//file for builtin implementations relevent to all VMs.

#include "quakedef.h"

#if !defined(CLIENTONLY) || defined(CSQC_DAT) || defined(MENU_DAT)

#include "pr_common.h"

#include <ctype.h>

#define VMUTF8 0
#define VMUTF8MARKUP false


static char *cvargroup_progs = "Progs variables";

cvar_t sv_gameplayfix_blowupfallenzombies = CVARD("sv_gameplayfix_blowupfallenzombies", "0", "Allow findradius to find non-solid entities. This may break certain mods.");
cvar_t pr_droptofloorunits = CVARD("pr_droptofloorunits", "256", "Distance that droptofloor is allowed to drop to be considered successul.");
cvar_t pr_brokenfloatconvert = CVAR("pr_brokenfloatconvert", "0");
cvar_t pr_tempstringcount = CVARD("pr_tempstringcount", "", "Obsolete. Set to 16 if you want to recycle+reuse the same 16 tempstring references and break lots of mods.");
cvar_t pr_tempstringsize = CVARD("pr_tempstringsize", "4096", "Obsolete");
cvar_t	pr_sourcedir = CVARD("pr_sourcedir", "src", "Subdirectory where your qc source is located. Used by the internal compiler and qc debugging functionality.");
cvar_t pr_enable_uriget = CVARD("pr_enable_uriget", "1", "Allows gamecode to make direct http requests");
cvar_t pr_enable_profiling = CVARD("pr_enable_profiling", "0", "Enables profiling support. Will run more slowly. Change the map and then use the profile_ssqc/profile_csqc commands to see the results.");
int tokenizeqc(const char *str, qboolean dpfuckage);

void PF_buf_shutdown(pubprogfuncs_t *prinst);

void skel_info_f(void);
void skel_generateragdoll_f(void);
void PF_Common_RegisterCvars(void)
{
	volatile union
	{
		int i;
		float f;
	} a, b;
	a.i = 1;
	b.i = 1;
	if (!(a.f && b.f))
		Con_Printf(CON_WARNING "WARNING: denormalised floats are disabled. Mods may malfunction\n");


	Cvar_Register (&sv_gameplayfix_blowupfallenzombies, cvargroup_progs);
	Cvar_Register (&pr_droptofloorunits, cvargroup_progs);
	Cvar_Register (&pr_brokenfloatconvert, cvargroup_progs);
	Cvar_Register (&pr_tempstringcount, cvargroup_progs);
	Cvar_Register (&pr_tempstringsize, cvargroup_progs);
#ifdef WEBCLIENT
	Cvar_Register (&pr_enable_uriget, cvargroup_progs);
#endif
	Cvar_Register (&pr_enable_profiling, cvargroup_progs);
	Cvar_Register (&pr_sourcedir, cvargroup_progs);

#ifdef RAGDOLL
	Cmd_AddCommand("skel_info", skel_info_f);
	Cmd_AddCommand("skel_generateragdoll", skel_generateragdoll_f);
#endif

	WPhys_Init();
}

//just prints out a warning with stack trace. so I can throttle spammy stack traces.
static void PF_Warningf(pubprogfuncs_t *prinst, const char *fmt, ...)
{
	va_list		argptr;
	char		string[1024];

	va_start (argptr, fmt);
	vsnprintf (string, sizeof(string)-1, fmt, argptr);
	va_end (argptr);

	if (developer.ival)
		PR_StackTrace(prinst, false);
	Con_Printf("%s", string);
}

char *PF_VarString (pubprogfuncs_t *prinst, int	first, struct globalvars_s *pr_globals)
{
#define VARSTRINGLEN 16384+8
	int		i;
	static char buffer[2][VARSTRINGLEN];
	static int bufnum;
	const char *s;
	char *out;

	out = buffer[(bufnum++)&1];

	out[0] = 0;
	for (i=first ; i<prinst->callargc ; i++)
	{
//		if (G_INT(OFS_PARM0+i*3) < 0 || G_INT(OFS_PARM0+i*3) >= 1024*1024);
//			break;

		s = PR_GetStringOfs(prinst, OFS_PARM0+i*3);
		if (s)
		{
			if (strlen(out)+strlen(s)+1 >= VARSTRINGLEN)
				Con_DPrintf("VarString (builtin call ending with strings) exceeded maximum string length of %i chars", VARSTRINGLEN);

			Q_strncatz (out, s, VARSTRINGLEN);
		}
	}
	return out;
}

static int debuggerresume;
static int debuggerresumeline;
extern int isPlugin;	//if 2, we were invoked by a debugger, and we need to give it debug locations (and it'll feed us continue/steps/breakpoints)
#ifndef SERVERONLY
static int debuggerstacky;
#endif

#if defined(_WIN32) && !defined(FTE_SDL) && !defined(_XBOX)
	#include <windows.h>
	void INS_UpdateGrabs(int fullscreen, int activeapp);
#endif

int QCLibEditor(pubprogfuncs_t *prinst, const char *filename, int *line, int *statement, char *error, pbool fatal);
void QCLoadBreakpoints(const char *vmname, const char *progsname)
{	//this asks the gui to reapply any active breakpoints and waits for them so that any spawn functions can be breakpointed properly.
#if defined(_WIN32) && !defined(FTE_SDL) && !defined(_XBOX)
	extern int				isPlugin;
	if (isPlugin >= 2)
	{
#ifdef SERVERONLY
		SV_GetConsoleCommands();
#else
		Sys_SendKeyEvents();
#endif
		debuggerresume = -1;
		printf("qcreloaded \"%s\" \"%s\"\n", vmname, progsname);
		fflush(stdout);
#ifndef SERVERONLY
		INS_UpdateGrabs(false, false);
#endif
		while(debuggerresume == -1 && !wantquit)
		{
			Sleep(10);
#ifdef SERVERONLY
			SV_GetConsoleCommands();
#else
			Sys_SendKeyEvents();
#endif
		}
	}
#endif
}
extern cvar_t pr_sourcedir;
pubprogfuncs_t *debuggerinstance;
const char *debuggerfile;
size_t debuggerwnd;

qboolean QCExternalDebuggerCommand(char *text)
{
#if defined(CSQC_DAT) && !defined(SERVERONLY)
	extern world_t csqc_world;
#endif
#if defined(MENU_DAT) && !defined(SERVERONLY)
	extern world_t menu_world;
#endif

	if (!isPlugin)
		return false;
	if ((!strncmp(text, "qcstep", 6) && (text[6] == 0 || text[6] == ' ')) || (!strncmp(text, "qcresume", 8) && (text[8] == 0 || text[8] == ' ')))
	{
//		int l;
		if (text[2] == 's')
		{
			text += 6;
			while(*text==' ' || *text=='\t')
				text++;
			if (!strncmp(text, "out", 3))
				debuggerresume = DEBUG_TRACE_OUT;
			else if (!strncmp(text, "over", 3))
				debuggerresume = DEBUG_TRACE_OVER;
			else
				debuggerresume = DEBUG_TRACE_INTO;
//			l = atoi(text+7);
		}
		else
		{
//			l = atoi(text+9);
			debuggerresume = DEBUG_TRACE_OFF;
		}
//		if (l)
//			debuggerresumeline = l;
	}
	else if (!strncmp(text, "qcjump ", 7))
	{
		char file[MAX_QPATH];
		char linebuf[32];
		text += 7;
		text = COM_ParseOut(text, file, sizeof(file));
		text = COM_ParseOut(text, linebuf, sizeof(linebuf));

		if (debuggerinstance && debuggerfile && !Q_strcasecmp(file, debuggerfile))
		{
			debuggerresumeline = atoi(linebuf);
			debuggerresume = DEBUG_TRACE_NORESUME;	//'resume' from the debugger only to break again, so we know the new line number (if they tried setting the line to a blank one)
		}
	}
	else if (!strncmp(text, "debuggerwnd ", 11))
	{
		//send focus to this window when debugging
		debuggerwnd = strtoul(text+12, NULL, 0);
	}
	else if (!strncmp(text, "qcinspect ", 10))
	{
		//called on mouse-over events in the gui
		char *variable;
//		char *function;
		char resultbuffer[8192], tmpbuffer[8192];
		char *vmnames[4] = {"cur: ", "ssqc: ", "csqc: ", "menu: "};
		char *values[4] = {NULL, NULL, NULL, NULL};
		int i;
		Cmd_TokenizeString(text, false, false);
		variable = Cmd_Argv(1);
//		function = Cmd_Argv(2);

		
		//togglebreakpoint just finds the first statement (via the function table for file names) with the specified line number, and sets some unused high bit that causes it to be an invalid opcode.
		if (debuggerinstance)
		{
			if (debuggerinstance->EvaluateDebugString)
				values[0] = debuggerinstance->EvaluateDebugString(debuggerinstance, variable);
		}
		else
		{
#ifndef CLIENTONLY
			if (sv.world.progs && sv.world.progs->EvaluateDebugString)
				values[1] = sv.world.progs->EvaluateDebugString(sv.world.progs, variable);
#endif
#ifndef SERVERONLY
#ifdef CSQC_DAT
			if (csqc_world.progs && csqc_world.progs->EvaluateDebugString)
				values[2] = csqc_world.progs->EvaluateDebugString(csqc_world.progs, variable);
#endif
#ifdef MENU_DAT
			if (menu_world.progs && menu_world.progs->EvaluateDebugString)
				values[3] = menu_world.progs->EvaluateDebugString(menu_world.progs, variable);
#endif
#endif
		}

		for (i = 0, *resultbuffer = 0; i < 4; i++)
		{
			if (!values[i])
				continue;
			if (!strcmp(values[i], "(unable to evaluate)"))
				continue;
			if (*resultbuffer || !debuggerinstance)
				Q_strncatz(resultbuffer, "\n", sizeof(resultbuffer));
			if (!debuggerinstance)
			{
				Q_strncatz(resultbuffer, vmnames[i], sizeof(resultbuffer));
			}
			Q_strncatz(resultbuffer, COM_QuotedString(values[i], tmpbuffer, sizeof(tmpbuffer), true), sizeof(resultbuffer));
		}

		printf("qcvalue \"%s\" %s\n", variable, COM_QuotedString(resultbuffer, tmpbuffer, sizeof(tmpbuffer), false));
		fflush(stdout);
	}
	else if (!strncmp(text, "qcreload", 8))
	{
#if defined(MENU_DAT) && !defined(SERVERONLY)
		Cbuf_AddText("menu_restart\n", RESTRICT_LOCAL);
#endif
#ifndef CLIENTONLY
		if (sv.state)
			Cbuf_AddText("restart\n", RESTRICT_LOCAL);
#endif
//		Host_EndGame("Reloading QC");
		debuggerresume = DEBUG_TRACE_ABORT;
	}
	else if (!strncmp(text, "qcbreakpoint ", 13))
	{
		int mode;
		char *filename;
		int line;
		Cmd_TokenizeString(text, false, false);
		mode = strtoul(Cmd_Argv(1), NULL, 0);
		filename = Cmd_Argv(2);
		line = strtoul(Cmd_Argv(3), NULL, 0);
		//togglebreakpoint just finds the first statement (via the function table for file names) with the specified line number, and sets some unused high bit that causes it to be an invalid opcode.
#ifndef SERVERONLY
#ifdef CSQC_DAT
		if (csqc_world.progs && csqc_world.progs->ToggleBreak)
			csqc_world.progs->ToggleBreak(csqc_world.progs, filename, line, mode);
#endif
#ifdef MENU_DAT
		if (menu_world.progs && menu_world.progs->ToggleBreak)
			menu_world.progs->ToggleBreak(menu_world.progs, filename, line, mode);
#endif
#endif
#ifndef CLIENTONLY
		if (sv.world.progs && sv.world.progs->ToggleBreak)
			sv.world.progs->ToggleBreak(sv.world.progs, filename, line, mode);
#endif
	}
	else
		return false;
	return true;
}

int QDECL QCEditor (pubprogfuncs_t *prinst, const char *filename, int *line, int *statement, char *reason, pbool fatal)
{
#if defined(_WIN32) && !defined(FTE_SDL) && !defined(_XBOX)
	if (isPlugin >= 2)
	{
		if (wantquit)
			return DEBUG_TRACE_ABORT;
		if (!*filename || !line || !*line)	//don't try editing an empty line, it won't work
		{
			Con_Printf("Unable to debug, please disable optimisations\n");
			if (fatal)
				return DEBUG_TRACE_ABORT;
			return DEBUG_TRACE_OFF;
		}
#ifdef SERVERONLY
		SV_GetConsoleCommands();
#else
		Sys_SendKeyEvents();
#endif
		debuggerresume = -1;
		debuggerresumeline = *line;
		if (debuggerwnd)
			SetForegroundWindow((HWND)debuggerwnd);
		if (reason)
		{
			char tmpbuffer[8192];
			printf("qcfault \"%s\":%i %s\n", filename, *line, COM_QuotedString(reason, tmpbuffer, sizeof(tmpbuffer), false));
		}
		else
			printf("qcstep \"%s\":%i\n", filename, *line);
		fflush(stdout);
		debuggerinstance = prinst;
		debuggerfile = filename;
#ifdef SERVERONLY
		if (reason)
		{
			printf("Debugger triggered at \"%s\":%i, %s\n", filename, *line, reason);
			PR_StackTrace(prinst, 1);
		}
		while(debuggerresume == -1 && !wantquit)
		{
			Sleep(10);
			SV_GetConsoleCommands();
		}
#else
		INS_UpdateGrabs(false, false);
		if (reason)
			Con_Footerf(NULL, false, "^bDebugging: %s", reason);
		else
			Con_Footerf(NULL, false, "^bDebugging");
		while(debuggerresume == -1 && !wantquit)
		{
			Sleep(10);
			Sys_SendKeyEvents();

			if (qrenderer)
			{
				//FIXME: display a stack trace and locals instead
				R2D_ImageColours(0.1, 0, 0, 1);
				R2D_FillBlock(0, 0, vid.width, vid.height);
				Con_DrawConsole(vid.height/2, true);	//draw console at half-height
				debuggerstacky = vid.height/2;
				if (debuggerstacky)
					PR_StackTrace(prinst, 2);
				debuggerstacky = 0;
				if (R2D_Flush)
					R2D_Flush();
				VID_SwapBuffers();
			}
		}
		Con_Footerf(NULL, false, "");
#endif
		*line = debuggerresumeline;
		debuggerinstance = NULL;
		debuggerfile = NULL;
		if (wantquit)
			return DEBUG_TRACE_ABORT;
		return debuggerresume;
	}
#endif

#ifdef TEXTEDITOR
	return QCLibEditor(prinst, filename, line, statement, reason, fatal);
#else
	if (fatal)
		return DEBUG_TRACE_ABORT;
	return DEBUG_TRACE_OFF;	//get lost
	{
		int i;
		char buffer[8192];
		char *r;
		vfsfile_t *f;

#ifndef CLIENTONLY
		SV_EndRedirect();
#endif
		if (developer.value && line)
		{
			f = FS_OpenVFS(filename, "rb", FS_GAME);
		}
		else
			f = NULL;	//faster.
		if (!f)
		{
			Q_snprintfz(buffer, sizeof(buffer), "%s/%s", pr_sourcedir.string, filename);
			f = FS_OpenVFS(buffer, "rb", FS_GAME);
		}
		if (!f)
		{
			if (reason)
				Con_Printf("-%s - %i: %s\n", filename, line?*line:*statement, reason);
			else
				Con_Printf("-%s - %i\n", filename, line?*line:*statement);
		}
		else
		{
			for (i = 0; i < *line; i++)
			{
				VFS_GETS(f, buffer, sizeof(buffer));
			}
			if ((r = strchr(buffer, '\r')))
			{ r[0] = '\n';r[1]='\0';}
			Con_Printf("-%s", buffer);
			VFS_CLOSE(f);
		}
	}
	if (reason)
		return DEBUG_TRACE_ABORT;
//PF_break(NULL);
	return DEBUG_TRACE_OVER;
#endif
}

//tag warnings/errors for easier debugging.
int PR_Print (qboolean dev, const char *msg)
{
	char		file[MAX_OSPATH];
	int			line = -1;
	char		*ls, *ms, *nl;

	while (*msg)
	{
		nl = strchr(msg, '\n');
		if (nl)
			*nl = 0;
		*file = 0;

		/*when we're debugging, stack dumps should appear directly on-screen instead of being shoved on the console*/
#ifndef SERVERONLY
		if (debuggerstacky)
		{
			Draw_FunString(0, debuggerstacky, msg);
			debuggerstacky += 8;
			if (nl)
				msg = nl+1;
			else
				break;
			continue;
		}
#endif

		ls = strchr(msg, ':');
		if (ls)
		{
			ms = strchr(ls+1, ':');
			if (ms)
			{
				*ms = '\0';
				if (!strchr(msg, ' ') && !strchr(msg, '\t') && !strchr(msg, '\r') && (ls - msg) < sizeof(file)-1)
				{
					memcpy(file, msg, ls - msg);
					file[ls-msg] = 0;
					line = strtoul(ls+1, NULL, 0);
				}
				*ms = ':';
			}
		}

		if (dev)
		{
			if (*file)
				Con_DPrintf ("^[%s\\edit\\%s:%i^]", msg, file, line);
			else
				Con_DPrintf ("%s", msg);
		}
		else
		{
			if (*file)
				Con_Printf ("^[%s\\edit\\%s:%i^]", msg, file, line);
			else
				Con_Printf ("%s", msg);
		}

		if (nl)
		{
			if (dev)
				Con_DPrintf ("\n");
			else
				Con_Printf ("\n");
			msg = nl+1;
		}
		else
			break;
	}
	return 0;
}

int PR_Printf (const char *fmt, ...)
{
	va_list		argptr;
	char		msg[1024];

	va_start (argptr,fmt);
	vsnprintf (msg,sizeof(msg), fmt,argptr);
	va_end (argptr);

	return PR_Print(false, msg);
}
int PR_DPrintf (const char *fmt, ...)
{
	va_list		argptr;
	char		msg[1024];

	va_start (argptr,fmt);
	vsnprintf (msg,sizeof(msg), fmt,argptr);
	va_end (argptr);

	return PR_Print(true, msg);
}

#define MAX_TEMPSTRS	((int)pr_tempstringcount.value)
#define MAXTEMPBUFFERLEN	((int)pr_tempstringsize.value)
string_t PR_TempString(pubprogfuncs_t *prinst, const char *str)
{
	char *tmp;
	if (!prinst->tempstringbase)
		return prinst->TempString(prinst, str);

	if (!str || !*str)
		return 0;

	if (prinst->tempstringnum == MAX_TEMPSTRS)
		prinst->tempstringnum = 0;
	tmp = prinst->tempstringbase + (prinst->tempstringnum++)*MAXTEMPBUFFERLEN;

	Q_strncpyz(tmp, str, MAXTEMPBUFFERLEN);
	return tmp - prinst->stringtable;
}

void PF_InitTempStrings(pubprogfuncs_t *prinst)
{
	if (pr_tempstringcount.value > 0 && pr_tempstringcount.value < 2)
		pr_tempstringcount.value = 2;
	if (pr_tempstringsize.value < 256)
		pr_tempstringsize.value = 256;
	pr_tempstringcount.flags |= CVAR_NOSET;
	pr_tempstringsize.flags |= CVAR_NOSET;

	if (pr_tempstringcount.value >= 2)
		prinst->tempstringbase = prinst->AddString(prinst, "", MAXTEMPBUFFERLEN*MAX_TEMPSTRS, false);
	else
		prinst->tempstringbase = 0;
	prinst->tempstringnum = 0;
}

//#define	RETURN_EDICT(pf, e) (((int *)pr_globals)[OFS_RETURN] = EDICT_TO_PROG(pf, e))
#define	RETURN_SSTRING(s) (((int *)pr_globals)[OFS_RETURN] = PR_SetString(prinst, s))	//static - exe will not change it.
#define	RETURN_TSTRING(s) (((int *)pr_globals)[OFS_RETURN] = PR_TempString(prinst, s))	//temp (static but cycle buffers)
#define	RETURN_CSTRING(s) (((int *)pr_globals)[OFS_RETURN] = PR_SetString(prinst, s))	//semi-permanant. (hash tables?)
#define	RETURN_PSTRING(s) (((int *)pr_globals)[OFS_RETURN] = PR_NewString(prinst, s, 0))	//permanant



void VARGS PR_BIError(pubprogfuncs_t *progfuncs, char *format, ...)
{
	va_list		argptr;
	static char		string[2048];

	va_start (argptr, format);
	vsnprintf (string,sizeof(string)-1, format,argptr);
	va_end (argptr);

	if (developer.value || !progfuncs)
	{
		struct globalvars_s *pr_globals = PR_globals(progfuncs, PR_CURRENT);
		PR_RunWarning(progfuncs, "%s\n", string);
		G_INT(OFS_RETURN)=0;	//just in case it was a float and should be an ent...
		G_INT(OFS_RETURN+1)=0;
		G_INT(OFS_RETURN+2)=0;
	}
	else
	{
		PR_StackTrace(progfuncs, false);
//		PR_AbortStack(progfuncs);
		progfuncs->parms->Abort ("%s", string);
	}
}


pbool QDECL QC_WriteFile(const char *name, void *data, int len)
{
	char buffer[256];
	Q_snprintfz(buffer, sizeof(buffer), "%s", name);
	COM_WriteFile(buffer, FS_GAMEONLY, data, len);
	return true;
}

//a little loop so we can keep track of used mem
void *VARGS PR_CB_Malloc(int size)
{
	return BZ_Malloc(size);//Z_TagMalloc (size, 100);
}
void VARGS PR_CB_Free(void *mem)
{
	BZ_Free(mem);
}


////////////////////////////////////////////////////
//model functions
//DP_QC_GETSURFACE
static void PF_BuildSurfaceMesh(model_t *model, unsigned int surfnum)
{
	//this function might be called on dedicated servers.
#ifdef Q1BSPS
	void ModQ1_Batches_BuildQ1Q2Poly(model_t *mod, msurface_t *surf, builddata_t *cookie);
	if (model->fromgame == fg_quake || model->fromgame == fg_halflife)
		ModQ1_Batches_BuildQ1Q2Poly(model, &model->surfaces[surfnum], NULL);
#endif
	//fixme: q3...
}
// #434 float(entity e, float s) getsurfacenumpoints (DP_QC_GETSURFACE)
void QCBUILTIN PF_getsurfacenumpoints(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int surfnum;
	model_t *model;
	wedict_t *ent;
	world_t *w = prinst->parms->user;

	ent = G_WEDICT(prinst, OFS_PARM0);
	surfnum = G_FLOAT(OFS_PARM1);

	model = w->Get_CModel(w, ent->v->modelindex);

	if (!model || model->type != mod_brush || surfnum >= model->nummodelsurfaces)
		G_FLOAT(OFS_RETURN) = 0;
	else
	{
		surfnum += model->firstmodelsurface;
		if (!model->surfaces[surfnum].mesh)
			PF_BuildSurfaceMesh(model, surfnum);
		if (model->surfaces[surfnum].mesh)
			G_FLOAT(OFS_RETURN) = model->surfaces[surfnum].mesh->numvertexes;
		else
			G_FLOAT(OFS_RETURN) = 0;	//not loaded properly.
	}
}
// #435 vector(entity e, float s, float n) getsurfacepoint (DP_QC_GETSURFACE)
void QCBUILTIN PF_getsurfacepoint(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int surfnum, pointnum;
	model_t *model;
	wedict_t *ent;
	world_t *w = prinst->parms->user;

	ent = G_WEDICT(prinst, OFS_PARM0);
	surfnum = G_FLOAT(OFS_PARM1);
	pointnum = G_FLOAT(OFS_PARM2);

	model = w->Get_CModel(w, ent->v->modelindex);

	if (!model || model->type != mod_brush || surfnum >= model->nummodelsurfaces)
	{
		G_FLOAT(OFS_RETURN+0) = 0;
		G_FLOAT(OFS_RETURN+1) = 0;
		G_FLOAT(OFS_RETURN+2) = 0;
	}
	else
	{
		surfnum += model->firstmodelsurface;

		G_FLOAT(OFS_RETURN+0) = model->surfaces[surfnum].mesh->xyz_array[pointnum][0];
		G_FLOAT(OFS_RETURN+1) = model->surfaces[surfnum].mesh->xyz_array[pointnum][1];
		G_FLOAT(OFS_RETURN+2) = model->surfaces[surfnum].mesh->xyz_array[pointnum][2];
	}
}
// #436 vector(entity e, float s) getsurfacenormal (DP_QC_GETSURFACE)
void QCBUILTIN PF_getsurfacenormal(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int surfnum;
	model_t *model;
	wedict_t *ent;
	world_t *w = prinst->parms->user;

	ent = G_WEDICT(prinst, OFS_PARM0);
	surfnum = G_FLOAT(OFS_PARM1);

	model = w->Get_CModel(w, ent->v->modelindex);

	if (!model || model->type != mod_brush || surfnum >= model->nummodelsurfaces)
	{
		G_FLOAT(OFS_RETURN+0) = 0;
		G_FLOAT(OFS_RETURN+1) = 0;
		G_FLOAT(OFS_RETURN+2) = 0;
	}
	else
	{
		surfnum += model->firstmodelsurface;

		G_FLOAT(OFS_RETURN+0) = model->surfaces[surfnum].plane->normal[0];
		G_FLOAT(OFS_RETURN+1) = model->surfaces[surfnum].plane->normal[1];
		G_FLOAT(OFS_RETURN+2) = model->surfaces[surfnum].plane->normal[2];
		if (model->surfaces[surfnum].flags & SURF_PLANEBACK)
			VectorInverse(G_VECTOR(OFS_RETURN));
	}
}
// #437 string(entity e, float s) getsurfacetexture (DP_QC_GETSURFACE)
void QCBUILTIN PF_getsurfacetexture(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	model_t *model;
	wedict_t *ent;
	msurface_t *surf;
	int surfnum;
	world_t *w = prinst->parms->user;

	ent = G_WEDICT(prinst, OFS_PARM0);
	surfnum = G_FLOAT(OFS_PARM1);

	model = w->Get_CModel(w, ent->v->modelindex);

	G_INT(OFS_RETURN) = 0;
	if (!model || model->type != mod_brush)
		return;

	if (surfnum < 0 || surfnum >= model->nummodelsurfaces)
		return;
	surfnum += model->firstmodelsurface;
	surf = &model->surfaces[surfnum];
	G_INT(OFS_RETURN) = PR_TempString(prinst, surf->texinfo->texture->name);
}
#define TriangleNormal(a,b,c,n) ( \
	(n)[0] = ((a)[1] - (b)[1]) * ((c)[2] - (b)[2]) - ((a)[2] - (b)[2]) * ((c)[1] - (b)[1]), \
	(n)[1] = ((a)[2] - (b)[2]) * ((c)[0] - (b)[0]) - ((a)[0] - (b)[0]) * ((c)[2] - (b)[2]), \
	(n)[2] = ((a)[0] - (b)[0]) * ((c)[1] - (b)[1]) - ((a)[1] - (b)[1]) * ((c)[0] - (b)[0]) \
	)
static float getsurface_clippointpoly(model_t *model, msurface_t *surf, vec3_t point, vec3_t bestcpoint, float bestdist)
{
	int e, edge;
	vec3_t edgedir, edgenormal, cpoint, temp;
	mvertex_t *v1, *v2;
	float dist = DotProduct(point, surf->plane->normal) - surf->plane->dist;
	//don't care about SURF_PLANEBACK, the maths works out the same.

	if (dist*dist < bestdist)
	{	//within a specific range
		//make sure it's within the poly
		VectorMA(point, dist, surf->plane->normal, cpoint);
		for (e = surf->firstedge+surf->numedges; e > surf->firstedge; edge++)
		{
			edge = model->surfedges[--e];
			if (edge < 0)
			{
				v1 = &model->vertexes[model->edges[-edge].v[0]];
				v2 = &model->vertexes[model->edges[-edge].v[1]];
			}
			else
			{
				v2 = &model->vertexes[model->edges[edge].v[0]];
				v1 = &model->vertexes[model->edges[edge].v[1]];
			}
			
