src/lib/commands/upgr.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.
 *
 *  ---
 *
 *  upgr.c: Upgrade tech of ships/planes/units
 * 
 *  Known contributors to this file:
 *     Dave Pare, 1986
 *     Steve McClure, 1996-2000
 */

#include <config.h>

#include "commands.h"
#include "land.h"
#include "plane.h"
#include "ship.h"

enum {
  UPGR_COST = 15,               /* how much avail and money to charge */
  UPGR_EFF = 35                 /* efficiency reduction */
};

static int lupgr(void);
static int pupgr(void);
static int supgr(void);

int
upgr(void)
{
    char *p;
    char buf[1024];

    if (!(p = getstarg(player->argp[1], "Ship, land, or plane? ", buf)))
        return RET_SYN;
    switch (*p) {
    case 's':
    case 'S':
        return supgr();
    case 'p':
    case 'P':
        return pupgr();
    case 'l':
    case 'L':
        return lupgr();
    default:
        break;
    }
    pr("Ships, land units or planes only!\n");
    return RET_SYN;
}

static int
lupgr(void)
{
    struct sctstr sect;
    struct natstr *natp;
    struct nstr_item ni;
    struct lndstr land;
    struct lchrstr *lp;
    int n;
    int tlev;
    int avail, cost;
    int rel;
    long cash;

    if (!snxtitem(&ni, EF_LAND, player->argp[2]))
        return RET_SYN;
    natp = getnatp(player->cnum);
    cash = natp->nat_money;
    tlev = (int)natp->nat_level[NAT_TLEV];
    n = 0;
    while (nxtitem(&ni, &land)) {
        if (land.lnd_own == 0)
            continue;
        getsect(land.lnd_x, land.lnd_y, &sect);
        if (sect.sct_own != player->cnum)
            continue;
        if (sect.sct_type != SCT_HEADQ || sect.sct_effic < 60)
            continue;
        rel = getrel(getnatp(land.lnd_own), sect.sct_own);
        if (rel < FRIENDLY && sect.sct_own != land.lnd_own) {
            pr("You are not on friendly terms with the owner of unit %d!\n",
               land.lnd_uid);
            continue;
        }
        n++;
        lp = &lchr[(int)land.lnd_type];
        avail = (LND_BLD_WORK(lp->l_lcm, lp->l_hcm) * UPGR_COST + 99) / 100;
        if (sect.sct_avail < avail) {
            pr("Not enough available work in %s to upgrade a %s\n",
               xyas(sect.sct_x, sect.sct_y, player->cnum), lp->l_name);
            pr(" (%d available work required)\n", avail);
            continue;
        }
        if (land.lnd_effic < 60) {
            pr("%s is too damaged to upgrade!\n", prland(&land));
            continue;
        }
        if (land.lnd_tech >= tlev) {
            pr("%s tech: %d, yours is only %d\n",
               prland(&land), land.lnd_tech, tlev);
            continue;
        }
        cost = lp->l_cost * UPGR_COST / 100;
        if (cost + player->dolcost > cash) {
            pr("You don't have enough money to upgrade %s!\n",
               prland(&land));
            continue;
        }

        sect.sct_avail -= avail;
        land.lnd_effic -= UPGR_EFF;
        lnd_set_tech(&land, tlev);
        land.lnd_harden = 0;
        land.lnd_mission = 0;

        putland(land.lnd_uid, &land);
        putsect(&sect);
        player->dolcost += cost;
        pr("%s upgraded to tech %d, at a cost of %d\n",
           prland(&land), land.lnd_tech, cost);
        if (land.lnd_own != player->cnum)
            wu(0, land.lnd_own,
               "%s upgraded by %s to tech %d, at a cost of %d\n",
               prland(&land), cname(player->cnum), land.lnd_tech,
               cost);
    }
    if (n == 0) {
        pr("No land units\n");
        return RET_SYN;
    }
    return RET_OK;
}

static int
supgr(void)
{
    struct sctstr sect;
    struct natstr *natp;
    struct nstr_item ni;
    struct shpstr ship;
    struct mchrstr *mp;
    int n;
    int tlev;
    int avail, cost;
    int rel;
    long cash;

