/*
========================
VM_itof
 
float itof(int ent)
========================
*/
void VM_itof(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1, VM_itof);
    PRVM_G_FLOAT(OFS_RETURN) = PRVM_G_INT(OFS_PARM0);
}
 
/*
========================
VM_ftoe
 
entity ftoe(float num)
========================
*/
void VM_ftoe(prvm_prog_t *prog)
{
    prvm_int_t ent;
    VM_SAFEPARMCOUNT(1, VM_ftoe);
 
    ent = (prvm_int_t)PRVM_G_FLOAT(OFS_PARM0);
    if (ent < 0 || ent >= prog->max_edicts || PRVM_PROG_TO_EDICT(ent)->free)
        ent = 0; // return world instead of a free or invalid entity
 
    PRVM_G_INT(OFS_RETURN) = ent;
}
 
/*
========================
VM_etof
 
float etof(entity ent)
========================
*/
void VM_etof(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1, VM_etof);
    PRVM_G_FLOAT(OFS_RETURN) = PRVM_G_EDICTNUM(OFS_PARM0);
}
 
/*
=========
VM_strftime
 
string strftime(float uselocaltime, string[, string ...])
=========
*/
void VM_strftime(prvm_prog_t *prog)
{
    time_t t;
#if _MSC_VER >= 1400
    struct tm tm;
    int tmresult;
#else
    struct tm *tm;
#endif
    char fmt[VM_TEMPSTRING_MAXSIZE];
    char result[VM_TEMPSTRING_MAXSIZE];
    size_t result_len;
 
    VM_SAFEPARMCOUNTRANGE(2, 8, VM_strftime);
    VM_VarString(prog, 1, fmt, sizeof(fmt));
    t = time(NULL);
#if _MSC_VER >= 1400
    if (PRVM_G_FLOAT(OFS_PARM0))
        tmresult = localtime_s(&tm, &t);
    else
        tmresult = gmtime_s(&tm, &t);
    if (!tmresult)
#else
    if (PRVM_G_FLOAT(OFS_PARM0))
        tm = localtime(&t);
    else
        tm = gmtime(&t);
    if (!tm)
#endif
    {
        PRVM_G_INT(OFS_RETURN) = 0;
        return;
    }
#if _MSC_VER >= 1400
    result_len = strftime(result, sizeof(result), fmt, &tm);
#else
    result_len = strftime(result, sizeof(result), fmt, tm);
#endif
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, result, result_len);
}
 
/*
=========
VM_spawn
 
entity spawn()
=========
*/
 
void VM_spawn(prvm_prog_t *prog)
{
    prvm_edict_t    *ed;
    VM_SAFEPARMCOUNT(0, VM_spawn);
    prog->xfunction->builtinsprofile += 20;
    ed = PRVM_ED_Alloc(prog);
    VM_RETURN_EDICT(ed);
}
 
/*
=========
VM_remove
 
remove(entity e)
=========
*/
 
void VM_remove(prvm_prog_t *prog)
{
    prvm_edict_t    *ed;
    prog->xfunction->builtinsprofile += 20;
 
    VM_SAFEPARMCOUNT(1, VM_remove);
 
    ed = PRVM_G_EDICT(OFS_PARM0);
    if( PRVM_NUM_FOR_EDICT(ed) <= prog->reserved_edicts )
    {
        if (developer.integer > 0)
            VM_Warning(prog, "VM_remove: tried to remove the null entity or a reserved entity!\n" );
    }
    else if( ed->free )
    {
        if (developer.integer > 0)
            VM_Warning(prog, "VM_remove: tried to remove an already freed entity!\n" );
    }
    else
        PRVM_ED_Free (prog, ed);
}
 
/*
=========
VM_find
 
entity  find(entity start, .string field, string match)
=========
*/
 
void VM_find(prvm_prog_t *prog)
{
    int     e;
    int     f;
    const char  *s, *t;
    prvm_edict_t    *ed;
 
    VM_SAFEPARMCOUNT(3,VM_find);
 
    e = PRVM_G_EDICTNUM(OFS_PARM0);
    f = PRVM_G_INT(OFS_PARM1);
    s = PRVM_G_STRING(OFS_PARM2);
 
    // LadyHavoc: apparently BloodMage does a find(world, weaponmodel, "") and
    // expects it to find all the monsters, so we must be careful to support
    // searching for ""
 
    for (e++ ; e < prog->num_edicts ; e++)
    {
        prog->xfunction->builtinsprofile++;
        ed = PRVM_EDICT_NUM(e);
        if (ed->free)
            continue;
        t = PRVM_E_STRING(ed,f);
        if (!t)
            t = "";
        if (!strcmp(t,s))
        {
            VM_RETURN_EDICT(ed);
            return;
        }
    }
 
    VM_RETURN_EDICT(prog->edicts);
}
 
/*
=========
VM_findfloat
 
  entity    findfloat(entity start, .float field, float match)
  entity    findentity(entity start, .entity field, entity match)
=========
*/
// LadyHavoc: added this for searching float, int, and entity reference fields
void VM_findfloat(prvm_prog_t *prog)
{
    int     e;
    int     f;
    prvm_vec_t  s;
    prvm_edict_t    *ed;
 
    VM_SAFEPARMCOUNT(3,VM_findfloat);
 
    e = PRVM_G_EDICTNUM(OFS_PARM0);
    f = PRVM_G_INT(OFS_PARM1);
    s = PRVM_G_FLOAT(OFS_PARM2);
 
    for (e++ ; e < prog->num_edicts ; e++)
    {
        prog->xfunction->builtinsprofile++;
        ed = PRVM_EDICT_NUM(e);
        if (ed->free)
            continue;
        if (PRVM_E_FLOAT(ed,f) == s)
        {
            VM_RETURN_EDICT(ed);
            return;
        }
    }
 
    VM_RETURN_EDICT(prog->edicts);
}
 
/*
=========
VM_findchain
 
entity  findchain(.string field, string match)
=========
*/
// chained search for strings in entity fields
// entity(.string field, string match) findchain = #402;
void VM_findchain(prvm_prog_t *prog)
{
    int     i;
    int     f;
    const char  *s, *t;
    prvm_edict_t    *ent, *chain;
    int chainfield;
 
    VM_SAFEPARMCOUNTRANGE(2,3,VM_findchain);
 
    if(prog->argc == 3)
        chainfield = PRVM_G_INT(OFS_PARM2);
    else
        chainfield = prog->fieldoffsets.chain;
    if (chainfield < 0)
        prog->error_cmd("VM_findchain: %s doesnt have the specified chain field !", prog->name);
 
    chain = prog->edicts;
 
    f = PRVM_G_INT(OFS_PARM0);
    s = PRVM_G_STRING(OFS_PARM1);
 
    // LadyHavoc: apparently BloodMage does a find(world, weaponmodel, "") and
    // expects it to find all the monsters, so we must be careful to support
    // searching for ""
 
    ent = PRVM_NEXT_EDICT(prog->edicts);
    for (i = 1;i < prog->num_edicts;i++, ent = PRVM_NEXT_EDICT(ent))
    {
        prog->xfunction->builtinsprofile++;
        if (ent->free)
            continue;
        t = PRVM_E_STRING(ent,f);
        if (!t)
            t = "";
        if (strcmp(t,s))
            continue;
 
        PRVM_EDICTFIELDEDICT(ent,chainfield) = PRVM_NUM_FOR_EDICT(chain);
        chain = ent;
    }
 
    VM_RETURN_EDICT(chain);
}
 
/*
=========
VM_findchainfloat
 
entity  findchainfloat(.string field, float match)
entity  findchainentity(.string field, entity match)
=========
*/
// LadyHavoc: chained search for float, int, and entity reference fields
// entity(.string field, float match) findchainfloat = #403;
void VM_findchainfloat(prvm_prog_t *prog)
{
    int     i;
    int     f;
    prvm_vec_t  s;
    prvm_edict_t    *ent, *chain;
    int chainfield;
 
    VM_SAFEPARMCOUNTRANGE(2, 3, VM_findchainfloat);
 
    if(prog->argc == 3)
        chainfield = PRVM_G_INT(OFS_PARM2);
    else
        chainfield = prog->fieldoffsets.chain;
    if (chainfield < 0)
        prog->error_cmd("VM_findchainfloat: %s doesnt have the specified chain field !", prog->name);
 
    chain = (prvm_edict_t *)prog->edicts;
 
    f = PRVM_G_INT(OFS_PARM0);
    s = PRVM_G_FLOAT(OFS_PARM1);
 
    ent = PRVM_NEXT_EDICT(prog->edicts);
    for (i = 1;i < prog->num_edicts;i++, ent = PRVM_NEXT_EDICT(ent))
    {
        prog->xfunction->builtinsprofile++;
        if (ent->free)
            continue;
        if (PRVM_E_FLOAT(ent,f) != s)
            continue;
 
        PRVM_EDICTFIELDEDICT(ent,chainfield) = PRVM_EDICT_TO_PROG(chain);
        chain = ent;
    }
 
    VM_RETURN_EDICT(chain);
}
 
/*
========================
VM_findflags
 
entity  findflags(entity start, .float field, float match)
========================
*/
// LadyHavoc: search for flags in float fields
void VM_findflags(prvm_prog_t *prog)
{
    prvm_int_t  e;
    prvm_int_t  f;
    prvm_int_t  s;
    prvm_edict_t    *ed;
 
    VM_SAFEPARMCOUNT(3, VM_findflags);
 
 
    e = PRVM_G_EDICTNUM(OFS_PARM0);
    f = PRVM_G_INT(OFS_PARM1);
    s = (prvm_int_t)PRVM_G_FLOAT(OFS_PARM2);
 
    for (e++ ; e < prog->num_edicts ; e++)
    {
        prog->xfunction->builtinsprofile++;
        ed = PRVM_EDICT_NUM(e);
        if (ed->free)
            continue;
        if (!PRVM_E_FLOAT(ed,f))
            continue;
        if ((prvm_int_t)PRVM_E_FLOAT(ed,f) & s)
        {
            VM_RETURN_EDICT(ed);
            return;
        }
    }
 
    VM_RETURN_EDICT(prog->edicts);
}
 
/*
========================
VM_findchainflags
 
entity  findchainflags(.float field, float match)
========================
*/
// LadyHavoc: chained search for flags in float fields
void VM_findchainflags(prvm_prog_t *prog)
{
    prvm_int_t      i;
    prvm_int_t      f;
    prvm_int_t      s;
    prvm_edict_t    *ent, *chain;
    int chainfield;
 
    VM_SAFEPARMCOUNTRANGE(2, 3, VM_findchainflags);
 
    if(prog->argc == 3)
        chainfield = PRVM_G_INT(OFS_PARM2);
    else
        chainfield = prog->fieldoffsets.chain;
    if (chainfield < 0)
        prog->error_cmd("VM_findchainflags: %s doesnt have the specified chain field !", prog->name);
 
    chain = (prvm_edict_t *)prog->edicts;
 
    f = PRVM_G_INT(OFS_PARM0);
    s = (prvm_int_t)PRVM_G_FLOAT(OFS_PARM1);
 
    ent = PRVM_NEXT_EDICT(prog->edicts);
    for (i = 1;i < prog->num_edicts;i++, ent = PRVM_NEXT_EDICT(ent))
    {
        prog->xfunction->builtinsprofile++;
        if (ent->free)
            continue;
        if (!PRVM_E_FLOAT(ent,f))
            continue;
        if (!((prvm_int_t)PRVM_E_FLOAT(ent,f) & s))
            continue;
 
        PRVM_EDICTFIELDEDICT(ent,chainfield) = PRVM_EDICT_TO_PROG(chain);
        chain = ent;
    }
 
    VM_RETURN_EDICT(chain);
}
 
/*
=========
VM_precache_sound
 
string  precache_sound (string sample)
=========
*/
void VM_precache_sound(prvm_prog_t *prog)
{
    const char *s;
 
    VM_SAFEPARMCOUNT(1, VM_precache_sound);
 
    s = PRVM_G_STRING(OFS_PARM0);
    PRVM_G_INT(OFS_RETURN) = PRVM_G_INT(OFS_PARM0);
    //VM_CheckEmptyString(prog, s);
 
    if(snd_initialized.integer && !S_PrecacheSound(s, true, true))
    {
        VM_Warning(prog, "VM_precache_sound: Failed to load %s !\n", s);
        return;
    }
}
 
/*
=================
VM_precache_file
 
returns the same string as output
 
does nothing, only used by qcc to build .pak archives
=================
*/
void VM_precache_file(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_precache_file);
    // precache_file is only used to copy files with qcc, it does nothing
    PRVM_G_INT(OFS_RETURN) = PRVM_G_INT(OFS_PARM0);
}
 
/*
=========
VM_coredump
 
coredump()
=========
*/
void VM_coredump(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0,VM_coredump);
 
    Cbuf_AddText(cmd_local, "prvm_edicts ");
    Cbuf_AddText(cmd_local, prog->name);
    Cbuf_AddText(cmd_local, "\n");
}
 
/*
=========
VM_stackdump
 
stackdump()
=========
*/
void VM_stackdump(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0, VM_stackdump);
 
    PRVM_StackTrace(prog);
}
 
/*
=========
VM_crash
 
crash()
=========
*/
 
void VM_crash(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0, VM_crash);
 
    prog->error_cmd("Crash called by %s",prog->name);
}
 
/*
=========
VM_traceon
 
traceon()
=========
*/
void VM_traceon(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0,VM_traceon);
 
    prog->trace = true;
}
 
/*
=========
VM_traceoff
 
traceoff()
=========
*/
void VM_traceoff(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0,VM_traceoff);
 
    prog->trace = false;
}
 
/*
=========
VM_eprint
 
eprint(entity e)
=========
*/
void VM_eprint(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_eprint);
 
    PRVM_ED_PrintNum (prog, PRVM_G_EDICTNUM(OFS_PARM0), NULL);
}
 
/*
=========
VM_rint
 
float   rint(float)
=========
*/
void VM_rint(prvm_prog_t *prog)
{
    prvm_vec_t f;
    VM_SAFEPARMCOUNT(1,VM_rint);
 
    f = PRVM_G_FLOAT(OFS_PARM0);
    if (f > 0)
        PRVM_G_FLOAT(OFS_RETURN) = floor(f + 0.5);
    else
        PRVM_G_FLOAT(OFS_RETURN) = ceil(f - 0.5);
}
 
/*
=========
VM_floor
 
float   floor(float)
=========
*/
void VM_floor(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_floor);
 
    PRVM_G_FLOAT(OFS_RETURN) = floor(PRVM_G_FLOAT(OFS_PARM0));
}
 
/*
=========
VM_ceil
 
float   ceil(float)
=========
*/
void VM_ceil(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_ceil);
 
    PRVM_G_FLOAT(OFS_RETURN) = ceil(PRVM_G_FLOAT(OFS_PARM0));
}
 
 
/*
=============
VM_nextent
 
entity  nextent(entity)
=============
*/
void VM_nextent(prvm_prog_t *prog)
{
    int     i;
    prvm_edict_t    *ent;
 
    VM_SAFEPARMCOUNT(1, VM_nextent);
 
    i = PRVM_G_EDICTNUM(OFS_PARM0);
    while (1)
    {
        prog->xfunction->builtinsprofile++;
        i++;
        if (i == prog->num_edicts)
        {
            VM_RETURN_EDICT(prog->edicts);
            return;
        }
        ent = PRVM_EDICT_NUM(i);
        if (!ent->free)
        {
            VM_RETURN_EDICT(ent);
            return;
        }
    }
}
 
//=============================================================================
 
/*
==============
VM_changelevel
server and menu
 
changelevel(string map)
==============
*/
void VM_changelevel(prvm_prog_t *prog)
{
    char vabuf[1024];
    VM_SAFEPARMCOUNT(1, VM_changelevel);
 
    if(!sv.active)
    {
        VM_Warning(prog, "VM_changelevel: server is not active!\n");
        return;
    }
 
// make sure we don't issue two changelevels
    if (svs.changelevel_issued)
        return;
    svs.changelevel_issued = true;
 
    Cbuf_AddText(cmd_local, va(vabuf, sizeof(vabuf), "changelevel %s\n", PRVM_G_STRING(OFS_PARM0)));
}
 
/*
=========
VM_sin
 
float   sin(float)
=========
*/
void VM_sin(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_sin);
    PRVM_G_FLOAT(OFS_RETURN) = sin(PRVM_G_FLOAT(OFS_PARM0));
}
 
/*
=========
VM_cos
float   cos(float)
=========
*/
void VM_cos(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_cos);
    PRVM_G_FLOAT(OFS_RETURN) = cos(PRVM_G_FLOAT(OFS_PARM0));
}
 
/*
=========
VM_sqrt
 
float   sqrt(float)
=========
*/
void VM_sqrt(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_sqrt);
    PRVM_G_FLOAT(OFS_RETURN) = sqrt(PRVM_G_FLOAT(OFS_PARM0));
}
 
/*
=========
VM_asin
 
float   asin(float)
=========
*/
void VM_asin(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_asin);
    PRVM_G_FLOAT(OFS_RETURN) = asin(PRVM_G_FLOAT(OFS_PARM0));
}
 
/*
=========
VM_acos
float   acos(float)
=========
*/
void VM_acos(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_acos);
    PRVM_G_FLOAT(OFS_RETURN) = acos(PRVM_G_FLOAT(OFS_PARM0));
}
 
/*
=========
VM_atan
float   atan(float)
=========
*/
void VM_atan(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_atan);
    PRVM_G_FLOAT(OFS_RETURN) = atan(PRVM_G_FLOAT(OFS_PARM0));
}
 
/*
=========
VM_atan2
float   atan2(float,float)
=========
*/
void VM_atan2(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(2,VM_atan2);
    PRVM_G_FLOAT(OFS_RETURN) = atan2(PRVM_G_FLOAT(OFS_PARM0), PRVM_G_FLOAT(OFS_PARM1));
}
 
/*
=========
VM_tan
float   tan(float)
=========
*/
void VM_tan(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_tan);
    PRVM_G_FLOAT(OFS_RETURN) = tan(PRVM_G_FLOAT(OFS_PARM0));
}
 
/*
=================
VM_randomvec
 
Returns a vector of length < 1 and > 0
 
vector randomvec()
=================
*/
void VM_randomvec(prvm_prog_t *prog)
{
    vec3_t temp;
    VM_SAFEPARMCOUNT(0, VM_randomvec);
    VectorRandom(temp);
    VectorCopy(temp, PRVM_G_VECTOR(OFS_RETURN));
}
 
//=============================================================================
 
/*
=========
VM_registercvar
 
float   registercvar (string name, string value[, float flags])
=========
*/
void VM_registercvar(prvm_prog_t *prog)
{
    const char *name, *value;
    unsigned flags;
 
    VM_SAFEPARMCOUNTRANGE(2, 3, VM_registercvar);
 
    name = PRVM_G_STRING(OFS_PARM0);
    value = PRVM_G_STRING(OFS_PARM1);
    flags = prog->argc >= 3 ? (int)PRVM_G_FLOAT(OFS_PARM2) : 0;
    PRVM_G_FLOAT(OFS_RETURN) = 0;
 
    if(flags > CF_MAXFLAGSVAL)
        return;
 
// first check to see if it has already been defined
    if (Cvar_FindVar (prog->console_cmd->cvars, name, prog->console_cmd->cvars_flagsmask))
        return;
 
// check for overlap with a command
    if (Cmd_Exists(cmd_local, name))
    {
        VM_Warning(prog, "VM_registercvar: %s is a command\n", name);
        return;
    }
 
    Cvar_Get(prog->console_cmd->cvars, name, value, prog->console_cmd->cvars_flagsmask | flags, NULL);
 
    PRVM_G_FLOAT(OFS_RETURN) = 1; // success
}
 
 
/*
=================
VM_min
 
returns the minimum of two supplied floats
 
float min(float a, float b, ...[float])
=================
*/
void VM_min(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNTRANGE(2, 8, VM_min);
    // LadyHavoc: 3+ argument enhancement suggested by FrikaC
    if (prog->argc >= 3)
    {
        int i;
        float f = PRVM_G_FLOAT(OFS_PARM0);
        for (i = 1;i < prog->argc;i++)
            if (f > PRVM_G_FLOAT((OFS_PARM0+i*3)))
                f = PRVM_G_FLOAT((OFS_PARM0+i*3));
        PRVM_G_FLOAT(OFS_RETURN) = f;
    }
    else
        PRVM_G_FLOAT(OFS_RETURN) = min(PRVM_G_FLOAT(OFS_PARM0), PRVM_G_FLOAT(OFS_PARM1));
}
 
/*
=================
VM_max
 
returns the maximum of two supplied floats
 
float   max(float a, float b, ...[float])
=================
*/
void VM_max(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNTRANGE(2, 8, VM_max);
    // LadyHavoc: 3+ argument enhancement suggested by FrikaC
    if (prog->argc >= 3)
    {
        int i;
        float f = PRVM_G_FLOAT(OFS_PARM0);
        for (i = 1;i < prog->argc;i++)
            if (f < PRVM_G_FLOAT((OFS_PARM0+i*3)))
                f = PRVM_G_FLOAT((OFS_PARM0+i*3));
        PRVM_G_FLOAT(OFS_RETURN) = f;
    }
    else
        PRVM_G_FLOAT(OFS_RETURN) = max(PRVM_G_FLOAT(OFS_PARM0), PRVM_G_FLOAT(OFS_PARM1));
}
 
/*
=================
VM_bound
 
returns number bounded by supplied range
 
float   bound(float min, float value, float max)
=================
*/
void VM_bound(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(3,VM_bound);
    PRVM_G_FLOAT(OFS_RETURN) = bound(PRVM_G_FLOAT(OFS_PARM0), PRVM_G_FLOAT(OFS_PARM1), PRVM_G_FLOAT(OFS_PARM2));
}
 
/*
=================
VM_pow
 
returns a raised to power b
 
float   pow(float a, float b)
=================
*/
void VM_pow(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(2,VM_pow);
    PRVM_G_FLOAT(OFS_RETURN) = pow(PRVM_G_FLOAT(OFS_PARM0), PRVM_G_FLOAT(OFS_PARM1));
}
 
void VM_log(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_log);
    PRVM_G_FLOAT(OFS_RETURN) = log(PRVM_G_FLOAT(OFS_PARM0));
}
 
void VM_Files_Init(prvm_prog_t *prog)
{
    int i;
    for (i = 0;i < PRVM_MAX_OPENFILES;i++)
        prog->openfiles[i] = NULL;
}
 
void VM_Files_CloseAll(prvm_prog_t *prog)
{
    int i;
    for (i = 0;i < PRVM_MAX_OPENFILES;i++)
    {
        if (prog->openfiles[i])
            FS_Close(prog->openfiles[i]);
        prog->openfiles[i] = NULL;
    }
}
 
static qfile_t *VM_GetFileHandle(prvm_prog_t *prog, int index)
{
    if (index < 0 || index >= PRVM_MAX_OPENFILES)
    {
        Con_Printf("VM_GetFileHandle: invalid file handle %i used in %s\n", index, prog->name);
        return NULL;
    }
    if (prog->openfiles[index] == NULL)
    {
        Con_Printf("VM_GetFileHandle: no such file handle %i (or file has been closed) in %s\n", index, prog->name);
        return NULL;
    }
    return prog->openfiles[index];
}
 