			VectorSubtract(v1->position, v2->position, edgedir);
			CrossProduct(edgedir, surf->plane->normal, edgenormal);
			if (!(surf->flags & SURF_PLANEBACK))
			{
				VectorNegate(edgenormal, edgenormal);
			}
			VectorNormalize(edgenormal);

			dist = DotProduct(v1->position, edgenormal) - DotProduct(cpoint, edgenormal);
			if (dist < 0)
				VectorMA(cpoint, dist, edgenormal, cpoint);
		}

		VectorSubtract(cpoint, point, temp);
		dist = DotProduct(temp, temp);
		if (dist < bestdist)
		{
			bestdist = dist;
			VectorCopy(cpoint, bestcpoint);
		}
	}
	return bestdist;
}
static float getsurface_clippointtri(model_t *model, msurface_t *surf, vec3_t point, vec3_t bestcpoint, float bestdist)
{
	int j;
	mesh_t *mesh = surf->mesh;
	vec3_t trinorm, edgedir, edgenormal, temp, cpoint;
	float dist;
	int e;
	float *v1, *v2;
	if (!mesh)
	{
		PF_BuildSurfaceMesh(model, surf - model->surfaces);
		mesh = surf->mesh;
		if (!mesh)
			return 0;
	}
	for (j = 0; j < mesh->numindexes; j+=3)
	{
		//calculate the distance from the plane
		TriangleNormal(mesh->xyz_array[mesh->indexes[j+2]], mesh->xyz_array[mesh->indexes[j+1]], mesh->xyz_array[mesh->indexes[j+0]], trinorm);
		if (!trinorm[0] && !trinorm[1] && !trinorm[2])
			continue;
		VectorNormalize(trinorm);
		dist = DotProduct(point, trinorm) - DotProduct(mesh->xyz_array[mesh->indexes[j+0]], trinorm);
		if (dist*dist < bestdist)
		{
			//set cpoint to be the point on the plane
			VectorMA(point, -dist, trinorm, cpoint);

			//clip to each edge of the triangle
			for (e = 0; e < 3; e++)
			{
				v1 = mesh->xyz_array[mesh->indexes[j+e]];
				v2 = mesh->xyz_array[mesh->indexes[j+((e+1)%3)]];

				VectorSubtract(v1, v2, edgedir);
				CrossProduct(edgedir, trinorm, edgenormal);
				VectorNormalize(edgenormal);

				dist = DotProduct(cpoint, edgenormal) - DotProduct(v1, edgenormal);
				if (dist < 0)
					VectorMA(cpoint, -dist, edgenormal, cpoint);
			}

			//if the point is closer, we win.
			VectorSubtract(cpoint, point, temp);
			dist = DotProduct(temp, temp);
			if (dist < bestdist)
			{
				bestdist = dist;
				VectorCopy(cpoint, bestcpoint);
			}
		}
	}
	return bestdist;
}
// #438 float(entity e, vector p) getsurfacenearpoint (DP_QC_GETSURFACE)
void QCBUILTIN PF_getsurfacenearpoint(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	model_t *model;
	wedict_t *ent;
	msurface_t *surf;
	int i;
	float *point;

	vec3_t cpoint = {0,0,0};
	float bestdist = 0x7fffffff, dist;
	int bestsurf = -1;
	world_t *w = prinst->parms->user;

	ent = G_WEDICT(prinst, OFS_PARM0);
	point = G_VECTOR(OFS_PARM1);

	G_FLOAT(OFS_RETURN) = -1;

	model = w->Get_CModel(w, ent->v->modelindex);

	if (!model || model->type != mod_brush)
		return;

	bestdist = 256;

	if (model->fromgame == fg_quake || model->fromgame == fg_quake2)
	{
		//all polies, we can skip parts. special case.
		surf = model->surfaces + model->firstmodelsurface;
		for (i = 0; i < model->nummodelsurfaces; i++, surf++)
		{
			dist = getsurface_clippointpoly(model, surf, point, cpoint, bestdist);
			if (dist < bestdist)
			{
				bestdist = dist;
				bestsurf = i;
			}
		}
	}
	else
	{
		//if performance is needed, I suppose we could try walking bsp nodes a bit
		surf = model->surfaces + model->firstmodelsurface;
		for (i = 0; i < model->nummodelsurfaces; i++, surf++)
		{
			dist = getsurface_clippointtri(model, surf, point, cpoint, bestdist);
			if (dist < bestdist)
			{
				bestdist = dist;
				bestsurf = i;
			}
		}
	}
	G_FLOAT(OFS_RETURN) = bestsurf;
}

// #439 vector(entity e, float s, vector p) getsurfaceclippedpoint (DP_QC_GETSURFACE)
void QCBUILTIN PF_getsurfaceclippedpoint(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	model_t *model;
	wedict_t *ent;
	msurface_t *surf;
	float *point;
	unsigned int surfnum;

	world_t *w = prinst->parms->user;
	float *result = G_VECTOR(OFS_RETURN);

	ent = G_WEDICT(prinst, OFS_PARM0);
	surfnum = G_FLOAT(OFS_PARM1);
	point = G_VECTOR(OFS_PARM2);

	VectorCopy(point, result);

	model = w->Get_CModel(w, ent->v->modelindex);

	if (!model || model->type != mod_brush)
		return;
	if (surfnum >= model->nummodelsurfaces)
		return;

	if (model->fromgame == fg_quake)
	{
		//all polies, we can skip parts. special case.
		surf = model->surfaces + model->firstmodelsurface + surfnum;
		getsurface_clippointpoly(model, surf, point, result, 0x7fffffff);
	}
	else
	{
		//if performance is needed, I suppose we could try walking bsp nodes a bit
		surf = model->surfaces + model->firstmodelsurface + surfnum;
		getsurface_clippointtri(model, surf, point, result, 0x7fffffff);
	}
}

// #628 float(entity e, float s) getsurfacenumtriangles
void QCBUILTIN PF_getsurfacenumtriangles(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int surfnum;
	model_t *model;
	wedict_t *ent;
	world_t *w = prinst->parms->user;

	ent = G_WEDICT(prinst, OFS_PARM0);
	surfnum = G_FLOAT(OFS_PARM1);

	model = w->Get_CModel(w, ent->v->modelindex);

	if (!model || model->type != mod_brush || surfnum >= model->nummodelsurfaces)
	{
		G_FLOAT(OFS_RETURN) = 0;
	}
	else
	{
		surfnum += model->firstmodelsurface;
		if (!model->surfaces[surfnum].mesh)
			PF_BuildSurfaceMesh(model, surfnum);
		if (model->surfaces[surfnum].mesh)
			G_FLOAT(OFS_RETURN) = model->surfaces[surfnum].mesh->numindexes/3;
		else
			G_FLOAT(OFS_RETURN) = 0;
	}
}
// #629 float(entity e, float s) getsurfacetriangle
void QCBUILTIN PF_getsurfacetriangle(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int surfnum, firstidx;
	model_t *model;
	wedict_t *ent;
	world_t *w = prinst->parms->user;

	ent = G_WEDICT(prinst, OFS_PARM0);
	surfnum = G_FLOAT(OFS_PARM1);
	firstidx = G_FLOAT(OFS_PARM2)*3;

	model = w->Get_CModel(w, ent->v->modelindex);

	if (model && model->type == mod_brush && surfnum < model->nummodelsurfaces)
	{
		surfnum += model->firstmodelsurface;

		if (!model->surfaces[surfnum].mesh)
			PF_BuildSurfaceMesh(model, surfnum);
		if (model->surfaces[surfnum].mesh)
		if (firstidx+2 < model->surfaces[surfnum].mesh->numindexes)
		{
			G_FLOAT(OFS_RETURN+0) = model->surfaces[surfnum].mesh->indexes[firstidx+0];
			G_FLOAT(OFS_RETURN+1) = model->surfaces[surfnum].mesh->indexes[firstidx+1];
			G_FLOAT(OFS_RETURN+2) = model->surfaces[surfnum].mesh->indexes[firstidx+2];
			return;
		}
	}

	G_FLOAT(OFS_RETURN+0) = 0;
	G_FLOAT(OFS_RETURN+1) = 0;
	G_FLOAT(OFS_RETURN+2) = 0;
}

//vector(entity e, float s, float n, float a) getsurfacepointattribute
void QCBUILTIN PF_getsurfacepointattribute(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	wedict_t *ent = G_WEDICT(prinst, OFS_PARM0);
	unsigned int surfnum = G_FLOAT(OFS_PARM1);
	unsigned int pointnum = G_FLOAT(OFS_PARM2);
	unsigned int attribute = G_FLOAT(OFS_PARM3);
	world_t *w = prinst->parms->user;
	model_t *model = w->Get_CModel(w, ent->v->modelindex);
	G_FLOAT(OFS_RETURN+0) = 0;
	G_FLOAT(OFS_RETURN+1) = 0;
	G_FLOAT(OFS_RETURN+2) = 0;
	if (model && model->type == mod_brush && surfnum < model->nummodelsurfaces)
	{
		surfnum += model->firstmodelsurface;
		if (!model->surfaces[surfnum].mesh)
			PF_BuildSurfaceMesh(model, surfnum);
		if (model->surfaces[surfnum].mesh)
		if (pointnum < model->surfaces[surfnum].mesh->numvertexes)
		{
			switch(attribute)
			{
			case 0:
				G_FLOAT(OFS_RETURN+0) = model->surfaces[surfnum].mesh->xyz_array[pointnum][0];
				G_FLOAT(OFS_RETURN+1) = model->surfaces[surfnum].mesh->xyz_array[pointnum][1];
				G_FLOAT(OFS_RETURN+2) = model->surfaces[surfnum].mesh->xyz_array[pointnum][2];
				break;
			case 1:
				G_FLOAT(OFS_RETURN+0) = model->surfaces[surfnum].mesh->snormals_array[pointnum][0];
				G_FLOAT(OFS_RETURN+1) = model->surfaces[surfnum].mesh->snormals_array[pointnum][1];
				G_FLOAT(OFS_RETURN+2) = model->surfaces[surfnum].mesh->snormals_array[pointnum][2];
				break;
			case 2:
				G_FLOAT(OFS_RETURN+0) = model->surfaces[surfnum].mesh->tnormals_array[pointnum][0];
				G_FLOAT(OFS_RETURN+1) = model->surfaces[surfnum].mesh->tnormals_array[pointnum][1];
				G_FLOAT(OFS_RETURN+2) = model->surfaces[surfnum].mesh->tnormals_array[pointnum][2];
				break;
			case 3:
				G_FLOAT(OFS_RETURN+0) = model->surfaces[surfnum].mesh->normals_array[pointnum][0];
				G_FLOAT(OFS_RETURN+1) = model->surfaces[surfnum].mesh->normals_array[pointnum][1];
				G_FLOAT(OFS_RETURN+2) = model->surfaces[surfnum].mesh->normals_array[pointnum][2];
				break;
			case 4:
				G_FLOAT(OFS_RETURN+0) = model->surfaces[surfnum].mesh->st_array[pointnum][0];
				G_FLOAT(OFS_RETURN+1) = model->surfaces[surfnum].mesh->st_array[pointnum][1];
				G_FLOAT(OFS_RETURN+2) = 0;
				break;
			case 5:
				G_FLOAT(OFS_RETURN+0) = model->surfaces[surfnum].mesh->lmst_array[0][pointnum][0];
				G_FLOAT(OFS_RETURN+1) = model->surfaces[surfnum].mesh->lmst_array[0][pointnum][1];
				G_FLOAT(OFS_RETURN+2) = 0;
				break;
			case 6:
				G_FLOAT(OFS_RETURN+0) = model->surfaces[surfnum].mesh->colors4f_array[0][pointnum][0];
				G_FLOAT(OFS_RETURN+1) = model->surfaces[surfnum].mesh->colors4f_array[0][pointnum][1];
				G_FLOAT(OFS_RETURN+2) = model->surfaces[surfnum].mesh->colors4f_array[0][pointnum][2];
				//no way to return alpha here.
				break;
			}
		}
	}
}

qbyte qcpvs[(MAX_MAP_LEAFS+7)/8];
//#240 float(vector viewpos, entity viewee) checkpvs (FTE_QC_CHECKPVS)
//note: this requires a correctly setorigined entity.
void QCBUILTIN PF_checkpvs(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	world_t *world = prinst->parms->user;
	float *viewpos = G_VECTOR(OFS_PARM0);
	wedict_t *ent = G_WEDICT(prinst, OFS_PARM1);

	if (!world->worldmodel || world->worldmodel->loadstate != MLS_LOADED)
		G_FLOAT(OFS_RETURN) = false;
	else if (!world->worldmodel->funcs.FatPVS)
		G_FLOAT(OFS_RETURN) = true;
	else
	{
		//FIXME: Make all alternatives of FatPVS not recalulate the pvs.
		//and yeah, this is overkill what with the whole fat thing and all.
		world->worldmodel->funcs.FatPVS(world->worldmodel, viewpos, qcpvs, sizeof(qcpvs), false);

		G_FLOAT(OFS_RETURN) = world->worldmodel->funcs.EdictInFatPVS(world->worldmodel, &ent->pvsinfo, qcpvs);
	}
}

void QCBUILTIN PF_setattachment(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	wedict_t *e = G_WEDICT(prinst, OFS_PARM0);
	wedict_t *tagentity = G_WEDICT(prinst, OFS_PARM1);
	const char *tagname = PR_GetStringOfs(prinst, OFS_PARM2);
	world_t *world = prinst->parms->user;

	model_t *model;

	int tagidx;

	tagidx = 0;

	if (tagentity != world->edicts && tagname && tagname[0])
	{
		model = world->Get_CModel(world, tagentity->v->modelindex);
		if (model)
		{
			if (model && model->loadstate == MLS_LOADING)
				COM_WorkerPartialSync(model, &model->loadstate, MLS_LOADING);
			tagidx = Mod_TagNumForName(model, tagname);
			if (tagidx == 0)
				Con_DPrintf("setattachment(edict %i, edict %i, string \"%s\"): tried to find tag named \"%s\" on entity %i (model \"%s\") but could not find it\n", NUM_FOR_EDICT(prinst, e), NUM_FOR_EDICT(prinst, tagentity), tagname, tagname, NUM_FOR_EDICT(prinst, tagentity), model->name);
		}
		else
			Con_DPrintf("setattachment(edict %i, edict %i, string \"%s\"): Couldn't load model\n", NUM_FOR_EDICT(prinst, e), NUM_FOR_EDICT(prinst, tagentity), tagname);
	}

	e->xv->tag_entity = EDICT_TO_PROG(prinst, tagentity);
	e->xv->tag_index = tagidx;
}

#ifndef TERRAIN
void QCBUILTIN PF_terrain_edit(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = false;
}
#endif

//end model functions
////////////////////////////////////////////////////

void QCBUILTIN PF_touchtriggers(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	world_t *w = prinst->parms->user;
	wedict_t *ent = ((prinst->callargc>0)?G_WEDICT(prinst, OFS_PARM0):PROG_TO_WEDICT(prinst, *w->g.self));
	if (prinst->callargc > 1)
	{
		if (ent->readonly)
		{
			Con_Printf("setorigin on readonly entity %i\n", ent->entnum);
			return;
		}
		VectorCopy(G_VECTOR(OFS_PARM1), ent->v->origin);
	}
	World_LinkEdict (w, ent, true);
}


////////////////////////////////////////////////////
//Finding

/*
//entity(string field, float match) findchainflags = #450
//chained search for float, int, and entity reference fields
void PF_findchainflags (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int i, f;
	int s;
	edict_t	*ent, *chain;

	chain = (edict_t *) *prinst->parms->sv_edicts;

	f = G_INT(OFS_PARM0)+prinst->fieldadjust;
	s = G_FLOAT(OFS_PARM1);

	for (i = 1; i < *prinst->parms->sv_num_edicts; i++)
	{
		ent = EDICT_NUM(prinst, i);
		if (ent->isfree)
			continue;
		if (!((int)((float *)ent->v)[f] & s))
			continue;

		ent->v->chain = EDICT_TO_PROG(prinst, chain);
		chain = ent;
	}

	RETURN_EDICT(prinst, chain);
}
*/

/*
//entity(string field, float match) findchainfloat = #403
void PF_findchainfloat (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int i, f;
	float s;
	edict_t	*ent, *chain;

	chain = (edict_t *) *prinst->parms->sv_edicts;

	f = G_INT(OFS_PARM0)+prinst->fieldadjust;
	s = G_FLOAT(OFS_PARM1);

	for (i = 1; i < *prinst->parms->sv_num_edicts; i++)
	{
		ent = EDICT_NUM(prinst, i);
		if (ent->isfree)
			continue;
		if (((float *)ent->v)[f] != s)
			continue;

		ent->v->chain = EDICT_TO_PROG(prinst, chain);
		chain = ent;
	}

	RETURN_EDICT(prinst, chain);
}
*/

/*
//entity(string field, string match) findchain = #402
//chained search for strings in entity fields
void PF_findchain (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int i, f;
	char *s;
	string_t t;
	edict_t *ent, *chain;

	chain = (edict_t *) *prinst->parms->sv_edicts;

	f = G_INT(OFS_PARM0)+prinst->fieldadjust;
	s = PR_GetStringOfs(prinst, OFS_PARM1);

	for (i = 1; i < *prinst->parms->sv_num_edicts; i++)
	{
		ent = EDICT_NUM(prinst, i);
		if (ent->isfree)
			continue;
		t = *(string_t *)&((float*)ent->v)[f];
		if (!t)
			continue;
		if (strcmp(PR_GetString(prinst, t), s))
			continue;

		ent->v->chain = EDICT_TO_PROG(prinst, chain);
		chain = ent;
	}

	RETURN_EDICT(prinst, chain);
}
*/

//EXTENSION: DP_QC_FINDFLAGS
//entity(entity start, float fld, float match) findflags = #449
void QCBUILTIN PF_FindFlags (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int e, f;
	int s;
	wedict_t *ed;

	e = G_EDICTNUM(prinst, OFS_PARM0);
	f = G_INT(OFS_PARM1)+prinst->fieldadjust;
	s = G_FLOAT(OFS_PARM2);

	for (e++; e < *prinst->parms->sv_num_edicts; e++)
	{
		ed = WEDICT_NUM(prinst, e);
		if (ED_ISFREE(ed))
			continue;
		if ((int)((float *)ed->v)[f] & s)
		{
			RETURN_EDICT(prinst, ed);
			return;
		}
	}

	RETURN_EDICT(prinst, *prinst->parms->sv_edicts);
}

//entity(entity start, float fld, float match) findfloat = #98
void QCBUILTIN PF_FindFloat (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int e, f;
	int s;
	wedict_t *ed;

	if (prinst->callargc != 3)	//I can hate mvdsv if I want to.
	{
		PR_BIError(prinst, "PF_FindFloat (#98): callargc != 3\nDid you mean to set pr_imitatemvdsv to 1?");
		return;
	}

	e = G_EDICTNUM(prinst, OFS_PARM0);
	f = G_INT(OFS_PARM1)+prinst->fieldadjust;
	s = G_INT(OFS_PARM2);

	for (e++; e < *prinst->parms->sv_num_edicts; e++)
	{
		ed = WEDICT_NUM(prinst, e);
		if (ED_ISFREE(ed))
			continue;
		if (((int *)ed->v)[f] == s)
		{
			RETURN_EDICT(prinst, ed);
			return;
		}
	}

	RETURN_EDICT(prinst, *prinst->parms->sv_edicts);
}

// entity (entity start, .string field, string match) find = #5;
void QCBUILTIN PF_FindString (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int		e;
	int		f;
	const char	*s;
	string_t t;
	wedict_t	*ed;

	e = G_EDICTNUM(prinst, OFS_PARM0);
	f = G_INT(OFS_PARM1)+prinst->fieldadjust;
	s = PR_GetStringOfs(prinst, OFS_PARM2);
	if (!s)
	{
		PR_BIError (prinst, "PF_FindString: bad search string");
		return;
	}

	for (e++ ; e < *prinst->parms->sv_num_edicts ; e++)
	{
		ed = WEDICT_NUM(prinst, e);
		if (ED_ISFREE(ed))
			continue;
		t = ((string_t *)ed->v)[f];
		if (!t)
			continue;
		if (!strcmp(PR_GetString(prinst, t),s))
		{
			RETURN_EDICT(prinst, ed);
			return;
		}
	}

	RETURN_EDICT(prinst, *prinst->parms->sv_edicts);
}

//Finding
////////////////////////////////////////////////////
//Cvars

//string(string cvarname) cvar_string
void QCBUILTIN PF_cvar_string (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char	*str = PR_GetStringOfs(prinst, OFS_PARM0);
	cvar_t *cv = Cvar_Get(str, "", 0, "QC variables");
	if (cv && !(cv->flags & CVAR_NOUNSAFEEXPAND))
	{
		if(cv->latched_string)
			RETURN_CSTRING(cv->latched_string);
		else
			RETURN_CSTRING(cv->string);
	}
	else
		G_INT(OFS_RETURN) = 0;
}

void QCBUILTIN PF_cvars_haveunsaved (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = Cvar_UnsavedArchive();
}

//string(string cvarname) cvar_defstring
void QCBUILTIN PF_cvar_defstring (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char	*str = PR_GetStringOfs(prinst, OFS_PARM0);
	cvar_t *cv = Cvar_Get(str, "", 0, "QC variables");
	if (cv && !(cv->flags & CVAR_NOUNSAFEEXPAND))
		RETURN_CSTRING(cv->defaultstr);
	else
		G_INT(OFS_RETURN) = 0;
}

//string(string cvarname) cvar_description
void QCBUILTIN PF_cvar_description (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char	*str = PR_GetStringOfs(prinst, OFS_PARM0);
	cvar_t *cv = Cvar_Get(str, "", 0, "QC variables");
	if (cv && !(cv->flags & CVAR_NOUNSAFEEXPAND))
		RETURN_CSTRING(cv->description);
	else
		G_INT(OFS_RETURN) = 0;
}

//float(string name) cvar_type
void QCBUILTIN PF_cvar_type (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char	*str = PR_GetStringOfs(prinst, OFS_PARM0);
	int ret = 0;
	cvar_t *v;

	v = Cvar_FindVar(str);
	if (v && !(v->flags & CVAR_NOUNSAFEEXPAND))
	{
		ret |= 1; // CVAR_EXISTS
		if(v->flags & CVAR_ARCHIVE)
			ret |= 2; // CVAR_TYPE_SAVED
		if(v->flags & CVAR_NOTFROMSERVER)
			ret |= 4; // CVAR_TYPE_PRIVATE
		if(!(v->flags & CVAR_USERCREATED))
			ret |= 8; // CVAR_TYPE_ENGINE
		if (v->description)
			ret |= 16; // CVAR_TYPE_HASDESCRIPTION
	}
	G_FLOAT(OFS_RETURN) = ret;
}

//void(string cvarname, string newvalue) cvar
void QCBUILTIN PF_cvar_set (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char	*var_name, *val;
	cvar_t *var;

	var_name = PR_GetStringOfs(prinst, OFS_PARM0);
	val = PR_GetStringOfs(prinst, OFS_PARM1);

	var = Cvar_Get(var_name, val, 0, "QC variables");
	if (!var || (var->flags & CVAR_NOTFROMSERVER))
		return;
	Cvar_Set (var, val);
}

void QCBUILTIN PF_cvar_setlatch (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char	*var_name, *val;
	cvar_t *var;

	var_name = PR_GetStringOfs(prinst, OFS_PARM0);
	val = PR_GetStringOfs(prinst, OFS_PARM1);

	var = Cvar_Get(var_name, val, 0, "QC variables");
	if (!var || (var->flags & CVAR_NOTFROMSERVER))
		return;
	Cvar_LockFromServer(var, val);
}

void QCBUILTIN PF_cvar_setf (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char	*var_name;
	float	val;
	cvar_t *var;

	var_name = PR_GetStringOfs(prinst, OFS_PARM0);
	val = G_FLOAT(OFS_PARM1);

	var = Cvar_FindVar(var_name);
	if (!var || (var->flags & CVAR_NOTFROMSERVER))
		return;
	Cvar_SetValue (var, val);
}

//float(string name, string value) registercvar
void QCBUILTIN PF_registercvar (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *name, *value;
	value = PR_GetStringOfs(prinst, OFS_PARM0);

	if (Cvar_FindVar(value))
		G_FLOAT(OFS_RETURN) = 0;
	else
	{
		name = value;
		if (prinst->callargc > 1)
			value = PR_GetStringOfs(prinst, OFS_PARM1);
		else
			value = "";

	// archive?
		if (Cvar_Get(name, value, CVAR_USERCREATED, "QC created vars"))
			G_FLOAT(OFS_RETURN) = 1;
		else
			G_FLOAT(OFS_RETURN) = 0;
	}
}

//Cvars
////////////////////////////////////////////////////
//memory stuff
void QCBUILTIN PF_memalloc (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int size = G_INT(OFS_PARM0);
	void *ptr;
	if (size <= 0 || size > 0x01000000)
		ptr = NULL;	//don't let them abuse things too much. values that are too large might overflow.
	else
		ptr = prinst->AddressableAlloc(prinst, size);
	if (ptr)
	{
		memset(ptr, 0, size);
		G_INT(OFS_RETURN) = (char*)ptr - prinst->stringtable;
	}
	else
		G_INT(OFS_RETURN) = 0;
}
void QCBUILTIN PF_memfree (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int qcptr = G_INT(OFS_PARM0);
	void *cptr = prinst->stringtable + G_INT(OFS_PARM0);
	if (qcptr)
		prinst->AddressableFree(prinst, cptr);
}
void QCBUILTIN PF_memcpy (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int dst = G_INT(OFS_PARM0);
	int src = G_INT(OFS_PARM1);
	int size = G_INT(OFS_PARM2);
	if (dst < 0 || dst+size >= prinst->stringtablesize)
	{
		PR_BIError(prinst, "PF_memcpy: invalid dest\n");
		return;
	}
	if (src < 0 || src+size >= prinst->stringtablesize)
	{
		PR_BIError(prinst, "PF_memcpy: invalid source\n");
		return;
	}
	memmove(prinst->stringtable + dst, prinst->stringtable + src, size);
}
void QCBUILTIN PF_memfill8 (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int dst = G_INT(OFS_PARM0);
	int val = G_INT(OFS_PARM1);
	int size = G_INT(OFS_PARM2);
	if (dst < 0 || dst+size >= prinst->stringtablesize)
	{
		PR_BIError(prinst, "PF_memcpy: invalid dest\n");
		return;
	}
	memset(prinst->stringtable + dst, val, size);
}

void QCBUILTIN PF_memptradd (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	//convienience function. needed for: ptr = &ptr[5]; or ptr += 5;
	int dst = G_INT(OFS_PARM0);
	float ofs = G_FLOAT(OFS_PARM1);
	if (ofs != (float)(int)ofs)
		PR_BIError(prinst, "PF_memptradd: non-integer offset\n");
	if ((int)ofs & 3)
		PR_BIError(prinst, "PF_memptradd: offset is not 32-bit aligned.\n");	//means pointers can internally be expressed as 16.16 with 18-bit segments/allocations.

