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]))
80 if (!snxtitem(&ni_esc, EF_PLANE, getstarg(player->argp[2], "escort(s)? ", buf)))
81 pr("No escorts...\n");
82 if ((p = getstarg(player->argp[3], "assembly point? ", buf)) == 0 || *p == 0)
84 if (!sarg_xy(p, &x, &y) || !getsect(x, y, &ap_sect))
86 if (ap_sect.sct_own && ap_sect.sct_own != player->cnum &&
87 getrel(getnatp(ap_sect.sct_own), player->cnum) != ALLIED) {
88 pr("Assembly point not owned by you or an ally!\n");
93 if (getpath(flightpath, player->argp[4], ax, ay, 0,
94 0, 0, P_FLYING) == 0 || *flightpath == 0)
98 (void) pathtoxy(flightpath, &tx, &ty, fcost);
99 getsect(tx, ty, &target);
100 pr("LZ is %s\n", xyas(tx, ty, player->cnum));
101 ap_to_target = strlen(flightpath);
102 if (*(flightpath+strlen(flightpath)-1) == 'h')
104 pr("range to target is %d\n", ap_to_target);
106 * select planes within range
108 pln_sel(&ni_bomb, &bomb_list, &ap_sect, ap_to_target,
109 2, P_C|wantflags, P_M|P_O);
110 pln_sel(&ni_esc, &esc_list, &ap_sect, ap_to_target,
111 2, P_ESC|P_F, P_M|P_O);
113 * now arm and equip the bombers, transports, whatever.
114 * tech is stored in high 16 bits of mission_flags.
119 mission_flags |= P_X; /* stealth (shhh) */
120 mission_flags |= P_H; /* gets turned off if not all choppers */
121 mission_flags = pln_arm(&bomb_list, 2*ap_to_target, 'a', &ichr[I_MILIT],
122 0, mission_flags,&tech);
123 if (QEMPTY(&bomb_list)) {
124 pr("No planes could be equipped for the mission.\n");
127 mission_flags = pln_arm(&esc_list, 2*ap_to_target, 'a', &ichr[I_MILIT],
128 P_ESC|P_F, mission_flags,&tech);
129 ac_encounter(&bomb_list,&esc_list,ax,ay,flightpath,mission_flags,0,0,0);
130 if (QEMPTY(&bomb_list)) {
131 pr("No planes got through fighter defenses\n");
133 getsect(tx, ty, &target);
134 paradrop(&bomb_list, tx, ty);
142 paradrop(struct emp_qelem *list, coord x, coord y)
144 struct combat off[1]; /* assaulting ship or sector */
145 struct combat def[1]; /* defending ship */
146 struct emp_qelem olist; /* assaulting units */
147 struct emp_qelem dlist; /* defending units */
148 int ototal; /* total assaulting strength */
149 int a_engineer = 0; /* assaulter engineers are present */
150 int a_spy = 0; /* the best assaulter scout */
151 double osupport = 1.0; /* assault support */
152 double dsupport = 1.0; /* defense support */
154 struct emp_qelem *qp;
156 /* Check for valid attack */
158 att_combat_init(def, EF_SECTOR);
161 if (att_abort(A_PARA, 0, def))
164 /* Show what we're air-assaulting, and check treaties */
169 /* set what we're air-assaulting with */
172 att_combat_init(off, EF_PLANE);
173 for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
174 plp = (struct plist *) qp;
175 if (plp->pcp->pl_flags & (P_V|P_C))
176 off->troops += plp->misc;
178 off->mil = off->troops;
179 if (att_abort(A_PARA, off, def)) {
180 pr("Air-Assault aborted\n");
186 ototal = att_estimate_defense(A_PARA, off, &olist, def, a_spy);
187 if (att_abort(A_PARA, off, def)) {
188 pr("Air-assault aborted\n");
192 /* Get the defense */
194 att_get_defense(&olist, def, &dlist, a_spy, ototal);
196 /* Get defender support */
198 att_get_support(A_PARA, 0, 0, 0, 0,
199 &olist, off, &dlist, def, &osupport, &dsupport,
202 if (att_abort(A_PARA, off, def)) {
203 pr("Air-assault aborted\n");
207 * Death, carnage, and destruction.
210 att_fight(A_PARA,off,&olist,osupport,def,&dlist,dsupport);