/*
=========
VM_fopen
 
float   fopen(string filename, float mode)
=========
*/
// float(string filename, float mode) fopen = #110;
// opens a file inside quake/gamedir/data/ (mode is FILE_READ, FILE_APPEND, or FILE_WRITE),
// returns fhandle >= 0 if successful, or fhandle < 0 if unable to open file for any reason
void VM_fopen(prvm_prog_t *prog)
{
    int filenum, mode;
    const char *modestring, *filename;
    char vabuf[1024];
 
    VM_SAFEPARMCOUNT(2,VM_fopen);
 
    for (filenum = 0;filenum < PRVM_MAX_OPENFILES;filenum++)
        if (prog->openfiles[filenum] == NULL)
            break;
    if (filenum >= PRVM_MAX_OPENFILES)
    {
        PRVM_G_FLOAT(OFS_RETURN) = -2;
        VM_Warning(prog, "VM_fopen: ran out of file handles (max %i)\n", PRVM_MAX_OPENFILES);
        return;
    }
    filename = PRVM_G_STRING(OFS_PARM0);
    mode = (int)PRVM_G_FLOAT(OFS_PARM1);
    switch(mode)
    {
    case 0: // FILE_READ
        modestring = "rb";
        prog->openfiles[filenum] = FS_OpenVirtualFile(va(vabuf, sizeof(vabuf), "data/%s", filename), false);
        if (prog->openfiles[filenum] == NULL)
            prog->openfiles[filenum] = FS_OpenVirtualFile(va(vabuf, sizeof(vabuf), "%s", filename), false);
        break;
    case 1: // FILE_APPEND
        modestring = "a";
        prog->openfiles[filenum] = FS_OpenRealFile(va(vabuf, sizeof(vabuf), "data/%s", filename), modestring, false);
        break;
    case 2: // FILE_WRITE
        modestring = "w";
        prog->openfiles[filenum] = FS_OpenRealFile(va(vabuf, sizeof(vabuf), "data/%s", filename), modestring, false);
        break;
    default:
        PRVM_G_FLOAT(OFS_RETURN) = -3;
        VM_Warning(prog, "VM_fopen: no such mode %i (valid: 0 = read, 1 = append, 2 = write)\n", mode);
        return;
    }
 
    if (prog->openfiles[filenum] == NULL)
    {
        PRVM_G_FLOAT(OFS_RETURN) = -1;
        if (developer_extra.integer)
            VM_Warning(prog, "VM_fopen: %s mode %s failed\n", filename, modestring);
    }
    else
    {
        PRVM_G_FLOAT(OFS_RETURN) = filenum;
        if (developer_extra.integer)
            Con_DPrintf("VM_fopen: %s: %s mode %s opened as #%i\n", prog->name, filename, modestring, filenum);
        prog->openfiles_origin[filenum] = PRVM_AllocationOrigin(prog);
    }
}
 
/*
=========
VM_fclose
 
fclose(float fhandle)
=========
*/
//void(float fhandle) fclose = #111; // closes a file
void VM_fclose(prvm_prog_t *prog)
{
    int filenum;
 
    VM_SAFEPARMCOUNT(1,VM_fclose);
 
    filenum = (int)PRVM_G_FLOAT(OFS_PARM0);
    if (filenum < 0 || filenum >= PRVM_MAX_OPENFILES)
    {
        VM_Warning(prog, "VM_fclose: invalid file handle %i\n", filenum);
        return;
    }
    if (prog->openfiles[filenum] == NULL)
    {
        VM_Warning(prog, "VM_fclose: no such file handle %i (or file has been closed)\n", filenum);
        return;
    }
    FS_Close(prog->openfiles[filenum]);
    prog->openfiles[filenum] = NULL;
    if(prog->openfiles_origin[filenum])
        PRVM_Free((char *)prog->openfiles_origin[filenum]);
    if (developer_extra.integer)
        Con_DPrintf("VM_fclose: %s: #%i closed\n", prog->name, filenum);
}
 
/*
=========
VM_fgets
 
string  fgets(float fhandle)
=========
*/
//string(float fhandle) fgets = #112; // reads a line of text from the file and returns as a tempstring
void VM_fgets(prvm_prog_t *prog)
{
    int c, end;
    char string[VM_TEMPSTRING_MAXSIZE];
    int filenum;
 
    VM_SAFEPARMCOUNT(1,VM_fgets);
 
    // set the return value regardless of any possible errors
    PRVM_G_INT(OFS_RETURN) = OFS_NULL;
 
    filenum = (int)PRVM_G_FLOAT(OFS_PARM0);
    if (filenum < 0 || filenum >= PRVM_MAX_OPENFILES)
    {
        VM_Warning(prog, "VM_fgets: invalid file handle %i\n", filenum);
        return;
    }
    if (prog->openfiles[filenum] == NULL)
    {
        VM_Warning(prog, "VM_fgets: no such file handle %i (or file has been closed)\n", filenum);
        return;
    }
    end = 0;
    for (;;)
    {
        c = FS_Getc(prog->openfiles[filenum]);
        if (c == '\r' || c == '\n' || c < 0)
            break;
        if (end < VM_TEMPSTRING_MAXSIZE - 1)
            string[end++] = c;
    }
    string[end] = '\0';
    // remove \n following \r
    if (c == '\r')
    {
        c = FS_Getc(prog->openfiles[filenum]);
        if (c != '\n')
            FS_UnGetc(prog->openfiles[filenum], (unsigned char)c);
    }
    if (developer_extra.integer)
        Con_DPrintf("fgets: %s: %s\n", prog->name, string);
    if (c >= 0 || end)
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, string, end);
}
 
/*
=========
VM_fputs
 
fputs(float fhandle, string s)
=========
*/
//void(float fhandle, string s) fputs = #113; // writes a line of text to the end of the file
void VM_fputs(prvm_prog_t *prog)
{
    size_t stringlength;
    char string[VM_TEMPSTRING_MAXSIZE];
    int filenum;
 
    VM_SAFEPARMCOUNT(2,VM_fputs);
 
    filenum = (int)PRVM_G_FLOAT(OFS_PARM0);
    if (filenum < 0 || filenum >= PRVM_MAX_OPENFILES)
    {
        VM_Warning(prog, "VM_fputs: invalid file handle %i\n", filenum);
        return;
    }
    if (prog->openfiles[filenum] == NULL)
    {
        VM_Warning(prog, "VM_fputs: no such file handle %i (or file has been closed)\n", filenum);
        return;
    }
    stringlength = VM_VarString(prog, 1, string, sizeof(string));
    if (stringlength)
        FS_Write(prog->openfiles[filenum], string, stringlength);
    if (developer_extra.integer)
        Con_DPrintf("fputs: %s: %s\n", prog->name, string);
}
 
/*
=========
VM_writetofile
 
    writetofile(float fhandle, entity ent)
=========
*/
void VM_writetofile(prvm_prog_t *prog)
{
    prvm_edict_t * ent;
    qfile_t *file;
 
    VM_SAFEPARMCOUNT(2, VM_writetofile);
 
    file = VM_GetFileHandle(prog, (int)PRVM_G_FLOAT(OFS_PARM0));
    if( !file )
    {
        VM_Warning(prog, "VM_writetofile: invalid or closed file handle\n");
        return;
    }
 
    ent = PRVM_G_EDICT(OFS_PARM1);
    if(ent->free)
    {
        VM_Warning(prog, "VM_writetofile: entity %i is free!\n", PRVM_NUM_FOR_EDICT(ent));
        return;
    }
 
    PRVM_ED_Write (prog, file, ent);
}
 
// KrimZon - DP_QC_ENTITYDATA
/*
=========
VM_numentityfields
 
float() numentityfields
Return the number of entity fields - NOT offsets
=========
*/
void VM_numentityfields(prvm_prog_t *prog)
{
    PRVM_G_FLOAT(OFS_RETURN) = prog->numfielddefs;
}
 
// KrimZon - DP_QC_ENTITYDATA
/*
=========
VM_entityfieldname
 
string(float fieldnum) entityfieldname
Return name of the specified field as a string, or empty if the field is invalid (warning)
=========
*/
void VM_entityfieldname(prvm_prog_t *prog)
{
    mdef_t *d;
    int i = (int)PRVM_G_FLOAT(OFS_PARM0);
 
    if (i < 0 || i >= prog->numfielddefs)
    {
        VM_Warning(prog, "VM_entityfieldname: field index out of bounds!\n");
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, "", 0);
        return;
    }
 
    d = &prog->fielddefs[i];
    PRVM_G_INT(OFS_RETURN) = d->s_name; // presuming that s_name points to a string already
}
 
// KrimZon - DP_QC_ENTITYDATA
/*
=========
VM_entityfieldtype
 
float(float fieldnum) entityfieldtype
=========
*/
void VM_entityfieldtype(prvm_prog_t *prog)
{
    mdef_t *d;
    int i = (int)PRVM_G_FLOAT(OFS_PARM0);
    
    if (i < 0 || i >= prog->numfielddefs)
    {
        VM_Warning(prog, "VM_entityfieldtype: field index out of bounds!\n");
        PRVM_G_FLOAT(OFS_RETURN) = -1.0;
        return;
    }
    
    d = &prog->fielddefs[i];
    PRVM_G_FLOAT(OFS_RETURN) = (prvm_vec_t)d->type;
}
 
// KrimZon - DP_QC_ENTITYDATA
/*
=========
VM_getentityfieldstring
 
string(float fieldnum, entity ent) getentityfieldstring
=========
*/
void VM_getentityfieldstring(prvm_prog_t *prog)
{
    // put the data into a string
    mdef_t *d;
    int type, j;
    prvm_eval_t *val;
    prvm_edict_t * ent;
    int i = (int)PRVM_G_FLOAT(OFS_PARM0);
    char valuebuf[MAX_INPUTLINE];
    
    if (i < 0 || i >= prog->numfielddefs)
    {
        VM_Warning(prog, "VM_entityfielddata: field index out of bounds!\n");
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, "", 0);
        return;
    }
    
    d = &prog->fielddefs[i];
    
    // get the entity
    ent = PRVM_G_EDICT(OFS_PARM1);
    if(ent->free)
    {
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, "", 0);
        VM_Warning(prog, "VM_entityfielddata: entity %i is free!\n", PRVM_NUM_FOR_EDICT(ent));
        return;
    }
    val = (prvm_eval_t *)(ent->fields.fp + d->ofs);
    
    // if it's 0 or blank, return an empty string
    type = d->type & ~DEF_SAVEGLOBAL;
    for (j=0 ; j<prvm_type_size[type] ; j++)
        if (val->ivector[j])
            break;
    if (j == prvm_type_size[type])
    {
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, "", 0);
        return;
    }
 
    PRVM_UglyValueString(prog, (etype_t)d->type, val, valuebuf, sizeof(valuebuf));
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, valuebuf, strlen(valuebuf));
}
 
// KrimZon - DP_QC_ENTITYDATA
/*
=========
VM_putentityfieldstring
 
float(float fieldnum, entity ent, string s) putentityfieldstring
=========
*/
void VM_putentityfieldstring(prvm_prog_t *prog)
{
    mdef_t *d;
    prvm_edict_t * ent;
    int i = (int)PRVM_G_FLOAT(OFS_PARM0);
 
    if (i < 0 || i >= prog->numfielddefs)
    {
        VM_Warning(prog, "VM_entityfielddata: field index out of bounds!\n");
        PRVM_G_FLOAT(OFS_RETURN) = 0.0f;
        return;
    }
 
    d = &prog->fielddefs[i];
 
    // get the entity
    ent = PRVM_G_EDICT(OFS_PARM1);
    if(ent->free)
    {
        VM_Warning(prog, "VM_entityfielddata: entity %i is free!\n", PRVM_NUM_FOR_EDICT(ent));
        PRVM_G_FLOAT(OFS_RETURN) = 0.0f;
        return;
    }
 
    // parse the string into the value
    PRVM_G_FLOAT(OFS_RETURN) = ( PRVM_ED_ParseEpair(prog, ent, d, PRVM_G_STRING(OFS_PARM2), false) ) ? 1.0f : 0.0f;
}
 
/*
=========
VM_strlen
 
float   strlen(string s)
=========
*/
//float(string s) strlen = #114; // returns how many characters are in a string
void VM_strlen(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_strlen);
 
    //PRVM_G_FLOAT(OFS_RETURN) = strlen(PRVM_G_STRING(OFS_PARM0));
    PRVM_G_FLOAT(OFS_RETURN) = u8_strlen(PRVM_G_STRING(OFS_PARM0));
}
 
// DRESK - Decolorized String
/*
=========
VM_strdecolorize
 
string  strdecolorize(string s)
=========
*/
// string (string s) strdecolorize = #472; // returns the passed in string with color codes stripped
void VM_strdecolorize(prvm_prog_t *prog)
{
    char szNewString[VM_TEMPSTRING_MAXSIZE];
    size_t szNewString_len;
    const char *szString;
 
    // Prepare Strings
    VM_SAFEPARMCOUNT(1,VM_strdecolorize);
    szString = PRVM_G_STRING(OFS_PARM0);
    szNewString_len = COM_StringDecolorize(szString, 0, szNewString, sizeof(szNewString), true);
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, szNewString, szNewString_len);
}
 
// DRESK - String Length (not counting color codes)
/*
=========
VM_strlennocol
 
float   strlennocol(string s)
=========
*/
// float(string s) strlennocol = #471; // returns how many characters are in a string not including color codes
// For example, ^2Dresk returns a length of 5
void VM_strlennocol(prvm_prog_t *prog)
{
    const char *szString;
    int nCnt;
 
    VM_SAFEPARMCOUNT(1,VM_strlennocol);
 
    szString = PRVM_G_STRING(OFS_PARM0);
 
    //nCnt = (int)COM_StringLengthNoColors(szString, 0, NULL);
    nCnt = (int)u8_COM_StringLengthNoColors(szString, 0, NULL);
 
    PRVM_G_FLOAT(OFS_RETURN) = nCnt;
}
 
// DRESK - String to Uppercase and Lowercase
/*
=========
VM_strtolower
 
string  strtolower(string s)
=========
*/
// string (string s) strtolower = #480; // returns passed in string in lowercase form
void VM_strtolower(prvm_prog_t *prog)
{
    char szNewString[VM_TEMPSTRING_MAXSIZE];
    size_t szNewString_len;
    const char *szString;
 
    // Prepare Strings
    VM_SAFEPARMCOUNT(1,VM_strtolower);
    szString = PRVM_G_STRING(OFS_PARM0);
 
    szNewString_len = COM_ToLowerString(szString, szNewString, sizeof(szNewString) );
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, szNewString, szNewString_len);
}
 
/*
=========
VM_strtoupper
 
string  strtoupper(string s)
=========
*/
// string (string s) strtoupper = #481; // returns passed in string in uppercase form
void VM_strtoupper(prvm_prog_t *prog)
{
    char szNewString[VM_TEMPSTRING_MAXSIZE];
    size_t szNewString_len;
    const char *szString;
 
    // Prepare Strings
    VM_SAFEPARMCOUNT(1,VM_strtoupper);
    szString = PRVM_G_STRING(OFS_PARM0);
 
    szNewString_len = COM_ToUpperString(szString, szNewString, sizeof(szNewString) );
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, szNewString, szNewString_len);
}
 
/*
=========
VM_strcat
 
string strcat(string s, string...)
=========
*/
//string(string s, string...) strcat = #115;
// concatenates strings (for example "abc", "def" would return "abcdef")
// and returns as a tempstring
void VM_strcat(prvm_prog_t *prog)
{
    char s[VM_TEMPSTRING_MAXSIZE];
    size_t slen;
 
    VM_SAFEPARMCOUNTRANGE(1, 8, VM_strcat);
 
    slen = VM_VarString(prog, 0, s, sizeof(s));
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, s, slen);
}
 
/*
=========
VM_substring
 
string  substring(string s, float start, float length)
=========
*/
// string(string s, float start, float length) substring = #116;
// returns a section of a string as a tempstring
void VM_substring(prvm_prog_t *prog)
{
    int start, length;
    int u_slength = 0, u_start;
    size_t u_length;
    const char *s;
    char string[VM_TEMPSTRING_MAXSIZE];
 
    VM_SAFEPARMCOUNT(3,VM_substring);
 
    /*
    s = PRVM_G_STRING(OFS_PARM0);
    start = (int)PRVM_G_FLOAT(OFS_PARM1);
    length = (int)PRVM_G_FLOAT(OFS_PARM2);
    slength = strlen(s);
 
    if (start < 0) // FTE_STRINGS feature
        start += slength;
    start = bound(0, start, slength);
 
    if (length < 0) // FTE_STRINGS feature
        length += slength - start + 1;
    maxlen = min((int)sizeof(string) - 1, slength - start);
    length = bound(0, length, maxlen);
 
    memcpy(string, s + start, length);
    string[length] = 0;
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, string);
    */
    
    s = PRVM_G_STRING(OFS_PARM0);
    start = (int)PRVM_G_FLOAT(OFS_PARM1);
    length = (int)PRVM_G_FLOAT(OFS_PARM2);
 
    if (start < 0) // FTE_STRINGS feature
    {
        u_slength = (int)u8_strlen(s);
        start += u_slength;
        start = bound(0, start, u_slength);
    }
 
    if (length < 0) // FTE_STRINGS feature
    {
        if (!u_slength) // it's not calculated when it's not needed above
            u_slength = (int)u8_strlen(s);
        length += u_slength - start + 1;
    }
        
    // positive start, positive length
    u_start = u8_byteofs(s, start, NULL);
    if (u_start < 0)
    {
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, "", 0);
        return;
    }
    u_length = u8_bytelen(s + u_start, length);
    if (u_length >= sizeof(string)-1)
        u_length = sizeof(string)-1;
    
    memcpy(string, s + u_start, u_length);
    string[u_length] = '\0';
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, string, u_length);
}
 
/*
=========
VM_strreplace
 
string(string search, string replace, string subject) strreplace = #484;
=========
*/
// replaces all occurrences of search with replace in the string subject, and returns the result
void VM_strreplace(prvm_prog_t *prog)
{
    int i, j, si;
    const char *search, *replace, *subject;
    char string[VM_TEMPSTRING_MAXSIZE];
    int search_len, replace_len, subject_len;
 
    VM_SAFEPARMCOUNT(3,VM_strreplace);
 
    search = PRVM_G_STRING(OFS_PARM0);
    replace = PRVM_G_STRING(OFS_PARM1);
    subject = PRVM_G_STRING(OFS_PARM2);
 
    search_len = (int)strlen(search);
    replace_len = (int)strlen(replace);
    subject_len = (int)strlen(subject);
 
    si = 0;
    for (i = 0; i <= subject_len - search_len; i++)
    {
        for (j = 0; j < search_len; j++) // thus, i+j < subject_len
            if (subject[i+j] != search[j])
                break;
        if (j == search_len)
        {
            // NOTE: if search_len == 0, we always hit THIS case, and never the other
            // found it at offset 'i'
            for (j = 0; j < replace_len && si < (int)sizeof(string) - 1; j++)
                string[si++] = replace[j];
            if(search_len > 0)
            {
                i += search_len - 1;
            }
            else
            {
                // the above would subtract 1 from i... so we
                // don't do that, but instead output the next
                // char
                if (si < (int)sizeof(string) - 1)
                    string[si++] = subject[i];
            }
        }
        else
        {
            // in THIS case, we know search_len > 0, thus i < subject_len
            // not found
            if (si < (int)sizeof(string) - 1)
                string[si++] = subject[i];
        }
    }
    // remaining chars (these cannot match)
    for (; i < subject_len; i++)
        if (si < (int)sizeof(string) - 1)
            string[si++] = subject[i];
    string[si] = '\0';
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, string, si);
}
 
/*
=========
VM_strireplace
 
string(string search, string replace, string subject) strireplace = #485;
=========
*/
// case-insensitive version of strreplace
void VM_strireplace(prvm_prog_t *prog)
{
    int i, j, si;
    const char *search, *replace, *subject;
    char string[VM_TEMPSTRING_MAXSIZE];
    int search_len, replace_len, subject_len;
 
    VM_SAFEPARMCOUNT(3, VM_strireplace);
 
    search = PRVM_G_STRING(OFS_PARM0);
    replace = PRVM_G_STRING(OFS_PARM1);
    subject = PRVM_G_STRING(OFS_PARM2);
 
    search_len = (int)strlen(search);
    replace_len = (int)strlen(replace);
    subject_len = (int)strlen(subject);
 
    si = 0;
    for (i = 0; i <= subject_len - search_len; i++)
    {
        for (j = 0; j < search_len; j++) // thus, i+j < subject_len
            if (tolower(subject[i+j]) != tolower(search[j]))
                break;
        if (j == search_len)
        {
            // NOTE: if search_len == 0, we always hit THIS case, and never the other
            // found it at offset 'i'
            for (j = 0; j < replace_len && si < (int)sizeof(string) - 1; j++)
                string[si++] = replace[j];
            if(search_len > 0)
            {
                i += search_len - 1;
            }
            else
            {
                // the above would subtract 1 from i... so we
                // don't do that, but instead output the next
                // char
                if (si < (int)sizeof(string) - 1)
                    string[si++] = subject[i];
            }
        }
        else
        {
            // in THIS case, we know search_len > 0, thus i < subject_len
            // not found
            if (si < (int)sizeof(string) - 1)
                string[si++] = subject[i];
        }
    }
    // remaining chars (these cannot match)
    for (; i < subject_len; i++)
        if (si < (int)sizeof(string) - 1)
            string[si++] = subject[i];
    string[si] = '\0';
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, string, si);
}
 
/*
=========
VM_stov
 
vector  stov(string s)
=========
*/
//vector(string s) stov = #117; // returns vector value from a string
void VM_stov(prvm_prog_t *prog)
{
    char string[VM_TEMPSTRING_MAXSIZE];
 
    VM_SAFEPARMCOUNT(1,VM_stov);
 
    VM_VarString(prog, 0, string, sizeof(string));
    Math_atov(string, PRVM_G_VECTOR(OFS_RETURN));
}
 
/*
=========
VM_strzone
 
string  strzone(string s)
=========
*/
//string(string s, ...) strzone = #118; // makes a copy of a string into the string zone and returns it, this is often used to keep around a tempstring for longer periods of time (tempstrings are replaced often)
void VM_strzone(prvm_prog_t *prog)
{
    char *out;
    char string[VM_TEMPSTRING_MAXSIZE];
    size_t alloclen;
 
    VM_SAFEPARMCOUNT(1,VM_strzone);
 
    alloclen = VM_VarString(prog, 0, string, sizeof(string)) + 1;
    PRVM_G_INT(OFS_RETURN) = PRVM_AllocString(prog, alloclen, &out);
    memcpy(out, string, alloclen);
}
 