	G_INT(OFS_RETURN) = dst + ofs;
}

void QCBUILTIN PF_memstrsize(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = strlen(PR_GetStringOfs(prinst, OFS_PARM0));
}

//memory stuff
////////////////////////////////////////////////////
//hash table stuff
typedef struct
{
	pubprogfuncs_t *prinst;
	etype_t defaulttype;
	hashtable_t tab;
	void *bucketmem;
} pf_hashtab_t;
typedef struct 
{
	bucket_t	buck;
	char		*name;
	etype_t		type;
	union
	{
		vec3_t	data;
		char	*stringdata;
	};
} pf_hashentry_t;
pf_hashtab_t *pf_hashtab;
size_t pf_hash_maxtables;
pf_hashtab_t pf_peristanthashtab;	//persists over map changes.
pf_hashtab_t pf_reverthashtab;		//pf_peristanthashtab as it was at map start, for map restarts.
static pf_hashtab_t *PF_hash_findtab(pubprogfuncs_t *prinst, int idx)
{
	idx -= 1;
	if (idx >= 0 && (unsigned)idx < pf_hash_maxtables && pf_hashtab[idx].prinst)
		return &pf_hashtab[idx];
	else if (idx == -1)
	{
		if (!pf_peristanthashtab.tab.numbuckets)
		{
			int numbuckets = 256;
			pf_peristanthashtab.defaulttype = ev_string;
			pf_peristanthashtab.prinst = NULL;
			pf_peristanthashtab.bucketmem = Z_Malloc(Hash_BytesForBuckets(numbuckets));
			Hash_InitTable(&pf_peristanthashtab.tab, numbuckets, pf_peristanthashtab.bucketmem);
		}
		return &pf_peristanthashtab;
	}
	else
		PR_BIError(prinst, "PF_hash_findtab: invalid hash table\n");
	return NULL;
};

void QCBUILTIN PF_hash_getkey (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	pf_hashtab_t *tab = PF_hash_findtab(prinst, G_FLOAT(OFS_PARM0));
	int idx = G_FLOAT(OFS_PARM1);
	pf_hashentry_t *ent = NULL;
	G_INT(OFS_RETURN) = 0;
	if (tab)
	{
		ent = Hash_GetIdx(&tab->tab, idx);
		if (ent)
			RETURN_TSTRING(ent->name);
	}
}
void QCBUILTIN PF_hash_delete (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	pf_hashtab_t *tab = PF_hash_findtab(prinst, G_FLOAT(OFS_PARM0));
	const char *name = PR_GetStringOfs(prinst, OFS_PARM1);
	pf_hashentry_t *ent = NULL;
	memset(G_VECTOR(OFS_RETURN), 0, sizeof(vec3_t));
	if (tab)
	{
		ent = Hash_Get(&tab->tab, name);
		if (ent)
		{
			if (ent->type == ev_string)
			{
				G_INT(OFS_RETURN+2) = 0;
				G_INT(OFS_RETURN+1) = 0;
				RETURN_TSTRING(ent->stringdata);
			}
			else
				memcpy(G_VECTOR(OFS_RETURN), ent->data, sizeof(vec3_t));
			Hash_RemoveData(&tab->tab, name, ent);
			BZ_Free(ent);
		}
	}
}
void QCBUILTIN PF_hash_get (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	pf_hashtab_t *tab = PF_hash_findtab(prinst, G_FLOAT(OFS_PARM0));
	const char *name = PR_GetStringOfs(prinst, OFS_PARM1);
	void *dflt = (prinst->callargc>2)?G_VECTOR(OFS_PARM2):vec3_origin;
	int type = (prinst->callargc>3)?G_FLOAT(OFS_PARM3):0;
	int index = (prinst->callargc>4)?G_FLOAT(OFS_PARM4):0;
	pf_hashentry_t *ent = NULL;
	if (tab)
	{
		ent = Hash_Get(&tab->tab, name);
		//skip ones that are the wrong type.
		while (type != 0 && ent && ent->type != type)
			ent = Hash_GetNext(&tab->tab, name, ent);
		//and ones that are not the match that we're after.
		while(index-->0 && ent)
		{
			ent = Hash_GetNext(&tab->tab, name, ent);
			while (type != 0 && ent && ent->type != type)
				ent = Hash_GetNext(&tab->tab, name, ent);
		}
		if (ent)
		{
			if (ent->type == ev_string)
			{
				G_INT(OFS_RETURN+2) = 0;
				G_INT(OFS_RETURN+1) = 0;
				RETURN_TSTRING(ent->stringdata);
			}
			else
				memcpy(G_VECTOR(OFS_RETURN), ent->data, sizeof(vec3_t));
		}
		else
			memcpy(G_VECTOR(OFS_RETURN), dflt, sizeof(vec3_t));
	}
}
void QCBUILTIN PF_hash_getcb (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
/*
	pf_hashtab_t *tab = PF_hash_findtab(prinst, G_FLOAT(OFS_PARM0));
	func_t callback = G_FUNCTION(OFS_PARM1);
	char *name = PR_GetStringOfs(prinst, OFS_PARM2);
	pf_hashentry_t *ent = NULL;
	if (tab >= 0 && tab < MAX_QC_HASHTABLES && pf_hashtab[tab].valid)
		ent = Hash_Get(&pf_hashtab[tab].tab, name);
	else
		PR_BIError(prinst, "PF_hash_getcb: invalid hash table\n");
	if (ent)
		memcpy(G_VECTOR(OFS_RETURN), ent->data, sizeof(vec3_t));
	else
		memcpy(G_VECTOR(OFS_RETURN), G_VECTOR(OFS_PARM2), sizeof(vec3_t));
*/
}
void QCBUILTIN PF_hash_add (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	pf_hashtab_t *tab = PF_hash_findtab(prinst, G_FLOAT(OFS_PARM0));
	const char *name = PR_GetStringOfs(prinst, OFS_PARM1);
	void *data = G_VECTOR(OFS_PARM2);
	int flags = (prinst->callargc>3)?G_FLOAT(OFS_PARM3):0;
	int type = flags & 0xff;
	pf_hashentry_t *ent = NULL;
	if (tab && *name)	//our hash tables can't cope with empty keys.
	{
		if (!type)
			type = tab->defaulttype;
		if (!(flags & 512) || (flags & 256))
		{
			ent = Hash_Get(&tab->tab, name);
			if (ent)
			{
				Hash_RemoveData(&tab->tab, name, ent);
				BZ_Free(ent);
			}
		}

		if (type == ev_string)
		{	//strings copy their value out.
			const char *value = PR_GetStringOfs(prinst, OFS_PARM2);
			int nlen = strlen(name);
			int vlen = strlen(value);
			ent = BZ_Malloc(sizeof(*ent) + nlen+1 + vlen+1);
			ent->name = (char*)(ent+1);
			ent->type = ev_string;
			ent->stringdata = ent->name+(nlen+1);
			memcpy(ent->name, name, nlen);
			ent->name[nlen] = 0;
			memcpy(ent->stringdata, value, vlen+1);
			Hash_Add(&tab->tab, ent->name, ent, &ent->buck);
		}
		else
		{
			int nlen = strlen(name);
			ent = BZ_Malloc(sizeof(*ent) + nlen + 1);
			ent->name = (char*)(ent+1);
			ent->type = type;
			memcpy(ent->name, name, nlen);
			ent->name[nlen] = 0;
			memcpy(ent->data, data, sizeof(vec3_t));
			Hash_Add(&tab->tab, ent->name, ent, &ent->buck);
		}
	}
}
static void PF_hash_destroytab_enum(void *ctx, void *ent)
{
	BZ_Free(ent);
}
void QCBUILTIN PF_hash_destroytab (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	pf_hashtab_t *tab = PF_hash_findtab(prinst, G_FLOAT(OFS_PARM0));
	if (tab && tab->prinst == prinst)
	{
		tab->prinst = NULL;
		Hash_Enumerate(&tab->tab, PF_hash_destroytab_enum, NULL);
		Z_Free(tab->bucketmem);
	}
}
void PF_Hash_DestroyAll(pubprogfuncs_t *prinst)
{
	qboolean freed = true;
	size_t idx;
	for (idx = 0; idx < pf_hash_maxtables; idx++)
	{
		if (pf_hashtab[idx].prinst == prinst)
		{
			pf_hashtab[idx].prinst = NULL;
			Hash_Enumerate(&pf_hashtab[idx].tab, PF_hash_destroytab_enum, NULL);
			Z_Free(pf_hashtab[idx].bucketmem);
		}
		else if (pf_hashtab[idx].prinst)
			freed = false;
	}

	if (freed && pf_hashtab)
	{
		pf_hash_maxtables = 0;
		Z_Free(pf_hashtab);
		pf_hashtab	= NULL;
	}
}
void QCBUILTIN PF_hash_createtab (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	//FIXME: these need to be managed by the qcvm for garbage collection
	int i;
	int numbuckets = G_FLOAT(OFS_PARM0);
//	qboolean dupestrings = (prinst->callargc>1)?G_FLOAT(OFS_PARM1):false;
	etype_t type = (prinst->callargc>1)?G_FLOAT(OFS_PARM1):ev_vector;
	if (!type)
		type = ev_vector;
	if (numbuckets < 4)
		numbuckets = 64;

	for (i = 0; i < pf_hash_maxtables; i++)
	{	//look for an empty slot
		if (!pf_hashtab[i].prinst)
			break;
	}
	if (i == pf_hash_maxtables)
	{	//all slots taken, expand list
		if (!ZF_ReallocElements((void**)&pf_hashtab, &pf_hash_maxtables, pf_hash_maxtables+64, sizeof(*pf_hashtab)))
		{
			G_FLOAT(OFS_RETURN) = 0;
			return;
		}
	}

	//fill it in
	pf_hashtab[i].defaulttype = type;
	pf_hashtab[i].prinst = prinst;
	pf_hashtab[i].bucketmem = Z_Malloc(Hash_BytesForBuckets(numbuckets));
	Hash_InitTable(&pf_hashtab[i].tab, numbuckets, pf_hashtab[i].bucketmem);
	G_FLOAT(OFS_RETURN) = i + 1;
}

void pf_hash_savegame(void)	//write the persistant table to a saved game.
{
}
void pf_hash_loadgame(void)	//(re)load the persistant table.
{
}
void pf_hash_preserve(void)	//map changed, make sure it can be reset properly.
{
}
void pf_hash_purge(void)	//restart command was used. revert to the state at the start of the map.
{
}

//hash table stuff
////////////////////////////////////////////////////
//File access

#define MAX_QC_FILES 256

#define FIRST_QC_FILE_INDEX 1000

typedef struct {
	char name[256];
	char *data;
	size_t bufferlen;
	size_t len;
	size_t ofs;
	int accessmode;
	pubprogfuncs_t *prinst;
} pf_fopen_files_t;
pf_fopen_files_t pf_fopen_files[MAX_QC_FILES];

//returns false if the file is denied.
//fallbackread can be NULL, if the qc is not allowed to read that (original) file at all.
qboolean QC_FixFileName(const char *name, const char **result, const char **fallbackread)
{
	char ext[8];

	if (!*name ||	//blank names are bad
		strchr(name, ':') ||	//dos/win absolute path, ntfs ADS, amiga drives. reject them all.
		strchr(name, '\\') ||	//windows-only paths.
		*name == '/' ||	//absolute path was given - reject
		strstr(name, ".."))	//someone tried to be clever.
	{
		return false;
	}

	*fallbackread = name;
	//if its a user config, ban any fallback locations so that csqc can't read passwords or whatever.
	if ((!strchr(name, '/') || strnicmp(name, "configs/", 8)) 
		&& !stricmp(COM_FileExtension(name, ext, sizeof(ext)), "cfg")
		&& strnicmp(name, "particles/", 10) && strnicmp(name, "huds/", 5) && strnicmp(name, "models/", 7))
		*fallbackread = NULL;
	*result = va("data/%s", name);
	return true;
}

void QCBUILTIN PF_fopen (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *name = PR_GetStringOfs(prinst, OFS_PARM0);
	int fmode = G_FLOAT(OFS_PARM1);
	int fsize = G_FLOAT(OFS_PARM2);
	const char *fallbackread;
	int i;
	size_t insize;

	for (i = 0; i < MAX_QC_FILES; i++)
		if (!pf_fopen_files[i].data)
			break;

	if (i == MAX_QC_FILES)	//too many already open
	{
		Con_Printf("qcfopen: too many files open (trying %s)\n", name);
		G_FLOAT(OFS_RETURN) = -1;
		return;
	}

	if (!QC_FixFileName(name, &name, &fallbackread))
	{
		Con_Printf("qcfopen: Access denied: %s\n", name);
		G_FLOAT(OFS_RETURN) = -1;
		return;
	}

	Q_strncpyz(pf_fopen_files[i].name, name, sizeof(pf_fopen_files[i].name));

	pf_fopen_files[i].accessmode = fmode;
	switch (fmode)
	{
	case FRIK_FILE_MMAP_READ:
	case FRIK_FILE_MMAP_RW:
		{
			vfsfile_t *f = FS_OpenVFS(pf_fopen_files[i].name, "rb", FS_GAME);
			if (!f && fallbackread)
				f = FS_OpenVFS(fallbackread, "rb", FS_GAME);
			if (f)
			{
				pf_fopen_files[i].bufferlen = pf_fopen_files[i].len = VFS_GETLEN(f);
				if (pf_fopen_files[i].bufferlen < fsize)
					pf_fopen_files[i].bufferlen = fsize;
				pf_fopen_files[i].data = PR_AddressableAlloc(prinst, pf_fopen_files[i].bufferlen);
				VFS_READ(f, pf_fopen_files[i].data, pf_fopen_files[i].len);
				VFS_CLOSE(f);
			}
			else if (fmode == FRIK_FILE_MMAP_RW)
			{
				pf_fopen_files[i].bufferlen = fsize;
				pf_fopen_files[i].data = PR_AddressableAlloc(prinst, pf_fopen_files[i].bufferlen);
			}
			else
			{
				pf_fopen_files[i].bufferlen = 0;
				pf_fopen_files[i].data = NULL;
			}

			if (!pf_fopen_files[i].data)
			{
				G_FLOAT(OFS_RETURN) = -1;
				break;
			}

			pf_fopen_files[i].len = pf_fopen_files[i].bufferlen;
			pf_fopen_files[i].ofs = 0;
			G_FLOAT(OFS_RETURN) = i + FIRST_QC_FILE_INDEX;
			pf_fopen_files[i].prinst = prinst;
		}
		break;
	case FRIK_FILE_READ:	//read
	case FRIK_FILE_READNL:	//read whole file
		fsize = FS_LoadFile(pf_fopen_files[i].name, (void**)&pf_fopen_files[i].data);
		if (!pf_fopen_files[i].data && fallbackread)
		{
			Q_strncpyz(pf_fopen_files[i].name, fallbackread, sizeof(pf_fopen_files[i].name));
			fsize = FS_LoadFile(pf_fopen_files[i].name, (void**)&pf_fopen_files[i].data);
		}

		if (pf_fopen_files[i].data)
		{
			G_FLOAT(OFS_RETURN) = i + FIRST_QC_FILE_INDEX;
			pf_fopen_files[i].prinst = prinst;
		}
		else
			G_FLOAT(OFS_RETURN) = -1;

		pf_fopen_files[i].bufferlen = pf_fopen_files[i].len = fsize;
		pf_fopen_files[i].ofs = 0;
		break;
	case FRIK_FILE_APPEND:	//append
		pf_fopen_files[i].data = FS_LoadMallocFile(pf_fopen_files[i].name, &insize);
		pf_fopen_files[i].ofs = pf_fopen_files[i].bufferlen = pf_fopen_files[i].len = insize;
		if (pf_fopen_files[i].data)
		{
			G_FLOAT(OFS_RETURN) = i + FIRST_QC_FILE_INDEX;
			pf_fopen_files[i].prinst = prinst;
			break;
		}
		//file didn't exist - fall through
	case FRIK_FILE_WRITE:	//write
		pf_fopen_files[i].bufferlen = 8192;
		pf_fopen_files[i].data = BZ_Malloc(pf_fopen_files[i].bufferlen);
		pf_fopen_files[i].len = 0;
		pf_fopen_files[i].ofs = 0;
		G_FLOAT(OFS_RETURN) = i + FIRST_QC_FILE_INDEX;
		pf_fopen_files[i].prinst = prinst;
		break;
	case FRIK_FILE_INVALID:
		pf_fopen_files[i].bufferlen = 0;
		pf_fopen_files[i].data = "";
		pf_fopen_files[i].len = 0;
		pf_fopen_files[i].ofs = 0;
		G_FLOAT(OFS_RETURN) = i + FIRST_QC_FILE_INDEX;
		pf_fopen_files[i].prinst = prinst;
		break;
	default: //bad
		G_FLOAT(OFS_RETURN) = -1;
		break;
	}
}

void PF_fclose_i (int fnum)
{
	if (fnum < 0 || fnum >= MAX_QC_FILES)
	{
		Con_Printf("PF_fclose: File out of range\n");
		return;	//out of range
	}

	if (!pf_fopen_files[fnum].data)
	{
		Con_Printf("PF_fclose: File is not open\n");
		return;	//not open
	}

	switch(pf_fopen_files[fnum].accessmode)
	{
	case FRIK_FILE_MMAP_RW:
		COM_WriteFile(pf_fopen_files[fnum].name, FS_GAMEONLY, pf_fopen_files[fnum].data, pf_fopen_files[fnum].len);
		/*fall through*/
	case FRIK_FILE_MMAP_READ:
		pf_fopen_files[fnum].prinst->AddressableFree(pf_fopen_files[fnum].prinst, pf_fopen_files[fnum].data);
		break;

	case FRIK_FILE_READ:
	case 4:
		BZ_Free(pf_fopen_files[fnum].data);
		break;
	case 1:
	case 2:
		COM_WriteFile(pf_fopen_files[fnum].name, FS_GAMEONLY, pf_fopen_files[fnum].data, pf_fopen_files[fnum].len);
		BZ_Free(pf_fopen_files[fnum].data);
		break;
	case 3:
		break;
	}
	pf_fopen_files[fnum].data = NULL;
	pf_fopen_files[fnum].prinst = NULL;
}

void QCBUILTIN PF_fclose (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int fnum = G_FLOAT(OFS_PARM0)-FIRST_QC_FILE_INDEX;

	if (fnum < 0 || fnum >= MAX_QC_FILES)
	{
		PF_Warningf(prinst, "PF_fclose: File out of range (%g)\n", G_FLOAT(OFS_PARM0));
		return;	//out of range
	}

	if (pf_fopen_files[fnum].prinst != prinst)
	{
		PF_Warningf(prinst, "PF_fclose: File is from wrong instance\n");
		return;	//this just isn't ours.
	}

	PF_fclose_i(fnum);
}

void QCBUILTIN PF_fgets (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	char c, *s, *o, *max, *eof;
	int fnum = G_FLOAT(OFS_PARM0) - FIRST_QC_FILE_INDEX;
	char pr_string_temp[4096];

	*pr_string_temp = '\0';
	G_INT(OFS_RETURN) = 0;	//EOF
	if (fnum < 0 || fnum >= MAX_QC_FILES)
	{
		PR_BIError(prinst, "PF_fgets: File out of range\n");
		return;	//out of range
	}

	if (!pf_fopen_files[fnum].data)
	{
		PR_BIError(prinst, "PF_fgets: File is not open\n");
		return;	//not open
	}

	if (pf_fopen_files[fnum].prinst != prinst)
	{
		PR_BIError(prinst, "PF_fgets: File is from wrong instance\n");
		return;	//this just isn't ours.
	}

	if (pf_fopen_files[fnum].accessmode == FRIK_FILE_MMAP_READ || pf_fopen_files[fnum].accessmode == FRIK_FILE_MMAP_RW)
	{
		G_INT(OFS_RETURN) = PR_SetString(prinst, pf_fopen_files[fnum].data);
		return;
	}
	
	if (pf_fopen_files[fnum].accessmode == FRIK_FILE_READNL)
	{
		if (pf_fopen_files[fnum].ofs >= pf_fopen_files[fnum].len)
			G_INT(OFS_RETURN) = 0;	//EOF
		else
			RETURN_TSTRING(pf_fopen_files[fnum].data);
	}
	else
	{
		//read up to the next \n, ignoring any \rs.
		o = pr_string_temp;
		max = o + sizeof(pr_string_temp)-1;
		s = pf_fopen_files[fnum].data+pf_fopen_files[fnum].ofs;
		eof = pf_fopen_files[fnum].data+pf_fopen_files[fnum].len;
		
		if (s >= eof)
		{
			G_INT(OFS_RETURN) = 0;	//EOF
			return;
		}

		while(s < eof)
		{
			c = *s++;
			if (c == '\n' && pf_fopen_files[fnum].accessmode != FRIK_FILE_READNL)
				break;
			if (c == '\r' && pf_fopen_files[fnum].accessmode != FRIK_FILE_READNL)
				continue;

			if (c == 0)
			{	//modified utf-8, woo. but don't double-encode other chars.
				if (o+1 >= max)
					break;
				*o++ = 0xc0;
				*o++ = 0x80;
			}
			else
			{
				if (o == max)
					break;
				*o++ = c;
			}
		}
		*o = '\0';

		pf_fopen_files[fnum].ofs = s - pf_fopen_files[fnum].data;

		RETURN_TSTRING(pr_string_temp);
	}
}

//ensures that the buffer is at least big enough.
static qboolean PF_fresizebuffer_internal (pf_fopen_files_t *f, size_t newlen)
{
	switch(f->accessmode)
	{
	default:
		return false;
	case FRIK_FILE_MMAP_RW:
		//mmap cannot change the buffer size/allocation.
		if (newlen > f->bufferlen)
			return false;
		break;
	case FRIK_FILE_APPEND:
	case FRIK_FILE_WRITE:
		if (f->bufferlen < newlen)
		{
			char *newbuf;
			size_t newbuflen = max(newlen, newlen*2+1024);
			newbuf = BZF_Malloc(newbuflen);
			if (!newbuf)
				return false;
			memcpy(newbuf, f->data, f->bufferlen);
			memset(newbuf+f->bufferlen, 0, newbuflen - f->bufferlen);
			BZ_Free(f->data);
			f->data = newbuf;
			f->bufferlen = newbuflen;
		}
		break;
	}
	return true;
}
static int PF_fwrite_internal (pubprogfuncs_t *prinst, int fnum, char *msg, size_t len)
{
	if (fnum < 0 || fnum >= MAX_QC_FILES)
	{
		PF_Warningf(prinst, "PF_fwrite: File out of range\n");
		return 0;	//out of range
	}

	if (!pf_fopen_files[fnum].data)
	{
		PF_Warningf(prinst, "PF_fwrite: File is not open\n");
		return 0;	//not open
	}

	if (pf_fopen_files[fnum].prinst != prinst)
	{
		PF_Warningf(prinst, "PF_fwrite: File is from wrong instance\n");
		return 0;	//this just isn't ours.
	}

	if (pf_fopen_files[fnum].ofs + len < pf_fopen_files[fnum].ofs)
	{
		PF_Warningf(prinst, "PF_fwrite: size overflow\n");
		return 0;
	}

	switch(pf_fopen_files[fnum].accessmode)
	{
	default:
		return 0;
	case FRIK_FILE_APPEND:
	case FRIK_FILE_WRITE:
	case FRIK_FILE_MMAP_RW:
		PF_fresizebuffer_internal(&pf_fopen_files[fnum], pf_fopen_files[fnum].ofs+len);
		len = min(len, pf_fopen_files[fnum].bufferlen-pf_fopen_files[fnum].ofs);

		memcpy(pf_fopen_files[fnum].data + pf_fopen_files[fnum].ofs, msg, len);
		if (pf_fopen_files[fnum].len < pf_fopen_files[fnum].ofs + len)
			pf_fopen_files[fnum].len = pf_fopen_files[fnum].ofs + len;
		pf_fopen_files[fnum].ofs+=len;
		return len;
	}
}

static int PF_fread_internal (pubprogfuncs_t *prinst, int fnum, char *msg, size_t len)
{
	if (fnum < 0 || fnum >= MAX_QC_FILES)
	{
		PF_Warningf(prinst, "PF_fread: File out of range\n");
		return 0;	//out of range
	}

	if (!pf_fopen_files[fnum].data)
	{
		PF_Warningf(prinst, "PF_fread: File is not open\n");
		return 0;	//not open
	}

	if (pf_fopen_files[fnum].prinst != prinst)
	{
		PF_Warningf(prinst, "PF_fread: File is from wrong instance\n");
		return 0;	//this just isn't ours.
	}

	switch(pf_fopen_files[fnum].accessmode)
	{
	default:
		return 0;
	case FRIK_FILE_READ:
		//UTF-8-FIXME: de-modify utf-8
		if (pf_fopen_files[fnum].ofs + len > pf_fopen_files[fnum].len)
			len = pf_fopen_files[fnum].len - pf_fopen_files[fnum].ofs;

		memcpy(msg, pf_fopen_files[fnum].data + pf_fopen_files[fnum].ofs, len);
		pf_fopen_files[fnum].ofs+=len;
		return len;
	}
}

void QCBUILTIN PF_fputs (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int fnum = G_FLOAT(OFS_PARM0) - FIRST_QC_FILE_INDEX;
	char *msg = PF_VarString(prinst, 1, pr_globals);
	int len = strlen(msg);

	PF_fwrite_internal (prinst, fnum, msg, len);
}

void QCBUILTIN PF_fwrite (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int fnum = G_FLOAT(OFS_PARM0) - FIRST_QC_FILE_INDEX;
	int ptr = G_INT(OFS_PARM1);
	int size = G_INT(OFS_PARM2);
	if (ptr < 0 || size < 0 || ptr+size >= prinst->stringtablesize)
	{
		PR_BIError(prinst, "PF_fwrite: invalid ptr / size\n");
		return;
	}

	G_INT(OFS_PARM1) = PF_fwrite_internal (prinst, fnum, prinst->stringtable + ptr, size);
}
void QCBUILTIN PF_fread (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int fnum = G_FLOAT(OFS_PARM0) - FIRST_QC_FILE_INDEX;
	int ptr = G_INT(OFS_PARM1);
	int size = G_INT(OFS_PARM2);
	if (ptr < 0 || size < 0 || ptr+size >= prinst->stringtablesize)
	{
		PR_BIError(prinst, "PF_fread: invalid ptr / size\n");
		return;
	}

	G_INT(OFS_PARM1) = PF_fread_internal (prinst, fnum, prinst->stringtable + ptr, size);
}
void QCBUILTIN PF_fseek (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int fnum = G_FLOAT(OFS_PARM0) - FIRST_QC_FILE_INDEX;
	G_INT(OFS_RETURN) = -1;
	if (fnum < 0 || fnum >= MAX_QC_FILES)
	{
		PF_Warningf(prinst, "PF_fread: File out of range\n");
		return;	//out of range
	}
	if (!pf_fopen_files[fnum].data)
	{
		PF_Warningf(prinst, "PF_fread: File is not open\n");
		return;	//not open
	}
	if (pf_fopen_files[fnum].prinst != prinst)
	{
		PF_Warningf(prinst, "PF_fread: File is from wrong instance\n");
		return;	//this just isn't ours.
	}

	G_INT(OFS_RETURN) = pf_fopen_files[fnum].ofs;
	if (prinst->callargc>1 && G_INT(OFS_PARM1) >= 0)
	{
		pf_fopen_files[fnum].ofs = G_INT(OFS_PARM1);
	}
}
void QCBUILTIN PF_fsize (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int fnum = G_FLOAT(OFS_PARM0) - FIRST_QC_FILE_INDEX;
	G_INT(OFS_RETURN) = -1;
	if (fnum < 0 || fnum >= MAX_QC_FILES)
	{
		PF_Warningf(prinst, "PF_fsize: File out of range\n");
		return;	//out of range
	}
	if (!pf_fopen_files[fnum].data)
	{
		PF_Warningf(prinst, "PF_fsize: File is not open\n");
		return;	//not open
	}
	if (pf_fopen_files[fnum].prinst != prinst)
	{
		PF_Warningf(prinst, "PF_fsize: File is from wrong instance\n");
		return;	//this just isn't ours.
	}

	G_INT(OFS_RETURN) = pf_fopen_files[fnum].len;
	if (prinst->callargc>1 && G_INT(OFS_PARM1) >= 0)
	{
		size_t newlen = G_INT(OFS_PARM1);
		PF_fresizebuffer_internal(&pf_fopen_files[fnum], newlen);
		pf_fopen_files[fnum].len = min(pf_fopen_files[fnum].bufferlen, newlen);
	}
}

void PF_fcloseall (pubprogfuncs_t *prinst)
{
	qboolean write;
	int i;
	for (i = 0; i < MAX_QC_FILES; i++)
	{
		if (pf_fopen_files[i].prinst != prinst)
			continue;

		switch(pf_fopen_files[i].accessmode)
		{
		case FRIK_FILE_APPEND:
		case FRIK_FILE_WRITE:
		case FRIK_FILE_MMAP_RW:
			write = true;
			break;
		default:
			write = false;
			break;
		}
		if (developer.ival || write)
			Con_Printf("qc file %s was still open\n", pf_fopen_files[i].name);
		PF_fclose_i(i);
	}
	tokenizeqc("", false);
	PF_buf_shutdown(prinst);	//might as well put this here
}


