pr_cmds.c

quake1 dos源代码最新版本

/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#include "quakedef.h"

#define	RETURN_EDICT(e) (((int *)pr_globals)[OFS_RETURN] = EDICT_TO_PROG(e))

#define PR_MAX_TEMPSTRING 2048	// 2001-10-25 Enhanced temp string handling by Maddes

memzone_t	*zone_progstrings;	// 2001-09-20 QuakeC string zone by Maddes

// 2001-10-20 Extension System by LordHavoc/Maddes  start
char *pr_extensions[] =
{
// add the extension names here, syntax: "extensionname",
	"TIMESCALE",	// 2001-10-20 TIMESCALE extension by Tomaz/Maddes
// 2001-09-16 Quake 2 builtin functions by id/Maddes  start
	"DP_QC_ETOS",
	"DP_QC_CHANGEPITCH",
	"DP_QC_TRACETOSS",
// 2001-09-16 Quake 2 builtin functions by id/Maddes  end
// 2001-11-15 DarkPlaces general builtin functions by LordHavoc  start
	"DP_REGISTERCVAR",	// 2001-09-18 New BuiltIn Function: cvar_create() by Maddes
	"DP_QC_SINCOSSQRTPOW",
	"DP_QC_TRACEBOX",
	"DP_QC_RANDOMVEC",
	"DP_QC_MINMAXBOUND",
	"DP_QC_FINDFLOAT",

	"DP_QC_COPYENTITY",
	"DP_SV_SETCOLOR",
	"DP_QC_FINDCHAIN",
	"DP_QC_FINDCHAINFLOAT",
// 2001-11-15 DarkPlaces general builtin functions by LordHavoc  end
};

int pr_numextensions = sizeof(pr_extensions)/sizeof(pr_extensions[0]);

qboolean extension_find(char *name)
{
	int	i;

	for (i=0; i < pr_numextensions; i++)
	{
		if (!Q_strcasecmp(pr_extensions[i], name))
			return true;
	}
	return false;
}

/*
=================
PF_extension_find

returns true if the extension is supported by the server

float extension_find(string name)
=================
*/
void PF_extension_find (void)
{
	G_FLOAT(OFS_RETURN) = extension_find(G_STRING(OFS_PARM0));
}
// 2001-10-20 Extension System by LordHavoc/Maddes  end

/*
===============================================================================

						BUILT-IN FUNCTIONS

===============================================================================
*/

char	pr_varstring_temp[PR_MAX_TEMPSTRING];	// 2001-10-25 Enhanced temp string handling by Maddes

char *PF_VarString (int	first)
{
	int		i;
// 2001-10-25 Enhanced temp string handling by Maddes  start
/*
	static char out[256];

	out[0] = 0;
	for (i=first ; i<pr_argc ; i++)
	{
		strcat (out, G_STRING((OFS_PARM0+i*3)));
	}
	return out;
*/
	int		maxlen;
	char	*add;

	pr_varstring_temp[0] = 0;
	for (i=first ; i<pr_argc ; i++)
	{
		maxlen = PR_MAX_TEMPSTRING - strlen(pr_varstring_temp) - 1;	// -1 is EndOfString
		add = G_STRING((OFS_PARM0+i*3));
		if (maxlen > strlen(add))
		{
			strcat (pr_varstring_temp, add);
		}
		else
		{
			strncat (pr_varstring_temp, add, maxlen);
			pr_varstring_temp[PR_MAX_TEMPSTRING-1] = 0;
			break;	// can stop here
		}
	}
	return pr_varstring_temp;
// 2001-10-25 Enhanced temp string handling by Maddes  end
}


/*
=================
PF_error

This is a TERMINAL error, which will kill off the entire server.
Dumps self.

error(value)
=================
*/
void PF_error (void)
{
	char	*s;
	edict_t	*ed;

	s = PF_VarString(0);
	Con_Printf ("======SERVER ERROR in %s:\n%s\n"
	,pr_strings + pr_xfunction->s_name,s);
	ed = PROG_TO_EDICT(pr_global_struct->self);
	ED_Print (ed);

	Host_Error ("Program error");
}

/*
=================
PF_objerror

Dumps out self, then an error message.  The program is aborted and self is
removed, but the level can continue.

objerror(value)
=================
*/
void PF_objerror (void)
{
	char	*s;
	edict_t	*ed;

	s = PF_VarString(0);
	Con_Printf ("======OBJECT ERROR in %s:\n%s\n", pr_strings + pr_xfunction->s_name, s);
	ed = PROG_TO_EDICT(pr_global_struct->self);
	ED_Print (ed);
	ED_Free (ed);