/*
=========
VM_strunzone
 
strunzone(string s)
=========
*/
//void(string s) strunzone = #119; // removes a copy of a string from the string zone (you can not use that string again or it may crash!!!)
void VM_strunzone(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1,VM_strunzone);
    PRVM_FreeString(prog, PRVM_G_INT(OFS_PARM0));
}
 
/*
=========
VM_tokenize
 
float tokenize(string s)
=========
*/
//float(string s) tokenize = #441; // takes apart a string into individal words (access them with argv), returns how many
//this function originally written by KrimZon, made shorter by LadyHavoc
//20040203: rewritten by LadyHavoc (no longer uses allocations)
static int num_tokens = 0;
static int tokens[VM_TEMPSTRING_MAXSIZE / 2];
static int tokens_startpos[VM_TEMPSTRING_MAXSIZE / 2];
static int tokens_endpos[VM_TEMPSTRING_MAXSIZE / 2];
static char tokenize_string[VM_TEMPSTRING_MAXSIZE];
void VM_tokenize (prvm_prog_t *prog)
{
    const char *p;
 
    VM_SAFEPARMCOUNT(1,VM_tokenize);
 
    dp_strlcpy(tokenize_string, PRVM_G_STRING(OFS_PARM0), sizeof(tokenize_string));
    p = tokenize_string;
 
    num_tokens = 0;
    for(;;)
    {
        if (num_tokens >= (int)(sizeof(tokens)/sizeof(tokens[0])))
            break;
 
        // skip whitespace here to find token start pos
        while(*p && ISWHITESPACE(*p))
            ++p;
 
        tokens_startpos[num_tokens] = p - tokenize_string;
        if(!COM_ParseToken_VM_Tokenize(&p, false))
            break;
        tokens_endpos[num_tokens] = p - tokenize_string;
        tokens[num_tokens] = PRVM_SetTempString(prog, com_token, com_token_len);
        ++num_tokens;
    }
 
    PRVM_G_FLOAT(OFS_RETURN) = num_tokens;
}
 
//float(string s) tokenize = #514; // takes apart a string into individal words (access them with argv), returns how many
void VM_tokenize_console (prvm_prog_t *prog)
{
    const char *p;
 
    VM_SAFEPARMCOUNT(1, VM_tokenize_console);
 
    dp_strlcpy(tokenize_string, PRVM_G_STRING(OFS_PARM0), sizeof(tokenize_string));
    p = tokenize_string;
 
    num_tokens = 0;
    for(;;)
    {
        if (num_tokens >= (int)(sizeof(tokens)/sizeof(tokens[0])))
            break;
 
        // skip whitespace here to find token start pos
        while(*p && ISWHITESPACE(*p))
            ++p;
 
        tokens_startpos[num_tokens] = p - tokenize_string;
        if(!COM_ParseToken_Console(&p))
            break;
        tokens_endpos[num_tokens] = p - tokenize_string;
        tokens[num_tokens] = PRVM_SetTempString(prog, com_token, com_token_len);
        ++num_tokens;
    }
 
    PRVM_G_FLOAT(OFS_RETURN) = num_tokens;
}
 
/*
=========
VM_tokenizebyseparator
 
float tokenizebyseparator(string s, string separator1, ...)
=========
*/
//float(string s, string separator1, ...) tokenizebyseparator = #479; // takes apart a string into individal words (access them with argv), returns how many
//this function returns the token preceding each instance of a separator (of
//which there can be multiple), and the text following the last separator
//useful for parsing certain kinds of data like IP addresses
//example:
//numnumbers = tokenizebyseparator("10.1.2.3", ".");
//returns 4 and the tokens "10" "1" "2" "3".
void VM_tokenizebyseparator (prvm_prog_t *prog)
{
    int j, k;
    int numseparators;
    int separatorlen[7];
    const char *separators[7];
    const char *p, *p0;
    const char *token;
    char tokentext[MAX_INPUTLINE];
 
    VM_SAFEPARMCOUNTRANGE(2, 8,VM_tokenizebyseparator);
 
    dp_strlcpy(tokenize_string, PRVM_G_STRING(OFS_PARM0), sizeof(tokenize_string));
    p = tokenize_string;
 
    numseparators = 0;
    for (j = 1;j < prog->argc;j++)
    {
        // skip any blank separator strings
        const char *s = PRVM_G_STRING(OFS_PARM0+j*3);
        if (!s[0])
            continue;
        separators[numseparators] = s;
        separatorlen[numseparators] = (int)strlen(s);
        numseparators++;
    }
 
    num_tokens = 0;
    j = 0;
 
    while (num_tokens < (int)(sizeof(tokens)/sizeof(tokens[0])))
    {
        token = tokentext + j;
        tokens_startpos[num_tokens] = p - tokenize_string;
        p0 = p;
        while (*p)
        {
            for (k = 0;k < numseparators;k++)
            {
                if (!strncmp(p, separators[k], separatorlen[k]))
                {
                    p += separatorlen[k];
                    break;
                }
            }
            if (k < numseparators)
                break;
            if (j < (int)sizeof(tokentext)-1)
                tokentext[j++] = *p;
            p++;
            p0 = p;
        }
        tokens_endpos[num_tokens] = p0 - tokenize_string;
        if (j >= (int)sizeof(tokentext))
            break;
        tokentext[j] = '\0';
        tokens[num_tokens++] = PRVM_SetTempString(prog, token, j++ - (token - tokentext));
        if (!*p)
            break;
    }
 
    PRVM_G_FLOAT(OFS_RETURN) = num_tokens;
}
 
//string(float n) argv = #442; // returns a word from the tokenized string (returns nothing for an invalid index)
//this function originally written by KrimZon, made shorter by LadyHavoc
void VM_argv (prvm_prog_t *prog)
{
    int token_num;
 
    VM_SAFEPARMCOUNT(1,VM_argv);
 
    token_num = (int)PRVM_G_FLOAT(OFS_PARM0);
 
    if(token_num < 0)
        token_num += num_tokens;
 
    if (token_num >= 0 && token_num < num_tokens)
        PRVM_G_INT(OFS_RETURN) = tokens[token_num];
    else
        PRVM_G_INT(OFS_RETURN) = OFS_NULL;
}
 
//float(float n) argv_start_index = #515; // returns the start index of a token
void VM_argv_start_index (prvm_prog_t *prog)
{
    int token_num;
 
    VM_SAFEPARMCOUNT(1,VM_argv);
 
    token_num = (int)PRVM_G_FLOAT(OFS_PARM0);
 
    if(token_num < 0)
        token_num += num_tokens;
 
    if (token_num >= 0 && token_num < num_tokens)
        PRVM_G_FLOAT(OFS_RETURN) = tokens_startpos[token_num];
    else
        PRVM_G_FLOAT(OFS_RETURN) = -1;
}
 
//float(float n) argv_end_index = #516; // returns the end index of a token
void VM_argv_end_index (prvm_prog_t *prog)
{
    int token_num;
 
    VM_SAFEPARMCOUNT(1,VM_argv);
 
    token_num = (int)PRVM_G_FLOAT(OFS_PARM0);
 
    if(token_num < 0)
        token_num += num_tokens;
 
    if (token_num >= 0 && token_num < num_tokens)
        PRVM_G_FLOAT(OFS_RETURN) = tokens_endpos[token_num];
    else
        PRVM_G_FLOAT(OFS_RETURN) = -1;
}
 
/*
=========
VM_isserver
 
float   isserver()
=========
*/
void VM_isserver(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0, VM_isserver);
 
    PRVM_G_FLOAT(OFS_RETURN) = sv.active;
}
 
/*
=========
VM_clientcount
 
float   clientcount()
=========
*/
void VM_clientcount(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0,VM_clientcount);
 
    PRVM_G_FLOAT(OFS_RETURN) = svs.maxclients;
}
 
/*
=========
VM_clientstate
 
float   clientstate()
=========
*/
void VM_clientstate(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0,VM_clientstate);
 
 
    switch( cls.state ) {
        case ca_uninitialized:
        case ca_dedicated:
            PRVM_G_FLOAT(OFS_RETURN) = 0;
            break;
        case ca_disconnected:
            PRVM_G_FLOAT(OFS_RETURN) = 1;
            break;
        case ca_connected:
            PRVM_G_FLOAT(OFS_RETURN) = 2;
            break;
        default:
            // should never be reached!
            break;
    }
}
 
/*
=========
VM_getostype
 
float   getostype(prvm_prog_t *prog)
=========
*/ // not used at the moment -> not included in the common list
void VM_getostype(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0,VM_getostype);
 
    /*
    OS_WINDOWS
    OS_LINUX
    OS_MAC - not supported
    */
 
#ifdef WIN32
    PRVM_G_FLOAT(OFS_RETURN) = 0;
#elif defined(MACOSX)
    PRVM_G_FLOAT(OFS_RETURN) = 2;
#else
    PRVM_G_FLOAT(OFS_RETURN) = 1;
#endif
}
 
/*
=========
VM_gettime
 
float   gettime(prvm_prog_t *prog)
=========
*/
float CDAudio_GetPosition(void);
void VM_gettime(prvm_prog_t *prog)
{
    int timer_index;
 
    VM_SAFEPARMCOUNTRANGE(0,1,VM_gettime);
 
    if(prog->argc == 0)
    {
        PRVM_G_FLOAT(OFS_RETURN) = (prvm_vec_t) host.realtime;
    }
    else
    {
        timer_index = (int) PRVM_G_FLOAT(OFS_PARM0);
        switch(timer_index)
        {
            case 0: // GETTIME_FRAMESTART
                PRVM_G_FLOAT(OFS_RETURN) = host.realtime - prog->starttime;
                break;
            case 1: // GETTIME_REALTIME
                PRVM_G_FLOAT(OFS_RETURN) = Sys_DirtyTime();
                break;
            case 2: // GETTIME_HIRES
                PRVM_G_FLOAT(OFS_RETURN) = (Sys_DirtyTime() - host.dirtytime);
                break;
            case 3: // GETTIME_UPTIME
                PRVM_G_FLOAT(OFS_RETURN) = host.realtime;
                break;
            case 4: // GETTIME_CDTRACK
                PRVM_G_FLOAT(OFS_RETURN) = CDAudio_GetPosition();
                break;
            default:
                VM_Warning(prog, "VM_gettime: unsupported timer specified, returning realtime\n");
                PRVM_G_FLOAT(OFS_RETURN) = host.realtime;
                break;
        }
    }
}
 
/*
=========
VM_getsoundtime
 
float   getsoundtime(prvm_prog_t *prog)
=========
*/
 
void VM_getsoundtime (prvm_prog_t *prog)
{
    int entnum, entchannel;
    VM_SAFEPARMCOUNT(2,VM_getsoundtime);
 
    if (prog == SVVM_prog)
        entnum = PRVM_NUM_FOR_EDICT(PRVM_G_EDICT(OFS_PARM0));
    else if (prog == CLVM_prog)
        entnum = MAX_EDICTS + PRVM_NUM_FOR_EDICT(PRVM_G_EDICT(OFS_PARM0));
    else
    {
        VM_Warning(prog, "VM_getsoundtime: not supported on this progs\n");
        PRVM_G_FLOAT(OFS_RETURN) = -1;
        return;
    }
    entchannel = (int)PRVM_G_FLOAT(OFS_PARM1);
    entchannel = CHAN_USER2ENGINE(entchannel);
    if (!IS_CHAN(entchannel))
        VM_Warning(prog, "VM_getsoundtime: bad channel %i\n", entchannel);
    PRVM_G_FLOAT(OFS_RETURN) = (prvm_vec_t)S_GetEntChannelPosition(entnum, entchannel);
}
 
/*
=========
VM_GetSoundLen
 
string  soundlength (string sample)
=========
*/
void VM_soundlength (prvm_prog_t *prog)
{
    const char *s;
 
    VM_SAFEPARMCOUNT(1, VM_soundlength);
 
    s = PRVM_G_STRING(OFS_PARM0);
    PRVM_G_FLOAT(OFS_RETURN) = S_SoundLength(s);
}
 
/*
=========
VM_loadfromdata
 
loadfromdata(string data)
=========
*/
void VM_loadfromdata(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1, VM_loadfromdata);
 
    PRVM_ED_LoadFromFile(prog, PRVM_G_STRING(OFS_PARM0));
}
 
/*
========================
VM_parseentitydata
 
parseentitydata(entity ent, string data)
========================
*/
void VM_parseentitydata(prvm_prog_t *prog)
{
    prvm_edict_t *ent;
    const char *data;
 
    VM_SAFEPARMCOUNT(2, VM_parseentitydata);
 
    // get edict and test it
    ent = PRVM_G_EDICT(OFS_PARM0);
    if (ent->free)
        prog->error_cmd("VM_parseentitydata: %s: Can only set already spawned entities (entity %i is free)!", prog->name, PRVM_NUM_FOR_EDICT(ent));
 
    data = PRVM_G_STRING(OFS_PARM1);
 
    // parse the opening brace
    if (!COM_ParseToken_Simple(&data, false, false, true) || com_token[0] != '{' )
        prog->error_cmd("VM_parseentitydata: %s: Couldn't parse entity data:\n%s", prog->name, data );
 
    PRVM_ED_ParseEdict(prog, data, ent, true);
}
 
/*
=========
VM_loadfromfile
 
loadfromfile(string file)
=========
*/
void VM_loadfromfile(prvm_prog_t *prog)
{
    const char *filename;
    char *data;
 
    VM_SAFEPARMCOUNT(1,VM_loadfromfile);
 
    filename = PRVM_G_STRING(OFS_PARM0);
    if (FS_CheckNastyPath(filename, false))
    {
        PRVM_G_FLOAT(OFS_RETURN) = -4;
        VM_Warning(prog, "VM_loadfromfile: dangerous or non-portable filename \"%s\" not allowed. (contains : or \\ or begins with .. or /)\n", filename);
        return;
    }
 
    // not conform with VM_fopen
    data = (char *)FS_LoadFile(filename, tempmempool, false, NULL);
    if (data == NULL)
        PRVM_G_FLOAT(OFS_RETURN) = -1;
 
    PRVM_ED_LoadFromFile(prog, data);
 
    if(data)
        Mem_Free(data);
}
 
 
/*
=========
VM_modulo
 
float   mod(float val, float m)
=========
*/
void VM_modulo(prvm_prog_t *prog)
{
    vec_t val, m;
 
    VM_SAFEPARMCOUNT(2, VM_modulo);
 
    val = PRVM_G_FLOAT(OFS_PARM0);
    m   = PRVM_G_FLOAT(OFS_PARM1);
 
    // matches how gmqcc implements % when mod() builtin isn't defined, and FTEQW mod()
    if (m)
        PRVM_G_FLOAT(OFS_RETURN) = val - m * (prvm_int_t)(val / m);
    else
    {
        VM_Warning(prog, "Attempted modulo of %f by zero\n", val);
        PRVM_G_FLOAT(OFS_RETURN) = 0;
    }
}
 
static void VM_Search_Init(prvm_prog_t *prog)
{
    int i;
    for (i = 0;i < PRVM_MAX_OPENSEARCHES;i++)
        prog->opensearches[i] = NULL;
}
 
static void VM_Search_Reset(prvm_prog_t *prog)
{
    int i;
    // reset the fssearch list
    for(i = 0; i < PRVM_MAX_OPENSEARCHES; i++)
    {
        if(prog->opensearches[i])
            FS_FreeSearch(prog->opensearches[i]);
        prog->opensearches[i] = NULL;
    }
}
 
/*
=========
VM_search_begin
 
float search_begin(string pattern, float caseinsensitive, float quiet[, string packfile])
=========
*/
void VM_search_begin(prvm_prog_t *prog)
{
    int handle;
    const char *packfile = NULL, *pattern;
    int caseinsens, quiet;
 
    VM_SAFEPARMCOUNTRANGE(3, 4, VM_search_begin);
 
    pattern = PRVM_G_STRING(OFS_PARM0);
 
    VM_CheckEmptyString(prog, pattern);
 
    caseinsens = (int)PRVM_G_FLOAT(OFS_PARM1);
    quiet = (int)PRVM_G_FLOAT(OFS_PARM2);
 
    // optional packfile parameter (DP_QC_FS_SEARCH_PACKFILE)
    if(prog->argc >= 4)
        packfile = PRVM_G_STRING(OFS_PARM3);
 
    for(handle = 0; handle < PRVM_MAX_OPENSEARCHES; handle++)
        if(!prog->opensearches[handle])
            break;
 
    if(handle >= PRVM_MAX_OPENSEARCHES)
    {
        PRVM_G_FLOAT(OFS_RETURN) = -2;
        VM_Warning(prog, "VM_search_begin: ran out of search handles (max %i)\n", PRVM_MAX_OPENSEARCHES);
        return;
    }
 
    if(!(prog->opensearches[handle] = FS_Search(pattern,caseinsens, quiet, packfile)))
        PRVM_G_FLOAT(OFS_RETURN) = -1;
    else
    {
        prog->opensearches_origin[handle] = PRVM_AllocationOrigin(prog);
        PRVM_G_FLOAT(OFS_RETURN) = handle;
    }
}
 
/*
=========
VM_search_end
 
void    search_end(float handle)
=========
*/
void VM_search_end(prvm_prog_t *prog)
{
    int handle;
    VM_SAFEPARMCOUNT(1, VM_search_end);
 
    handle = (int)PRVM_G_FLOAT(OFS_PARM0);
 
    if(handle < 0 || handle >= PRVM_MAX_OPENSEARCHES)
    {
        VM_Warning(prog, "VM_search_end: invalid handle %i\n", handle);
        return;
    }
    if(prog->opensearches[handle] == NULL)
    {
        VM_Warning(prog, "VM_search_end: no such handle %i\n", handle);
        return;
    }
 
    FS_FreeSearch(prog->opensearches[handle]);
    prog->opensearches[handle] = NULL;
    if(prog->opensearches_origin[handle])
        PRVM_Free((char *)prog->opensearches_origin[handle]);
}
 
/*
=========
VM_search_getsize
 
float   search_getsize(float handle)
=========
*/
void VM_search_getsize(prvm_prog_t *prog)
{
    int handle;
    VM_SAFEPARMCOUNT(1, VM_search_getsize);
 
    handle = (int)PRVM_G_FLOAT(OFS_PARM0);
 
    if(handle < 0 || handle >= PRVM_MAX_OPENSEARCHES)
    {
        VM_Warning(prog, "VM_search_getsize: invalid handle %i\n", handle);
        return;
    }
    if(prog->opensearches[handle] == NULL)
    {
        VM_Warning(prog, "VM_search_getsize: no such handle %i\n", handle);
        return;
    }
 
    PRVM_G_FLOAT(OFS_RETURN) = prog->opensearches[handle]->numfilenames;
}
 
/*
=========
VM_search_getfilename
 
string  search_getfilename(float handle, float num)
=========
*/
void VM_search_getfilename(prvm_prog_t *prog)
{
    int handle, filenum;
 
    VM_SAFEPARMCOUNT(2, VM_search_getfilename);
 
    handle = (int)PRVM_G_FLOAT(OFS_PARM0);
    filenum = (int)PRVM_G_FLOAT(OFS_PARM1);
 
    if(handle < 0 || handle >= PRVM_MAX_OPENSEARCHES)
    {
        VM_Warning(prog, "VM_search_getfilename: invalid handle %i\n", handle);
        return;
    }
    if(prog->opensearches[handle] == NULL)
    {
        VM_Warning(prog, "VM_search_getfilename: no such handle %i\n", handle);
        return;
    }
    if(filenum < 0 || filenum >= prog->opensearches[handle]->numfilenames)
    {
        VM_Warning(prog, "VM_search_getfilename: invalid filenum %i\n", filenum);
        return;
    }
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog,
                                                prog->opensearches[handle]->filenames[filenum],
                                                strlen(prog->opensearches[handle]->filenames[filenum]));
}
 
/*
=========
VM_chr
 
string  chr(float ascii)
=========
*/
void VM_chr(prvm_prog_t *prog)
{
    /*
    char tmp[2];
    VM_SAFEPARMCOUNT(1, VM_chr);
 
    tmp[0] = (unsigned char) PRVM_G_FLOAT(OFS_PARM0);
    tmp[1] = 0;
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, tmp);
    */
    
    char tmp[8];
    int len;
 
    VM_SAFEPARMCOUNT(1, VM_chr);
    len = u8_fromchar((Uchar)PRVM_G_FLOAT(OFS_PARM0), tmp, sizeof(tmp));
    tmp[len] = '\0';
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, tmp, len);
}
 
/*
=========
VM_keynumtostring
 
string keynumtostring(float keynum)
=========
*/
void VM_keynumtostring (prvm_prog_t *prog)
{
    char tinystr[TINYSTR_LEN];
    const char *str; // Key_KeynumToString doesn't always return tinystr
 
    VM_SAFEPARMCOUNT(1, VM_keynumtostring);
    str = Key_KeynumToString((int)PRVM_G_FLOAT(OFS_PARM0), tinystr, sizeof(tinystr));
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, str, strlen(str));
}
 
/*
=========
VM_findkeysforcommand
 
string  findkeysforcommand(string command, float bindmap)
 
the returned string is an altstring
=========
*/
#define FKFC_NUMKEYS 5
void M_FindKeysForCommand(const char *command, int *keys);
void VM_findkeysforcommand(prvm_prog_t *prog)
{
    const char *cmd;
    char ret[VM_TEMPSTRING_MAXSIZE];
    size_t ret_len;
    int keys[FKFC_NUMKEYS];
    int i;
    int bindmap;
    char vabuf[1024];
 
    VM_SAFEPARMCOUNTRANGE(1, 2, VM_findkeysforcommand);
 
    cmd = PRVM_G_STRING(OFS_PARM0);
    if(prog->argc == 2)
        bindmap = bound(-1, PRVM_G_FLOAT(OFS_PARM1), MAX_BINDMAPS-1);
    else
        bindmap = 0; // consistent to "bind"
 
    VM_CheckEmptyString(prog, cmd);
 
    Key_FindKeysForCommand(cmd, keys, FKFC_NUMKEYS, bindmap);
 
    ret[0] = 0;
    for(i = 0; i < FKFC_NUMKEYS; i++)
        ret_len = dp_strlcat(ret, va(vabuf, sizeof(vabuf), " \'%i\'", keys[i]), sizeof(ret));
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, ret, ret_len);
}
 
/*
=========
VM_stringtokeynum
 
float stringtokeynum(string key)
=========
*/
void VM_stringtokeynum (prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT( 1, VM_stringtokeynum );
 
    PRVM_G_FLOAT(OFS_RETURN) = Key_StringToKeynum(PRVM_G_STRING(OFS_PARM0));
}
 
/*
=========
VM_getkeybind
 
string getkeybind(float key, float bindmap)
=========
*/
void VM_getkeybind (prvm_prog_t *prog)
{
    int bindmap;
    const char *bind;
 
