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 * mission.c: Mission subroutines for planes/ships/units
30 * Known contributors to this file:
32 * Steve McClure, 1996-2000
47 #include "prototypes.h"
52 struct emp_qelem queue; /* list of units */
53 void *cp; /* pointer to desc of thing */
54 struct empobj *thing; /* thing's struct */
58 struct emp_qelem queue;
63 static void add_airport(struct emp_qelem *, coord, coord);
64 static int air_damage(struct emp_qelem *, coord, coord, int, natid,
66 static void build_mission_list(struct genlist *, coord, coord, int, natid);
67 static void build_mission_list_type(struct genlist *, coord, coord, int,
69 static void divide(struct emp_qelem *, struct emp_qelem *, coord, coord);
70 static int dosupport(struct genlist *, coord, coord, natid, natid);
71 static int find_airport(struct emp_qelem *, coord, coord);
72 static int mission_pln_arm(struct emp_qelem *, coord, coord, int,
73 int, struct ichrstr *, int, int);
74 static void mission_pln_sel(struct emp_qelem *, int, int, int);
75 static int perform_mission(coord, coord, natid, struct emp_qelem *, int,
79 * Interdict commodities & transported planes
82 ground_interdict(coord x, coord y, natid victim, char *s)
85 int dam = 0, newdam, rel;
86 struct genlist mi[MAXNOC];
89 memset(mi, 0, sizeof(mi));
90 for (z = 1; z < MAXNOC; z++)
91 emp_initque((struct emp_qelem *)&mi[z]);
93 build_mission_list(mi, x, y, MI_INTERDICT, victim);
95 for (cn = 1; cn < MAXNOC; cn++) {
96 rel = getrel(getnatp(cn), victim);
100 if (QEMPTY(&mi[cn].queue))
103 newdam = perform_mission(x, y, victim, &mi[cn].queue,
104 MI_INTERDICT, s, SECT_HARDTARGET);
107 mpr(victim, "%s interdiction mission does %d damage!\n",
111 collateral_damage(x, y, dam);
117 collateral_damage(coord x, coord y, int dam)
125 getsect(x, y, §);
127 coll = ldround((double)dam * collateral_dam, 1);
130 mpr(sect.sct_own, "%s takes %d%% collateral damage\n",
131 xyas(x, y, sect.sct_own), coll);
132 sectdamage(§, coll);
140 only_subs(struct emp_qelem *list)
142 struct emp_qelem *qp;
146 for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
147 glp = (struct genlist *)qp;
149 if (glp->thing->ef_type != EF_SHIP)
152 if (!(mcp->m_flags & M_SUB))
156 /* They were all subs! */
162 * Interdict ships & land units
165 unit_interdict(coord x, coord y, natid victim, char *s, int hardtarget,
170 struct genlist mi[MAXNOC];
174 memset(mi, 0, sizeof(mi));
175 for (z = 1; z < MAXNOC; z++)
176 emp_initque((struct emp_qelem *)&mi[z]);
178 build_mission_list(mi, x, y, mission, victim);
180 for (cn = 1; cn < MAXNOC; cn++) {
183 if (mission == MI_SINTERDICT) {
184 if (getrel(getnatp(cn), victim) >= FRIENDLY)
186 } else if (getrel(getnatp(cn), victim) > HOSTILE)
189 if (QEMPTY(&mi[cn].queue))
192 osubs = only_subs(&mi[cn].queue);
193 newdam = perform_mission(x, y, victim, &mi[cn].queue,
194 mission, s, hardtarget);