//	Host_Error ("Program error");	// 2001-12-16 Do not stop server on objerror
}



/*
==============
PF_makevectors

Writes new values for v_forward, v_up, and v_right based on angles
makevectors(vector)
==============
*/
void PF_makevectors (void)
{
	AngleVectors (G_VECTOR(OFS_PARM0), pr_global_struct->v_forward, pr_global_struct->v_right, pr_global_struct->v_up);
}

/*
=================
PF_setorigin

This is the only valid way to move an object without using the physics of the world (setting velocity and waiting).  Directly changing origin will not set internal links correctly, so clipping would be messed up.  This should be called when an object is spawned, and then only if it is teleported.

setorigin (entity, origin)
=================
*/
void PF_setorigin (void)
{
	edict_t	*e;
	float	*org;

	e = G_EDICT(OFS_PARM0);
	org = G_VECTOR(OFS_PARM1);
	VectorCopy (org, e->v.origin);
	SV_LinkEdict (e, false);
}


void SetMinMaxSize (edict_t *e, float *min, float *max, qboolean rotate)
{
	float	*angles;
	vec3_t	rmin, rmax;
	float	bounds[2][3];
	float	xvector[2], yvector[2];
	float	a;
	vec3_t	base, transformed;
	int		i, j, k, l;

	for (i=0 ; i<3 ; i++)
		if (min[i] > max[i])
			PR_RunError ("backwards mins/maxs");

	rotate = false;		// FIXME: implement rotation properly again

	if (!rotate)
	{
		VectorCopy (min, rmin);
		VectorCopy (max, rmax);
	}
	else
	{
	// find min / max for rotations
		angles = e->v.angles;

		a = angles[1]/180 * M_PI;

		xvector[0] = cos(a);
		xvector[1] = sin(a);
		yvector[0] = -sin(a);
		yvector[1] = cos(a);

		VectorCopy (min, bounds[0]);
		VectorCopy (max, bounds[1]);

		rmin[0] = rmin[1] = rmin[2] = 9999;
		rmax[0] = rmax[1] = rmax[2] = -9999;

		for (i=0 ; i<= 1 ; i++)
		{
			base[0] = bounds[i][0];
			for (j=0 ; j<= 1 ; j++)
			{
				base[1] = bounds[j][1];
				for (k=0 ; k<= 1 ; k++)
				{
					base[2] = bounds[k][2];

				// transform the point
					transformed[0] = xvector[0]*base[0] + yvector[0]*base[1];
					transformed[1] = xvector[1]*base[0] + yvector[1]*base[1];
					transformed[2] = base[2];

					for (l=0 ; l<3 ; l++)
					{
						if (transformed[l] < rmin[l])
							rmin[l] = transformed[l];
						if (transformed[l] > rmax[l])
							rmax[l] = transformed[l];
					}
				}
			}
		}
	}

// set derived values
	VectorCopy (rmin, e->v.mins);
	VectorCopy (rmax, e->v.maxs);
	VectorSubtract (max, min, e->v.size);

	SV_LinkEdict (e, false);
}

/*
=================
PF_setsize

the size box is rotated by the current angle

setsize (entity, minvector, maxvector)
=================
*/
void PF_setsize (void)
{
	edict_t	*e;
	float	*min, *max;

	e = G_EDICT(OFS_PARM0);
	min = G_VECTOR(OFS_PARM1);
	max = G_VECTOR(OFS_PARM2);
	SetMinMaxSize (e, min, max, false);
}


/*
=================
PF_setmodel

setmodel(entity, model)
=================
*/
void PF_setmodel (void)
{
	edict_t	*e;
	char	*m, **check;
	model_t	*mod;
	int		i;

	e = G_EDICT(OFS_PARM0);
	m = G_STRING(OFS_PARM1);

// check to see if model was properly precached
	for (i=0, check = sv.model_precache ; *check ; i++, check++)
		if (!strcmp(*check, m))
			break;

	if (!*check)
		PR_RunError ("no precache: %s\n", m);


	e->v.model = m - pr_strings;
	e->v.modelindex = i;	//SV_ModelIndex (m);

	mod = sv.models[(int)e->v.modelindex];	// Mod_ForName (m, true);

	if (mod)
		SetMinMaxSize (e, mod->mins, mod->maxs, true);
	else
		SetMinMaxSize (e, vec3_origin, vec3_origin, true);
}

