Markus Armbruster
7f3f9c6726
Commita269cdd7(v4.3.23) removed the nuclear damage. But it left the nuke on the missile, which made pln_damage() oops and return zero damage. Fix by destroying the nuke separately. (cherry picked from commit876f3424b0)
1087 lines
26 KiB
C
1087 lines
26 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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* plnsub.c: Plane subroutine stuff
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*
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* Known contributors to this file:
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* Dave Pare, 1986
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* Ken Stevens, 1995
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* Steve McClure, 1998-2000
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* Markus Armbruster, 2004-2009
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*/
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#include <config.h>
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#include "file.h"
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#include "item.h"
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#include "land.h"
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#include "lost.h"
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#include "map.h"
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#include "misc.h"
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#include "nat.h"
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#include "nsc.h"
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#include "nuke.h"
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#include "optlist.h"
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#include "path.h"
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#include "plane.h"
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#include "player.h"
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#include "prototypes.h"
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#include "sect.h"
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#include "ship.h"
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#include "xy.h"
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static int fit_plane_on_ship(struct plnstr *, struct shpstr *);
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/*
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* Get planes and escorts argument.
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* Read planes into *NI_BOMB, and (optional) escorts into *NI_ESC.
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* If INPUT_BOMB is not empty, use it, else prompt for more input.
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* Same for INPUT_ESC.
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* If we got a plane argument, initialize *NI_BOMB and *NI_ESC, and
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* return 0.
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* Else return -1 (*NI_BOMB and *NI_ESC may be modified).
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*/
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int
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get_planes(struct nstr_item *ni_bomb, struct nstr_item *ni_esc,
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char *input_bomb, char *input_esc)
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{
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if (!snxtitem(ni_bomb, EF_PLANE, input_bomb, NULL))
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return -1;
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if (!snxtitem(ni_esc, EF_PLANE, input_esc, "escort(s)? ")) {
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if (player->aborted)
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return -1;
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pr("No escorts...\n");
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}
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return 0;
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}
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/*
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* Get assembly point argument.
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* If INPUT is not empty, use it, else prompt for more input using PROMPT.
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* If this yields a valid assembly point, read it into *AP_SECT and
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* return AP_SECT.
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* Else complain and return NULL.
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* *AP_SECT and BUF[1024] may be modified in either case.
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*/
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struct sctstr *
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get_assembly_point(char *input, struct sctstr *ap_sect, char *buf)
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{
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char *p;
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coord x, y;
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struct nstr_item ni;
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struct shpstr ship;
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p = getstarg(input, "assembly point? ", buf);
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if (!p || *p == 0)
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return NULL;
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if (!sarg_xy(p, &x, &y) || !getsect(x, y, ap_sect))
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return NULL;
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/* over own or allied sector is fine */
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if (ap_sect->sct_own == player->cnum
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|| getrel(getnatp(ap_sect->sct_own), player->cnum) == ALLIED)
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return ap_sect;
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/* over own or allied ship is fine */
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snxtitem_xy(&ni, EF_SHIP, x, y);
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while (nxtitem(&ni, &ship)) {
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if (ship.shp_effic < SHIP_MINEFF || ship.shp_own == 0)
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continue;
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if (ship.shp_own == player->cnum
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|| getrel(getnatp(ship.shp_own), player->cnum) == ALLIED)
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return ap_sect;
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}
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pr("Assembly point not owned by you or an ally!\n");
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return NULL;
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}
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int
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pln_onewaymission(struct sctstr *target, int *shipno, int *flagp)
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{
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int nships;
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int cno;
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int flags, fl;
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struct shpstr ship;
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char buf[1024];
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char *p;
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flags = *flagp;
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/* offer carriers */
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nships = carriersatxy(target->sct_x, target->sct_y, player->cnum);
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if (nships) {
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for (;;) {
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p = getstring("Carrier #? ", buf);
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if (!p)
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return -1;
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if (!*p)
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break;
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cno = atoi(p);
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if (cno < 0
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|| !getship(cno, &ship)
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|| (!player->owner
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&& (getrel(getnatp(ship.shp_own), player->cnum)
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!= ALLIED))) {
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pr("Not yours\n");
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continue;
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}
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if (ship.shp_x != target->sct_x || ship.shp_y != target->sct_y) {
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pr("Ship #%d not in %s\n", cno,
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xyas(target->sct_x, target->sct_y, player->cnum));
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continue;
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}
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fl = carrier_planes(&ship, 0);
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if (fl == 0) {
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pr("Can't land on %s.\n", prship(&ship));
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continue;
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}
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/* clear to land on ship#CNO */
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pr("landing on carrier %d\n", cno);
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flags |= fl;
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*shipno = cno;
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*flagp = flags;
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return 0;
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}
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}
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/* try to land at sector */
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if (target->sct_own != player->cnum
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&& getrel(getnatp(target->sct_own), player->cnum) != ALLIED) {
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pr("Nowhere to land at sector %s!\n",
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xyas(target->sct_x, target->sct_y, player->cnum));
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return -1;
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}
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if (target->sct_type == SCT_MOUNT) {
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pr("Nowhere to land at sector %s!\n",
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xyas(target->sct_x, target->sct_y, player->cnum));
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return -1;
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}
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if (target->sct_type != SCT_AIRPT || target->sct_effic < 60)
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flags |= P_V;
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/* clear to land at sector */
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*shipno = -1;
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*flagp = flags;
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return 0;
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}
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int
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pln_oneway_to_carrier_ok(struct emp_qelem *bomb_list,
