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 files README, COPYING and CREDITS in the root of the source
23 * tree for related information and legal notices. It is expected
24 * that future projects/authors will amend these files as needed.
28 * para.c: Drop paratroopers onto a sector
30 * Known contributors to this file:
53 static int paradrop(struct emp_qelem *list, coord x, coord y);
62 s_char flightpath[MAX_PATH_LEN];
63 struct nstr_item ni_bomb;
64 struct nstr_item ni_esc;
66 struct emp_qelem bomb_list;
67 struct emp_qelem esc_list;
69 struct sctstr ap_sect;
73 if (!snxtitem(&ni_bomb, EF_PLANE, player->argp[1]))
75 if (!snxtitem(&ni_esc, EF_PLANE,
76 getstarg(player->argp[2], "escort(s)? ", buf)))
77 pr("No escorts...\n");
78 if (!get_assembly_point(player->argp[3], &ap_sect, buf))
82 if (getpath(flightpath, player->argp[4], ax, ay, 0, 0, P_FLYING) == 0
87 (void)pathtoxy(flightpath, &tx, &ty, fcost);
88 getsect(tx, ty, &target);
89 pr("LZ is %s\n", xyas(tx, ty, player->cnum));
90 ap_to_target = strlen(flightpath);
91 if (*(flightpath + strlen(flightpath) - 1) == 'h')
93 pr("range to target is %d\n", ap_to_target);
95 * select planes within range
97 pln_sel(&ni_bomb, &bomb_list, &ap_sect, ap_to_target,
98 2, P_C | wantflags, P_M | P_O);
99 pln_sel(&ni_esc, &esc_list, &ap_sect, ap_to_target,
100 2, P_ESC | P_F, P_M | P_O);
102 * now arm and equip the bombers, transports, whatever.
105 mission_flags |= P_X; /* stealth (shhh) */
106 mission_flags |= P_H; /* gets turned off if not all choppers */
107 mission_flags = pln_arm(&bomb_list, 2 * ap_to_target, 'a',
108 &ichr[I_MILIT], 0, mission_flags);
109 if (QEMPTY(&bomb_list)) {
110 pr("No planes could be equipped for the mission.\n");
113 mission_flags = pln_arm(&esc_list, 2 * ap_to_target, 'a',
114 &ichr[I_MILIT], P_ESC | P_F, mission_flags);
115 ac_encounter(&bomb_list, &esc_list, ax, ay, flightpath, mission_flags,
117 if (QEMPTY(&bomb_list)) {
118 pr("No planes got through fighter defenses\n");
120 getsect(tx, ty, &target);
121 paradrop(&bomb_list, tx, ty);
129 paradrop(struct emp_qelem *list, coord x, coord y)
131 struct combat off[1]; /* assaulting ship or sector */
132 struct combat def[1]; /* defending ship */
133 struct emp_qelem olist; /* assaulting units */
134 struct emp_qelem dlist; /* defending units */
135 int ototal; /* total assaulting strength */
136 int a_engineer = 0; /* assaulter engineers are present */
137 int a_spy = 0; /* the best assaulter scout */
138 double osupport = 1.0; /* assault support */
139 double dsupport = 1.0; /* defense support */
141 struct emp_qelem *qp;
143 /* Check for valid attack */
145 att_combat_init(def, EF_SECTOR);
148 if (att_abort(A_PARA, 0, def))
151 /* Show what we're air-assaulting, and check treaties */
156 /* set what we're air-assaulting with */
159 att_combat_init(off, EF_PLANE);
160 for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
161 plp = (struct plist *)qp;
162 if (plp->pcp->pl_flags & (P_V | P_C))
163 off->troops += plp->misc;
165 off->mil = off->troops;
166 if (att_abort(A_PARA, off, def)) {
167 pr("Air-Assault aborted\n");
173 ototal = att_estimate_defense(A_PARA, off, &olist, def, a_spy);
174 if (att_abort(A_PARA, off, def)) {
175 pr("Air-assault aborted\n");
179 /* Get the defense */
181 att_get_defense(&olist, def, &dlist, a_spy, ototal);
183 /* Get defender support */
185 att_get_support(A_PARA, 0, 0, 0, 0,
186 &olist, off, &dlist, def, &osupport, &dsupport,
189 if (att_abort(A_PARA, off, def)) {
190 pr("Air-assault aborted\n");
194 * Death, carnage, and destruction.
197 att_fight(A_PARA, off, &olist, osupport, def, &dlist, dsupport);