/*
* 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) 1986-2015, 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/>.
*
* ---
*
* ---
*
* shpsub.c: Ship subroutine stuff
- *
+ *
* Known contributors to this file:
* Ken Stevens, 1995
* Steve McClure, 1996-2000
- * Markus Armbruster, 2006
+ * Markus Armbruster, 2006-2015
*/
#include <config.h>
-#include <math.h>
#include <stdlib.h>
+#include "chance.h"
#include "damage.h"
+#include "empobj.h"
#include "file.h"
#include "map.h"
#include "misc.h"
#include "mission.h"
+#include "news.h"
#include "nsc.h"
#include "optlist.h"
#include "path.h"
#include "prototypes.h"
#include "queue.h"
#include "server.h"
-#include "xy.h"
-#include "empobj.h"
#include "unit.h"
+#include "xy.h"
+static void shp_nav_put_one(struct ulist *);
static int shp_check_one_mines(struct ulist *);
-static int shp_hit_mine(struct shpstr *, struct mchrstr *);
-static void shp_mess(char *, struct ulist *);
+static int shp_hit_mine(struct shpstr *);
-void
-shp_sel(struct nstr_item *ni, struct emp_qelem *list)
+static struct ulist *
+shp_find_capable(struct emp_qelem *list, int flags)
+{
+ struct emp_qelem *qp;
+ struct ulist *mlp;
+ for (qp = list->q_back; qp != list; qp = qp->q_back) {
+ mlp = (struct ulist *)qp;
+ if (mchr[mlp->unit.ship.shp_type].m_flags & flags)
+ return mlp;
+ }
+ return NULL;
+}
- /* int wantflags;
- int nowantflags;
- */
+int
+shp_may_nav(struct shpstr *sp, struct shpstr *flg, char *suffix)
{
- struct shpstr ship;
- struct mchrstr *mcp;
+ struct sctstr sect;
+
+ if (!sp->shp_own || !getsect(sp->shp_x, sp->shp_y, §)) {
+ CANT_REACH();
+ return 0;
+ }
+
+ if (opt_MARKET && ontradingblock(EF_SHIP, sp)) {
+ mpr(sp->shp_own, "%s is on the trading block%s\n",
+ prship(sp), suffix);
+ return 0;
+ }
+
+ if (sp->shp_item[I_MILIT] == 0 && sp->shp_item[I_CIVIL] == 0) {
+ mpr(sp->shp_own, "%s is crewless%s\n", prship(sp), suffix);
+ return 0;
+ }
+
+ switch (shp_check_nav(sp, §)) {
+ case SHP_STUCK_NOT:
+ break;
+ case SHP_STUCK_CONSTRUCTION:
+ mpr(sp->shp_own, "%s is caught in a construction zone%s\n",
+ prship(sp), suffix);
+ return 0;
+ default:
+ CANT_REACH();
+ /* fall through */
+ case SHP_STUCK_CANAL:
+ case SHP_STUCK_IMPASSABLE:
+ mpr(sp->shp_own, "%s is landlocked%s\n", prship(sp), suffix);
+ return 0;
+ }
+
+ if (flg && (sp->shp_x != flg->shp_x || sp->shp_y != flg->shp_y)) {
+ mpr(sp->shp_own, "%s is not with the flagship%s\n",
+ prship(sp), suffix);
+ return 0;
+ }
+ return 1;
+}
+
+void
+shp_sel(struct nstr_item *ni, struct emp_qelem *list)
+{
+ struct shpstr ship, *flg = NULL;
struct ulist *mlp;
emp_initque(list);
while (nxtitem(ni, &ship)) {
- if (!player->owner)
- continue;
- mcp = &mchr[(int)ship.shp_type];
- /* if (wantflags && (mcp->m_flags & wantflags) != wantflags)
- continue;
- if (nowantflags && mcp->m_flags & nowantflags)
- continue;
+ /*
+ * It would be nice to let deities navigate foreign ships, but
+ * much of the code assumes that only the ship's owner can
+ * navigate it.
*/
- if (opt_MARKET) {
- if (ontradingblock(EF_SHIP, &ship)) {
- pr("ship #%d inelligible - it's for sale.\n",
- ship.shp_uid);
- continue;
- }
- }
- /* This abuse is better fixed by building a ship with the normal negative
- mobility that everything else is built with */
-/*
- if (opt_MOB_ACCESS) {
- if (ship.shp_effic < 21 &&
- ship.shp_mobil < etu_per_update) {
- pr("%s needs at least %d mob to navigate.\n",
- prship(&ship), etu_per_update);
+ if (!ship.shp_own || ship.shp_own != player->cnum)
continue;
- }
- }
-*/
+ if (!shp_may_nav(&ship, flg, ""))
+ continue;
+
ship.shp_mission = 0;
ship.shp_rflags = 0;
memset(ship.shp_rpath, 0, sizeof(ship.shp_rpath));
putship(ship.shp_uid, &ship);
- mlp = malloc(sizeof(struct ulist));
- mlp->chrp = (struct empobj_chr *)mcp;
- mlp->unit.ship = ship;
- mlp->mobil = ship.shp_mobil;
- emp_insque(&mlp->queue, list);
+ mlp = shp_insque(&ship, list);
+ if (!flg)
+ flg = &mlp->unit.ship;
}
}
-/* This function assumes that the list was created by shp_sel */
+/*
+ * Append SP to LIST.
+ * Return the new list link.
