2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2000, 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 * para.c: Drop paratroopers onto a sector
30 * Known contributors to this file:
55 static int paradrop(struct emp_qelem *list, coord x, coord y);
66 s_char flightpath[MAX_PATH_LEN];
67 struct nstr_item ni_bomb;
68 struct nstr_item ni_esc;
71 struct emp_qelem bomb_list;
72 struct emp_qelem esc_list;
74 struct sctstr ap_sect;
78 if (!snxtitem(&ni_bomb, EF_PLANE, player->argp[1]))
81 (&ni_esc, EF_PLANE, getstarg(player->argp[2], "escort(s)? ", buf)))
82 pr("No escorts...\n");
83 if ((p = getstarg(player->argp[3], "assembly point? ", buf)) == 0
86 if (!sarg_xy(p, &x, &y) || !getsect(x, y, &ap_sect))
88 if (ap_sect.sct_own && ap_sect.sct_own != player->cnum &&
89 getrel(getnatp(ap_sect.sct_own), player->cnum) != ALLIED) {
90 pr("Assembly point not owned by you or an ally!\n");
95 if (getpath(flightpath, player->argp[4], ax, ay, 0,
96 0, 0, P_FLYING) == 0 || *flightpath == 0)
100 (void)pathtoxy(flightpath, &tx, &ty, fcost);
101 getsect(tx, ty, &target);
102 pr("LZ is %s\n", xyas(tx, ty, player->cnum));
103 ap_to_target = strlen(flightpath);
104 if (*(flightpath + strlen(flightpath) - 1) == 'h')
106 pr("range to target is %d\n", ap_to_target);
108 * select planes within range
110 pln_sel(&ni_bomb, &bomb_list, &ap_sect, ap_to_target,
111 2, P_C | wantflags, P_M | P_O);
112 pln_sel(&ni_esc, &esc_list, &ap_sect, ap_to_target,
113 2, P_ESC | P_F, P_M | P_O);
115 * now arm and equip the bombers, transports, whatever.
116 * tech is stored in high 16 bits of mission_flags.
121 mission_flags |= P_X; /* stealth (shhh) */
122 mission_flags |= P_H; /* gets turned off if not all choppers */
124 pln_arm(&bomb_list, 2 * ap_to_target, 'a', &ichr[I_MILIT], 0,
125 mission_flags, &tech);
126 if (QEMPTY(&bomb_list)) {
127 pr("No planes could be equipped for the mission.\n");
131 pln_arm(&esc_list, 2 * ap_to_target, 'a', &ichr[I_MILIT],
132 P_ESC | P_F, mission_flags, &tech);
133 ac_encounter(&bomb_list, &esc_list, ax, ay, flightpath, mission_flags,
135 if (QEMPTY(&bomb_list)) {
136 pr("No planes got through fighter defenses\n");
138 getsect(tx, ty, &target);
139 paradrop(&bomb_list, tx, ty);
147 paradrop(struct emp_qelem *list, coord x, coord y)
149 struct combat off[1]; /* assaulting ship or sector */
150 struct combat def[1]; /* defending ship */
151 struct emp_qelem olist; /* assaulting units */
152 struct emp_qelem dlist; /* defending units */
153 int ototal; /* total assaulting strength */
154 int a_engineer = 0; /* assaulter engineers are present */
155 int a_spy = 0; /* the best assaulter scout */
156 double osupport = 1.0; /* assault support */
157 double dsupport = 1.0; /* defense support */
159 struct emp_qelem *qp;
161 /* Check for valid attack */
163 att_combat_init(def, EF_SECTOR);
166 if (att_abort(A_PARA, 0, def))
169 /* Show what we're air-assaulting, and check treaties */
174 /* set what we're air-assaulting with */
177 att_combat_init(off, EF_PLANE);
178 for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
179 plp = (struct plist *)qp;
180 if (plp->pcp->pl_flags & (P_V | P_C))
181 off->troops += plp->misc;
183 off->mil = off->troops;
184 if (att_abort(A_PARA, off, def)) {
185 pr("Air-Assault aborted\n");
191 ototal = att_estimate_defense(A_PARA, off, &olist, def, a_spy);
192 if (att_abort(A_PARA, off, def)) {
193 pr("Air-assault aborted\n");
197 /* Get the defense */
199 att_get_defense(&olist, def, &dlist, a_spy, ototal);
201 /* Get defender support */
203 att_get_support(A_PARA, 0, 0, 0, 0,
204 &olist, off, &dlist, def, &osupport, &dsupport,
207 if (att_abort(A_PARA, off, def)) {
208 pr("Air-assault aborted\n");
212 * Death, carnage, and destruction.
215 att_fight(A_PARA, off, &olist, osupport, def, &dlist, dsupport);