362 lines
9.3 KiB
C
362 lines
9.3 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2010, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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* This program 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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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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* unitsub.c: Common subroutines for multiple type of units
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*
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* Known contributors to this file:
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* Ron Koenderink, 2007
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* Markus Armbruster, 2009
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*/
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#include <config.h>
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#include "empobj.h"
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#include "file.h"
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#include "player.h"
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#include "optlist.h"
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#include "prototypes.h"
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#include "unit.h"
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void
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unit_list(struct emp_qelem *unit_list)
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{
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struct emp_qelem *qp;
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struct emp_qelem *next;
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struct ulist *ulp;
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int type, npln, nch, nxl;
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struct empobj *unit;
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struct lndstr *lnd;
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struct shpstr *shp;
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if (CANT_HAPPEN(QEMPTY(unit_list)))
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return;
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qp = unit_list->q_back;
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ulp = (struct ulist *)qp;
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type = ulp->unit.gen.ef_type;
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if (CANT_HAPPEN(type != EF_LAND && type != EF_SHIP))
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return;
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if (type == EF_LAND)
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pr("lnd# land type x,y a eff sh gun xl mu tech retr\n");
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else
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pr("shp# ship type x,y fl eff mil sh gun pn he xl ln mob tech\n");
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for (; qp != unit_list; qp = next) {
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next = qp->q_back;
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ulp = (struct ulist *)qp;
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lnd = &ulp->unit.land;
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shp = &ulp->unit.ship;
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unit = &ulp->unit.gen;
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if (CANT_HAPPEN(type != unit->ef_type))
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continue;
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pr("%4d ", unit->uid);
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pr("%-16.16s ", empobj_chr_name(unit));
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prxy("%4d,%-4d ", unit->x, unit->y, unit->own);
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pr("%1.1s", &unit->group);
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pr("%4d%%", unit->effic);
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if (type == EF_LAND) {
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pr("%4d", lnd->lnd_item[I_SHELL]);
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pr("%4d", lnd->lnd_item[I_GUN]);
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pr("%3d", lnd_nxlight(lnd));
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} else {
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pr("%4d", shp->shp_item[I_MILIT]);
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pr("%4d", shp->shp_item[I_SHELL]);
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pr("%4d", shp->shp_item[I_GUN]);
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npln = shp_nplane(shp, &nch, &nxl, NULL);
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pr("%3d%3d%3d", npln - nch - nxl, nch, nxl);
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pr("%3d", shp_nland(shp));
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}
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pr("%4d", unit->mobil);
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pr("%4d", unit->tech);
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if (type == EF_LAND) {
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pr("%4d%%", lnd->lnd_retreat);
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}
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pr("\n");
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}
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}
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void
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unit_put(struct emp_qelem *list, natid actor)
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{
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struct emp_qelem *qp;
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struct emp_qelem *newqp;
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struct ulist *ulp;
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struct empobj *unit;
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qp = list->q_back;
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while (qp != list) {
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ulp = (struct ulist *)qp;
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unit = &ulp->unit.gen;
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if (CANT_HAPPEN(unit->ef_type != EF_LAND
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&& unit->ef_type != EF_SHIP))
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continue;
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if (actor) {
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mpr(actor, "%s stopped at %s\n", obj_nameof(unit),
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xyas(unit->x, unit->y, unit->own));
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if (unit->ef_type == EF_LAND) {
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if (ulp->mobil < -127)
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ulp->mobil = -127;
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unit->mobil = ulp->mobil;
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}
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}
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if (unit->ef_type == EF_SHIP)
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unit->mobil = (int)ulp->mobil;
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put_empobj(unit->ef_type, unit->uid, unit);
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newqp = qp->q_back;
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emp_remque(qp);
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free(qp);
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qp = newqp;
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}
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}
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char *
