2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2006, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure
6 * This program 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 2 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, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * See the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
23 * related information and legal notices. It is expected that any future
24 * projects/authors will amend these files as needed.
28 * atta.c: Attack another sector
30 * Known contributors to this file:
55 struct combat off[6]; /* attacking sectors */
56 struct combat def[1]; /* defending sector */
59 int fort_sup, ship_sup, land_sup, plane_sup;
60 struct emp_qelem olist; /* attacking units */
61 struct emp_qelem dlist; /* defending units */
62 int ototal; /* total attacking strength */
63 int a_engineer = 0; /* attacker engineers are present */
64 int a_spy = 0; /* the best attacker scout */
65 double osupport = 1.0; /* attack support */
66 double dsupport = 1.0; /* defense support */
72 att_combat_init(def, EF_SECTOR);
74 * Collect input from the attacker
77 /* What are we attacking? */
79 if (!(p = getstarg(player->argp[1], "Sector : ", buf)))
81 if (!sarg_xy(p, &def->x, &def->y))
83 if (att_abort(A_ATTACK, 0, def))
86 /* Show what we're attacking, and check treaties */
91 /* Ask about offensive support */
93 att_ask_support(2, &fort_sup, &ship_sup, &land_sup, &plane_sup);
94 if (att_abort(A_ATTACK, 0, def)) {
95 att_empty_attack(A_ATTACK, 0, def);
99 /* initialize the off[] array */
101 for (n = 0, last = -1; n < 6; ++n) { /* Directions */
102 newx = def->x + diroff[n + 1][0];
103 newy = def->y + diroff[n + 1][1];
104 getsect(newx, newy, §); /* incase cross world boundary */
105 rel = getrel(getnatp(sect.sct_own), player->cnum);
106 if (!player->owner && rel != ALLIED)
108 att_combat_init(&off[++last], EF_SECTOR);
109 off[last].x = sect.sct_x;
110 off[last].y = sect.sct_y;
114 /* Ask the player what he wants to attack with */
116 att_ask_offense(A_ATTACK, off, def, &olist, &a_spy, &a_engineer);
117 if (att_abort(A_ATTACK, off, def)) {
118 pr("Attack aborted\n");
119 att_empty_attack(A_ATTACK, 0, def);
120 return att_free_lists(&olist, 0);
124 * Estimate the defense strength and give the player a chance to abort
127 ototal = att_estimate_defense(A_ATTACK, off, &olist, def, a_spy);
128 if (att_abort(A_ATTACK, off, def)) {
129 pr("Attack aborted\n");
130 att_empty_attack(A_ATTACK, 0, def);
131 return att_free_lists(&olist, 0);
135 * We have now got all the answers from the attacker. From this point
136 * forward, we can assume that this battle is the _only_ thing
137 * happening in the game.
140 /* Get the real defense */
142 att_get_defense(&olist, def, &dlist, a_spy, ototal);
144 /* Get attacker and defender support */
146 att_get_support(A_ATTACK, fort_sup, ship_sup, land_sup, plane_sup,
147 &olist, off, &dlist, def, &osupport, &dsupport,
149 if (att_abort(A_ATTACK, off, def)) {
150 pr("Attack aborted\n");
151 att_empty_attack(A_ATTACK, 0, def);
152 return att_free_lists(&olist, &dlist);
156 * Death, carnage, and destruction.
159 att_fight(A_ATTACK, off, &olist, osupport, def, &dlist, dsupport);