+ */
+struct ulist *
+shp_insque(struct shpstr *sp, struct emp_qelem *list)
+{
+ struct ulist *mlp = malloc(sizeof(struct ulist));
+
+ mlp->unit.ship = *sp;
+ mlp->mobil = sp->shp_mobil;
+ emp_insque(&mlp->queue, list);
+ return mlp;
+}
+
void
-shp_nav(struct emp_qelem *list, double *minmobp, double *maxmobp,
- int *togetherp, natid actor)
+shp_nav_stay_behind(struct emp_qelem *list, natid actor)
{
struct emp_qelem *qp;
struct emp_qelem *next;
struct ulist *mlp;
- struct sctstr sect;
- struct shpstr ship;
- coord allx;
- coord ally;
- int first = 1;
+ struct shpstr *sp, *flg = NULL;
+ char and_stays[32];
- *minmobp = 9876.0;
- *maxmobp = -9876.0;
- *togetherp = 1;
for (qp = list->q_back; qp != list; qp = next) {
next = qp->q_back;
mlp = (struct ulist *)qp;
- getship(mlp->unit.ship.shp_uid, &ship);
- if (ship.shp_own != actor) {
+ sp = &mlp->unit.ship;
+ getship(sp->shp_uid, sp);
+
+ if (sp->shp_own != actor) {
mpr(actor, "%s was sunk at %s\n",
- prship(&ship), xyas(ship.shp_x, ship.shp_y, actor));
- emp_remque((struct emp_qelem *)mlp);
+ prship(sp), xyas(sp->shp_x, sp->shp_y, actor));
+ emp_remque(&mlp->queue);
free(mlp);
continue;
}
- if (opt_SAIL) {
- if (*ship.shp_path && !update_pending) {
- shp_mess("has a sail path", mlp);
- mpr(actor, "Use `sail <#> -' to reset\n");
- continue;
- }
- }
- /* check crew - uws don't count */
- if (ship.shp_item[I_MILIT] == 0 && ship.shp_item[I_CIVIL] == 0) {
- shp_mess("is crewless", mlp);
- continue;
- }
- if (!getsect(ship.shp_x, ship.shp_y, §)) {
- shp_mess("was sucked into the sky by a strange looking spaceship", mlp); /* heh -KHS */
- continue;
- }
- switch (shp_check_nav(§, &ship)) {
- case CN_CONSTRUCTION:
- shp_mess("is caught in a construction zone", mlp);
- continue;
- case CN_LANDLOCKED:
- shp_mess("is landlocked", mlp);
- continue;
- case CN_NAVIGABLE:
- break;
- case CN_ERROR:
- default:
- shp_mess("was just swallowed by a big green worm", mlp);
+
+ snprintf(and_stays, sizeof(and_stays), " & stays in %s",
+ xyas(sp->shp_x, sp->shp_y, actor));
+ if (!shp_may_nav(sp, flg, and_stays)) {
+ shp_nav_put_one(mlp);
continue;
}
- if (first) {
- allx = ship.shp_x;
- ally = ship.shp_y;
- first = 0;
- }
- if (ship.shp_x != allx || ship.shp_y != ally)
- *togetherp = 0;
- if (ship.shp_mobil + 1 < (int)mlp->mobil) {
- mlp->mobil = ship.shp_mobil;
+
+ if (!flg)
+ flg = sp;
+ if (sp->shp_mobil + 1 < (int)mlp->mobil) {
+ mlp->mobil = sp->shp_mobil;
}
- if (mlp->mobil < *minmobp)
- *minmobp = mlp->mobil;
- if (mlp->mobil > *maxmobp)
- *maxmobp = mlp->mobil;
- mlp->unit.ship = ship;
}
}
void
-shp_put(struct emp_qelem *list, natid actor)
+shp_nav_put(struct emp_qelem *list, natid actor)
{
- struct emp_qelem *qp;
- struct emp_qelem *newqp;
+ struct emp_qelem *qp, *next;
struct ulist *mlp;
+ struct shpstr *sp;
- qp = list->q_back;
- while (qp != list) {
+ for (qp = list->q_back; qp != list; qp = next) {
+ next = qp->q_back;
mlp = (struct ulist *)qp;
- mpr(actor, "%s stopped at %s\n", prship(&mlp->unit.ship),
- xyas(mlp->unit.ship.shp_x, mlp->unit.ship.shp_y,
- mlp->unit.ship.shp_own));
- mlp->unit.ship.shp_mobil = (int)mlp->mobil;
- putship(mlp->unit.ship.shp_uid, &mlp->unit.ship);
- newqp = qp->q_back;
- emp_remque(qp);
- free(qp);
- qp = newqp;
+ sp = &mlp->unit.ship;
+ mpr(actor, "%s stopped at %s\n",
+ prship(sp), xyas(sp->shp_x, sp->shp_y, actor));
+ shp_nav_put_one(mlp);
}
}
+static void
+shp_nav_put_one(struct ulist *mlp)
+{
+ mlp->unit.ship.shp_mobil = (int)mlp->mobil;
+ putship(mlp->unit.ship.shp_uid, &mlp->unit.ship);
+ emp_remque(&mlp->queue);
+ free(mlp);
+}
+
+/*
+ * Sweep seamines with engineers in SHIP_LIST for ACTOR.
+ * All ships in SHIP_LIST must be in the same sector.
+ * If EXPLICIT is non-zero, this is for an explicit sweep command from
+ * a player. Else it's an automatic "on the move" sweep.
+ * If TAKEMOB is non-zero, require and charge mobility.
+ * Return non-zero when the ships should stop.