//DP_QC_WHICHPACK
void QCBUILTIN PF_whichpack (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *srcname = PR_GetStringOfs(prinst, OFS_PARM0);
	qboolean makereferenced = prinst->callargc>1?G_FLOAT(OFS_PARM1):true;
	flocation_t loc;

	if (FS_FLocateFile(srcname, FSLF_IFFOUND, &loc))
	{
		srcname = FS_WhichPackForLocation(&loc, makereferenced);
		if (srcname == NULL)
			srcname = "";
		RETURN_TSTRING(srcname);
	}
	else
	{
		G_INT(OFS_RETURN) = 0;	//null/empty
	}

}


typedef struct prvmsearch_s {
	int handle;
	pubprogfuncs_t *fromprogs;	//share across menu/server
	int entries;
	struct
	{
		char *name;
		qofs_t size;
		time_t mtime;
	} *entry;
	struct prvmsearch_s *next;
} prvmsearch_t;
prvmsearch_t *prvmsearches;
int prvm_nextsearchhandle;

void search_close (pubprogfuncs_t *prinst, int handle)
{
	int i;
	prvmsearch_t *prev, *s;

	prev = NULL;
	for (s = prvmsearches; s; )
	{
		if (s->handle == handle)
		{	//close it down.
			if (s->fromprogs != prinst)
			{
				PF_Warningf(prinst, "Handle wasn't valid with that progs\n");
				return;
			}
			if (prev)
				prev->next = s->next;
			else
				prvmsearches = s->next;

			for (i = 0; i < s->entries; i++)
			{
				BZ_Free(s->entry[i].name);
			}
			BZ_Free(s->entry);
			BZ_Free(s);

			return;
		}

		prev = s;
		s = s->next;
	}
}
//a progs was closed... hunt down it's searches, and warn about any searches left open.
void search_close_progs(pubprogfuncs_t *prinst, qboolean complain)
{
	int i;
	prvmsearch_t *prev, *s;

	prev = NULL;
	for (s = prvmsearches; s; )
	{
		if (s->fromprogs == prinst)
		{	//close it down.

			if (complain)
				Con_Printf("Warning: Progs search was still active\n");
			if (prev)
				prev->next = s->next;
			else
				prvmsearches = s->next;

			for (i = 0; i < s->entries; i++)
			{
				BZ_Free(s->entry[i].name);
			}
			BZ_Free(s->entry);
			BZ_Free(s);

			if (prev)
				s = prev->next;
			else
				s = prvmsearches;
			continue;
		}

		prev = s;
		s = s->next;
	}

	if (!prvmsearches)
		prvm_nextsearchhandle = 0;	//might as well.
}

int QDECL search_enumerate(const char *name, qofs_t fsize, time_t mtime, void *parm, searchpathfuncs_t *spath)
{
	prvmsearch_t *s = parm;

	size_t i;
	for (i = 0; i < s->entries; i++)
	{
		if (!Q_strcasecmp(name, s->entry[i].name))
			return true;	//already in the list, apparently. try to avoid dupes.
	}

	s->entry = BZ_Realloc(s->entry, ((s->entries+64)&~63) * sizeof(*s->entry));
	s->entry[s->entries].name = BZ_Malloc(strlen(name)+1);
	strcpy(s->entry[s->entries].name, name);
	s->entry[s->entries].size = fsize;
	s->entry[s->entries].mtime = mtime;

	s->entries++;
	return true;
}

//float	search_begin(string pattern, float caseinsensitive, float quiet) = #74;
void QCBUILTIN PF_search_begin (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{	//< 0 for error, >= 0 for handle.
	//error includes bad search patterns, but not no files
	const char *pattern = PR_GetStringOfs(prinst, OFS_PARM0);
//	qboolean caseinsensitive = G_FLOAT(OFS_PARM1);
//	qboolean quiet = G_FLOAT(OFS_PARM2);
	prvmsearch_t *s;

	if (!*pattern || (*pattern == '.' && pattern[1] == '.') || *pattern == '/' || *pattern == '\\' || strchr(pattern, ':'))
	{
		PF_Warningf(prinst, "PF_search_begin: bad search pattern \"%s\"\n", pattern);
		G_FLOAT(OFS_RETURN) = -1;
		return;
	}

	s = Z_Malloc(sizeof(*s));
	s->fromprogs = prinst;
	s->handle = prvm_nextsearchhandle++;

	COM_EnumerateFiles(pattern, search_enumerate, s);

	s->next = prvmsearches;
	prvmsearches = s;
	G_FLOAT(OFS_RETURN) = s->handle;
}
//void	search_end(float handle) = #75;
void QCBUILTIN PF_search_end (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int handle = G_FLOAT(OFS_PARM0);
	search_close(prinst, handle);
}
//float	search_getsize(float handle) = #76;
void QCBUILTIN PF_search_getsize (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int handle = G_FLOAT(OFS_PARM0);
	prvmsearch_t *s;
	G_FLOAT(OFS_RETURN) = 0;
	for (s = prvmsearches; s; s = s->next)
	{
		if (s->handle == handle)
		{	//close it down.
			if (s->fromprogs != prinst)
			{
				PF_Warningf(prinst, "Handle wasn't valid with that progs\n");
				return;
			}

			G_FLOAT(OFS_RETURN) = s->entries;
			return;
		}
	}
}
//string	search_getfilename(float handle, float num) = #77;
void QCBUILTIN PF_search_getfilename (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int handle = G_FLOAT(OFS_PARM0);
	int num = G_FLOAT(OFS_PARM1);
	prvmsearch_t *s;
	G_INT(OFS_RETURN) = 0;

	for (s = prvmsearches; s; s = s->next)
	{
		if (s->handle == handle)
		{	//close it down.
			if (s->fromprogs != prinst)
			{
				PF_Warningf(prinst, "Search handle wasn't valid with that progs\n");
				return;
			}

			if (num < 0 || num >= s->entries)
				return;
			RETURN_TSTRING(s->entry[num].name);
			return;
		}
	}

	PF_Warningf(prinst, "Search handle wasn't valid\n");
}
void QCBUILTIN PF_search_getfilesize (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int handle = G_FLOAT(OFS_PARM0);
	int num = G_FLOAT(OFS_PARM1);
	prvmsearch_t *s;
	G_INT(OFS_RETURN) = 0;

	for (s = prvmsearches; s; s = s->next)
	{
		if (s->handle == handle)
		{	//close it down.
			if (s->fromprogs != prinst)
			{
				PF_Warningf(prinst, "Search handle wasn't valid with that progs\n");
				return;
			}

			if (num < 0 || num >= s->entries)
				return;
			G_FLOAT(OFS_RETURN) = s->entry[num].size;
			return;
		}
	}

	PF_Warningf(prinst, "Search handle wasn't valid\n");
}
void QCBUILTIN PF_search_getfilemtime (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int handle = G_FLOAT(OFS_PARM0);
	int num = G_FLOAT(OFS_PARM1);
	prvmsearch_t *s;
	char timestr[128];
	G_INT(OFS_RETURN) = 0;

	for (s = prvmsearches; s; s = s->next)
	{
		if (s->handle == handle)
		{	//close it down.
			if (s->fromprogs != prinst)
			{
				PF_Warningf(prinst, "Search handle wasn't valid with that progs\n");
				return;
			}

			if (num < 0 || num >= s->entries)
				return;
			if (s->entry[num].mtime != 0)	//return null/empty if the time isn't set/known.
			{
				strftime(timestr, sizeof(timestr), "%Y-%m-%d %H:%M:%S", localtime(&s->entry[num].mtime));
				RETURN_TSTRING(timestr);
			}
			return;
		}
	}

	PF_Warningf(prinst, "Search handle wasn't valid\n");
}

//closes filesystem type stuff for when a progs has stopped needing it.
void PR_fclose_progs (pubprogfuncs_t *prinst)
{
	PF_fcloseall(prinst);
	search_close_progs(prinst, true);
	PF_Hash_DestroyAll(prinst);
}

//File access
////////////////////////////////////////////////////
//reflection

//float	isfunction(string function_name)
void QCBUILTIN PF_isfunction (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char	*name = PR_GetStringOfs(prinst, OFS_PARM0);
	G_FLOAT(OFS_RETURN) = !!PR_FindFunction(prinst, name, PR_ANY);
}

//void	callfunction(...)
void QCBUILTIN PF_callfunction (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char	*name;
	func_t f;
	if (prinst->callargc < 1)
		PR_BIError(prinst, "callfunction needs at least one argument\n");
	name = PR_GetStringOfs(prinst, OFS_PARM0+(prinst->callargc-1)*3);
	prinst->callargc -= 1;
	f = PR_FindFunction(prinst, name, PR_ANY);
	if (f)
		PR_ExecuteProgram(prinst, f);
}

//void	loadfromfile(string file)
void QCBUILTIN PF_loadfromfile (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char	*filename = PR_GetStringOfs(prinst, OFS_PARM0);
	const char *file = COM_LoadTempFile(filename, NULL);

	size_t size;

	if (!file)
	{
		G_FLOAT(OFS_RETURN) = -1;
		return;
	}

	while(prinst->restoreent(prinst, file, &size, NULL))
	{
		file += size;
	}

	G_FLOAT(OFS_RETURN) = 0;
}

void QCBUILTIN PF_writetofile(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int fnum = G_FLOAT(OFS_PARM0)-FIRST_QC_FILE_INDEX;
	void *ed = G_EDICT(prinst, OFS_PARM1);

	char buffer[65536];
	char *entstr;
	size_t buflen;

	buflen = 0;
	entstr = prinst->saveent(prinst, buffer, &buflen, sizeof(buffer), ed);	//will save just one entities vars
	if (entstr)
	{
		PF_fwrite_internal (prinst, fnum, entstr, buflen);
	}
}

//read (multiple) {entity data} into new entities, with no real indication of how much was read.
void QCBUILTIN PF_loadfromdata (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char	*file = PR_GetStringOfs(prinst, OFS_PARM0);

	size_t size;

	if (!*file)
	{
		G_FLOAT(OFS_RETURN) = -1;
		return;
	}

	while(prinst->restoreent(prinst, file, &size, NULL))
	{
		file += size;
	}

	G_FLOAT(OFS_RETURN) = 0;
}

void QCBUILTIN PF_generateentitydata(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	void *ed = G_EDICT(prinst, OFS_PARM0);

	char buffer[65536];
	char *entstr;
	size_t buflen;

	buflen = 0;
	entstr = prinst->saveent(prinst, buffer, &buflen, sizeof(buffer), ed);

	if (entstr)
		RETURN_TSTRING(entstr);
	else
		G_INT(OFS_RETURN) = 0;
}

void QCBUILTIN PF_parseentitydata(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	void	*ed = G_EDICT(prinst, OFS_PARM0);
	const char	*file = PR_GetStringOfs(prinst, OFS_PARM1);
	int offset = (prinst->callargc>=3)?G_FLOAT(OFS_PARM2):0;

	size_t size;

	if (offset < 0)
		offset = 0;
	else if (offset)
	{
		int boffset = offset;
		if (VMUTF8)
			boffset = unicode_byteofsfromcharofs(file, offset, VMUTF8MARKUP);
		else
		{
			int l = strlen(file);
			if (boffset > l)
				boffset = l;
		}
		file += boffset;
	}

	if (!*file)
	{
		G_FLOAT(OFS_RETURN) = 0;
		return;
	}

	if (!prinst->restoreent(prinst, file, &size, ed))
	{
		if (prinst->callargc<3)
			PF_Warningf(prinst, "parseentitydata: missing opening data\n");
		G_FLOAT(OFS_RETURN) = 0;
		return;
	}
	else if (prinst->callargc<3)
	{
		file += size;
		while(*file < ' ' && *file)
			file++;
		if (*file)
			PF_Warningf(prinst, "parseentitydata: too much data\n");
	}

	if (VMUTF8)
		size = unicode_charofsfrombyteofs(file, size, VMUTF8MARKUP);

	G_FLOAT(OFS_RETURN) = offset + size;
}
//reflection
////////////////////////////////////////////////////
//Entities

void QCBUILTIN PF_WasFreed (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	wedict_t	*ent;
	ent = G_WEDICT(prinst, OFS_PARM0);
	G_FLOAT(OFS_RETURN) = ED_ISFREE(ent);
}

void QCBUILTIN PF_num_for_edict (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	wedict_t	*ent;
	ent = G_WEDICT(prinst, OFS_PARM0);
	G_FLOAT(OFS_RETURN) = ent->entnum;
}

void QCBUILTIN PF_edict_for_num(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	world_t *w = prinst->parms->user;
	edict_t	*ent;
	unsigned int num = G_FLOAT(OFS_PARM0);
	if (num >= w->num_edicts)
		RETURN_EDICT(prinst, w->edicts);

	ent = (edict_t*)EDICT_NUM(prinst, num);
	RETURN_EDICT(prinst, ent);
}

/*
=================
PF_findradius

Returns a chain of entities that have origins within a spherical area

findradius (origin, radius)
=================
*/
void QCBUILTIN PF_findradius (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	world_t *w = prinst->parms->user;
	extern cvar_t sv_gameplayfix_blowupfallenzombies;
	wedict_t	*ent, *chain;
	float	rad;
	float	*org;
	vec3_t	eorg;
	int		i, j;

	chain = w->edicts;

	org = G_VECTOR(OFS_PARM0);
	rad = G_FLOAT(OFS_PARM1);
	rad = rad*rad;

	for (i=1 ; i<w->num_edicts ; i++)
	{
		ent = WEDICT_NUM(prinst, i);
		if (ED_ISFREE(ent))
			continue;
		if (ent->v->solid == SOLID_NOT && (!((int)ent->v->flags & FL_FINDABLE_NONSOLID)) && !sv_gameplayfix_blowupfallenzombies.value)
			continue;
		for (j=0 ; j<3 ; j++)
			eorg[j] = org[j] - (ent->v->origin[j] + (ent->v->mins[j] + ent->v->maxs[j])*0.5);
		if (DotProduct(eorg,eorg) > rad)
			continue;

		ent->v->chain = EDICT_TO_PROG(prinst, chain);
		chain = ent;
	}

	RETURN_EDICT(prinst, chain);
}

//entity nextent(entity)
void QCBUILTIN PF_nextent (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int		i;
	wedict_t	*ent;

	i = G_EDICTNUM(prinst, OFS_PARM0);
	while (1)
	{
		i++;
		if (i == *prinst->parms->sv_num_edicts)
		{
			RETURN_EDICT(prinst, *prinst->parms->sv_edicts);
			return;
		}
		ent = WEDICT_NUM(prinst, i);
		if (!ED_ISFREE(ent))
		{
			RETURN_EDICT(prinst, ent);
			return;
		}
	}
}

//entity() spawn
void QCBUILTIN PF_Spawn (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	struct edict_s	*ed;
	ed = ED_Alloc(prinst, false, 0);
	pr_globals = PR_globals(prinst, PR_CURRENT);
	RETURN_EDICT(prinst, ed);
}

void QCBUILTIN PF_spawn_object (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int obj = G_INT(OFS_PARM0);
	int size = G_INT(OFS_PARM1);
	struct edict_s	*ed;
	ed = ED_Alloc(prinst, obj, size);
	pr_globals = PR_globals(prinst, PR_CURRENT);
	RETURN_EDICT(prinst, ed);
}

//EXTENSION: DP_QC_COPYENTITY

//void(entity from, entity to) copyentity = #400
//copies data from one entity to another
void QCBUILTIN PF_copyentity (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	world_t *w = prinst->parms->user;
	wedict_t *in, *out;

	in = G_WEDICT(prinst, OFS_PARM0);
	if (prinst->callargc <= 1)
		out = (wedict_t*)ED_Alloc(prinst, false, 0);
	else
		out = G_WEDICT(prinst, OFS_PARM1);

	if (ED_ISFREE(in))
		PR_BIError(prinst, "PF_copyentity: source is free");
	if (!out || ED_ISFREE(out))
		PR_BIError(prinst, "PF_copyentity: destination is free");
	if (out->readonly)
		PR_BIError(prinst, "PF_copyentity: destination is read-only");
	if (out->fieldsize != in->fieldsize)
		PR_BIError(prinst, "PF_copyentity: different object types");

	memcpy(out->v, in->v, out->fieldsize);
	World_LinkEdict(w, out, false);

	RETURN_EDICT(prinst, out);
}

void QCBUILTIN PF_entityprotection (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	wedict_t *e = G_WEDICT(prinst, OFS_PARM0);
	int prot = G_FLOAT(OFS_PARM1);

	if (ED_ISFREE(e))
		PR_BIError(prinst, "PF_entityprotection: entity is free");

	G_FLOAT(OFS_RETURN) = prot;
	if (prot < 0 || prot > 1)
		return;
	e->readonly = prot;
}

//Entities
////////////////////////////////////////////////////
//String functions

//PF_dprint
void QCBUILTIN PF_dprint (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	Con_DPrintf ("%s",PF_VarString(prinst, 0, pr_globals));
}

//PF_print
void QCBUILTIN PF_print (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	Con_Printf ("%s",PF_VarString(prinst, 0, pr_globals));
}

//FTE_STRINGS
//C style strncasecmp (compare first n characters - case insensitive)
//C style strcasecmp (case insensitive string compare)
void QCBUILTIN PF_strncasecmp (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *a = PR_GetStringOfs(prinst, OFS_PARM0);
	const char *b = PR_GetStringOfs(prinst, OFS_PARM1);

	if (prinst->callargc > 2)
	{
		int len = G_FLOAT(OFS_PARM2);
		int aofs = prinst->callargc>3?G_FLOAT(OFS_PARM3):0;
		int bofs = prinst->callargc>4?G_FLOAT(OFS_PARM4):0;

		if (VMUTF8)
		{
			aofs = aofs?unicode_byteofsfromcharofs(a, aofs, VMUTF8MARKUP):0;
			bofs = bofs?unicode_byteofsfromcharofs(b, bofs, VMUTF8MARKUP):0;
			len = max(unicode_byteofsfromcharofs(a+aofs, len, VMUTF8MARKUP), unicode_byteofsfromcharofs(b+bofs, len, VMUTF8MARKUP));
		}
		else
		{
			if (aofs < 0 || (aofs && aofs > strlen(a)))
				aofs = strlen(a);
			if (bofs < 0 || (bofs && bofs > strlen(b)))
				bofs = strlen(b);
		}

		G_FLOAT(OFS_RETURN) = Q_strncasecmp(a+aofs, b+bofs, len);
	}
	else
		G_FLOAT(OFS_RETURN) = Q_strcasecmp(a, b);
}

//FTE_STRINGS
//C style strncmp (compare first n characters - case sensitive. Note that there is no strcmp provided)
void QCBUILTIN PF_strncmp (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *a = PR_GetStringOfs(prinst, OFS_PARM0);
	const char *b = PR_GetStringOfs(prinst, OFS_PARM1);

	if (prinst->callargc > 2)
	{
		int len = G_FLOAT(OFS_PARM2);
		int aofs = prinst->callargc>3?G_FLOAT(OFS_PARM3):0;
		int bofs = prinst->callargc>4?G_FLOAT(OFS_PARM4):0;

		if (VMUTF8)
		{
			aofs = aofs?unicode_byteofsfromcharofs(a, aofs, VMUTF8MARKUP):0;
			bofs = bofs?unicode_byteofsfromcharofs(b, bofs, VMUTF8MARKUP):0;
			len = max(unicode_byteofsfromcharofs(a+aofs, len, VMUTF8MARKUP), unicode_byteofsfromcharofs(b+bofs, len, VMUTF8MARKUP));
		}
		else
		{
			if (aofs < 0 || (aofs && aofs > strlen(a)))
				aofs = strlen(a);
			if (bofs < 0 || (bofs && bofs > strlen(b)))
				bofs = strlen(b);
		}

		G_FLOAT(OFS_RETURN) = Q_strncmp(a + aofs, b, len);
	}
	else
		G_FLOAT(OFS_RETURN) = Q_strcmp(a, b);
}

//uses qw style \key\value strings
void QCBUILTIN PF_infoget (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *info = PR_GetStringOfs(prinst, OFS_PARM0);
	const char *key = PR_GetStringOfs(prinst, OFS_PARM1);

	key = Info_ValueForKey(info, key);

	RETURN_TSTRING(key);
}

//uses qw style \key\value strings
void QCBUILTIN PF_infoadd (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *info = PR_GetStringOfs(prinst, OFS_PARM0);
	const char *key = PR_GetStringOfs(prinst, OFS_PARM1);
	const char *value = PF_VarString(prinst, 2, pr_globals);
	char temp[8192];

	Q_strncpyz(temp, info, MAXTEMPBUFFERLEN);

	Info_SetValueForStarKey(temp, key, value, MAXTEMPBUFFERLEN);

	RETURN_TSTRING(temp);
}

//string(float pad, string str1, ...) strpad
void QCBUILTIN PF_strpad (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	char destbuf[4096];
	char *dest = destbuf;
	int pad = G_FLOAT(OFS_PARM0);
	char *src = PF_VarString(prinst, 1, pr_globals);

	//UTF-8-FIXME: pad is chars not bytes...

	if (pad < 0)
	{	//pad left
		pad = -pad - strlen(src);
		if (pad>=sizeof(destbuf))
			pad = sizeof(destbuf)-1;
		if (pad < 0)
			pad = 0;

		Q_strncpyz(dest+pad, src, sizeof(destbuf)-pad);
		while(pad)
		{
			dest[--pad] = ' ';
		}
	}
	else
	{	//pad right
		if (pad>=sizeof(destbuf))
			pad = sizeof(destbuf)-1;
		pad -= strlen(src);
		if (pad < 0)
			pad = 0;

		Q_strncpyz(dest, src, sizeof(destbuf));
		dest+=strlen(dest);

		while(pad-->0)
			*dest++ = ' ';
		*dest = '\0';
	}

	RETURN_TSTRING(destbuf);
}

void QCBUILTIN PF_strtrim (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *str = PR_GetStringOfs(prinst, OFS_PARM0);
	const char *end;
	char *news;
	
	//figure out the new start
	while (*str == ' ' || *str == '\t' || *str == '\n' || *str == '\r')
		str++;

	//figure out the new end.
	end = str + strlen(str);
	while(end > str && (end[-1] == ' ' || end[-1] == '\t' || end[-1] == '\n' || end[-1] == '\r'))
		end--;

	//copy that substring into a tempstring.
	((int *)pr_globals)[OFS_RETURN] = prinst->AllocTempString(prinst, &news, end - str + 1);
	memcpy(news, str, end-str);
	news[end-str] = 0;
}

//part of PF_strconv
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;
}
//part of PF_strconv
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;
}
//part of PF_strconv
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;
}
//FTE_STRINGS
//bulk convert a string. change case or colouring.
void QCBUILTIN PF_strconv (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int ccase = G_FLOAT(OFS_PARM0);		//0 same, 1 lower, 2 upper
	int redalpha = G_FLOAT(OFS_PARM1);	//0 same, 1 white, 2 red,  5 alternate, 6 alternate-alternate
	int rednum = G_FLOAT(OFS_PARM2);	//0 same, 1 white, 2 red, 3 redspecial, 4 whitespecial, 5 alternate, 6 alternate-alternate
	unsigned char *string = PF_VarString(prinst, 3, pr_globals);
	int len = strlen(string);
	int i;
	unsigned char resbuf[8192];
	unsigned char *result = resbuf;

	//UTF-8-FIXME: cope with utf+^U etc

	if (len >= MAXTEMPBUFFERLEN)
		len = MAXTEMPBUFFERLEN-1;

	for (i = 0; i < len; i++, string++, result++)	//should this be done backwards?
	{
		if (*string >= '0' && *string <= '9')	//normal numbers...
			*result = chrconv_number(*string, '0', rednum);
		else if (*string >= '0'+128 && *string <= '9'+128)
			*result = chrconv_number(*string, '0'+128, rednum);
		else if (*string >= '0'+128-30 && *string <= '9'+128-30)
			*result = chrconv_number(*string, '0'+128-30, rednum);
		else if (*string >= '0'-30 && *string <= '9'-30)
			*result = chrconv_number(*string, '0'-30, rednum);

		else if (*string >= 'a' && *string <= 'z')	//normal numbers...
			*result = chrchar_alpha(*string, 'a', 0, ccase, redalpha, i);
		else if (*string >= 'A' && *string <= 'Z')	//normal numbers...
			*result = chrchar_alpha(*string, 'A', 0, ccase, redalpha, i);
		else if (*string >= 'a'+128 && *string <= 'z'+128)	//normal numbers...
			*result = chrchar_alpha(*string, 'a', 128, ccase, redalpha, i);
		else if (*string >= 'A'+128 && *string <= 'Z'+128)	//normal numbers...
			*result = chrchar_alpha(*string, 'A', 128, ccase, redalpha, i);

		else if ((*string & 127) < 16 || !redalpha)	//special chars..
			*result = *string;
		else if (*string < 128)
			*result = chrconv_punct(*string, 0, redalpha);
		else
			*result = chrconv_punct(*string, 128, redalpha);
	}
	*result = '\0';

	RETURN_TSTRING(((char*)resbuf));
}

//FTE_STRINGS
//returns a string containing one character per parameter (up to the qc max params of 8).
void QCBUILTIN PF_chr2str (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int ch;
	int i;
	char string[128], *s = string;
	for (i = 0; i < prinst->callargc; i++)
	{
		ch = G_FLOAT(OFS_PARM0 + i*3);
		if (VMUTF8 || ch > 0xff)
			s += unicode_encode(s, ch, (string+sizeof(string)-1)-s, VMUTF8MARKUP||(ch>0xff));
		else
			*s++ = G_FLOAT(OFS_PARM0 + i*3);
	}
	*s++ = '\0';
	RETURN_TSTRING(string);
}

//FTE_STRINGS
//returns character at position X
void QCBUILTIN PF_str2chr (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int err;
	char *next;
	const char *instr = PR_GetStringOfs(prinst, OFS_PARM0);
	int ofs = (prinst->callargc>1)?G_FLOAT(OFS_PARM1):0;

	if (VMUTF8)
	{
		if (ofs < 0)
			ofs = unicode_charcount(instr, 1<<30, VMUTF8MARKUP)+ofs;
		ofs = unicode_byteofsfromcharofs(instr, ofs, VMUTF8MARKUP);
	}
	else
	{
		if (ofs < 0)
			ofs = strlen(instr)+ofs;
	}

	if (ofs && (ofs < 0 || ofs > strlen(instr)))
		G_FLOAT(OFS_RETURN) = '\0';
	else
	{
		if (VMUTF8)
			G_FLOAT(OFS_RETURN) = unicode_decode(&err, instr+ofs, &next, VMUTF8MARKUP);
		else
			G_FLOAT(OFS_RETURN) = (unsigned char)instr[ofs];
	}
}

//FTE_STRINGS
//strstr, without generating a new string. Use in conjunction with FRIK_FILE's substring for more similar strstr.
void QCBUILTIN PF_strstrofs (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *instr = PR_GetStringOfs(prinst, OFS_PARM0);
	const char *match = PR_GetStringOfs(prinst, OFS_PARM1);

	int firstofs = (prinst->callargc>2)?G_FLOAT(OFS_PARM2):0;

	if (VMUTF8)
		firstofs = unicode_byteofsfromcharofs(instr, firstofs, VMUTF8MARKUP);

	if (firstofs && (firstofs < 0 || firstofs > strlen(instr)))
	{
		G_FLOAT(OFS_RETURN) = -1;
		return;
	}

	match = strstr(instr+firstofs, match);
	if (!match)
		G_FLOAT(OFS_RETURN) = -1;
	else
		G_FLOAT(OFS_RETURN) = VMUTF8?unicode_charofsfrombyteofs(instr, match-instr, VMUTF8MARKUP):(match - instr);
}

