2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2004, 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 * laun.c: Launch missiles from land or sea
30 * Known contributors to this file:
33 * Steve McClure, 1998-2000
52 static int launch_as(struct plnstr *pp);
53 static int launch_missile(struct plnstr *pp, int sublaunch);
54 static int launch_sat(struct plnstr *pp, int sublaunch);
62 struct nstr_item nstr;
71 if (!snxtitem(&nstr, EF_PLANE, player->argp[1]))
73 while (nxtitem(&nstr, (s_char *)&plane)) {
74 if (plane.pln_own != player->cnum)
76 pcp = &plchr[(int)plane.pln_type];
77 if ((pcp->pl_flags & (P_M | P_O)) == 0) {
78 pr("%s isn't a missile!\n", prplane(&plane));
81 if (pcp->pl_flags & P_F) {
82 pr("%s is a surface-to-air missile!\n", prplane(&plane));
85 if (pcp->pl_flags & P_N) {
86 pr("%s is an anti-ballistic-missile missile!\n",
90 if ((plane.pln_flags & PLN_LAUNCHED) && (pcp->pl_flags & P_O)) {
91 pr("%s already in orbit!\n", prplane(&plane));
95 if (ontradingblock(EF_PLANE, (int *)&plane)) {
96 pr("plane #%d inelligible - it's for sale.\n",
103 if (plane.pln_ship >= 0) {
104 getship(plane.pln_ship, &ship);
106 pr("%s: ship #%d was sunk!\n",
107 prplane(&plane), ship.shp_uid);
108 makelost(EF_PLANE, plane.pln_own, plane.pln_uid,
109 plane.pln_x, plane.pln_y);
111 putplane(plane.pln_uid, &plane);
114 natp = getnatp(ship.shp_own);
115 rel = getrel(natp, player->cnum);
116 if (ship.shp_own != player->cnum && rel != ALLIED) {
117 pr("%s: you or an ally do not own ship #%d\n",
118 prplane(&plane), ship.shp_uid);
119 makelost(EF_PLANE, plane.pln_own, plane.pln_uid,
120 plane.pln_x, plane.pln_y);
122 putplane(plane.pln_uid, &plane);
125 if (mchr[(int)ship.shp_type].m_flags & M_SUB)
129 getsect(plane.pln_x, plane.pln_y, §);
130 natp = getnatp(sect.sct_own);
131 rel = getrel(natp, player->cnum);
132 if (sect.sct_own && sect.sct_own != player->cnum
134 pr("%s: you or an ally do not own sector %s!\n",
135 prplane(&plane), xyas(plane.pln_x, plane.pln_y,
140 if (plane.pln_effic < 60) {
141 pr("%s is damaged (%d%%)\n", prplane(&plane), plane.pln_effic);
144 pr("%s at %s; range %d, eff %d%%\n", prplane(&plane),
145 xyas(plane.pln_x, plane.pln_y, player->cnum),
146 plane.pln_range, plane.pln_effic);
147 if (!(pcp->pl_flags & P_O)) {
148 if (launch_missile(&plane, sublaunch) < 0)
150 } else if ((pcp->pl_flags & (P_M | P_O)) == (P_M | P_O)) {
151 if (launch_as(&plane) < 0) /* anti-sat */
153 } else { /* satellites */
154 if (launch_sat(&plane, sublaunch) < 0)
157 makelost(EF_PLANE, plane.pln_own, plane.pln_uid, plane.pln_x,
160 putplane(plane.pln_uid, &plane);
166 * Launch an anti-sat weapon.
167 * Return -1 on failure, 0 on success (even if missile explodes).
171 launch_as(struct plnstr *pp)
174 s_char *cp, buf[1024];
181 if (msl_equip(pp) < 0) {
182 pr("%s not enough petrol or shells!\n", prplane(pp));
186 cp = getstarg(player->argp[2], "Target sector? ", buf);
187 if (!check_plane_ok(pp))
192 if (!sarg_xy(cp, &sx, &sy)) {
193 pr("Bad sector designation; try again!\n");
196 if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
197 pr("Range too great; try again!\n");
203 snxtitem_dist(&ni, EF_PLANE, sx, sy, 0);
204 while (!goodtarget && nxtitem(&ni, &plane)) {
207 if (!(plane.pln_flags & PLN_LAUNCHED))
213 pr("No satellites there!\n");
216 if (msl_hit(pp, plane.pln_def, EF_PLANE, N_SAT_KILL, N_SAT_KILL,
217 prplane(&plane), sx, sy, plane.pln_own)) {
218 dam = pln_damage(pp, sx, sy, 'p', &nukedam, 1);
219 oldown = plane.pln_own;
220 planedamage(&plane, dam);
221 pr("Hit satellite for %d%% damage!\n", dam);
223 "%s anti-sat did %d%% damage to %s over %s\n",
224 cname(player->cnum), dam, prplane(&plane),
225 xyas(plane.pln_x, plane.pln_y, plane.pln_own));
226 putplane(plane.pln_uid, &plane);
228 mpr(oldown, "Satellite shot down\n");
235 * Return -1 on failure, 0 on success (even if missile explodes).