+ */
int
-shp_sweep(struct emp_qelem *ship_list, int verbose, int takemob, natid actor)
+shp_sweep(struct emp_qelem *ship_list, int explicit, int takemob,
+ natid actor)
{
struct emp_qelem *qp;
struct emp_qelem *next;
struct sctstr sect;
int mines, m, max, shells;
int changed = 0;
- int stopping = 0;
+ int stopping = 0, first = 1;
+
+ mlp = shp_find_capable(ship_list, M_SWEEP);
+ if (!mlp) {
+ if (explicit)
+ mpr(actor, "No minesweepers!\n");
+ return 0;
+ }
+
+ getsect(mlp->unit.ship.shp_x, mlp->unit.ship.shp_y, §);
+ if (sect.sct_type != SCT_WATER) {
+ if (explicit)
+ mpr(actor, "%s is a %s. No seamines there!\n",
+ xyas(sect.sct_x, sect.sct_y, actor),
+ dchr[sect.sct_type].d_name);
+ return 0;
+ }
for (qp = ship_list->q_back; qp != ship_list; qp = next) {
next = qp->q_back;
mlp = (struct ulist *)qp;
- if (!(((struct mchrstr *)mlp->chrp)->m_flags & M_SWEEP)) {
- if (verbose)
- mpr(actor, "%s doesn't have minesweeping capability!\n",
- prship(&mlp->unit.ship));
- continue;
- }
- if (takemob && mlp->mobil <= 0.0) {
- if (verbose)
- mpr(actor, "%s is out of mobility!\n",
- prship(&mlp->unit.ship));
- continue;
- }
- getsect(mlp->unit.ship.shp_x, mlp->unit.ship.shp_y, §);
- if (sect.sct_type != SCT_WATER) {
- if (verbose)
- mpr(actor, "%s is not at sea. No mines there!\n",
- prship(&mlp->unit.ship));
+ if (!(mchr[mlp->unit.ship.shp_type].m_flags & M_SWEEP))
continue;
- }
if (takemob) {
+ if (mlp->mobil <= 0.0) {
+ if (explicit)
+ mpr(actor, "%s is out of mobility!\n",
+ prship(&mlp->unit.ship));
+ continue;
+ }
mlp->mobil -= shp_mobcost(&mlp->unit.ship);
mlp->unit.ship.shp_mobil = (int)mlp->mobil;
}
putship(mlp->unit.ship.shp_uid, &mlp->unit.ship);
+ getsect(mlp->unit.ship.shp_x, mlp->unit.ship.shp_y, §);
if (!(mines = sect.sct_mines))
continue;
- max = ((struct mchrstr *)mlp->chrp)->m_item[I_SHELL];
+ max = mchr[mlp->unit.ship.shp_type].m_item[I_SHELL];
shells = mlp->unit.ship.shp_item[I_SHELL];
for (m = 0; mines > 0 && m < 5; m++) {
if (chance(0.66)) {
+ if (first) {
+ mpr(actor, "Approaching minefield at %s...\n",
+ xyas(sect.sct_x, sect.sct_y, actor));
+ first = 0;
+ }
mpr(actor, "Sweep...\n");
mines--;
shells = MIN(max, shells + 1);
}
sect.sct_mines = mines;
mlp->unit.ship.shp_item[I_SHELL] = shells;
- if (shp_check_one_mines(mlp)) {
- stopping = 1;
- emp_remque(qp);
- free(qp);
- }
putship(mlp->unit.ship.shp_uid, &mlp->unit.ship);
putsect(§);
+ stopping |= shp_check_one_mines(mlp);
}
if (changed)
writemap(actor);
return 0;
if (chance(DMINE_HITCHANCE(sect.sct_mines))) {
actor = mlp->unit.ship.shp_own;
- shp_hit_mine(&mlp->unit.ship, ((struct mchrstr *)mlp->chrp));
+ shp_hit_mine(&mlp->unit.ship);
sect.sct_mines--;
if (map_set(actor, sect.sct_x, sect.sct_y, 'X', 0))
writemap(actor);
putsect(§);
putship(mlp->unit.ship.shp_uid, &mlp->unit.ship);
- if (!mlp->unit.ship.shp_own)
- return 1;
+ if (!mlp->unit.ship.shp_own) {
+ emp_remque(&mlp->queue);
+ free(mlp);
+ }
+ return 1;
}
return 0;
}
{
struct emp_qelem *qp;
struct emp_qelem *next;
- struct ulist *mlp;
int stopping = 0;
for (qp = ship_list->q_back; qp != ship_list; qp = next) {
next = qp->q_back;
- mlp = (struct ulist *)qp;
- if (shp_check_one_mines(mlp)) {
- stopping = 1;
- emp_remque(qp);
- free(qp);
- }
+ stopping |= shp_check_one_mines((struct ulist *)qp);
}
return stopping;
}
-void
-shp_list(struct emp_qelem *ship_list)
-{
- struct emp_qelem *qp;
- struct emp_qelem *next;
- struct ulist *mlp;
- struct shpstr *shp;
-
- pr("shp# ship type x,y fl eff mil sh gun pn he xl ln mob tech\n");
-
- for (qp = ship_list->q_back; qp != ship_list; qp = next) {
- next = qp->q_back;
- mlp = (struct ulist *)qp;
- shp = &mlp->unit.ship;
- pr("%4d ", shp->shp_uid);
- pr("%-16.16s ", ((struct mchrstr *)mlp->chrp)->m_name);
- prxy("%4d,%-4d ", shp->shp_x, shp->shp_y, mlp->unit.ship.shp_own);
- pr("%1.1s", &shp->shp_fleet);
- pr("%4d%%", shp->shp_effic);
- pr("%4d", shp->shp_item[I_MILIT]);
- pr("%4d", shp->shp_item[I_SHELL]);
- pr("%4d", shp->shp_item[I_GUN]);
- count_planes(shp);
- pr("%3d", shp->shp_nplane);
- pr("%3d", shp->shp_nchoppers);
- pr("%3d", shp->shp_nxlight);
- count_units(shp);
- pr("%3d", shp->shp_nland);
- pr("%4d", shp->shp_mobil);
- pr("%4d\n", shp->shp_tech);
- }
-}
-
-static void
-shp_mess(char *str, struct ulist *mlp)
-{
- mpr(mlp->unit.ship.shp_own, "%s %s & stays in %s\n",
- prship(&mlp->unit.ship),
- str, xyas(mlp->unit.ship.shp_x, mlp->unit.ship.shp_y,
- mlp->unit.ship.shp_own));
- mlp->unit.ship.shp_mobil = (int)mlp->mobil;
- putship(mlp->unit.ship.shp_uid, &mlp->unit.ship);
- emp_remque((struct emp_qelem *)mlp);
- free(mlp);
-}
-
-int
-shp_check_nav(struct sctstr *sect, struct shpstr *shp)
+/*
+ * Return whether and why SP would be stuck in SECTP.
