2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2008, 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;
64 if (!snxtitem(&nstr, EF_PLANE, player->argp[1]))
66 while (nxtitem(&nstr, &plane)) {
67 if (plane.pln_own != player->cnum)
69 pcp = &plchr[(int)plane.pln_type];
70 if ((pcp->pl_flags & (P_M | P_O)) == 0) {
71 pr("%s isn't a missile!\n", prplane(&plane));
74 if (pcp->pl_flags & P_F) {
75 pr("%s is a surface-to-air missile!\n", prplane(&plane));
78 if (pcp->pl_flags & P_N) {
79 pr("%s is an anti-ballistic-missile missile!\n",
83 if (pln_is_in_orbit(&plane)) {
84 pr("%s already in orbit!\n", prplane(&plane));
88 if (ontradingblock(EF_PLANE, &plane)) {
89 pr("plane #%d inelligible - it's for sale.\n",
95 if (plane.pln_effic < 60) {
96 pr("%s is damaged (%d%%)\n", prplane(&plane), plane.pln_effic);
99 if (!pln_airbase_ok(&plane, 1, 1))
102 if (plane.pln_ship >= 0) {
103 getship(plane.pln_ship, &ship);
104 if (mchr[(int)ship.shp_type].m_flags & M_SUB)
107 pr("%s at %s; range %d, eff %d%%\n", prplane(&plane),
108 xyas(plane.pln_x, plane.pln_y, player->cnum),
109 plane.pln_range, plane.pln_effic);
110 if (!(pcp->pl_flags & P_O)) {
111 retval = launch_missile(&plane, sublaunch);
113 } else if ((pcp->pl_flags & (P_M | P_O)) == (P_M | P_O)) {
114 retval = launch_as(&plane);
116 } else { /* satellites */
117 retval = launch_sat(&plane, sublaunch);
118 gone = !(plane.pln_flags & PLN_LAUNCHED);
120 if (retval != RET_OK)
124 putplane(plane.pln_uid, &plane);
131 * Launch anti-sat weapon PP.
132 * Return RET_OK if launched (even when missile explodes),
133 * else RET_SYN or RET_FAIL.
136 launch_as(struct plnstr *pp)
146 cp = getstarg(player->argp[2], "Target sector? ", buf);
147 if (!check_plane_ok(pp))
151 if (!sarg_xy(cp, &sx, &sy)) {
152 pr("Bad sector designation!\n");
155 if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
156 pr("Range too great!\n");
160 snxtitem_dist(&ni, EF_PLANE, sx, sy, 0);
161 while (!goodtarget && nxtitem(&ni, &plane)) {
164 if (!pln_is_in_orbit(&plane))
170 pr("No satellites there!\n");
173 if (msl_equip(pp, 'p') < 0) {
174 pr("%s not enough petrol or shells!\n", prplane(pp));
177 if (msl_hit(pp, pln_def(&plane), EF_PLANE, N_SAT_KILL, N_SAT_KILL,
178 prplane(&plane), sx, sy, plane.pln_own)) {
179 dam = pln_damage(pp, sx, sy, 'p', &nukedam, 1);
180 if (CANT_HAPPEN(nukedam))
182 oldown = plane.pln_own;
183 planedamage(&plane, dam);
184 pr("Hit satellite for %d%% damage!\n", dam);
185 mpr(oldown, "%s anti-sat did %d%% damage to %s over %s\n",
186 cname(player->cnum), dam, prplane(&plane),
187 xyas(plane.pln_x, plane.pln_y, plane.pln_own));
188 putplane(plane.pln_uid, &plane);
190 mpr(oldown, "Satellite shot down\n");
197 * If SUBLAUNCH, it's sub-launched.
198 * Return RET_OK if launched (even when missile explodes),
199 * else RET_SYN or RET_FAIL.
