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;
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 (pln_is_in_orbit(&plane)) {
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);
114 if (mchr[(int)ship.shp_type].m_flags & M_SUB)
118 getsect(plane.pln_x, plane.pln_y, §);
119 natp = getnatp(sect.sct_own);
120 rel = getrel(natp, player->cnum);
121 if (sect.sct_own && sect.sct_own != player->cnum
123 pr("%s: you or an ally do not own sector %s!\n",
124 prplane(&plane), xyas(plane.pln_x, plane.pln_y,
129 if (plane.pln_effic < 60) {
130 pr("%s is damaged (%d%%)\n", prplane(&plane), plane.pln_effic);
133 pr("%s at %s; range %d, eff %d%%\n", prplane(&plane),
134 xyas(plane.pln_x, plane.pln_y, player->cnum),
135 plane.pln_range, plane.pln_effic);
136 if (!(pcp->pl_flags & P_O)) {
137 retval = launch_missile(&plane, sublaunch);
139 } else if ((pcp->pl_flags & (P_M | P_O)) == (P_M | P_O)) {
140 retval = launch_as(&plane);
142 } else { /* satellites */
143 retval = launch_sat(&plane, sublaunch);
144 gone = !(plane.pln_flags & PLN_LAUNCHED);
146 if (retval != RET_OK)
150 putplane(plane.pln_uid, &plane);
157 * Launch anti-sat weapon PP.
158 * Return RET_OK if launched (even when missile explodes),
159 * else RET_SYN or RET_FAIL.
162 launch_as(struct plnstr *pp)
172 cp = getstarg(player->argp[2], "Target sector? ", buf);
173 if (!check_plane_ok(pp))
177 if (!sarg_xy(cp, &sx, &sy)) {
178 pr("Bad sector designation!\n");
181 if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
182 pr("Range too great!\n");
186 snxtitem_dist(&ni, EF_PLANE, sx, sy, 0);
187 while (!goodtarget && nxtitem(&ni, &plane)) {
190 if (!pln_is_in_orbit(&plane))
196 pr("No satellites there!\n");
199 if (msl_equip(pp, 'p') < 0) {
200 pr("%s not enough petrol or shells!\n", prplane(pp));
203 if (msl_hit(pp, pln_def(&plane), EF_PLANE, N_SAT_KILL, N_SAT_KILL,
204 prplane(&plane), sx, sy, plane.pln_own)) {
205 dam = pln_damage(pp, sx, sy, 'p', &nukedam, 1);
206 oldown = plane.pln_own;
207 planedamage(&plane, dam);
208 pr("Hit satellite for %d%% damage!\n", dam);
209 mpr(oldown, "%s anti-sat did %d%% damage to %s over %s\n",
210 cname(player->cnum), dam, prplane(&plane),
211 xyas(plane.pln_x, plane.pln_y, plane.pln_own));
212 putplane(plane.pln_uid, &plane);
214 mpr(oldown, "Satellite shot down\n");
221 * If SUBLAUNCH, it's sub-launched.
222 * Return RET_OK if launched (even when missile explodes),
223 * else RET_SYN or RET_FAIL.
226 launch_missile(struct plnstr *pp, int sublaunch)
228 struct plchrstr *pcp = plchr + pp->pln_type;
233 struct shpstr target_ship;
240 if (pcp->pl_flags & P_MAR)
241 cp = getstarg(player->argp[2], "Target ship? ", buf);
243 cp = getstarg(player->argp[2], "Target sector? ", buf);
246 if (!check_plane_ok(pp))
248 if (opt_PINPOINTMISSILE && sarg_type(cp) == NS_LIST) {
249 if (!(pcp->pl_flags & P_MAR)) {
250 pr("Missile not designed to attack ships!\n");
254 if ((n < 0) || !getship(n, &target_ship) ||
255 !target_ship.shp_own) {
256 pr("Bad ship number!\n");
259 sx = target_ship.shp_x;
260 sy = target_ship.shp_y;
261 mcp = &mchr[(int)target_ship.shp_type];
262 if (mcp->m_flags & M_SUB) {
263 pr("Bad ship number!\n");
266 } /* not PINPOINTMISSILE for ships */
267 else if (!sarg_xy(cp, &sx, &sy)) {
268 pr("Not a sector!\n");
270 } else if (opt_PINPOINTMISSILE) {
271 if (pcp->pl_flags & P_MAR) {
272 pr("Missile designed to attack ships!\n");
276 /* end PINPOINTMISSILE */
277 if (mapdist(pp->pln_x, pp->pln_y, sx, sy) > pp->pln_range) {
278 pr("Range too great; try again!\n");
281 if (msl_equip(pp, 'p') < 0) {
