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/* $Id: fow.c,v 1.8 2002/08/31 17:46:00 riq Exp $ */
/* Tenes Empanadas Graciela
*
* Copyright (C) 2002 Ricardo Quesada
*
* Author: Ricardo Calixto Quesada <riq@corest.com>
*
* 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; only version 2 of the License
*
* 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.
*/
/* Fog of War */
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include "server.h"
#include "fow.h"
TEG_STATUS fow_set_mode( BOOLEAN b )
{
if( JUEGO_EMPEZADO )
return TEG_STATUS_ERROR;
if( b!=0)
b=1;
g_game.fog_of_war = b;
return TEG_STATUS_SUCCESS;
}
BOOLEAN fow_can_player_see_country( PSPLAYER pJ, PCOUNTRY pP )
{
PLIST_ENTRY pL;
PCOUNTRY pcountry;
if( ! pJ || ! pP )
return FALSE;
pL = pJ->countries.Flink;
while( !IsListEmpty( &pJ->countries ) && (pL != &pJ->countries) ) {
pcountry = (PCOUNTRY) pL;
if( countries_eslimitrofe(pP->id, pcountry->id) )
return TRUE;
if( pP->id == pcountry->id )
return TRUE;
pL = LIST_NEXT(pL);
}
return FALSE;
}
TEG_STATUS fow_fill_with_boundaries( int country, char *buffer, int buf_len )
{
int i;
int first_time=1;
if( ! g_game.player_fow )
return TEG_STATUS_ERROR;
for( i=0; i < COUNTRIES_CANT; i++ )
{
if( i != country && g_countries[i].numjug != g_game.player_fow->numjug && countries_eslimitrofe( country, i ) )
{
char buf[1024];
if( first_time ) {
snprintf( buf, sizeof(buf)-1,"%s=%d,%d,%d", TOKEN_COUNTRY, i, g_countries[i].numjug, g_countries[i].ejercitos );
first_time = 0;
} else
snprintf( buf, sizeof(buf)-1,";%s=%d,%d,%d", TOKEN_COUNTRY, i, g_countries[i].numjug, g_countries[i].ejercitos );
strncat( buffer, buf, buf_len );
}
}
/* dont send, since I didnt modify the buffer */
if( first_time )
return TEG_STATUS_ERROR;
return TEG_STATUS_SUCCESS;
}
int fow_netall_printf( int country, char *format, ...)
{
va_list args;
char buf[PROT_MAX_LEN];
PLIST_ENTRY pLplayer = g_list_player.Flink;
PLIST_ENTRY pLcountry;
PSPLAYER pJ;
PCOUNTRY pP;
if( country < 0 || country >= COUNTRIES_CANT )
return -1;
va_start(args, format);
vsnprintf(buf, sizeof(buf) -1, format, args);
va_end(args);
buf[ sizeof(buf) -1 ] = 0;
while( !IsListEmpty( &g_list_player ) && (pLplayer != &g_list_player) ) {
pJ = (PSPLAYER) pLplayer;
if( pJ->fd > 0 && pJ->is_player )
{
pLcountry = pJ->countries.Flink;
/* check if he has a boundry country wih 'country' */
while( !IsListEmpty( &pJ->countries ) && (pLcountry != &pJ->countries) ) {
pP = (PCOUNTRY) pLcountry;
if( countries_eslimitrofe(pP->id, country) || pP->id == country )
{
net_print(pJ->fd, buf);
break;
}
pLcountry = LIST_NEXT(pLcountry);
}
}
pLplayer = LIST_NEXT( pLplayer );
}
return 0;
}
/*
* IMPORTANT: it is very important the user can't control the format
* in this function to prevent a format string vulnerability
*
* After format is parsed, 2 "%d" should be present, because they will
* be filled with src & dst
*/
int fow_2_netall_printf( int src, int dst, char *format, ...)
{
va_list args;
char buf[PROT_MAX_LEN];
PLIST_ENTRY pLplayer = g_list_player.Flink;
PLIST_ENTRY pLcountry;
PSPLAYER pJ;
PCOUNTRY pP;
int src_country;
int dst_country;
if( src<0 || src>=COUNTRIES_CANT || dst<0 || dst>=COUNTRIES_CANT)
return -1;
va_start(args, format);
vsnprintf(buf, sizeof(buf) -1, format, args);
va_end(args);
buf[ sizeof(buf) -1 ] = 0;
while( !IsListEmpty( &g_list_player ) && (pLplayer != &g_list_player) ) {
pJ = (PSPLAYER) pLplayer;
if( pJ->fd > 0 && pJ->is_player )
{
pLcountry = pJ->countries.Flink;
/* check if he has a boundry country wih src && dst */
src_country = -1;
dst_country = -1;
while( !IsListEmpty( &pJ->countries ) && (pLcountry != &pJ->countries) ) {
pP = (PCOUNTRY) pLcountry;
if(countries_eslimitrofe(pP->id, src) || pP->id == src)
src_country = src;
if(countries_eslimitrofe(pP->id, dst) || pP->id == dst)
dst_country = dst;
if( dst_country >= 0 && src_country >=0 )
break;
pLcountry = LIST_NEXT(pLcountry);
}
net_printf(pJ->fd, buf, src_country, dst_country);
}
pLplayer = LIST_NEXT( pLplayer );
}
return 0;
}
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