2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2012, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
6 * Empire 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 3 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, see <http://www.gnu.org/licenses/>.
21 * See files README, COPYING and CREDITS in the root of the source
22 * tree for related information and legal notices. It is expected
23 * that future projects/authors will amend these files as needed.
27 * plnsub.c: Plane subroutine stuff
29 * Known contributors to this file:
32 * Steve McClure, 1998-2000
33 * Markus Armbruster, 2004-2012
50 #include "prototypes.h"
55 static int ship_can_carry(struct shpstr *, int, int, int, int);
56 static int inc_shp_nplane(struct plnstr *, int *, int *, int *);
59 * Get planes and escorts argument.
60 * Read planes into *NI_BOMB, and (optional) escorts into *NI_ESC.
61 * If INPUT_BOMB is not empty, use it, else prompt for more input.
63 * If we got a plane argument, initialize *NI_BOMB and *NI_ESC, and
65 * Else return -1 (*NI_BOMB and *NI_ESC may be modified).
68 get_planes(struct nstr_item *ni_bomb, struct nstr_item *ni_esc,
69 char *input_bomb, char *input_esc)
71 if (!snxtitem(ni_bomb, EF_PLANE, input_bomb, NULL))
73 if (!snxtitem(ni_esc, EF_PLANE, input_esc, "escort(s)? ")) {
76 pr("No escorts...\n");
82 * Get assembly point argument.
83 * If INPUT is not empty, use it, else prompt for more input using PROMPT.
84 * If this yields a valid assembly point, read it into *AP_SECT and
86 * Else complain and return NULL.
87 * *AP_SECT and BUF[1024] may be modified in either case.
90 get_assembly_point(char *input, struct sctstr *ap_sect, char *buf)
97 p = getstarg(input, "assembly point? ", buf);
100 if (!sarg_xy(p, &x, &y) || !getsect(x, y, ap_sect))
103 /* over own or allied sector is fine */
104 if (relations_with(ap_sect->sct_own, player->cnum) == ALLIED)
107 /* over own or allied ship is fine */
108 snxtitem_xy(&ni, EF_SHIP, x, y);
109 while (nxtitem(&ni, &ship)) {
110 if (ship.shp_effic < SHIP_MINEFF || ship.shp_own == 0)
112 if (relations_with(ship.shp_own, player->cnum) == ALLIED)
116 pr("Assembly point not owned by you or an ally!\n");
121 * Find out whether planes can fly one-way to X,Y.
122 * Offer the player any carriers there. If he chooses one, read it
123 * into TARGET->ship. Else read the target sector into TARGET->sect.
124 * If planes can land there, set required plane flags in *FLAGSP, and
125 * return 0. Else return -1.
128 pln_where_to_land(coord x, coord y,
129 union empobj_storage *target, int *flagsp)
138 nships = carriersatxy(x, y, player->cnum);
141 p = getstring("Carrier #? ", buf);
147 if (!getship(cno, &target->ship)
149 && (relations_with(target->ship.shp_own, player->cnum)
154 if (target->ship.shp_x != x || target->ship.shp_y != y) {
155 pr("Ship #%d not in %s\n", cno, xyas(x, y, player->cnum));
158 fl = carrier_planes(&target->ship, 0);
160 pr("Can't land on %s.\n", prship(&target->ship));
163 /* clear to land on ship#CNO */
164 pr("landing on carrier %d\n", cno);
170 /* try to land at sector */
171 getsect(x, y, &target->sect);
172 if (relations_with(target->sect.sct_own, player->cnum) != ALLIED) {
173 pr("Nowhere to land at sector %s!\n", xyas(x, y, player->cnum));
176 if (target->sect.sct_type == SCT_MOUNT) {
177 pr("Nowhere to land at sector %s!\n", xyas(x, y, player->cnum));
180 /* clear to land at sector */
