/*
* Empire - A multi-player, client/server Internet based war game.
- * Copyright (C) 1986-2006, Dave Pare, Jeff Bailey, Thomas Ruschak,
- * Ken Stevens, Steve McClure
+ * Copyright (C) 1986-2021, Dave Pare, Jeff Bailey, Thomas Ruschak,
+ * Ken Stevens, Steve McClure, Markus Armbruster
*
- * This program is free software; you can redistribute it and/or modify
+ * Empire is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* ---
*
* ---
*
* mslsub.c: Missile subroutine stuff
- *
+ *
* Known contributors to this file:
* Ken Stevens, 1995
* Steve McClure, 1996-2000
+ * Markus Armbruster, 2004-2021
*/
#include <config.h>
+#include <stdlib.h>
+#include "chance.h"
#include "misc.h"
+#include "nat.h"
+#include "news.h"
+#include "nsc.h"
+#include "nuke.h"
+#include "optlist.h"
+#include "plague.h"
+#include "plane.h"
+#include "prototypes.h"
#include "queue.h"
-#include "player.h"
#include "sect.h"
#include "ship.h"
-#include "optlist.h"
-#include "plane.h"
-#include "land.h"
-#include "news.h"
#include "xy.h"
-#include "nsc.h"
-#include "file.h"
-#include "nat.h"
-#include "path.h"
-#include "mission.h"
-#include "prototypes.h"
-
-int
-msl_equip(struct plnstr *pp)
-{
- struct plist pl;
-
- memset(&pl, 0, sizeof(struct plist));
- pl.pcp = plchr + pp->pln_type;
- pl.plane = *pp;
- return mission_pln_equip(&pl, 0, 0, 'p');
-}
int
-msl_hit(struct plnstr *pp, int hardtarget, int type, int news_item,
- int snews_item, char *what, coord x, coord y, int victim)
+msl_launch(struct plnstr *pp, int type, char *what, coord x, coord y,
+ natid victim, int *sublaunchp)
{
- int hit;
struct shpstr ship;
- struct sctstr sect;
+ struct nukstr nuke;
int sublaunch = 0;
- struct plchrstr *pcp = plchr + pp->pln_type;
- int hitchance = pln_hitchance(pp, hardtarget, type);
- char *from;
- int dam, dummyi;
+ char *base, *in_or_at, *from;
mpr(pp->pln_own, "Preparing to launch %s at %s %s %s%s\n",
prplane(pp),
cname(victim),
what,
- (type == EF_SHIP || type == EF_PLANE) ? "in " : "",
+ type != EF_SECTOR ? "in " : "",
xyas(x, y, pp->pln_own));
- mpr(pp->pln_own, "\tLaunching from ");
if (pp->pln_ship >= 0) {
getship(pp->pln_ship, &ship);
- mpr(pp->pln_own, "%s in ", prship(&ship));
+ base = prship(&ship);
+ in_or_at = " in ";
if (mchr[(int)ship.shp_type].m_flags & M_SUB) {
sublaunch = 1;
from = "in hatch";
} else
from = "on deck";
- mpr(pp->pln_own, "%s\n",
- xyas(ship.shp_x, ship.shp_y, pp->pln_own));
} else {
if (pp->pln_harden > 0) {
- mpr(pp->pln_own, "missile silo at ");
+ base = "missile silo";
+ in_or_at = " at ";
from = "in silo";
- } else
+ } else {
+ base = in_or_at = "";
from = "on launch pad";
- mpr(pp->pln_own, "%s\n", xyas(pp->pln_x, pp->pln_y, pp->pln_own));
+ }
}
+ mpr(pp->pln_own, "\tLaunching from %s%s%s\n",
+ base, in_or_at, xyas(pp->pln_x, pp->pln_y, pp->pln_own));
+
+ CANT_HAPPEN(pp->pln_flags & PLN_LAUNCHED);
+ pp->pln_flags |= PLN_LAUNCHED;
+ putplane(pp->pln_uid, pp);
if (chance((0.05 + (100 - pp->pln_effic) / 100.0)
* (1 - techfact(pp->pln_tech, 1.0)))) {
mpr(pp->pln_own, "KABOOOOM! Missile explodes %s!\n", from);
+ if (getnuke(nuk_on_plane(pp), &nuke)) {
+ mpr(pp->pln_own, "%s lost!\n", prnuke(&nuke));
+ nuke.nuk_effic = 0;
+ putnuke(nuke.nuk_uid, &nuke);
+ }
+#if 0
+ /*
+ * Disabled for now, because it breaks callers that call
+ * msl_launch() for each member of a list of planes, created
+ * by msl_sel() or perform_mission(). Damage to the base can
+ * damage other planes. Any copies of them in the list become
+ * stale. When msl_launch() modifies and writes back such a
+ * stale copy, the damage gets wiped out, triggering a seqno
+ * oops.
