git.pond.sub.org Git - empserver/blob - src/lib/commands/foll.c

   1 /*
   2  *  Empire - A multi-player, client/server Internet based war game.
   3  *  Copyright (C) 1986-2000, Dave Pare, Jeff Bailey, Thomas Ruschak,
   4  *                           Ken Stevens, Steve McClure
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  *  ---
  21  *
  22  *  See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
  23  *  related information and legal notices. It is expected that any future
  24  *  projects/authors will amend these files as needed.
  25  *
  26  *  ---
  27  *
  28  *  foll.c: Set leader of a set of ships
  29  *
  30  *  Known contributors to this file:
  31  *     Robert Forsman
  32  */
  33
  34 #include <ctype.h>
  35 #include "misc.h"
  36 #include "player.h"
  37 #include "var.h"
  38 #include "ship.h"
  39 #include "xy.h"
  40 #include "nsc.h"
  41 #include "file.h"
  42 #include "nat.h"
  43 #include "commands.h"
  44 #include "optlist.h"
  45
  46 int
  47 foll(void)
  48 {
  49         struct shpstr ship;
  50         s_char  *cp;
  51         int     good,leader,count=0;
  52         coord   x,y;
  53         struct  nstr_item nstr;
  54         s_char  buf[1024];
  55
  56         if (!opt_SAIL) {
  57             pr("The SAIL option is not enabled, so this command is not valid.\n");
  58             return RET_FAIL;
  59         }
  60         if (!snxtitem(&nstr, EF_SHIP, player->argp[1]))
  61                 return RET_SYN;
  62         cp = getstarg(player->argp[2],"leader?", buf);
  63         if (cp==0) cp="";
  64         good = sscanf(cp,"%d",&leader);
  65         if  (!good)
  66           return RET_SYN;
  67         getship(leader,&ship);
  68         if (ship.shp_own!=player->cnum &&
  69             getrel(getnatp(ship.shp_own),player->cnum) < FRIENDLY)
  70           {
  71             pr("That ship won't let you follow.\n");
  72             return RET_FAIL;
  73           }
  74         x = ship.shp_x;
  75         y = ship.shp_y;
  76         while (nxtitem(&nstr, (s_char *)&ship)) {
  77                 if (!player->owner)
  78                         continue;
  79                 if ( ship.shp_x!=x || ship.shp_y!=y )
  80                   {
  81                     pr("Ship #%d not in same sector as #%d\n",ship.shp_uid,leader);
  82                     continue;
  83                   }
  84                 if (ship.shp_uid==leader)
  85                   {
  86                     pr("Ship #%d can't follow itself!\n",leader);
  87                     continue;
  88                   }
  89                 if ((ship.shp_autonav & AN_AUTONAV) && !(ship.shp_autonav & AN_STANDBY))
  90                   {
  91                     pr("Ship #%d has other orders!\n",ship.shp_uid);
  92                     continue;
  93                   }
  94                 count++;
  95                 ship.shp_mission = 0;
  96                 *ship.shp_path = 'f';
  97                 ship.shp_path[1] = 0;
  98 /*              sprintf(ship.shp_path,"f%d",leader);*/
  99                 ship.shp_follow = leader;
 100                 pr("Ship #%d follows #%d.\n",ship.shp_uid,leader);
 101                 putship(ship.shp_uid, &ship);
 102         }
 103         if (count == 0) {
 104                 if (player->argp[1])
 105                         pr("%s: No ship(s)\n", player->argp[1]);
 106                 else
 107                         pr("%s: No ship(s)\n", "");
 108                 return RET_FAIL;
 109         }else
 110                 pr("%d ship%s\n", count, splur(count));
 111         return RET_OK;
 112 }