//float(string input) stof
void QCBUILTIN PF_stof (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char	*s;

	s = PR_GetStringOfs(prinst, OFS_PARM0);

	G_FLOAT(OFS_RETURN) = atof(s);
}

//tstring(float input) ftos
void QCBUILTIN PF_ftos (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	float	v;
	char pr_string_temp[64];
	v = G_FLOAT(OFS_PARM0);

	if (v == (int)v)
		sprintf (pr_string_temp, "%d",(int)v);
	else if (pr_brokenfloatconvert.value)
		sprintf (pr_string_temp, "%5.1f",v);
	else
		Q_ftoa (pr_string_temp, v);
	RETURN_TSTRING(pr_string_temp);
}

void QCBUILTIN PF_ftoi (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_INT(OFS_RETURN) = G_FLOAT(OFS_PARM0);
}
void QCBUILTIN PF_itof (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = G_INT(OFS_PARM0);
}

//tstring(integer input) itos
void QCBUILTIN PF_itos (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int	v;
	char pr_string_temp[64];
	v = G_INT(OFS_PARM0);

	sprintf (pr_string_temp, "%d",v);
	RETURN_TSTRING(pr_string_temp);
}

//int(string input) stoi
void QCBUILTIN PF_stoi (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *input = PR_GetStringOfs(prinst, OFS_PARM0);

	G_INT(OFS_RETURN) = atoi(input);
}

//tstring(integer input) htos
void QCBUILTIN PF_htos (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int	v;
	char pr_string_temp[64];
	v = G_INT(OFS_PARM0);

	sprintf (pr_string_temp, "%08x",v);
	RETURN_TSTRING(pr_string_temp);
}

//int(string input) stoh
void QCBUILTIN PF_stoh (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *input = PR_GetStringOfs(prinst, OFS_PARM0);

	G_INT(OFS_RETURN) = strtoul(input, NULL, 16);
}

//vector(string s) stov = #117
//returns vector value from a string
void QCBUILTIN PF_stov (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int i;
	char *s;
	float *out;

	s = PF_VarString(prinst, 0, pr_globals);
	out = G_VECTOR(OFS_RETURN);
	out[0] = out[1] = out[2] = 0;

	if (*s == '\'')
		s++;

	for (i = 0; i < 3; i++)
	{
		while (*s == ' ' || *s == '\t')
			s++;
		out[i] = atof (s);
		if (!out[i] && *s != '-' && *s != '+' && (*s < '0' || *s > '9'))
			break; // not a number
		while (*s && *s != ' ' && *s !='\t' && *s != '\'')
			s++;
		if (*s == '\'')
			break;
	}
}

//tstring(vector input) vtos
void QCBUILTIN PF_vtos (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	char pr_string_temp[64];
	//sprintf (pr_string_temp, "'%5.1f %5.1f %5.1f'", G_VECTOR(OFS_PARM0)[0], G_VECTOR(OFS_PARM0)[1], G_VECTOR(OFS_PARM0)[2]);
	sprintf (pr_string_temp, "'%f %f %f'", G_VECTOR(OFS_PARM0)[0], G_VECTOR(OFS_PARM0)[1], G_VECTOR(OFS_PARM0)[2]);
	RETURN_TSTRING(pr_string_temp);
}

void QCBUILTIN PF_Logarithm (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	//log2(v) = ln(v)/ln(2)
	double r;
	r = log(G_FLOAT(OFS_PARM0));
	if (prinst->callargc > 1)
		r /= log(G_FLOAT(OFS_PARM1));
	G_FLOAT(OFS_RETURN) = r;
}


void QCBUILTIN PF_strunzone(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
#ifdef QCGC
	//gc frees everything for us.
#else
	prinst->AddressableFree(prinst, prinst->stringtable + G_INT(OFS_PARM0));
#endif
}

void QCBUILTIN PF_strzone(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)	//frik_file
{
#ifdef QCGC
	//just allocate a tempstring instead, because we can.
	PF_strcat(prinst, pr_globals);
#else
	char *buf;
	int len = 0;
	const char *s[8];
	int l[8];
	int i;
	for (i = 0; i < prinst->callargc; i++)
	{
		s[i] = PR_GetStringOfs(prinst, OFS_PARM0+i*3);
		l[i] = strlen(s[i]);
		len += l[i];
	}
	len++; /*for the null*/

	buf = prinst->AddressableAlloc(prinst, len);
	if (!buf)
	{
		G_INT(OFS_RETURN) = 0;
		return;
	}
	G_INT(OFS_RETURN) = (char*)buf - prinst->stringtable;
	
	len = 0;
	for (i = 0; i < prinst->callargc; i++)
	{
		memcpy(buf, s[i], l[i]);
		buf += l[i];
	}
	*buf = '\0';
#endif
}

//string(string str1, string str2) strcat
void QCBUILTIN PF_strcat (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	char *buf;
	size_t len = 0;
	const char *s[8];
	int l[8];
	int i;
	for (i = 0; i < prinst->callargc; i++)
	{
		s[i] = PR_GetStringOfs(prinst, OFS_PARM0+i*3);
		l[i] = strlen(s[i]);
		len += l[i];
	}
	len++; /*for the null*/
	((int *)pr_globals)[OFS_RETURN] = prinst->AllocTempString(prinst, &buf, len);
	if (buf)
	{
		len = 0;
		for (i = 0; i < prinst->callargc; i++)
		{
			memcpy(buf, s[i], l[i]);
			buf += l[i];
		}
		*buf = '\0';
	}
}

//returns a section of a string as a tempstring
void QCBUILTIN PF_substring (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int start, length, slen;
	const char *s;
	char *string;

	s = PR_GetStringOfs(prinst, OFS_PARM0);
	start = G_FLOAT(OFS_PARM1);
	length = G_FLOAT(OFS_PARM2);

	//UTF-8-FIXME: start+length are chars not bytes...

	if (VMUTF8)
		slen = unicode_charcount(s, 1<<30, VMUTF8MARKUP);
	else
		slen = strlen(s);

	if (start < 0)
		start = slen+start;
	if (length < 0)
		length = slen-start+(length+1);
	if (start < 0)
	{
	//	length += start;
		start = 0;
	}

	if (start >= slen || length<=0)
	{
		RETURN_TSTRING("");
		return;
	}

	slen -= start;
	if (length > slen)
		length = slen;

	if (VMUTF8)
	{
		start = unicode_byteofsfromcharofs(s, start, VMUTF8MARKUP);
		length = unicode_byteofsfromcharofs(s+start, length, VMUTF8MARKUP);
	}
	s += start;

	((int *)pr_globals)[OFS_RETURN] = prinst->AllocTempString(prinst, &string, length+1);

	memcpy(string, s, length);
	string[length] = '\0';
}

void QCBUILTIN PF_strlen(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	if (VMUTF8)
		G_FLOAT(OFS_RETURN) = unicode_charcount(PR_GetStringOfs(prinst, OFS_PARM0), 1<<30, VMUTF8MARKUP);
	else
		G_FLOAT(OFS_RETURN) = strlen(PR_GetStringOfs(prinst, OFS_PARM0));
}

//float(string input, string token) instr
void QCBUILTIN PF_instr (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *sub;
	const char *s1;
	const char *s2;

	s1 = PR_GetStringOfs(prinst, OFS_PARM0);
	s2 = PF_VarString(prinst, 1, pr_globals);

	if (!s1 || !s2)
	{
		PR_BIError(prinst, "Null string in \"instr\"\n");
		return;
	}

	sub = strstr(s1, s2);

	if (sub == NULL)
		G_INT(OFS_RETURN) = 0;
	else
		RETURN_SSTRING(sub);	//last as long as the original string
}

void QCBUILTIN PF_strreplace (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	char resultbuf[4096];
	char *result = resultbuf;
	const char *search = PR_GetStringOfs(prinst, OFS_PARM0);
	const char *replace = PR_GetStringOfs(prinst, OFS_PARM1);
	const char *subject = PR_GetStringOfs(prinst, OFS_PARM2);
	int searchlen = strlen(search);
	int replacelen = strlen(replace);

	if (searchlen)
	{
		while (*subject && result < resultbuf + sizeof(resultbuf) - replacelen - 2)
		{
			if (!strncmp(subject, search, searchlen))
			{
				subject += searchlen;
				memcpy(result, replace, replacelen);
				result += replacelen;
			}
			else
				*result++ = *subject++;
		}
		*result = 0;
		RETURN_TSTRING(resultbuf);
	}
	else
		RETURN_TSTRING(subject);
}
void QCBUILTIN PF_strireplace (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	char resultbuf[4096];
	char *result = resultbuf;
	const char *search = PR_GetStringOfs(prinst, OFS_PARM0);
	const char *replace = PR_GetStringOfs(prinst, OFS_PARM1);
	const char *subject = PR_GetStringOfs(prinst, OFS_PARM2);
	int searchlen = strlen(search);
	int replacelen = strlen(replace);

	if (searchlen)
	{
		while (*subject && result < resultbuf + sizeof(resultbuf) - replacelen - 2)
		{
			//UTF-8-FIXME: case insensitivity is awkward...
			if (!strnicmp(subject, search, searchlen))
			{
				subject += searchlen;
				memcpy(result, replace, replacelen);
				result += replacelen;
			}
			else
				*result++ = *subject++;
		}
		*result = 0;
		RETURN_TSTRING(resultbuf);
	}
	else
		RETURN_TSTRING(subject);
}

//string(entity ent) etos = #65
void QCBUILTIN PF_etos (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	char s[64];
	snprintf (s, sizeof(s), "entity %i", G_EDICTNUM(prinst, OFS_PARM0));
	RETURN_TSTRING(s);
}

//DP_QC_STRINGCOLORFUNCTIONS
// #476 float(string s) strlennocol - returns how many characters are in a string, minus color codes
void QCBUILTIN PF_strlennocol (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *in = PR_GetStringOfs(prinst, OFS_PARM0);
	char result[8192];
	conchar_t flagged[8192];
	unsigned int len = 0;
	COM_ParseFunString(CON_WHITEMASK, in, flagged, sizeof(flagged), false);
	COM_DeFunString(flagged, NULL, result, sizeof(result), true, false);

	for (len = 0; result[len]; len++)
		;
	G_FLOAT(OFS_RETURN) = len;
}

//DP_QC_STRINGCOLORFUNCTIONS
// string (string s) strdecolorize - returns the passed in string with color codes stripped
void QCBUILTIN PF_strdecolorize (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *in = PR_GetStringOfs(prinst, OFS_PARM0);
	char result[8192];
	conchar_t flagged[8192];
	COM_ParseFunString(CON_WHITEMASK, in, flagged, sizeof(flagged), false);
	COM_DeFunString(flagged, NULL, result, sizeof(result), true, false);

	RETURN_TSTRING(result);
}

//DP_QC_STRING_CASE_FUNCTIONS
void QCBUILTIN PF_strtolower (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *in = PR_GetStringOfs(prinst, OFS_PARM0);
	char result[8192];

	unicode_strtolower(in, result, sizeof(result), VMUTF8MARKUP);

	RETURN_TSTRING(result);
}

//DP_QC_STRING_CASE_FUNCTIONS
void QCBUILTIN PF_strtoupper (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *in = PR_GetStringOfs(prinst, OFS_PARM0);
	char result[8192];

	unicode_strtoupper(in, result, sizeof(result), VMUTF8MARKUP);

	RETURN_TSTRING(result);
}

//DP_QC_STRFTIME
void QCBUILTIN PF_strftime (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	char *in = PF_VarString(prinst, 1, pr_globals);
	char result[8192];
	char uresult[8192];

	time_t ctime;
	struct tm *tm;

	ctime = time(NULL);

	if (G_FLOAT(OFS_PARM0))
		tm = localtime(&ctime);
	else
		tm = gmtime(&ctime);

	//msvc sucks.
	if (!strcmp(in, "%R"))
		in = "%H:%M";
	else if (!strcmp(in, "%F"))
		in = "%Y-%m-%d";

	strftime(result, sizeof(result), in, tm);
	unicode_strtoupper(result, uresult, sizeof(uresult), VMUTF8MARKUP);

	RETURN_TSTRING(uresult);
}

//String functions
////////////////////////////////////////////////////
//515's String functions

struct strbuf {
	pubprogfuncs_t *prinst;
	char **strings;
	int used;
	int allocated;
};

#define BUFSTRBASE 1
#define NUMSTRINGBUFS 64
struct strbuf strbuflist[NUMSTRINGBUFS];

void PF_buf_shutdown(pubprogfuncs_t *prinst)
{
	int i, bufno;

	for (bufno = 0; bufno < NUMSTRINGBUFS; bufno++)
	{
		if (strbuflist[bufno].prinst == prinst)
		{
			for (i = 0; i < strbuflist[bufno].used; i++)
				Z_Free(strbuflist[bufno].strings[i]);
			Z_Free(strbuflist[bufno].strings);

			strbuflist[bufno].strings = NULL;
			strbuflist[bufno].used = 0;
			strbuflist[bufno].allocated = 0;

			strbuflist[bufno].prinst = NULL;
		}
	}
}

// #440 float() buf_create (DP_QC_STRINGBUFFERS)
void QCBUILTIN PF_buf_create  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int i;

	const char *type = ((prinst->callargc>0)?PR_GetStringOfs(prinst, OFS_PARM0):"string");
//	unsigned int flags = ((prinst->callargc>1)?G_FLOAT(OFS_PARM1):1);

	if (!Q_strcasecmp(type, "string"))
		;
	else
	{
		G_FLOAT(OFS_RETURN) = -1;
		return;
	}

	//flags&1 == saved. apparently.

	for (i = 0; i < NUMSTRINGBUFS; i++)
	{
		if (!strbuflist[i].prinst)
		{
			strbuflist[i].prinst = prinst;
			strbuflist[i].used = 0;
			strbuflist[i].allocated = 0;
			strbuflist[i].strings = NULL;
			G_FLOAT(OFS_RETURN) = i+BUFSTRBASE;
			return;
		}
	}
	G_FLOAT(OFS_RETURN) = -1;
}
// #441 void(float bufhandle) buf_del (DP_QC_STRINGBUFFERS)
void QCBUILTIN PF_buf_del  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int i;
	int bufno = G_FLOAT(OFS_PARM0)-BUFSTRBASE;

	if ((unsigned int)bufno >= NUMSTRINGBUFS)
		return;
	if (strbuflist[bufno].prinst != prinst)
		return;

	for (i = 0; i < strbuflist[bufno].used; i++)
		Z_Free(strbuflist[bufno].strings[i]);
	Z_Free(strbuflist[bufno].strings);

	strbuflist[bufno].strings = NULL;
	strbuflist[bufno].used = 0;
	strbuflist[bufno].allocated = 0;

	strbuflist[bufno].prinst = NULL;
}
// #442 float(float bufhandle) buf_getsize (DP_QC_STRINGBUFFERS)
void QCBUILTIN PF_buf_getsize  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int bufno = G_FLOAT(OFS_PARM0)-BUFSTRBASE;

	if ((unsigned int)bufno >= NUMSTRINGBUFS)
		return;
	if (strbuflist[bufno].prinst != prinst)
		return;

	G_FLOAT(OFS_RETURN) = strbuflist[bufno].used;
}
// #443 void(float bufhandle_from, float bufhandle_to) buf_copy (DP_QC_STRINGBUFFERS)
void QCBUILTIN PF_buf_copy  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int buffrom = G_FLOAT(OFS_PARM0)-BUFSTRBASE;
	int bufto = G_FLOAT(OFS_PARM1)-BUFSTRBASE;
	int i;

	if (bufto == buffrom)	//err...
		return;
	if ((unsigned int)buffrom >= NUMSTRINGBUFS)
		return;
	if (strbuflist[buffrom].prinst != prinst)
		return;
	if ((unsigned int)bufto >= NUMSTRINGBUFS)
		return;
	if (strbuflist[bufto].prinst != prinst)
		return;

	//obliterate any and all existing data.
	for (i = 0; i < strbuflist[bufto].used; i++)
		Z_Free(strbuflist[bufto].strings[i]);
	Z_Free(strbuflist[bufto].strings);

	//copy new data over.
	strbuflist[bufto].used = strbuflist[bufto].allocated = strbuflist[buffrom].used;
	strbuflist[bufto].strings = BZ_Malloc(strbuflist[buffrom].used * sizeof(char*));
	for (i = 0; i < strbuflist[buffrom].used; i++)
		strbuflist[bufto].strings[i] = strbuflist[buffrom].strings[i]?Z_StrDup(strbuflist[buffrom].strings[i]):NULL;
}
static int PF_buf_sort_sortprefixlen;
static int QDECL PF_buf_sort_ascending(const void *a, const void *b)
{
	return strncmp(*(char**)a, *(char**)b, PF_buf_sort_sortprefixlen);
}
static int QDECL PF_buf_sort_descending(const void *b, const void *a)
{
	return strncmp(*(char**)a, *(char**)b, PF_buf_sort_sortprefixlen);
}
// #444 void(float bufhandle, float sortprefixlen, float backward) buf_sort (DP_QC_STRINGBUFFERS)
void QCBUILTIN PF_buf_sort  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int bufno = G_FLOAT(OFS_PARM0)-BUFSTRBASE;
	int sortprefixlen = G_FLOAT(OFS_PARM1);
	int backwards = G_FLOAT(OFS_PARM2);
	int s,d;
	char **strings;

	if ((unsigned int)bufno >= NUMSTRINGBUFS)
		return;
	if (strbuflist[bufno].prinst != prinst)
		return;

	if (sortprefixlen <= 0)
		sortprefixlen = 0x7fffffff;

	//take out the nulls first, to avoid weird/crashy sorting
	for (s = 0, d = 0, strings = strbuflist[bufno].strings; s < strbuflist[bufno].used; )
	{
		if (!strings[s])
		{
			s++;
			continue;
		}
		strings[d++] = strings[s++];
	}
	strbuflist[bufno].used = d;

	//no nulls now, sort it.
	PF_buf_sort_sortprefixlen = sortprefixlen;	//eww, a global. burn in hell.
	if (backwards)	//z first
		qsort(strings, strbuflist[bufno].used, sizeof(char*), PF_buf_sort_descending);
	else	//a first
		qsort(strings, strbuflist[bufno].used, sizeof(char*), PF_buf_sort_ascending);
}
// #445 string(float bufhandle, string glue) buf_implode (DP_QC_STRINGBUFFERS)
void QCBUILTIN PF_buf_implode  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int bufno = G_FLOAT(OFS_PARM0)-BUFSTRBASE;
	const char *glue = PR_GetStringOfs(prinst, OFS_PARM1);
	unsigned int gluelen = strlen(glue);
	unsigned int retlen, l, i;
	char **strings;
	char *ret;

	if ((unsigned int)bufno >= NUMSTRINGBUFS)
		return;
	if (strbuflist[bufno].prinst != prinst)
		return;

	//count neededlength
	strings = strbuflist[bufno].strings;
	for (i = 0, retlen = 0; i < strbuflist[bufno].used; i++)
	{
		if (strings[i])
		{
			if (retlen)
				retlen += gluelen;
			retlen += strlen(strings[i]);
		}
	}

	//generate the output
	ret = malloc(retlen+1);
	for (i = 0, retlen = 0; i < strbuflist[bufno].used; i++)
	{
		if (strings[i])
		{
			if (retlen)
			{
				memcpy(ret+retlen, glue, gluelen);
				retlen += gluelen;
			}
			l = strlen(strings[i]);
			memcpy(ret+retlen, strings[i], l);
			retlen += l;
		}
	}

	//add the null and return
	ret[retlen] = 0;
	RETURN_TSTRING(ret);
	free(ret);
}
// #446 string(float bufhandle, float string_index) bufstr_get (DP_QC_STRINGBUFFERS)
void QCBUILTIN PF_bufstr_get  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int bufno = G_FLOAT(OFS_PARM0)-BUFSTRBASE;
	int index = G_FLOAT(OFS_PARM1);

	if ((unsigned int)bufno >= NUMSTRINGBUFS)
	{
		RETURN_CSTRING("");
		return;
	}
	if (strbuflist[bufno].prinst != prinst)
	{
		RETURN_CSTRING("");
		return;
	}

	if (index >= strbuflist[bufno].used)
	{
		RETURN_CSTRING("");
		return;
	}

	RETURN_TSTRING(strbuflist[bufno].strings[index]);
}
// #447 void(float bufhandle, float string_index, string str) bufstr_set (DP_QC_STRINGBUFFERS)
void QCBUILTIN PF_bufstr_set  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int bufno = G_FLOAT(OFS_PARM0)-BUFSTRBASE;
	int index = G_FLOAT(OFS_PARM1);
	const char *string = PR_GetStringOfs(prinst, OFS_PARM2);
	int oldcount;

	if ((unsigned int)bufno >= NUMSTRINGBUFS)
		return;
	if (strbuflist[bufno].prinst != prinst)
		return;

	if (index >= strbuflist[bufno].allocated)
	{
		oldcount = strbuflist[bufno].allocated;
		strbuflist[bufno].allocated = (index + 256);
		strbuflist[bufno].strings = BZ_Realloc(strbuflist[bufno].strings, strbuflist[bufno].allocated*sizeof(char*));
		memset(strbuflist[bufno].strings+oldcount, 0, (strbuflist[bufno].allocated - oldcount) * sizeof(char*));
	}
	if (strbuflist[bufno].strings[index])
		Z_Free(strbuflist[bufno].strings[index]);
	strbuflist[bufno].strings[index] = Z_Malloc(strlen(string)+1);
	strcpy(strbuflist[bufno].strings[index], string);

	if (index >= strbuflist[bufno].used)
		strbuflist[bufno].used = index+1;
}

int PF_bufstr_add_internal(int bufno, const char *string, int appendonend)
{
	int index;
	if (appendonend)
	{
		//add on end
		index = strbuflist[bufno].used;
	}
	else
	{
		//find a hole
		for (index = 0; index < strbuflist[bufno].used; index++)
			if (!strbuflist[bufno].strings[index])
				break;
	}

	//expand it if needed
	if (index >= strbuflist[bufno].allocated)
	{
		int oldcount;
		oldcount = strbuflist[bufno].allocated;
		strbuflist[bufno].allocated = (index + 256);
		strbuflist[bufno].strings = BZ_Realloc(strbuflist[bufno].strings, strbuflist[bufno].allocated*sizeof(char*));
		memset(strbuflist[bufno].strings+oldcount, 0, (strbuflist[bufno].allocated - oldcount) * sizeof(char*));
	}

	//add in the new string.
	if (strbuflist[bufno].strings[index])
		Z_Free(strbuflist[bufno].strings[index]);
	strbuflist[bufno].strings[index] = Z_Malloc(strlen(string)+1);
	strcpy(strbuflist[bufno].strings[index], string);

	if (index >= strbuflist[bufno].used)
		strbuflist[bufno].used = index+1;

	return index;
}

// #448 float(float bufhandle, string str, float order) bufstr_add (DP_QC_STRINGBUFFERS)
void QCBUILTIN PF_bufstr_add  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int bufno = G_FLOAT(OFS_PARM0)-BUFSTRBASE;
	const char *string = PR_GetStringOfs(prinst, OFS_PARM1);
	int order = G_FLOAT(OFS_PARM2);

	if ((unsigned int)bufno >= NUMSTRINGBUFS)
		return;
	if (strbuflist[bufno].prinst != prinst)
		return;

	G_FLOAT(OFS_RETURN) = PF_bufstr_add_internal(bufno, string, order);
}
// #449 void(float bufhandle, float string_index) bufstr_free (DP_QC_STRINGBUFFERS)
void QCBUILTIN PF_bufstr_free  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int bufno = G_FLOAT(OFS_PARM0)-BUFSTRBASE;
	int index = G_FLOAT(OFS_PARM1);

	if ((unsigned int)bufno >= NUMSTRINGBUFS)
		return;
	if (strbuflist[bufno].prinst != prinst)
		return;

	if (index >= strbuflist[bufno].used)
		return;	//not valid anyway.

	if (strbuflist[bufno].strings[index])
		Z_Free(strbuflist[bufno].strings[index]);
	strbuflist[bufno].strings[index] = NULL;
}

void QCBUILTIN PF_buf_cvarlist  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int bufno = G_FLOAT(OFS_PARM0)-BUFSTRBASE;
	const char *pattern = PR_GetStringOfs(prinst, OFS_PARM1);
	const char *antipattern = PR_GetStringOfs(prinst, OFS_PARM2);
	int i;
	cvar_group_t	*grp;
	cvar_t	*var;
	extern cvar_group_t *cvar_groups;

	if ((unsigned int)bufno >= NUMSTRINGBUFS)
		return;
	if (strbuflist[bufno].prinst != prinst)
		return;

	//obliterate any and all existing data.
	for (i = 0; i < strbuflist[bufno].used; i++)
		Z_Free(strbuflist[bufno].strings[i]);
	Z_Free(strbuflist[bufno].strings);
	strbuflist[bufno].used = strbuflist[bufno].allocated = 0;

	//ignore name2, no point listing it twice.
	for (grp=cvar_groups ; grp ; grp=grp->next)
		for (var=grp->cvars ; var ; var=var->next)
		{
			if (pattern && wildcmp(pattern, var->name))
				continue;
			if (antipattern && !wildcmp(antipattern, var->name))
				continue;

			PF_bufstr_add_internal(bufno, var->name, true);
		}
}

//directly reads a file into a stringbuffer
void QCBUILTIN PF_buf_loadfile  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *fname = PR_GetStringOfs(prinst, OFS_PARM0);
	int bufno = G_FLOAT(OFS_PARM1)-BUFSTRBASE;
	vfsfile_t *file;
	char line[8192];
	const char *fallback;

	G_FLOAT(OFS_RETURN) = 0;

	if ((unsigned int)bufno >= NUMSTRINGBUFS)
		return;
	if (strbuflist[bufno].prinst != prinst)
		return;

	if (!QC_FixFileName(fname, &fname, &fallback))
	{
		Con_Printf("qcfopen: Access denied: %s\n", fname);
		return;
	}

	file = FS_OpenVFS(fname, "rb", FS_GAME);
	if (!file && fallback)
		file = FS_OpenVFS(fallback, "rb", FS_GAME);
	if (!file)
		return;

	while(VFS_GETS(file, line, sizeof(line)))
	{
		PF_bufstr_add_internal(bufno, line, true);
	}
	VFS_CLOSE(file);

	G_FLOAT(OFS_RETURN) = 1;
}

void QCBUILTIN PF_buf_writefile  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int fnum = G_FLOAT(OFS_PARM0) - FIRST_QC_FILE_INDEX;
	int bufno = G_FLOAT(OFS_PARM1)-BUFSTRBASE;
	char **strings;
	int idx, midx;

	G_FLOAT(OFS_RETURN) = 0;

	if ((unsigned int)bufno >= (unsigned int)NUMSTRINGBUFS)
		return;
	if (strbuflist[bufno].prinst != prinst)
		return;

	if ((unsigned int)fnum >= (unsigned int)MAX_QC_FILES)
		return;
	if (pf_fopen_files[fnum].prinst != prinst)
		return;

	if (prinst->callargc >= 3)
		idx = G_FLOAT(OFS_PARM2);
	else
		idx = 0;
	if (prinst->callargc >= 4)
		midx = idx + G_FLOAT(OFS_PARM3);
	else
		midx = strbuflist[bufno].used - idx;
	idx = bound(0, idx, strbuflist[bufno].used);
	midx = min(midx, strbuflist[bufno].used);
	for(strings = strbuflist[bufno].strings; idx < midx; idx++)
	{
		if (strings[idx])
		{
			PF_fwrite_internal (prinst, fnum, strings[idx], strlen(strings[idx]));
			PF_fwrite_internal (prinst, fnum, "\n", 1);
		}
	}
	G_FLOAT(OFS_RETURN) = 1;
}

