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 * laun.c: Launch missiles from land or sea
30 * Known contributors to this file:
33 * Steve McClure, 1998-2000
54 static int launch_as(struct plnstr *pp);
55 static int launch_missile(struct plnstr *pp, int sublaunch);
56 static int launch_sat(struct plnstr *pp, int sublaunch);
64 struct nstr_item nstr;
70 int rel, retval, gone;
73 if (!snxtitem(&nstr, EF_PLANE, player->argp[1]))
75 while (nxtitem(&nstr, &plane)) {
76 if (plane.pln_own != player->cnum)
78 pcp = &plchr[(int)plane.pln_type];
79 if ((pcp->pl_flags & (P_M | P_O)) == 0) {
80 pr("%s isn't a missile!\n", prplane(&plane));
83 if (pcp->pl_flags & P_F) {
84 pr("%s is a surface-to-air missile!\n", prplane(&plane));
87 if (pcp->pl_flags & P_N) {
88 pr("%s is an anti-ballistic-missile missile!\n",
92 if ((plane.pln_flags & PLN_LAUNCHED) && (pcp->pl_flags & P_O)) {
93 pr("%s already in orbit!\n", prplane(&plane));
97 if (ontradingblock(EF_PLANE, &plane)) {
98 pr("plane #%d inelligible - it's for sale.\n",
105 if (plane.pln_ship >= 0) {
106 getship(plane.pln_ship, &ship);
108 pr("%s: ship #%d was sunk!\n",
109 prplane(&plane), ship.shp_uid);
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);
120 putplane(plane.pln_uid, &plane);
123 if (mchr[(int)ship.shp_type].m_flags & M_SUB)
127 getsect(plane.pln_x, plane.pln_y, §);
128 natp = getnatp(sect.sct_own);
129 rel = getrel(natp, player->cnum);
130 if (sect.sct_own && sect.sct_own != player->cnum
132 pr("%s: you or an ally do not own sector %s!\n",
133 prplane(&plane), xyas(plane.pln_x, plane.pln_y,
138 if (plane.pln_effic < 60) {
139 pr("%s is damaged (%d%%)\n", prplane(&plane), plane.pln_effic);
142 pr("%s at %s; range %d, eff %d%%\n", prplane(&plane),
143 xyas(plane.pln_x, plane.pln_y, player->cnum),
144 plane.pln_range, plane.pln_effic);
145 if (!(pcp->pl_flags & P_O)) {
146 retval = launch_missile(&plane, sublaunch);
148 } else if ((pcp->pl_flags & (P_M | P_O)) == (P_M | P_O)) {
149 retval = launch_as(&plane);
151 } else { /* satellites */
152 retval = launch_sat(&plane, sublaunch);
153 gone = !(plane.pln_flags & PLN_LAUNCHED);
155 if (retval != RET_OK)
159 putplane(plane.pln_uid, &plane);
166 * Launch anti-sat weapon PP.
167 * Return RET_OK if launched (even when missile explodes),
168 * else RET_SYN or RET_FAIL.
171 launch_as(struct plnstr *pp)
181 if (msl_equip(pp) < 0) {
182 pr("%s not enough petrol or shells!\n", prplane(pp));
185 cp = getstarg(player->argp[2], "Target sector? ", buf);
186 if (!check_plane_ok(pp))
190 if (!sarg_xy(cp, &sx, &sy)) {
191 pr("Bad sector designation!\n");
194 if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
195 pr("Range too great!\n");
199 snxtitem_dist(&ni, EF_PLANE, sx, sy, 0);
200 while (!goodtarget && nxtitem(&ni, &plane)) {
203 if (!(plane.pln_flags & PLN_LAUNCHED))
209 pr("No satellites there!\n");
212 if (msl_hit(pp, plane.pln_def, EF_PLANE, N_SAT_KILL, N_SAT_KILL,
213 prplane(&plane), sx, sy, plane.pln_own)) {
214 dam = pln_damage(pp, sx, sy, 'p', &nukedam, 1);
215 oldown = plane.pln_own;
216 planedamage(&plane, dam);
217 pr("Hit satellite for %d%% damage!\n", dam);
218 mpr(oldown, "%s anti-sat did %d%% damage to %s over %s\n",
219 cname(player->cnum), dam, prplane(&plane),
220 xyas(plane.pln_x, plane.pln_y, plane.pln_own));
221 putplane(plane.pln_uid, &plane);
223 mpr(oldown, "Satellite shot down\n");
230 * If SUBLAUNCH, it's sub-launched.
231 * Return RET_OK if launched (even when missile explodes),
232 * else RET_SYN or RET_FAIL.