197 /* If only subs responded, then we don't know who's
199 mpr(victim, "%s interdiction mission does %d damage!\n",
200 osubs ? "Enemy" : cname(cn), newdam);
204 collateral_damage(x, y, dam);
210 * Perform a mission against victim, on behalf of actee
213 off_support(coord x, coord y, natid victim, natid actee)
216 struct genlist mi[MAXNOC];
219 memset(mi, 0, sizeof(mi));
220 for (z = 1; z < MAXNOC; z++)
221 emp_initque((struct emp_qelem *)&mi[z]);
223 build_mission_list(mi, x, y, MI_SUPPORT, victim);
224 build_mission_list(mi, x, y, MI_OSUPPORT, victim);
226 dam = dosupport(mi, x, y, victim, actee);
231 * Perform a mission against victim, on behalf of actee
234 def_support(coord x, coord y, natid victim, natid actee)
237 struct genlist mi[MAXNOC];
240 memset(mi, 0, sizeof(mi));
241 for (z = 1; z < MAXNOC; z++)
242 emp_initque((struct emp_qelem *)&mi[z]);
244 build_mission_list(mi, x, y, MI_SUPPORT, victim);
245 build_mission_list(mi, x, y, MI_DSUPPORT, victim);
247 dam = dosupport(mi, x, y, victim, actee);
252 dosupport(struct genlist *mi, coord x, coord y, natid victim, natid actee)
258 for (cn = 1; cn < MAXNOC; cn++) {
259 rel = getrel(getnatp(cn), actee);
260 if ((cn != actee) && (rel != ALLIED))
262 rel = getrel(getnatp(cn), victim);
263 if ((cn != actee) && (rel != AT_WAR))
266 if (QEMPTY(&mi[cn].queue))
269 dam += perform_mission(x, y, victim, &mi[cn].queue, MI_SUPPORT,
270 "", SECT_HARDTARGET);
276 build_mission_list(struct genlist *mi, coord x, coord y, int mission,
279 build_mission_list_type(mi, x, y, mission, EF_LAND, victim);
280 build_mission_list_type(mi, x, y, mission, EF_SHIP, victim);
281 build_mission_list_type(mi, x, y, mission, EF_PLANE, victim);
285 build_mission_list_type(struct genlist *mi, coord x, coord y, int mission,
286 int type, natid victim)
291 union empobj_storage item;
297 snxtitem_all(&ni, type);
298 while (nxtitem(&ni, &item)) {
299 gp = (struct empobj *)&item;
307 if ((gp->mission != mission) && (mission != MI_SINTERDICT))
310 if ((gp->mission != mission) && (mission == MI_SINTERDICT) &&
311 (gp->mission != MI_INTERDICT))
314 relat = getrel(getnatp(gp->own), victim);
315 if (mission == MI_SINTERDICT) {
316 if (relat >= FRIENDLY)
318 else if (type != EF_PLANE && relat > HOSTILE)
320 } else if (relat > HOSTILE)
323 dist = mapdist(x, y, gp->opx, gp->opy);
326 if (mission != MI_RESERVE) /* XXX */
327 oprange(gp, &radius);
332 /* Ok, it is within the operations range. */
333 /* Now check from where the object actually is */
334 dist = mapdist(x, y, gp->x, gp->y);
336 oprange(gp, &radius);
339 /* Ok, the object can get to where the x,y is */
342 if (mission != MI_AIR_DEFENSE) {
343 getsect(x, y, §);
344 if (getrel(getnatp(gp->own), sect.sct_own) > AT_WAR) {
347 * If the player->owner of the unit isn't at war
348 * with the victim, and doesn't own the
349 * sect being acted upon, and isn't the
350 * old player->owner of that sect, bounce them.
