2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2020, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
6 * Empire is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 * See files README, COPYING and CREDITS in the root of the source
22 * tree for related information and legal notices. It is expected
23 * that future projects/authors will amend these files as needed.
27 * boar.c: Board an enemy ship
29 * Known contributors to this file:
31 * Markus Armbruster, 2011-2015
45 struct combat off[1]; /* boarding ship or sector */
46 struct combat def[1]; /* defending ship */
47 struct emp_qelem olist; /* boarding units */
48 struct emp_qelem dlist; /* defending units */
49 int ototal; /* total boarding strength */
50 int a_engineer = 0; /* boarder engineers are present */
51 int a_spy = 0; /* the best boarder scout */
52 struct shpstr ship; /* for retreating */
56 int foundland, def_uid;
61 att_combat_init(def, EF_SHIP);
63 * Collect input from the boarder
66 /* What are we boarding? */
67 p = getstarg(player->argp[1], "Victim ship #? ", buf);
68 if (!p || (def->shp_uid = atoi(p)) < 0)
72 * Ask the boarder what he wants to board with
75 if (!(p = getstarg(player->argp[2], "Boarding party from? ", buf)))
78 att_combat_init(off, EF_SECTOR);
79 if (!sarg_xy(p, &off->x, &off->y))
81 getsect(off->x, off->y, §);
82 if (sect.sct_own != player->cnum) {
83 pr("You don't own %s!\n", xyas(off->x, off->y, player->cnum));
86 if (sect.sct_mobil <= 0) {
87 /* Look for land units with mobility */
88 snxtitem_xy(&ni, EF_LAND, off->x, off->y);
90 while (nxtitem(&ni, &land)) {
91 if (land.lnd_own != player->cnum)
93 if (land.lnd_ship >= 0 || land.lnd_land >= 0)
95 if (land.lnd_mobil <= 0)
97 /* Only land units with assault can board */
98 if (!(lchr[(int)land.lnd_type].l_flags & L_ASSAULT))
103 pr("You don't have any mobility (sector or land units) in %s!\n",
104 xyas(off->x, off->y, player->cnum));
109 att_combat_init(off, EF_SHIP);
110 if ((off->shp_uid = atoi(p)) < 0)
113 if (att_abort(A_BOARD, off, def)) {
114 pr("Board aborted\n");
118 /* Fire at the attacking ship */
120 att_approach(off, def);
121 if (att_abort(A_BOARD, off, def)) {
122 pr("Board aborted\n");
123 att_empty_attack(A_BOARD, 0, def);
127 /* Show what we're boarding */
130 /* Ask the player what he wants to board with */
132 att_ask_offense(A_BOARD, off, def, &olist, &a_spy, &a_engineer);
133 if (att_abort(A_BOARD, off, def)) {
134 pr("Board aborted\n");
135 att_empty_attack(A_BOARD, 0, def);
136 return att_free_lists(&olist, NULL);
139 ototal = att_get_offense(A_BOARD, off, &olist, def);
140 if (att_abort(A_BOARD, off, def)) {
141 pr("Board aborted\n");
142 att_empty_attack(A_BOARD, 0, def);
143 return att_free_lists(&olist, NULL);
147 * We have now got all the answers from the boarder. From this point
148 * forward, we can assume that this battle is the _only_ thing
149 * happening in the game.
152 /* Get the real defense */
154 att_get_defense(&olist, def, &dlist, a_spy, ototal);
157 * Death, carnage, and destruction.
161 * Careful: when the fight sinks the ship, put_combat() clobbers
162 * *def (see FIXME there).
164 def_uid = def->shp_uid;
166 if (!(att_fight(A_BOARD, off, &olist, 1.0, def, &dlist, 1.0))) {
167 getship(def_uid, &ship);
168 if (ship.shp_rflags & RET_BOARDED) {
169 retreat_ship(&ship, def_own, 'u');
170 putship(def_uid, &ship);