    VM_SAFEPARMCOUNTRANGE(1, 2, VM_getkeybind);
    if(prog->argc == 2)
        bindmap = bound(-1, PRVM_G_FLOAT(OFS_PARM1), MAX_BINDMAPS-1);
    else
        bindmap = 0; // consistent to "bind"
    bind = Key_GetBind((int)PRVM_G_FLOAT(OFS_PARM0), bindmap);
    PRVM_G_INT(OFS_RETURN) = bind ? PRVM_SetTempString(prog, bind, strlen(bind)) : 0;
}
 
/*
=========
VM_setkeybind
 
float setkeybind(float key, string cmd, float bindmap)
=========
*/
void VM_setkeybind (prvm_prog_t *prog)
{
    int bindmap;
    VM_SAFEPARMCOUNTRANGE(2, 3, VM_setkeybind);
    if(prog->argc == 3)
        bindmap = bound(-1, PRVM_G_FLOAT(OFS_PARM2), MAX_BINDMAPS-1);
    else
        bindmap = 0; // consistent to "bind"
 
    PRVM_G_FLOAT(OFS_RETURN) = 0;
    if(Key_SetBinding((int)PRVM_G_FLOAT(OFS_PARM0), bindmap, PRVM_G_STRING(OFS_PARM1)))
        PRVM_G_FLOAT(OFS_RETURN) = 1;
}
 
/*
=========
VM_getbindmap
 
vector getbindmaps()
=========
*/
void VM_getbindmaps (prvm_prog_t *prog)
{
    int fg, bg;
    VM_SAFEPARMCOUNT(0, VM_getbindmaps);
    Key_GetBindMap(&fg, &bg);
    PRVM_G_VECTOR(OFS_RETURN)[0] = fg;
    PRVM_G_VECTOR(OFS_RETURN)[1] = bg;
    PRVM_G_VECTOR(OFS_RETURN)[2] = 0;
}
 
/*
=========
VM_setbindmap
 
float setbindmaps(vector bindmap)
=========
*/
void VM_setbindmaps (prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1, VM_setbindmaps);
    PRVM_G_FLOAT(OFS_RETURN) = 0;
    if(PRVM_G_VECTOR(OFS_PARM0)[2] == 0)
        if(Key_SetBindMap((int)PRVM_G_VECTOR(OFS_PARM0)[0], (int)PRVM_G_VECTOR(OFS_PARM0)[1]))
            PRVM_G_FLOAT(OFS_RETURN) = 1;
}
 
/*
========================
VM_gecko_create
 
float[bool] gecko_create( string name )
========================
*/
void VM_gecko_create(prvm_prog_t *prog) {
    // REMOVED
    PRVM_G_FLOAT( OFS_RETURN ) = 0;
}
 
/*
========================
VM_gecko_destroy
 
void gecko_destroy( string name )
========================
*/
void VM_gecko_destroy(prvm_prog_t *prog) {
    // REMOVED
}
 
/*
========================
VM_gecko_navigate
 
void gecko_navigate( string name, string URI )
========================
*/
void VM_gecko_navigate(prvm_prog_t *prog) {
    // REMOVED
}
 
/*
========================
VM_gecko_keyevent
 
float[bool] gecko_keyevent( string name, float key, float eventtype ) 
========================
*/
void VM_gecko_keyevent(prvm_prog_t *prog) {
    // REMOVED
    PRVM_G_FLOAT( OFS_RETURN ) = 0;
}
 
/*
========================
VM_gecko_movemouse
 
void gecko_mousemove( string name, float x, float y )
========================
*/
void VM_gecko_movemouse(prvm_prog_t *prog) {
    // REMOVED
}
 
 
/*
========================
VM_gecko_resize
 
void gecko_resize( string name, float w, float h )
========================
*/
void VM_gecko_resize(prvm_prog_t *prog) {
    // REMOVED
}
 
 
/*
========================
VM_gecko_get_texture_extent
 
vector gecko_get_texture_extent( string name )
========================
*/
void VM_gecko_get_texture_extent(prvm_prog_t *prog) {
    // REMOVED
    PRVM_G_VECTOR(OFS_RETURN)[0] = 0;
    PRVM_G_VECTOR(OFS_RETURN)[1] = 0;
}
 
 
 
/*
==============
VM_makevectors
 
Writes new values for v_forward, v_up, and v_right based on angles
void makevectors(vector angle)
==============
*/
void VM_makevectors (prvm_prog_t *prog)
{
    vec3_t angles, forward, right, up;
    VM_SAFEPARMCOUNT(1, VM_makevectors);
    VectorCopy(PRVM_G_VECTOR(OFS_PARM0), angles);
    AngleVectors(angles, forward, right, up);
    VectorCopy(forward, PRVM_gameglobalvector(v_forward));
    VectorCopy(right, PRVM_gameglobalvector(v_right));
    VectorCopy(up, PRVM_gameglobalvector(v_up));
}
 
/*
==============
VM_vectorvectors
 
Writes new values for v_forward, v_up, and v_right based on the given forward vector
vectorvectors(vector)
==============
*/
void VM_vectorvectors (prvm_prog_t *prog)
{
    vec3_t forward, right, up;
    VM_SAFEPARMCOUNT(1, VM_vectorvectors);
    VectorNormalize2(PRVM_G_VECTOR(OFS_PARM0), forward);
    VectorVectors(forward, right, up);
    VectorCopy(forward, PRVM_gameglobalvector(v_forward));
    VectorCopy(right, PRVM_gameglobalvector(v_right));
    VectorCopy(up, PRVM_gameglobalvector(v_up));
}
 
// float(float number, float quantity) bitshift (EXT_BITSHIFT)
void VM_bitshift (prvm_prog_t *prog)
{
    prvm_int_t n1, n2;
    VM_SAFEPARMCOUNT(2, VM_bitshift);
 
    n1 = (prvm_int_t)fabs((prvm_vec_t)((prvm_int_t)PRVM_G_FLOAT(OFS_PARM0)));
    n2 = (prvm_int_t)PRVM_G_FLOAT(OFS_PARM1);
    if(!n1)
        PRVM_G_FLOAT(OFS_RETURN) = n1;
    else
    if(n2 < 0)
        PRVM_G_FLOAT(OFS_RETURN) = (n1 >> -n2);
    else
        PRVM_G_FLOAT(OFS_RETURN) = (n1 << n2);
}
 
// AltString functions
 
/*
========================
VM_altstr_count
 
float altstr_count(string)
========================
*/
void VM_altstr_count(prvm_prog_t *prog)
{
    const char *altstr, *pos;
    int count;
 
    VM_SAFEPARMCOUNT( 1, VM_altstr_count );
 
    altstr = PRVM_G_STRING( OFS_PARM0 );
    //VM_CheckEmptyString(prog,  altstr );
 
    for( count = 0, pos = altstr ; *pos ; pos++ ) {
        if( *pos == '\\' ) {
            if( !*++pos ) {
                break;
            }
        } else if( *pos == '\'' ) {
            count++;
        }
    }
 
    PRVM_G_FLOAT( OFS_RETURN ) = (prvm_vec_t) (count / 2);
}
 
/*
========================
VM_altstr_prepare
 
string altstr_prepare(string)
========================
*/
void VM_altstr_prepare(prvm_prog_t *prog)
{
    const char *instr, *in;
    char outstr[VM_TEMPSTRING_MAXSIZE];
    size_t outpos;
 
    VM_SAFEPARMCOUNT( 1, VM_altstr_prepare );
 
    instr = PRVM_G_STRING( OFS_PARM0 );
 
    for (in = instr, outpos = 0; *in && outpos < sizeof(outstr) - 1; ++in)
    {
        if (*in == '\'' && outpos < sizeof(outstr) - 2)
        {
            outstr[outpos++] = '\\';
            outstr[outpos++] = '\'';
        }
        else
            outstr[outpos++] = *in;
    }
 
    outstr[outpos] = '\0';
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, outstr, outpos);
}
 
/*
========================
VM_altstr_get
 
string altstr_get(string, float)
========================
*/
void VM_altstr_get(prvm_prog_t *prog)
{
    const char *altstr, *pos;
    char *out;
    int count, size;
    char outstr[VM_TEMPSTRING_MAXSIZE];
 
    VM_SAFEPARMCOUNT( 2, VM_altstr_get );
 
    altstr = PRVM_G_STRING( OFS_PARM0 );
 
    count = (int)PRVM_G_FLOAT( OFS_PARM1 );
    count = count * 2 + 1;
 
    for( pos = altstr ; *pos && count ; pos++ )
        if( *pos == '\\' ) {
            if( !*++pos )
                break;
        } else if( *pos == '\'' )
            count--;
 
    if( !*pos ) {
        PRVM_G_INT( OFS_RETURN ) = 0;
        return;
    }
 
    for( out = outstr, size = sizeof(outstr) - 1 ; size && *pos ; size--, pos++, out++ )
        if( *pos == '\\' ) {
            if( !*++pos )
                break;
            *out = *pos;
            size--;
        } else if( *pos == '\'' )
            break;
        else
            *out = *pos;
 
    *out = '\0';
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, outstr, out - outstr);
}
 
/*
========================
VM_altstr_set
 
string altstr_set(string altstr, float num, string set)
========================
*/
void VM_altstr_set(prvm_prog_t *prog)
{
    int num;
    const char *altstr, *str;
    const char *in;
    char *out;
    char outstr[VM_TEMPSTRING_MAXSIZE];
 
    VM_SAFEPARMCOUNT( 3, VM_altstr_set );
 
    altstr = PRVM_G_STRING( OFS_PARM0 );
 
    num = (int)PRVM_G_FLOAT( OFS_PARM1 );
 
    str = PRVM_G_STRING( OFS_PARM2 );
 
    out = outstr;
    for( num = num * 2 + 1, in = altstr; *in && num; *out++ = *in++ )
        if( *in == '\\' ) {
            if( !*++in ) {
                break;
            }
        } else if( *in == '\'' ) {
            num--;
        }
 
    // copy set in
    for( ; *str; *out++ = *str++ );
    // now jump over the old content
    for( ; *in ; in++ )
        if( *in == '\'' || (*in == '\\' && !*++in) )
            break;
 
    out += dp_strlcpy(out, in, outstr + sizeof(outstr) - out);
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, outstr, out - outstr);
}
 
/*
========================
VM_altstr_ins
insert after num
string  altstr_ins(string altstr, float num, string set)
========================
*/
void VM_altstr_ins(prvm_prog_t *prog)
{
    int num;
    const char *set;
    const char *in;
    char *out;
    char outstr[VM_TEMPSTRING_MAXSIZE];
 
    VM_SAFEPARMCOUNT(3, VM_altstr_ins);
 
    in = PRVM_G_STRING( OFS_PARM0 );
    num = (int)PRVM_G_FLOAT( OFS_PARM1 );
    set = PRVM_G_STRING( OFS_PARM2 );
 
    out = outstr;
    for( num = num * 2 + 2 ; *in && num > 0 ; *out++ = *in++ )
        if( *in == '\\' ) {
            if( !*++in ) {
                break;
            }
        } else if( *in == '\'' ) {
            num--;
        }
 
    *out++ = '\'';
    for( ; *set ; *out++ = *set++ );
    *out++ = '\'';
 
    out += dp_strlcpy(out, in, outstr + sizeof(outstr) - out);
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, outstr, out - outstr);
}
 
 
// BufString functions
//[515]: string buffers support
 
static size_t stringbuffers_sortlength;
 
static void BufStr_Expand(prvm_prog_t *prog, prvm_stringbuffer_t *stringbuffer, int strindex)
{
    if (stringbuffer->max_strings <= strindex)
    {
        char **oldstrings = stringbuffer->strings;
        stringbuffer->max_strings = max(stringbuffer->max_strings * 2, 128);
        while (stringbuffer->max_strings <= strindex)
            stringbuffer->max_strings *= 2;
        stringbuffer->strings = (char **) Mem_Alloc(prog->progs_mempool, stringbuffer->max_strings * sizeof(stringbuffer->strings[0]));
        if (stringbuffer->num_strings > 0)
            memcpy(stringbuffer->strings, oldstrings, stringbuffer->num_strings * sizeof(stringbuffer->strings[0]));
        if (oldstrings)
            Mem_Free(oldstrings);
    }
}
 
static void BufStr_Shrink(prvm_prog_t *prog, prvm_stringbuffer_t *stringbuffer)
{
    // reduce num_strings if there are empty string slots at the end
    while (stringbuffer->num_strings > 0 && stringbuffer->strings[stringbuffer->num_strings - 1] == NULL)
        stringbuffer->num_strings--;
 
    // if empty, free the string pointer array
    if (stringbuffer->num_strings == 0)
    {
        stringbuffer->max_strings = 0;
        if (stringbuffer->strings)
            Mem_Free(stringbuffer->strings);
        stringbuffer->strings = NULL;
    }
}
 
static int BufStr_SortStringsUP (const void *in1, const void *in2)
{
    const char *a, *b;
    a = *((const char **) in1);
    b = *((const char **) in2);
    if(!a || !a[0]) return 1;
    if(!b || !b[0]) return -1;
    return strncmp(a, b, stringbuffers_sortlength);
}
 
static int BufStr_SortStringsDOWN (const void *in1, const void *in2)
{
    const char *a, *b;
    a = *((const char **) in1);
    b = *((const char **) in2);
    if(!a || !a[0]) return 1;
    if(!b || !b[0]) return -1;
    return strncmp(b, a, stringbuffers_sortlength);
}
 
prvm_stringbuffer_t *BufStr_FindCreateReplace (prvm_prog_t *prog, int bufindex, unsigned flags, const char *format)
{
    prvm_stringbuffer_t *stringbuffer;
    int i;
 
    if (bufindex < 0)
        return NULL;
 
    // find buffer with wanted index
    if (bufindex < (int)Mem_ExpandableArray_IndexRange(&prog->stringbuffersarray))
    {
        if ( (stringbuffer = (prvm_stringbuffer_t*) Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, bufindex)) )
        {
            if (stringbuffer->flags & STRINGBUFFER_TEMP)
                stringbuffer->flags = flags; // created but has not been used yet
            return stringbuffer;
        }
        return NULL;
    }
 
    // allocate new buffer with wanted index
    while(1)
    {
        stringbuffer = (prvm_stringbuffer_t *) Mem_ExpandableArray_AllocRecord(&prog->stringbuffersarray);
        stringbuffer->flags = STRINGBUFFER_TEMP;
        for (i = 0;stringbuffer != Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, i);i++);
        if (i == bufindex)
        {
            stringbuffer->flags = flags; // mark as used
            break;
        }
    }
    return stringbuffer;
}
 
void BufStr_Set(prvm_prog_t *prog, prvm_stringbuffer_t *stringbuffer, int strindex, const char *str)
{
    size_t  alloclen;
 
    if (!stringbuffer || strindex < 0)
        return;
 
    BufStr_Expand(prog, stringbuffer, strindex);
    stringbuffer->num_strings = max(stringbuffer->num_strings, strindex + 1);
    if (stringbuffer->strings[strindex])
        Mem_Free(stringbuffer->strings[strindex]);
    stringbuffer->strings[strindex] = NULL;
 
    if (str)
    {
        // not the NULL string!
        alloclen = strlen(str) + 1;
        stringbuffer->strings[strindex] = (char *)Mem_Alloc(prog->progs_mempool, alloclen);
        memcpy(stringbuffer->strings[strindex], str, alloclen);
    }
 
    BufStr_Shrink(prog, stringbuffer);
}
 
void BufStr_Del(prvm_prog_t *prog, prvm_stringbuffer_t *stringbuffer)
{
    int i;
    
    if (!stringbuffer)
        return;
 
    for (i = 0;i < stringbuffer->num_strings;i++)
        if (stringbuffer->strings[i])
            Mem_Free(stringbuffer->strings[i]);
    if (stringbuffer->strings)
        Mem_Free(stringbuffer->strings);
    if(stringbuffer->origin)
        PRVM_Free((char *)stringbuffer->origin);
    Mem_ExpandableArray_FreeRecord(&prog->stringbuffersarray, stringbuffer);
}
 
void BufStr_Flush(prvm_prog_t *prog)
{
    prvm_stringbuffer_t *stringbuffer;
    int i, numbuffers;
 
    numbuffers = (int)Mem_ExpandableArray_IndexRange(&prog->stringbuffersarray);
    for (i = 0; i < numbuffers; i++)
        if ( (stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, i)) )
            BufStr_Del(prog, stringbuffer);
    Mem_ExpandableArray_NewArray(&prog->stringbuffersarray, prog->progs_mempool, sizeof(prvm_stringbuffer_t), 64);
}
 
/*
========================
VM_buf_create
creates new buffer, and returns it's index, returns -1 if failed
float buf_create(prvm_prog_t *prog) = #460;
float newbuf(string format, float flags) = #460;
========================
*/
 
void VM_buf_create (prvm_prog_t *prog)
{
    prvm_stringbuffer_t *stringbuffer;
    int i;
 
    VM_SAFEPARMCOUNTRANGE(0, 2, VM_buf_create);
 
    // VorteX: optional parm1 (buffer format) is unfinished, to keep intact with future databuffers extension must be set to "string"
    if(prog->argc >= 1 && strcmp(PRVM_G_STRING(OFS_PARM0), "string"))
    {
        PRVM_G_FLOAT(OFS_RETURN) = -1;
        return;
    }
    stringbuffer = (prvm_stringbuffer_t *) Mem_ExpandableArray_AllocRecord(&prog->stringbuffersarray);
    for (i = 0;stringbuffer != Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, i);i++);
    stringbuffer->origin = PRVM_AllocationOrigin(prog);
    // optional flags parm
    if (prog->argc >= 2)
        stringbuffer->flags = (int)PRVM_G_FLOAT(OFS_PARM1) & STRINGBUFFER_QCFLAGS;
    PRVM_G_FLOAT(OFS_RETURN) = i;
}
 
 
 
/*
========================
VM_buf_del
deletes buffer and all strings in it
void buf_del(float bufhandle) = #461;
========================
*/
void VM_buf_del (prvm_prog_t *prog)
{
    prvm_stringbuffer_t *stringbuffer;
    VM_SAFEPARMCOUNT(1, VM_buf_del);
    stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM0));
    if (stringbuffer)
        BufStr_Del(prog, stringbuffer);
    else
    {
        VM_Warning(prog, "VM_buf_del: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
}
 
/*
========================
VM_buf_getsize
how many strings are stored in buffer
float buf_getsize(float bufhandle) = #462;
========================
*/
void VM_buf_getsize (prvm_prog_t *prog)
{
    prvm_stringbuffer_t *stringbuffer;
    VM_SAFEPARMCOUNT(1, VM_buf_getsize);
 
    stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM0));
    if(!stringbuffer)
    {
        PRVM_G_FLOAT(OFS_RETURN) = -1;
        VM_Warning(prog, "VM_buf_getsize: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
    else
        PRVM_G_FLOAT(OFS_RETURN) = stringbuffer->num_strings;
}
 
/*
========================
VM_buf_copy
copy all content from one buffer to another, make sure it exists
void buf_copy(float bufhandle_from, float bufhandle_to) = #463;
========================
*/
void VM_buf_copy (prvm_prog_t *prog)
{
    prvm_stringbuffer_t *srcstringbuffer, *dststringbuffer;
    int i;
    VM_SAFEPARMCOUNT(2, VM_buf_copy);
 
    srcstringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM0));
    if(!srcstringbuffer)
    {
        VM_Warning(prog, "VM_buf_copy: invalid source buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
    i = (int)PRVM_G_FLOAT(OFS_PARM1);
    if(i == (int)PRVM_G_FLOAT(OFS_PARM0))
    {
        VM_Warning(prog, "VM_buf_copy: source == destination (%i)\n", i);
        return;
    }
    dststringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM0));
    if(!dststringbuffer)
    {
        VM_Warning(prog, "VM_buf_copy: invalid destination buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM1));
        return;
    }
 
    for (i = 0;i < dststringbuffer->num_strings;i++)
        if (dststringbuffer->strings[i])
            Mem_Free(dststringbuffer->strings[i]);
    if (dststringbuffer->strings)
        Mem_Free(dststringbuffer->strings);
    *dststringbuffer = *srcstringbuffer;
    if (dststringbuffer->max_strings)
        dststringbuffer->strings = (char **)Mem_Alloc(prog->progs_mempool, sizeof(dststringbuffer->strings[0]) * dststringbuffer->max_strings);
 
    for (i = 0;i < dststringbuffer->num_strings;i++)
    {
        if (srcstringbuffer->strings[i])
        {
            size_t stringlen;
            stringlen = strlen(srcstringbuffer->strings[i]) + 1;
            dststringbuffer->strings[i] = (char *)Mem_Alloc(prog->progs_mempool, stringlen);
            memcpy(dststringbuffer->strings[i], srcstringbuffer->strings[i], stringlen);
        }
    }
}
 
/*
========================
VM_buf_sort
sort buffer by beginnings of strings (cmplength defaults it's length)
"backward == true" means that sorting goes upside-down
void buf_sort(float bufhandle, float cmplength, float backward) = #464;
========================
*/
void VM_buf_sort (prvm_prog_t *prog)
{
    prvm_stringbuffer_t *stringbuffer;
    VM_SAFEPARMCOUNT(3, VM_buf_sort);
 
    stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM0));
    if(!stringbuffer)
    {
        VM_Warning(prog, "VM_buf_sort: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
    if(stringbuffer->num_strings <= 0)
    {
        VM_Warning(prog, "VM_buf_sort: tried to sort empty buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
    stringbuffers_sortlength = (int)PRVM_G_FLOAT(OFS_PARM1);
    if(stringbuffers_sortlength <= 0)
        stringbuffers_sortlength = 0x7FFFFFFF;
 
    if(!PRVM_G_FLOAT(OFS_PARM2))
        qsort(stringbuffer->strings, stringbuffer->num_strings, sizeof(char*), BufStr_SortStringsUP);
    else
        qsort(stringbuffer->strings, stringbuffer->num_strings, sizeof(char*), BufStr_SortStringsDOWN);
 
    BufStr_Shrink(prog, stringbuffer);
}
 
/*
========================
VM_buf_implode
concantenates all buffer string into one with "glue" separator and returns it as tempstring
string buf_implode(float bufhandle, string glue) = #465;
========================
*/
void VM_buf_implode (prvm_prog_t *prog)
{
    prvm_stringbuffer_t *stringbuffer;
    char k[VM_TEMPSTRING_MAXSIZE];
    size_t k_len;
    const char *sep;
    int i;
    size_t l;
 
    VM_SAFEPARMCOUNT(2, VM_buf_implode);
 
    stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM0));
    PRVM_G_INT(OFS_RETURN) = OFS_NULL;
    if(!stringbuffer)
    {
        VM_Warning(prog, "VM_buf_implode: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
    if(!stringbuffer->num_strings)
        return;
    sep = PRVM_G_STRING(OFS_PARM1);
    k[0] = '\0';
    k_len = 0;
    for(l = i = 0;i < stringbuffer->num_strings;i++)
    {
        if(stringbuffer->strings[i])
        {
            l += (i > 0 ? strlen(sep) : 0) + strlen(stringbuffer->strings[i]);
            if (l >= sizeof(k) - 1)
                break;
            dp_strlcat(k, sep, sizeof(k));
            k_len = dp_strlcat(k, stringbuffer->strings[i], sizeof(k));
        }
    }
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, k, k_len);
}
 