181 if (target->sect.sct_type != SCT_AIRPT || target->sect.sct_effic < 60)
187 pln_can_land_on_carrier(struct emp_qelem *bomb_list,
188 struct emp_qelem *esc_list,
192 int n, nch, nxl, nmsl;
193 struct emp_qelem *list, *qp;
196 n = shp_nplane(sp, &nch, &nxl, &nmsl);
199 for (list = bomb_list;
201 list = list == bomb_list ? esc_list : NULL) {
202 for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
203 plp = (struct plist *)qp;
204 if (plp->plane.pln_ship == sp->shp_uid)
207 if (!inc_shp_nplane(&plp->plane, &nch, &nxl, &nmsl))
211 return ship_can_carry(sp, n, nch, nxl, nmsl);
215 pln_newlanding(struct emp_qelem *list, coord tx, coord ty, int cno)
217 struct emp_qelem *qp;
224 for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
225 plp = (struct plist *)qp;
227 if (!could_be_on_ship(&plp->plane, &ship))
228 pr("\t%s cannot land on ship #%d! %s aborts!\n",
229 prplane(&plp->plane), cno, prplane(&plp->plane));
230 else if (!put_plane_on_ship(&plp->plane, &ship))
231 pr("\tNo room on ship #%d! %s aborts!\n",
232 cno, prplane(&plp->plane));
234 if (plp->plane.pln_own != ship.shp_own) {
235 wu(0, ship.shp_own, "%s %s lands on your %s\n",
236 cname(player->cnum), prplane(&plp->plane),
241 plp->plane.pln_x = tx;
242 plp->plane.pln_y = ty;
243 getsect(tx, ty, §);
244 if (plp->plane.pln_own != sect.sct_own) {
246 "%s %s lands at your sector %s\n",
248 prplane(&plp->plane), xyas(tx, ty, sect.sct_own));
250 plp->plane.pln_ship = cno;
256 pln_dropoff(struct emp_qelem *list, struct ichrstr *ip, coord tx, coord ty,
259 struct emp_qelem *qp;
270 for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
271 plp = (struct plist *)qp;
275 getsect(tx, ty, §);
277 if (sect.sct_type == SCT_WATER)
278 pr("Your %s sink like a rock!\n", ip->i_name);
280 pr("Your %s vanish without a trace.\n", ip->i_name);
283 if (relations_with(sect.sct_own, player->cnum) != ALLIED) {
284 pr("You don't own %s! Cargo jettisoned...\n",
285 xyas(tx, ty, player->cnum));
288 if (ip->i_uid == I_CIVIL && sect.sct_own != sect.sct_oldown) {
289 pr("%s is occupied. Your civilians suffer from identity crisis and die.\n",
290 xyas(tx, ty, player->cnum));
293 there = sect.sct_item[ip->i_uid];
297 there = ship.shp_item[ip->i_uid];
298 max = mchr[ship.shp_type].m_item[ip->i_uid];
302 pr("%d excess %s discarded\n", there - max, ip->i_name);
306 pr("%d %s landed safely", amt, ip->i_name);
308 sect.sct_item[ip->i_uid] = there;
309 if (sect.sct_own != player->cnum)
310 wu(0, sect.sct_own, "%s planes drop %d %s in %s\n",
311 cname(player->cnum), amt, ip->i_name,
312 xyas(tx, ty, sect.sct_own));
313 pr(" at %s\n", xyas(tx, ty, player->cnum));
316 ship.shp_item[ip->i_uid] = there;
317 if (ship.shp_own != player->cnum)
318 wu(0, ship.shp_own, "%s planes land %d %s on carrier %d\n",
319 cname(player->cnum), amt, ip->i_name, ship.shp_uid);
320 pr(" on carrier #%d\n", ship.shp_uid);
321 putship(ship.shp_uid, &ship);
326 pln_mine(struct emp_qelem *list, coord tx, coord ty)
328 struct emp_qelem *qp;
334 for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
335 plp = (struct plist *)qp;
340 getsect(tx, ty, §);
341 if (sect.sct_type != SCT_WATER) {
342 pr("Your seamines have no effect here.\n");
345 sect.sct_mines = MIN(sect.sct_mines + amt, MINES_MAX);
346 pr("%d mines laid in %s.\n", amt, xyas(tx, ty, player->cnum));
347 if (map_set(player->cnum, tx, ty, 'X', 0))
348 writemap(player->cnum);
354 * Has PP's type capabilities satisfying WANTFLAGS and NOWANTFLAGS?