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unit_path(int together, struct empobj *unit, char *buf)
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{
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coord destx;
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coord desty;
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struct sctstr d_sect, sect;
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char *cp;
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double dummy;
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int mtype;
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if (CANT_HAPPEN(unit->ef_type != EF_LAND && unit->ef_type != EF_SHIP))
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return NULL;
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if (!sarg_xy(buf, &destx, &desty))
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return NULL;
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if (!together) {
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pr("Cannot go to a destination sector if not all starting in the same sector\n");
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return NULL;
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}
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if (!getsect(destx, desty, &d_sect)) {
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pr("%d,%d is not a sector\n", destx, desty);
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return NULL;
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}
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if (unit->ef_type == EF_SHIP) {
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cp = BestShipPath(buf, unit->x, unit->y,
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d_sect.sct_x, d_sect.sct_y, player->cnum);
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if (!cp || unit->mobil <= 0) {
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pr("Can't get to '%s' right now.\n",
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xyas(d_sect.sct_x, d_sect.sct_y, player->cnum));
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return NULL;
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}
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} else {
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getsect(unit->x, unit->y, §);
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mtype = lnd_mobtype((struct lndstr *)unit);
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cp = BestLandPath(buf, §, &d_sect, &dummy, mtype);
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if (!cp) {
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pr("No owned %s from %s to %s!\n",
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mtype == MOB_RAIL ? "railway" : "path",
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xyas(unit->x, unit->y, player->cnum),
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xyas(d_sect.sct_x, d_sect.sct_y, player->cnum));
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return NULL;
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}
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pr("Using path '%s'\n", cp);
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}
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return cp;
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}
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void
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unit_view(struct emp_qelem *list)
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{
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struct sctstr sect;
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struct emp_qelem *qp;
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struct emp_qelem *next;
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struct ulist *ulp;
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for (qp = list->q_back; qp != list; qp = next) {
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next = qp->q_back;
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ulp = (struct ulist *)qp;
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if (CANT_HAPPEN(!(ef_flags(ulp->unit.gen.ef_type) & EFF_XY)))
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continue;
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getsect(ulp->unit.gen.x, ulp->unit.gen.y, §);
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if (ulp->unit.gen.ef_type == EF_SHIP) {
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if (((struct mchrstr *)ulp->chrp)->m_flags & M_FOOD)
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pr("[fert:%d] ", sect.sct_fertil);
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if (((struct mchrstr *)ulp->chrp)->m_flags & M_OIL)
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pr("[oil:%d] ", sect.sct_oil);
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}
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pr("%s @ %s %d%% %s\n", obj_nameof(&ulp->unit.gen),
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xyas(ulp->unit.gen.x, ulp->unit.gen.y, player->cnum),
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sect.sct_effic, dchr[sect.sct_type].d_name);
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}
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}
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/*
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* Update cargo of CARRIER for movement or destruction.
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* If the carrier is destroyed, destroy its cargo (planes, land units,
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* nukes).
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* Else update their location to the carrier's. Any op sectors equal
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* to location get updated, too.
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*/
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void
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unit_update_cargo(struct empobj *carrier)
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{
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int cargo_type;
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struct nstr_item ni;
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union empobj_storage obj;
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for (cargo_type = EF_PLANE; cargo_type <= EF_NUKE; cargo_type++) {
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snxtitem_cargo(&ni, cargo_type, carrier->ef_type, carrier->uid);
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while (nxtitem(&ni, &obj)) {
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if (!carrier->own) {
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mpr(obj.gen.own, "%s lost!\n", obj_nameof(&obj.gen));
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obj.gen.effic = 0;
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} else {
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/* mission op-area centered on the obj travels with it */
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if (obj.gen.opx == obj.gen.x && obj.gen.opy == obj.gen.y) {
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obj.gen.opx = carrier->x;
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obj.gen.opy = carrier->y;
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}
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obj.gen.x = carrier->x;
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obj.gen.y = carrier->y;
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}
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put_empobj(cargo_type, obj.gen.uid, &obj);
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}
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}
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}
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/*
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* Drop cargo of UNIT.