+ */
if (chance(0.33)) {
- dam = pln_damage(pp, pp->pln_x, pp->pln_y,
- 'p', &dummyi, 1) / 2;
- if (dam) {
- if (pp->pln_ship >= 0) {
- shipdamage(&ship, dam);
- putship(ship.shp_uid, &ship);
- } else {
- pr("Explosion damages %s %d%%",
- xyas(pp->pln_x, pp->pln_y, pp->pln_own), dam);
- getsect(pp->pln_x, pp->pln_y, §);
- sectdamage(§, dam, 0);
- putsect(§);
- }
+ struct sctstr sect;
+ int dam;
+
+ dam = pln_damage(pp, 'p', NULL) / 2;
+ if (pp->pln_ship >= 0) {
+ shipdamage(&ship, dam);
+ putship(ship.shp_uid, &ship);
+ } else {
+ mpr(pp->pln_own, "Explosion damages %s %d%%\n",
+ xyas(pp->pln_x, pp->pln_y, pp->pln_own), dam);
+ getsect(pp->pln_x, pp->pln_y, §);
+ sectdamage(§, dam);
+ putsect(§);
}
}
- return 0;
+#endif
+ return -1;
}
mpr(pp->pln_own, "\tSHWOOOOOSH! Missile launched!\n");
- if (pp->pln_nuketype != -1)
- mpr(pp->pln_own, "\tArming nuclear warheads...\n");
-
- if (pcp->pl_flags & P_T)
+ if (type != EF_PLANE)
mpr(victim, "Incoming %s missile sighted at %s...\n",
sublaunch ? "sub-launched" : cname(pp->pln_own),
xyas(x, y, victim));
- if (opt_PINPOINTMISSILE == 0 ||
- (pcp->pl_flags & P_T && !(pcp->pl_flags & P_MAR))) {
- if (msl_intercept(x, y, pp->pln_own, pcp->pl_def,
- sublaunch, P_N, P_O)) {
- return 0;
- }
+ if (type == EF_SECTOR || type == EF_LAND) {
+ if (msl_abm_intercept(pp, x, y, sublaunch))
+ return -1;
}
- if (pcp->pl_flags & P_MAR) {
- if (shp_missile_defense(x, y, pp->pln_own, pcp->pl_def)) {
- return 0;
+ if (type == EF_SHIP) {
+ if (shp_missile_defense(x, y, pp->pln_own, pln_def(pp))) {
+ return -1;
}
}
- if (pp->pln_nuketype != -1)
- hitchance = 100;
+ if (sublaunchp)
+ *sublaunchp = sublaunch;
+ return 0;
+}
- mpr(pp->pln_own, "\t%d%% hitchance...", hitchance);
- hit = (roll(100) <= hitchance);
+int
+msl_hit(struct plnstr *pp, int hardtarget, int type,
+ int news_item, int snews_item, int sublaunch, natid victim)
+{
+ int hitchance, hit;
- mpr(pp->pln_own, hit ? "HIT!\n" : "miss\n");
- if (pcp->pl_flags & P_T)
+ if (nuk_on_plane(pp) >= 0) {
+ mpr(pp->pln_own, "\tArming nuclear warheads...\n");
+ hit = 1;
+ } else {
+ hitchance = pln_hitchance(pp, hardtarget, type);
+ hit = pct_chance(hitchance);
+ mpr(pp->pln_own, "\t%d%% hit chance...%s\n", hitchance,
+ hit ? "HIT!" : "miss");
+ }
+
+ if (type != EF_PLANE)
mpr(victim, "...Incoming %s missile %s\n",
sublaunch ? "" : cname(pp->pln_own),
hit ? "HIT!\n" : "missed\n");
continue;
if (mission && plane.pln_mission != mission)
continue;
- if (getrel(getnatp(plane.pln_own), victim) >= NEUTRAL)
+ if (mission &&
+ plane.pln_radius < mapdist(x, y, plane.pln_opx, plane.pln_opy))
+ continue;
+ if (relations_with(plane.pln_own, victim) >= NEUTRAL)
continue;
/* missiles go one way, so we can use all the range */
if (plane.pln_range < mapdist(x, y, plane.pln_x, plane.pln_y))
continue;
if (plane.pln_effic < 100)
continue;
+ if (opt_MARKET) {
+ if (ontradingblock(EF_PLANE, &plane))
+ continue;
+ }
+ if (!pln_airbase_ok(&plane, 1, 0))
+ continue;
/* got a valid interceptor */
irv = malloc(sizeof(*irv));
- irv->bombs = 0;
- irv->misc = 0;
+ irv->load = 0;
+ irv->pstage = PLG_HEALTHY;
irv->pcp = &plchr[(int)plane.pln_type];
irv->plane = plane;
emp_insque(&irv->queue, list);
}
}
-int
-msl_intercept(coord x, coord y, natid bombown, int hardtarget,
- int sublaunch, int wantflags, int nowantflags)