355 * A plane type is capable unless
356 * - it lacks all of the P_B, P_T in WANTFLAGS, or
357 * - it lacks all of the P_F, P_ESC in WANTFLAGS, or
358 * - it lacks all of the P_E, P_L, P_K in WANTFLAGS, or
359 * - it lacks any of the other capabilities in WANTFLAGS, or
360 * - it has any of the capabilities in NOWANTFLAGS.
363 pln_capable(struct plnstr *pp, int wantflags, int nowantflags)
365 int flags = plchr[(int)pp->pln_type].pl_flags;
367 if (wantflags & (P_B | P_T)) {
368 if ((flags & wantflags & (P_B | P_T)) == 0)
370 wantflags &= ~(P_B | P_T);
373 if (wantflags & (P_F | P_ESC)) {
374 if ((flags & wantflags & (P_F | P_ESC)) == 0)
376 wantflags &= ~(P_F | P_ESC);
379 if (wantflags & (P_E | P_L | P_K)) {
380 if ((flags & wantflags & (P_E | P_L | P_K)) == 0)
382 wantflags &= ~(P_E | P_L | P_K);
385 if ((flags & wantflags) != wantflags)
388 if (flags & nowantflags)
395 * Return union of capabilities of planes in LIST.
398 pln_caps(struct emp_qelem *list)
400 struct emp_qelem *qp;
405 for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
406 plp = (struct plist *)qp;
407 fl |= plp->pcp->pl_flags;
414 * Find plane types that can operate from carrier SP.
415 * If MSL find missile types, else non-missile types.
416 * Return a combination of P_L, P_K, P_E.
417 * It's zero if SP can't support air operations due to its type or
418 * state (low efficiency).
421 carrier_planes(struct shpstr *sp, int msl)
423 struct mchrstr *mcp = mchr + sp->shp_type;
426 if (sp->shp_effic < SHP_AIROPS_EFF)
430 if (mcp->m_flags & M_FLY)
432 if ((mcp->m_flags & M_MSL) && msl)
434 if (mcp->m_nchoppers && !msl)
442 pln_airbase_ok(struct plnstr *pp, int oneway, int noisy)
447 struct plchrstr *pcp = plchr + pp->pln_type;
449 if (CANT_HAPPEN(noisy && pp->pln_own != player->cnum))
452 if (pp->pln_ship >= 0) {
453 /* ship: needs to be own or allied, efficient */
454 if (!getship(pp->pln_ship, &ship)) {
458 if (relations_with(ship.shp_own, pp->pln_own) != ALLIED) {
460 pr("(note) An ally does not own the ship %s is on\n",
464 if (!(carrier_planes(&ship, pcp->pl_flags & P_M) & pcp->pl_flags))
467 } else if (pp->pln_land >= 0) {
468 /* land: needs to be own or allied, efficient, not embarked */
469 if (!getland(pp->pln_land, &land)) {
473 if (relations_with(land.lnd_own, pp->pln_own) != ALLIED) {
475 pr("(note) An ally does not own the unit %s is on\n",
479 if (land.lnd_effic < LND_AIROPS_EFF || !(pcp->pl_flags & P_E))
481 if (land.lnd_ship >= 0 || land.lnd_land >= 0)
485 /* sector: needs to be own or allied, efficient airfield */
486 if (!getsect(pp->pln_x, pp->pln_y, §)) {
491 if (relations_with(sect.sct_own, pp->pln_own) != ALLIED) {
493 pr("(note) An ally does not own the sector %s is in\n",
497 /* need airfield unless VTOL */
498 if ((pcp->pl_flags & P_V) == 0) {
499 if (sect.sct_type != SCT_AIRPT) {
501 pr("%s not at airport\n", prplane(pp));