//515's String functions
////////////////////////////////////////////////////

//float(float caseinsensitive, string s, ...) crc16 = #494 (DP_QC_CRC16)
void QCBUILTIN PF_crc16 (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int insens = G_FLOAT(OFS_PARM0);
	char *str = PF_VarString(prinst, 1, pr_globals);
	int len = strlen(str);

	if (insens)
		G_FLOAT(OFS_RETURN) = QCRC_Block_AsLower(str, len);	
	else
		G_FLOAT(OFS_RETURN) = QCRC_Block(str, len);
}

void QCBUILTIN PF_digest_hex (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *hashtype = PR_GetStringOfs(prinst, OFS_PARM0);
	const char *str = PF_VarString(prinst, 1, pr_globals);
	int digestsize, i;
	unsigned char digest[64];
	unsigned char hexdig[sizeof(digest)*2+1];

	if (!strcmp(hashtype, "MD4"))
	{
		digestsize = 16;
		Com_BlockFullChecksum(str, strlen(str), digest);
	}
	else if (!strcmp(hashtype, "SHA1"))
	{
		digestsize = SHA1(digest, sizeof(digest), str, strlen(str));
	}
	else if (!strcmp(hashtype, "CRC16"))
	{
		digestsize = 2;
		*(unsigned short*)digest = QCRC_Block(str, strlen(str));
	}
	else
		digestsize = 0;

	if (digestsize)
	{
		for (i = 0; i < digestsize; i++)
		{
			const char *hex = "0123456789abcdef";
			hexdig[i*2+0] = hex[digest[i]>>4];
			hexdig[i*2+1] = hex[digest[i]&0xf];
		}
		hexdig[i*2] = 0;
		RETURN_TSTRING(hexdig);
	}
	else
		G_INT(OFS_RETURN) = 0;
}

// #510 string(string in) uri_escape = #510;
void QCBUILTIN PF_uri_escape  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	static const char *hex = "0123456789ABCDEF";

	unsigned char result[8192];
	unsigned char *o = result;
	const unsigned char *s = PR_GetStringOfs(prinst, OFS_PARM0);
	*result = 0;
	while (*s && o < result+sizeof(result)-4)
	{
		if ((*s >= 'a' && *s <= 'z') || (*s >= 'A' && *s <= 'Z') || (*s >= '0' && *s <= '9')
				|| *s == '.' || *s == '-' || *s == '_')
			*o++ = *s++;
		else
		{
			*o++ = '%';
			*o++ = hex[*s>>4];
			*o++ = hex[*s&0xf];
			s++;
		}
	}
	*o = 0;
	RETURN_TSTRING(result);
}

// #511 string(string in) uri_unescape = #511;
void QCBUILTIN PF_uri_unescape  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned char *s = (unsigned char*)PR_GetStringOfs(prinst, OFS_PARM0);
	unsigned char resultbuf[8192];
	unsigned char *i, *o;
	unsigned char hex;
	i = s; o = resultbuf;
	while (*i && o < resultbuf+sizeof(resultbuf)-2)
	{
		if (*i == '%')
		{
			hex = 0;
			if (i[1] >= 'A' && i[1] <= 'F')
				hex += i[1]-'A'+10;
			else if (i[1] >= 'a' && i[1] <= 'f')
				hex += i[1]-'a'+10;
			else if (i[1] >= '0' && i[1] <= '9')
				hex += i[1]-'0';
			else
			{
				*o++ = *i++;
				continue;
			}
			hex <<= 4;
			if (i[2] >= 'A' && i[2] <= 'F')
				hex += i[2]-'A'+10;
			else if (i[2] >= 'a' && i[2] <= 'f')
				hex += i[2]-'a'+10;
			else if (i[2] >= '0' && i[2] <= '9')
				hex += i[2]-'0';
			else
			{
				*o++ = *i++;
				continue;
			}
			*o++ = hex;
			i += 3;
		}
		else
			*o++ = *i++;
	}
	*o = 0;
	RETURN_TSTRING(resultbuf);
}

#ifdef WEBCLIENT
static void PR_uri_get_callback(struct dl_download *dl)
{
	world_t *w = dl->user_ctx;
	pubprogfuncs_t *prinst = w->progs;
	float id = dl->user_float;
	int selfnum = dl->user_num;
	func_t func;

	if (!prinst || dl->user_sequence != svs.spawncount)
		return;
	
	func = PR_FindFunction(prinst, "URI_Get_Callback", PR_ANY);
	if (!func)
		Con_Printf("URI_Get_Callback missing\n");
	else if (func)
	{
		int len;
		char *buffer;
		struct globalvars_s *pr_globals = PR_globals(prinst, PR_CURRENT);

		*w->g.self = selfnum;
		G_FLOAT(OFS_PARM0) = id;
		G_FLOAT(OFS_PARM1) = (dl->replycode!=200)?dl->replycode:0;	//for compat with DP, we change any 200s to 0.
		G_INT(OFS_PARM2) = 0;

		if (dl->file)
		{
			len = VFS_GETLEN(dl->file);
			buffer = malloc(len+1);
			buffer[len] = 0;
			VFS_READ(dl->file, buffer, len);
			G_INT(OFS_PARM2) = PR_TempString(prinst, buffer);
			free(buffer);
		}

		PR_ExecuteProgram(prinst, func);
	}
}
#endif

// 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
//float(string uril, float id) uri_get = #513;
void QCBUILTIN PF_uri_get  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
#ifndef WEBCLIENT
	Con_Printf("uri_get is not implemented in this build\n");
	G_FLOAT(OFS_RETURN) = 0;
#else
	world_t *w = prinst->parms->user;
	struct dl_download *dl;

	const unsigned char *url = PR_GetStringOfs(prinst, OFS_PARM0);
	float id = G_FLOAT(OFS_PARM1);
	const char *mimetype = (prinst->callargc >= 3)?PR_GetStringOfs(prinst, OFS_PARM2):"";
	const char *dataorsep = (prinst->callargc >= 4)?PR_GetStringOfs(prinst, OFS_PARM3):"";
	int strbufid = (prinst->callargc >= 5)?G_FLOAT(OFS_PARM4):0;
	//float cryptokey = (prinst->callargc >= 5)?G_FLOAT(OFS_PARM5):0;	//DP feature, not supported in FTE.

	if (!pr_enable_uriget.ival)
	{
		Con_Printf("PF_uri_get(\"%s\",%g): %s disabled\n", url, id, pr_enable_uriget.name);
		G_FLOAT(OFS_RETURN) = 0;
		return;
	}

	if (HTTP_CL_GetActiveDownloads() > 32)
	{
		//don't spam. I don't like it when you spam.
		Con_Printf("PF_uri_get(\"%s\",%g): too many pending downloads\n", url, id);
		G_FLOAT(OFS_RETURN) = 0;
		return;
	}

	if (*mimetype)
	{
		const char *data;
		Con_DPrintf("PF_uri_post(%s,%g)\n", url, id);
		if (strbufid)
		{
			//convert the string buffer into a simple string using dataorsep as a separator
			//not supported at this time
			dl = NULL;
			Con_DPrintf("PF_uri_post: stringbuffers not supported\n");
		}
		else
		{
			//simple data post.
			data = dataorsep;
			dl = HTTP_CL_Put(url, mimetype, data, strlen(data), PR_uri_get_callback);
		}
	}
	else
	{
		Con_DPrintf("PF_uri_get(%s,%g)\n", url, id);
		dl = HTTP_CL_Get(url, NULL, PR_uri_get_callback);
	}
	if (dl)
	{
		dl->user_ctx = w;
		dl->user_float = id;
		dl->user_num = *w->g.self;
		dl->user_sequence = svs.spawncount;
		dl->isquery = true;

#ifdef MULTITHREAD
		DL_CreateThread(dl, NULL, NULL);
#endif
		G_FLOAT(OFS_RETURN) = 1;
	}
	else
		G_FLOAT(OFS_RETURN) = 0;
#endif
}
void QCBUILTIN PF_netaddress_resolve(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *address = PR_GetStringOfs(prinst, OFS_PARM0);
	int defaultport = (prinst->callargc > 1)?G_FLOAT(OFS_PARM1):0;
	netadr_t adr;
	char result[256];
	if (NET_StringToAdr(address, defaultport, &adr))
		RETURN_TSTRING(NET_AdrToString (result, sizeof(result), &adr));
	else
		RETURN_TSTRING("");
}

////////////////////////////////////////////////////
//Console functions

#define MAXQCTOKENS 64
static struct {
	char *token;
	unsigned int start;
	unsigned int end;
} qctoken[MAXQCTOKENS];
unsigned int qctoken_count;

void tokenize_flush(void)
{
	while(qctoken_count > 0)
	{
		qctoken_count--;
		free(qctoken[qctoken_count].token);
	}
	qctoken_count = 0;
}

void QCBUILTIN PF_ArgC  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)				//85			//float() argc;
{
	G_FLOAT(OFS_RETURN) = qctoken_count;
}

int tokenizeqc(const char *str, qboolean dpfuckage)
{
	const char *start = str;
	while(qctoken_count > 0)
	{
		qctoken_count--;
		free(qctoken[qctoken_count].token);
	}
	qctoken_count = 0;
	while (qctoken_count < MAXQCTOKENS)
	{
		/*skip whitespace here so the token's start is accurate*/
		while (*str && *(unsigned char*)str <= ' ')
			str++;

		if (!*str)
			break;

		qctoken[qctoken_count].start = str - start;
		str = COM_StringParse (str, com_token, sizeof(com_token), false, dpfuckage);
		if (!str)
			break;

		qctoken[qctoken_count].token = strdup(com_token);

		qctoken[qctoken_count].end = str - start;
		qctoken_count++;
	}
	return qctoken_count;
}

/*KRIMZON_SV_PARSECLIENTCOMMAND added these two - note that for compatibility with DP, this tokenize builtin is veeery vauge and doesn't match the console*/
void QCBUILTIN PF_Tokenize  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)			//84			//void(string str) tokanize;
{
	G_FLOAT(OFS_RETURN) = tokenizeqc(PR_GetStringOfs(prinst, OFS_PARM0), true);
}

void QCBUILTIN PF_tokenize_console  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)			//84			//void(string str) tokanize;
{
	G_FLOAT(OFS_RETURN) = tokenizeqc(PR_GetStringOfs(prinst, OFS_PARM0), false);
}

void QCBUILTIN PF_tokenizebyseparator  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *str = PR_GetStringOfs(prinst, OFS_PARM0);
	const char *sep[7];
	int seplen[7];
	int seps = 0, s;
	const char *start = str;
	int tlen;
	qboolean found = true;

	while (seps < prinst->callargc - 1 && seps < 7)
	{
		sep[seps] = PR_GetStringOfs(prinst, OFS_PARM1 + seps*3);
		seplen[seps] = strlen(sep[seps]);
		seps++;
	}

	tokenize_flush();

	qctoken[qctoken_count].start = 0;
	if (*str)
	for(;;)
	{
		found = false;
		/*see if its a separator*/
		if (!*str)
		{
			qctoken[qctoken_count].end = str - start;
			found = true;
		}
		else
		{
			for (s = 0; s < seps; s++)
			{
				if (!strncmp(str, sep[s], seplen[s]))
				{
					qctoken[qctoken_count].end = str - start;
					str += seplen[s];
					found = true;
					break;
				}
			}
		}
		/*it was, split it out*/
		if (found)
		{
			tlen = qctoken[qctoken_count].end - qctoken[qctoken_count].start;
			qctoken[qctoken_count].token = malloc(tlen + 1);
			memcpy(qctoken[qctoken_count].token, start + qctoken[qctoken_count].start, tlen);
			qctoken[qctoken_count].token[tlen] = 0;

			qctoken_count++;

			if (*str && qctoken_count < MAXQCTOKENS)
				qctoken[qctoken_count].start = str - start;
			else
				break;
		}
		str++;
	}
	G_FLOAT(OFS_RETURN) = qctoken_count;
}

void QCBUILTIN PF_argv_start_index  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int idx = G_FLOAT(OFS_PARM0);

	/*negative indexes are relative to the end*/
	if (idx < 0)
		idx += qctoken_count;	

	if ((unsigned int)idx >= qctoken_count)
		G_FLOAT(OFS_RETURN) = -1;
	else
		G_FLOAT(OFS_RETURN) = qctoken[idx].start;
}

void QCBUILTIN PF_argv_end_index  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int idx = G_FLOAT(OFS_PARM0);

	/*negative indexes are relative to the end*/
	if (idx < 0)
		idx += qctoken_count;	

	if ((unsigned int)idx >= qctoken_count)
		G_FLOAT(OFS_RETURN) = -1;
	else
		G_FLOAT(OFS_RETURN) = qctoken[idx].end;
}

void QCBUILTIN PF_ArgV  (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)				//86			//string(float num) argv;
{
	int idx = G_FLOAT(OFS_PARM0);

	/*negative indexes are relative to the end*/
	if (idx < 0)
		idx += qctoken_count;

	if ((unsigned int)idx >= qctoken_count)
		G_INT(OFS_RETURN) = 0;
	else
		RETURN_TSTRING(qctoken[idx].token);
}

void QCBUILTIN PF_argescape(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	char temp[8192];
	const char *str = PR_GetStringOfs(prinst, OFS_PARM0);
	RETURN_TSTRING(COM_QuotedString(str, temp, sizeof(temp), false));
}

//Console functions
////////////////////////////////////////////////////
//Maths functions

void QCBUILTIN PF_random (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = (rand ()&0x7fff) / ((float)0x8000);
}

//float(float number, float quantity) bitshift = #218;
void QCBUILTIN PF_bitshift(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int bitmask;
	int shift;

	bitmask = G_FLOAT(OFS_PARM0);
	shift = G_FLOAT(OFS_PARM1);

	if (shift < 0)
		bitmask >>= -shift;
	else
		bitmask <<= shift;

	G_FLOAT(OFS_RETURN) = bitmask;
}

//float(float a, floats) min = #94
void QCBUILTIN PF_min (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int i;
	float f;

	if (prinst->callargc == 2)
	{
		G_FLOAT(OFS_RETURN) = min(G_FLOAT(OFS_PARM0), G_FLOAT(OFS_PARM1));
	}
	else if (prinst->callargc >= 3)
	{
		f = G_FLOAT(OFS_PARM0);
		for (i = 1; i < prinst->callargc; i++)
		{
			if (G_FLOAT((OFS_PARM0 + i * 3)) < f)
				f = G_FLOAT((OFS_PARM0 + i * 3));
		}
		G_FLOAT(OFS_RETURN) = f;
	}
	else
		PR_BIError(prinst, "PF_min: must supply at least 2 floats\n");
}

//float(float a, floats) max = #95
void QCBUILTIN PF_max (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int i;
	float f;

	if (prinst->callargc == 2)
	{
		G_FLOAT(OFS_RETURN) = max(G_FLOAT(OFS_PARM0), G_FLOAT(OFS_PARM1));
	}
	else if (prinst->callargc >= 3)
	{
		f = G_FLOAT(OFS_PARM0);
		for (i = 1; i < prinst->callargc; i++) {
			if (G_FLOAT((OFS_PARM0 + i * 3)) > f)
				f = G_FLOAT((OFS_PARM0 + i * 3));
		}
		G_FLOAT(OFS_RETURN) = f;
	}
	else
	{
		PR_BIError(prinst, "PF_min: must supply at least 2 floats\n");
	}
}

//float(float minimum, float val, float maximum) bound = #96
void QCBUILTIN PF_bound (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	if (G_FLOAT(OFS_PARM1) > G_FLOAT(OFS_PARM2))
		G_FLOAT(OFS_RETURN) = G_FLOAT(OFS_PARM2);
	else if (G_FLOAT(OFS_PARM1) < G_FLOAT(OFS_PARM0))
		G_FLOAT(OFS_RETURN) = G_FLOAT(OFS_PARM0);
	else
		G_FLOAT(OFS_RETURN) = G_FLOAT(OFS_PARM1);
}

void QCBUILTIN PF_mod (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	float a = G_FLOAT(OFS_PARM0);
	float n = G_FLOAT(OFS_PARM1);

	if (n == 0)
	{
		PR_RunWarning(prinst, "mod by zero\n");
		G_FLOAT(OFS_RETURN) = 0;
	}
	else
	{
		//because QC is inherantly floaty, lets use floats.
		G_FLOAT(OFS_RETURN) = a - (n * (int)(a/n));
//		G_FLOAT(OFS_RETURN) = a % n;
	}
}

void QCBUILTIN PF_Sin (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = sin(G_FLOAT(OFS_PARM0));
}
void QCBUILTIN PF_Cos (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = cos(G_FLOAT(OFS_PARM0));
}
void QCBUILTIN PF_Sqrt (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = sqrt(G_FLOAT(OFS_PARM0));
}
void QCBUILTIN PF_pow (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = pow(G_FLOAT(OFS_PARM0), G_FLOAT(OFS_PARM1));
}
void QCBUILTIN PF_asin (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = asin(G_FLOAT(OFS_PARM0));
}
void QCBUILTIN PF_acos (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = acos(G_FLOAT(OFS_PARM0));
}
void QCBUILTIN PF_atan (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = atan(G_FLOAT(OFS_PARM0));
}
void QCBUILTIN PF_atan2 (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = atan2(G_FLOAT(OFS_PARM0), G_FLOAT(OFS_PARM1));
}
void QCBUILTIN PF_tan (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = tan(G_FLOAT(OFS_PARM0));
}

void QCBUILTIN PF_fabs (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	float	v;
	v = G_FLOAT(OFS_PARM0);
	G_FLOAT(OFS_RETURN) = fabs(v);
}

void QCBUILTIN PF_rint (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	float	f;
	f = G_FLOAT(OFS_PARM0);
	if (f > 0)
		G_FLOAT(OFS_RETURN) = (int)(f + 0.5);
	else
		G_FLOAT(OFS_RETURN) = (int)(f - 0.5);
}

void QCBUILTIN PF_floor (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = floor(G_FLOAT(OFS_PARM0));
}

void QCBUILTIN PF_ceil (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	G_FLOAT(OFS_RETURN) = ceil(G_FLOAT(OFS_PARM0));
}

void QCBUILTIN PF_anglemod (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	float v = G_FLOAT(OFS_PARM0);

	while (v >= 360)
		v = v - 360;
	while (v < 0)
		v = v + 360;

	G_FLOAT(OFS_RETURN) = v;
}

//void(vector dir) vectorvectors
//Writes new values for v_forward, v_up, and v_right based on the given forward vector
void QCBUILTIN PF_vectorvectors (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	world_t *world = prinst->parms->user;

	VectorCopy(G_VECTOR(OFS_PARM0), world->g.v_forward);
	VectorNormalize(world->g.v_forward);
	VectorVectors(world->g.v_forward, world->g.v_right, world->g.v_up);
}

void QCBUILTIN PF_crossproduct (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	CrossProduct(G_VECTOR(OFS_PARM0), G_VECTOR(OFS_PARM1), G_VECTOR(OFS_RETURN));
}

//Maths functions
////////////////////////////////////////////////////
/*
===============
PF_droptofloor

void() droptofloor
===============
*/
void QCBUILTIN PF_droptofloor (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	extern cvar_t pr_droptofloorunits;
	world_t *world = prinst->parms->user;
	wedict_t	*ent;
	vec3_t		end;
	vec3_t		start;
	trace_t		trace;
	const float *gravitydir;

	ent = PROG_TO_WEDICT(prinst, *world->g.self);

	if (ent->xv->gravitydir[2] || ent->xv->gravitydir[1] || ent->xv->gravitydir[0])
		gravitydir = ent->xv->gravitydir;
	else
		gravitydir = world->g.defaultgravitydir;

	VectorCopy (ent->v->origin, end);
	if (pr_droptofloorunits.value > 0)
		VectorMA(end, pr_droptofloorunits.value, gravitydir, end);
	else
		VectorMA(end, 256, gravitydir, end);

	VectorCopy (ent->v->origin, start);
	trace = World_Move (world, start, ent->v->mins, ent->v->maxs, end, MOVE_NORMAL, ent);

	if (trace.fraction == 1 || trace.allsolid)
		G_FLOAT(OFS_RETURN) = 0;
	else
	{
		VectorCopy (trace.endpos, ent->v->origin);
		World_LinkEdict (world, ent, false);
		ent->v->flags = (int)ent->v->flags | FL_ONGROUND;
		ent->v->groundentity = EDICT_TO_PROG(prinst, trace.ent);
		G_FLOAT(OFS_RETURN) = 1;
	}
}

/*
=============
PF_checkbottom
=============
*/
void QCBUILTIN PF_checkbottom (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	world_t *world = prinst->parms->user;
	wedict_t	*ent;
	vec3_t		gravup;

	ent = G_WEDICT(prinst, OFS_PARM0);

	if (ent->xv->gravitydir[0] || ent->xv->gravitydir[1] || ent->xv->gravitydir[2])
		VectorNegate(ent->xv->gravitydir, gravup);
	else
		VectorSet(gravup, 0, 0, 1);

	G_FLOAT(OFS_RETURN) = World_CheckBottom (world, ent, gravup);
}

////////////////////////////////////////////////////
//Vector functions

//vector() randomvec = #91
void QCBUILTIN PF_randomvector (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	vec3_t temp;
	do
	{
		temp[0] = (rand() & 32767) * (2.0 / 32767.0) - 1.0;
		temp[1] = (rand() & 32767) * (2.0 / 32767.0) - 1.0;
		temp[2] = (rand() & 32767) * (2.0 / 32767.0) - 1.0;
	} while (DotProduct(temp, temp) >= 1);
	VectorCopy (temp, G_VECTOR(OFS_RETURN));
}


/*
==============
PF_changeyaw

This was a major timewaster in progs, so it was converted to C

FIXME: add gravitydir support
==============
*/
float World_changeyaw (wedict_t *ent);
void QCBUILTIN PF_changeyaw (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	world_t *w = prinst->parms->user;
	wedict_t		*ent;
//	float		ideal, current, move, speed;

	ent = PROG_TO_WEDICT(prinst, *w->g.self);

	World_changeyaw(ent);
}

//void() changepitch = #63;
//FIXME: support gravitydir
void QCBUILTIN PF_changepitch (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	world_t *w = prinst->parms->user;
	wedict_t		*ent;
	float		ideal, current, move, speed;

	ent = PROG_TO_WEDICT(prinst, *w->g.self);
	current = anglemod( ent->v->angles[1] );
	ideal = ent->xv->idealpitch;
	speed = ent->xv->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;
	}

	ent->v->angles[1] = anglemod (current + move);
}

//float vectoyaw(vector, optional entity reference)
void QCBUILTIN PF_vectoyaw (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	float	*value1;
	float	x, y;
	float	yaw;

	value1 = G_VECTOR(OFS_PARM0);

	if (prinst->callargc >= 2)
	{
		vec3_t axis[3];
		World_GetEntGravityAxis(G_WEDICT(prinst, OFS_PARM1), axis);
		x = DotProduct(value1, axis[0]);
		y = DotProduct(value1, axis[1]);
	}
	else
	{
		x = value1[0];
		y = value1[1];
	}

	if (y == 0 && x == 0)
		yaw = 0;
	else
	{
		yaw = (int) (atan2(y, x) * 180 / M_PI);
		if (yaw < 0)
			yaw += 360;
	}

	G_FLOAT(OFS_RETURN) = yaw;
}

//float(vector) vlen
void QCBUILTIN PF_vlen (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	float	*value1 = G_VECTOR(OFS_PARM0);
	G_FLOAT(OFS_RETURN) = sqrt(DotProduct(value1, value1));
}
//float(vector) vhlen
void QCBUILTIN PF_vhlen (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	float	*value1 = G_VECTOR(OFS_PARM0);
	G_FLOAT(OFS_RETURN) = sqrt(DotProduct2(value1, value1));
}

//vector vectoangles(vector)
void QCBUILTIN PF_vectoangles (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	float	*value1, *up;

	value1 = G_VECTOR(OFS_PARM0);
	if (prinst->callargc >= 2)
		up = G_VECTOR(OFS_PARM1);
	else
		up = NULL;

	VectorAngles(value1, up, G_VECTOR(OFS_RETURN), true);
}

//vector normalize(vector)
void QCBUILTIN PF_normalize (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	float	*value1;
	vec3_t	newvalue;
	float	newf;

	value1 = G_VECTOR(OFS_PARM0);

	newf = value1[0] * value1[0] + value1[1] * value1[1] + value1[2]*value1[2];
	newf = sqrt(newf);

	if (newf == 0)
		newvalue[0] = newvalue[1] = newvalue[2] = 0;
	else
	{
		newf = 1/newf;
		newvalue[0] = value1[0] * newf;
		newvalue[1] = value1[1] * newf;
		newvalue[2] = value1[2] * newf;
	}

	VectorCopy (newvalue, G_VECTOR(OFS_RETURN));
}

void QCBUILTIN PF_rotatevectorsbyangles (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	world_t *w = prinst->parms->user;

	float *ang = G_VECTOR(OFS_PARM0);
	vec3_t src[3], trans[3], res[3];
	ang[0]*=r_meshpitch.value;
	AngleVectors(ang, trans[0], trans[1], trans[2]);
	ang[0]*=r_meshpitch.value;
	VectorInverse(trans[1]);

	VectorCopy(w->g.v_forward, src[0]);
	VectorNegate(w->g.v_right, src[1]);
	VectorCopy(w->g.v_up, src[2]);

	R_ConcatRotations(trans, src, res);

	VectorCopy(res[0], w->g.v_forward);
	VectorNegate(res[1], w->g.v_right);
	VectorCopy(res[2], w->g.v_up);
}

void QCBUILTIN PF_rotatevectorsbymatrix (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	world_t *w = prinst->parms->user;
	vec3_t src[3], trans[3], res[3];

	VectorCopy(G_VECTOR(OFS_PARM0), src[0]);
	VectorNegate(G_VECTOR(OFS_PARM1), src[1]);
	VectorCopy(G_VECTOR(OFS_PARM2), src[2]);

	VectorCopy(w->g.v_forward, src[0]);
	VectorNegate(w->g.v_right, src[1]);
	VectorCopy(w->g.v_up, src[2]);

	R_ConcatRotations(trans, src, res);

	VectorCopy(res[0], w->g.v_forward);
	VectorNegate(res[1], w->g.v_right);
	VectorCopy(res[2], w->g.v_up);
}

//Vector functions
////////////////////////////////////////////////////
//Progs internals

void QCBUILTIN PF_Abort(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	prinst->AbortStack(prinst);
}

//this func calls a function in annother progs
//it works in the same way as the above func, except that it calls by reference to a function, as opposed to by it's name
//used for entity function variables - not actually needed anymore
void QCBUILTIN PF_externrefcall (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
//	int progsnum;
	func_t f;
	int i;
//	progsnum = G_PROG(OFS_PARM0);
	f = G_INT(OFS_PARM1);

	for (i = OFS_PARM0; i < OFS_PARM5; i+=3)
		VectorCopy(G_VECTOR(i+(2*3)), G_VECTOR(i));

	PR_ExecuteProgram(prinst, f);
}

void QCBUILTIN PF_externset (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)	//set a value in annother progs
{
	int n = G_PROG(OFS_PARM0);
	int v = G_INT(OFS_PARM1);
	char *varname = PF_VarString(prinst, 2, pr_globals);
	eval_t *var;

	var = PR_FindGlobal(prinst, varname, n, NULL);

	if (var)
		var->_int = v;
}

void QCBUILTIN PF_externvalue (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)	//return a value in annother progs
{
	int n = G_PROG(OFS_PARM0);
	char *varname = PF_VarString(prinst, 1, pr_globals);
	eval_t *var;

	if (*varname == '&')
	{
		//return its address instead of its value, for pointer use.
		var = prinst->FindGlobal(prinst, varname+1, n, NULL);
		if (var)
			G_INT(OFS_RETURN) = (char*)var - prinst->stringtable;
		else
			G_INT(OFS_RETURN) = 0;
	}
	else
	{
		var = prinst->FindGlobal(prinst, varname, n, NULL);

		if (var)
		{
			G_INT(OFS_RETURN+0) = ((int*)&var->_int)[0];
			G_INT(OFS_RETURN+1) = ((int*)&var->_int)[1];
			G_INT(OFS_RETURN+2) = ((int*)&var->_int)[2];
		}
		else
		{
			n = prinst->FindFunction(prinst, varname, n);
			G_INT(OFS_RETURN) = n;
		}
	}
}

void QCBUILTIN PF_externcall (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)	//this func calls a function in annother progs (by name)
{
	int progsnum;
	const char *funcname;
	int i;
	string_t failedst = G_INT(OFS_PARM1);
	func_t f;

	progsnum = G_PROG(OFS_PARM0);
	funcname = PR_GetStringOfs(prinst, OFS_PARM1);

	f = PR_FindFunction(prinst, funcname, progsnum);
	if (f)
	{
		for (i = OFS_PARM0; i < OFS_PARM5; i+=3)
			VectorCopy(G_VECTOR(i+(2*3)), G_VECTOR(i));

