l_bsp_ent.cpp

/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena source code 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.

Quake III Arena source code 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 Foobar; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

#include "l_cmd.h"
#include "l_math.h"
#include "l_mem.h"
#include "l_log.h"
#include "l_script.h"
#include "l_bsp_ent.h"

#define	MAX_KEY		32
#define	MAX_VALUE	1024

int num_entities;
entity_t	entities[MAX_MAP_ENTITIES];

void StripTrailing(char *e)
{
	char	*s;

	s = e + strlen(e)-1;
	while (s >= e && *s <= 32)
	{
		*s = 0;
		s--;
	}
}

/*
=================
ParseEpair
=================
*/
epair_t *ParseEpair(script_t *script)
{

	epair_t *e = (epair_t*)GetMemory(sizeof(epair_t));
	memset (e, 0, sizeof(epair_t));
	
	token_t token;
	PS_ExpectAnyToken(script, &token);
	StripDoubleQuotes(token.string);
	if (strlen(token.string) >= MAX_KEY-1)
		Error ("ParseEpair: token %s too long", token.string);
	e->key = copystring(token.string);
	PS_ExpectAnyToken(script, &token);
	StripDoubleQuotes(token.string);
	if (strlen(token.string) >= MAX_VALUE-1)
		Error ("ParseEpair: token %s too long", token.string);
	e->value = copystring(token.string);

	// strip trailing spaces
	StripTrailing(e->key);
	StripTrailing(e->value);

	return e;
} //end of the function ParseEpair


/*
================
ParseEntity
================
*/
qboolean	ParseEntity(script_t *script)
{
	epair_t *e;
	entity_t	*mapent;
	token_t token;

	if (!PS_ReadToken(script, &token))
		return qfalse;

	if (strcmp(token.string, "{"))
		Error ("ParseEntity: { not found");
	
	if (num_entities == MAX_MAP_ENTITIES)
		Error ("num_entities == MAX_MAP_ENTITIES");

	mapent = &entities[num_entities];
	num_entities++;

	do
	{
		if (!PS_ReadToken(script, &token))
			Error ("ParseEntity: EOF without closing brace");
		if (!strcmp(token.string, "}") )
			break;
		PS_UnreadLastToken(script);
		e = ParseEpair(script);
		e->next = mapent->epairs;
		mapent->epairs = e;
	} while (1);
	
	return qtrue;
} //end of the function ParseEntity


void 	SetKeyValue (entity_t *ent, const char *key, const char *value)
{
	epair_t	*ep;
	
	for (ep=ent->epairs ; ep ; ep=ep->next)
		if (!strcmp (ep->key, key) )
		{
			FreeMemory(ep->value);
			ep->value = copystring(value);
			return;
		}
	ep = (epair_t*)GetMemory(sizeof(*ep));
	ep->next = ent->epairs;
	ent->epairs = ep;
	ep->key = copystring(key);
	ep->value = copystring(value);
}

const char 	*ValueForKey (const entity_t *ent, const char *key)
{
	const epair_t	*ep;
	
	for (ep=ent->epairs ; ep ; ep=ep->next)
		if (!strcmp (ep->key, key) )
			return ep->value;
	return "";
}

vec_t	FloatForKey (entity_t *ent, const char *key)
{
	const char	*k = ValueForKey (ent, key);
	return atof(k);
}

void 	GetVectorForKey (const entity_t *ent, const char *key, vec3_t vec)
{
	const char	*k;
	double	v1, v2, v3;

	k = ValueForKey (ent, key);
// scanf into doubles, then assign, so it is vec_t size independent
	v1 = v2 = v3 = 0;
	sscanf (k, "%lf %lf %lf", &v1, &v2, &v3);
	vec[0] = v1;
	vec[1] = v2;
	vec[2] = v3;
}