504 if (sect.sct_effic < 40) {
506 pr("%s is not 40%% efficient, %s can't take off from there.\n",
507 xyas(sect.sct_x, sect.sct_y, player->cnum),
511 if (!oneway && sect.sct_effic < 60) {
513 pr("%s is not 60%% efficient, %s can't land there.\n",
514 xyas(sect.sct_x, sect.sct_y, player->cnum),
525 pln_sel(struct nstr_item *ni, struct emp_qelem *list, struct sctstr *ap,
526 int ap_to_target, int rangemult, int wantflags, int nowantflags)
530 struct plchrstr *pcp;
534 while (nxtitem(ni, &plane)) {
536 * It would be nice to let deities fly foreign planes, but
537 * much of the code assumes that only the plane's owner can
540 if (!plane.pln_own || plane.pln_own != player->cnum)
542 if (plane.pln_mobil <= 0)
544 if (plane.pln_effic < 40) {
545 pr("%s not efficient enough (must be 40%%)\n",
549 if (!pln_capable(&plane, wantflags, nowantflags))
552 if (ontradingblock(EF_PLANE, &plane)) {
553 pr("plane #%d inelligible - it's for sale.\n",
559 range = mapdist(plane.pln_x, plane.pln_y, ap->sct_x, ap->sct_y);
561 pr("%s too far from assembly point\n", prplane(&plane));
564 range += ap_to_target;
566 pcp = &plchr[(int)plane.pln_type];
567 if (plane.pln_range < range) {
568 pr("%s out of range (%d:%d)\n",
569 prplane(&plane), plane.pln_range, range);
572 if (!pln_airbase_ok(&plane, rangemult != 2, 1))
574 pr("%s standing by\n", prplane(&plane));
575 plane.pln_mission = 0;
576 putplane(plane.pln_uid, &plane);
577 plp = malloc(sizeof(struct plist));
581 emp_insque(&plp->queue, list);
586 pln_arm(struct emp_qelem *list, int dist, char mission, struct ichrstr *ip)
588 struct emp_qelem *qp;
589 struct emp_qelem *next;
593 for (qp = list->q_forw; qp != list; qp = next) {
595 plp = (struct plist *)qp;
597 getplane(pp->pln_uid, pp);
598 if ((pp->pln_flags & PLN_LAUNCHED)
599 || pln_equip(plp, ip, mission) < 0) {
604 pp->pln_flags |= PLN_LAUNCHED;
605 pp->pln_mobil -= pln_mobcost(dist, pp, mission);
606 putplane(pp->pln_uid, pp);
607 pr("%s equipped\n", prplane(pp));
612 pln_equip(struct plist *plp, struct ichrstr *ip, char mission)
614 struct plchrstr *pcp;
627 if (pp->pln_ship >= 0) {
628 getship(pp->pln_ship, &ship);
629 item = ship.shp_item;
631 } else if (pp->pln_land >= 0) {
632 getland(pp->pln_land, &land);
633 item = land.lnd_item;
636 getsect(pp->pln_x, pp->pln_y, §);
637 item = sect.sct_item;
638 own = sect.sct_oldown;
640 if (pcp->pl_fuel > item[I_PETROL]) {
641 pr("%s not enough petrol there!\n", prplane(pp));
644 item[I_PETROL] -= pcp->pl_fuel;
648 case 's': /* strategic bomb */
649 case 'p': /* pinpoint bomb */
652 case 't': /* transport */
653 if (!(pcp->pl_flags & P_C) || !ip)
659 if ((pcp->pl_flags & P_MINE) == 0)
665 if (!(pcp->pl_flags & P_C) || CANT_HAPPEN(!ip))
668 if (pcp->pl_flags & P_V)
671 case 'a': /* paradrop */
672 if (!(pcp->pl_flags & P_P))
675 if (pcp->pl_flags & P_V)
678 case 'r': /* reconnaissance */