352 if (sect.sct_type != SCT_WATER &&
353 sect.sct_own != gp->own &&
354 sect.sct_oldown != gp->own)
360 glp = malloc(sizeof(struct genlist));
361 memset(glp, 0, sizeof(struct genlist));
362 glp->cp = get_empobj_chr(gp);
363 glp->thing = malloc(sizeof(item));
364 memcpy(glp->thing, &item, sizeof(item));
365 emp_insque(&glp->queue, &mi[gp->own].queue);
370 find_escorts(coord x, coord y, natid cn, struct emp_qelem *escorts)
377 snxtitem_all(&ni, EF_PLANE);
378 while (nxtitem(&ni, &plane)) {
379 if (plane.pln_own != cn)
382 if (plane.pln_mission != MI_ESCORT)
385 dist = mapdist(x, y, plane.pln_x, plane.pln_y);
386 if (dist > plane.pln_range / 2)
389 plp = malloc(sizeof(struct plist));
390 memset(plp, 0, sizeof(struct plist));
391 plp->pcp = &plchr[(int)plane.pln_type];
393 emp_insque(&plp->queue, escorts);
398 perform_mission(coord x, coord y, natid victim, struct emp_qelem *list,
399 int mission, char *s, int hardtarget)
401 struct emp_qelem *qp, missiles, bombers, escorts, airp, b, e;
402 struct emp_qelem *newqp;
410 struct plchrstr *pcp;
411 int dam = 0, dam2, mission_flags;
412 natid plane_owner = 0;
413 int md, range, air_dam = 0;
414 double prb, hitchance, vrange;
416 getsect(x, y, §);
418 emp_initque(&missiles);
419 emp_initque(&bombers);
420 emp_initque(&escorts);
423 for (qp = list->q_forw; qp != list; qp = qp->q_forw) {
424 glp = (struct genlist *)qp;
427 md = mapdist(x, y, gp->x, gp->y);
429 if (glp->thing->ef_type == EF_LAND) {
430 lp = (struct lndstr *)glp->thing;
432 if (mission == MI_SINTERDICT)
435 if ((mission == MI_INTERDICT) &&
436 (md > land_max_interdiction_range))
439 /* Too ponderous for interdiction fire */
440 if (lchr[(int)lp->lnd_type].l_flags & L_HEAVY)
443 range = roundrange(lnd_fire_range(lp));
449 putland(lp->lnd_uid, lp);
453 if (sect.sct_type == SCT_WATER) {
454 if (chance(lnd_acc(lp) / 100.0))
455 dam2 = ldround(dam2 / 2.0, 1);
458 if (sect.sct_type == SCT_WATER)
459 nreport(lp->lnd_own, N_SHP_SHELL, victim, 1);
461 nreport(lp->lnd_own, N_SCT_SHELL, victim, 1);
463 "%s fires at %s %s at %s\n",
464 prland(lp), cname(victim), s, xyas(x, y, lp->lnd_own));
466 mpr(victim, "%s %s fires at you at %s\n",
467 cname(lp->lnd_own), prland(lp), xyas(x, y, victim));
468 } else if (glp->thing->ef_type == EF_SHIP) {
469 sp = (struct shpstr *)glp->thing;
472 if (((mission == MI_INTERDICT) ||
473 (mission == MI_SINTERDICT)) &&
474 (md > ship_max_interdiction_range))
477 if ((mcp->m_flags & M_SUB) &&
478 (sect.sct_type != SCT_WATER))
481 if (mission == MI_SINTERDICT) {
482 if (!(mcp->m_flags & M_SONAR))
484 if (!(mcp->m_flags & M_DCH) && !(mcp->m_flags & M_SUBT))
486 vrange = techfact(sp->shp_tech, mcp->m_vrnge);
487 vrange *= sp->shp_effic / 200.0;
490 /* can't look all the time */
494 if (mcp->m_flags & M_SUB) {
495 /* If we aren't shooting at "subs" or "ships" don't fire at all from
499 range = roundrange(torprange(sp));
502 if (!line_of_sight(NULL, x, y, gp->x, gp->y))
504 dam2 = shp_torp(sp, 1);
505 putship(sp->shp_uid, sp);
508 hitchance = shp_torp_hitchance(sp, md);
511 "%s locking on %s %s in %s\n",
512 prship(sp), cname(victim), s, xyas(x, y, sp->shp_own));