/*
========================
VM_bufstr_get
get a string from buffer, returns tempstring, dont str_unzone it!
string bufstr_get(float bufhandle, float string_index) = #465;
========================
*/
void VM_bufstr_get (prvm_prog_t *prog)
{
    prvm_stringbuffer_t *stringbuffer;
    int             strindex;
    VM_SAFEPARMCOUNT(2, VM_bufstr_get);
 
    PRVM_G_INT(OFS_RETURN) = OFS_NULL;
    stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM0));
    if(!stringbuffer)
    {
        VM_Warning(prog, "VM_bufstr_get: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
    strindex = (int)PRVM_G_FLOAT(OFS_PARM1);
    if (strindex < 0)
    {
        // VM_Warning(prog, "VM_bufstr_get: invalid string index %i\n", strindex);
        return;
    }
    if (strindex < stringbuffer->num_strings && stringbuffer->strings[strindex])
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, stringbuffer->strings[strindex], strlen(stringbuffer->strings[strindex]));
}
 
/*
========================
VM_bufstr_set
copies a string into selected slot of buffer
void bufstr_set(float bufhandle, float string_index, string str) = #466;
========================
*/
void VM_bufstr_set (prvm_prog_t *prog)
{
    int             strindex;
    prvm_stringbuffer_t *stringbuffer;
    const char      *news;
 
    VM_SAFEPARMCOUNT(3, VM_bufstr_set);
 
    stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM0));
    if(!stringbuffer)
    {
        VM_Warning(prog, "VM_bufstr_set: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
    strindex = (int)PRVM_G_FLOAT(OFS_PARM1);
    if(strindex < 0 || strindex >= 1000000) // huge number of strings
    {
        VM_Warning(prog, "VM_bufstr_set: invalid string index %i\n", strindex);
        return;
    }
 
    news = PRVM_G_STRING(OFS_PARM2);
    BufStr_Set(prog, stringbuffer, strindex, news);
}
 
/*
========================
VM_bufstr_add
adds string to buffer in first free slot and returns its index
"order == true" means that string will be added after last "full" slot
float bufstr_add(float bufhandle, string str, float order) = #467;
========================
*/
void VM_bufstr_add (prvm_prog_t *prog)
{
    int             order, strindex;
    prvm_stringbuffer_t *stringbuffer;
    const char      *string;
    size_t          alloclen;
 
    VM_SAFEPARMCOUNT(3, VM_bufstr_add);
 
    stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM0));
    PRVM_G_FLOAT(OFS_RETURN) = -1;
    if(!stringbuffer)
    {
        VM_Warning(prog, "VM_bufstr_add: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
    if(!PRVM_G_INT(OFS_PARM1)) // NULL string
    {
        VM_Warning(prog, "VM_bufstr_add: can not add an empty string to buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
    string = PRVM_G_STRING(OFS_PARM1);
    order = (int)PRVM_G_FLOAT(OFS_PARM2);
    if(order)
        strindex = stringbuffer->num_strings;
    else
        for (strindex = 0;strindex < stringbuffer->num_strings;strindex++)
            if (stringbuffer->strings[strindex] == NULL)
                break;
 
    BufStr_Expand(prog, stringbuffer, strindex);
 
    stringbuffer->num_strings = max(stringbuffer->num_strings, strindex + 1);
    alloclen = strlen(string) + 1;
    stringbuffer->strings[strindex] = (char *)Mem_Alloc(prog->progs_mempool, alloclen);
    memcpy(stringbuffer->strings[strindex], string, alloclen);
 
    PRVM_G_FLOAT(OFS_RETURN) = strindex;
}
 
/*
========================
VM_bufstr_free
delete string from buffer
void bufstr_free(float bufhandle, float string_index) = #468;
========================
*/
void VM_bufstr_free (prvm_prog_t *prog)
{
    int             i;
    prvm_stringbuffer_t *stringbuffer;
    VM_SAFEPARMCOUNT(2, VM_bufstr_free);
 
    stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM0));
    if(!stringbuffer)
    {
        VM_Warning(prog, "VM_bufstr_free: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
    i = (int)PRVM_G_FLOAT(OFS_PARM1);
    if(i < 0)
    {
        VM_Warning(prog, "VM_bufstr_free: invalid string index %i\n", i);
        return;
    }
 
    if (i < stringbuffer->num_strings)
    {
        if(stringbuffer->strings[i])
            Mem_Free(stringbuffer->strings[i]);
        stringbuffer->strings[i] = NULL;
    }
 
    BufStr_Shrink(prog, stringbuffer);
}
 
/*
========================
VM_buf_loadfile
load a file into string buffer, return 0 or 1
float buf_loadfile(string filename, float bufhandle) = #535;
========================
*/
void VM_buf_loadfile(prvm_prog_t *prog)
{
    size_t alloclen;
    prvm_stringbuffer_t *stringbuffer;
    char string[VM_TEMPSTRING_MAXSIZE];
    int strindex, c, end;
    const char *filename;
    char vabuf[1024];
    qfile_t *file;
 
    VM_SAFEPARMCOUNT(2, VM_buf_loadfile);
 
    // get file
    filename = PRVM_G_STRING(OFS_PARM0);
    file = FS_OpenVirtualFile(va(vabuf, sizeof(vabuf), "data/%s", filename), false);
    if (file == NULL)
        file = FS_OpenVirtualFile(va(vabuf, sizeof(vabuf), "%s", filename), false);
    if (file == NULL)
    {
        if (developer_extra.integer)
            VM_Warning(prog, "VM_buf_loadfile: failed to open file %s\n", filename);
        PRVM_G_FLOAT(OFS_RETURN) = 0;
        return;
    }
 
    // get string buffer
    stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM1));
    if(!stringbuffer)
    {
        VM_Warning(prog, "VM_buf_loadfile: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM1));
        PRVM_G_FLOAT(OFS_RETURN) = 0;
        return;
    }
 
    // read file (append to the end of buffer)
    strindex = stringbuffer->num_strings;
    while(1)
    {
        // read line
        end = 0;
        for (;;)
        {
            c = FS_Getc(file);
            if (c == '\r' || c == '\n' || c < 0)
                break;
            if (end < VM_TEMPSTRING_MAXSIZE - 1)
                string[end++] = c;
        }
        string[end] = 0;
        // remove \n following \r
        if (c == '\r')
        {
            c = FS_Getc(file);
            if (c != '\n')
                FS_UnGetc(file, (unsigned char)c);
        }
        // add and continue
        if (c >= 0 || end)
        {
            BufStr_Expand(prog, stringbuffer, strindex);
            stringbuffer->num_strings = max(stringbuffer->num_strings, strindex + 1);
            alloclen = strlen(string) + 1;
            stringbuffer->strings[strindex] = (char *)Mem_Alloc(prog->progs_mempool, alloclen);
            memcpy(stringbuffer->strings[strindex], string, alloclen);
            strindex = stringbuffer->num_strings;
        }
        else
            break;
    }
 
    // close file
    FS_Close(file);
    PRVM_G_FLOAT(OFS_RETURN) = 1;
}
 
/*
========================
VM_buf_writefile
writes stringbuffer to a file, returns 0 or 1
float buf_writefile(float filehandle, float bufhandle, [, float startpos, float numstrings]) = #468;
========================
*/
 
void VM_buf_writefile(prvm_prog_t *prog)
{
    int filenum, strindex, strnum, strlength;
    prvm_stringbuffer_t *stringbuffer;
 
    VM_SAFEPARMCOUNTRANGE(2, 4, VM_buf_writefile);
 
    // get file
    filenum = (int)PRVM_G_FLOAT(OFS_PARM0);
    if (filenum < 0 || filenum >= PRVM_MAX_OPENFILES)
    {
        VM_Warning(prog, "VM_buf_writefile: invalid file handle %i\n", filenum);
        return;
    }
    if (prog->openfiles[filenum] == NULL)
    {
        VM_Warning(prog, "VM_buf_writefile: no such file handle %i (or file has been closed)\n", filenum);
        return;
    }
    
    // get string buffer
    stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM1));
    if(!stringbuffer)
    {
        VM_Warning(prog, "VM_buf_writefile: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM1));
        PRVM_G_FLOAT(OFS_RETURN) = 0;
        return;
    }
 
    // get start and end parms
    if (prog->argc > 3)
    {
        strindex = (int)PRVM_G_FLOAT(OFS_PARM2);
        strnum = (int)PRVM_G_FLOAT(OFS_PARM3);
    }
    else if (prog->argc > 2)
    {
        strindex = (int)PRVM_G_FLOAT(OFS_PARM2);
        strnum = stringbuffer->num_strings - strindex;
    }
    else
    {
        strindex = 0;
        strnum = stringbuffer->num_strings;
    }
    if (strindex < 0 || strindex >= stringbuffer->num_strings)
    {
        VM_Warning(prog, "VM_buf_writefile: wrong start string index %i\n", strindex);
        PRVM_G_FLOAT(OFS_RETURN) = 0;
        return;
    }
    if (strnum < 0)
    {
        VM_Warning(prog, "VM_buf_writefile: wrong strings count %i\n", strnum);
        PRVM_G_FLOAT(OFS_RETURN) = 0;
        return;
    }
 
    // write
    while(strindex < stringbuffer->num_strings && strnum)
    {
        if (stringbuffer->strings[strindex])
        {
            if ((strlength = (int)strlen(stringbuffer->strings[strindex])))
                FS_Write(prog->openfiles[filenum], stringbuffer->strings[strindex], strlength);
            FS_Write(prog->openfiles[filenum], "\n", 1);
        }
        strindex++;
        strnum--;
    }
 
    PRVM_G_FLOAT(OFS_RETURN) = 1;
}
 
#define MATCH_AUTO     0
#define MATCH_WHOLE    1
#define MATCH_LEFT     2
#define MATCH_RIGHT    3
#define MATCH_MIDDLE   4
#define MATCH_PATTERN  5
 
static const char *detect_match_rule(char *pattern, int *matchrule)
{
    char *ppos, *qpos;
    int patternlength;
 
    patternlength = (int)strlen(pattern);
    ppos = strchr(pattern, '*');
    qpos = strchr(pattern, '?');
    // has ? - pattern
    if (qpos) 
    {
        *matchrule = MATCH_PATTERN;
        return pattern;
    }
    // has * - left, mid, right or pattern
    if (ppos)
    {
        // starts with * - may be right/mid or pattern
        if ((ppos - pattern) == 0)
        {
            ppos = strchr(pattern+1, '*');
            // *something 
            if (!ppos) 
            {
                *matchrule = MATCH_RIGHT;
                return pattern+1;
            }
            // *something*
            if ((ppos - pattern) == patternlength)
            {
                *matchrule = MATCH_MIDDLE;
                *ppos = 0;
                return pattern+1;
            }
            // *som*thing
            *matchrule = MATCH_PATTERN;
            return pattern;
        }
        // end with * - left
        if ((ppos - pattern) == patternlength)
        {
            *matchrule = MATCH_LEFT;
            *ppos = 0;
            return pattern;
        }
        // som*thing
        *matchrule = MATCH_PATTERN;
        return pattern;
    }
    // have no wildcards - whole string
    *matchrule = MATCH_WHOLE;
    return pattern;
}
 
// todo: support UTF8
static qbool match_rule(const char *string, int max_string, const char *pattern, int patternlength, int rule)
{
    const char *mid;
 
    if (rule == 1)
        return !strncmp(string, pattern, max_string) ? true : false;
    if (rule == 2)
        return !strncmp(string, pattern, patternlength) ? true : false;
    if (rule == 3)
    {
        mid = strstr(string, pattern);
        return mid && !*(mid+patternlength);
    }
    if (rule == 4)
        return strstr(string, pattern) ? true : false;
    // pattern
    return matchpattern_with_separator(string, pattern, false, "", false) ? true : false;
}
 
/*
========================
VM_bufstr_find
find an index of bufstring matching rule
float bufstr_find(float bufhandle, string match, float matchrule, float startpos, float step) = #468;
========================
*/
 
void VM_bufstr_find(prvm_prog_t *prog)
{
    prvm_stringbuffer_t *stringbuffer;
    char string[VM_TEMPSTRING_MAXSIZE];
    int matchrule, matchlen, i, step;
    const char *match;
 
    VM_SAFEPARMCOUNTRANGE(3, 5, VM_bufstr_find);
 
    PRVM_G_FLOAT(OFS_RETURN) = -1;
 
    // get string buffer
    stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM0));
    if(!stringbuffer)
    {
        VM_Warning(prog, "VM_bufstr_find: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
 
    // get pattern/rule
    matchrule = (int)PRVM_G_FLOAT(OFS_PARM2);
    if (matchrule < 0 || matchrule > 5)
    {
        VM_Warning(prog, "VM_bufstr_find: invalid match rule %i\n", matchrule);
        return;
    }
    if (matchrule)
        match = PRVM_G_STRING(OFS_PARM1);
    else
    {
        dp_strlcpy(string, PRVM_G_STRING(OFS_PARM1), sizeof(string));
        match = detect_match_rule(string, &matchrule);
    }
    matchlen = (int)strlen(match);
 
    // find
    i = (prog->argc > 3) ? (int)PRVM_G_FLOAT(OFS_PARM3) : 0;
    step = (prog->argc > 4) ? (int)PRVM_G_FLOAT(OFS_PARM4) : 1;
    while(i < stringbuffer->num_strings)
    {
        if (stringbuffer->strings[i] && match_rule(stringbuffer->strings[i], VM_TEMPSTRING_MAXSIZE, match, matchlen, matchrule))
        {
            PRVM_G_FLOAT(OFS_RETURN) = i;
            break;
        }
        i += step;
    }
}
 
/*
========================
VM_matchpattern
float matchpattern(string s, string pattern, float matchrule, float startpos) = #468;
========================
*/
void VM_matchpattern(prvm_prog_t *prog)
{
    const char *s, *match;
    char string[VM_TEMPSTRING_MAXSIZE];
    int matchrule, l;
 
    VM_SAFEPARMCOUNTRANGE(2, 4, VM_matchpattern);
 
    s = PRVM_G_STRING(OFS_PARM0);
 
    // get pattern/rule
    matchrule = (int)PRVM_G_FLOAT(OFS_PARM2);
    if (matchrule < 0 || matchrule > 5)
    {
        VM_Warning(prog, "VM_matchpattern: invalid match rule %i\n", matchrule);
        return;
    }
    if (matchrule)
        match = PRVM_G_STRING(OFS_PARM1);
    else
    {
        dp_strlcpy(string, PRVM_G_STRING(OFS_PARM1), sizeof(string));
        match = detect_match_rule(string, &matchrule);
    }
 
    // offset
    l = (int)strlen(match);
    if (prog->argc > 3)
        s += max(0, min((unsigned int)PRVM_G_FLOAT(OFS_PARM3), strlen(s)-1));
 
    // match
    PRVM_G_FLOAT(OFS_RETURN) = match_rule(s, VM_TEMPSTRING_MAXSIZE, match, l, matchrule);
}
 
/*
========================
VM_buf_cvarlist
========================
*/
 
void VM_buf_cvarlist(prvm_prog_t *prog)
{
    cvar_t *cvar;
    const char *partial, *antipartial;
    size_t len, antilen;
    size_t alloclen;
    qbool ispattern, antiispattern;
    int n;
    prvm_stringbuffer_t *stringbuffer;
    VM_SAFEPARMCOUNTRANGE(2, 3, VM_buf_cvarlist);
 
    stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, (int)PRVM_G_FLOAT(OFS_PARM0));
    if(!stringbuffer)
    {
        VM_Warning(prog, "VM_bufstr_free: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
        return;
    }
 
    partial = PRVM_G_STRING(OFS_PARM1);
    if(!partial)
        len = 0;
    else
        len = strlen(partial);
 
    if(prog->argc == 3)
        antipartial = PRVM_G_STRING(OFS_PARM2);
    else
        antipartial = NULL;
    if(!antipartial)
        antilen = 0;
    else
        antilen = strlen(antipartial);
    
    for (n = 0;n < stringbuffer->num_strings;n++)
        if (stringbuffer->strings[n])
            Mem_Free(stringbuffer->strings[n]);
    if (stringbuffer->strings)
        Mem_Free(stringbuffer->strings);
    stringbuffer->strings = NULL;
 
    ispattern = partial && (strchr(partial, '*') || strchr(partial, '?'));
    antiispattern = antipartial && (strchr(antipartial, '*') || strchr(antipartial, '?'));
 
    n = 0;
    for(cvar = prog->console_cmd->cvars->vars; cvar; cvar = cvar->next)
    {
        if(len && (ispattern ? !matchpattern_with_separator(cvar->name, partial, false, "", false) : strncmp(partial, cvar->name, len)))
            continue;
 
        if(antilen && (antiispattern ? matchpattern_with_separator(cvar->name, antipartial, false, "", false) : !strncmp(antipartial, cvar->name, antilen)))
            continue;
 
        ++n;
    }
 
    stringbuffer->max_strings = stringbuffer->num_strings = n;
    if (stringbuffer->max_strings)
        stringbuffer->strings = (char **)Mem_Alloc(prog->progs_mempool, sizeof(stringbuffer->strings[0]) * stringbuffer->max_strings);
    
    n = 0;
    for(cvar = prog->console_cmd->cvars->vars; cvar; cvar = cvar->next)
    {
        if(len && (ispattern ? !matchpattern_with_separator(cvar->name, partial, false, "", false) : strncmp(partial, cvar->name, len)))
            continue;
 
        if(antilen && (antiispattern ? matchpattern_with_separator(cvar->name, antipartial, false, "", false) : !strncmp(antipartial, cvar->name, antilen)))
            continue;
 
        alloclen = strlen(cvar->name) + 1;
        stringbuffer->strings[n] = (char *)Mem_Alloc(prog->progs_mempool, alloclen);
        memcpy(stringbuffer->strings[n], cvar->name, alloclen);
 
        ++n;
    }
}
 
 
 
 
//=============
 
/*
==============
VM_changeyaw
 
This was a major timewaster in progs, so it was converted to C
==============
*/
void VM_changeyaw (prvm_prog_t *prog)
{
    prvm_edict_t        *ent;
    float       ideal, current, move, speed;
 
    // this is called (VERY HACKISHLY) by VM_SV_MoveToGoal, so it can not use any
    // parameters because they are the parameters to VM_SV_MoveToGoal, not this
    //VM_SAFEPARMCOUNT(0, VM_changeyaw);
 
    ent = PRVM_PROG_TO_EDICT(PRVM_gameglobaledict(self));
    if (ent == prog->edicts)
    {
        VM_Warning(prog, "changeyaw: can not modify world entity\n");
        return;
    }
    if (ent->free)
    {
        VM_Warning(prog, "changeyaw: can not modify free entity\n");
        return;
    }
    current = PRVM_gameedictvector(ent, angles)[1];
    current = ANGLEMOD(current);
    ideal = PRVM_gameedictfloat(ent, ideal_yaw);
    speed = PRVM_gameedictfloat(ent, 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;
    }
 
    current += move;
    PRVM_gameedictvector(ent, angles)[1] = ANGLEMOD(current);
}
 
/*
==============
VM_changepitch
==============
*/
void VM_changepitch (prvm_prog_t *prog)
{
    prvm_edict_t        *ent;
    float       ideal, current, move, speed;
 
    VM_SAFEPARMCOUNT(1, VM_changepitch);
 
    ent = PRVM_G_EDICT(OFS_PARM0);
    if (ent == prog->edicts)
    {
        VM_Warning(prog, "changepitch: can not modify world entity\n");
        return;
    }
    if (ent->free)
    {
        VM_Warning(prog, "changepitch: can not modify free entity\n");
        return;
    }
    current = PRVM_gameedictvector(ent, angles)[0];
    current = ANGLEMOD(current);
    ideal = PRVM_gameedictfloat(ent, idealpitch);
    speed = PRVM_gameedictfloat(ent, pitch_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;
    }
 
    current += move;
    PRVM_gameedictvector(ent, angles)[0] = ANGLEMOD(current);
}
 
 
void VM_uncolorstring (prvm_prog_t *prog)
{
    char szNewString[VM_TEMPSTRING_MAXSIZE];
    size_t szNewString_len;
    const char *szString;
 
    // Prepare Strings
    VM_SAFEPARMCOUNT(1, VM_uncolorstring);
    szString = PRVM_G_STRING(OFS_PARM0);
    szNewString_len = COM_StringDecolorize(szString, 0, szNewString, sizeof(szNewString), true);
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, szNewString, szNewString_len);
}
 
// #221 float(string str, string sub[, float startpos]) strstrofs (FTE_STRINGS)
//strstr, without generating a new string. Use in conjunction with FRIK_FILE's substring for more similar strstr.
void VM_strstrofs (prvm_prog_t *prog)
{
    const char *instr, *match;
    int firstofs;
    VM_SAFEPARMCOUNTRANGE(2, 3, VM_strstrofs);
    instr = PRVM_G_STRING(OFS_PARM0);
    match = PRVM_G_STRING(OFS_PARM1);
    firstofs = (prog->argc > 2)?(int)PRVM_G_FLOAT(OFS_PARM2):0;
    firstofs = (int)u8_bytelen(instr, firstofs);
 
    if (firstofs && (firstofs < 0 || firstofs > (int)strlen(instr)))
    {
        PRVM_G_FLOAT(OFS_RETURN) = -1;
        return;
    }
 
    match = strstr(instr+firstofs, match);
    if (!match)
        PRVM_G_FLOAT(OFS_RETURN) = -1;
    else
        PRVM_G_FLOAT(OFS_RETURN) = u8_strnlen(instr, match-instr);
}
 
//#222 string(string s, float index) str2chr (FTE_STRINGS)
void VM_str2chr (prvm_prog_t *prog)
{
    const char *s;
    Uchar ch;
    int index;
    VM_SAFEPARMCOUNT(2, VM_str2chr);
    s = PRVM_G_STRING(OFS_PARM0);
    index = (int)u8_bytelen(s, (int)PRVM_G_FLOAT(OFS_PARM1));
 
    if((unsigned)index < strlen(s))
    {
        if (utf8_enable.integer)
            ch = u8_getchar_noendptr(s + index);
        else
            ch = (unsigned char)s[index];
        PRVM_G_FLOAT(OFS_RETURN) = ch;
    }
    else
        PRVM_G_FLOAT(OFS_RETURN) = 0;
}
 
//#223 string(float c, ...) chr2str (FTE_STRINGS)
void VM_chr2str (prvm_prog_t *prog)
{
    /*
    char    t[9];
    int     i;
    VM_SAFEPARMCOUNTRANGE(0, 8, VM_chr2str);
    for(i = 0;i < prog->argc && i < (int)sizeof(t) - 1;i++)
        t[i] = (unsigned char)PRVM_G_FLOAT(OFS_PARM0+i*3);
    t[i] = 0;
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, t);
    */
    char t[9 * 4 + 1];
    int i;
    size_t len = 0;
 