679 case 'e': /* escort */
682 case 'i': /* missile interception */
683 if (CANT_HAPPEN(!(pcp->pl_flags & P_M)
684 || !(pcp->pl_flags & (P_N | P_O))))
694 if (itype != I_NONE) {
695 needed = load / ichr[itype].i_lbs;
697 pr("%s can't contribute to mission\n", prplane(pp));
700 if (nuk_on_plane(pp) >= 0) {
701 if (mission == 's' || mission == 't')
704 pr("%s can't fly this mission"
705 " while it is carrying a nuclear weapon",
710 if (itype == I_CIVIL && pp->pln_own != own) {
711 pr("You don't control those civilians!\n");
715 /* Supply is broken somewhere, so don't use it for now */
716 if (itype == I_SHELL && item[itype] < needed)
717 item[itype] += supply_commod(plp->plane.pln_own,
722 if (pp->pln_ship >= 0 || pp->pln_land >= 0)
725 abandon_needed = !!would_abandon(§, itype, needed, NULL);
726 if (item[itype] < needed + abandon_needed) {
727 pr("Not enough %s for %s\n", ichr[itype].i_name, prplane(pp));
730 item[itype] -= needed;
734 if (pp->pln_ship >= 0) {
735 if (pp->pln_own != ship.shp_own) {
737 "%s %s prepares for takeoff from ship %s\n",
738 cname(pp->pln_own), prplane(pp), prship(&ship));
740 putship(ship.shp_uid, &ship);
741 } else if (pp->pln_land >= 0) {
742 if (pp->pln_own != land.lnd_own) {
744 "%s %s prepares for takeoff from unit %s\n",
745 cname(pp->pln_own), prplane(pp), prland(&land));
747 putland(land.lnd_uid, &land);
749 if (pp->pln_own != sect.sct_own) {
750 wu(0, sect.sct_own, "%s %s prepares for takeoff from %s\n",
751 cname(pp->pln_own), prplane(pp),
752 xyas(sect.sct_x, sect.sct_y, sect.sct_own));
760 pln_put(struct emp_qelem *list)
762 struct emp_qelem *qp, *next;
764 for (qp = list->q_forw; qp != list; qp = next) {
766 pln_put1((struct plist *)qp);
771 pln_put1(struct plist *plp)
779 if (CANT_HAPPEN((pp->pln_flags & PLN_LAUNCHED)
780 && (plchr[pp->pln_type].pl_flags & P_M)
781 && pp->pln_effic >= PLANE_MINEFF))
782 pp->pln_effic = 0; /* bug: missile launched but not used up */
784 if (!(pp->pln_flags & PLN_LAUNCHED))
785 ; /* never took off */
786 else if (pp->pln_effic < PLANE_MINEFF) {
788 } else if (pp->pln_ship >= 0) {
789 /* It is landing on a carrier */
790 getship(pp->pln_ship, &ship);
791 /* We should do more, like make sure it's really
792 a carrier, etc. but for now just make sure it's
794 if (ship.shp_effic < SHIP_MINEFF) {
796 "Ship #%d has been sunk, plane #%d has nowhere to land, and\n"
797 "splashes into the sea.\n",
798 pp->pln_ship, pp->pln_uid);
802 /* Presume we are landing back in a sector. */
803 getsect(pp->pln_x, pp->pln_y, §);
804 if (sect.sct_type == SCT_WATER || sect.sct_type == SCT_WASTE) {
806 "Nowhere to land at %s, plane #%d crashes and burns...\n",
807 xyas(pp->pln_x, pp->pln_y, pp->pln_own), pp->pln_uid);
811 pp->pln_flags &= ~PLN_LAUNCHED;
812 putplane(pp->pln_uid, pp);
813 emp_remque(&plp->queue);
818 * Can a carrier of SP's type carry this load of planes?