514 "\tEffective torpedo range is %d.0\n", range);
516 "\tWhooosh... Hitchance = %d%%\n",
517 (int)(hitchance * 100));
519 if (!chance(hitchance)) {
520 wu(0, sp->shp_own, "\tMissed\n");
522 "Incoming torpedo sighted @ %s missed (whew)!\n",
526 wu(0, sp->shp_own, "\tBOOM!...\n");
528 nreport(victim, N_TORP_SHIP, 0, 1);
530 "\tTorpedo hit %s %s for %d damage\n",
531 cname(victim), s, dam2);
534 "Incoming torpedo sighted @ %s hits and does %d damage!\n",
535 xyas(x, y, victim), dam2);
537 range = roundrange(shp_fire_range(sp));
540 if (mission == MI_SINTERDICT)
541 dam2 = shp_dchrg(sp);
544 putship(sp->shp_uid, sp);
550 prb = (double)md / range;
555 if (sect.sct_type == SCT_WATER)
556 nreport(sp->shp_own, N_SHP_SHELL, victim, 1);
558 nreport(sp->shp_own, N_SCT_SHELL, victim, 1);
560 "%s fires at %s %s at %s\n",
561 prship(sp), cname(victim), s, xyas(x, y, sp->shp_own));
563 mpr(victim, "%s %s fires at you at %s\n",
564 cname(sp->shp_own), prship(sp), xyas(x, y, victim));
566 } else if (glp->thing->ef_type == EF_PLANE) {
568 if (pcp->pl_flags & P_M)
569 /* units have their own missile interdiction */
570 if (hardtarget != SECT_HARDTARGET || pcp->pl_flags & P_MAR)
573 /* save planes for later */
574 plp = malloc(sizeof(struct plist));
576 memset(plp, 0, sizeof(struct plist));
578 memcpy(&plp->plane, glp->thing, sizeof(struct plnstr));
579 if (plp->pcp->pl_flags & P_M)
580 emp_insque(&plp->queue, &missiles);
582 emp_insque(&plp->queue, &bombers);
583 plane_owner = plp->plane.pln_own;
589 if (!QEMPTY(&missiles)) {
590 /* I arbitrarily chose 100 mindam -KHS */
592 msl_launch_mindam(&missiles, x, y, hardtarget, EF_SECTOR, 100,
593 "sector", victim, mission);
594 qp = missiles.q_forw;
595 while (qp != (&missiles)) {
603 if (QEMPTY(&bombers)) {
606 glp = (struct genlist *)qp;
615 * If there are planes performing an
616 * interdict or support mission, find
617 * some escorts for them, if possible.
618 * Up to 2 per bomber, if possible.
620 find_escorts(x, y, plane_owner, &escorts);
622 if (mission == MI_SINTERDICT)
623 mission_pln_sel(&bombers, P_T | P_A, 0, hardtarget);
625 mission_pln_sel(&bombers, P_T, P_A, SECT_HARDTARGET);
627 mission_pln_sel(&escorts, P_ESC | P_F, 0, SECT_HARDTARGET);
629 for (qp = bombers.q_forw; qp != (&bombers); qp = qp->q_forw) {
630 plp = (struct plist *)qp;
631 if (!find_airport(&airp, plp->plane.pln_x, plp->plane.pln_y))
632 add_airport(&airp, plp->plane.pln_x, plp->plane.pln_y);
635 for (qp = airp.q_forw; qp != (&airp); qp = qp->q_forw) {
640 air = (struct airport *)qp;
641 md = mapdist(x, y, air->x, air->y);
646 /* Split off the bombers at this base into b */
647 divide(&bombers, &b, air->x, air->y);
649 /* Split off the escorts at this base into e */
650 divide(&escorts, &e, air->x, air->y);
653 mission_flags |= P_X; /* stealth (shhh) */
654 mission_flags |= P_H; /* gets turned off if not all choppers */
656 mission_flags = mission_pln_arm(&b, air->x, air->y, 2 * md, 'p', 0,
662 mission_flags = mission_pln_arm(&e, air->x, air->y, 2 * md, 'p', 0,
663 P_F | P_ESC, mission_flags);
665 pp = BestAirPath(buf, air->x, air->y, x, y);
666 if (CANT_HAPPEN(!pp))