282 pr("%s not enough shells!\n", prplane(pp));
285 if (opt_PINPOINTMISSILE == 0 || !(pcp->pl_flags & P_MAR)) {
286 getsect(sx, sy, §);
288 natp = getnatp(player->cnum);
289 rel = getrel(natp, sect.sct_own);
290 if ((rel != AT_WAR) && (sect.sct_own != player->cnum) &&
291 (sect.sct_own) && (sect.sct_oldown != player->cnum)) {
292 pr("You are not at war with the player->owner of the target sector!\n");
295 pr("Missile monitoring officer destroys RV before detonation.\n");
299 if (!msl_hit(pp, SECT_HARDTARGET, EF_SECTOR, N_SCT_MISS,
300 N_SCT_SMISS, "sector", sx, sy, sect.sct_own)) {
302 dam = pln_damage(pp, sect.sct_x, sect.sct_y, 's', &nukedam, 0);
303 collateral_damage(sect.sct_x, sect.sct_y, dam, 0);
307 dam = pln_damage(pp, sect.sct_x, sect.sct_y, 's', &nukedam, 1);
309 pr("did %d damage in %s\n", PERCENT_DAMAGE(dam),
310 xyas(sx, sy, player->cnum));
311 if (sect.sct_own != 0) {
314 "Sub missile attack did %d damage in %s\n",
315 dam, xyas(sx, sy, sect.sct_own));
318 "%s missile attack did %d damage in %s\n",
319 cname(player->cnum), dam,
320 xyas(sx, sy, sect.sct_own));
322 sectdamage(§, dam);
325 } /* end PINPOINTMISSILE conditional */
326 else if (opt_PINPOINTMISSILE) { /* else */
327 if (!msl_hit(pp, shp_hardtarget(&target_ship), EF_SHIP,
328 N_SHP_MISS, N_SHP_SMISS, prship(&target_ship),
329 target_ship.shp_x, target_ship.shp_y,
330 target_ship.shp_own)) {
333 dam = pln_damage(pp,target_ship.shp_x,target_ship.shp_y,'p',&nukedam, 0);
334 collateral_damage(target_ship.shp_x, target_ship.shp_y, dam, 0);
339 pln_damage(pp, target_ship.shp_x, target_ship.shp_y, 'p',
342 check_retreat_and_do_shipdamage(&target_ship, dam);
343 if (target_ship.shp_effic < SHIP_MINEFF)
344 pr("\t%s sunk!\n", prship(&target_ship));
345 putship(target_ship.shp_uid, &target_ship);
347 getship(target_ship.shp_uid, &target_ship);
348 if (!target_ship.shp_own)
349 pr("%s sunk!\n", prship(&target_ship));
351 /* end PINPOINTMISSILE */
356 * Launch a satellite.
357 * Return RET_OK if launched (even when satellite fails),
358 * else RET_SYN or RET_FAIL.
361 launch_sat(struct plnstr *pp, int sublaunch)
363 struct plchrstr *pcp = plchr + pp->pln_type;
373 cp = getstarg(player->argp[2], "Target sector? ", buf);
374 if (!check_plane_ok(pp))
378 if (!sarg_xy(cp, &sx, &sy)) {
379 pr("Bad sector designation!\n");
382 if ((dist = mapdist(pp->pln_x, pp->pln_y, sx, sy)) > pp->pln_range) {
383 pr("Range too great; try again!\n");
386 p = getstring("Geostationary orbit? ", buf);
389 if (!check_plane_ok(pp))
391 if (msl_equip(pp, 'r') < 0) {
392 pr("%s not enough petrol!\n", prplane(pp));
396 pp->pln_flags |= PLN_SYNCHRONOUS;
397 if (*p == 0 || *p == 'n')
398 pp->pln_flags &= ~(PLN_SYNCHRONOUS);
399 pr("3... 2... 1... Blastoff!!!\n");
400 if (chance(0.07 + (100 - pp->pln_effic) / 100.0)) {
401 pr("KABOOOOM! Range safety officer detonates booster!\n");
405 i = pp->pln_tech + pp->pln_effic;
406 if (chance(1.0 - (i / (i + 50.0)))) {
407 dir = (random() % 6) + 1;
408 sx += diroff[dir][0];
409 sy += diroff[dir][1];
410 pr("Your trajectory was a little off.\n");
412 nreport(player->cnum, N_LAUNCH, 0, 1);
413 pr("%s positioned over %s", prplane(pp), xyas(sx, sy, player->cnum));
414 if (msl_intercept(sx, sy, pp->pln_own, pcp->pl_def, sublaunch, P_O, 0)) {
419 CANT_HAPPEN(pp->pln_flags & PLN_LAUNCHED);
420 pp->pln_flags |= PLN_LAUNCHED;
421 pp->pln_mobil = pp->pln_mobil > dist ? pp->pln_mobil - dist : 0;
422 putplane(pp->pln_uid, pp);
423 pr(", will be ready for use in %d time units\n",
424 plane_mob_max - pp->pln_mobil);