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struct emp_qelem *esc_list, int cno)
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{
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struct emp_qelem *list, *qp;
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struct plist *plp;
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struct shpstr ship;
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if (cno < 0 || !getship(cno, &ship))
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return 0;
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/* for both lists */
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for (list = bomb_list;
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list;
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list = list == bomb_list ? esc_list : NULL) {
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for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
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plp = (struct plist *)qp;
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if (plp->plane.pln_ship == ship.shp_uid)
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continue;
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if (!fit_plane_on_ship(&plp->plane, &ship))
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return 0;
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}
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}
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return 1;
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}
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void
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pln_newlanding(struct emp_qelem *list, coord tx, coord ty, int cno)
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{
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struct emp_qelem *qp;
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struct plist *plp;
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struct shpstr ship;
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struct sctstr sect;
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if (cno >= 0)
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getship(cno, &ship);
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for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
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plp = (struct plist *)qp;
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if (cno >= 0) {
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if (!could_be_on_ship(&plp->plane, &ship, 0, 0, 0, 0))
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pr("\t%s cannot land on ship #%d! %s aborts!\n",
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prplane(&plp->plane), cno, prplane(&plp->plane));
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else if (!put_plane_on_ship(&plp->plane, &ship))
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pr("\tNo room on ship #%d! %s aborts!\n",
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cno, prplane(&plp->plane));
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else {
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if (plp->plane.pln_own != ship.shp_own) {
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wu(0, ship.shp_own, "%s %s lands on your %s\n",
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cname(player->cnum), prplane(&plp->plane),
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prship(&ship));
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}
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}
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} else {
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plp->plane.pln_x = tx;
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plp->plane.pln_y = ty;
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getsect(tx, ty, §);
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if (plp->plane.pln_own != sect.sct_own) {
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wu(0, sect.sct_own,
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"%s %s lands at your sector %s\n",
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cname(player->cnum),
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prplane(&plp->plane), xyas(tx, ty, sect.sct_own));
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}
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plp->plane.pln_ship = cno;
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}
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}
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}
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void
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pln_dropoff(struct emp_qelem *list, struct ichrstr *ip, coord tx, coord ty,
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int cno)
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{
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struct emp_qelem *qp;
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struct plist *plp;
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int amt;
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struct sctstr sect;
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struct shpstr ship;
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int there;
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int max;
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if (!ip)
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return;
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amt = 0;
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for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
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plp = (struct plist *)qp;
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amt += plp->load;
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}
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if (cno < 0) {
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getsect(tx, ty, §);
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if (!sect.sct_own) {
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if (sect.sct_type == SCT_WATER)
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pr("Your %s sink like a rock!\n", ip->i_name);
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else
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pr("Your %s vanish without a trace.\n", ip->i_name);
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return;
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}
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if (sect.sct_own != player->cnum
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&& getrel(getnatp(sect.sct_own), player->cnum) != ALLIED) {
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pr("You don't own %s! Cargo jettisoned...\n",
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xyas(tx, ty, player->cnum));
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return;
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}
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if (ip->i_uid == I_CIVIL && sect.sct_own != sect.sct_oldown) {
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pr("%s is occupied. Your civilians suffer from identity crisis and die.\n",
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xyas(tx, ty, player->cnum));
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return;
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}
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there = sect.sct_item[ip->i_uid];
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max = ITEM_MAX;
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} else {
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getship(cno, &ship);
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there = ship.shp_item[ip->i_uid];
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max = mchr[ship.shp_type].m_item[ip->i_uid];
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}
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there += amt;
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if (there > max) {
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pr("%d excess %s discarded\n", max - there, ip->i_name);
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amt = max - there;
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there = max;
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}
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pr("%d %s landed safely", amt, ip->i_name);
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if (cno < 0) {
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sect.sct_item[ip->i_uid] = there;
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if (sect.sct_own != player->cnum)
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wu(0, sect.sct_own, "%s planes drop %d %s in %s\n",
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cname(player->cnum), amt, ip->i_name,
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xyas(tx, ty, sect.sct_own));
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pr(" at %s\n", xyas(tx, ty, player->cnum));
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putsect(§);
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} else {
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ship.shp_item[ip->i_uid] = there;
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if (ship.shp_own != player->cnum)
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wu(0, ship.shp_own, "%s planes land %d %s on carrier %d\n",
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cname(player->cnum), amt, ip->i_name, ship.shp_uid);
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pr(" on carrier #%d\n", ship.shp_uid);
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putship(ship.shp_uid, &ship);
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}
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}
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void
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pln_mine(struct emp_qelem *list, coord tx, coord ty)
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{
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struct emp_qelem *qp;
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struct plist *plp;
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int amt;
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struct sctstr sect;
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amt = 0;
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for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
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plp = (struct plist *)qp;
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amt += plp->load;
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}
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if (amt > 0) {
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getsect(tx, ty, §);
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if (sect.sct_type != SCT_WATER) {
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pr("Your seamines have no effect here.\n");
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return;
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}
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sect.sct_mines = MIN(sect.sct_mines + amt, MINES_MAX);
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pr("%d mines laid in %s.\n", amt, xyas(tx, ty, player->cnum));
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if (map_set(player->cnum, tx, ty, 'X', 0))
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writemap(player->cnum);
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putsect(§);
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}
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}
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/*
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* Has PP's type capabilities satisfying WANTFLAGS and NOWANTFLAGS?