819 * The load consists of N planes, of which NCH are choppers, NXL
820 * xlight, NMSL light missiles, and the rest are light fixed-wing
824 ship_can_carry(struct shpstr *sp, int n, int nch, int nxl, int nmsl)
826 struct mchrstr *mcp = &mchr[sp->shp_type];
827 int nfw = n - nch - nxl - nmsl;
829 if (nch > mcp->m_nchoppers) /* overflow into fixed-wing slots */
830 nfw += nch - mcp->m_nchoppers;
831 if (nxl > mcp->m_nxlight) /* overflow into missile slots */
832 nmsl += nxl - mcp->m_nxlight;
833 if (nmsl && !(mcp->m_flags & (M_MSL | M_FLY)))
834 return 0; /* missile slots wanted */
835 if (nfw && !(mcp->m_flags & M_FLY))
836 return 0; /* fixed-wing slots wanted */
837 return nfw + nmsl <= mcp->m_nplanes;
841 * Increment carrier plane counters for PP.
842 * If it's a chopper, increment *NCH.
843 * Else, if it's x-light, increment *NXL.
844 * Else, if it's a light missile, increment *MSL.
845 * Return non-zero if it's a chopper, x-light or light.
848 inc_shp_nplane(struct plnstr *pp, int *nch, int *nxl, int *nmsl)
850 struct plchrstr *pcp = &plchr[pp->pln_type];
852 if (pcp->pl_flags & P_K)
854 else if (pcp->pl_flags & P_E)
856 else if (!(pcp->pl_flags & P_L))
858 else if (pcp->pl_flags & P_M)
864 * Can PP be loaded on a ship of SP's type?
867 could_be_on_ship(struct plnstr *pp, struct shpstr *sp)
869 int nch = 0, nxl = 0, nmsl = 0;
871 if (!inc_shp_nplane(pp, &nch, &nxl, &nmsl))
873 return ship_can_carry(sp, 1, nch, nxl, nmsl);
877 put_plane_on_ship(struct plnstr *plane, struct shpstr *ship)
879 int n, nch, nxl, nmsl;
881 if (plane->pln_ship == ship->shp_uid)
882 return 1; /* Already on ship */
884 n = shp_nplane(ship, &nch, &nxl, &nmsl);
885 if (!inc_shp_nplane(plane, &nch, &nxl, &nmsl))
886 return 0; /* not a carrier plane */
887 if (!ship_can_carry(ship, n + 1, nch, nxl, nmsl))
888 return 0; /* no space */
890 plane->pln_x = ship->shp_x;
891 plane->pln_y = ship->shp_y;
892 plane->pln_ship = ship->shp_uid;
893 putplane(plane->pln_uid, plane);
898 put_plane_on_land(struct plnstr *plane, struct lndstr *land)
900 if (plane->pln_land == land->lnd_uid)
901 return 1; /* Already on unit */
902 if (!(plchr[plane->pln_type].pl_flags & P_E))
904 if (lnd_nxlight(land) >= lchr[land->lnd_type].l_nxlight)
907 plane->pln_x = land->lnd_x;
908 plane->pln_y = land->lnd_y;
909 plane->pln_land = land->lnd_uid;
910 putplane(plane->pln_uid, plane);
915 plane_sweep(struct emp_qelem *plane_list, coord x, coord y)
918 struct plchrstr *pcp;
919 struct emp_qelem *qp;
920 struct emp_qelem *next;
926 getsect(x, y, §);
927 mines_there = sect.sct_mines;
929 if (mines_there == 0)
932 if (sect.sct_type != SCT_WATER)
935 for (qp = plane_list->q_forw; ((qp != plane_list) && (mines_there));