+ */
+enum shp_stuck
+shp_check_nav(struct shpstr *sp, struct sctstr *sectp)
{
- switch (dchr[sect->sct_type].d_nav) {
+ switch (dchr[sectp->sct_type].d_nav) {
case NAVOK:
break;
case NAV_CANAL:
- if (mchr[(int)shp->shp_type].m_flags & M_CANAL) {
- if (sect->sct_effic < 2)
- return CN_CONSTRUCTION;
- } else
- return CN_LANDLOCKED;
- break;
+ if (!(mchr[sp->shp_type].m_flags & M_CANAL)) {
+ return SHP_STUCK_CANAL;
+ }
+ /* fall through */
case NAV_02:
- if (sect->sct_effic < 2)
- return CN_CONSTRUCTION;
+ if (sectp->sct_effic < 2)
+ return SHP_STUCK_CONSTRUCTION;
break;
case NAV_60:
- if (sect->sct_effic < 60)
- return CN_CONSTRUCTION;
+ if (sectp->sct_effic < 60)
+ return SHP_STUCK_CONSTRUCTION;
break;
default:
- return CN_LANDLOCKED;
+ CANT_REACH();
+ /* fall through */
+ case NAV_NONE:
+ return SHP_STUCK_IMPASSABLE;
}
- return CN_NAVIGABLE;
+ return SHP_STUCK_NOT;
}
int
if (mlp->unit.ship.shp_x != x || mlp->unit.ship.shp_y != y)
continue;
if (wantflags &&
- (((struct mchrstr *)mlp->chrp)->m_flags & wantflags) != wantflags)
+ (mchr[mlp->unit.ship.shp_type].m_flags & wantflags) != wantflags)
continue;
if (nowantflags &&
- ((struct mchrstr *)mlp->chrp)->m_flags & nowantflags)
+ mchr[mlp->unit.ship.shp_type].m_flags & nowantflags)
continue;
++count;
}
static void
shp_damage_one(struct ulist *mlp, int dam)
{
+ /* ship might have changed (launched interceptors, missile defense) */
+ getship(mlp->unit.ship.shp_uid, &mlp->unit.ship);
shipdamage(&mlp->unit.ship, dam);
putship(mlp->unit.ship.shp_uid, &mlp->unit.ship);
if (!mlp->unit.ship.shp_own) {
- emp_remque((struct emp_qelem *)mlp);
+ emp_remque(&mlp->queue);
free(mlp);
}
}
if (mlp->unit.ship.shp_x != x || mlp->unit.ship.shp_y != y)
continue;
if (wantflags &&
- (((struct mchrstr *)mlp->chrp)->m_flags & wantflags) != wantflags)
+ (mchr[mlp->unit.ship.shp_type].m_flags & wantflags) != wantflags)
continue;
if (nowantflags &&
- ((struct mchrstr *)mlp->chrp)->m_flags & nowantflags)
+ mchr[mlp->unit.ship.shp_type].m_flags & nowantflags)
continue;
shp_damage_one(mlp, dam);
}
if (newx != mlp->unit.ship.shp_x || newy != mlp->unit.ship.shp_y)
continue;
if (wantflags &&
- (((struct mchrstr *)mlp->chrp)->m_flags & wantflags) != wantflags)
+ (mchr[mlp->unit.ship.shp_type].m_flags & wantflags) != wantflags)
continue;
if (nowantflags &&
- ((struct mchrstr *)mlp->chrp)->m_flags & nowantflags)
+ mchr[mlp->unit.ship.shp_type].m_flags & nowantflags)
continue;
return 1;
}
}
static struct ulist *
-most_valuable_ship(struct emp_qelem *list)
+most_valuable_ship(struct emp_qelem *list, coord x, coord y)
{
struct emp_qelem *qp;
struct emp_qelem *next;
struct ulist *mlp;
- struct ulist *mvs = 0;
+ struct ulist *mvs = NULL;
for (qp = list->q_back; qp != list; qp = next) {
next = qp->q_back;
mlp = (struct ulist *)qp;
- if (((struct mchrstr *)mlp->chrp)->m_flags & M_SUB)
+ if (mlp->unit.ship.shp_x != x || mlp->unit.ship.shp_y != y)
continue;
- if (!((struct mchrstr *)mlp->chrp)->m_nxlight &&
- !((struct mchrstr *)mlp->chrp)->m_nchoppers &&
- ((struct mchrstr *)mlp->chrp)->m_cost < 1000 &&
- !((struct mchrstr *)mlp->chrp)->m_nplanes &&
- !((struct mchrstr *)mlp->chrp)->m_nland)
+ if (mchr[mlp->unit.ship.shp_type].m_flags & M_SUB)
+ continue;
+ if (!mchr[mlp->unit.ship.shp_type].m_nxlight &&
+ !mchr[mlp->unit.ship.shp_type].m_nchoppers &&
+ mchr[mlp->unit.ship.shp_type].m_cost < 1000 &&
+ !mchr[mlp->unit.ship.shp_type].m_nplanes &&
+ !mchr[mlp->unit.ship.shp_type].m_nland)
continue;
if (!mvs) {
mvs = mlp;
continue;
}
- if (((struct mchrstr *)mlp->chrp)->m_cost * mlp->unit.ship.shp_effic >
- ((struct mchrstr *)mlp->chrp)->m_cost * mvs->unit.ship.shp_effic)
+ if (mchr[mlp->unit.ship.shp_type].m_cost * mlp->unit.ship.shp_effic >
+ mchr[mvs->unit.ship.shp_type].m_cost * mvs->unit.ship.shp_effic)
mvs = mlp;
}
return mvs;
next = qp->q_back;
mlp = (struct ulist *)qp;
if (wantflags &&
- (((struct mchrstr *)mlp->chrp)->m_flags & wantflags) != wantflags)
+ (mchr[mlp->unit.ship.shp_type].m_flags & wantflags) != wantflags)
