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, (int *)&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);
110 makelost(EF_PLANE, plane.pln_own, plane.pln_uid,
111 plane.pln_x, plane.pln_y);
113 putplane(plane.pln_uid, &plane);
116 natp = getnatp(ship.shp_own);
117 rel = getrel(natp, player->cnum);
118 if (ship.shp_own != player->cnum && rel != ALLIED) {
119 pr("%s: you or an ally do not own ship #%d\n",
120 prplane(&plane), ship.shp_uid);
121 makelost(EF_PLANE, plane.pln_own, plane.pln_uid,
122 plane.pln_x, plane.pln_y);
124 putplane(plane.pln_uid, &plane);
127 if (mchr[(int)ship.shp_type].m_flags & M_SUB)
131 getsect(plane.pln_x, plane.pln_y, §);
132 natp = getnatp(sect.sct_own);
133 rel = getrel(natp, player->cnum);
134 if (sect.sct_own && sect.sct_own != player->cnum
136 pr("%s: you or an ally do not own sector %s!\n",
137 prplane(&plane), xyas(plane.pln_x, plane.pln_y,
142 if (plane.pln_effic < 60) {
143 pr("%s is damaged (%d%%)\n", prplane(&plane), plane.pln_effic);
146 pr("%s at %s; range %d, eff %d%%\n", prplane(&plane),
147 xyas(plane.pln_x, plane.pln_y, player->cnum),
148 plane.pln_range, plane.pln_effic);
149 if (!(pcp->pl_flags & P_O)) {
150 retval = launch_missile(&plane, sublaunch);
152 } else if ((pcp->pl_flags & (P_M | P_O)) == (P_M | P_O)) {
153 retval = launch_as(&plane);
155 } else { /* satellites */
156 retval = launch_sat(&plane, sublaunch);
157 gone = !(plane.pln_flags & PLN_LAUNCHED);
159 if (retval != RET_OK)
162 makelost(EF_PLANE, plane.pln_own, plane.pln_uid, plane.pln_x,
165 putplane(plane.pln_uid, &plane);
172 * Launch anti-sat weapon PP.
173 * Return RET_OK if launched (even when missile explodes),
174 * else RET_SYN or RET_FAIL.
177 launch_as(struct plnstr *pp)
180 s_char *cp, buf[1024];
187 if (msl_equip(pp) < 0) {
188 pr("%s not enough petrol or shells!\n", prplane(pp));
191 cp = getstarg(player->argp[2], "Target sector? ", buf);
192 if (!check_plane_ok(pp))
196 if (!sarg_xy(cp, &sx, &sy)) {
197 pr("Bad sector designation!\n");
200 if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
201 pr("Range too great!\n");
205 snxtitem_dist(&ni, EF_PLANE, sx, sy, 0);
206 while (!goodtarget && nxtitem(&ni, &plane)) {
209 if (!(plane.pln_flags & PLN_LAUNCHED))
215 pr("No satellites there!\n");
218 if (msl_hit(pp, plane.pln_def, EF_PLANE, N_SAT_KILL, N_SAT_KILL,
219 prplane(&plane), sx, sy, plane.pln_own)) {
220 dam = pln_damage(pp, sx, sy, 'p', &nukedam, 1);
221 oldown = plane.pln_own;
222 planedamage(&plane, dam);
223 pr("Hit satellite for %d%% damage!\n", dam);
225 "%s anti-sat did %d%% damage to %s over %s\n",
226 cname(player->cnum), dam, prplane(&plane),
227 xyas(plane.pln_x, plane.pln_y, plane.pln_own));
228 putplane(plane.pln_uid, &plane);
230 mpr(oldown, "Satellite shot down\n");
237 * If SUBLAUNCH, it's sub-launched.
238 * Return RET_OK if launched (even when missile explodes),
239 * else RET_SYN or RET_FAIL.
242 launch_missile(struct plnstr *pp, int sublaunch)
244 struct plchrstr *pcp = plchr + pp->pln_type;
249 struct shpstr target_ship;
256 if (pcp->pl_flags & P_MAR)
257 cp = getstarg(player->argp[2], "Target ship? ", buf);
259 cp = getstarg(player->argp[2], "Target sector? ", buf);
262 if (!check_plane_ok(pp))
264 if (opt_PINPOINTMISSILE && sarg_type(cp) == NS_LIST) {
265 if (!(pcp->pl_flags & P_MAR)) {
266 pr("Missile not designed to attack ships!\n");
270 if ((n < 0) || !getship(n, &target_ship) ||
271 !target_ship.shp_own) {
272 pr("Bad ship number!\n");
275 sx = target_ship.shp_x;
276 sy = target_ship.shp_y;
277 mcp = &mchr[(int)target_ship.shp_type];
278 if (mcp->m_flags & M_SUB) {
279 pr("Bad ship number!\n");
282 } /* not PINPOINTMISSILE for ships */
283 else if (!sarg_xy(cp, &sx, &sy)) {
284 pr("Not a sector!\n");
286 } else if (opt_PINPOINTMISSILE) {
287 if (pcp->pl_flags & P_MAR) {
288 pr("Missile designed to attack ships!\n");
292 /* end PINPOINTMISSILE */
293 if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
294 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 RET_OK if launched (even when satellite fails),
374 * else RET_SYN or RET_FAIL.
377 launch_sat(struct plnstr *pp, int sublaunch)
379 struct plchrstr *pcp = plchr + pp->pln_type;
389 cp = getstarg(player->argp[2], "Target sector? ", buf);
390 if (!check_plane_ok(pp))
394 if (!sarg_xy(cp, &sx, &sy)) {
395 pr("Bad sector designation!\n");
398 if ((dist = mapdist(pp->pln_x, pp->pln_y, sx, sy)) > pp->pln_range) {
399 pr("Range too great; try again!\n");
402 p = getstring("Geostationary orbit? ", buf);
405 if (!check_plane_ok(pp))
408 pp->pln_flags |= PLN_SYNCHRONOUS;
409 if (*p == 0 || *p == 'n')
410 pp->pln_flags &= ~(PLN_SYNCHRONOUS);
411 pr("3... 2... 1... Blastoff!!!\n");
412 if (chance(0.07 + (100 - pp->pln_effic) / 100.0)) {
413 pr("KABOOOOM! Range safety officer detonates booster!\n");
414 makelost(EF_PLANE, pp->pln_own, pp->pln_uid, pp->pln_x, pp->pln_y);
418 i = pp->pln_tech + pp->pln_effic;
419 if (chance(1.0 - (i / (i + 50.0)))) {
420 dir = (random() % 6) + 1;
421 sx += diroff[dir][0];
422 sy += diroff[dir][1];
423 pr("Your trajectory was a little off.\n");
425 nreport(player->cnum, N_LAUNCH, 0, 1);
426 pr("%s positioned over %s", prplane(pp), xyas(sx, sy, player->cnum));
427 if (msl_intercept(sx, sy, pp->pln_own, pcp->pl_def, sublaunch, P_O, 0)) {
432 pp->pln_flags |= PLN_LAUNCHED;
433 pp->pln_mobil = (pp->pln_mobil > dist) ? (pp->pln_mobil - dist) : 0;
434 putplane(pp->pln_uid, pp);
435 pr(", will be ready for use in %d time units\n", plane_mob_max - pp->pln_mobil);