src/lib/commands/scut.c

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/*
 *  Empire - A multi-player, client/server Internet based war game.
 *  Copyright (C) 1986-2007, Dave Pare, Jeff Bailey, Thomas Ruschak,
 *                           Ken Stevens, Steve McClure
 *
 *  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
 *
 *  ---
 *
 *  See files README, COPYING and CREDITS in the root of the source
 *  tree for related information and legal notices.  It is expected
 *  that future projects/authors will amend these files as needed.
 *
 *  ---
 *
 *  scut.c: Scuttle ships, planes or land units
 * 
 *  Known contributors to this file:
 *     
 */

#include <config.h>

#include <ctype.h>
#include "commands.h"
#include "empobj.h"
#include "optlist.h"

static void scuttle_land(struct lndstr *);

int
scut(void)
{
    struct nstr_item ni;
    union empobj_storage item;
    int type;
    struct mchrstr *mp;
    char *p;
    char prompt[128];
    char buf[1024];

    if (!(p = getstarg(player->argp[1], "Ship, land, or plane? ", buf)))
        return RET_SYN;
    switch (*p) {
    case 's':
        type = EF_SHIP;
        break;
    case 'p':
        type = EF_PLANE;
        break;
    case 'l':
        type = EF_LAND;
        break;
    default:
        pr("Ships, land units, or planes only! (s, l, p)\n");
        return RET_SYN;
    }
    sprintf(prompt, "%s(s)? ", ef_nameof(type));
    if ((p = getstarg(player->argp[2], prompt, buf)) == 0)
        return RET_SYN;
    if (!snxtitem(&ni, type, p))
        return RET_SYN;
    if (p && (isalpha(*p) || (*p == '*') || (*p == '~') || issector(p)
              || islist(p))) {
        char y_or_n[80], bbuf[80];

        if (type == EF_SHIP) {
            if (*p == '*')
                sprintf(bbuf, "all ships");
            else if (*p == '~')
                sprintf(bbuf, "all unassigned ships");
            else if (issector(p))
                sprintf(bbuf, "all ships in %s", p);
            else if (isalpha(*p))
                sprintf(bbuf, "fleet %c", *p);
            else
                sprintf(bbuf, "ships %s", p);
        } else if (type == EF_LAND) {
            if (*p == '*')
                sprintf(bbuf, "all land units");
            else if (*p == '~')
                sprintf(bbuf, "all unassigned land units");
            else if (issector(p))
                sprintf(bbuf, "all units in %s", p);
            else if (isalpha(*p))
                sprintf(bbuf, "army %c", *p);
            else
                sprintf(bbuf, "units %s", p);
        } else {
            if (*p == '*')
                sprintf(bbuf, "all planes");
            else if (*p == '~')
                sprintf(bbuf, "all unassigned planes");
            else if (issector(p))
                sprintf(bbuf, "all planes in %s", p);
            else if (isalpha(*p))
                sprintf(bbuf, "wing %c", *p);
            else
                sprintf(bbuf, "planes %s", p);
        }
        sprintf(y_or_n, "Really scuttle %s? ", bbuf);
        if (!confirm(y_or_n))
            return RET_FAIL;
    }
    while (nxtitem(&ni, &item)) {
        if (!player->owner)
            continue;
        if (opt_MARKET) {
            if (ontradingblock(type, &item.ship)) {
                pr("You cannot scuttle an item on the trading block!\n");
                continue;
            }
        }

        if (type == EF_SHIP) {
            mp = &mchr[(int)item.ship.shp_type];
            if (opt_TRADESHIPS) {
                if (mp->m_flags & M_TRADE)
                    if (!scuttle_tradeship(&item.ship, 1))
                        continue;
            }
            pr("%s", prship(&item.ship));
            scuttle_ship(&item.ship);
        } else if (type == EF_LAND) {
            if (item.land.lnd_ship >= 0) {
                pr("%s is on a ship, and cannot be scuttled!\n",
                   prland(&item.land));
                continue;
            }
            pr("%s", prland(&item.land));
            scuttle_land(&item.land);
        } else {
            pr("%s", prplane(&item.plane));
            if (item.plane.pln_ship >= 0) {
                struct shpstr ship;

                getship(item.plane.pln_ship, &ship);
                take_plane_off_ship(&item.plane, &ship);
            }
            item.plane.pln_effic = 0;
            putplane(item.plane.pln_uid, &item.plane);
        }
        pr(" scuttled in %s\n",
           xyas(item.ship.shp_x, item.ship.shp_y, player->cnum));
    }

    return RET_OK;
}

int
scuttle_tradeship(struct shpstr *sp, int interactive)
{
    float cash = 0;
    float ally_cash = 0;
    int dist;
    struct sctstr sect;
    struct mchrstr *mp;
    struct natstr *np;
    char buf[512];
    struct natstr *natp;

    mp = &mchr[(int)sp->shp_type];
    getsect(sp->shp_x, sp->shp_y, &sect);
    if (sect.sct_own && sect.sct_type == SCT_HARBR) {
        dist = mapdist(sp->shp_x, sp->shp_y,
                       sp->shp_orig_x, sp->shp_orig_y);
        /* Don't disclose distance to to pirates */
        if (sp->shp_own == sp->shp_orig_own) {
            if (interactive)
                pr("%s has gone %d sects\n", prship(sp), dist);
            else
                wu(0, sp->shp_own, "%s has gone %d sects\n",
                   prship(sp), dist);
        }
        if (dist < trade_1_dist)
            cash = 0;
        else if (dist < trade_2_dist)
            cash = 1.0 + trade_1 * dist;
        else if (dist < trade_3_dist)
            cash = 1.0 + trade_2 * dist;
        else
            cash = 1.0 + trade_3 * dist;
        cash *= mp->m_cost;
        cash *= sp->shp_effic / 100.0;