continue;
if (nowantflags &&
- ((struct mchrstr *)mlp->chrp)->m_flags & nowantflags)
+ mchr[mlp->unit.ship.shp_type].m_flags & nowantflags)
continue;
hard = shp_hardtarget(&mlp->unit.ship);
if (hard < easiest)
shp_missile_interdiction(struct emp_qelem *list, coord newx, coord newy,
natid victim)
{
- int dam;
- int twotries;
+ int dam, sublaunch;
int stopping = 0;
struct emp_qelem msl_list, *qp, *newqp;
+ struct plist *plp;
struct ulist *mvs;
- char what[512];
+
+ mvs = most_valuable_ship(list, newx, newy);
+ if (!mvs)
+ return 0;
msl_sel(&msl_list, newx, newy, victim, P_T | P_MAR, 0, MI_INTERDICT);
- twotries = 0;
- while (!QEMPTY(&msl_list) && (mvs = most_valuable_ship(list))) {
- sprintf(what, "%s", prship(&mvs->unit.ship));
- dam = msl_launch_mindam(&msl_list, newx, newy,
- shp_hardtarget(&mvs->unit.ship),
- EF_SHIP, 1, what, victim, MI_INTERDICT);
- if (dam) {
- mpr(victim,
- "missile interdiction mission does %d damage to %s!\n",
- dam, what);
- shp_damage_one(mvs, dam);
- twotries = 0;
- stopping |= 1;
- } else if (++twotries >= 2) {
- break;
+ for (qp = msl_list.q_back; qp != &msl_list; qp = newqp) {
+ newqp = qp->q_back;
+ plp = (struct plist *)qp;
+
+ if (mvs && mission_pln_equip(plp, NULL, 'p') >= 0) {
+ if (msl_launch(&plp->plane, EF_SHIP, prship(&mvs->unit.ship),
+ newx, newy, victim, &sublaunch) < 0)
+ goto use_up_msl;
+ stopping = 1;
+ if (msl_hit(&plp->plane,
+ shp_hardtarget(&mvs->unit.ship), EF_SHIP,
+ N_SHP_MISS, N_SHP_SMISS, sublaunch, victim)) {
+ dam = pln_damage(&plp->plane, 'p', 1);
+ mpr(victim,
+ "missile interdiction mission does %d damage to %s!\n",
+ dam, prship(&mvs->unit.ship));
+ shp_damage_one(mvs, dam);
+ } else {
+ dam = pln_damage(&plp->plane, 'p', 0);
+ collateral_damage(newx, newy, dam);
+ }
+ mvs = most_valuable_ship(list, newx, newy);
+ use_up_msl:
+ plp->plane.pln_effic = 0;
+ putplane(plp->plane.pln_uid, &plp->plane);
}
- }
- qp = msl_list.q_forw;
- while (qp != msl_list.q_forw) {
- newqp = qp->q_forw;
emp_remque(qp);
free(qp);
- qp = newqp;
}
return stopping;
for (qp = list->q_back; qp != list; qp = next) {
next = qp->q_back;
mlp = (struct ulist *)qp;
- if (((struct mchrstr *)mlp->chrp)->m_flags & M_SUB)
+ if (mchr[mlp->unit.ship.shp_type].m_flags & M_SUB)
continue;
if (natp->nat_flags & NF_COASTWATCH)
wu(0, sectp->sct_own,
struct nstr_sect ns;
struct sctstr fsect;
int trange, range;
- double guneff;
- int shell, gun;
int dam;
+ int stopping = 0;
int totdam = 0;
signed char notified[MAXNOC];
int i;
/* Inform neutral and worse */
for (i = 0; i < MAXNOC; ++i) {
- if (getrel(getnatp(i), victim) <= NEUTRAL)
+ if (relations_with(i, victim) <= NEUTRAL)
notified[i] = 0;
else
notified[i] = 1;
return 0; /* Only coastwatch notify in nofortfire */
/* Only fire at Hostile ships */
for (i = 0; i < MAXNOC; ++i) {
- if (getrel(getnatp(i), victim) >= NEUTRAL)
+ if (relations_with(i, victim) >= NEUTRAL)
notified[i] = 0;
}
snxtsct_dist(&ns, newx, newy, fort_max_interdiction_range);
while (nxtsct(&ns, &fsect)) {
if (!notified[fsect.sct_own])
continue;
- gun = fsect.sct_item[I_GUN];
- if (gun < 1)
- continue;
range = roundrange(fortrange(&fsect));
trange = mapdist(newx, newy, fsect.sct_x, fsect.sct_y);
if (trange > range)
continue;
- if (fsect.sct_item[I_MILIT] < 5)
- continue;
- shell = fsect.sct_item[I_SHELL];
- if (shell < 1)
- shell += supply_commod(fsect.sct_own, fsect.sct_x, fsect.sct_y,
- I_SHELL, 1);
- if (shell < 1)
- continue;
- shell--;
- fsect.sct_item[I_SHELL] = shell;
+ dam = fort_fire(&fsect);
putsect(&fsect);
- if (gun > 7)
- gun = 7;
- guneff = landgun((int)fsect.sct_effic, gun);
- dam = (int)guneff;
+ if (dam < 0)
+ continue;
+ stopping = 1;
totdam += dam;
mpr(victim, "Incoming fire does %d damage!\n", dam);
-/*
- mpr(victim, "%s fires at you for %d!\n",
- xyas(fsect.sct_x,fsect.sct_y,victim),
- dam);
-*/
+#if 0
+ mpr(victim, "%s fires at you for %d!\n",
+ xyas(fsect.sct_x, fsect.sct_y, victim), dam);
+#endif
wu(0, fsect.sct_own,
"%s fires at %s ships in %s for %d!\n",