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* Give it to NEWOWN, unless it's zero.
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*/
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void
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unit_drop_cargo(struct empobj *unit, natid newown)
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{
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int type;
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struct nstr_item ni;
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union empobj_storage cargo;
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for (type = EF_PLANE; type <= EF_NUKE; type++) {
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snxtitem_cargo(&ni, type, unit->ef_type, unit->uid);
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while (nxtitem(&ni, &cargo)) {
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switch (type) {
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case EF_PLANE:
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cargo.plane.pln_ship = cargo.plane.pln_land = -1;
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break;
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case EF_LAND:
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cargo.land.lnd_ship = cargo.land.lnd_land = -1;
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break;
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case EF_NUKE:
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cargo.nuke.nuk_plane = -1;
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break;
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}
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mpr(cargo.gen.own, "%s transferred off %s %d to %s\n",
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obj_nameof(&cargo.gen),
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ef_nameof(unit->ef_type), unit->uid,
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xyas(cargo.gen.x, cargo.gen.y, cargo.gen.own));
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if (newown)
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unit_give_away(&cargo.gen, newown, cargo.gen.own);
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put_empobj(type, cargo.gen.uid, &cargo.gen);
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}
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}
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}
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/*
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* Give UNIT and its cargo to RECIPIENT.
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* No action if RECIPIENT already owns UNIT.
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* If GIVER is non-zero, inform RECIPIENT and GIVER of the transaction.
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* Clears mission and group on the units given away.
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*/
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void
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unit_give_away(struct empobj *unit, natid recipient, natid giver)
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{
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int type;
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struct nstr_item ni;
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union empobj_storage cargo;
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if (unit->own == recipient)
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return;
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if (giver) {
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mpr(unit->own, "%s given to %s\n",
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obj_nameof(unit), cname(recipient));
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mpr(recipient, "%s given to you by %s\n",
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obj_nameof(unit), cname(giver));
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}
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unit->own = recipient;
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unit_wipe_orders(unit);
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put_empobj(unit->ef_type, unit->uid, unit);
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for (type = EF_PLANE; type <= EF_NUKE; type++) {
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snxtitem_cargo(&ni, type, unit->ef_type, unit->uid);
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while (nxtitem(&ni, &cargo))
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unit_give_away(&cargo.gen, recipient, giver);
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}
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}
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/*
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* Wipe orders and such from UNIT.
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*/
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void
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unit_wipe_orders(struct empobj *unit)
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{
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struct shpstr *sp;
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struct plnstr *pp;
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struct lndstr *lp;
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int i;
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unit->group = 0;
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unit->opx = unit->opy = 0;
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unit->mission = 0;
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unit->radius = 0;
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switch (unit->ef_type) {
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case EF_SHIP:
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sp = (struct shpstr *)unit;
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sp->shp_destx[0] = sp->shp_desty[0] = 0;
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sp->shp_destx[1] = sp->shp_desty[1] = 0;
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for (i = 0; i < TMAX; ++i) {
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sp->shp_tstart[i] = I_NONE;
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sp->shp_tend[i] = I_NONE;
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sp->shp_lstart[i] = 0;
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sp->shp_lend[i] = 0;
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}
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sp->shp_autonav = 0;
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sp->shp_mobquota = 0;
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sp->shp_path[0] = 0;
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sp->shp_follow = sp->shp_uid;
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sp->shp_rflags = 0;
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sp->shp_rpath[0] = 0;
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break;
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case EF_PLANE:
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pp = (struct plnstr *)unit;
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pp->pln_range = pln_range_max(pp);
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break;
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case EF_LAND:
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lp = (struct lndstr *)unit;
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lp->lnd_retreat = morale_base;
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lp->lnd_rflags = 0;
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lp->lnd_rpath[0] = 0;
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break;
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case EF_NUKE:
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break;
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default:
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CANT_REACH();
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}
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}
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