    VM_SAFEPARMCOUNTRANGE(0, 8, VM_chr2str);
    for(i = 0; i < prog->argc && len < sizeof(t)-1; ++i)
        len += u8_fromchar((Uchar)PRVM_G_FLOAT(OFS_PARM0+i*3), t + len, sizeof(t)-1);
    t[len] = '\0';
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, t, len);
}
 
static int chrconv_number(int i, int base, int conv)
{
    i -= base;
    switch (conv)
    {
    default:
    case 5:
    case 6:
    case 0:
        break;
    case 1:
        base = '0';
        break;
    case 2:
        base = '0'+128;
        break;
    case 3:
        base = '0'-30;
        break;
    case 4:
        base = '0'+128-30;
        break;
    }
    return i + base;
}
static int chrconv_punct(int i, int base, int conv)
{
    i -= base;
    switch (conv)
    {
    default:
    case 0:
        break;
    case 1:
        base = 0;
        break;
    case 2:
        base = 128;
        break;
    }
    return i + base;
}
 
static int chrchar_alpha(int i, int basec, int baset, int convc, int convt, int charnum)
{
    //convert case and colour seperatly...
 
    i -= baset + basec;
    switch (convt)
    {
    default:
    case 0:
        break;
    case 1:
        baset = 0;
        break;
    case 2:
        baset = 128;
        break;
 
    case 5:
    case 6:
        baset = 128*((charnum&1) == (convt-5));
        break;
    }
 
    switch (convc)
    {
    default:
    case 0:
        break;
    case 1:
        basec = 'a';
        break;
    case 2:
        basec = 'A';
        break;
    }
    return i + basec + baset;
}
// #224 string(float ccase, float calpha, float cnum, string s, ...) strconv (FTE_STRINGS)
//bulk convert a string. change case or colouring.
void VM_strconv (prvm_prog_t *prog)
{
    int ccase, redalpha, rednum;
    unsigned i;
    size_t resbuf_len;
    unsigned char resbuf[VM_TEMPSTRING_MAXSIZE];
    unsigned char *result = resbuf;
 
    VM_SAFEPARMCOUNTRANGE(3, 8, VM_strconv);
 
    ccase = (int) PRVM_G_FLOAT(OFS_PARM0);  //0 same, 1 lower, 2 upper
    redalpha = (int) PRVM_G_FLOAT(OFS_PARM1);   //0 same, 1 white, 2 red,  5 alternate, 6 alternate-alternate
    rednum = (int) PRVM_G_FLOAT(OFS_PARM2); //0 same, 1 white, 2 red, 3 redspecial, 4 whitespecial, 5 alternate, 6 alternate-alternate
    resbuf_len = VM_VarString(prog, 3, (char *) resbuf, sizeof(resbuf));
 
    for (i = 0; i < resbuf_len; i++, result++)  //should this be done backwards?
    {
        if (*result >= '0' && *result <= '9')   //normal numbers...
            *result = chrconv_number(*result, '0', rednum);
        else if (*result >= '0'+128 && *result <= '9'+128)
            *result = chrconv_number(*result, '0'+128, rednum);
        else if (*result >= '0'+128-30 && *result <= '9'+128-30)
            *result = chrconv_number(*result, '0'+128-30, rednum);
        else if (*result >= '0'-30 && *result <= '9'-30)
            *result = chrconv_number(*result, '0'-30, rednum);
 
        else if (*result >= 'a' && *result <= 'z')  //normal numbers...
            *result = chrchar_alpha(*result, 'a', 0, ccase, redalpha, i);
        else if (*result >= 'A' && *result <= 'Z')  //normal numbers...
            *result = chrchar_alpha(*result, 'A', 0, ccase, redalpha, i);
        else if (*result >= 'a'+128 && *result <= 'z'+128)  //normal numbers...
            *result = chrchar_alpha(*result, 'a', 128, ccase, redalpha, i);
        else if (*result >= 'A'+128 && *result <= 'Z'+128)  //normal numbers...
            *result = chrchar_alpha(*result, 'A', 128, ccase, redalpha, i);
 
        else if ((*result & 127) < 16 || !redalpha) //special chars..
            *result = *result;
        else if (*result < 128)
            *result = chrconv_punct(*result, 0, redalpha);
        else
            *result = chrconv_punct(*result, 128, redalpha);
    }
    *result = '\0';
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, (char *)resbuf, result - resbuf);
}
 
// #225 string(float chars, string s, ...) strpad (FTE_STRINGS)
void VM_strpad (prvm_prog_t *prog)
{
    char src[VM_TEMPSTRING_MAXSIZE];
    char destbuf[VM_TEMPSTRING_MAXSIZE];
    size_t destbuf_len;
    int pad;
 
    VM_SAFEPARMCOUNTRANGE(1, 8, VM_strpad);
    pad = (int) PRVM_G_FLOAT(OFS_PARM0);
    VM_VarString(prog, 1, src, sizeof(src));
 
    // note: < 0 = left padding, > 0 = right padding,
    // this is reverse logic of printf!
    destbuf_len = dpsnprintf(destbuf, sizeof(destbuf), "%*s", -pad, src);
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, destbuf, destbuf_len);
}
 
// #226 string(string info, string key, string value, ...) infoadd (FTE_STRINGS)
//uses qw style \key\value strings
void VM_infoadd (prvm_prog_t *prog)
{
    const char *info, *key;
    char value[VM_TEMPSTRING_MAXSIZE];
    char temp[VM_TEMPSTRING_MAXSIZE];
 
    VM_SAFEPARMCOUNTRANGE(2, 8, VM_infoadd);
    info = PRVM_G_STRING(OFS_PARM0);
    key = PRVM_G_STRING(OFS_PARM1);
    VM_VarString(prog, 2, value, sizeof(value));
 
    dp_strlcpy(temp, info, VM_TEMPSTRING_MAXSIZE);
 
    InfoString_SetValue(temp, VM_TEMPSTRING_MAXSIZE, key, value);
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, temp, strlen(temp));
}
 
// #227 string(string info, string key) infoget (FTE_STRINGS)
//uses qw style \key\value strings
void VM_infoget (prvm_prog_t *prog)
{
    const char *info;
    const char *key;
    char value[VM_TEMPSTRING_MAXSIZE];
 
    VM_SAFEPARMCOUNT(2, VM_infoget);
    info = PRVM_G_STRING(OFS_PARM0);
    key = PRVM_G_STRING(OFS_PARM1);
 
    InfoString_GetValue(info, key, value, VM_TEMPSTRING_MAXSIZE);
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, value, strlen(value));
}
 
//#228 float(string s1, string s2, float len) strncmp (FTE_STRINGS)
// also float(string s1, string s2) strcmp (FRIK_FILE)
void VM_strncmp (prvm_prog_t *prog)
{
    const char *s1, *s2;
    VM_SAFEPARMCOUNTRANGE(2, 3, VM_strncmp);
    s1 = PRVM_G_STRING(OFS_PARM0);
    s2 = PRVM_G_STRING(OFS_PARM1);
    if (prog->argc > 2)
    {
        PRVM_G_FLOAT(OFS_RETURN) = strncmp(s1, s2, (size_t)PRVM_G_FLOAT(OFS_PARM2));
    }
    else
    {
        PRVM_G_FLOAT(OFS_RETURN) = strcmp(s1, s2);
    }
}
 
// #229 float(string s1, string s2) strcasecmp (FTE_STRINGS)
// #230 float(string s1, string s2, float len) strncasecmp (FTE_STRINGS)
void VM_strncasecmp (prvm_prog_t *prog)
{
    const char *s1, *s2;
    VM_SAFEPARMCOUNTRANGE(2, 3, VM_strncasecmp);
    s1 = PRVM_G_STRING(OFS_PARM0);
    s2 = PRVM_G_STRING(OFS_PARM1);
    if (prog->argc > 2)
    {
        PRVM_G_FLOAT(OFS_RETURN) = strncasecmp(s1, s2, (size_t)PRVM_G_FLOAT(OFS_PARM2));
    }
    else
    {
        PRVM_G_FLOAT(OFS_RETURN) = strcasecmp(s1, s2);
    }
}
 
// #494 float(float caseinsensitive, string s, ...) crc16
void VM_crc16(prvm_prog_t *prog)
{
    float insensitive;
    char s[VM_TEMPSTRING_MAXSIZE];
    size_t slen;
 
    VM_SAFEPARMCOUNTRANGE(2, 8, VM_crc16);
    insensitive = PRVM_G_FLOAT(OFS_PARM0);
    slen = VM_VarString(prog, 1, s, sizeof(s));
    PRVM_G_FLOAT(OFS_RETURN) = (unsigned short) ((insensitive ? CRC_Block_CaseInsensitive : CRC_Block) ((unsigned char *) s, slen));
}
 
// #639 float(string digest, string data, ...) digest_hex
void VM_digest_hex(prvm_prog_t *prog)
{
    const char *digest;
 
    char out[32];
    char outhex[65];
    int outlen;
 
    char s[VM_TEMPSTRING_MAXSIZE];
    size_t len;
 
    VM_SAFEPARMCOUNTRANGE(2, 8, VM_digest_hex);
    digest = PRVM_G_STRING(OFS_PARM0);
    if(!digest)
        digest = "";
    len = VM_VarString(prog, 1, s, sizeof(s));
 
    outlen = 0;
 
    if(!strcmp(digest, "MD4"))
    {
        outlen = 16;
        mdfour((unsigned char *) out, (unsigned char *) s, len);
    }
    else if(!strcmp(digest, "SHA256") && Crypto_Available())
    {
        outlen = 32;
        sha256((unsigned char *) out, (unsigned char *) s, len);
    }
    // no warning needed on mismatch - we return string_null to QC
 
    if(outlen)
    {
        int i;
        static const char *hexmap = "0123456789abcdef";
        for(i = 0; i < outlen; ++i)
        {
            outhex[2*i]   = hexmap[(out[i] >> 4) & 15];
            outhex[2*i+1] = hexmap[(out[i] >> 0) & 15];
        }
        outhex[2*i] = '\0';
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, outhex, 2*i);
    }
    else
        PRVM_G_INT(OFS_RETURN) = 0;
}
 
void VM_wasfreed (prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(1, VM_wasfreed);
    PRVM_G_FLOAT(OFS_RETURN) = PRVM_G_EDICT(OFS_PARM0)->free;
}
 
void VM_SetTraceGlobals(prvm_prog_t *prog, const trace_t *trace)
{
    PRVM_gameglobalfloat(trace_allsolid) = trace->allsolid;
    PRVM_gameglobalfloat(trace_startsolid) = trace->startsolid;
    PRVM_gameglobalfloat(trace_fraction) = trace->fraction;
    PRVM_gameglobalfloat(trace_inwater) = trace->inwater;
    PRVM_gameglobalfloat(trace_inopen) = trace->inopen;
    VectorCopy(trace->endpos, PRVM_gameglobalvector(trace_endpos));
    VectorCopy(trace->plane.normal, PRVM_gameglobalvector(trace_plane_normal));
    PRVM_gameglobalfloat(trace_plane_dist) = trace->plane.dist;
    PRVM_gameglobaledict(trace_ent) = PRVM_EDICT_TO_PROG(trace->ent ? trace->ent : prog->edicts);
    PRVM_gameglobalfloat(trace_dpstartcontents) = trace->startsupercontents;
    PRVM_gameglobalfloat(trace_dphitcontents) = trace->hitsupercontents;
    PRVM_gameglobalfloat(trace_dphitq3surfaceflags) = trace->hitq3surfaceflags;
    PRVM_gameglobalstring(trace_dphittexturename) = trace->hittexture ? PRVM_SetTempString(prog, trace->hittexture->name, strlen(trace->hittexture->name)) : 0;
}
 
void VM_ClearTraceGlobals(prvm_prog_t *prog)
{
    // clean up all trace globals when leaving the VM (anti-triggerbot safeguard)
    PRVM_gameglobalfloat(trace_allsolid) = 0;
    PRVM_gameglobalfloat(trace_startsolid) = 0;
    PRVM_gameglobalfloat(trace_fraction) = 0;
    PRVM_gameglobalfloat(trace_inwater) = 0;
    PRVM_gameglobalfloat(trace_inopen) = 0;
    VectorClear(PRVM_gameglobalvector(trace_endpos));
    VectorClear(PRVM_gameglobalvector(trace_plane_normal));
    PRVM_gameglobalfloat(trace_plane_dist) = 0;
    PRVM_gameglobaledict(trace_ent) = PRVM_EDICT_TO_PROG(prog->edicts);
    PRVM_gameglobalfloat(trace_dpstartcontents) = 0;
    PRVM_gameglobalfloat(trace_dphitcontents) = 0;
    PRVM_gameglobalfloat(trace_dphitq3surfaceflags) = 0;
    PRVM_gameglobalstring(trace_dphittexturename) = 0;
}
 
//=============
 
void VM_Cmd_Init(prvm_prog_t *prog)
{
    // only init the stuff for the current prog
    VM_Files_Init(prog);
    VM_Search_Init(prog);
}
 
static void animatemodel_reset(prvm_prog_t *prog);
 
void VM_Cmd_Reset(prvm_prog_t *prog)
{
    CL_PurgeOwner( MENUOWNER );
    VM_Search_Reset(prog);
    VM_Files_CloseAll(prog);
    animatemodel_reset(prog);
}
 
// #510 string(string input, ...) uri_escape (DP_QC_URI_ESCAPE)
// does URI escaping on a string (replace evil stuff by %AB escapes)
void VM_uri_escape (prvm_prog_t *prog)
{
    char src[VM_TEMPSTRING_MAXSIZE];
    char dest[VM_TEMPSTRING_MAXSIZE];
    char *p, *q;
    static const char *hex = "0123456789ABCDEF";
 
    VM_SAFEPARMCOUNTRANGE(1, 8, VM_uri_escape);
    VM_VarString(prog, 0, src, sizeof(src));
 
    for(p = src, q = dest; *p && q < dest + sizeof(dest) - 3; ++p)
    {
        if((*p >= 'A' && *p <= 'Z')
            || (*p >= 'a' && *p <= 'z')
            || (*p >= '0' && *p <= '9')
            || (*p == '-')  || (*p == '_') || (*p == '.')
            || (*p == '!')  || (*p == '~')
            || (*p == '\'') || (*p == '(') || (*p == ')'))
            *q++ = *p;
        else
        {
            *q++ = '%';
            *q++ = hex[(*(unsigned char *)p >> 4) & 0xF];
            *q++ = hex[ *(unsigned char *)p       & 0xF];
        }
    }
    *q = '\0';
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, dest, q - dest);
}
 
// #510 string(string input, ...) uri_unescape (DP_QC_URI_ESCAPE)
// does URI unescaping on a string (get back the evil stuff)
void VM_uri_unescape (prvm_prog_t *prog)
{
    char src[VM_TEMPSTRING_MAXSIZE];
    char dest[VM_TEMPSTRING_MAXSIZE];
    char *p, *q;
    int hi, lo;
 
    VM_SAFEPARMCOUNTRANGE(1, 8, VM_uri_unescape);
    VM_VarString(prog, 0, src, sizeof(src));
 
    for(p = src, q = dest; *p; ) // no need to check size, because unescape can't expand
    {
        if(*p == '%')
        {
            if(p[1] >= '0' && p[1] <= '9')
                hi = p[1] - '0';
            else if(p[1] >= 'a' && p[1] <= 'f')
                hi = p[1] - 'a' + 10;
            else if(p[1] >= 'A' && p[1] <= 'F')
                hi = p[1] - 'A' + 10;
            else
                goto nohex;
            if(p[2] >= '0' && p[2] <= '9')
                lo = p[2] - '0';
            else if(p[2] >= 'a' && p[2] <= 'f')
                lo = p[2] - 'a' + 10;
            else if(p[2] >= 'A' && p[2] <= 'F')
                lo = p[2] - 'A' + 10;
            else
                goto nohex;
            if(hi != 0 || lo != 0) // don't unescape NUL bytes
                *q++ = (char) (hi * 0x10 + lo);
            p += 3;
            continue;
        }
 
nohex:
        // otherwise:
        *q++ = *p++;
    }
    *q = '\0';
 
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, dest, q - dest);
}
 
// #502 string(string filename) whichpack (DP_QC_WHICHPACK)
// returns the name of the pack containing a file, or "" if it is not in any pack (but local or non-existant)
void VM_whichpack (prvm_prog_t *prog)
{
    const char *fn, *pack;
 
    VM_SAFEPARMCOUNT(1, VM_whichpack);
    fn = PRVM_G_STRING(OFS_PARM0);
    pack = FS_WhichPack(fn);
 
    PRVM_G_INT(OFS_RETURN) = pack ? PRVM_SetTempString(prog, pack, strlen(pack)) : 0;
}
 
typedef struct
{
    prvm_prog_t *prog;
    double starttime;
    float id;
    char buffer[MAX_INPUTLINE];
    char posttype[128];
    unsigned char *postdata; // free when uri_to_prog_t is freed
    size_t postlen;
    char *sigdata; // free when uri_to_prog_t is freed
    size_t siglen;
}
uri_to_prog_t;
 
static void uri_to_string_callback(int status, size_t length_received, unsigned char *buffer, void *cbdata)
{
    prvm_prog_t *prog;
    uri_to_prog_t *handle = (uri_to_prog_t *) cbdata;
 
    prog = handle->prog;
    if(!prog->loaded)
    {
        // curl reply came too late... so just drop it
        if(handle->postdata)
            Z_Free(handle->postdata);
        if(handle->sigdata)
            Z_Free(handle->sigdata);
        Z_Free(handle);
        return;
    }
 
    if((prog->starttime == handle->starttime) && (PRVM_allfunction(URI_Get_Callback)))
    {
        if(length_received >= sizeof(handle->buffer))
            length_received = sizeof(handle->buffer) - 1;
        handle->buffer[length_received] = '\0';
 
        PRVM_G_FLOAT(OFS_PARM0) = handle->id;
        PRVM_G_FLOAT(OFS_PARM1) = status;
        PRVM_G_INT(OFS_PARM2) = PRVM_SetTempString(prog, handle->buffer, length_received);
        prog->ExecuteProgram(prog, PRVM_allfunction(URI_Get_Callback), "QC function URI_Get_Callback is missing");
    }
 
    if(handle->postdata)
        Z_Free(handle->postdata);
    if(handle->sigdata)
        Z_Free(handle->sigdata);
    Z_Free(handle);
}
 
// uri_get() gets content from an URL and calls a callback "uri_get_callback" with it set as string; an unique ID of the transfer is returned
// returns 1 on success, and then calls the callback with the ID, 0 or the HTTP status code, and the received data in a string
void VM_uri_get (prvm_prog_t *prog)
{
    const char *url;
    float id;
    qbool ret;
    uri_to_prog_t *handle;
    const char *posttype = NULL;
    const char *postseparator = NULL;
    int poststringbuffer = -1;
    int postkeyid = -1;
    const char *query_string = NULL;
    size_t lq;
 
    if(!PRVM_allfunction(URI_Get_Callback))
        prog->error_cmd("uri_get called by %s without URI_Get_Callback defined", prog->name);
 
    VM_SAFEPARMCOUNTRANGE(2, 6, VM_uri_get);
 
    url = PRVM_G_STRING(OFS_PARM0);
    id = PRVM_G_FLOAT(OFS_PARM1);
    if(prog->argc >= 3)
        posttype = PRVM_G_STRING(OFS_PARM2);
    if(prog->argc >= 4)
        postseparator = PRVM_G_STRING(OFS_PARM3);
    if(prog->argc >= 5)
        poststringbuffer = PRVM_G_FLOAT(OFS_PARM4);
    if(prog->argc >= 6)
        postkeyid = PRVM_G_FLOAT(OFS_PARM5);
    handle = (uri_to_prog_t *) Z_Malloc(sizeof(*handle)); // this can't be the prog's mem pool, as curl may call the callback later!
 
    query_string = strchr(url, '?');
    if(query_string)
        ++query_string;
    lq = query_string ? strlen(query_string) : 0;
 
    handle->prog = prog;
    handle->starttime = prog->starttime;
    handle->id = id;
    if(postseparator && posttype && *posttype)
    {
        size_t l = strlen(postseparator);
        if(poststringbuffer >= 0)
        {
            size_t ltotal;
            int i;
            // "implode"
            prvm_stringbuffer_t *stringbuffer;
            stringbuffer = (prvm_stringbuffer_t *)Mem_ExpandableArray_RecordAtIndex(&prog->stringbuffersarray, poststringbuffer);
            if(!stringbuffer)
            {
                VM_Warning(prog, "uri_get: invalid buffer %i\n", (int)PRVM_G_FLOAT(OFS_PARM0));
                return;
            }
            ltotal = 0;
            for(i = 0;i < stringbuffer->num_strings;i++)
            {
                if(i > 0)
                    ltotal += l;
                if(stringbuffer->strings[i])
                    ltotal += strlen(stringbuffer->strings[i]);
            }
            handle->postdata = (unsigned char *)Z_Malloc(ltotal + 1 + lq);
            handle->postlen = ltotal;
            ltotal = 0;
            for(i = 0;i < stringbuffer->num_strings;i++)
            {
                if(i > 0)
                {
                    memcpy(handle->postdata + ltotal, postseparator, l);
                    ltotal += l;
                }
                if(stringbuffer->strings[i])
                {
                    memcpy(handle->postdata + ltotal, stringbuffer->strings[i], strlen(stringbuffer->strings[i]));
                    ltotal += strlen(stringbuffer->strings[i]);
                }
            }
            if(ltotal != handle->postlen)
                prog->error_cmd("%s: string buffer content size mismatch, possible overrun", prog->name);
        }
        else
        {
            handle->postdata = (unsigned char *)Z_Malloc(l + 1 + lq);
            handle->postlen = l;
            memcpy(handle->postdata, postseparator, l);
        }
        handle->postdata[handle->postlen] = 0;
        if(query_string)
            memcpy(handle->postdata + handle->postlen + 1, query_string, lq);
        if(postkeyid >= 0)
        {
            // POST: we sign postdata \0 query string
            size_t ll;
            handle->sigdata = (char *)Z_Malloc(8192);
            dp_strlcpy(handle->sigdata, "X-D0-Blind-ID-Detached-Signature: ", 8192);
            l = strlen(handle->sigdata);
            handle->siglen = Crypto_SignDataDetached(handle->postdata, handle->postlen + 1 + lq, postkeyid, handle->sigdata + l, 8192 - l);
            if(!handle->siglen)
            {
                Z_Free(handle->sigdata);
                handle->sigdata = NULL;
                goto out1;
            }
            ll = base64_encode((unsigned char *) (handle->sigdata + l), handle->siglen, 8192 - l - 1);
            if(!ll)
            {
                Z_Free(handle->sigdata);
                handle->sigdata = NULL;
                goto out1;
            }
            handle->siglen = l + ll;
            handle->sigdata[handle->siglen] = 0;
        }
out1:
        dp_strlcpy(handle->posttype, posttype, sizeof(handle->posttype));
        ret = Curl_Begin_ToMemory_POST(url, handle->sigdata, 0, handle->posttype, handle->postdata, handle->postlen, (unsigned char *) handle->buffer, sizeof(handle->buffer), uri_to_string_callback, handle);
    }
    else
    {
        if(postkeyid >= 0 && query_string)
        {
            // GET: we sign JUST the query string
            size_t l, ll;
            handle->sigdata = (char *)Z_Malloc(8192);
            dp_strlcpy(handle->sigdata, "X-D0-Blind-ID-Detached-Signature: ", 8192);
            l = strlen(handle->sigdata);
            handle->siglen = Crypto_SignDataDetached(query_string, lq, postkeyid, handle->sigdata + l, 8192 - l);
            if(!handle->siglen)
            {
                Z_Free(handle->sigdata);
                handle->sigdata = NULL;
                goto out2;
            }
            ll = base64_encode((unsigned char *) (handle->sigdata + l), handle->siglen, 8192 - l - 1);
            if(!ll)
            {
                Z_Free(handle->sigdata);
                handle->sigdata = NULL;
                goto out2;
            }
            handle->siglen = l + ll;
            handle->sigdata[handle->siglen] = 0;
        }
out2:
        handle->postdata = NULL;
        handle->postlen = 0;
        ret = Curl_Begin_ToMemory_POST(url, handle->sigdata, 0, NULL, NULL, 0, (unsigned char *) handle->buffer, sizeof(handle->buffer), uri_to_string_callback, handle);
    }
    if(ret)
    {
        PRVM_G_INT(OFS_RETURN) = 1;
    }
    else
    {
        if(handle->postdata)
            Z_Free(handle->postdata);
        if(handle->sigdata)
            Z_Free(handle->sigdata);
        Z_Free(handle);
        PRVM_G_INT(OFS_RETURN) = 0;
    }
}
 
void VM_netaddress_resolve (prvm_prog_t *prog)
{
    const char *ip;
    char normalized[128];
    size_t normalized_len;
    int port;
    lhnetaddress_t addr;
 