    if (!snxtitem(&ni, EF_SHIP, player->argp[2]))
        return RET_SYN;
    natp = getnatp(player->cnum);
    cash = natp->nat_money;
    tlev = (int)natp->nat_level[NAT_TLEV];
    n = 0;
    while (nxtitem(&ni, &ship)) {
        if (ship.shp_own == 0)
            continue;
        getsect(ship.shp_x, ship.shp_y, &sect);
        if (sect.sct_own != player->cnum)
            continue;
        if (sect.sct_type != SCT_HARBR || sect.sct_effic < 60)
            continue;
        rel = getrel(getnatp(ship.shp_own), sect.sct_own);
        if (rel < FRIENDLY && sect.sct_own != ship.shp_own) {
            pr("You are not on friendly terms with the owner of ship %d!\n",
               ship.shp_uid);
            continue;
        }
        n++;
        mp = &mchr[(int)ship.shp_type];
        avail = (SHP_BLD_WORK(mp->m_lcm, mp->m_hcm) * UPGR_COST + 99) / 100;
        if (sect.sct_avail < avail) {
            pr("Not enough available work in %s to upgrade a %s\n",
               xyas(sect.sct_x, sect.sct_y, player->cnum), mp->m_name);
            pr(" (%d available work required)\n", avail);
            continue;
        }
        if (ship.shp_effic < 60) {
            pr("%s is too damaged to upgrade!\n", prship(&ship));
            continue;
        }
        if (ship.shp_tech >= tlev) {
            pr("%s tech: %d, yours is only %d\n",
               prship(&ship), ship.shp_tech, tlev);
            continue;
        }
        cost = mp->m_cost * UPGR_COST / 100;
        if (cost + player->dolcost > cash) {
            pr("You don't have enough money to upgrade %s!\n",
               prship(&ship));
            continue;
        }

        sect.sct_avail -= avail;
        ship.shp_effic -= UPGR_EFF;
        shp_set_tech(&ship, tlev);
        ship.shp_mission = 0;

        putship(ship.shp_uid, &ship);
        putsect(&sect);
        player->dolcost += cost;
        pr("%s upgraded to tech %d, at a cost of %d\n",
           prship(&ship), ship.shp_tech, cost);
        if (ship.shp_own != player->cnum)
            wu(0, ship.shp_own,
               "%s upgraded by %s to tech %d, at a cost of %d\n",
               prship(&ship), cname(player->cnum), ship.shp_tech,
               cost);
    }
    if (n == 0) {
        pr("No ships\n");
        return RET_SYN;
    }
    return RET_OK;
}

static int
pupgr(void)
{
    struct sctstr sect;
    struct natstr *natp;
    struct nstr_item ni;
    struct plnstr plane;
    struct plchrstr *pp;
    int n;
    int tlev;
    int avail, cost;
    int rel;
    long cash;

    if (!snxtitem(&ni, EF_PLANE, player->argp[2]))
        return RET_SYN;
    natp = getnatp(player->cnum);
    cash = natp->nat_money;
    tlev = (int)natp->nat_level[NAT_TLEV];
    n = 0;
    while (nxtitem(&ni, &plane)) {
        if (plane.pln_own == 0)
            continue;
        getsect(plane.pln_x, plane.pln_y, &sect);
        if (sect.sct_own != player->cnum)
            continue;
        if (sect.sct_type != SCT_AIRPT || sect.sct_effic < 60)
            continue;
        rel = getrel(getnatp(plane.pln_own), sect.sct_own);
        if (rel < FRIENDLY && sect.sct_own != plane.pln_own) {
            pr("You are not on friendly terms with the owner of plane %d!\n",
               plane.pln_uid);
            continue;
        }
        n++;
        pp = &plchr[(int)plane.pln_type];
        avail = (PLN_BLD_WORK(pp->pl_lcm, pp->pl_hcm) * UPGR_COST + 99) / 100;
        if (sect.sct_avail < avail) {
            pr("Not enough available work in %s to upgrade a %s\n",
               xyas(sect.sct_x, sect.sct_y, player->cnum), pp->pl_name);
            pr(" (%d available work required)\n", avail);
            continue;
        }
        if (plane.pln_effic < 60) {
            pr("%s is too damaged to upgrade!\n", prplane(&plane));
            continue;
        }
        if (plane.pln_tech >= tlev) {
            pr("%s tech: %d, yours is only %d\n",
               prplane(&plane), plane.pln_tech, tlev);
            continue;
        }
        cost = pp->pl_cost * UPGR_COST / 100;
        if (cost + player->dolcost > cash) {
            pr("You don't have enough money to upgrade %s!\n",
               prplane(&plane));
            continue;
        }
        if (plane.pln_flags & PLN_LAUNCHED) {
            pr("Plane %s is in orbit!\n", prplane(&plane));
            continue;
        }

        sect.sct_avail -= avail;
        plane.pln_effic -= UPGR_EFF;
        pln_set_tech(&plane, tlev);
        plane.pln_harden = 0;
        plane.pln_mission = 0;

        putplane(plane.pln_uid, &plane);
        putsect(&sect);
        player->dolcost += cost;
        pr("%s upgraded to tech %d, at a cost of %d\n",
           prplane(&plane), plane.pln_tech, cost);
        if (plane.pln_own != player->cnum)
            wu(0, plane.pln_own,
               "%s upgraded by %s to tech %d, at a cost of %d\n",
               prplane(&plane), cname(player->cnum), plane.pln_tech,
               cost);
    }
    if (n == 0) {
        pr("No planes.\n");
        return RET_SYN;
    }
    return RET_OK;
}

---