668 wu(0, plane_owner, "Flying %s mission from %s\n",
669 mission_name(mission), xyas(air->x, air->y, plane_owner));
670 if (air->own && (air->own != plane_owner)) {
671 wu(0, air->own, "%s is flying %s mission from %s\n",
672 cname(plane_owner), mission_name(mission),
673 xyas(air->x, air->y, air->own));
676 ac_encounter(&b, &e, air->x, air->y, pp, mission_flags, 0);
680 air_damage(&b, x, y, mission, victim, s, hardtarget);
688 if (sect.sct_type == SCT_WATER)
689 nreport(plane_owner, N_SHP_BOMB, victim, 1);
691 nreport(plane_owner, N_SCT_BOMB, victim, 1);
694 /* free up all this memory */
697 glp = (struct genlist *)qp;
705 while (qp != (&escorts)) {
713 while (qp != (&bombers)) {
724 cando(int mission, int type)
728 if (type == EF_PLANE)
732 if (type == EF_PLANE)
736 if ((type == EF_PLANE) || (type == EF_SHIP))
744 if (type == EF_PLANE)
757 mission_name(short mission)
761 return "an interdiction";
765 return "a offensive support";
767 return "a defensive support";
773 return "a sub interdiction";
775 return "an air defense";
777 return "a mysterious";
781 show_mission(int type, struct nstr_item *np)
783 int first = 1, radius;
784 union empobj_storage item;
787 while (nxtitem(np, &item)) {
788 gp = (struct empobj *)&item;
789 if (!player->owner || gp->own == 0)
793 pr("Thing x,y op-sect rad mission\n");
796 pr("%-25s", obj_nameof(gp));
797 prxy(" %3d,%-3d", gp->x, gp->y, player->cnum);
798 if (gp->mission == MI_INTERDICT || gp->mission == MI_SUPPORT ||
799 gp->mission == MI_OSUPPORT ||
800 gp->mission == MI_DSUPPORT || gp->mission == MI_AIR_DEFENSE) {
802 oprange(gp, &radius);
803 prxy(" %3d,%-3d", gp->opx, gp->opy, player->cnum);
804 if (radius < gp->radius)
807 pr(" %4d", gp->radius);
808 } else if (gp->mission == MI_RESERVE) {
812 getsect(gp->x, gp->y, §);
813 if ((sect.sct_type == SCT_HEADQ) && (sect.sct_effic >= 60))
816 if (item.land.lnd_rad_max == 0)
819 plus += item.land.lnd_rad_max;
820 prxy(" %3d,%-3d", gp->x, gp->y, player->cnum);
822 } else if (gp->mission == MI_ESCORT) {
824 pr(" %4d", item.plane.pln_range / 2);
828 pr(" is on %s mission\n", mission_name(gp->mission));
830 pr(" has no mission.\n");
835 oprange(struct empobj *gp, int *radius)
839 switch (gp->ef_type) {
841 range = ldround(shp_fire_range((struct shpstr *)gp), 1);
844 range = ldround(lnd_fire_range((struct lndstr *)gp), 1);
847 /* missiles go one way, so we can use all the range */
848 if (plchr[(int)gp->type].pl_flags & P_M)
849 range = ((struct plnstr *)gp)->pln_range;
851 range = ((struct plnstr *)gp)->pln_range / 2;
865 * Remove all planes who cannot go on
866 * the mission from the plane list.
869 mission_pln_sel(struct emp_qelem *list, int wantflags, int nowantflags,
872 struct emp_qelem *qp, *next;
874 struct plchrstr *pcp;
877 for (qp = list->q_forw; qp != list; qp = next) {
879 plp = (struct plist *)qp;
883 if (pp->pln_effic < 40) {
889 if (pp->pln_mobil < 1) {
896 if (ontradingblock(EF_PLANE, pp)) {
903 if (!pln_capable(pp, wantflags, nowantflags)) {
909 if (!pln_airbase_ok(pp, 0, 0)) {
915 if (pcp->pl_flags & P_A) {
916 if (roll(100) > pln_identchance(pp, hardtarget, EF_SHIP)) {