    VM_SAFEPARMCOUNTRANGE(1, 2, VM_netaddress_resolve);
 
    ip = PRVM_G_STRING(OFS_PARM0);
    port = 0;
    if(prog->argc > 1)
        port = (int) PRVM_G_FLOAT(OFS_PARM1);
 
    if(LHNETADDRESS_FromString(&addr, ip, port) && (normalized_len = LHNETADDRESS_ToString(&addr, normalized, sizeof(normalized), prog->argc > 1)))
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, normalized, normalized_len);
    else
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, "", 0);
}
 
//string(prvm_prog_t *prog) getextresponse = #624; // returns the next extResponse packet that was sent to this client
void VM_CL_getextresponse (prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0,VM_argv);
 
    if (cl_net_extresponse_count <= 0)
        PRVM_G_INT(OFS_RETURN) = OFS_NULL;
    else
    {
        int first;
        --cl_net_extresponse_count;
        first = (cl_net_extresponse_last + NET_EXTRESPONSE_MAX - cl_net_extresponse_count) % NET_EXTRESPONSE_MAX;
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, cl_net_extresponse[first], strlen(cl_net_extresponse[first]));
    }
}
 
void VM_SV_getextresponse (prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0,VM_argv);
 
    if (sv_net_extresponse_count <= 0)
        PRVM_G_INT(OFS_RETURN) = OFS_NULL;
    else
    {
        int first;
        --sv_net_extresponse_count;
        first = (sv_net_extresponse_last + NET_EXTRESPONSE_MAX - sv_net_extresponse_count) % NET_EXTRESPONSE_MAX;
        PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, sv_net_extresponse[first], strlen(sv_net_extresponse[first]));
    }
}
 
// DP_QC_NUDGEOUTOFSOLID
// float(entity ent) nudgeoutofsolid = #567;
void VM_nudgeoutofsolid(prvm_prog_t *prog)
{
    prvm_edict_t *ent;
 
    VM_SAFEPARMCOUNTRANGE(1, 1, VM_nudgeoutofsolid);
 
    ent = PRVM_G_EDICT(OFS_PARM0);
    if (ent == prog->edicts)
    {
        VM_Warning(prog, "nudgeoutofsolid: can not modify world entity\n");
        PRVM_G_FLOAT(OFS_RETURN) = 0;
        return;
    }
    if (ent->free)
    {
        VM_Warning(prog, "nudgeoutofsolid: can not modify free entity\n");
        PRVM_G_FLOAT(OFS_RETURN) = 0;
        return;
    }
 
    PRVM_G_FLOAT(OFS_RETURN) = PHYS_NudgeOutOfSolid(prog, ent);
 
    if (PRVM_G_FLOAT(OFS_RETURN) > 0)
    {
        if (prog == SVVM_prog)
            SV_LinkEdict(ent);
        else if (prog == CLVM_prog)
            CL_LinkEdict(ent);
        else
            Sys_Error("PHYS_NudgeOutOfSolid: cannot be called from %s VM\n", prog->name);
    }
}
 
/*
=========
Common functions between menu.dat and clsprogs
=========
*/
 
//#349 float() isdemo 
void VM_CL_isdemo (prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0, VM_CL_isdemo);
    PRVM_G_FLOAT(OFS_RETURN) = cls.demoplayback;
}
 
//#355 float() videoplaying 
void VM_CL_videoplaying (prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0, VM_CL_videoplaying);
    PRVM_G_FLOAT(OFS_RETURN) = cl_videoplaying;
}
 
/*
=========
VM_M_callfunction
 
    callfunction(...,string function_name)
Extension: pass
=========
*/
void VM_callfunction(prvm_prog_t *prog)
{
    mfunction_t *func;
    const char *s;
 
    VM_SAFEPARMCOUNTRANGE(1, 8, VM_callfunction);
 
    s = PRVM_G_STRING(OFS_PARM0+(prog->argc - 1)*3);
 
    VM_CheckEmptyString(prog, s);
 
    func = PRVM_ED_FindFunction(prog, s);
 
    if(!func)
        prog->error_cmd("VM_callfunction: function %s not found !", s);
    else if (func->first_statement < 0)
    {
        // negative statements are built in functions
        int builtinnumber = -func->first_statement;
        prog->xfunction->builtinsprofile++;
        if (builtinnumber < prog->numbuiltins && prog->builtins[builtinnumber])
            prog->builtins[builtinnumber](prog);
        else
            prog->error_cmd("No such builtin #%i in %s; most likely cause: outdated engine build. Try updating!", builtinnumber, prog->name);
    }
    else if(func - prog->functions > 0)
    {
        prog->argc--;
        prog->ExecuteProgram(prog, func - prog->functions,"");
        prog->argc++;
    }
}
 
/*
=========
VM_isfunction
 
float   isfunction(string function_name)
=========
*/
void VM_isfunction(prvm_prog_t *prog)
{
    mfunction_t *func;
    const char *s;
 
    VM_SAFEPARMCOUNT(1, VM_isfunction);
 
    s = PRVM_G_STRING(OFS_PARM0);
 
    VM_CheckEmptyString(prog, s);
 
    func = PRVM_ED_FindFunction(prog, s);
 
    if(!func)
        PRVM_G_FLOAT(OFS_RETURN) = false;
    else
        PRVM_G_FLOAT(OFS_RETURN) = true;
}
 
/*
=========
VM_sprintf
 
string sprintf(string format, ...)
=========
*/
 
void VM_sprintf(prvm_prog_t *prog)
{
    const char *s, *s0;
    char outbuf[MAX_INPUTLINE];
    char *o = outbuf, *end = outbuf + sizeof(outbuf), *err;
    const char *p;
    int argpos = 1;
    int width, precision, thisarg, flags;
    char formatbuf[16];
    char *f;
    int isfloat;
    static prvm_int_t dummyivec[3] = {0, 0, 0};
    static prvm_vec_t dummyvec[3] = {0, 0, 0};
    char vabuf[1024];
 
#define PRINTF_ALTERNATE 1
#define PRINTF_ZEROPAD 2
#define PRINTF_LEFT 4
#define PRINTF_SPACEPOSITIVE 8
#define PRINTF_SIGNPOSITIVE 16
 
    formatbuf[0] = '%';
 
    s = PRVM_G_STRING(OFS_PARM0);
 
#define GETARG_FLOAT(a) (((a)>=1 && (a)<prog->argc) ? (PRVM_G_FLOAT(OFS_PARM0 + 3 * (a))) : 0)
#define GETARG_VECTOR(a) (((a)>=1 && (a)<prog->argc) ? (PRVM_G_VECTOR(OFS_PARM0 + 3 * (a))) : dummyvec)
#define GETARG_INT(a) (((a)>=1 && (a)<prog->argc) ? (PRVM_G_INT(OFS_PARM0 + 3 * (a))) : 0)
#define GETARG_INTVECTOR(a) (((a)>=1 && (a)<prog->argc) ? ((prvm_int_t*) PRVM_G_VECTOR(OFS_PARM0 + 3 * (a))) : dummyivec)
#define GETARG_STRING(a) (((a)>=1 && (a)<prog->argc) ? (PRVM_G_STRING(OFS_PARM0 + 3 * (a))) : "")
 
    for(;;)
    {
        s0 = s;
        switch(*s)
        {
            case 0:
                goto finished;
            case '%':
                ++s;
 
                if(*s == '%')
                    goto verbatim;
 
                // complete directive format:
                // %3$*1$.*2$ld
                
                width = -1;
                precision = -1;
                thisarg = -1;
                flags = 0;
                isfloat = -1;
 
                // is number following?
                if(*s >= '0' && *s <= '9')
                {
                    width = strtol(s, &err, 10);
                    if(!err)
                    {
                        VM_Warning(prog, "VM_sprintf: invalid directive: %s\n", s0);
                        goto finished;
                    }
                    if(*err == '$')
                    {
                        thisarg = width;
                        width = -1;
                        s = err + 1;
                    }
                    else
                    {
                        if(*s == '0')
                        {
                            flags |= PRINTF_ZEROPAD;
                            if(width == 0)
                                width = -1; // it was just a flag
                        }
                        s = err;
                    }
                }
 
                if(width < 0)
                {
                    for(;;)
                    {
                        switch(*s)
                        {
                            case '#': flags |= PRINTF_ALTERNATE; break;
                            case '0': flags |= PRINTF_ZEROPAD; break;
                            case '-': flags |= PRINTF_LEFT; break;
                            case ' ': flags |= PRINTF_SPACEPOSITIVE; break;
                            case '+': flags |= PRINTF_SIGNPOSITIVE; break;
                            default:
                                goto noflags;
                        }
                        ++s;
                    }
noflags:
                    if(*s == '*')
                    {
                        ++s;
                        if(*s >= '0' && *s <= '9')
                        {
                            width = strtol(s, &err, 10);
                            if(!err || *err != '$')
                            {
                                VM_Warning(prog, "VM_sprintf: invalid directive: %s\n", s0);
                                goto finished;
                            }
                            s = err + 1;
                        }
                        else
                            width = argpos++;
                        width = GETARG_FLOAT(width);
                        if(width < 0)
                        {
                            flags |= PRINTF_LEFT;
                            width = -width;
                        }
                    }
                    else if(*s >= '0' && *s <= '9')
                    {
                        width = strtol(s, &err, 10);
                        if(!err)
                        {
                            VM_Warning(prog, "VM_sprintf: invalid directive: %s\n", s0);
                            goto finished;
                        }
                        s = err;
                        if(width < 0)
                        {
                            flags |= PRINTF_LEFT;
                            width = -width;
                        }
                    }
                    // otherwise width stays -1
                }
 
                if(*s == '.')
                {
                    ++s;
                    if(*s == '*')
                    {
                        ++s;
                        if(*s >= '0' && *s <= '9')
                        {
                            precision = strtol(s, &err, 10);
                            if(!err || *err != '$')
                            {
                                VM_Warning(prog, "VM_sprintf: invalid directive: %s\n", s0);
                                goto finished;
                            }
                            s = err + 1;
                        }
                        else
                            precision = argpos++;
                        precision = GETARG_FLOAT(precision);
                    }
                    else if(*s >= '0' && *s <= '9')
                    {
                        precision = strtol(s, &err, 10);
                        if(!err)
                        {
                            VM_Warning(prog, "VM_sprintf: invalid directive: %s\n", s0);
                            goto finished;
                        }
                        s = err;
                    }
                    else
                    {
                        VM_Warning(prog, "VM_sprintf: invalid directive: %s\n", s0);
                        goto finished;
                    }
                }
 
                for(;;)
                {
                    switch(*s)
                    {
                        case 'h': isfloat = 1; break;
                        case 'l': isfloat = 0; break;
                        case 'L': isfloat = 0; break;
                        case 'j': break;
                        case 'z': break;
                        case 't': break;
                        default:
                            goto nolength;
                    }
                    ++s;
                }
nolength:
 
                // now s points to the final directive char and is no longer changed
                if(isfloat < 0)
                {
                    if(*s == 'i')
                        isfloat = 0;
                    else
                        isfloat = 1;
                }
 
                if(thisarg < 0)
                    thisarg = argpos++;
 
                if(o < end - 1)
                {
                    f = &formatbuf[1];
                    if(*s != 's' && *s != 'c')
                        if(flags & PRINTF_ALTERNATE) *f++ = '#';
                    if(flags & PRINTF_ZEROPAD) *f++ = '0';
                    if(flags & PRINTF_LEFT) *f++ = '-';
                    if(flags & PRINTF_SPACEPOSITIVE) *f++ = ' ';
                    if(flags & PRINTF_SIGNPOSITIVE) *f++ = '+';
                    *f++ = '*';
                    if(precision >= 0)
                    {
                        *f++ = '.';
                        *f++ = '*';
                    }
                    if(*s == 'd' || *s == 'i' || *s == 'o' || *s == 'u' || *s == 'x' || *s == 'X')
                    {
                        // make it use a good integer type
                        for(p = INT_LOSSLESS_FORMAT_SIZE; *p; )
                            *f++ = *p++;
                    }
                    *f++ = *s;
                    *f++ = 0;
 
                    if(width < 0) // not set
                        width = 0;
 
                    switch(*s)
                    {
                        case 'd': case 'i':
                            if(precision < 0) // not set
                                o += dpsnprintf(o, end - o, formatbuf, width, (isfloat ? INT_LOSSLESS_FORMAT_CONVERT_S(GETARG_FLOAT(thisarg)) : INT_LOSSLESS_FORMAT_CONVERT_S(GETARG_INT(thisarg))));
                            else
                                o += dpsnprintf(o, end - o, formatbuf, width, precision, (isfloat ? INT_LOSSLESS_FORMAT_CONVERT_S(GETARG_FLOAT(thisarg)) : INT_LOSSLESS_FORMAT_CONVERT_S(GETARG_INT(thisarg))));
                            break;
                        case 'o': case 'u': case 'x': case 'X':
                            if(precision < 0) // not set
                                o += dpsnprintf(o, end - o, formatbuf, width, (isfloat ? INT_LOSSLESS_FORMAT_CONVERT_U(GETARG_FLOAT(thisarg)) : INT_LOSSLESS_FORMAT_CONVERT_U(GETARG_INT(thisarg))));
                            else
                                o += dpsnprintf(o, end - o, formatbuf, width, precision, (isfloat ? INT_LOSSLESS_FORMAT_CONVERT_U(GETARG_FLOAT(thisarg)) : INT_LOSSLESS_FORMAT_CONVERT_U(GETARG_INT(thisarg))));
                            break;
                        case 'e': case 'E': case 'f': case 'F': case 'g': case 'G':
                            if(precision < 0) // not set
                                o += dpsnprintf(o, end - o, formatbuf, width, (isfloat ? (double) GETARG_FLOAT(thisarg) : (double) GETARG_INT(thisarg)));
                            else
                                o += dpsnprintf(o, end - o, formatbuf, width, precision, (isfloat ? (double) GETARG_FLOAT(thisarg) : (double) GETARG_INT(thisarg)));
                            break;
                        case 'v': case 'V':
                            f[-2] += 'g' - 'v';
                            if(precision < 0) // not set
                                o += dpsnprintf(o, end - o, va(vabuf, sizeof(vabuf), "%s %s %s", /* NESTED SPRINTF IS NESTED */ formatbuf, formatbuf, formatbuf),
                                    width, (isfloat ? (double) GETARG_VECTOR(thisarg)[0] : (double) GETARG_INTVECTOR(thisarg)[0]),
                                    width, (isfloat ? (double) GETARG_VECTOR(thisarg)[1] : (double) GETARG_INTVECTOR(thisarg)[1]),
                                    width, (isfloat ? (double) GETARG_VECTOR(thisarg)[2] : (double) GETARG_INTVECTOR(thisarg)[2])
                                );
                            else
                                o += dpsnprintf(o, end - o, va(vabuf, sizeof(vabuf), "%s %s %s", /* NESTED SPRINTF IS NESTED */ formatbuf, formatbuf, formatbuf),
                                    width, precision, (isfloat ? (double) GETARG_VECTOR(thisarg)[0] : (double) GETARG_INTVECTOR(thisarg)[0]),
                                    width, precision, (isfloat ? (double) GETARG_VECTOR(thisarg)[1] : (double) GETARG_INTVECTOR(thisarg)[1]),
                                    width, precision, (isfloat ? (double) GETARG_VECTOR(thisarg)[2] : (double) GETARG_INTVECTOR(thisarg)[2])
                                );
                            break;
                        case 'c':
                            if(flags & PRINTF_ALTERNATE)
                            {
                                if(precision < 0) // not set
                                    o += dpsnprintf(o, end - o, formatbuf, width, (isfloat ? (unsigned int) GETARG_FLOAT(thisarg) : (unsigned int) GETARG_INT(thisarg)));
                                else
                                    o += dpsnprintf(o, end - o, formatbuf, width, precision, (isfloat ? (unsigned int) GETARG_FLOAT(thisarg) : (unsigned int) GETARG_INT(thisarg)));
                            }
                            else
                            {
                                unsigned int c = (isfloat ? (unsigned int) GETARG_FLOAT(thisarg) : (unsigned int) GETARG_INT(thisarg));
                                char charbuf16[16];
                                const char *buf = u8_encodech(c, NULL, charbuf16);
                                if(!buf)
                                    buf = "";
                                if(precision < 0) // not set
                                    precision = end - o - 1;
                                o += u8_strpad(o, end - o, buf, (flags & PRINTF_LEFT) != 0, width, precision);
                            }
                            break;
                        //spike FIXME -- 'S' for quoted tokenize-safe-or-print escaping of strings so stuff can safely survive console commands.
                        case 's':
                            if(flags & PRINTF_ALTERNATE)
                            {
                                if(precision < 0) // not set
                                    o += dpsnprintf(o, end - o, formatbuf, width, GETARG_STRING(thisarg));
                                else
                                    o += dpsnprintf(o, end - o, formatbuf, width, precision, GETARG_STRING(thisarg));
                            }
                            else
                            {
                                if(precision < 0) // not set
                                    precision = end - o - 1;
                                if(flags & PRINTF_SIGNPOSITIVE)
                                    o += u8_strpad(o, end - o, GETARG_STRING(thisarg), (flags & PRINTF_LEFT) != 0, width, precision);
                                else
                                    o += u8_strpad_colorcodes(o, end - o, GETARG_STRING(thisarg), (flags & PRINTF_LEFT) != 0, width, precision);
                            }
                            break;
                        default:
                            VM_Warning(prog, "VM_sprintf: invalid directive: %s\n", s0);
                            goto finished;
                    }
                }
                ++s;
                break;
            default:
verbatim:
                if(o < end - 1)
                    *o++ = *s;
                ++s;
                break;
        }
    }
 
finished:
    *o = '\0';
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, outbuf, o - outbuf);
}
 
