Markus Armbruster
7e2008e7f4
Why upgrade? I'm not a lawyer, but here's my take on the differences to version 2: * Software patents: better protection against abuse of patents to prevent users from exercising the rights under the GPL. I doubt we'll get hit with a patent suit, but it's a good move just on general principles. * License compatibility: compatible with more free licenses, i.e. can "steal" more free software for use in Empire. I don't expect to steal much, but it's nice to have the option. * Definition of "source code": modernization of some details for today's networked world, to make it easier to distribute the software. Not really relevant to us now, as we normally distribute full source code. * Tivoization: this is about putting GPL-licensed software in hardware, then make the hardware refuse to run modified software. "Neat" trick to effectively deny its users their rights under the GPL. Abuse was "pioneered" by TiVo (popular digital video recorders). GPLv3 forbids it. Unlikely to become a problem for us. * Internationalization: more careful wording, to harden the license outside the US. The lawyers tell us it better be done that way. * License violations: friendlier way to deal with license violations. This has come out of past experience enforcing the GPL. * Additional permissions: Probably not relevant to us. Also include myself in the list of principal authors.
256 lines
6.2 KiB
C
256 lines
6.2 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2011, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure, Markus Armbruster
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*
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* Empire is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* ---
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*
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* See files README, COPYING and CREDITS in the root of the source
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* tree for related information and legal notices. It is expected
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* that future projects/authors will amend these files as needed.
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*
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* ---
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*
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* tran.c: Transport nuclear devices and planes
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*
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* Known contributors to this file:
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* Steve McClure, 2000
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* Markus Armbruster, 2006-2009
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*/
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#include <config.h>
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#include "commands.h"
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#include "land.h"
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#include "nuke.h"
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#include "plane.h"
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#include "ship.h"
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static int tran_pmap(coord curx, coord cury, char *arg);
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static int tran_nmap(coord curx, coord cury, char *arg);
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static int tran_nuke(void);
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static int tran_plane(void);
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int
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tran(void)
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{
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char *what;
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char buf[1024];
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what = getstarg(player->argp[1], "transport what (nuke or plane): ",
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buf);
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if (!what)
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return RET_SYN;
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if (*what == 'n')
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return tran_nuke();
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else if (*what == 'p')
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return tran_plane();
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return RET_SYN;
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}
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static int
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tran_nuke(void)
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{
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coord srcx, srcy;
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coord dstx, dsty;
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int mcost;
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int weight, count;
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int type, dam;
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struct nstr_item nstr;
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struct nukstr nuke;
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struct sctstr sect;
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struct sctstr endsect;
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weight = 0;
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count = 0;
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if (!snxtitem(&nstr, EF_NUKE, player->argp[2], NULL))
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return RET_SYN;
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while (nxtitem(&nstr, &nuke)) {
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if (!player->owner)
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continue;
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type = nuke.nuk_type;
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if (nuke.nuk_plane >= 0) {
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pr("%s is armed and can't be transported\n", prnuke(&nuke));
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return RET_FAIL;
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}
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if (count == 0) {
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srcx = nuke.nuk_x;
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srcy = nuke.nuk_y;
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} else {
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if (nuke.nuk_x != srcx || nuke.nuk_y != srcy) {
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pr("All nukes must be in the same sector.\n");
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return RET_FAIL;
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}
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}
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weight += nchr[type].n_weight;
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++count;
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}
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if (count == 0) {
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pr("No nukes\n");
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return RET_FAIL;
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}
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if (!getsect(srcx, srcy, §) || !player->owner) {
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pr("You don't own %s\n", xyas(srcx, srcy, player->cnum));
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return RET_FAIL;
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}
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if (!military_control(§)) {
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pr("Military control required to move nukes.\n");
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return RET_FAIL;
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}
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dam = 0;
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mcost = move_ground(§, &endsect, weight,
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player->argp[3], tran_nmap, 0, &dam);
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if (mcost < 0)
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return 0;
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dstx = endsect.sct_x;
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dsty = endsect.sct_y;
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snxtitem_rewind(&nstr);
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while (nxtitem(&nstr, &nuke)) {
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if (!player->owner)
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continue;
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/* TODO apply dam */
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nuke.nuk_x = dstx;
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nuke.nuk_y = dsty;
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nuke.nuk_mission = 0;
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putnuke(nuke.nuk_uid, &nuke);
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}
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if (mcost > 0)
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pr("Total movement cost = %d\n", mcost);
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else
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pr("No mobility used\n");
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getsect(srcx, srcy, §);
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if (sect.sct_mobil >= mcost)
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sect.sct_mobil -= mcost;
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else
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sect.sct_mobil = 0;
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putsect(§);
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return RET_OK;
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}
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static int
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tran_plane(void)
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{
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coord srcx, srcy;
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coord dstx, dsty;
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int mcost;
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int weight, count;
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int type, dam;
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struct nstr_item nstr;
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struct plnstr plane;
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struct sctstr sect;
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struct sctstr endsect;
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weight = 0;
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count = 0;
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if (!snxtitem(&nstr, EF_PLANE, player->argp[2], NULL))
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return RET_SYN;
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/*
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* First do some sanity checks: make sure that they are all in the,
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* same sector, not on ships, owned, etc.