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* A plane type is capable unless
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* - it lacks all of the P_B, P_T in WANTFLAGS, or
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* - it lacks all of the P_F, P_ESC in WANTFLAGS, or
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* - it lacks all of the P_E, P_L, P_K in WANTFLAGS, or
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* - it lacks any of the other capabilities in WANTFLAGS, or
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* - it has any of the capabilities in NOWANTFLAGS.
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*/
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int
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pln_capable(struct plnstr *pp, int wantflags, int nowantflags)
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{
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int flags = plchr[(int)pp->pln_type].pl_flags;
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if (wantflags & (P_B | P_T)) {
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if ((flags & wantflags & (P_B | P_T)) == 0)
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return 0;
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wantflags &= ~(P_B | P_T);
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}
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if (wantflags & (P_F | P_ESC)) {
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if ((flags & wantflags & (P_F | P_ESC)) == 0)
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return 0;
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wantflags &= ~(P_F | P_ESC);
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}
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if (wantflags & (P_E | P_L | P_K)) {
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if ((flags & wantflags & (P_E | P_L | P_K)) == 0)
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return 0;
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wantflags &= ~(P_E | P_L | P_K);
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}
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if ((flags & wantflags) != wantflags)
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return 0;
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if (flags & nowantflags)
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return 0;
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return 1;
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}
|
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|
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/*
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* Return union of capabilities of planes in LIST.
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*/
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int
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pln_caps(struct emp_qelem *list)
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{
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struct emp_qelem *qp;
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struct plist *plp;
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int fl;
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fl = 0;
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for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
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plp = (struct plist *)qp;
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fl |= plp->pcp->pl_flags;
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}
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return fl;
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}
|
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|
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/*
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* Find plane types that can operate from carrier SP.
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* If MSL find missile types, else non-missile types.
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* Return a combination of P_L, P_K, P_E.
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* It's zero if SP can't support air operations due to its type or