		PR_ExecuteProgram(prinst, f);
	}
	else
	{
		f = PR_FindFunction(prinst, "MissingFunc", progsnum);
		if (!f)
		{
			PR_BIError(prinst, "Couldn't find function %s", funcname);
			return;
		}

		for (i = OFS_PARM0; i < OFS_PARM6; i+=3)
			VectorCopy(G_VECTOR(i+(1*3)), G_VECTOR(i));
		G_INT(OFS_PARM0) = failedst;

		PR_ExecuteProgram(prinst, f);
	}
}

void QCBUILTIN PF_traceon (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	prinst->debug_trace = DEBUG_TRACE_INTO;
}

void QCBUILTIN PF_traceoff (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	prinst->debug_trace = DEBUG_TRACE_OFF;
}
void QCBUILTIN PF_coredump (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	size_t size = 1024*1024*8;
	char *buffer = BZ_Malloc(size);
	prinst->save_ents(prinst, buffer, &size, size, 3);
	COM_WriteFile("core.txt", FS_GAMEONLY, buffer, size);
	BZ_Free(buffer);
}
void QCBUILTIN PF_eprint (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	size_t max = 1024*1024;
	size_t size = 0;
	char *buffer = BZ_Malloc(max);
	char *buf;
	buf = prinst->saveent(prinst, buffer, &size, max, (struct edict_s*)G_WEDICT(prinst, OFS_PARM0));
	Con_Printf("Entity %i:\n%s\n", G_EDICTNUM(prinst, OFS_PARM0), buf);
	BZ_Free(buffer);
}

void QCBUILTIN PF_break (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	PR_RunWarning (prinst, "break statement");
}

void QCBUILTIN PF_error (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	char	*s;

	s = PF_VarString(prinst, 0, pr_globals);
/*	Con_Printf ("======SERVER ERROR in %s:\n%s\n", PR_GetString(pr_xfunction->s_name) ,s);
	ed = PROG_TO_EDICT(pr_global_struct->self);
	ED_Print (ed);
*/

	PR_StackTrace(prinst, false);

	Con_Printf("%s\n", s);

	if (developer.value)
	{
//		SV_Error ("Program error: %s", s);
		PF_break(prinst, pr_globals);
		prinst->debug_trace = DEBUG_TRACE_INTO;
	}
	else
	{
		PR_AbortStack(prinst);
		PR_BIError (prinst, "Program error: %s", s);
	}
}

//Progs internals
////////////////////////////////////////////////////
//System

//Sends text over to the client's execution buffer
void QCBUILTIN PF_localcmd (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	char	*str;

	str = PF_VarString(prinst, 0, pr_globals);
	if (developer.ival >= 2)
	{
		PR_StackTrace(prinst, false);
		Con_Printf("localcmd: %s\n", str);
	}
	if (!strcmp(str, "host_framerate 0\n"))
		Cbuf_AddText ("sv_mintic 0\n", RESTRICT_INSECURE);	//hmm... do this better...
	else
		Cbuf_AddText (str, RESTRICT_INSECURE);
}

void QCBUILTIN PF_gettime (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	int timer = (prinst->callargc > 0)?G_FLOAT(OFS_PARM0):0;
	switch(timer)
	{
	default:
	case 0:		//cached time at start of frame
		G_FLOAT(OFS_RETURN) = realtime;
		break;
	case 1:		//actual time
		G_FLOAT(OFS_RETURN) = Sys_DoubleTime();
		break;
	//case 2:	//highres.. looks like time into the frame
	//case 3:	//uptime
	//case 4:	//cd track
#ifndef SERVERONLY
	case 5:		//sim time
		G_FLOAT(OFS_RETURN) = cl.time;
		break;
#endif
	}
}

void QCBUILTIN PF_calltimeofday (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	date_t date;
	func_t f;

	f = PR_FindFunction(prinst, "timeofday", PR_ANY);
	if (f)
	{
		COM_TimeOfDay(&date);

		G_FLOAT(OFS_PARM0) = (float)date.sec;
		G_FLOAT(OFS_PARM1) = (float)date.min;
		G_FLOAT(OFS_PARM2) = (float)date.hour;
		G_FLOAT(OFS_PARM3) = (float)date.day;
		G_FLOAT(OFS_PARM4) = (float)date.mon;
		G_FLOAT(OFS_PARM5) = (float)date.year;
		G_INT(OFS_PARM6) = (int)PR_TempString(prinst, date.str);

		PR_ExecuteProgram(prinst, f);
	}
}

void QCBUILTIN PF_sprintf_internal (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals, const char *s, int firstarg, char *outbuf, int outbuflen)
{
	const char *s0;
	char *o = outbuf, *end = outbuf + outbuflen, *err;
	int width, precision, thisarg, flags;
	char formatbuf[16];
	char *f;
	int argpos = firstarg;
	int isfloat;
	static int dummyivec[3] = {0, 0, 0};
	static float dummyvec[3] = {0, 0, 0};

#define PRINTF_ALTERNATE 1
#define PRINTF_ZEROPAD 2
#define PRINTF_LEFT 4
#define PRINTF_SPACEPOSITIVE 8
#define PRINTF_SIGNPOSITIVE 16

	formatbuf[0] = '%';

#define GETARG_FLOAT(a) (((a)>=firstarg && (a)<prinst->callargc) ? (G_FLOAT(OFS_PARM0 + 3 * (a))) : 0)
#define GETARG_VECTOR(a) (((a)>=firstarg && (a)<prinst->callargc) ? (G_VECTOR(OFS_PARM0 + 3 * (a))) : dummyvec)
#define GETARG_INT(a) (((a)>=firstarg && (a)<prinst->callargc) ? (G_INT(OFS_PARM0 + 3 * (a))) : 0)
#define GETARG_INTVECTOR(a) (((a)>=firstarg && (a)<prinst->callargc) ? ((int*) G_VECTOR(OFS_PARM0 + 3 * (a))) : dummyivec)
#define GETARG_STRING(a) (((a)>=firstarg && (a)<prinst->callargc) ? (PR_GetStringOfs(prinst, 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)
					{
						Con_Printf("PF_sprintf: bad format string: %s\n", s0);
						goto finished;
					}
					if(*err == '$')
					{
						thisarg = width + (firstarg-1);
						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 != '$')
							{
								Con_Printf("PF_sprintf: invalid format string: %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)
						{
							Con_Printf("PF_sprintf: invalid format string: %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 != '$')
							{
								Con_Printf("PF_sprintf: invalid format string: %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)
						{
							Con_Printf("PF_sprintf: invalid format string: %s\n", s0);
							goto finished;
						}
						s = err;
					}
					else
					{
						Con_Printf("PF_sprintf: invalid format string: %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 (*s == 'p' || *s == 'P')
				{
					//%p is slightly different from %x.
					//always 8-bytes wide with 0 padding, always ints.
					flags |= PRINTF_ZEROPAD;
					if (width < 0) width = 8;
					if (isfloat < 0) isfloat = 0;
				}
				else if (*s == 'i')
				{
					//%i defaults to ints, not floats.
					if(isfloat < 0) isfloat = 0;
				}

				//assume floats, not ints.
				if(isfloat < 0)
					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 == 'p')
						*f++ = 'x';
					else if (*s == 'P')
						*f++ = 'X';
					else
						*f++ = *s;
					*f++ = 0;

					if(width < 0) // not set
						width = 0;

					switch(*s)
					{
						case 'd': case 'i':
							if(precision < 0) // not set
								Q_snprintfz(o, end - o, formatbuf, width, (isfloat ? (int) GETARG_FLOAT(thisarg) : (int) GETARG_INT(thisarg)));
							else
								Q_snprintfz(o, end - o, formatbuf, width, precision, (isfloat ? (int) GETARG_FLOAT(thisarg) : (int) GETARG_INT(thisarg)));
							o += strlen(o);
							break;
						case 'o': case 'u': case 'x': case 'X': case 'p': case 'P':
							if(precision < 0) // not set
								Q_snprintfz(o, end - o, formatbuf, width, (isfloat ? (unsigned int) GETARG_FLOAT(thisarg) : (unsigned int) GETARG_INT(thisarg)));
							else
								Q_snprintfz(o, end - o, formatbuf, width, precision, (isfloat ? (unsigned int) GETARG_FLOAT(thisarg) : (unsigned int) GETARG_INT(thisarg)));
							o += strlen(o);
							break;
						case 'e': case 'E': case 'f': case 'F': case 'g': case 'G':
							if(precision < 0) // not set
								Q_snprintfz(o, end - o, formatbuf, width, (isfloat ? (double) GETARG_FLOAT(thisarg) : (double) GETARG_INT(thisarg)));
							else
								Q_snprintfz(o, end - o, formatbuf, width, precision, (isfloat ? (double) GETARG_FLOAT(thisarg) : (double) GETARG_INT(thisarg)));
							o += strlen(o);
							break;
						case 'v': case 'V':
							f[-2] += 'g' - 'v';
							if(precision < 0) // not set
								Q_snprintfz(o, end - o, va("%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
								Q_snprintfz(o, end - o, va("%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])
								);
							o += strlen(o);
							break;
						case 'c':
							//UTF-8-FIXME: figure it out yourself
//							if(flags & PRINTF_ALTERNATE)
							{
								if(precision < 0) // not set
									Q_snprintfz(o, end - o, formatbuf, width, (isfloat ? (unsigned int) GETARG_FLOAT(thisarg) : (unsigned int) GETARG_INT(thisarg)));
								else
									Q_snprintfz(o, end - o, formatbuf, width, precision, (isfloat ? (unsigned int) GETARG_FLOAT(thisarg) : (unsigned int) GETARG_INT(thisarg)));
								o += strlen(o);
							}
/*							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;
						case 's':
							//UTF-8-FIXME: figure it out yourself
//							if(flags & PRINTF_ALTERNATE)
							{
								if(precision < 0) // not set
									Q_snprintfz(o, end - o, formatbuf, width, GETARG_STRING(thisarg));
								else
									Q_snprintfz(o, end - o, formatbuf, width, precision, GETARG_STRING(thisarg));
								o += strlen(o);
							}
/*							else
							{
								if(precision < 0) // not set
									precision = end - o - 1;
								o += u8_strpad(o, end - o, GETARG_STRING(thisarg), (flags & PRINTF_LEFT) != 0, width, precision);
							}
*/							break;
						default:
							Con_Printf("PF_sprintf: invalid format string: %s\n", s0);
							goto finished;
					}
				}
				++s;
				break;
			default:
verbatim:
				if(o < end - 1)
					*o++ = *s;
				s++;
				break;
		}
	}
finished:
	*o = 0;
}

void QCBUILTIN PF_sprintf (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	char outbuf[4096];
	PF_sprintf_internal(prinst, pr_globals, PR_GetStringOfs(prinst, OFS_PARM0), 1, outbuf, sizeof(outbuf));
	RETURN_TSTRING(outbuf);
}

//float()
void QCBUILTIN PF_numentityfields (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int count = 0;
	prinst->FieldInfo(prinst, &count);
	G_FLOAT(OFS_RETURN) = count;
}
void QCBUILTIN PF_findentityfield (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *fieldname = PR_GetStringOfs(prinst, OFS_PARM0);
	unsigned int count = 0, fidx;
	fdef_t *fdef;
	fdef = prinst->FieldInfo(prinst, &count);
	G_FLOAT(OFS_RETURN) = 0;
	for (fidx = 0; fidx < count; fidx++)
	{
		if (!strcmp(fdef[fidx].name, fieldname))
		{
			G_FLOAT(OFS_RETURN) = fidx;
			break;
		}
	}
}
void QCBUILTIN PF_entityfieldref (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int fidx = G_FLOAT(OFS_PARM0);
	unsigned int count = 0;
	fdef_t *fdef;
	fdef = prinst->FieldInfo(prinst, &count);
	G_INT(OFS_RETURN) = 0;
	if (fidx < count)
	{
		G_INT(OFS_RETURN) = fdef[fidx].ofs;
	}
}
//string(float fieldnum)
void QCBUILTIN PF_entityfieldname (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int fidx = G_FLOAT(OFS_PARM0);
	unsigned int count = 0;
	fdef_t *fdef;
	fdef = prinst->FieldInfo(prinst, &count);
	if (fidx < count)
	{
		RETURN_TSTRING(fdef[fidx].name);
	}
	else
		G_INT(OFS_RETURN) = 0;
}
//float(float fieldnum)
void QCBUILTIN PF_entityfieldtype (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int fidx = G_FLOAT(OFS_PARM0);
	unsigned int count = 0;
	fdef_t *fdef = prinst->FieldInfo(prinst, &count);
	if (fidx < count)
	{
		G_FLOAT(OFS_RETURN) = fdef[fidx].type;
	}
	else
		G_FLOAT(OFS_RETURN) = 0;
}
//string(float fieldnum, entity ent)
void QCBUILTIN PF_getentityfieldstring (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int fidx = G_FLOAT(OFS_PARM0);
	wedict_t *ent = (wedict_t *)G_EDICT(prinst, OFS_PARM1);
	eval_t *eval;
	unsigned int count = 0;
	fdef_t *fdef = prinst->FieldInfo(prinst, &count);
	if (fidx < count)
	{
		eval = (eval_t *)&((float *)ent->v)[fdef[fidx].ofs];
		RETURN_TSTRING(prinst->UglyValueString(prinst, fdef[fidx].type, eval));
	}
	else
		G_INT(OFS_RETURN) = 0;
}
//float(float fieldnum, entity ent, string s)
void QCBUILTIN PF_putentityfieldstring (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	unsigned int fidx = G_FLOAT(OFS_PARM0);
	wedict_t *ent = (wedict_t *)G_EDICT(prinst, OFS_PARM1);
	const char *str = PR_GetStringOfs(prinst, OFS_PARM2);
	eval_t *eval;
	unsigned int count = 0;
	fdef_t *fdef = prinst->FieldInfo(prinst, &count);
	if (fidx < count)
	{
		eval = (eval_t *)&((float *)ent->v)[fdef[fidx].ofs];
		G_FLOAT(OFS_RETURN) = prinst->ParseEval(prinst, eval, fdef[fidx].type, str);
	}
	else
		G_FLOAT(OFS_RETURN) = 0;
}

//must match ordering in Cmd_ExecuteString.
void QCBUILTIN PF_checkcommand (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	const char *str = PR_GetStringOfs(prinst, OFS_PARM0);
	//functions, aliases, cvars. in that order.
	if (Cmd_Exists(str))
	{
		G_FLOAT(OFS_RETURN) = 1;
		return;
	}
	if (Cmd_AliasExist(str, RESTRICT_INSECURE))
	{
		G_FLOAT(OFS_RETURN) = 2;
		return;
	}
	if (Cvar_FindVar(str))
	{
		G_FLOAT(OFS_RETURN) = 3;
		return;
	}
	G_FLOAT(OFS_RETURN) = 0;
}

void QCBUILTIN PF_physics_supported(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
#ifdef USERBE
	world_t *world = prinst->parms->user;
	if (prinst->callargc)
	{
		if (G_FLOAT(OFS_PARM0) && !world->rbe)
			World_RBE_Start(world);
		else if (!G_FLOAT(OFS_PARM0) && world->rbe)
			World_RBE_Shutdown(world);
	}
	if (world->rbe)
		G_FLOAT(OFS_RETURN) = 1;
	else
#endif
		G_FLOAT(OFS_RETURN) = 0;
}
#ifdef USERBE
void QCBUILTIN PF_physics_enable(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	wedict_t*e			= G_WEDICT(prinst, OFS_PARM0);
	int		isenable	= G_FLOAT(OFS_PARM1);
	world_t *world = prinst->parms->user;
	rbecommandqueue_t cmd;
	
	cmd.command = isenable?RBECMD_ENABLE:RBECMD_DISABLE;
	cmd.edict = e;

	if (world->rbe)
		world->rbe->PushCommand(world, &cmd);
}
void QCBUILTIN PF_physics_addforce(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	wedict_t*e				= G_WEDICT(prinst, OFS_PARM0);
	float	*force			= G_VECTOR(OFS_PARM1);
	float	*relative_ofs	= G_VECTOR(OFS_PARM2);
	world_t *world = prinst->parms->user;
	rbecommandqueue_t cmd;

	cmd.command = RBECMD_FORCE;
	cmd.edict = e;
	VectorCopy(force, cmd.v1);
	VectorCopy(relative_ofs, cmd.v2);

	if (world->rbe)
		world->rbe->PushCommand(world, &cmd);
}
void QCBUILTIN PF_physics_addtorque(pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
{
	wedict_t*e				= G_WEDICT(prinst, OFS_PARM0);
	float	*torque			= G_VECTOR(OFS_PARM1);
	world_t *world = prinst->parms->user;
	rbecommandqueue_t cmd;

	cmd.command = RBECMD_TORQUE;
	cmd.edict = e;
	VectorCopy(torque, cmd.v1);

	if (world->rbe)
		world->rbe->PushCommand(world, &cmd);
}
#endif



void PR_Common_Shutdown(pubprogfuncs_t *progs, qboolean errored)
{
#if defined(SKELETALOBJECTS) || defined(RAGDOLLS)
	skel_reset(progs->parms->user);
#endif
	PR_fclose_progs(progs);
	search_close_progs(progs, !errored);
#ifdef TEXTEDITOR
	Editor_ProgsKilled(progs);
#endif
	tokenize_flush();
}


#define DEF_SAVEGLOBAL (1u<<15)
static void PR_AutoCvarApply(pubprogfuncs_t *prinst, eval_t *val, etype_t type, cvar_t *var)
{
	switch(type & ~DEF_SAVEGLOBAL)
	{
	case ev_float:
		val->_float = var->value;
		break;
	case ev_integer:
		val->_int = var->ival;
		break;
	case ev_string:
#ifdef QCGC
		if (*var->string)
			val->_int = PR_NewString(prinst, var->string);
		else
			val->_int = 0;
#else
		if (val->_int)
			prinst->RemoveProgsString(prinst, val->_int);
		if (*var->string)
			val->_int = PR_SetString(prinst, var->string);
		else
			val->_int = 0;
#endif
		break;
	case ev_vector:
		{
			char res[128];
			char *vs = var->string;
			vs = COM_ParseOut(vs, res, sizeof(res));
			val->_vector[0] = atof(res);
			vs = COM_ParseOut(vs, res, sizeof(res));
			val->_vector[1] = atof(res);
			vs = COM_ParseOut(vs, res, sizeof(res));
			val->_vector[2] = atof(res);
		}
		break;
	}
}
/*called when a var has changed*/
void PR_AutoCvar(pubprogfuncs_t *prinst, cvar_t *var)
{
	char *gname;
	eval_t *val;
	etype_t type;
	int n, p;

	if (var->flags & CVAR_NOUNSAFEEXPAND)
		return;

	for (n = 0; n < 2; n++)
	{
		gname = n?var->name2:var->name;
		if (!gname)
			continue;
		gname = va("autocvar_%s", gname);
		
		for (p = 0; p < prinst->numprogs; p++)
		{
			val = PR_FindGlobal(prinst, gname, p, &type);
			if (val)
				PR_AutoCvarApply(prinst, val, type, var);
		}
	}
}

void PDECL PR_FoundAutoCvarGlobal(pubprogfuncs_t *progfuncs, char *name, eval_t *val, etype_t type, void *ctx)
{
	cvar_t *var;
	const char *vals;
	int nlen;
	name += 9; //autocvar_
	
	switch(type & ~DEF_SAVEGLOBAL)
	{
	case ev_float:
		//ignore individual vector componants. let the vector itself do all the work.
		nlen = strlen(name);
		if(nlen >= 2 && name[nlen-2] == '_' && (name[nlen-1] == 'x' || name[nlen-1] == 'y' || name[nlen-1] == 'z'))
			return;

		vals = va("%g", val->_float);
		break;
	case ev_integer:
		vals = va("%i", val->_int);
		break;
	case ev_vector:
		vals = va("%g %g %g", val->_vector[0], val->_vector[1], val->_vector[2]);
		break;
	case ev_string:
		vals = PR_GetString(progfuncs, val->string);
		val->_int = 0;
		break;
	default:
		return;
	}
	var = Cvar_Get(name, vals, 0, "autocvars");
	if (!var || (var->flags & CVAR_NOUNSAFEEXPAND))
		return;

	var->flags |= CVAR_TELLGAMECODE;

	PR_AutoCvarApply(progfuncs, val, type, var);
}

void PDECL PR_FoundDoTranslateGlobal(pubprogfuncs_t *progfuncs, char *name, eval_t *val, etype_t type, void *ctx)
{
	const char *olds;
	const char *news;
	if ((type & ~DEF_SAVEGLOBAL) != ev_string)
		return;

	olds = PR_GetString(progfuncs, val->string);
	news = PO_GetText(ctx, olds);
	if (news != olds)
		val->string = PR_NewString(progfuncs, news);
}

//called after each progs is loaded
void PR_ProgsAdded(pubprogfuncs_t *prinst, int newprogs, const char *modulename)
{
	vfsfile_t *f = NULL;
	char lang[64], *h;
	extern cvar_t language;
	if (!prinst || newprogs < 0)
		return;
	if (*language.string)
	{
		Q_strncpyz(lang, language.string, sizeof(lang));
		while ((h = strchr(lang, '-')))
			*h = '_';
		for(;;)
		{
			if (!*lang)
				break;
			f = FS_OpenVFS(va("%s.%s.po", modulename, lang), "rb", FS_GAME);
			if (f)
				break;
			h = strchr(lang, '_');
			if (h)
				*h = 0;
			else
				break;
		}
	}

	if (f)
	{
		void *pofile = PO_Load(f);
		prinst->FindPrefixGlobals (prinst, newprogs, "dotranslate_", PR_FoundDoTranslateGlobal, pofile);
		PO_Close(pofile);
	}
	prinst->FindPrefixGlobals (prinst, newprogs, "autocvar_", PR_FoundAutoCvarGlobal, NULL);

	QCLoadBreakpoints("", modulename);
}

#define NOBI 0,	NULL, {NULL},
lh_extension_t QSG_Extensions[] = {

//as a special hack, the first 32 entries are PEXT features.
//some of these are overkill yes, but they are all derived from the fteextensions flags and document the underlaying protocol available.
//(which is why there are two lists of extensions here)
//note: not all of these are actually supported. This list mearly reflects the values of the PEXT_ constants.
//Check protocol.h to make sure that the related PEXT is enabled. The engine will only accept if they are actually supported.
	{"FTE_PEXT_SETVIEW",				0,	NULL, {NULL}, "NQ's svc_setview works correctly even in quakeworld"},
	{"DP_ENT_SCALE"},			//entities may be rescaled
	{"FTE_PEXT_LIGHTSTYLECOL"},	//lightstyles may have colours.
	{"DP_ENT_ALPHA"},			//transparent entites
	{"FTE_PEXT_VIEW2"},		//secondary view.
	{"FTE_PEXT_ACURATETIMINGS"},		//allows full interpolation
	{"FTE_PEXT_SOUNDDBL"},	//twice the sound indexes
	{"FTE_PEXT_FATNESS"},		//entities may be expanded along their vertex normals
	{"DP_HALFLIFE_MAP"},		//entity can visit a hl bsp
	{"FTE_PEXT_TE_BULLET"},	//additional particle effect. Like TE_SPIKE and TE_SUPERSPIKE
	{"FTE_PEXT_HULLSIZE"},	//means we can tell a client to go to crouching hull
	{"FTE_PEXT_MODELDBL"},	//max of 512 models
	{"FTE_PEXT_ENTITYDBL"},	//max of 1024 ents
	{"FTE_PEXT_ENTITYDBL2"},	//max of 2048 ents
	{"FTE_PEXT_FLOATCOORDS"},
	{"FTE_PEXT_VWEAP"},
	{"FTE_PEXT_Q2BSP"},		//supports q2 maps. No bugs are apparent.
	{"FTE_PEXT_Q3BSP"},		//quake3 bsp support. dp probably has an equivelent, but this is queryable per client.
	{"DP_ENT_COLORMOD"},
	{NULL},	//splitscreen - not queryable.
	{"FTE_HEXEN2",						3,	NULL, {"particle2", "particle3", "particle4"}},				//client can use hexen2 maps. server can use hexen2 progs
	{"FTE_PEXT_SPAWNSTATIC"},	//means that static entities can have alpha/scale and anything else the engine supports on normal ents. (Added for >256 models, while still being compatible - previous system failed with -1 skins)
	{"FTE_PEXT_CUSTOMTENTS",					2,	NULL, {"RegisterTempEnt", "CustomTempEnt"}},
	{"FTE_PEXT_256PACKETENTITIES"},	//client is able to receive unlimited packet entities (server caps itself to 256 to prevent insanity).
	{NULL},
	{"TEI_SHOWLMP2",					6,	NULL, {"showpic", "hidepic", "movepic", "changepic", "showpicent", "hidepicent"}},	//telejano doesn't actually export the moveent/changeent (we don't want to either cos it would stop frik_file stuff being autoregistered)
	{"DP_GFX_QUAKE3MODELTAGS",			1,	NULL, {"setattachment"}},
	{"FTE_PK3DOWNLOADS"},
	{"PEXT_CHUNKEDDOWNLOADS"},

	{"EXT_CSQC_SHARED"},				//this is a separate extension because it requires protocol modifications. note: this is also the extension that extends the allowed stats.

	{"PEXT_DPFLAGS"},

	{"EXT_CSQC"},	//this is the base csqc extension. I'm not sure what needs to be separate and what does not.
	//{"EXT_CSQC_DELTAS"},//this is a separate extension because the feature may be banned in a league due to cheat protection.