938 ip = (struct plist *)qp;
941 if (!(pcp->pl_flags & P_SWEEP)) /* if it isn't an sweep plane */
944 if (chance((100.0 - pln_acc(pp)) / 100.0)) {
946 xyas(sect.sct_x, sect.sct_y, player->cnum));
952 if (found && map_set(player->cnum, sect.sct_x, sect.sct_y, 'X', 0))
953 writemap(player->cnum);
954 sect.sct_mines = mines_there;
959 pln_hitchance(struct plnstr *pp, int hardtarget, int type)
961 struct plchrstr *pcp = plchr + pp->pln_type;
962 double tfact = (double)(pp->pln_tech - pcp->pl_tech) /
963 (pp->pln_tech - pcp->pl_tech / 2);
964 int acc = pln_acc(pp);
967 if (type == EF_SHIP) {
968 if (pcp->pl_flags & P_A)
970 if (!(pcp->pl_flags & P_T))
973 hitchance = (int)(pp->pln_effic * (1.0 - 0.1 * tfact) *
974 (1.0 - acc / 100.0)) - hardtarget;
976 /* smooth out the bottom of the graph with asymtote at 5 -KHS */
978 hitchance = 5 + ldround(300.0 / (40.0 - hitchance), 1);
985 pln_damage(struct plnstr *pp, char type, int noisy)
987 struct plchrstr *pcp = plchr + pp->pln_type;
988 int load, i, hitroll, aim, len;
994 if (CANT_HAPPEN(nuk_on_plane(pp) >= 0))
998 if (!load) /* e.g. ab, blowing up on launch pad */
1005 if (pcp->pl_flags & P_M) {
1006 if (pcp->pl_flags & P_MAR)
1008 } else if (pcp->pl_flags & P_T)
1013 effective = !pinbomber;
1014 aim = 30 + (pinbomber ? aim : 100 - aim);
1016 effective = pinbomber;
1023 hitroll = roll(100);
1024 if (hitroll >= 90) {
1027 len += sprintf(buf + len, "BLAM");
1028 } else if (hitroll < aim) {
1031 len += sprintf(buf + len, "Blam");
1035 len += sprintf(buf + len, "blam");
1039 mpr(pp->pln_own, "%s\n", buf);
1043 len += sprintf(buf + len, "-");
1047 mpr(pp->pln_own, "%s\n", buf);
1054 pln_identchance(struct plnstr *pp, int hardtarget, int type)
1057 (100.0 - pln_hitchance(pp, hardtarget, type)) / 100.0;
1058 return (int)(100 - 100 * misschance * misschance);
1062 pln_mobcost(int dist, struct plnstr *pp, char mission)
1066 cost = 20.0 / (pp->pln_effic / 100.0);
1067 if (mission == 'e' || mission == 0)
1068 cost /= 2; /* escort or intercept */
1070 return ldround(cost * dist / pln_range_max(pp) + 5, 1);
1074 pln_is_in_orbit(struct plnstr *pp)
1076 return (plchr[pp->pln_type].pl_flags & (P_M | P_O)) == P_O
1077 && (pp->pln_flags & PLN_LAUNCHED);
1081 * Set PP's tech to TLEV along with everything else that depends on it.
1084 pln_set_tech(struct plnstr *pp, int tlev)
1086 struct plchrstr *pcp = plchr + pp->pln_type;
1087 int limited_range = pp->pln_range < pln_range_max(pp);
1090 if (CANT_HAPPEN(tlev < pcp->pl_tech))
1091 tlev = pcp->pl_tech;
1092 pp->pln_tech = tlev;
1094 range_max = pln_range_max(pp);
1095 if (!limited_range || pp->pln_range > range_max)
1096 pp->pln_range = range_max;