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* state (low efficiency).
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*/
|
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int
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carrier_planes(struct shpstr *sp, int msl)
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{
|
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struct mchrstr *mcp = mchr + sp->shp_type;
|
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int res;
|
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if (sp->shp_effic < SHP_AIROPS_EFF)
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return 0;
|
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res = 0;
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if (mcp->m_flags & M_FLY)
|
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res |= P_L;
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if ((mcp->m_flags & M_MSL) && msl)
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res |= P_L;
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if (mcp->m_nchoppers && !msl)
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res |= P_K;
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if (mcp->m_nxlight)
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res |= P_E;
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return res;
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}
|
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|
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int
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pln_airbase_ok(struct plnstr *pp, int oneway, int noisy)
|
|
{
|
|
struct shpstr ship;
|
|
struct lndstr land;
|
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struct sctstr sect;
|
|
struct plchrstr *pcp = plchr + pp->pln_type;
|
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|
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if (CANT_HAPPEN(noisy && pp->pln_own != player->cnum))
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noisy = 0;
|
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|
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if (pp->pln_ship >= 0) {
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/* ship: needs to be own or allied, efficient */
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if (!getship(pp->pln_ship, &ship)) {
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CANT_REACH();
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return 0;
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}
|
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if (ship.shp_own != pp->pln_own
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&& getrel(getnatp(ship.shp_own), pp->pln_own) != ALLIED) {
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if (noisy)
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pr("(note) An ally does not own the ship %s is on\n",
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prplane(pp));
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return 0;
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}
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if (!(carrier_planes(&ship, pcp->pl_flags & P_M) & pcp->pl_flags))
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return 0;
|
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|
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} else if (pp->pln_land >= 0) {
|
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/* land: needs to be own or allied, efficient, not embarked */
|
|
if (!getland(pp->pln_land, &land)) {
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CANT_REACH();
|
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return 0;
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}
|
|
if (land.lnd_own != pp->pln_own
|
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&& getrel(getnatp(land.lnd_own), pp->pln_own) != ALLIED) {
|
|
if (noisy)
|
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pr("(note) An ally does not own the unit %s is on\n",
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prplane(pp));
|
|
return 0;
|
|
}
|
|
if (land.lnd_effic < LND_AIROPS_EFF || !(pcp->pl_flags & P_E))
|
|
return 0;
|
|
if (land.lnd_ship >= 0 || land.lnd_land >= 0)
|
|
return 0;
|
|
|
|
} else {
|
|