xyas(fsect.sct_x, fsect.sct_y,
nreport(fsect.sct_own, N_SHP_SHELL, victim, 1);
}
if (totdam > 0)
- return shp_damage(list, totdam, 0, M_SUB, newx, newy);
- return 0;
+ shp_damage(list, totdam, 0, M_SUB, newx, newy);
+ return stopping;
+}
+
+static int
+shp_mission_interdiction(struct emp_qelem *list, coord x, coord y,
+ natid victim, int subs)
+{
+ char *what = subs ? "subs" : "ships";
+ int wantflags = subs ? M_SUB : 0;
+ int nowantflags = subs ? 0 : M_SUB;
+ int mission = subs ? MI_SINTERDICT : MI_INTERDICT;
+ int dam;
+
+ dam = unit_interdict(x, y, victim, what,
+ shp_easiest_target(list, wantflags, nowantflags),
+ mission);
+ if (dam >= 0)
+ shp_damage(list, dam, wantflags, nowantflags, x, y);
+ return dam >= 0;
}
static int
stopping |= shp_fort_interdiction(list, newx, newy, victim);
if (shp_contains(list, newx, newy, 0, M_SUB)) {
- stopping |=
- shp_damage(list,
- unit_interdict(newx, newy, victim, "ships",
- shp_easiest_target(list, 0, M_SUB),
- MI_INTERDICT),
- 0, M_SUB, newx, newy);
- if (most_valuable_ship(list)) {
- stopping |=
- shp_missile_interdiction(list, newx, newy, victim);
- }
+ stopping |= shp_mission_interdiction(list, newx, newy, victim, 0);
+ stopping |= shp_missile_interdiction(list, newx, newy, victim);
}
}
- if (shp_contains(list, newx, newy, M_SUB, 0)) {
- stopping |=
- shp_damage(list,
- unit_interdict(newx, newy, victim, "subs",
- shp_easiest_target(list, M_SUB, 0),
- MI_SINTERDICT),
- M_SUB, 0, newx, newy);
- }
+ if (shp_contains(list, newx, newy, M_SUB, 0))
+ stopping |= shp_mission_interdiction(list, newx, newy, victim, 1);
return stopping;
}
int vis, onsea;
struct mchrstr *mcp = mchr + sp->shp_type;
- vis = sp->shp_visib;
+ vis = shp_visib(sp);
getsect(sp->shp_x, sp->shp_y, §);
onsea = sect.sct_type == SCT_WATER;
if (mcp->m_flags & M_SUB)
vis *= 4;
return (int)((sp->shp_effic / 100.0) *
- (20 + sp->shp_speed * onsea / 2.0 - vis));
+ (20 + shp_speed(sp) * onsea / 2.0 - vis));
}
static int
-shp_hit_mine(struct shpstr *sp, struct mchrstr *mcp)
+shp_hit_mine(struct shpstr *sp)
{
double m;
nreport(sp->shp_own, N_HIT_MINE, 0, 1);
m = MINE_DAMAGE();
- if (mcp->m_flags & M_SWEEP)
+ if (mchr[sp->shp_type].m_flags & M_SWEEP)
m /= 2.0;
shipdamage(sp, ldround(m, 1));
return (int)m;
}
-void
-shp_view(struct emp_qelem *list)
-{
- struct sctstr sect;
- struct emp_qelem *qp;
- struct emp_qelem *next;
- struct ulist *mlp;
-
- for (qp = list->q_back; qp != list; qp = next) {
- next = qp->q_back;
- mlp = (struct ulist *)qp;
- getsect(mlp->unit.ship.shp_x, mlp->unit.ship.shp_y, §);
- if (((struct mchrstr *)mlp->chrp)->m_flags & M_FOOD)
- mpr(mlp->unit.ship.shp_own, "[fert:%d] ", sect.sct_fertil);
- if (((struct mchrstr *)mlp->chrp)->m_flags & M_OIL)
- mpr(mlp->unit.ship.shp_own, "[oil:%d] ", sect.sct_oil);
- mpr(mlp->unit.ship.shp_own, "%s @ %s %d%% %s\n",
- prship(&mlp->unit.ship),
- xyas(mlp->unit.ship.shp_x, mlp->unit.ship.shp_y, player->cnum),
- sect.sct_effic, dchr[sect.sct_type].d_name);
- }
-}
-
int
-shp_nav_one_sector(struct emp_qelem *list, int dir, natid actor,
- int together)
+shp_nav_dir(struct emp_qelem *list, int dir, natid actor)
{
struct sctstr sect;
struct emp_qelem *qp;
struct emp_qelem *next;
struct ulist *mlp;
- struct emp_qelem done;
coord dx;
coord dy;
coord newx;
coord newy;
- int stopping = 0;
+ int move;
+ enum shp_stuck stuck;
double mobcost;
- double tech; /* for mapping */
- double tf; /* for mapping */
- char dp[80];
- int navigate;
- if (dir <= DIR_STOP || dir >= DIR_VIEW) {
- shp_put(list, actor);
+ if (CANT_HAPPEN(QEMPTY(list)))
+ return 1;
+
+ if (dir <= DIR_STOP || dir > DIR_LAST) {
+ CANT_HAPPEN(dir != DIR_STOP);
+ shp_nav_put(list, actor);
return 1;
}
dx = diroff[dir][0];
dy = diroff[dir][1];
+
+ mlp = (struct ulist *)list->q_back;
+ newx = xnorm(mlp->unit.ship.shp_x + dx);
+ newy = ynorm(mlp->unit.ship.shp_y + dy);
+ getsect(newx, newy, §);
+
+ if (sect.sct_own && relations_with(sect.sct_own, actor) < FRIENDLY) {
+ mpr(actor, "can't go to %s\n", xyas(newx, newy, actor));