202 launch_missile(struct plnstr *pp, int sublaunch)
204 struct plchrstr *pcp = plchr + pp->pln_type;
209 struct shpstr target_ship;
216 if (pcp->pl_flags & P_MAR)
217 cp = getstarg(player->argp[2], "Target ship? ", buf);
219 cp = getstarg(player->argp[2], "Target sector? ", buf);
222 if (!check_plane_ok(pp))
224 if (opt_PINPOINTMISSILE && sarg_type(cp) == NS_LIST) {
225 if (!(pcp->pl_flags & P_MAR)) {
226 pr("Missile not designed to attack ships!\n");
230 if ((n < 0) || !getship(n, &target_ship) ||
231 !target_ship.shp_own) {
232 pr("Bad ship number!\n");
235 sx = target_ship.shp_x;
236 sy = target_ship.shp_y;
237 mcp = &mchr[(int)target_ship.shp_type];
238 if (mcp->m_flags & M_SUB) {
239 pr("Bad ship number!\n");
242 } /* not PINPOINTMISSILE for ships */
243 else if (!sarg_xy(cp, &sx, &sy)) {
244 pr("Not a sector!\n");
246 } else if (opt_PINPOINTMISSILE) {
247 if (pcp->pl_flags & P_MAR) {
248 pr("Missile designed to attack ships!\n");
252 /* end PINPOINTMISSILE */
253 if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
254 pr("Range too great; try again!\n");
257 if (msl_equip(pp, 'p') < 0) {
258 pr("%s not enough shells!\n", prplane(pp));
261 if (opt_PINPOINTMISSILE == 0 || !(pcp->pl_flags & P_MAR)) {
262 getsect(sx, sy, §);
264 natp = getnatp(player->cnum);
265 rel = getrel(natp, sect.sct_own);
266 if ((rel != AT_WAR) && (sect.sct_own != player->cnum) &&
267 (sect.sct_own) && (sect.sct_oldown != player->cnum)) {
268 pr("You are not at war with the player->owner of the target sector!\n");
271 pr("Missile monitoring officer destroys RV before detonation.\n");
275 if (!msl_hit(pp, SECT_HARDTARGET, EF_SECTOR, N_SCT_MISS,
276 N_SCT_SMISS, "sector", sx, sy, sect.sct_own)) {
278 dam = pln_damage(pp, sect.sct_x, sect.sct_y, 's', &nukedam, 0);
279 collateral_damage(sect.sct_x, sect.sct_y, dam, 0);
283 dam = pln_damage(pp, sect.sct_x, sect.sct_y, 's', &nukedam, 1);
285 pr("did %d damage in %s\n", PERCENT_DAMAGE(dam),
286 xyas(sx, sy, player->cnum));
287 if (sect.sct_own != 0) {
290 "Sub missile attack did %d damage in %s\n",
291 dam, xyas(sx, sy, sect.sct_own));
294 "%s missile attack did %d damage in %s\n",
295 cname(player->cnum), dam,
296 xyas(sx, sy, sect.sct_own));
298 sectdamage(§, dam);
301 } /* end PINPOINTMISSILE conditional */
302 else if (opt_PINPOINTMISSILE) { /* else */
303 if (!msl_hit(pp, shp_hardtarget(&target_ship), EF_SHIP,
304 N_SHP_MISS, N_SHP_SMISS, prship(&target_ship),
305 target_ship.shp_x, target_ship.shp_y,
306 target_ship.shp_own)) {
309 dam = pln_damage(pp,target_ship.shp_x,target_ship.shp_y,'p',&nukedam, 0);
310 collateral_damage(target_ship.shp_x, target_ship.shp_y, dam, 0);
315 pln_damage(pp, target_ship.shp_x, target_ship.shp_y, 'p',
318 check_retreat_and_do_shipdamage(&target_ship, dam);
319 if (target_ship.shp_effic < SHIP_MINEFF)
320 pr("\t%s sunk!\n", prship(&target_ship));
321 putship(target_ship.shp_uid, &target_ship);
323 getship(target_ship.shp_uid, &target_ship);
324 if (!target_ship.shp_own)
325 pr("%s sunk!\n", prship(&target_ship));
327 /* end PINPOINTMISSILE */
332 * Launch a satellite.
333 * Return RET_OK if launched (even when satellite fails),
334 * else RET_SYN or RET_FAIL.
337 launch_sat(struct plnstr *pp, int sublaunch)
339 struct plchrstr *pcp = plchr + pp->pln_type;
349 cp = getstarg(player->argp[2], "Target sector? ", buf);
350 if (!check_plane_ok(pp))
354 if (!sarg_xy(cp, &sx, &sy)) {
355 pr("Bad sector designation!\n");
358 if ((dist = mapdist(pp->pln_x, pp->pln_y, sx, sy)) > pp->pln_range) {
359 pr("Range too great; try again!\n");
362 p = getstring("Geostationary orbit? ", buf);
365 if (!check_plane_ok(pp))
367 if (msl_equip(pp, 'r') < 0) {
368 pr("%s not enough petrol!\n", prplane(pp));
372 pp->pln_flags |= PLN_SYNCHRONOUS;
373 if (*p == 0 || *p == 'n')
374 pp->pln_flags &= ~(PLN_SYNCHRONOUS);
375 pr("3... 2... 1... Blastoff!!!\n");
376 if (chance(0.07 + (100 - pp->pln_effic) / 100.0)) {
377 pr("KABOOOOM! Range safety officer detonates booster!\n");
381 i = pp->pln_tech + pp->pln_effic;
382 if (chance(1.0 - (i / (i + 50.0)))) {
383 dir = (random() % 6) + 1;
384 sx += diroff[dir][0];
385 sy += diroff[dir][1];
386 pr("Your trajectory was a little off.\n");
388 nreport(player->cnum, N_LAUNCH, 0, 1);
389 pr("%s positioned over %s", prplane(pp), xyas(sx, sy, player->cnum));
390 if (msl_intercept(sx, sy, pp->pln_own, pcp->pl_def, sublaunch, P_O, 0)) {
395 CANT_HAPPEN(pp->pln_flags & PLN_LAUNCHED);
396 pp->pln_flags |= PLN_LAUNCHED;
397 pp->pln_mobil = pp->pln_mobil > dist ? pp->pln_mobil - dist : 0;
398 putplane(pp->pln_uid, pp);
399 pr(", will be ready for use in %d time units\n",
400 plane_mob_max - pp->pln_mobil);