/* sector: needs to be own or allied, efficient airfield */
|
|
if (!getsect(pp->pln_x, pp->pln_y, §)) {
|
|
CANT_REACH();
|
|
return 0;
|
|
}
|
|
|
|
if (sect.sct_own != pp->pln_own
|
|
&& getrel(getnatp(sect.sct_own), pp->pln_own) != ALLIED) {
|
|
if (noisy)
|
|
pr("(note) An ally does not own the sector %s is in\n",
|
|
prplane(pp));
|
|
return 0;
|
|
}
|
|
/* need airfield unless VTOL */
|
|
if ((pcp->pl_flags & P_V) == 0) {
|
|
if (sect.sct_type != SCT_AIRPT) {
|
|
if (noisy)
|
|
pr("%s not at airport\n", prplane(pp));
|
|
return 0;
|
|
}
|
|
if (sect.sct_effic < 40) {
|
|
if (noisy)
|
|
pr("%s is not 40%% efficient, %s can't take off from there.\n",
|
|
xyas(sect.sct_x, sect.sct_y, pp->pln_own),
|
|
prplane(pp));
|
|
return 0;
|
|
}
|
|
if (!oneway && sect.sct_effic < 60) {
|
|
if (noisy)
|
|
pr("%s is not 60%% efficient, %s can't land there.\n",
|
|
xyas(sect.sct_x, sect.sct_y, pp->pln_own),
|
|
prplane(pp));
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
pln_sel(struct nstr_item *ni, struct emp_qelem *list, struct sctstr *ap,
|
|
int ap_to_target, int rangemult, int wantflags, int nowantflags)
|
|
{
|
|
struct plnstr plane;
|
|
int range;
|
|
struct plchrstr *pcp;
|
|
struct plist *plp;
|
|
|
|
emp_initque(list);
|
|
while (nxtitem(ni, &plane)) {
|
|
if (!player->owner)
|
|
continue;
|
|
if (plane.pln_mobil <= 0)
|
|
continue;
|
|
if (plane.pln_effic < 40) {
|
|
pr("%s not efficient enough (must be 40%%)\n",
|
|
prplane(&plane));
|
|
continue;
|
|
}
|
|
if (!pln_capable(&plane, wantflags, nowantflags))
|
|
continue;
|
|
if (opt_MARKET) {
|
|
if (ontradingblock(EF_PLANE, &plane)) {
|
|
pr("plane #%d inelligible - it's for sale.\n",
|
|
plane.pln_uid);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
range = mapdist(plane.pln_x, plane.pln_y, ap->sct_x, ap->sct_y);
|
|
if (range > 4) {
|
|
pr("%s too far from assembly point\n", prplane(&plane));
|
|
continue;
|
|
}
|
|
range += ap_to_target;
|
|
range *= rangemult;
|
|
pcp = &plchr[(int)plane.pln_type];
|
|
if (plane.pln_range < range) {
|
|
pr("%s out of range (%d:%d)\n",
|
|
prplane(&plane), plane.pln_range, range);
|
|
continue;
|
|
}
|
|
if (!pln_airbase_ok(&plane, rangemult != 2, 1))
|
|
continue;
|
|
pr("%s standing by\n", prplane(&plane));
|
|
plane.pln_mission = 0;
|
|
putplane(plane.pln_uid, &plane);
|
|
plp = malloc(sizeof(struct plist));
|
|
plp->load = 0;
|
|
plp->pcp = pcp;
|
|
plp->plane = plane;
|
|
emp_insque(&plp->queue, list);
|
|
}
|
|
}
|
|
|
|
void
|
|
pln_arm(struct emp_qelem *list, int dist, char mission, struct ichrstr *ip)
|
|
{
|
|
struct emp_qelem *qp;
|
|
struct emp_qelem *next;
|
|
struct plist *plp;
|
|
struct plnstr *pp;
|
|
|
|
for (qp = list->q_forw; qp != list; qp = next) {
|
|
next = qp->q_forw;
|
|
plp = (struct plist *)qp;
|
|
pp = &plp->plane;
|
|
getplane(pp->pln_uid, pp);
|
|
if ((pp->pln_flags & PLN_LAUNCHED)
|
|
|| pln_equip(plp, ip, mission) < 0) {
|
|
emp_remque(qp);
|
|
free(qp);
|
|
continue;
|
|
}
|
|
pp->pln_flags |= PLN_LAUNCHED;
|
|
pp->pln_mobil -= pln_mobcost(dist, pp, mission);
|
|
putplane(pp->pln_uid, pp);
|
|
pr("%s equipped\n", prplane(pp));
|
|
}
|
|
}
|
|
|
|
int
|
|
pln_equip(struct plist *plp, struct ichrstr *ip, char mission)
|
|
{
|
|
struct plchrstr *pcp;
|
|
struct plnstr *pp;
|
|
int load, needed;
|
|
struct lndstr land;
|
|
struct shpstr ship;
|
|
struct sctstr sect;
|
|
i_type itype;
|
|
short *item;
|
|
int own;
|
|
int abandon_needed;
|
|
|
|
pp = &plp->plane;
|
|
pcp = plp->pcp;
|
|
if (pp->pln_ship >= 0) {
|
|
getship(pp->pln_ship, &ship);
|
|
item = ship.shp_item;
|
|
own = ship.shp_own;
|
|
} else if (pp->pln_land >= 0) {
|
|
getland(pp->pln_land, &land);
|
|
item = land.lnd_item;
|
|
own = land.lnd_own;
|
|
} else {
|
|
getsect(pp->pln_x, pp->pln_y, §);
|
|
item = sect.sct_item;
|
|
own = sect.sct_oldown;
|
|
}
|
|
if (pcp->pl_fuel > item[I_PETROL]) {
|
|
pr("%s not enough petrol there!\n", prplane(pp));
|
|
return -1;
|
|
}
|
|
item[I_PETROL] -= pcp->pl_fuel;
|
|
load = pln_load(pp);
|
|
itype = I_NONE;
|
|
switch (mission) {
|
|
case 's': /* strategic bomb */
|
|
case 'p': /* pinpoint bomb */
|
|
itype = I_SHELL;
|
|
break;
|
|
case 't': /* transport */
|
|
if (!(pcp->pl_flags & P_C) || !ip)
|
|
break;
|
|
itype = ip->i_uid;
|
|
load *= 2;
|
|
break;
|
|
case 'm': /* mine */
|
|
if ((pcp->pl_flags & P_MINE) == 0)