//the rest are generic extensions
	{"??TOMAZ_STRINGS",					6, NULL, {"tq_zone", "tq_unzone",  "tq_strcat", "tq_substring", "tq_stof", "tq_stov"}},
	{"??TOMAZ_FILE",					4, NULL, {"tq_fopen", "tq_fclose", "tq_fgets", "tq_fputs"}},
	{"??MVDSV_BUILTINS",				21, NULL, {"executecommand", "mvdtokenize", "mvdargc", "mvdargv",
												"teamfield", "substr", "mvdstrcat", "mvdstrlen", "str2byte",
												"str2short", "mvdnewstr", "mvdfreestr", "conprint", "readcmd",
												"mvdstrcpy", "strstr", "mvdstrncpy", "log", "redirectcmd",
												"mvdcalltimeofday", "forcedemoframe"}},
//end of mvdsv
// Tomaz - QuakeC File System End

	{"BX_COLOREDTEXT"},
	{"DP_CON_SET",						0,	NULL, {NULL}, "The 'set' console command exists, and can be used to create/set cvars."},
#ifndef SERVERONLY
	{"DP_CON_SETA",						0,	NULL, {NULL}, "The 'seta' console command exists, like the 'set' command, but also marks the cvar for archiving, allowing it to be written into the user's config. Use this command in your default.cfg file."},
#endif
	{"DP_EF_ADDITIVE"},
//--{"DP_ENT_ALPHA"}, //listed above
	{"DP_EF_BLUE"},						//hah!! This is QuakeWorld!!!
	{"DP_EF_FULLBRIGHT"},				//Rerouted to hexen2 support.
	{"DP_EF_NODEPTHTEST"},				//for cheats
	{"DP_EF_NODRAW"},					//implemented by sending it with no modelindex
	{"DP_EF_NOGUNBOB"},					//nogunbob. sane people should use csqc instead.
	{"DP_EF_NOSHADOW"},
	{"DP_EF_RED"},
//--{"DP_ENT_COLORMOD"}, //listed above
	{"DP_ENT_CUSTOMCOLORMAP"},
	{"DP_ENT_EXTERIORMODELTOCLIENT"},
//--{"DP_ENT_SCALE"},	//listed above
	{"DP_ENT_TRAILEFFECTNUM",			1,	NULL, {"particleeffectnum"}, "self.traileffectnum=particleeffectnum(\"myeffectname\"); can be used to attach a particle trail to the given server entity. This is equivelent to calling trailparticles each frame."},
	//only in dp6 currently {"DP_ENT_GLOW"},
	{"DP_ENT_VIEWMODEL"},
	{"DP_GECKO_SUPPORT",				7,	NULL, {"gecko_create", "gecko_destroy", "gecko_navigate", "gecko_keyevent", "gecko_mousemove", "gecko_resize", "gecko_get_texture_extent"}},
//	{"DP_GFX_QUAKE3MODELTAGS"},
	{"DP_GFX_SKINFILES"},
	{"DP_GFX_SKYBOX"},	//according to the spec. :)
	{"DP_HALFLIFE_MAP_CVAR"},
	//to an extend {"DP_HALFLIFE_SPRITE"},
	{"DP_INPUTBUTTONS"},
	{"DP_LIGHTSTYLE_STATICVALUE"},
	{"DP_LITSUPPORT"},
	{"DP_MD3_TAGSINFO",					2,	NULL, {"gettagindex", "gettaginfo"}},
	{"DP_MONSTERWALK",					0,	NULL, {NULL}, "MOVETYPE_WALK is valid on non-player entities. Note that only players receive acceleration etc in line with none/bounce/fly/noclip movetypes on the player, thus you will have to provide your own accelerations (incluing gravity) yourself."},
	{"DP_MOVETYPEBOUNCEMISSILE"},		//I added the code for hexen2 support.
	{"DP_MOVETYPEFOLLOW"},
	{"DP_QC_ASINACOSATANATAN2TAN",		5,	NULL, {"asin", "acos", "atan", "atan2", "tan"}},
	{"DP_QC_CHANGEPITCH",				1,	NULL, {"changepitch"}},
	{"DP_QC_COPYENTITY",				1,	NULL, {"copyentity"}},
	{"DP_QC_CRC16",						1,	NULL, {"crc16"}},
	{"DP_QC_CVAR_DEFSTRING",			1,	NULL, {"cvar_defstring"}},
	{"DP_QC_CVAR_STRING",				1,	NULL, {"cvar_string"}},	//448 builtin.
	{"DP_QC_CVAR_TYPE",					1,	NULL, {"cvar_type"}},
	{"DP_QC_EDICT_NUM",					1,	NULL, {"edict_num"}},
	{"DP_QC_ENTITYDATA",				5,	NULL, {"numentityfields", "entityfieldname", "entityfieldtype", "getentityfieldstring", "putentityfieldstring"}},
	{"DP_QC_ETOS",						1,	NULL, {"etos"}},
	{"DP_QC_FINDCHAIN",					1,	NULL, {"findchain"}},
	{"DP_QC_FINDCHAINFLOAT",			1,	NULL, {"findchainfloat"}},
	{"DP_QC_FINDFLAGS",					1,	NULL, {"findflags"}},
	{"DP_QC_FINDCHAINFLAGS",			1,	NULL, {"findchainflags"}},
	{"DP_QC_FINDFLOAT",					1,	NULL, {"findfloat"}},
	{"DP_QC_FS_SEARCH",					4,	NULL, {"search_begin", "search_end", "search_getsize", "search_getfilename"}},
	{"DP_QC_GETSURFACE",				6,	NULL, {"getsurfacenumpoints", "getsurfacepoint", "getsurfacenormal", "getsurfacetexture", "getsurfacenearpoint", "getsurfaceclippedpoint"}},
	{"DP_QC_GETSURFACEPOINTATTRIBUTE",	1,	NULL, {"getsurfacepointattribute"}},
	{"DP_QC_MINMAXBOUND",				3,	NULL, {"min", "max", "bound"}},
	{"DP_QC_MULTIPLETEMPSTRINGS",		0,	NULL, {NULL}, "Superseded by DP_QC_UNLIMITEDTEMPSTRINGS. Functions that return a temporary string will not overwrite/destroy previous temporary strings until at least 16 strings are returned (or control returns to the engine)."},
	{"DP_QC_RANDOMVEC",					1,	NULL, {"randomvec"}},
	{"DP_QC_RENDER_SCENE",				0,	NULL, {NULL}, "clearscene+addentity+setviewprop+renderscene+setmodel are available to menuqc. WARNING: DP advertises this extension without actually supporting it, FTE does actually support it."},
	{"DP_QC_SINCOSSQRTPOW",				4,	NULL, {"sin", "cos", "sqrt", "pow"}},
	{"DP_QC_STRFTIME",					1,	NULL, {"strftime"}},
	{"DP_QC_STRING_CASE_FUNCTIONS",		2,	NULL, {"strtolower", "strtoupper"}},
	{"DP_QC_STRINGBUFFERS",				10,	NULL, {"buf_create", "buf_del", "buf_getsize", "buf_copy", "buf_sort", "buf_implode", "bufstr_get", "bufstr_set", "bufstr_add", "bufstr_free"}},
	{"DP_QC_STRINGCOLORFUNCTIONS",		2,	NULL, {"strlennocol", "strdecolorize"}},
	{"DP_QC_STRREPLACE",				2,	NULL, {"strreplace", "strireplace"}},
	{"DP_QC_TOKENIZEBYSEPARATOR",		1,	NULL, {"tokenizebyseparator"}},
	{"DP_QC_TRACEBOX",					1,	NULL, {"tracebox"}},
	{"DP_QC_TRACETOSS"},
	{"DP_QC_TRACE_MOVETYPE_HITMODEL"},
	{"DP_QC_TRACE_MOVETYPE_WORLDONLY"},
	{"DP_QC_TRACE_MOVETYPES"},		//this one is just a lame excuse to add annother extension...
	{"DP_QC_UNLIMITEDTEMPSTRINGS",		0,	NULL, {NULL}, "Supersedes DP_QC_MULTIPLETEMPSTRINGS, superseded by FTE_QC_PERSISTENTTEMPSTRINGS. Specifies that all temp strings will be valid at least until the QCVM returns."},
	{"DP_QC_URI_ESCAPE",				2,	NULL, {"uri_escape", "uri_unescape"}},
#ifdef WEBCLIENT
	{"DP_QC_URI_GET",					1,	NULL, {"uri_get"}},
	{"DP_QC_URI_POST",					1,	NULL, {"uri_get"}},
#endif
	{"DP_QC_VECTOANGLES_WITH_ROLL"},
	{"DP_QC_VECTORVECTORS",				1,	NULL, {"vectorvectors"}},
	{"DP_QC_WHICHPACK",					1,	NULL, {"whichpack"}},
	{"DP_QUAKE2_MODEL"},
	{"DP_QUAKE2_SPRITE"},
	{"DP_QUAKE3_MODEL"},
	{"DP_REGISTERCVAR",					1,	NULL, {"registercvar"}},
	{"DP_SND_STEREOWAV"},
	{"DP_SND_OGGVORBIS"},
	{"DP_SOLIDCORPSE"},
	{"DP_SPRITE32"},				//hmm... is it legal to advertise this one?
	{"DP_SV_BOTCLIENT",					2,	NULL, {"spawnclient", "clienttype"}},
	{"DP_SV_CLIENTCOLORS",				0,	NULL, {NULL}, "Provided only for compatibility with DP."},
	{"DP_SV_CLIENTNAME",				0,	NULL, {NULL}, "Provided only for compatibility with DP."},
	{"DP_SV_DRAWONLYTOCLIENT"},
	{"DP_SV_DROPCLIENT",				1,	NULL, {"dropclient"}, "Equivelent to quakeworld's stuffcmd(self,\"disconnect\\n\"); hack"},
	{"DP_SV_EFFECT",					1,	NULL, {"effect"}},
	{"DP_SV_EXTERIORMODELFORCLIENT"},
	{"DP_SV_NODRAWTOCLIENT"},		//I prefer my older system. Guess I might as well remove that older system at some point.
	{"DP_SV_PLAYERPHYSICS",				0,	NULL, {NULL}, "Allows reworking parts of NQ player physics. USE AT OWN RISK - this necessitates NQ physics and is thus guarenteed to break prediction."},
//	{"DP_SV_POINTPARTICLES",			3,	NULL, {"particleeffectnum", "pointparticles", "trailparticles"}, "Specifies that pointparticles (and trailparticles) exists in ssqc as well as csqc (and that dp's trailparticles argument fuckup will normally work). ssqc values can be passed to csqc for use, the reverse is not true. Does NOT mean that DP's effectinfo.txt is supported, only that ssqc has functionality equivelent to csqc."},
	{"DP_SV_POINTSOUND",				1,	NULL, {"pointsound"}},
	{"DP_SV_PRECACHEANYTIME",			0,	NULL, {NULL}, "Specifies that the various precache builtins can be called at any time. WARNING: precaches are sent reliably while sound events, modelindexes, and particle events are not. This can mean sounds and particles might not work the first time around, or models may take a while to appear (after the reliables are received and the model is loaded from disk). Always attempt to precache a little in advance in order to reduce these issues (preferably at the start of the map...)"},
	{"DP_SV_SETCOLOR"},
	{"DP_SV_SPAWNFUNC_PREFIX"},
	{"DP_SV_WRITEPICTURE",				1,	NULL, {"WritePicture"}},
	{"DP_SV_WRITEUNTERMINATEDSTRING",	1,	NULL, {"WriteUnterminatedString"}},
	{"DP_TE_BLOOD",						1,	NULL, {"te_blood"}},
	{"_DP_TE_BLOODSHOWER",				1,	NULL, {"te_bloodshower"}},
	{"DP_TE_CUSTOMFLASH",				1,	NULL, {"te_customflash"}},
	{"DP_TE_EXPLOSIONRGB",				1,	NULL, {"te_explosionrgb"}},
	{"_DP_TE_FLAMEJET",					1,	NULL, {"te_flamejet"}},
	{"DP_TE_PARTICLECUBE",				1,	NULL, {"te_particlecube"}},
	{"DP_TE_PARTICLERAIN",				1,	NULL, {"te_particlerain"}},
	{"DP_TE_PARTICLESNOW",				1,	NULL, {"te_particlesnow"}},
	{"_DP_TE_PLASMABURN",				1,	NULL, {"te_plasmaburn"}},
	{"_DP_TE_QUADEFFECTS1",				4,	NULL, {"te_gunshotquad", "te_spikequad", "te_superspikequad", "te_explosionquad"}},
	{"DP_TE_SMALLFLASH",				1,	NULL, {"te_smallflash"}},
	{"DP_TE_SPARK",						1,	NULL, {"te_spark"}},
	{"DP_TE_STANDARDEFFECTBUILTINS",	14,	NULL, {	"te_gunshot", "te_spike", "te_superspike", "te_explosion", "te_tarexplosion", "te_wizspike", "te_knightspike",
													"te_lavasplash", "te_teleport", "te_explosion2", "te_lightning1", "te_lightning2", "te_lightning3", "te_beam"}},
	{"DP_VIEWZOOM"},
	{"EXT_BITSHIFT",					1,	NULL, {"bitshift"}},
	{"EXT_DIMENSION_VISIBILITY"},
	{"EXT_DIMENSION_PHYSICS"},
	{"EXT_DIMENSION_GHOST"},
	{"FRIK_FILE",						11, NULL, {"stof", "fopen","fclose","fgets","fputs","strlen","strcat","substring","stov","strzone","strunzone"}},
	{"FTE_CALLTIMEOFDAY",				1,	NULL, {"calltimeofday"}, "Replication of mvdsv functionality (call calltimeofday to cause 'timeofday' to be called, with arguments that can be saved off to a global). Generally strftime is simpler to use."},
	{"FTE_CSQC_ALTCONSOLES",			4,	NULL, {"con_getset", "con_printf", "con_draw", "con_input"}, "The engine tracks multiple consoles. These may or may not be directly visible to the user."},
	{"FTE_CSQC_BASEFRAME",				0,  NULL, {NULL}, "Specifies that .basebone, .baseframe2, .baselerpfrac, baseframe1time, etc exist in csqc. These fields affect all bones in the entity's model with a lower index than the .basebone field, allowing you to give separate control to the legs of a skeletal model, without affecting the torso animations."},
#ifdef HALFLIFEMODELS
	{"FTE_CSQC_HALFLIFE_MODELS"},		//hl-specific skeletal model control
#endif
	{"FTE_CSQC_SERVERBROWSER",			12,	NULL, {	"gethostcachevalue", "gethostcachestring", "resethostcachemasks", "sethostcachemaskstring", "sethostcachemasknumber",
													"resorthostcache", "sethostcachesort", "refreshhostcache", "gethostcachenumber", "gethostcacheindexforkey",
													"addwantedhostcachekey", "getextresponse"}},	//normally only available to the menu. this also adds them to csqc.
	{"FTE_CSQC_SKELETONOBJECTS",		15,	NULL, {	"skel_create", "skel_build", "skel_get_numbones", "skel_get_bonename", "skel_get_boneparent", "skel_find_bone",
													"skel_get_bonerel", "skel_get_boneabs", "skel_set_bone", "skel_mul_bone", "skel_mul_bones", "skel_copybones",
													"skel_delete", "frameforname", "frameduration"}, "Provides container objects for skeletal bone data, which can be modified on a per bone basis if needed. This allows you to dynamically generate animations (or just blend them with greater customisation) instead of being limited to a single animation or two."},
	{"FTE_CSQC_RAWIMAGES",				2,	NULL, {"r_uploadimage","r_readimage"}, "Provides raw rgba image access to csqc. With this, the csprogs can read textures into qc-accessible memory, modify it, and then upload it to the renderer."},
	{"FTE_CSQC_RENDERTARGETS",			0,	NULL, {NULL}, "VF_RT_DESTCOLOUR exists and can be used to redirect any rendering to a texture instead of the screen."},
	{"FTE_CSQC_REVERB",					1,	NULL, {"setup_reverb"}, "Specifies that the mod can create custom reverb effects. Whether they will actually be used or not depends upon the sound driver."},
	{"FTE_CSQC_WINDOWCAPTION",			1,	NULL, {"setwindowcaption"}, "Provides csqc with the ability to change the window caption as displayed when running windowed or in the task bar when switched out."},
	{"FTE_ENT_SKIN_CONTENTS",			0,	NULL, {NULL}, "self.skin = CONTENTS_WATER; makes a brush entity into water. use -16 for a ladder."},
	{"FTE_ENT_UNIQUESPAWNID"},
	{"FTE_EXTENDEDTEXTCODES"},
	{"FTE_FORCESHADER",					1,	NULL, {"shaderforname"}, "Allows csqc to override shaders on models with an explicitly named replacement. Also allows you to define shaders with a fallback if it does not exist on disk."},	//I'd rename this to _CSQC_ but it does technically provide this builtin to menuqc too, not that the forceshader entity field exists there... but whatever.
	{"FTE_FORCEINFOKEY",				1,	NULL, {"forceinfokey"},	"Provides an easy way to change a user's userinfo from the server."},
	{"FTE_GFX_QUAKE3SHADERS",			0,	NULL, {NULL},	"specifies that the engine has full support for vanilla quake3 shaders"},
	{"FTE_GFX_REMAPSHADER",				0,	NULL, {NULL},	"With the raw power of stuffcmds, the r_remapshader console command is exposed! This mystical command can be used to remap any shader to another. Remapped shaders that specify $diffuse etc in some form will inherit the textures implied by the surface."},
//	{"FTE_GFX_IQM_HITMESH",				0,	NULL, {NULL},	"Supports hitmesh iqm extensions. Also supports geomsets and embedded events."},
//	{"FTE_GFX_MODELEVENTS",				1,	NULL, {"processmodelevents", "getnextmodelevent", "getmodeleventidx"},	"Provides a query for per-animation events in model files, including from progs/foo.mdl.events files."},
	{"FTE_ISBACKBUFFERED",				1,	NULL, {"isbackbuffered"}, "Allows you to check if a client has too many reliable messages pending."},
	{"FTE_MEMALLOC",					4,	NULL, {"memalloc", "memfree", "memcpy", "memfill8"}, "Allows dynamically allocating memory. Use pointers to access this memory. Memory will not be saved into saved games."},
#ifdef HAVE_MEDIA_DECODER
	#if defined(_WIN32) && !defined(WINRT)
	{"FTE_MEDIA_AVI",					0,	NULL, {NULL}, "playfilm command supports avi files."},
	#endif
	#ifdef Q2CLIENT
	{"FTE_MEDIA_CIN",					0,	NULL, {NULL}, "playfilm command supports q2 cin files."},
	#endif
	#ifdef Q3CLIENT
	{"FTE_MEDIA_ROQ",					0,	NULL, {NULL}, "playfilm command supports q3 roq files."},
	#endif
#endif
	{"FTE_MULTIPROGS",					5,	NULL, {"externcall", "addprogs", "externvalue", "externset", "instr"}, "Multiple progs.dat files can be loaded inside the same qcvm. Insert new ones with addprogs inside the 'init' function, and use externvalue+externset to rewrite globals (and hook functions) to link them together. Note that the result is generally not very clean unless you carefully design for it beforehand."},	//multiprogs functions are available.
	{"FTE_MULTITHREADED",				3,	NULL, {"sleep", "fork", "abort"}, "Faux multithreading, allowing multiple contexts to run in sequence."},
	{"FTE_MVD_PLAYERSTATS",				0,	NULL, {NULL}, "In csqc, getplayerstat can be used to query any player's stats when playing back MVDs. isdemo will return 2 in this case."},
#ifdef SERVER_DEMO_PLAYBACK
	{"FTE_MVD_PLAYBACK",				NOBI	"The server itself is able to play back MVDs."},
#endif
#ifdef SVCHAT
	{"FTE_NPCCHAT",						1,	NULL, {"chat"}},	//server looks at chat files. It automagically branches through calling qc functions as requested.
#endif
#ifdef PSET_SCRIPT
	{"FTE_PART_SCRIPT",					0,	NULL, {NULL}, "Specifies that the r_particledesc cvar can be used to select a list of particle effects to load from particles/*.cfg, the format of which is documented elsewhere."},
	{"FTE_PART_NAMESPACES",				0,	NULL, {NULL}, "Specifies that the engine can use foo.bar to load effect foo from particle description bar. When used via ssqc, this should cause the client to download whatever effects as needed."},
#ifndef NOLEGACY
	{"FTE_PART_NAMESPACE_EFFECTINFO",	0,	NULL, {NULL}, "Specifies that effectinfo.bar can load effects from effectinfo.txt for DP compatibility."},
#endif
#endif
	{"FTE_QC_BASEFRAME",				0,  NULL, {NULL}, "Specifies that .basebone and .baseframe exist in ssqc. These fields affect all bones in the entity's model with a lower index than the .basebone field, allowing you to give separate control to the legs of a skeletal model, without affecting the torso animations, from ssqc."},
	{"FTE_QC_FILE_BINARY",				4,	NULL, {"fread","fwrite","fseek","fsize"}, "Extends FRIK_FILE with binary read+write, as well as allowing seeking. Requires pointers."},
	{"FTE_QC_CHANGELEVEL_HUB",			0,	NULL, {NULL}, "Adds an extra argument to changelevel which is carried over to the next map in the 'spawnspot' global. Maps will be saved+reloaded until the extra argument is omitted again, purging all saved maps. Saved games will contain a copy of each preserved map. parm1-parm64 globals can be used, giving more space to transfer more player data."},
	{"FTE_QC_CHECKCOMMAND",				1,	NULL, {"checkcommand"}, "Provides a way to test if a console command exists, and whether its a command/alias/cvar. Does not say anything about the expected meanings of any arguments or values."},
	{"FTE_QC_CHECKPVS",					1,	NULL, {"checkpvs"}},
	{"FTE_QC_CROSSPRODUCT",				1,	NULL, {"crossproduct"}},
	{"FTE_QC_FS_SEARCH_SIZEMTIME",		2,	NULL, {"search_getfilesize", "search_getfilemtime"}},
	{"FTE_QC_HARDWARECURSORS",			0,	NULL, {NULL}, "setcursormode exists in both csqc+menuqc, and accepts additional arguments to specify a cursor image to use when this module has focus. If the image exceeds hardware limits (or hardware cursors are unsupported), it will be emulated using regular draws - this at least still avoids conflicting cursors as only one will ever be used, even if console+menu+csqc are all overlayed."},
	{"FTE_QC_HASHTABLES",				6,	NULL, {"hash_createtab", "hash_destroytab", "hash_add", "hash_get", "hash_delete", "hash_getkey"}, "Provides efficient string-based lookups."},
	{"FTE_QC_INTCONV",					6,	NULL, {"stoi", "itos", "stoh", "htos", "itof", "ftoi"}, "Provides string<>int conversions, including hex representations."},
	{"FTE_QC_MATCHCLIENTNAME",			1,	NULL, {"matchclientname"}},
//	{"FTE_QC_MESHOBJECTS",				0,	NULL, {"mesh_create", "mesh_build", "mesh_getvertex", "mesh_getindex", "mesh_setvertex", "mesh_setindex", "mesh_destroy"}, "Provides qc with the ability to create its own meshes."},
	{"FTE_QC_PAUSED"},
#ifdef QCGC
	{"FTE_QC_PERSISTENTTEMPSTRINGS",	NOBI	 "Supersedes DP_QC_MULTIPLETEMPSTRINGS. Temp strings are garbage collected automatically, and do not expire while they're still in use. This makes strzone redundant."},
#endif
#ifdef RAGDOLL
	{"FTE_QC_RAGDOLL_WIP",				1,	NULL, {"ragupdate", "skel_set_bone_world", "skel_mmap"}},
#endif
	{"FTE_QC_SENDPACKET",				1,	NULL, {"sendpacket"}, "Allows the use of out-of-band udp packets to/from other hosts. Includes the SV_ParseConnectionlessPacket event."},
	{"FTE_QC_STUFFCMDFLAGS",			1,	NULL, {"stuffcmdflags"}, "Variation on regular stuffcmd that gives control over how spectators/mvds should be treated."},
	{"FTE_QC_TRACETRIGGER"},
#ifdef Q2CLIENT
	{"FTE_QUAKE2_CLIENT",				0,	NULL, {NULL}, "This engine is able to act as a quake2 client"},
#endif
#ifdef Q2SERVER
	{"FTE_QUAKE2_SERVER",				0,	NULL, {NULL}, "This engine is able to act as a quake2 server"},
#endif
#ifdef Q3CLIENT
	{"FTE_QUAKE3_CLIENT",				0,	NULL, {NULL}, "This engine is able to act as a quake3 client"},
#endif
#ifdef Q3SERVER
	{"FTE_QUAKE3_SERVER",				0,	NULL, {NULL}, "This engine is able to act as a quake3 server"},
#endif
	{"FTE_SOLID_LADDER",				NOBI			"Allows a simple trigger to remove effects of gravity (solid 20). obsolete. will prolly be removed at some point as it is not networked properly. Use FTE_ENT_SKIN_CONTENTS"},

#ifdef SQL
	// serverside SQL functions for managing an SQL database connection
	{"FTE_SQL",							9, NULL, {"sqlconnect","sqldisconnect","sqlopenquery","sqlclosequery","sqlreadfield","sqlerror","sqlescape","sqlversion",
												  "sqlreadfloat"}, "Provides sql* builtins which can be used for sql database access"},
#ifdef USE_MYSQL
	{"FTE_SQL_MYSQL",					0, NULL, {NULL}, "SQL functionality is able to utilise mysql"},
#endif
#ifdef USE_SQLITE
	{"FTE_SQL_SQLITE",					0, NULL, {NULL}, "SQL functionality is able to utilise sqlite databases"},
#endif
#endif

	//eperimental advanced strings functions.
	//reuses the FRIK_FILE builtins (with substring extension)
	{"FTE_STRINGS",						17, NULL, {"stof", "strlen","strcat","substring","stov","strzone","strunzone",
												   "strstrofs", "str2chr", "chr2str", "strconv", "infoadd", "infoget", "strncmp", "strcasecmp", "strncasecmp", "strpad"}, "Extra builtins (and additional behaviour) to make string manipulation easier"},
	{"FTE_SV_POINTPARTICLES",			3,	NULL, {"particleeffectnum", "pointparticles", "trailparticles"}, "Specifies that particleeffectnum, pointparticles, and trailparticles exist in ssqc as well as csqc. particleeffectnum acts as a precache, allowing ssqc values to be networked up with csqc for use. Use in combination with FTE_PART_SCRIPT+FTE_PART_NAMESPACES to use custom effects. This extension is functionally identical to the DP version, but avoids any misplaced assumptions about the format of the client's particle descriptions."},
	{"FTE_SV_REENTER"},
	{"FTE_TE_STANDARDEFFECTBUILTINS",	14,	NULL, {"te_gunshot", "te_spike", "te_superspike", "te_explosion", "te_tarexplosion", "te_wizspike", "te_knightspike", "te_lavasplash",
												   "te_teleport", "te_lightning1", "te_lightning2", "te_lightning3", "te_lightningblood", "te_bloodqw"}, "Provides builtins to replace writebytes, with a QW compatible twist."},
#ifdef TERRAIN
	{"FTE_TERRAIN_MAP",					1,	NULL, {"terrain_edit"}, "This engine supports .hmp files, as well as terrain embedded within bsp files."},
	{"FTE_RAW_MAP",						7,	NULL, {"brush_get","brush_create","brush_delete","brush_selected","brush_getfacepoints","brush_calcfacepoints","brush_findinvolume"}, "This engine supports directly loading .map files, as well as realtime editing of the various brushes."},
#endif


	{"KRIMZON_SV_PARSECLIENTCOMMAND",	3,	NULL, {"clientcommand", "tokenize", "argv"}, "SSQC's SV_ParseClientCommand function is able to handle client 'cmd' commands. The tokenizing parts also work in csqc."},	//very very similar to the mvdsv system.
	{"NEH_CMD_PLAY2"},
	{"NEH_RESTOREGAME"},
	//{"PRYDON_CLIENTCURSOR"},
	{"QSG_CVARSTRING",					1,	NULL, {"qsg_cvar_string"}},
	{"QW_ENGINE",						3,	NULL, {"infokey", "stof", "logfrag"}},	//warning: interpretation of .skin on players can be dodgy, as can some other QW features that differ from NQ.
	{"QWE_MVD_RECORD",					NOBI	"You can use the easyrecord command to record MVD demos serverside."},	//Quakeworld extended get the credit for this one. (mvdsv)
	{"TEI_MD3_MODEL"},
	{"TENEBRAE_GFX_DLIGHTS",			0, NULL,{NULL}, "Allows ssqc to attach rtlights to entities with various special properties."},
//	{"TQ_RAILTRAIL"},	//treat this as the ZQ style railtrails which the client already supports, okay so the preparse stuff needs strengthening.
	{"ZQ_MOVETYPE_FLY",					NOBI	"MOVETYPE_FLY works on players."},
	{"ZQ_MOVETYPE_NOCLIP",				NOBI	"MOVETYPE_NOCLIP works on players."},
	{"ZQ_MOVETYPE_NONE",				NOBI	"MOVETYPE_NONE works on players."},
//	{"ZQ_QC_PARTICLE"},	//particle builtin works in QW ( we don't mimic ZQ fully though)
	{"ZQ_VWEP",							1,	NULL, {"precache_vwep_model"}},


	{"ZQ_QC_STRINGS",					7, NULL, {"stof", "strlen","strcat","substring","stov","strzone","strunzone"}, "The strings-only subset of FRIK_FILE is supported."}	//a trimmed down FRIK_FILE.
};
unsigned int QSG_Extensions_count = sizeof(QSG_Extensions)/sizeof(QSG_Extensions[0]);
#endif