923 putplane(pp->pln_uid, pp);
928 * Arm only the planes at x,y
931 mission_pln_arm(struct emp_qelem *list, coord x, coord y, int dist,
932 int mission, struct ichrstr *ip, int flags,
935 struct emp_qelem *qp;
936 struct emp_qelem *next;
940 for (qp = list->q_forw; qp != list; qp = next) {
942 plp = (struct plist *)qp;
950 if (CANT_HAPPEN(pp->pln_flags & PLN_LAUNCHED)
951 || mission_pln_equip(plp, ip, flags, mission) < 0) {
956 if (flags & (P_S | P_I)) {
957 if (plp->pcp->pl_flags & P_S)
958 mission_flags |= P_S;
959 if (plp->pcp->pl_flags & P_I)
960 mission_flags |= P_I;
962 if (!(plp->pcp->pl_flags & P_H))
963 /* no stealth on this mission */
964 mission_flags &= ~P_H;
965 if (!(plp->pcp->pl_flags & P_X))
966 /* no stealth on this mission */
967 mission_flags &= ~P_X;
968 if (!(plp->pcp->pl_flags & P_A)) {
969 /* no asw on this mission */
970 mission_flags &= ~P_A;
972 if (!(plp->pcp->pl_flags & P_MINE)) {
973 /* no asw on this mission */
974 mission_flags &= ~P_MINE;
977 pp->pln_flags |= PLN_LAUNCHED;
978 pp->pln_mobil -= pln_mobcost(dist, pp, flags);
979 putplane(pp->pln_uid, pp);
981 return mission_flags;
985 mission_pln_equip(struct plist *plp, struct ichrstr *ip, int flags,
988 struct plchrstr *pcp;
999 if (pp->pln_ship >= 0) {
1000 getship(pp->pln_ship, &ship);
1001 item = ship.shp_item;
1002 } else if (pp->pln_land >= 0) {
1003 getland(pp->pln_land, &land);
1004 item = land.lnd_item;
1006 getsect(pp->pln_x, pp->pln_y, §);
1007 item = sect.sct_item;
1009 if (pcp->pl_fuel > item[I_PETROL]) {
1012 item[I_PETROL] -= pcp->pl_fuel;
1013 if (!(flags & P_F)) {
1014 load = pln_load(pp);
1018 case 's': /* strategic bomb */
1019 case 'p': /* pinpoint bomb */
1020 if (pp->pln_nuketype == -1) {
1025 case 't': /* transport */
1026 case 'd': /* drop */
1027 if ((pcp->pl_flags & P_C) == 0 || ip == 0)
1030 needed = (load * 2) / ip->i_lbs;
1032 case 'a': /* paradrop */
1033 if ((pcp->pl_flags & (P_V | P_C)) == 0)
1036 needed = load / ip->i_lbs;
1038 case 'i': /* missile interception */
1044 case 'r': /* reconnaissance */
1045 case 0: /* plane interception */
1051 if (itype != I_NONE && needed <= 0)
1053 if (itype != I_NONE) {
1054 if (itype == I_SHELL && item[itype] < needed)
1055 item[itype] += supply_commod(plp->plane.pln_own,
1059 if (item[itype] < needed)
1061 item[itype] -= needed;
1063 if (itype == I_SHELL && (mission == 's' || mission == 'p'))
1064 plp->bombs = needed;
1068 if (pp->pln_ship >= 0)
1069 putship(ship.shp_uid, &ship);
1070 else if (pp->pln_land >= 0)
1071 putland(land.lnd_uid, &land);
1078 * Return 1 if this x,y pair is in the list
1081 find_airport(struct emp_qelem *airp, coord x, coord y)
1083 struct emp_qelem *qp;
1086 for (qp = airp->q_forw; qp != airp; qp = qp->q_forw) {
1087 a = (struct airport *)qp;
1088 if ((a->x == x) && (a->y == y))
1095 /* #*# This needs to be changed to include acc's -KHS */
1097 add_airport(struct emp_qelem *airp, coord x, coord y)
1102 a = malloc(sizeof(struct airport));
1106 getsect(x, y, §);
1107 a->own = sect.sct_own;
1109 emp_insque((struct emp_qelem *)a, airp);
1113 * Take all the planes in list 1 that
1114 * are at x,y, and put them into list 2.