|
|
break;
|
|
itype = I_SHELL;
|
|
load *= 2;
|
|
break;
|
|
case 'd': /* drop */
|
|
if (!(pcp->pl_flags & P_C) || CANT_HAPPEN(!ip))
|
|
break;
|
|
itype = ip->i_uid;
|
|
if (pcp->pl_flags & P_V)
|
|
load *= 2;
|
|
break;
|
|
case 'a': /* paradrop */
|
|
if (!(pcp->pl_flags & P_P))
|
|
break;
|
|
itype = I_MILIT;
|
|
if (pcp->pl_flags & P_V)
|
|
load *= 2;
|
|
break;
|
|
case 'r': /* reconnaissance */
|
|
case 'e': /* escort */
|
|
load = 0;
|
|
break;
|
|
case 'i': /* missile interception */
|
|
if (CANT_HAPPEN(!(pcp->pl_flags & P_M)
|
|
|| !(pcp->pl_flags & (P_N | P_O))))
|
|
break;
|
|
if (load)
|
|
itype = I_SHELL;
|
|
break;
|
|
default:
|
|
CANT_REACH();
|
|
load = 0;
|
|
}
|
|
|
|
if (itype != I_NONE) {
|
|
needed = load / ichr[itype].i_lbs;
|
|
if (needed <= 0) {
|
|
pr("%s can't contribute to mission\n", prplane(pp));
|
|
return -1;
|
|
}
|
|
if (nuk_on_plane(pp) >= 0) {
|
|
if (mission == 's' || mission == 't')
|
|
needed = 0;
|
|
else {
|
|
pr("%s can't fly this mission"
|
|
" while it is carrying a nuclear weapon",
|
|
prplane(pp));
|
|
return -1;
|
|
}
|
|
}
|
|
if (itype == I_CIVIL && pp->pln_own != own) {
|
|
pr("You don't control those civilians!\n");
|
|
return -1;
|
|
}
|
|
#if 0
|
|
/* Supply is broken somewhere, so don't use it for now */
|
|
if (itype == I_SHELL && item[itype] < needed)
|
|
item[itype] += supply_commod(plp->plane.pln_own,
|
|
plp->plane.pln_x,
|
|
plp->plane.pln_y,
|
|
I_SHELL, needed);
|
|
#endif
|
|
abandon_needed = !!would_abandon(§, itype, needed, NULL);
|
|
if (item[itype] < needed + abandon_needed) {
|
|
pr("Not enough %s for %s\n", ichr[itype].i_name, prplane(pp));
|
|
return -1;
|
|
}
|
|
item[itype] -= needed;
|
|
plp->load = needed;
|
|
}
|
|
|
|
if (pp->pln_ship >= 0) {
|
|
if (pp->pln_own != ship.shp_own) {
|
|
wu(0, ship.shp_own,
|
|
"%s %s prepares for takeoff from ship %s\n",
|
|
cname(pp->pln_own), prplane(pp), prship(&ship));
|
|
}
|
|
putship(ship.shp_uid, &ship);
|
|
} else if (pp->pln_land >= 0) {
|
|
if (pp->pln_own != land.lnd_own) {
|
|
wu(0, land.lnd_own,
|
|
"%s %s prepares for takeoff from unit %s\n",
|
|
cname(pp->pln_own), prplane(pp), prland(&land));
|
|
}
|
|
putland(land.lnd_uid, &land);
|
|
} else {
|
|
if (pp->pln_own != sect.sct_own) {
|
|
wu(0, sect.sct_own, "%s %s prepares for takeoff from %s\n",
|
|
cname(pp->pln_own), prplane(pp),
|
|
xyas(sect.sct_x, sect.sct_y, sect.sct_own));
|
|
}
|
|
putsect(§);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
pln_put(struct emp_qelem *list)
|
|
{
|
|
struct emp_qelem *qp, *next;
|
|
|
|
for (qp = list->q_forw; qp != list; qp = next) {
|
|
next = qp->q_forw;
|
|
pln_put1((struct plist *)qp);
|
|
}
|
|
}
|
|
|
|
void
|
|
pln_put1(struct plist *plp)
|
|
{
|
|
struct plnstr *pp;
|
|
struct shpstr ship;
|
|
struct sctstr sect;
|
|
|
|
pp = &plp->plane;
|
|
|
|
if (CANT_HAPPEN((pp->pln_flags & PLN_LAUNCHED)
|
|
&& (plchr[pp->pln_type].pl_flags & P_M)
|
|
&& pp->pln_effic >= PLANE_MINEFF))
|
|
pp->pln_effic = 0; /* bug: missile launched but not used up */
|
|
|
|
if (!(pp->pln_flags & PLN_LAUNCHED))
|
|
; /* never took off */
|
|
else if (pp->pln_effic < PLANE_MINEFF) {
|
|
; /* destroyed */
|
|
} else if (pp->pln_ship >= 0) {
|
|
/* It is landing on a carrier */
|
|
getship(pp->pln_ship, &ship);
|
|
/* We should do more, like make sure it's really
|
|
a carrier, etc. but for now just make sure it's
|
|
not sunk. */
|
|
if (ship.shp_effic < SHIP_MINEFF) {
|
|
mpr(pp->pln_own,
|
|
"Ship #%d has been sunk, plane #%d has nowhere to land, and\n"
|
|
"splashes into the sea.\n",
|
|
pp->pln_ship, pp->pln_uid);
|
|
pp->pln_effic = 0;
|
|
}
|
|
} else {
|
|
/* Presume we are landing back in a sector. */
|
|
getsect(pp->pln_x, pp->pln_y, §);
|
|
if (sect.sct_type == SCT_WATER || sect.sct_type == SCT_WASTE) {
|
|
mpr(pp->pln_own,
|
|
"Nowhere to land at %s, plane #%d crashes and burns...\n",
|
|
xyas(pp->pln_x, pp->pln_y, pp->pln_own), pp->pln_uid);
|
|
pp->pln_effic = 0;
|
|
}
|
|
}
|
|
pp->pln_flags &= ~PLN_LAUNCHED;
|
|
putplane(pp->pln_uid, pp);
|
|
emp_remque(&plp->queue);
|
|
free(plp);
|
|
}
|
|
|
|
/*
|
|
* Can PP be loaded on a ship of SP's type?
|
|
* Assume that it already carries N planes, of which NCH are choppers,
|
|
* NXL xlight, NMSL light missiles, and the rest are light fixed-wing
|
|
* planes.