+ return 1;
+ }
+
+ move = 0;
for (qp = list->q_back; qp != list; qp = next) {
next = qp->q_back;
mlp = (struct ulist *)qp;
- newx = xnorm(mlp->unit.ship.shp_x + dx);
- newy = ynorm(mlp->unit.ship.shp_y + dy);
- getsect(newx, newy, §);
- navigate = shp_check_nav(§, &mlp->unit.ship);
- if (navigate != CN_NAVIGABLE ||
- (sect.sct_own && actor != sect.sct_own &&
- getrel(getnatp(sect.sct_own), actor) < FRIENDLY)) {
- if (dchr[sect.sct_type].d_nav == NAV_CANAL &&
- !(((struct mchrstr *)mlp->chrp)->m_flags & M_CANAL) &&
- navigate == CN_LANDLOCKED)
- sprintf(dp,
- "is too large to fit into the canal system at %s",
- xyas(newx, newy, actor));
- else
- sprintf(dp, "can't go to %s", xyas(newx, newy, actor));
- if (together) {
- mpr(actor, "%s\n", dp);
- return 2;
- } else {
- shp_mess(dp, mlp);
- continue;
- }
+ switch (shp_check_nav(&mlp->unit.ship, §)) {
+ case SHP_STUCK_NOT:
+ move = 1;
+ break;
+ case SHP_STUCK_CANAL:
+ break;
+ default:
+ CANT_REACH();
+ /* fall through */
+ case SHP_STUCK_CONSTRUCTION:
+ case SHP_STUCK_IMPASSABLE:
+ mpr(actor, "can't go to %s\n", xyas(newx, newy, actor));
+ return 1;
+ }
+ }
+ if (!move) {
+ mpr(actor, "is too large to fit into the canal system at %s\n",
+ xyas(newx, newy, actor));
+ return 1;
+ }
+
+ for (qp = list->q_back; qp != list; qp = next) {
+ next = qp->q_back;
+ mlp = (struct ulist *)qp;
+ stuck = shp_check_nav(&mlp->unit.ship, §);
+ if (stuck == SHP_STUCK_CANAL) {
+ mpr(actor,
+ "%s is too large to fit into the canal system at %s"
+ " & stays in %s\n",
+ prship(&mlp->unit.ship), xyas(newx, newy, actor),
+ xyas(mlp->unit.ship.shp_x, mlp->unit.ship.shp_y, actor));
+ shp_nav_put_one(mlp);
+ continue;
+ } else if (CANT_HAPPEN(stuck != SHP_STUCK_NOT)) {
+ mpr(actor, "%s can't go to %s & stays in %s\n",
+ prship(&mlp->unit.ship), xyas(newx, newy, actor),
+ xyas(mlp->unit.ship.shp_x, mlp->unit.ship.shp_y, actor));
+ shp_nav_put_one(mlp);
+ continue;
}
if (mlp->mobil <= 0.0) {
- shp_mess("is out of mobility", mlp);
+ mpr(actor, "%s is out of mobility & stays in %s\n",
+ prship(&mlp->unit.ship),
+ xyas(mlp->unit.ship.shp_x, mlp->unit.ship.shp_y, actor));
+ shp_nav_put_one(mlp);
continue;
}
mobcost = shp_mobcost(&mlp->unit.ship);
}
mlp->unit.ship.shp_mobil = (int)mlp->mobil;
putship(mlp->unit.ship.shp_uid, &mlp->unit.ship);
-
- /* Now update the map for this ship */
- tech = techfact(mlp->unit.ship.shp_tech,
- ((struct mchrstr *)mlp->chrp)->m_vrnge);
- if (((struct mchrstr *)mlp->chrp)->m_flags & M_SONAR)
- tf = techfact(mlp->unit.ship.shp_tech, 1.0);
- else
- tf = 0.0;
- radmapupd(mlp->unit.ship.shp_own,
- mlp->unit.ship.shp_x, mlp->unit.ship.shp_y,
- (int)mlp->unit.ship.shp_effic, (int)tech, tf);
}
- if (QEMPTY(list))
- return stopping;
- stopping |= shp_sweep(list, 0, 0, actor);
+
+ return 0;
+}
+
+int
+shp_nav_gauntlet(struct emp_qelem *list, int interdict, natid actor)
+{
+ struct ulist *mlp = (struct ulist *)list->q_back;
+ coord newx = mlp->unit.ship.shp_x;
+ coord newy = mlp->unit.ship.shp_y;
+ int stopping;
+
+ stopping = shp_sweep(list, 0, 0, actor);
if (QEMPTY(list))
return stopping;
stopping |= shp_check_mines(list);
if (QEMPTY(list))
return stopping;
-
- /* interdict ships sector by sector */
- emp_initque(&done);
- while (!QEMPTY(list)) {
- mlp = (struct ulist *)list->q_back;
- newx = mlp->unit.ship.shp_x;
- newy = mlp->unit.ship.shp_y;
+ if (interdict)
stopping |= shp_interdict(list, newx, newy, actor);
- /* move survivors in this sector to done */
- for (qp = list->q_back; qp != list; qp = next) {
- next = qp->q_back;
- mlp = (struct ulist *)qp;
- if (mlp->unit.ship.shp_x == newx &&
- mlp->unit.ship.shp_y == newy) {
- emp_remque(qp);
- emp_insque(qp, &done);
- }
- }
- }
- /* assign surviving ships back to list */
- emp_insque(list, &done);
- emp_remque(&done);
return stopping;
}
/*
- * shp_miss_defence
- * Check for incoming missiles with a P_MAR flag.
+ * shp_miss_defence
+ * Check for incoming missiles with a P_MAR flag.
* Return True=1 if the missile was shotdown.