+static int
+msl_intercept(struct plnstr *msl, struct sctstr *sp, int sublaunch,
+ struct emp_qelem *irvlist, char *att_name, char *def_name,
+ int news_item)
{
struct plnstr *pp;
- struct plchrstr *pcp;
- struct sctstr sect;
- struct emp_qelem *irvlist;
- struct emp_qelem foo;
struct emp_qelem *intlist;
struct emp_qelem intfoo;
struct emp_qelem *qp;
struct emp_qelem *next;
struct plist *ip;
int icount = 0;
- short destroyed = 0;
- char *att_name;
- char *def_name;
- int news_item;
- char *who = sublaunch ? "" : cname(bombown);
+ short destroyed;
+ char *who = sublaunch ? "" : cname(msl->pln_own);
- getsect(x, y, §);
- if (wantflags == P_O && !nowantflags) {
- att_name = "satellite";
- def_name = "a-sat missile";
- news_item = N_SAT_KILL;
- if (sect.sct_own) {
- mpr(sect.sct_own, "%s has positioned a satellite over %s\n",
- sublaunch ? "someone" : cname(bombown),
- xyas(x, y, sect.sct_own));
- }
- } else if (wantflags == P_N && nowantflags == P_O) {
- att_name = "warhead";
- def_name = "abm";
- news_item = sublaunch ? N_NUKE_SSTOP : N_NUKE_STOP;
- } else {
- att_name = "elephant";
- def_name = "tomato"; /* heh -KHS */
- news_item = N_NUKE_STOP;
- }
- irvlist = &foo;
-
- /* get all hostile abms in range */
- msl_sel(irvlist, x, y, bombown, wantflags, nowantflags, 0);
intlist = &intfoo;
emp_initque(intlist);
/* First choose interceptors belonging to the target sector */
next = qp->q_forw;
ip = (struct plist *)qp;
pp = &ip->plane;
- if (pp->pln_own != sect.sct_own)
+ if (pp->pln_own != sp->sct_own)
continue;
- pcp = ip->pcp;
- if (mission_pln_equip(ip, 0, 0, 'i') < 0) {
+ if (mission_pln_equip(ip, NULL, 0) < 0) {
emp_remque(qp);
free(qp);
continue;
next = qp->q_forw;
ip = (struct plist *)qp;
pp = &ip->plane;
- pcp = ip->pcp;
- if (mission_pln_equip(ip, 0, 0, 'i') < 0) {
+ if (mission_pln_equip(ip, NULL, 0) < 0) {
emp_remque(qp);
free(qp);
continue;
free(qp);
}
if (icount == 0) {
- if (sect.sct_own != 0)
- mpr(sect.sct_own, "No %ss launched to intercept.\n", def_name);
- return destroyed;
+ mpr(sp->sct_own, "No %ss launched to intercept.\n", def_name);
+ return 0;
}
/* attempt to destroy incoming missile */
- while (!QEMPTY(intlist)) {
+ destroyed = 0;
+ while (!destroyed && !QEMPTY(intlist)) {
qp = intlist->q_forw;
ip = (struct plist *)qp;
pp = &ip->plane;
- pcp = ip->pcp;
- mpr(bombown, "%s %s launched in defense!\n",
+ mpr(msl->pln_own, "%s %s launched in defense!\n",
cname(pp->pln_own), def_name);
- if (sect.sct_own == pp->pln_own) {
- mpr(sect.sct_own, "%s launched to intercept %s %s!\n",
+ if (sp->sct_own == pp->pln_own) {
+ mpr(sp->sct_own, "%s launched to intercept %s %s!\n",
def_name, who, att_name);
} else {
- if (sect.sct_own)
- mpr(sect.sct_own,
- "%s launched an %s to intercept the %s %s!\n",
- cname(pp->pln_own), def_name, who, att_name);
+ mpr(sp->sct_own,
+ "%s launched an %s to intercept the %s %s!\n",
+ cname(pp->pln_own), def_name, who, att_name);
mpr(pp->pln_own,
"%s launched to intercept %s %s arcing towards %s territory!\n",
- def_name, who, att_name, cname(sect.sct_own));
+ def_name, who, att_name, cname(sp->sct_own));
}
- if (!destroyed &&
- msl_hit(pp, hardtarget, EF_PLANE, news_item, news_item,
- att_name, x, y, bombown)) {
- mpr(bombown, "%s destroyed by %s %s!\n",