|
|
*/
|
|
int
|
|
could_be_on_ship(struct plnstr *pp, struct shpstr *sp,
|
|
int n, int nch, int nxl, int nmsl)
|
|
{
|
|
struct plchrstr *pcp = &plchr[pp->pln_type];
|
|
struct mchrstr *mcp = &mchr[sp->shp_type];
|
|
|
|
if (pcp->pl_flags & P_K)
|
|
nch++;
|
|
else if (pcp->pl_flags & P_E)
|
|
nxl++;
|
|
else if (!(pcp->pl_flags & P_L))
|
|
return 0;
|
|
else if (pcp->pl_flags & P_M)
|
|
nmsl++;
|
|
n++;
|
|
|
|
n -= MIN(nch, mcp->m_nchoppers);
|
|
n -= MIN(nxl, mcp->m_nxlight);
|
|
if (nmsl && !(mcp->m_flags & (M_MSL | M_FLY)))
|
|
return 0; /* missile slots wanted */
|
|
if (nmsl < n && !(mcp->m_flags & M_FLY))
|
|
return 0; /* fixed-wing slots wanted */
|
|
return n <= mcp->m_nplanes;
|
|
}
|
|
|
|
/*
|
|
* Fit a plane of PP's type on ship SP.
|
|
* Updating the plane accordingly is the caller's job.
|
|
* Return whether it fits.
|
|
*/
|
|
static int
|
|
fit_plane_on_ship(struct plnstr *pp, struct shpstr *sp)
|
|
{
|
|
int n, nch, nxl, nmsl;
|
|
|
|
n = shp_nplane(sp, &nch, &nxl, &nmsl);
|
|
return could_be_on_ship(pp, sp, n, nch, nxl, nmsl);
|
|
}
|
|
|
|
int
|
|
put_plane_on_ship(struct plnstr *plane, struct shpstr *ship)
|
|
{
|
|
if (plane->pln_ship == ship->shp_uid)
|
|
return 1; /* Already on ship */
|
|
|
|
if (!fit_plane_on_ship(plane, ship))
|
|
return 0;
|
|
|
|
plane->pln_x = ship->shp_x;
|
|
plane->pln_y = ship->shp_y;
|
|
plane->pln_ship = ship->shp_uid;
|
|
putplane(plane->pln_uid, plane);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Fit a plane of PP's type on land unit LP.
|
|
* Updating the plane accordingly is the caller's job.
|
|
* Return whether it fits.
|
|
*/
|
|
static int
|
|
fit_plane_on_land(struct plnstr *pp, struct lndstr *lp)
|
|
{
|
|
struct plchrstr *pcp = plchr + pp->pln_type;
|
|
struct lchrstr *lcp = lchr + lp->lnd_type;
|
|
|
|
return (pcp->pl_flags & P_E) && lnd_nxlight(lp) < lcp->l_nxlight;
|
|
}
|
|
|
|
int
|
|
put_plane_on_land(struct plnstr *plane, struct lndstr *land)
|
|
{
|
|
if (plane->pln_land == land->lnd_uid)
|
|
return 1; /* Already on unit */
|
|
|
|
if (!fit_plane_on_land(plane, land))
|
|
return 0;
|
|
|
|
plane->pln_x = land->lnd_x;
|
|
plane->pln_y = land->lnd_y;
|
|
plane->pln_land = land->lnd_uid;
|
|
putplane(plane->pln_uid, plane);
|
|
return 1;
|
|
}
|
|
|
|
void
|
|
plane_sweep(struct emp_qelem *plane_list, coord x, coord y)
|
|
{
|
|
struct plnstr *pp;
|
|
struct plchrstr *pcp;
|
|
struct emp_qelem *qp;
|
|
struct emp_qelem *next;
|
|
struct plist *ip;
|
|
struct sctstr sect;
|
|
int mines_there;
|
|
int found = 0;
|
|
|
|
getsect(x, y, §);
|
|
mines_there = sect.sct_mines;
|
|
|
|
if (mines_there == 0)
|
|
return;
|
|
|
|
if (sect.sct_type != SCT_WATER)
|
|
return;
|
|
|
|
for (qp = plane_list->q_forw; ((qp != plane_list) && (mines_there));
|
|
qp = next) {
|
|
next = qp->q_forw;
|
|
ip = (struct plist *)qp;
|
|
pp = &ip->plane;
|
|
pcp = ip->pcp;
|
|
if (!(pcp->pl_flags & P_SWEEP)) /* if it isn't an sweep plane */
|
|
continue;
|
|
|
|
if (chance((100.0 - pln_acc(pp)) / 100.0)) {
|
|
pr("Sweep! in %s\n",
|
|
xyas(sect.sct_x, sect.sct_y, pp->pln_own));
|
|
mines_there--;
|
|
found = 1;
|
|
}
|
|
}
|
|
|
|
if (found && map_set(player->cnum, sect.sct_x, sect.sct_y, 'X', 0))
|
|
writemap(player->cnum);