1117 divide(struct emp_qelem *l1, struct emp_qelem *l2, coord x, coord y)
1119 struct emp_qelem *qp, *next;
1122 for (qp = l1->q_forw; qp != l1; qp = next) {
1124 plp = (struct plist *)qp;
1126 if (plp->plane.pln_x != x)
1128 if (plp->plane.pln_y != y)
1137 air_damage(struct emp_qelem *bombers, coord x, coord y, int mission,
1138 natid victim, char *s, int hardtarget)
1140 struct emp_qelem *qp;
1143 int newdam, dam = 0;
1147 for (qp = bombers->q_forw; qp != bombers; qp = qp->q_forw) {
1148 plp = (struct plist *)qp;
1151 if ((mission == MI_SINTERDICT) && !(plp->pcp->pl_flags & P_A))
1158 if (plp->pcp->pl_flags & P_A) {
1159 if (roll(100) > pln_identchance(pp, hardtarget, EF_SHIP)) {
1161 "\t%s detects sub movement in %s\n",
1162 prplane(pp), xyas(x, y, pp->pln_own));
1165 if (getrel(getnatp(pp->pln_own), victim) > HOSTILE) {
1167 "\t%s tracks %s %s at %s\n",
1168 prplane(pp), cname(victim), s, xyas(x, y, pp->pln_own));
1172 "\t%s depth-charging %s %s in %s\n",
1173 prplane(pp), cname(victim), s, xyas(x, y, pp->pln_own));
1176 "\t%s pinbombing %s %s in %s\n",
1177 prplane(pp), cname(victim), s, xyas(x, y, pp->pln_own));
1179 hitchance = pln_hitchance(pp, hardtarget, EF_SHIP);
1180 if (plp->plane.pln_nuketype != -1)
1182 else if (hardtarget != SECT_HARDTARGET)
1183 wu(0, pp->pln_own, "\t\t%d%% hitchance...", hitchance);
1184 /* Always calculate damage */
1185 if (roll(100) <= hitchance) {
1186 newdam = pln_damage(&plp->plane, x, y, 'p', &nukedam, 1);
1188 if (mission == MI_INTERDICT) {
1190 "\t\tnuclear warhead on plane %s does %d damage to %s %s\n",
1191 prplane(pp), nukedam, cname(victim), s);
1196 "\t\thit %s %s for %d damage\n",
1197 cname(victim), s, newdam);
1201 newdam = pln_damage(&plp->plane, x, y, 'p', &nukedam, 0);
1202 wu(0, pp->pln_own, "missed\n");
1203 if (mission == MI_SINTERDICT) {
1205 "RUMBLE... your sub in %s hears a depth-charge explode nearby\n",
1206 xyas(x, y, victim));
1207 } else if (*s == 's') {
1208 mpr(victim, "SPLASH! Bombs miss your %s in %s\n",
1209 s, xyas(x, y, victim));
1211 mpr(victim, "SPLAT! Bombs miss your %s in %s\n",
1212 s, xyas(x, y, victim));
1214 /* Now, even though we missed, the bombs
1216 collateral_damage(x, y, newdam);
1219 /* use up missiles */
1220 if (plp->pcp->pl_flags & P_M)
1228 * Check to see if anyone hostile to the victim
1229 * is running an air defense mission on this
1230 * sector. If so, do air combat
1233 air_defense(coord x, coord y, natid victim, struct emp_qelem *bomb_list,
1234 struct emp_qelem *esc_list)
1237 int mission_flags, combat = 0, rel, dist, z;
1238 struct emp_qelem *qp, interceptors, airp, i, empty, *next;
1240 struct genlist *glp;
1242 struct genlist mi[MAXNOC];
1249 for (qp = bomb_list->q_forw; qp != bomb_list; qp = qp->q_forw)
1251 for (qp = esc_list->q_forw; qp != esc_list; qp = qp->q_forw)
1254 memset(mi, 0, sizeof(mi));
1255 for (z = 1; z < MAXNOC; z++)
1256 emp_initque((struct emp_qelem *)&mi[z]);
1258 build_mission_list_type(mi, x, y, MI_AIR_DEFENSE, EF_PLANE, victim);
1260 for (cn = 1; cn < MAXNOC; cn++) {
1261 /* Check our relations */
1262 rel = getrel(getnatp(cn), victim);
1267 if (QEMPTY(&mi[cn].queue))
1270 /* Ok, make a list of all the interceptors. Note that this *copies* the
1271 * list from the mission creation. This list must be deleted later. */
1272 emp_initque(&interceptors);
1273 for (qp = mi[cn].queue.q_forw; qp != (&mi[cn].queue); qp = next) {
1275 glp = (struct genlist *)qp;
1277 if (CANT_HAPPEN(gp->ef_type != EF_PLANE))
1280 dist = mapdist(x, y, gp->x, gp->y);
1282 plp = malloc(sizeof(struct plist));
1283 memset(plp, 0, sizeof(struct plist));
1285 memcpy(&plp->plane, glp->thing, sizeof(struct plnstr));