+ if (msl_launch(pp, EF_PLANE, att_name, sp->sct_x, sp->sct_y,
+ msl->pln_own, NULL) >= 0
+ && msl_hit(pp, pln_def(msl), EF_PLANE, 0, 0, 0, msl->pln_own)) {
+ mpr(msl->pln_own, "%s destroyed by %s %s!\n",
att_name, cname(pp->pln_own), def_name);
- if (sect.sct_own)
- mpr(sect.sct_own, "%s %s intercepted!\n", who, att_name);
- if (sect.sct_own != pp->pln_own)
+ mpr(sp->sct_own, "%s %s intercepted!\n", who, att_name);
+ if (sp->sct_own != pp->pln_own)
mpr(pp->pln_own, "%s %s intercepted!\n", who, att_name);
+ if (sublaunch)
+ nreport(pp->pln_own, news_item, 0, 1);
+ else
+ nreport(pp->pln_own, news_item, msl->pln_own, 1);
destroyed = 1;
}
/* zap the missile */
putplane(pp->pln_uid, pp);
emp_remque(qp);
free(qp);
- if (destroyed)
- break;
}
/* Clean out what is left in the list */
while (!QEMPTY(intlist)) {
free(qp);
}
if (destroyed)
- return destroyed;
+ return 1;
if (icount) {
- mpr(bombown, "%s made it through %s defenses!\n",
+ mpr(msl->pln_own, "%s made it through %s defenses!\n",
+ att_name, def_name);
+ mpr(sp->sct_own, "%s made it through %s defenses!\n",
att_name, def_name);
- if (sect.sct_own)
- mpr(sect.sct_own, "%s made it through %s defenses!\n",
- att_name, def_name);
}
- return destroyed;
+ return 0;
}
-/* Keep launching missiles on list until mindam damage has been done */
int
-msl_launch_mindam(struct emp_qelem *list, coord x, coord y, int hardtarget,
- int type, int mindam, char *whatp, int victim,
- int mission)
+msl_abm_intercept(struct plnstr *msl, coord x, coord y, int sublaunch)
{
- struct emp_qelem *qp;
- struct emp_qelem *next;
- struct plist *plp;
- int newdam, dam = 0;
- int nukedam = 0;
- int news_item;
- int snews_item;
+ struct sctstr sect;
+ struct emp_qelem irvlist;
- if (type == EF_SHIP) {
- news_item = N_SHP_MISS;
- snews_item = N_SHP_SMISS;
- } else if (type == EF_LAND) {
- news_item = N_LND_MISS;
- snews_item = N_LND_SMISS;
- } else {
- news_item = N_SCT_MISS;
- snews_item = N_SCT_SMISS;
- }
+ getsect(x, y, §);
+ msl_sel(&irvlist, x, y, msl->pln_own, P_N, 0, 0);
+ return msl_intercept(msl, §, sublaunch,
+ &irvlist, "warhead", "abm",
+ sublaunch ? N_NUKE_SSTOP : N_NUKE_STOP);
+}
- for (qp = list->q_back; qp != list && dam < mindam && !nukedam;
- qp = next) {
- next = qp->q_back;
- plp = (struct plist *)qp;
+int
+msl_asat_intercept(struct plnstr *msl, coord x, coord y)
+{
+ struct sctstr sect;
+ struct emp_qelem irvlist;
- if (mission_pln_equip(plp, 0, 0, 'p') >= 0) {
- if (msl_hit(&plp->plane,
- hardtarget, type, news_item, snews_item,
- whatp, x, y, victim)) {
- newdam = pln_damage(&plp->plane, x, y, 'p', &nukedam, 1);
- if (nukedam) {
- if (mission == MI_INTERDICT && type == EF_SECTOR)
- dam += nukedam;
- } else
- dam += newdam;
- } else {
- /* Missiles that miss have to hit somewhere! */
- newdam = pln_damage(&plp->plane, x, y, 'p', &nukedam, 0);
- collateral_damage(x, y, newdam, 0);
- }
- plp->plane.pln_effic = 0;
- putplane(plp->plane.pln_uid, &plp->plane);
- emp_remque(qp);
- free(qp);
- }
- }
- return dam;
+ getsect(x, y, §);
+ mpr(sect.sct_own, "%s has positioned a satellite over %s\n",
+ cname(msl->pln_own), xyas(x, y, sect.sct_own));
+ msl_sel(&irvlist, x, y, msl->pln_own, P_O, 0, 0);
+ return msl_intercept(msl, §, 0,
+ &irvlist, "satellite", "a-sat missile",
+ N_SAT_KILL);
}
projects / empserver / blobdiff