/*
=================
PF_bprint

broadcast print to everyone on server

bprint(value)
=================
*/
void PF_bprint (void)
{
	char		*s;

	s = PF_VarString(0);
	SV_BroadcastPrintf ("%s", s);
}

/*
=================
PF_sprint

single print to a specific client

sprint(clientent, value)
=================
*/
void PF_sprint (void)
{
	char		*s;
	client_t	*client;
	int			entnum;

	entnum = G_EDICTNUM(OFS_PARM0);
	s = PF_VarString(1);

	if (entnum < 1 || entnum > svs.maxclients)
	{
		Con_Printf ("tried to sprint to a non-client\n");
		return;
	}

	client = &svs.clients[entnum-1];

	MSG_WriteChar (&client->message,svc_print);
	MSG_WriteString (&client->message, s );
}


/*
=================
PF_centerprint

single print to a specific client

centerprint(clientent, value)
=================
*/
void PF_centerprint (void)
{
	char		*s;
	client_t	*client;
	int			entnum;

	entnum = G_EDICTNUM(OFS_PARM0);
	s = PF_VarString(1);

	if (entnum < 1 || entnum > svs.maxclients)
	{
		Con_Printf ("tried to sprint to a non-client\n");
		return;
	}

	client = &svs.clients[entnum-1];

	MSG_WriteChar (&client->message,svc_centerprint);
	MSG_WriteString (&client->message, s );
}


/*
=================
PF_normalize

vector normalize(vector)
=================
*/
void PF_normalize (void)
{
	float	*value1;
	vec3_t	newvalue;
	float	new;

	value1 = G_VECTOR(OFS_PARM0);

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

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

	VectorCopy (newvalue, G_VECTOR(OFS_RETURN));
}

/*
=================
PF_vlen

scalar vlen(vector)
=================
*/
void PF_vlen (void)
{
	float	*value1;
	float	new;

	value1 = G_VECTOR(OFS_PARM0);

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

	G_FLOAT(OFS_RETURN) = new;
}

/*
=================
PF_vectoyaw

float vectoyaw(vector)
=================
*/
void PF_vectoyaw (void)
{
	float	*value1;
	float	yaw;

	value1 = G_VECTOR(OFS_PARM0);

	if (value1[1] == 0 && value1[0] == 0)
		yaw = 0;
	else
	{
		yaw = (int) (atan2(value1[1], value1[0]) * 180 / M_PI);
		if (yaw < 0)
			yaw += 360;
	}

	G_FLOAT(OFS_RETURN) = yaw;
}


/*
=================
PF_vectoangles

vector vectoangles(vector)
=================
*/
void PF_vectoangles (void)
{
	float	*value1;
	float	forward;
	float	yaw, pitch;

	value1 = G_VECTOR(OFS_PARM0);

	if (value1[1] == 0 && value1[0] == 0)
	{
		yaw = 0;
		if (value1[2] > 0)
			pitch = 90;
		else
			pitch = 270;
	}
	else
	{
		yaw = (int) (atan2(value1[1], value1[0]) * 180 / M_PI);
		if (yaw < 0)
			yaw += 360;

		forward = sqrt (value1[0]*value1[0] + value1[1]*value1[1]);
		pitch = (int) (atan2(value1[2], forward) * 180 / M_PI);
		if (pitch < 0)
			pitch += 360;
	}

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

/*
=================
PF_Random

Returns a number from 0>= num <= 1

random()
=================
*/
void PF_random (void)
{
	float		num;

	num = (rand ()&0x7fff) / ((float)0x7fff);

	G_FLOAT(OFS_RETURN) = num;
}

/*
=================
PF_particle

particle(origin, color, count)
=================
*/
void PF_particle (void)
{
	float		*org, *dir;
	float		color;
	float		count;

	org = G_VECTOR(OFS_PARM0);
	dir = G_VECTOR(OFS_PARM1);
	color = G_FLOAT(OFS_PARM2);
	count = G_FLOAT(OFS_PARM3);
	SV_StartParticle (org, dir, color, count);
}


/*
=================
PF_ambientsound

=================
*/
void PF_ambientsound (void)
{
	char		**check;
	char		*samp;
	float		*pos;
	float 		vol, attenuation;
	int			i, soundnum;

	pos = G_VECTOR (OFS_PARM0);
	samp = G_STRING(OFS_PARM1);
	vol = G_FLOAT(OFS_PARM2);
	attenuation = G_FLOAT(OFS_PARM3);