235 launch_missile(struct plnstr *pp, int sublaunch)
237 struct plchrstr *pcp = plchr + pp->pln_type;
242 struct shpstr target_ship;
249 if (pcp->pl_flags & P_MAR)
250 cp = getstarg(player->argp[2], "Target ship? ", buf);
252 cp = getstarg(player->argp[2], "Target sector? ", buf);
255 if (!check_plane_ok(pp))
257 if (opt_PINPOINTMISSILE && sarg_type(cp) == NS_LIST) {
258 if (!(pcp->pl_flags & P_MAR)) {
259 pr("Missile not designed to attack ships!\n");
263 if ((n < 0) || !getship(n, &target_ship) ||
264 !target_ship.shp_own) {
265 pr("Bad ship number!\n");
268 sx = target_ship.shp_x;
269 sy = target_ship.shp_y;
270 mcp = &mchr[(int)target_ship.shp_type];
271 if (mcp->m_flags & M_SUB) {
272 pr("Bad ship number!\n");
275 } /* not PINPOINTMISSILE for ships */
276 else if (!sarg_xy(cp, &sx, &sy)) {
277 pr("Not a sector!\n");
279 } else if (opt_PINPOINTMISSILE) {
280 if (pcp->pl_flags & P_MAR) {
281 pr("Missile designed to attack ships!\n");
285 /* end PINPOINTMISSILE */
286 if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
287 pr("Range too great; try again!\n");
290 if (msl_equip(pp) < 0) {
291 pr("%s not enough shells!\n", prplane(pp));
294 if (opt_PINPOINTMISSILE == 0 || !(pcp->pl_flags & P_MAR)) {
295 getsect(sx, sy, §);
297 natp = getnatp(player->cnum);
298 rel = getrel(natp, sect.sct_own);
299 if ((rel != AT_WAR) && (sect.sct_own != player->cnum) &&
300 (sect.sct_own) && (sect.sct_oldown != player->cnum)) {
301 pr("You are not at war with the player->owner of the target sector!\n");
304 pr("Missile monitoring officer destroys RV before detonation.\n");
308 if (!msl_hit(pp, SECT_HARDTARGET, EF_SECTOR, N_SCT_MISS,
309 N_SCT_SMISS, "sector", sx, sy, sect.sct_own)) {
311 dam = pln_damage(pp, sect.sct_x, sect.sct_y, 's', &nukedam, 0);
312 collateral_damage(sect.sct_x, sect.sct_y, dam, 0);
316 dam = pln_damage(pp, sect.sct_x, sect.sct_y, 's', &nukedam, 1);
318 pr("did %d damage in %s\n", PERCENT_DAMAGE(dam),
319 xyas(sx, sy, player->cnum));
320 if (sect.sct_own != 0) {
323 "Sub missile attack did %d damage in %s\n",
324 dam, xyas(sx, sy, sect.sct_own));
327 "%s missile attack did %d damage in %s\n",
328 cname(player->cnum), dam,
329 xyas(sx, sy, sect.sct_own));
331 sectdamage(§, dam, 0);
334 } /* end PINPOINTMISSILE conditional */
335 else if (opt_PINPOINTMISSILE) { /* else */
336 if (!msl_hit(pp, shp_hardtarget(&target_ship), EF_SHIP,
337 N_SHP_MISS, N_SHP_SMISS, prship(&target_ship),
338 target_ship.shp_x, target_ship.shp_y,
339 target_ship.shp_own)) {
342 dam = pln_damage(pp,target_ship.shp_x,target_ship.shp_y,'p',&nukedam, 0);
343 collateral_damage(target_ship.shp_x, target_ship.shp_y, dam, 0);
348 pln_damage(pp, target_ship.shp_x, target_ship.shp_y, 'p',
351 check_retreat_and_do_shipdamage(&target_ship, dam);
352 if (target_ship.shp_effic < SHIP_MINEFF)
353 pr("\t%s sunk!\n", prship(&target_ship));
354 putship(target_ship.shp_uid, &target_ship);
356 getship(target_ship.shp_uid, &target_ship);
357 if (!target_ship.shp_own)
358 pr("%s sunk!\n", prship(&target_ship));
360 /* end PINPOINTMISSILE */
365 * Launch a satellite.
366 * Return RET_OK if launched (even when satellite fails),
367 * else RET_SYN or RET_FAIL.
370 launch_sat(struct plnstr *pp, int sublaunch)
372 struct plchrstr *pcp = plchr + pp->pln_type;
382 cp = getstarg(player->argp[2], "Target sector? ", buf);
383 if (!check_plane_ok(pp))
387 if (!sarg_xy(cp, &sx, &sy)) {
388 pr("Bad sector designation!\n");
391 if ((dist = mapdist(pp->pln_x, pp->pln_y, sx, sy)) > pp->pln_range) {
392 pr("Range too great; try again!\n");
395 p = getstring("Geostationary orbit? ", buf);
398 if (!check_plane_ok(pp))
401 pp->pln_flags |= PLN_SYNCHRONOUS;
402 if (*p == 0 || *p == 'n')
403 pp->pln_flags &= ~(PLN_SYNCHRONOUS);
404 pr("3... 2... 1... Blastoff!!!\n");
405 if (chance(0.07 + (100 - pp->pln_effic) / 100.0)) {
406 pr("KABOOOOM! Range safety officer detonates booster!\n");
410 i = pp->pln_tech + pp->pln_effic;
411 if (chance(1.0 - (i / (i + 50.0)))) {
412 dir = (random() % 6) + 1;
413 sx += diroff[dir][0];
414 sy += diroff[dir][1];
415 pr("Your trajectory was a little off.\n");
417 nreport(player->cnum, N_LAUNCH, 0, 1);
418 pr("%s positioned over %s", prplane(pp), xyas(sx, sy, player->cnum));
419 if (msl_intercept(sx, sy, pp->pln_own, pcp->pl_def, sublaunch, P_O, 0)) {
424 pp->pln_flags |= PLN_LAUNCHED;
425 pp->pln_mobil = pp->pln_mobil > dist ? pp->pln_mobil - dist : 0;
426 putplane(pp->pln_uid, pp);
427 pr(", will be ready for use in %d time units\n",
428 plane_mob_max - pp->pln_mobil);