1287 /* missiles go one way, so we can use all the range */
1288 if (!(plp->pcp->pl_flags & P_M))
1290 /* If it's out of range, free it and continue on */
1291 if (dist > plp->plane.pln_range) {
1295 emp_insque(&plp->queue, &interceptors);
1298 /* Remove those who cannot go */
1299 mission_pln_sel(&interceptors, P_F, 0, SECT_HARDTARGET);
1301 if (QEMPTY(&interceptors))
1304 /* Now, delete all the extras, but delete the first ones, not the last ones, so
1305 * that the higher numbered planes go into battle (they should be the better ones
1306 * at fighting, if all went well.) */
1308 for (qp = interceptors.q_forw; qp != (&interceptors);
1311 tcount -= count * 2;
1312 /* Just in case there are more incoming than we have */
1315 for (qp = interceptors.q_forw; qp != (&interceptors); qp = next) {
1319 /* Free it up and continue */
1321 glp = (struct genlist *)qp;
1326 /* Now, make a list of all the airports these planes are coming from */
1328 for (qp = interceptors.q_forw; qp != (&interceptors);
1330 plp = (struct plist *)qp;
1331 if (!find_airport(&airp, plp->plane.pln_x, plp->plane.pln_y))
1332 add_airport(&airp, plp->plane.pln_x, plp->plane.pln_y);
1335 /* Now, fly them out one airport at a time */
1336 for (qp = airp.q_forw; qp != (&airp); qp = qp->q_forw) {
1337 struct airport *air;
1339 air = (struct airport *)qp;
1340 dist = mapdist(x, y, air->x, air->y);
1344 /* Split off the interceptors at this base into i */
1345 divide(&interceptors, &i, air->x, air->y);
1348 mission_flags |= P_X; /* stealth (shhh) */
1349 /* gets turned off if not all choppers */
1350 mission_flags |= P_H;
1351 sam_intercept(bomb_list, &i, cn, victim, x, y, 0);
1352 sam_intercept(esc_list, &i, cn, victim, x, y, 1);
1354 /* Did we run out of interceptors? */
1357 /* Did we run out of bombers? */
1358 if (QEMPTY(bomb_list)) {
1359 /* Yes, so we have to put the rest of the interceptors back, and
1360 then continue, or we leak memory */
1365 mission_pln_arm(&i, air->x, air->y, 2 * dist, 0, 0, P_F,
1368 /* Did we run out of interceptors? */
1371 /* Did we run out of bombers? */
1372 if (QEMPTY(bomb_list)) {
1373 /* Yes, so we have to put the rest of the interceptors back, and
1374 then continue, or we leak memory */
1379 path = BestAirPath(buf, air->x, air->y, x, y);
1380 if (CANT_HAPPEN(!path)) {
1384 wu(0, cn, "Flying %s mission from %s\n",
1385 mission_name(MI_AIR_DEFENSE), xyas(air->x, air->y, cn));
1386 if (air->own && (air->own != cn)) {
1387 wu(0, air->own, "%s is flying %s mission from %s\n",
1388 cname(cn), mission_name(MI_AIR_DEFENSE),
1389 xyas(air->x, air->y, air->own));
1392 /* Now, fly the planes to the sector */
1393 emp_initque(&empty);
1394 ac_encounter(&i, &empty, air->x, air->y,
1395 path, mission_flags, 1);
1397 /* If none made it, continue */
1401 /* Some made it, so now they get to try to fight. */
1402 /* Intercept the escorts first */
1404 if (!QEMPTY(esc_list)) {
1405 mpr(victim, "%s air defense planes intercept!\n",
1407 ac_combat_headers(victim, cn);
1408 ac_airtoair(esc_list, &i);
1411 /* Now intercept the bombers */
1412 if (!QEMPTY(bomb_list)) {
1414 mpr(victim, "%s air defense planes intercept!\n",
1416 ac_combat_headers(victim, cn);
1418 ac_airtoair(bomb_list, &i);
1425 if (CANT_HAPPEN(!QEMPTY(&interceptors)))
1426 pln_put(&interceptors);
1429 /* We have to free all of these, if they are still there, otherwise they get
1430 lost and we leak memory all over the place. */
1431 for (cn = 1; cn < MAXNOC; cn++) {
1432 /* free up all this memory if it's still there */
1433 for (qp = mi[cn].queue.q_forw; qp != (&mi[cn].queue); qp = next) {
1435 glp = (struct genlist *)qp;