2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2007, 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
47 static int launch_as(struct plnstr *pp);
48 static int launch_missile(struct plnstr *pp, int sublaunch);
49 static int launch_sat(struct plnstr *pp, int sublaunch);
57 struct nstr_item nstr;
63 int rel, retval, gone;
66 if (!snxtitem(&nstr, EF_PLANE, player->argp[1]))
68 while (nxtitem(&nstr, &plane)) {
69 if (plane.pln_own != player->cnum)
71 pcp = &plchr[(int)plane.pln_type];
72 if ((pcp->pl_flags & (P_M | P_O)) == 0) {
73 pr("%s isn't a missile!\n", prplane(&plane));
76 if (pcp->pl_flags & P_F) {
77 pr("%s is a surface-to-air missile!\n", prplane(&plane));
80 if (pcp->pl_flags & P_N) {
81 pr("%s is an anti-ballistic-missile missile!\n",
85 if ((plane.pln_flags & PLN_LAUNCHED) && (pcp->pl_flags & P_O)) {
86 pr("%s already in orbit!\n", prplane(&plane));
90 if (ontradingblock(EF_PLANE, &plane)) {
91 pr("plane #%d inelligible - it's for sale.\n",
98 if (plane.pln_ship >= 0) {
99 getship(plane.pln_ship, &ship);
101 pr("%s: ship #%d was sunk!\n",
102 prplane(&plane), ship.shp_uid);
104 putplane(plane.pln_uid, &plane);
107 natp = getnatp(ship.shp_own);
108 rel = getrel(natp, player->cnum);
109 if (ship.shp_own != player->cnum && rel != ALLIED) {
110 pr("%s: you or an ally do not own ship #%d\n",
111 prplane(&plane), ship.shp_uid);
113 putplane(plane.pln_uid, &plane);
116 if (mchr[(int)ship.shp_type].m_flags & M_SUB)
120 getsect(plane.pln_x, plane.pln_y, §);
121 natp = getnatp(sect.sct_own);
122 rel = getrel(natp, player->cnum);
123 if (sect.sct_own && sect.sct_own != player->cnum
125 pr("%s: you or an ally do not own sector %s!\n",
126 prplane(&plane), xyas(plane.pln_x, plane.pln_y,
131 if (plane.pln_effic < 60) {
132 pr("%s is damaged (%d%%)\n", prplane(&plane), plane.pln_effic);
135 pr("%s at %s; range %d, eff %d%%\n", prplane(&plane),
136 xyas(plane.pln_x, plane.pln_y, player->cnum),
137 plane.pln_range, plane.pln_effic);
138 if (!(pcp->pl_flags & P_O)) {
139 retval = launch_missile(&plane, sublaunch);
141 } else if ((pcp->pl_flags & (P_M | P_O)) == (P_M | P_O)) {
142 retval = launch_as(&plane);
144 } else { /* satellites */
145 retval = launch_sat(&plane, sublaunch);
146 gone = !(plane.pln_flags & PLN_LAUNCHED);
148 if (retval != RET_OK)
152 putplane(plane.pln_uid, &plane);
159 * Launch anti-sat weapon PP.
160 * Return RET_OK if launched (even when missile explodes),
161 * else RET_SYN or RET_FAIL.
164 launch_as(struct plnstr *pp)
174 if (msl_equip(pp) < 0) {
175 pr("%s not enough petrol or shells!\n", prplane(pp));
178 cp = getstarg(player->argp[2], "Target sector? ", buf);
179 if (!check_plane_ok(pp))
183 if (!sarg_xy(cp, &sx, &sy)) {
184 pr("Bad sector designation!\n");
187 if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
188 pr("Range too great!\n");
192 snxtitem_dist(&ni, EF_PLANE, sx, sy, 0);
193 while (!goodtarget && nxtitem(&ni, &plane)) {
196 if (!(plane.pln_flags & PLN_LAUNCHED))
202 pr("No satellites there!\n");
205 if (msl_hit(pp, plane.pln_def, EF_PLANE, N_SAT_KILL, N_SAT_KILL,
206 prplane(&plane), sx, sy, plane.pln_own)) {
207 dam = pln_damage(pp, sx, sy, 'p', &nukedam, 1);
208 oldown = plane.pln_own;
209 planedamage(&plane, dam);
210 pr("Hit satellite for %d%% damage!\n", dam);
211 mpr(oldown, "%s anti-sat did %d%% damage to %s over %s\n",
212 cname(player->cnum), dam, prplane(&plane),
213 xyas(plane.pln_x, plane.pln_y, plane.pln_own));
214 putplane(plane.pln_uid, &plane);
216 mpr(oldown, "Satellite shot down\n");
223 * If SUBLAUNCH, it's sub-launched.
224 * Return RET_OK if launched (even when missile explodes),
225 * else RET_SYN or RET_FAIL.