 
// surface querying
 
static model_t *getmodel(prvm_prog_t *prog, prvm_edict_t *ed)
{
    if (prog == SVVM_prog)
        return SV_GetModelFromEdict(ed);
    else if (prog == CLVM_prog)
        return CL_GetModelFromEdict(ed);
    else
        return NULL;
}
 
struct animatemodel_cache
{
    model_t *model;
    frameblend_t frameblend[MAX_FRAMEBLENDS];
    skeleton_t *skeleton_p;
    skeleton_t skeleton;
    float *data_vertex3f;
    float *data_svector3f;
    float *data_tvector3f;
    float *data_normal3f;
    int max_vertices;
    float *buf_vertex3f;
    float *buf_svector3f;
    float *buf_tvector3f;
    float *buf_normal3f;
};
 
static void animatemodel_reset(prvm_prog_t *prog)
{
    if (!prog->animatemodel_cache)
        return;
    if(prog->animatemodel_cache->buf_vertex3f) Mem_Free(prog->animatemodel_cache->buf_vertex3f);
    if(prog->animatemodel_cache->buf_svector3f) Mem_Free(prog->animatemodel_cache->buf_svector3f);
    if(prog->animatemodel_cache->buf_tvector3f) Mem_Free(prog->animatemodel_cache->buf_tvector3f);
    if(prog->animatemodel_cache->buf_normal3f) Mem_Free(prog->animatemodel_cache->buf_normal3f);
    Mem_Free(prog->animatemodel_cache);
}
 
static void animatemodel(prvm_prog_t *prog, model_t *model, prvm_edict_t *ed)
{
    skeleton_t *skeleton;
    int skeletonindex = -1;
    qbool need = false;
    struct animatemodel_cache *animatemodel_cache;
    if (!prog->animatemodel_cache)
    {
        prog->animatemodel_cache = (struct animatemodel_cache *)Mem_Alloc(prog->progs_mempool, sizeof(struct animatemodel_cache));
        memset(prog->animatemodel_cache, 0, sizeof(struct animatemodel_cache));
    }
    animatemodel_cache = prog->animatemodel_cache;
    if(!(model->surfmesh.isanimated && model->AnimateVertices))
    {
        animatemodel_cache->data_vertex3f = model->surfmesh.data_vertex3f;
        animatemodel_cache->data_svector3f = model->surfmesh.data_svector3f;
        animatemodel_cache->data_tvector3f = model->surfmesh.data_tvector3f;
        animatemodel_cache->data_normal3f = model->surfmesh.data_normal3f;
        return;
    }
    need |= (animatemodel_cache->model != model);
    VM_GenerateFrameGroupBlend(prog, ed->priv.server->framegroupblend, ed);
    VM_FrameBlendFromFrameGroupBlend(ed->priv.server->frameblend, ed->priv.server->framegroupblend, model, PRVM_serverglobalfloat(time));
    need |= (memcmp(&animatemodel_cache->frameblend, &ed->priv.server->frameblend, sizeof(ed->priv.server->frameblend))) != 0;
    skeletonindex = (int)PRVM_gameedictfloat(ed, skeletonindex) - 1;
    if (!(skeletonindex >= 0 && skeletonindex < MAX_EDICTS && (skeleton = prog->skeletons[skeletonindex]) && skeleton->model->num_bones == ed->priv.server->skeleton.model->num_bones))
        skeleton = NULL;
    need |= (animatemodel_cache->skeleton_p != skeleton);
    if(skeleton)
        need |= (memcmp(&animatemodel_cache->skeleton, skeleton, sizeof(ed->priv.server->skeleton))) != 0;
    if(!need)
        return;
    if(model->surfmesh.num_vertices > animatemodel_cache->max_vertices)
    {
        animatemodel_cache->max_vertices = model->surfmesh.num_vertices * 2;
        if(animatemodel_cache->buf_vertex3f) Mem_Free(animatemodel_cache->buf_vertex3f);
        if(animatemodel_cache->buf_svector3f) Mem_Free(animatemodel_cache->buf_svector3f);
        if(animatemodel_cache->buf_tvector3f) Mem_Free(animatemodel_cache->buf_tvector3f);
        if(animatemodel_cache->buf_normal3f) Mem_Free(animatemodel_cache->buf_normal3f);
        animatemodel_cache->buf_vertex3f = (float *)Mem_Alloc(prog->progs_mempool, sizeof(float[3]) * animatemodel_cache->max_vertices);
        animatemodel_cache->buf_svector3f = (float *)Mem_Alloc(prog->progs_mempool, sizeof(float[3]) * animatemodel_cache->max_vertices);
        animatemodel_cache->buf_tvector3f = (float *)Mem_Alloc(prog->progs_mempool, sizeof(float[3]) * animatemodel_cache->max_vertices);
        animatemodel_cache->buf_normal3f = (float *)Mem_Alloc(prog->progs_mempool, sizeof(float[3]) * animatemodel_cache->max_vertices);
    }
    animatemodel_cache->data_vertex3f = animatemodel_cache->buf_vertex3f;
    animatemodel_cache->data_svector3f = animatemodel_cache->buf_svector3f;
    animatemodel_cache->data_tvector3f = animatemodel_cache->buf_tvector3f;
    animatemodel_cache->data_normal3f = animatemodel_cache->buf_normal3f;
    VM_UpdateEdictSkeleton(prog, ed, model, ed->priv.server->frameblend);
    model->AnimateVertices(model, ed->priv.server->frameblend, &ed->priv.server->skeleton, animatemodel_cache->data_vertex3f, animatemodel_cache->data_normal3f, animatemodel_cache->data_svector3f, animatemodel_cache->data_tvector3f);
    animatemodel_cache->model = model;
    memcpy(&animatemodel_cache->frameblend, &ed->priv.server->frameblend, sizeof(ed->priv.server->frameblend));
    animatemodel_cache->skeleton_p = skeleton;
    if(skeleton)
        memcpy(&animatemodel_cache->skeleton, skeleton, sizeof(ed->priv.server->skeleton));
}
 
static void getmatrix(prvm_prog_t *prog, prvm_edict_t *ed, matrix4x4_t *out)
{
    if (prog == SVVM_prog)
        SV_GetEntityMatrix(prog, ed, out, false);
    else if (prog == CLVM_prog)
        CL_GetEntityMatrix(prog, ed, out, false);
    else
        *out = identitymatrix;
}
 
static void applytransform_forward(prvm_prog_t *prog, const vec3_t in, prvm_edict_t *ed, vec3_t out)
{
    matrix4x4_t m;
    getmatrix(prog, ed, &m);
    Matrix4x4_Transform(&m, in, out);
}
 
static void applytransform_forward_direction(prvm_prog_t *prog, const vec3_t in, prvm_edict_t *ed, vec3_t out)
{
    matrix4x4_t m;
    getmatrix(prog, ed, &m);
    Matrix4x4_Transform3x3(&m, in, out);
}
 
static void applytransform_inverted(prvm_prog_t *prog, const vec3_t in, prvm_edict_t *ed, vec3_t out)
{
    matrix4x4_t m, n;
    getmatrix(prog, ed, &m);
    Matrix4x4_Invert_Full(&n, &m);
    Matrix4x4_Transform3x3(&n, in, out);
}
 
static void applytransform_forward_normal(prvm_prog_t *prog, const vec3_t in, prvm_edict_t *ed, vec3_t out)
{
    matrix4x4_t m;
    float p[4];
    getmatrix(prog, ed, &m);
    Matrix4x4_TransformPositivePlane(&m, in[0], in[1], in[2], 0, p);
    VectorCopy(p, out);
}
 
static void clippointtosurface(prvm_prog_t *prog, prvm_edict_t *ed, model_t *model, msurface_t *surface, vec3_t p, vec3_t out)
{
    int i, j, k;
    float *v[3], facenormal[3], edgenormal[3], sidenormal[3], temp[3], offsetdist, dist, bestdist;
    const int *e;
    animatemodel(prog, model, ed);
    bestdist = 1000000000;
    VectorCopy(p, out);
    for (i = 0, e = (model->surfmesh.data_element3i + 3 * surface->num_firsttriangle);i < surface->num_triangles;i++, e += 3)
    {
        // clip original point to each triangle of the surface and find the
        // triangle that is closest
        v[0] = prog->animatemodel_cache->data_vertex3f + e[0] * 3;
        v[1] = prog->animatemodel_cache->data_vertex3f + e[1] * 3;
        v[2] = prog->animatemodel_cache->data_vertex3f + e[2] * 3;
        TriangleNormal(v[0], v[1], v[2], facenormal);
        VectorNormalize(facenormal);
        offsetdist = DotProduct(v[0], facenormal) - DotProduct(p, facenormal);
        VectorMA(p, offsetdist, facenormal, temp);
        for (j = 0, k = 2;j < 3;k = j, j++)
        {
            VectorSubtract(v[k], v[j], edgenormal);
            CrossProduct(edgenormal, facenormal, sidenormal);
            VectorNormalize(sidenormal);
            offsetdist = DotProduct(v[k], sidenormal) - DotProduct(temp, sidenormal);
            if (offsetdist < 0)
                VectorMA(temp, offsetdist, sidenormal, temp);
        }
        dist = VectorDistance2(temp, p);
        if (bestdist > dist)
        {
            bestdist = dist;
            VectorCopy(temp, out);
        }
    }
}
 
static msurface_t *getsurface(model_t *model, int surfacenum)
{
    if (surfacenum < 0 || surfacenum >= model->submodelsurfaces_end - model->submodelsurfaces_start)
        return NULL;
    return model->data_surfaces + surfacenum + model->submodelsurfaces_start;
}
 
 
//PF_getsurfacenumpoints, // #434 float(entity e, float s) getsurfacenumpoints = #434;
void VM_getsurfacenumpoints(prvm_prog_t *prog)
{
    model_t *model;
    msurface_t *surface;
    VM_SAFEPARMCOUNT(2, VM_getsurfacenumpoints);
    // return 0 if no such surface
    if (!(model = getmodel(prog, PRVM_G_EDICT(OFS_PARM0))) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
    {
        PRVM_G_FLOAT(OFS_RETURN) = 0;
        return;
    }
 
    // note: this (incorrectly) assumes it is a simple polygon
    PRVM_G_FLOAT(OFS_RETURN) = surface->num_vertices;
}
//PF_getsurfacepoint,     // #435 vector(entity e, float s, float n) getsurfacepoint = #435;
void VM_getsurfacepoint(prvm_prog_t *prog)
{
    prvm_edict_t *ed;
    model_t *model;
    msurface_t *surface;
    int pointnum;
    vec3_t result;
    VM_SAFEPARMCOUNT(3, VM_getsurfacepoint);
    VectorClear(PRVM_G_VECTOR(OFS_RETURN));
    ed = PRVM_G_EDICT(OFS_PARM0);
    if (!(model = getmodel(prog, ed)) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
        return;
    // note: this (incorrectly) assumes it is a simple polygon
    pointnum = (int)PRVM_G_FLOAT(OFS_PARM2);
    if (pointnum < 0 || pointnum >= surface->num_vertices)
        return;
    animatemodel(prog, model, ed);
    applytransform_forward(prog, &(prog->animatemodel_cache->data_vertex3f + 3 * surface->num_firstvertex)[pointnum * 3], ed, result);
    VectorCopy(result, PRVM_G_VECTOR(OFS_RETURN));
}
//PF_getsurfacepointattribute,     // #486 vector(entity e, float s, float n, float a) getsurfacepointattribute = #486;
// float SPA_POSITION = 0;
// float SPA_S_AXIS = 1;
// float SPA_T_AXIS = 2;
// float SPA_R_AXIS = 3; // same as SPA_NORMAL
// float SPA_TEXCOORDS0 = 4;
// float SPA_LIGHTMAP0_TEXCOORDS = 5;
// float SPA_LIGHTMAP0_COLOR = 6;
void VM_getsurfacepointattribute(prvm_prog_t *prog)
{
    prvm_edict_t *ed;
    model_t *model;
    msurface_t *surface;
    int pointnum;
    int attributetype;
    vec3_t result;
 
    VM_SAFEPARMCOUNT(4, VM_getsurfacepointattribute);
    VectorClear(PRVM_G_VECTOR(OFS_RETURN));
    ed = PRVM_G_EDICT(OFS_PARM0);
    if (!(model = getmodel(prog, ed)) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
        return;
    pointnum = (int)PRVM_G_FLOAT(OFS_PARM2);
    if (pointnum < 0 || pointnum >= surface->num_vertices)
        return;
    attributetype = (int) PRVM_G_FLOAT(OFS_PARM3);
 
    animatemodel(prog, model, ed);
 
    switch( attributetype ) {
        // float SPA_POSITION = 0;
        case 0:
            applytransform_forward(prog, &(prog->animatemodel_cache->data_vertex3f + 3 * surface->num_firstvertex)[pointnum * 3], ed, result);
            VectorCopy(result, PRVM_G_VECTOR(OFS_RETURN));
            break;
        // float SPA_S_AXIS = 1;
        case 1:
            applytransform_forward_direction(prog, &(prog->animatemodel_cache->data_svector3f + 3 * surface->num_firstvertex)[pointnum * 3], ed, result);
            VectorCopy(result, PRVM_G_VECTOR(OFS_RETURN));
            break;
        // float SPA_T_AXIS = 2;
        case 2:
            applytransform_forward_direction(prog, &(prog->animatemodel_cache->data_tvector3f + 3 * surface->num_firstvertex)[pointnum * 3], ed, result);
            VectorCopy(result, PRVM_G_VECTOR(OFS_RETURN));
            break;
        // float SPA_R_AXIS = 3; // same as SPA_NORMAL
        case 3:
            applytransform_forward_direction(prog, &(prog->animatemodel_cache->data_normal3f + 3 * surface->num_firstvertex)[pointnum * 3], ed, result);
            VectorCopy(result, PRVM_G_VECTOR(OFS_RETURN));
            break;
        // float SPA_TEXCOORDS0 = 4;
        case 4: {
            float *texcoord = &(model->surfmesh.data_texcoordtexture2f + 2 * surface->num_firstvertex)[pointnum * 2];
            result[0] = texcoord[0];
            result[1] = texcoord[1];
            result[2] = 0.0f;
            VectorCopy(result, PRVM_G_VECTOR(OFS_RETURN));
            break;
        }
        // float SPA_LIGHTMAP0_TEXCOORDS = 5;
        case 5: {
            float *texcoord = &(model->surfmesh.data_texcoordlightmap2f + 2 * surface->num_firstvertex)[pointnum * 2];
            result[0] = texcoord[0];
            result[1] = texcoord[1];
            result[2] = 0.0f;
            VectorCopy(result, PRVM_G_VECTOR(OFS_RETURN));
            break;
        }
        // float SPA_LIGHTMAP0_COLOR = 6;
        case 6:
            // ignore alpha for now..
            VectorCopy( &(model->surfmesh.data_lightmapcolor4f + 4 * surface->num_firstvertex)[pointnum * 4], PRVM_G_VECTOR(OFS_RETURN));
            break;
        default:
            VectorSet( PRVM_G_VECTOR(OFS_RETURN), 0.0f, 0.0f, 0.0f );
            break;
    }
}
//PF_getsurfacenormal,    // #436 vector(entity e, float s) getsurfacenormal = #436;
void VM_getsurfacenormal(prvm_prog_t *prog)
{
    model_t *model;
    msurface_t *surface;
    vec3_t normal;
    vec3_t result;
    VM_SAFEPARMCOUNT(2, VM_getsurfacenormal);
    VectorClear(PRVM_G_VECTOR(OFS_RETURN));
    if (!(model = getmodel(prog, PRVM_G_EDICT(OFS_PARM0))) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
        return;
    // note: this only returns the first triangle, so it doesn't work very
    // well for curved surfaces or arbitrary meshes
    animatemodel(prog, model, PRVM_G_EDICT(OFS_PARM0));
    TriangleNormal((prog->animatemodel_cache->data_vertex3f + 3 * surface->num_firstvertex), (prog->animatemodel_cache->data_vertex3f + 3 * surface->num_firstvertex) + 3, (prog->animatemodel_cache->data_vertex3f + 3 * surface->num_firstvertex) + 6, normal);
    applytransform_forward_normal(prog, normal, PRVM_G_EDICT(OFS_PARM0), result);
    VectorNormalize(result);
    VectorCopy(result, PRVM_G_VECTOR(OFS_RETURN));
}
//PF_getsurfacetexture,   // #437 string(entity e, float s) getsurfacetexture = #437;
void VM_getsurfacetexture(prvm_prog_t *prog)
{
    model_t *model;
    msurface_t *surface;
 
    VM_SAFEPARMCOUNT(2, VM_getsurfacetexture);
    PRVM_G_INT(OFS_RETURN) = OFS_NULL;
    if (!(model = getmodel(prog, PRVM_G_EDICT(OFS_PARM0))) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
        return;
    PRVM_G_INT(OFS_RETURN) = PRVM_SetTempString(prog, surface->texture->name, strlen(surface->texture->name));
}
//PF_getsurfacenearpoint, // #438 float(entity e, vector p) getsurfacenearpoint = #438;
void VM_getsurfacenearpoint(prvm_prog_t *prog)
{
    int surfacenum, best;
    vec3_t clipped, p;
    vec_t dist, bestdist;
    prvm_edict_t *ed;
    model_t *model;
    msurface_t *surface;
    vec3_t point;
    VM_SAFEPARMCOUNT(2, VM_getsurfacenearpoint);
    PRVM_G_FLOAT(OFS_RETURN) = -1;
    ed = PRVM_G_EDICT(OFS_PARM0);
    VectorCopy(PRVM_G_VECTOR(OFS_PARM1), point);
 
    if (!ed || ed->free)
        return;
    model = getmodel(prog, ed);
    if (!model || !model->num_surfaces)
        return;
 
    animatemodel(prog, model, ed);
 
    applytransform_inverted(prog, point, ed, p);
    best = -1;
    bestdist = 1000000000;
    for (surfacenum = model->submodelsurfaces_start;surfacenum < model->submodelsurfaces_end;surfacenum++)
    {
        surface = model->data_surfaces + surfacenum;
        // first see if the nearest point on the surface's box is closer than the previous match
        clipped[0] = bound(surface->mins[0], p[0], surface->maxs[0]) - p[0];
        clipped[1] = bound(surface->mins[1], p[1], surface->maxs[1]) - p[1];
        clipped[2] = bound(surface->mins[2], p[2], surface->maxs[2]) - p[2];
        dist = VectorLength2(clipped);
        if (dist < bestdist)
        {
            // it is, check the nearest point on the actual geometry
            clippointtosurface(prog, ed, model, surface, p, clipped);
            VectorSubtract(clipped, p, clipped);
            dist += VectorLength2(clipped);
            if (dist < bestdist)
            {
                // that's closer too, store it as the best match
                best = surfacenum - model->submodelsurfaces_start;
                bestdist = dist;
            }
        }
    }
    PRVM_G_FLOAT(OFS_RETURN) = best;
}
//PF_getsurfaceclippedpoint, // #439 vector(entity e, float s, vector p) getsurfaceclippedpoint = #439;
void VM_getsurfaceclippedpoint(prvm_prog_t *prog)
{
    prvm_edict_t *ed;
    model_t *model;
    msurface_t *surface;
    vec3_t p, out, inp;
    VM_SAFEPARMCOUNT(3, VM_getsurfaceclippedpoint);
    VectorClear(PRVM_G_VECTOR(OFS_RETURN));
    ed = PRVM_G_EDICT(OFS_PARM0);
    if (!(model = getmodel(prog, ed)) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
        return;
    animatemodel(prog, model, ed);
    VectorCopy(PRVM_G_VECTOR(OFS_PARM2), inp);
    applytransform_inverted(prog, inp, ed, p);
    clippointtosurface(prog, ed, model, surface, p, out);
    VectorAdd(out, PRVM_serveredictvector(ed, origin), PRVM_G_VECTOR(OFS_RETURN));
}
 
//PF_getsurfacenumtriangles, // #??? float(entity e, float s) getsurfacenumtriangles = #???;
void VM_getsurfacenumtriangles(prvm_prog_t *prog)
{
       model_t *model;
       msurface_t *surface;
       VM_SAFEPARMCOUNT(2, VM_getsurfacenumtriangles);
       // return 0 if no such surface
       if (!(model = getmodel(prog, PRVM_G_EDICT(OFS_PARM0))) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
       {
               PRVM_G_FLOAT(OFS_RETURN) = 0;
               return;
       }
 
       PRVM_G_FLOAT(OFS_RETURN) = surface->num_triangles;
}
//PF_getsurfacetriangle,     // #??? vector(entity e, float s, float n) getsurfacetriangle = #???;
void VM_getsurfacetriangle(prvm_prog_t *prog)
{
       const vec3_t d = {-1, -1, -1};
       prvm_edict_t *ed;
       model_t *model;
       msurface_t *surface;
       int trinum;
       VM_SAFEPARMCOUNT(3, VM_getsurfacetriangle);
       VectorClear(PRVM_G_VECTOR(OFS_RETURN));
       ed = PRVM_G_EDICT(OFS_PARM0);
       if (!(model = getmodel(prog, ed)) || !(surface = getsurface(model, (int)PRVM_G_FLOAT(OFS_PARM1))))
               return;
       trinum = (int)PRVM_G_FLOAT(OFS_PARM2);
       if (trinum < 0 || trinum >= surface->num_triangles)
               return;
       // FIXME: implement rotation/scaling
       VectorMA(&(model->surfmesh.data_element3i + 3 * surface->num_firsttriangle)[trinum * 3], surface->num_firstvertex, d, PRVM_G_VECTOR(OFS_RETURN));
}
 
//
// physics builtins
//
 
#ifdef USEODE
#define VM_physics_ApplyCmd(ed,f) if (!ed->priv.server->ode_body) VM_physics_newstackfunction(prog, ed, f); else World_Physics_ApplyCmd(ed, f)
 
static edict_odefunc_t *VM_physics_newstackfunction(prvm_prog_t *prog, prvm_edict_t *ed, edict_odefunc_t *f)
{
    edict_odefunc_t *newfunc, *func;
 
    newfunc = (edict_odefunc_t *)Mem_Alloc(prog->progs_mempool, sizeof(edict_odefunc_t));
    memcpy(newfunc, f, sizeof(edict_odefunc_t));
    newfunc->next = NULL;
    if (!ed->priv.server->ode_func)
        ed->priv.server->ode_func = newfunc;
    else
    {
        for (func = ed->priv.server->ode_func; func->next; func = func->next);
        func->next = newfunc;
    }
    return newfunc;
}
#endif
 
// void(entity e, float physics_enabled) physics_enable = #;
void VM_physics_enable(prvm_prog_t *prog)
{
#ifdef USEODE
    prvm_edict_t *ed;
    edict_odefunc_t f;
#endif
    VM_SAFEPARMCOUNT(2, VM_physics_enable);
#ifdef USEODE
    ed = PRVM_G_EDICT(OFS_PARM0);
    if (!ed)
    {
        if (developer.integer > 0)
            VM_Warning(prog, "VM_physics_enable: null entity!\n");
        return;
    }
    // entity should have MOVETYPE_PHYSICS already set, this can damage memory (making leaked allocation) so warn about this even if non-developer
    if (PRVM_serveredictfloat(ed, movetype) != MOVETYPE_PHYSICS)
    {
        VM_Warning(prog, "VM_physics_enable: entity is not MOVETYPE_PHYSICS!\n");
        return;
    }
    f.type = PRVM_G_FLOAT(OFS_PARM1) == 0 ? ODEFUNC_DISABLE : ODEFUNC_ENABLE;
    VM_physics_ApplyCmd(ed, &f);
#endif
}
 
// void(entity e, vector force, vector relative_ofs) physics_addforce = #;
void VM_physics_addforce(prvm_prog_t *prog)
{
#ifdef USEODE
    prvm_edict_t *ed;
    edict_odefunc_t f;
#endif
    VM_SAFEPARMCOUNT(3, VM_physics_addforce);
#ifdef USEODE
    ed = PRVM_G_EDICT(OFS_PARM0);
    if (!ed)
    {
        if (developer.integer > 0)
            VM_Warning(prog, "VM_physics_addforce: null entity!\n");
        return;
    }
    // entity should have MOVETYPE_PHYSICS already set, this can damage memory (making leaked allocation) so warn about this even if non-developer
    if (PRVM_serveredictfloat(ed, movetype) != MOVETYPE_PHYSICS)
    {
        VM_Warning(prog, "VM_physics_addforce: entity is not MOVETYPE_PHYSICS!\n");
        return;
    }
    f.type = ODEFUNC_FORCE;
    VectorCopy(PRVM_G_VECTOR(OFS_PARM1), f.v1);
    VectorCopy(PRVM_G_VECTOR(OFS_PARM2), f.v2);
    VM_physics_ApplyCmd(ed, &f);
#endif
}
 
// void(entity e, vector torque) physics_addtorque = #;
void VM_physics_addtorque(prvm_prog_t *prog)
{
#ifdef USEODE
    prvm_edict_t *ed;
    edict_odefunc_t f;
#endif
    VM_SAFEPARMCOUNT(2, VM_physics_addtorque);
#ifdef USEODE
    ed = PRVM_G_EDICT(OFS_PARM0);
    if (!ed)
    {
        if (developer.integer > 0)
            VM_Warning(prog, "VM_physics_addtorque: null entity!\n");
        return;
    }
    // entity should have MOVETYPE_PHYSICS already set, this can damage memory (making leaked allocation) so warn about this even if non-developer
    if (PRVM_serveredictfloat(ed, movetype) != MOVETYPE_PHYSICS)
    {
        VM_Warning(prog, "VM_physics_addtorque: entity is not MOVETYPE_PHYSICS!\n");
        return;
    }
    f.type = ODEFUNC_TORQUE;
    VectorCopy(PRVM_G_VECTOR(OFS_PARM1), f.v1);
    VM_physics_ApplyCmd(ed, &f);
#endif
}
 
extern cvar_t prvm_coverage;
void VM_coverage(prvm_prog_t *prog)
{
    VM_SAFEPARMCOUNT(0, VM_coverage);
    if (prog->explicit_profile[prog->xstatement]++ == 0 && (prvm_coverage.integer & 2))
        PRVM_ExplicitCoverageEvent(prog, prog->xfunction, prog->xstatement);
}