        if (sect.sct_own != sp->shp_own) {
            ally_cash = cash * trade_ally_cut;
            cash *= (1.0 + trade_ally_bonus);
        }
    }

    if (!interactive && cash) {
        natp = getnatp(sp->shp_own);
        natp->nat_money += cash;
        putnat(natp);
        wu(0, sp->shp_own, "You just made $%d.\n", (int)cash);
    } else if (!cash && !interactive) {
        wu(0, sp->shp_own, "Unfortunately, you make $0 on this trade.\n");
    } else if (cash && interactive) {
        player->dolcost -= cash;
    } else if (interactive && sp->shp_own == sp->shp_orig_own) {
        pr("You won't get any money if you scuttle in %s!",
           xyas(sp->shp_x, sp->shp_y, player->cnum));
        sprintf(buf, "Are you sure you want to scuttle %s? ", prship(sp));
        return confirm(buf);
    }

    if (ally_cash) {
        np = getnatp(sect.sct_own);
        np->nat_money += ally_cash;
        putnat(np);
        wu(0, sect.sct_own,
           "Trade with %s nets you $%d at %s\n",
           cname(sp->shp_own),
           (int)ally_cash, xyas(sect.sct_x, sect.sct_y, sect.sct_own));
        if (sp->shp_own != sp->shp_orig_own)
            nreport(sp->shp_own, N_PIRATE_TRADE, sp->shp_orig_own, 1);
        else
            nreport(sp->shp_own, N_TRADE, sect.sct_own, 1);
    } else if (sp->shp_own != sp->shp_orig_own)
        nreport(sp->shp_own, N_PIRATE_KEEP, sp->shp_orig_own, 1);

    return 1;
}

void
scuttle_ship(struct shpstr *sp)
{
    struct nstr_item ni;
    struct sctstr sect;
    struct plnstr plane;
    struct lndstr land;

    getsect(sp->shp_x, sp->shp_y, &sect);
    snxtitem_all(&ni, EF_PLANE);
    while (nxtitem(&ni, &plane)) {
        if (plane.pln_own == 0)
            continue;
        if (plane.pln_ship == sp->shp_uid) {
            plane.pln_ship = -1;
            if (sect.sct_own != sp->shp_own) {
                wu(0, plane.pln_own, "Plane %d scuttled in %s\n",
                   plane.pln_uid,
                   xyas(plane.pln_x, plane.pln_y, plane.pln_own));
                plane.pln_effic = 0;
            } else {
                wu(0, plane.pln_own,
                   "Plane %d transferred off ship %d to %s\n",
                   plane.pln_uid, sp->shp_uid,
                   xyas(plane.pln_x, plane.pln_y, plane.pln_own));
            }
            putplane(plane.pln_uid, &plane);
        }
    }
    snxtitem_all(&ni, EF_LAND);
    while (nxtitem(&ni, &land)) {
        if (land.lnd_own == 0)
            continue;
        if (land.lnd_ship == sp->shp_uid) {
            land.lnd_ship = -1;
            if (sect.sct_own == sp->shp_own) {
                wu(0, land.lnd_own,
                   "Land unit %d transferred off ship %d to %s\n",
                   land.lnd_uid, sp->shp_uid,
                   xyas(land.lnd_x, land.lnd_y, land.lnd_own));
                putland(land.lnd_uid, &land);
            } else
                scuttle_land(&land);
        }
    }
    sp->shp_effic = 0;
    putship(sp->shp_uid, sp);
}

static void
scuttle_land(struct lndstr *lp)
{
    struct nstr_item ni;
    struct sctstr sect;
    struct plnstr plane;
    struct lndstr land;

    getsect(lp->lnd_x, lp->lnd_y, &sect);
    snxtitem_all(&ni, EF_PLANE);
    while (nxtitem(&ni, &plane)) {
        if (plane.pln_own == 0)
            continue;
        if (plane.pln_land == lp->lnd_uid) {
            plane.pln_land = -1;
            if (sect.sct_own != lp->lnd_own) {
                wu(0, plane.pln_own, "Plane %d scuttled in %s\n",
                   plane.pln_uid,
                   xyas(plane.pln_x, plane.pln_y, plane.pln_own));
                plane.pln_effic = 0;
            } else {
                wu(0, plane.pln_own,
                   "Plane %d transferred off unit %d to %s\n",
                   plane.pln_uid, lp->lnd_uid,
                   xyas(plane.pln_x, plane.pln_y, plane.pln_own));
            }
            putplane(plane.pln_uid, &plane);
        }
    }
    snxtitem_all(&ni, EF_LAND);
    while (nxtitem(&ni, &land)) {
        if (land.lnd_own == 0)
            continue;
        if (land.lnd_land == lp->lnd_uid) {
            land.lnd_land = -1;
            if (sect.sct_own == lp->lnd_own) {
                wu(0, land.lnd_own,
                   "Land unit %d transferred off unit %d to %s\n",
                   land.lnd_uid, lp->lnd_uid,
                   xyas(land.lnd_x, land.lnd_y, land.lnd_own));
                putland(land.lnd_uid, &land);
            } else
                scuttle_land(&land);
        }
    }
    lp->lnd_effic = 0;
    putland(lp->lnd_uid, lp);
}

---