2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2011, 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 * para.c: Drop paratroopers onto a sector
29 * Known contributors to this file:
32 * Markus Armbruster, 2004-2011
44 static int paradrop(struct emp_qelem *list, coord x, coord y);
52 char flightpath[MAX_PATH_LEN];
53 struct nstr_item ni_bomb;
54 struct nstr_item ni_esc;
56 struct emp_qelem bomb_list;
57 struct emp_qelem esc_list;
58 struct sctstr ap_sect;
61 if (get_planes(&ni_bomb, &ni_esc, player->argp[1], player->argp[2]) < 0)
63 if (!get_assembly_point(player->argp[3], &ap_sect, buf))
67 if (!getpath(flightpath, player->argp[4], ax, ay, 0, 0, MOB_FLY)
72 (void)pathtoxy(flightpath, &tx, &ty, fcost);
73 getsect(tx, ty, &target);
74 pr("LZ is %s\n", xyas(tx, ty, player->cnum));
75 ap_to_target = strlen(flightpath);
76 if (flightpath[ap_to_target - 1] == 'h')
78 pr("range to target is %d\n", ap_to_target);
79 if (target.sct_own == player->cnum) {
80 pr("You can't air-assault your own sector!\n");
84 * select planes within range
86 pln_sel(&ni_bomb, &bomb_list, &ap_sect, ap_to_target, 2,
87 P_P | P_C, P_M | P_O);
88 pln_sel(&ni_esc, &esc_list, &ap_sect, ap_to_target, 2,
89 P_ESC | P_F, P_M | P_O);
91 * now arm and equip the bombers, transports, whatever.
93 pln_arm(&bomb_list, 2 * ap_to_target, 'a', NULL);
94 if (QEMPTY(&bomb_list)) {
95 pr("No planes could be equipped for the mission.\n");
98 pln_arm(&esc_list, 2 * ap_to_target, 'e', NULL);
99 ac_encounter(&bomb_list, &esc_list, ax, ay, flightpath, 0);
100 if (QEMPTY(&bomb_list)) {
101 pr("No planes got through fighter defenses\n");
103 getsect(tx, ty, &target);
104 paradrop(&bomb_list, tx, ty);
112 paradrop(struct emp_qelem *list, coord x, coord y)
114 struct combat off[1]; /* assaulting ship or sector */
115 struct combat def[1]; /* defending ship */
116 struct emp_qelem olist; /* assaulting units */
117 struct emp_qelem dlist; /* defending units */
118 int ototal; /* total assaulting strength */
119 int a_engineer = 0; /* assaulter engineers are present */
120 int a_spy = 0; /* the best assaulter scout */
121 double osupport = 1.0; /* assault support */
122 double dsupport = 1.0; /* defense support */
124 struct emp_qelem *qp;
126 /* Check for valid attack */
128 att_combat_init(def, EF_SECTOR);
131 if (att_abort(A_PARA, NULL, def))
134 /* Show what we're air-assaulting, and check treaties */
139 /* set what we're air-assaulting with */
142 att_combat_init(off, EF_PLANE);
143 for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
144 plp = (struct plist *)qp;
145 off->troops += plp->load;
147 off->mil = off->troops;
148 if (att_abort(A_PARA, off, def)) {
149 pr("Air-Assault aborted\n");
153 ototal = att_get_offense(A_PARA, off, &olist, def);
154 if (att_abort(A_PARA, off, def)) {
155 pr("Air-assault aborted\n");
159 /* Get the defense */
161 att_get_defense(&olist, def, &dlist, a_spy, ototal);
163 /* Get defender support */
165 att_get_support(A_PARA, 0, 0, 0, 0,
166 &olist, off, &dlist, def, &osupport, &dsupport,
169 if (att_abort(A_PARA, off, def)) {
170 pr("Air-assault aborted\n");
174 * Death, carnage, and destruction.
177 att_fight(A_PARA, off, &olist, osupport, def, &dlist, dsupport);