238 launch_missile(struct plnstr *pp, int sublaunch)
240 struct plchrstr *pcp = plchr + pp->pln_type;
245 struct shpstr target_ship;
253 if (pcp->pl_flags & P_MAR)
254 cp = getstarg(player->argp[2], "Target ship? ", buf);
256 cp = getstarg(player->argp[2], "Target sector? ", buf);
260 if (!check_plane_ok(pp))
262 if (opt_PINPOINTMISSILE && sarg_type(cp) == NS_LIST) {
263 if (!(pcp->pl_flags & P_MAR)) {
264 pr("Missile not designed to attack ships!\n");
268 if ((n < 0) || !getship(n, &target_ship) ||
269 !target_ship.shp_own) {
270 pr("Bad ship number; try again!\n");
273 sx = target_ship.shp_x;
274 sy = target_ship.shp_y;
275 mcp = &mchr[(int)target_ship.shp_type];
276 if (mcp->m_flags & M_SUB) {
277 pr("Bad ship number; try again!\n");
280 } /* not PINPOINTMISSILE for ships */
281 else if (!sarg_xy(cp, &sx, &sy)) {
282 pr("That's no good! try again!\n");
284 } else if (opt_PINPOINTMISSILE) {
285 if (pcp->pl_flags & P_MAR) {
286 pr("Missile designed to attack ships!\n");
290 /* end PINPOINTMISSILE */
291 if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
292 pr("Range too great; try again!\n");
297 if (msl_equip(pp) < 0) {
298 pr("%s not enough shells!\n", prplane(pp));
301 if (opt_PINPOINTMISSILE == 0 || !(pcp->pl_flags & P_MAR)) {
302 getsect(sx, sy, §);
304 natp = getnatp(player->cnum);
305 rel = getrel(natp, sect.sct_own);
306 if ((rel != AT_WAR) && (sect.sct_own != player->cnum) &&
307 (sect.sct_own) && (sect.sct_oldown != player->cnum)) {
308 pr("You are not at war with the player->owner of the target sector!\n");
311 pr("Missile monitoring officer destroys RV before detonation.\n");
315 if (!msl_hit(pp, SECT_HARDTARGET, EF_SECTOR, N_SCT_MISS,
316 N_SCT_SMISS, "sector", sx, sy, sect.sct_own)) {
318 dam = pln_damage(pp, sect.sct_x, sect.sct_y, 's', &nukedam, 0);
319 collateral_damage(sect.sct_x, sect.sct_y, dam, 0);
323 dam = pln_damage(pp, sect.sct_x, sect.sct_y, 's', &nukedam, 1);
325 pr("did %d damage in %s\n", PERCENT_DAMAGE(dam),
326 xyas(sx, sy, player->cnum));
327 if (sect.sct_own != 0) {
330 "Sub missile attack did %d damage in %s\n",
331 dam, xyas(sx, sy, sect.sct_own));
334 "%s missile attack did %d damage in %s\n",
335 cname(player->cnum), dam,
336 xyas(sx, sy, sect.sct_own));
338 sectdamage(§, dam, 0);
341 } /* end PINPOINTMISSILE conditional */
342 else if (opt_PINPOINTMISSILE) { /* else */
343 if (!msl_hit(pp, shp_hardtarget(&target_ship), EF_SHIP,
344 N_SHP_MISS, N_SHP_SMISS, prship(&target_ship),
345 target_ship.shp_x, target_ship.shp_y,
346 target_ship.shp_own)) {
349 dam = pln_damage(pp,target_ship.shp_x,target_ship.shp_y,'p',&nukedam, 0);
350 collateral_damage(target_ship.shp_x, target_ship.shp_y, dam, 0);
355 pln_damage(pp, target_ship.shp_x, target_ship.shp_y, 'p',
358 check_retreat_and_do_shipdamage(&target_ship, dam);
359 if (target_ship.shp_effic < SHIP_MINEFF)
360 pr("\t%s sunk!\n", prship(&target_ship));
361 putship(target_ship.shp_uid, &target_ship);
363 getship(target_ship.shp_uid, &target_ship);
364 if (!target_ship.shp_own)
365 pr("%s sunk!\n", prship(&target_ship));
367 /* end PINPOINTMISSILE */
372 * Launch a satellite.
373 * Return -1 on error, 0 on success (even if the satellite fails).
376 launch_sat(struct plnstr *pp, int sublaunch)
378 struct plchrstr *pcp = plchr + pp->pln_type;
389 cp = getstarg(player->argp[2], "Target sector? ", buf);
390 if (!check_plane_ok(pp))
395 if (!sarg_xy(cp, &sx, &sy)) {
396 pr("Bad sector designation; try again!\n");
399 if ((dist = mapdist(pp->pln_x, pp->pln_y, sx, sy)) > pp->pln_range) {
400 pr("Range too great; try again!\n");
406 p = getstring("Geostationary orbit? ", buf);
409 if (!check_plane_ok(pp))
412 pp->pln_flags |= PLN_SYNCHRONOUS;
413 if (*p == 0 || *p == 'n')
414 pp->pln_flags &= ~(PLN_SYNCHRONOUS);
417 pr("3... 2... 1... Blastoff!!!\n");
418 if (chance(0.07 + (100 - pp->pln_effic) / 100.0)) {
419 pr("KABOOOOM! Range safety officer detonates booster!\n");
420 makelost(EF_PLANE, pp->pln_own, pp->pln_uid, pp->pln_x, pp->pln_y);
424 i = pp->pln_tech + pp->pln_effic;
425 if (chance(1.0 - (i / (i + 50.0)))) {
426 dir = (random() % 6) + 1;
427 sx += diroff[dir][0];
428 sy += diroff[dir][1];
429 pr("Your trajectory was a little off.\n");
431 nreport(player->cnum, N_LAUNCH, 0, 1);
432 pr("%s positioned over %s", prplane(pp), xyas(sx, sy, player->cnum));
433 if (msl_intercept(sx, sy, pp->pln_own, pcp->pl_def, sublaunch, P_O, 0)) {
438 pp->pln_flags |= PLN_LAUNCHED;
439 pp->pln_mobil = (pp->pln_mobil > dist) ? (pp->pln_mobil - dist) : 0;
440 putplane(pp->pln_uid, pp);
441 pr(", will be ready for use in %d time units\n", 127 - pp->pln_mobil);