* Or False=0
- *
+ *
* Chad Zabel, July 95
*/
{
struct nstr_item ni;
struct shpstr ship;
- int hitchance;
- int shell;
+ int hitchance, hit;
double gun, eff, teff;
snxtitem_dist(&ni, EF_SHIP, dx, dy, 1);
if (!(mchr[(int)ship.shp_type].m_flags & M_ANTIMISSILE))
continue;
- if (getrel(getnatp(ship.shp_own), bombown) >= NEUTRAL)
+ if (relations_with(ship.shp_own, bombown) >= NEUTRAL)
continue;
if (ship.shp_effic < 60)
continue;
- shell = ship.shp_item[I_SHELL];
if (ship.shp_item[I_MILIT] < 1) /* do we have mil? */
continue;
- if (shell < 2) { /* do we need shells */
- shell += supply_commod(ship.shp_own, ship.shp_x, ship.shp_y,
- I_SHELL, 2);
- if (shell < 2)
- continue;
- }
if (ship.shp_item[I_GUN] < 1) /* we need at least 1 gun */
continue;
+ if (!shp_supply(&ship, I_SHELL, 2))
+ continue;
+ ship.shp_item[I_SHELL] -= 2;
+ putship(ship.shp_uid, &ship);
/* now calculate the odds */
- gun = MIN(ship.shp_item[I_GUN], ship.shp_glim);
+ gun = shp_usable_guns(&ship);
eff = ship.shp_effic / 100.0;
teff = ship.shp_tech / (ship.shp_tech + 200.0);
/* raise 4.5 for better interception -KHS */
hitchance = (int)(gun * eff * teff * 4.5) - hardtarget;
- if (hitchance < 0)
- hitchance = 0;
- if (hitchance > 100)
- hitchance = 100;
+ hitchance = LIMIT_TO(hitchance, 0, 100);
+ hit = pct_chance(hitchance);
- mpr(bombown, "%s anti-missile system activated...",
- cname(ship.shp_own));
+ mpr(bombown, "%s anti-missile system activated...%s\n",
+ cname(ship.shp_own),
+ hit ? "KABOOOM!! Missile destroyed\n"
+ : "SWOOSH!! anti-missile system failed!!");
mpr(ship.shp_own, "Ship #%i anti-missile system activated!\n",
ship.shp_uid);
- mpr(ship.shp_own, "%d%% hitchance...", hitchance);
- /* use ammo */
- ship.shp_item[I_SHELL] = shell - 2;
- putship(ship.shp_uid, &ship);
+ mpr(ship.shp_own, "%d%% hitchance...%s\n", hitchance,
+ hit ? "KABOOOM!! Incoming missile destroyed!\n"
+ : "SWOOSH!! Missile evades anti-missile systems\n");
- if (roll(100) <= hitchance) {
- mpr(bombown, "KABOOOM!! Missile destroyed\n\n");
- mpr(ship.shp_own,
- "KABOOOM!! Incoming missile destroyed!\n\n");
+ if (hit)
return 1;
- } else {
- mpr(bombown, "SWOOSH!! anti-missile system failed!!\n");
- mpr(ship.shp_own,
- "SWOOSH!! Missile evades anti-missile systems\n\n");
- }
}
return 0; /* all attempts failed */
}
-char *
-shp_path(int together, struct shpstr *shp, char *buf)
-{
- coord destx;
- coord desty;
- struct sctstr d_sect;
- char *cp;
-
- if (!sarg_xy(buf, &destx, &desty))
- return 0;
- if (!together) {
- mpr(shp->shp_own,
- "Cannot go to a destination sector if not all starting in the same sector\n");
- return 0;
- }
- if (!getsect(destx, desty, &d_sect)) {
- mpr(shp->shp_own, "%d,%d is not a sector\n", destx, desty);
- return 0;
- }
-
- cp = BestShipPath(buf, shp->shp_x, shp->shp_y,
- d_sect.sct_x, d_sect.sct_y, player->cnum);
- if (!cp || shp->shp_mobil <= 0) {
- mpr(shp->shp_own, "Can't get to '%s' right now.\n",
- xyas(d_sect.sct_x, d_sect.sct_y, player->cnum));
- return 0;
- }
- return cp;
-}
/* Fire missiles at a ship which has fired shells */
void
char buf[512];
emp_initque(&list);
-
- mlp = malloc(sizeof(struct ulist));
- mlp->chrp = (struct empobj_chr *)&mchr[(int)sp->shp_type];
- mlp->unit.ship = *sp;
- mlp->mobil = sp->shp_mobil;
- emp_insque(&mlp->queue, &list);
+ mlp = shp_insque(sp, &list);
sprintf(buf, "%s", prship(&mlp->unit.ship));
eff = sp->shp_effic;
- if (most_valuable_ship(&list)) {
- shp_missile_interdiction(&list, sp->shp_x, sp->shp_y, sp->shp_own);
- getship(sp->shp_uid, sp);
-
- if (!sp->shp_own) {
- wu(0, victim,
- "missiles launched in defense did 100%% damage to %s\n",
- buf);
- wu(0, victim, "%s sunk!\n", buf);
- } else if (eff > 0 && sp->shp_effic < eff) {
- wu(0, victim,
- "missiles launched in defense did %d%% damage to %s\n",
- 100 * (eff - sp->shp_effic) / eff, buf);
- }
+ shp_missile_interdiction(&list, sp->shp_x, sp->shp_y, sp->shp_own);
+ getship(sp->shp_uid, sp);
+
+ if (!sp->shp_own) {
+ wu(0, victim,
+ "missiles launched in defense did 100%% damage to %s\n",
+ buf);
+ wu(0, victim, "%s sunk!\n", buf);
+ } else if (eff > 0 && sp->shp_effic < eff) {
+ wu(0, victim,
+ "missiles launched in defense did %d%% damage to %s\n",
+ 100 * (eff - sp->shp_effic) / eff, buf);
}
if (!QEMPTY(&list))
free(mlp);
double
shp_mobcost(struct shpstr *sp)
{
- return speed_factor(sp->shp_effic * 0.01 * sp->shp_speed,
+ return speed_factor(sp->shp_effic * 0.01 * shp_speed(sp),
sp->shp_tech);
}
shp_set_tech(struct shpstr *sp, int tlev)
{
struct mchrstr *mcp = mchr + sp->shp_type;
- int tech_diff = tlev - mcp->m_tech;
- if (CANT_HAPPEN(tech_diff < 0)) {
- tlev -= tech_diff;
- tech_diff = 0;
- }
+ if (CANT_HAPPEN(tlev < mcp->m_tech))
+ tlev = mcp->m_tech;
sp->shp_tech = tlev;
- sp->shp_armor = (short)SHP_DEF(mcp->m_armor, tech_diff);
- sp->shp_speed = (short)SHP_SPD(mcp->m_speed, tech_diff);
- sp->shp_visib = (short)SHP_VIS(mcp->m_visib, tech_diff);
- sp->shp_frnge = (short)SHP_RNG(mcp->m_frnge, tech_diff);
- sp->shp_glim = (short)SHP_FIR(mcp->m_glim, tech_diff);
}
projects / empserver / blobdiff