|
|
sect.sct_mines = mines_there;
|
|
putsect(§);
|
|
}
|
|
|
|
int
|
|
pln_hitchance(struct plnstr *pp, int hardtarget, int type)
|
|
{
|
|
struct plchrstr *pcp = plchr + pp->pln_type;
|
|
double tfact = (double)(pp->pln_tech - pcp->pl_tech) /
|
|
(pp->pln_tech - pcp->pl_tech / 2);
|
|
int acc = pln_acc(pp);
|
|
int hitchance;
|
|
|
|
if (type == EF_SHIP) {
|
|
if (pcp->pl_flags & P_A)
|
|
acc -= 20;
|
|
if (!(pcp->pl_flags & P_T))
|
|
acc += 35;
|
|
}
|
|
hitchance = (int)(pp->pln_effic * (1.0 - 0.1 * tfact) *
|
|
(1.0 - acc / 100.0)) - hardtarget;
|
|
|
|
/* smooth out the bottom of the graph with asymtote at 5 -KHS */
|
|
if (hitchance < 20)
|
|
hitchance = 5 + ldround(300.0 / (40.0 - hitchance), 1);
|
|
if (hitchance > 100)
|
|
hitchance = 100;
|
|
return hitchance;
|
|
}
|
|
|
|
int
|
|
pln_damage(struct plnstr *pp, char type, int noisy)
|
|
{
|
|
struct plchrstr *pcp = plchr + pp->pln_type;
|
|
int load, i;
|
|
int hitroll;
|
|
int dam = 0;
|
|
int aim;
|
|
int effective = 1;
|
|
int pinbomber = 0;
|
|
|
|
if (CANT_HAPPEN(nuk_on_plane(pp) >= 0))
|
|
return 0;
|
|
|
|
load = pln_load(pp);
|
|
if (!load) /* e.g. ab, blowing up on launch pad */
|
|
return 0;
|
|
|
|
i = roll(load) + 1;
|
|
if (i > load)
|
|
i = load;
|
|
|
|
if (pcp->pl_flags & P_M) {
|
|
if (pcp->pl_flags & P_MAR)
|
|
pinbomber = 1;
|
|
} else if (pcp->pl_flags & P_T)
|
|
pinbomber = 1;
|
|
|
|
aim = pln_acc(pp);
|
|
if (type == 's') {
|
|
effective = !pinbomber;
|
|
aim = 30 + (pinbomber ? aim : 100 - aim);
|
|
} else {
|
|
effective = pinbomber;
|
|
aim = 100 - aim;
|
|
}
|
|
|
|
while (i--) {
|
|
dam += roll(6);
|
|
hitroll = roll(100);
|
|
if (hitroll >= 90) {
|
|
dam += 8;
|
|
if (noisy)
|
|
mpr(pp->pln_own, "BLAM");
|
|
} else if (hitroll < aim) {
|
|
dam += 5;
|
|
if (noisy)
|
|
mpr(pp->pln_own, "Blam");
|
|
} else {
|
|
dam += 1;
|
|
if (noisy)
|
|
mpr(pp->pln_own, "blam");
|
|
}
|
|
if (i && noisy)
|
|
mpr(pp->pln_own, "-");
|
|
}
|
|
if (noisy)
|
|
mpr(pp->pln_own, "\n");
|
|
if (effective)
|
|
dam *= 2;
|
|
return dam;
|
|
}
|
|
|
|
int
|
|
pln_identchance(struct plnstr *pp, int hardtarget, int type)
|
|
{
|
|
double misschance =
|
|
(100.0 - pln_hitchance(pp, hardtarget, type)) / 100.0;
|
|
return (int)(100 - 100 * misschance * misschance);
|
|
}
|
|
|
|
int
|
|
pln_mobcost(int dist, struct plnstr *pp, char mission)
|
|
{
|
|
double cost;
|
|
|
|
cost = 20.0 / (pp->pln_effic / 100.0);
|
|
if (mission == 'e' || mission == 0)
|
|
cost /= 2; /* escort or intercept */
|
|
|
|
return ldround(cost * dist / pln_range_max(pp) + 5, 1);
|
|
}
|
|
|
|
int
|
|
pln_is_in_orbit(struct plnstr *pp)
|
|
{
|
|
return (plchr[pp->pln_type].pl_flags & (P_M | P_O)) == P_O
|
|
&& (pp->pln_flags & PLN_LAUNCHED);
|
|
}
|
|
|
|
/*
|
|
* Set PP's tech to TLEV along with everything else that depends on it.
|
|
*/
|
|
void
|
|
pln_set_tech(struct plnstr *pp, int tlev)
|
|
{
|
|
struct plchrstr *pcp = plchr + pp->pln_type;
|
|
int limited_range = pp->pln_range < pln_range_max(pp);
|
|
int range_max;
|
|
|
|
if (CANT_HAPPEN(tlev < pcp->pl_tech))
|
|
tlev = pcp->pl_tech;
|
|
pp->pln_tech = tlev;
|
|
|
|
range_max = pln_range_max(pp);
|
|
if (!limited_range || pp->pln_range > range_max)
|
|
pp->pln_range = range_max;
|
|
}
|