228 launch_missile(struct plnstr *pp, int sublaunch)
230 struct plchrstr *pcp = plchr + pp->pln_type;
235 struct shpstr target_ship;
242 if (pcp->pl_flags & P_MAR)
243 cp = getstarg(player->argp[2], "Target ship? ", buf);
245 cp = getstarg(player->argp[2], "Target sector? ", buf);
248 if (!check_plane_ok(pp))
250 if (opt_PINPOINTMISSILE && sarg_type(cp) == NS_LIST) {
251 if (!(pcp->pl_flags & P_MAR)) {
252 pr("Missile not designed to attack ships!\n");
256 if ((n < 0) || !getship(n, &target_ship) ||
257 !target_ship.shp_own) {
258 pr("Bad ship number!\n");
261 sx = target_ship.shp_x;
262 sy = target_ship.shp_y;
263 mcp = &mchr[(int)target_ship.shp_type];
264 if (mcp->m_flags & M_SUB) {
265 pr("Bad ship number!\n");
268 } /* not PINPOINTMISSILE for ships */
269 else if (!sarg_xy(cp, &sx, &sy)) {
270 pr("Not a sector!\n");
272 } else if (opt_PINPOINTMISSILE) {
273 if (pcp->pl_flags & P_MAR) {
274 pr("Missile designed to attack ships!\n");
278 /* end PINPOINTMISSILE */
279 if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
280 pr("Range too great; try again!\n");
283 if (msl_equip(pp) < 0) {
284 pr("%s not enough shells!\n", prplane(pp));
287 if (opt_PINPOINTMISSILE == 0 || !(pcp->pl_flags & P_MAR)) {
288 getsect(sx, sy, §);
290 natp = getnatp(player->cnum);
291 rel = getrel(natp, sect.sct_own);
292 if ((rel != AT_WAR) && (sect.sct_own != player->cnum) &&
293 (sect.sct_own) && (sect.sct_oldown != player->cnum)) {
294 pr("You are not at war with the player->owner of the target sector!\n");
297 pr("Missile monitoring officer destroys RV before detonation.\n");
301 if (!msl_hit(pp, SECT_HARDTARGET, EF_SECTOR, N_SCT_MISS,
302 N_SCT_SMISS, "sector", sx, sy, sect.sct_own)) {
304 dam = pln_damage(pp, sect.sct_x, sect.sct_y, 's', &nukedam, 0);
305 collateral_damage(sect.sct_x, sect.sct_y, dam, 0);
309 dam = pln_damage(pp, sect.sct_x, sect.sct_y, 's', &nukedam, 1);
311 pr("did %d damage in %s\n", PERCENT_DAMAGE(dam),
312 xyas(sx, sy, player->cnum));
313 if (sect.sct_own != 0) {
316 "Sub missile attack did %d damage in %s\n",
317 dam, xyas(sx, sy, sect.sct_own));
320 "%s missile attack did %d damage in %s\n",
321 cname(player->cnum), dam,
322 xyas(sx, sy, sect.sct_own));
324 sectdamage(§, dam, 0);
327 } /* end PINPOINTMISSILE conditional */
328 else if (opt_PINPOINTMISSILE) { /* else */
329 if (!msl_hit(pp, shp_hardtarget(&target_ship), EF_SHIP,
330 N_SHP_MISS, N_SHP_SMISS, prship(&target_ship),
331 target_ship.shp_x, target_ship.shp_y,
332 target_ship.shp_own)) {
335 dam = pln_damage(pp,target_ship.shp_x,target_ship.shp_y,'p',&nukedam, 0);
336 collateral_damage(target_ship.shp_x, target_ship.shp_y, dam, 0);
341 pln_damage(pp, target_ship.shp_x, target_ship.shp_y, 'p',
344 check_retreat_and_do_shipdamage(&target_ship, dam);
345 if (target_ship.shp_effic < SHIP_MINEFF)
346 pr("\t%s sunk!\n", prship(&target_ship));
347 putship(target_ship.shp_uid, &target_ship);
349 getship(target_ship.shp_uid, &target_ship);
350 if (!target_ship.shp_own)
351 pr("%s sunk!\n", prship(&target_ship));
353 /* end PINPOINTMISSILE */
358 * Launch a satellite.
359 * Return RET_OK if launched (even when satellite fails),
360 * else RET_SYN or RET_FAIL.
363 launch_sat(struct plnstr *pp, int sublaunch)
365 struct plchrstr *pcp = plchr + pp->pln_type;
375 cp = getstarg(player->argp[2], "Target sector? ", buf);
376 if (!check_plane_ok(pp))
380 if (!sarg_xy(cp, &sx, &sy)) {
381 pr("Bad sector designation!\n");
384 if ((dist = mapdist(pp->pln_x, pp->pln_y, sx, sy)) > pp->pln_range) {
385 pr("Range too great; try again!\n");
388 p = getstring("Geostationary orbit? ", buf);
391 if (!check_plane_ok(pp))
394 pp->pln_flags |= PLN_SYNCHRONOUS;
395 if (*p == 0 || *p == 'n')
396 pp->pln_flags &= ~(PLN_SYNCHRONOUS);
397 pr("3... 2... 1... Blastoff!!!\n");
398 if (chance(0.07 + (100 - pp->pln_effic) / 100.0)) {
399 pr("KABOOOOM! Range safety officer detonates booster!\n");
403 i = pp->pln_tech + pp->pln_effic;
404 if (chance(1.0 - (i / (i + 50.0)))) {
405 dir = (random() % 6) + 1;
406 sx += diroff[dir][0];
407 sy += diroff[dir][1];
408 pr("Your trajectory was a little off.\n");
410 nreport(player->cnum, N_LAUNCH, 0, 1);
411 pr("%s positioned over %s", prplane(pp), xyas(sx, sy, player->cnum));
412 if (msl_intercept(sx, sy, pp->pln_own, pcp->pl_def, sublaunch, P_O, 0)) {
417 pp->pln_flags |= PLN_LAUNCHED;
418 pp->pln_mobil = pp->pln_mobil > dist ? pp->pln_mobil - dist : 0;
419 putplane(pp->pln_uid, pp);
420 pr(", will be ready for use in %d time units\n",
421 plane_mob_max - pp->pln_mobil);