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* No one could seriously want to move planes in parallel from
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* several sectors!
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*/
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while (nxtitem(&nstr, &plane)) {
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if (!player->owner)
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continue;
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type = plane.pln_type;
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if (plane.pln_ship >= 0) {
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pr("%s is at sea and can't be transported\n", prplane(&plane));
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return RET_FAIL;
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} else if (plane.pln_harden != 0) {
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pr("%s has been hardened and can't be transported\n",
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prplane(&plane));
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return RET_FAIL;
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} else if (pln_is_in_orbit(&plane)) {
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pr("%s is in space and can't be transported\n",
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prplane(&plane));
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return RET_FAIL;
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}
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if (count == 0) {
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srcx = plane.pln_x;
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srcy = plane.pln_y;
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} else {
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if (plane.pln_x != srcx || plane.pln_y != srcy) {
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pr("All planes must be in the same sector.\n");
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return RET_FAIL;
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}
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}
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weight += plchr[type].pl_lcm + (plchr[type].pl_hcm * 2);
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++count;
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}
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if (count == 0) {
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pr("No planes\n");
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return RET_FAIL;
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}
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if (!getsect(srcx, srcy, §) || !player->owner) {
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pr("You don't own %s\n", xyas(srcx, srcy, player->cnum));
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return RET_FAIL;
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}
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if (!military_control(§)) {
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pr("Military control required to move planes.\n");
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return RET_FAIL;
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}
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dam = 1;
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mcost = move_ground(§, &endsect, weight,
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player->argp[3], tran_pmap, 0, &dam);
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dam /= count;
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if (mcost < 0)
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return 0;
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dstx = endsect.sct_x;
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dsty = endsect.sct_y;
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snxtitem_rewind(&nstr);
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while (nxtitem(&nstr, &plane)) {
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if (!player->owner)
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continue;
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if (dam)
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planedamage(&plane, dam);
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plane.pln_x = dstx;
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plane.pln_y = dsty;
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plane.pln_mission = 0;
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putplane(plane.pln_uid, &plane);
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}
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if (mcost > 0)
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pr("Total movement cost = %d\n", mcost);
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else
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pr("No mobility used\n");
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getsect(srcx, srcy, §);
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if (sect.sct_mobil >= mcost)
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sect.sct_mobil -= mcost;
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else
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sect.sct_mobil = 0;
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putsect(§);
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return RET_OK;
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}
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/*
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* Pretty tacky, but it works.
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* If more commands start doing this, then
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* rewrite map to do the right thing.
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*/
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/*ARGSUSED*/
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static int
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tran_pmap(coord curx, coord cury, char *arg)
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{
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return display_region_map(0, EF_PLANE, curx, cury, arg);
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}
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static int
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tran_nmap(coord curx, coord cury, char *arg)
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{
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return display_region_map(0, EF_NUKE, curx, cury, arg);
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}
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