183 lines
7 KiB
C
183 lines
7 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2020, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure, Markus Armbruster
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*
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* Empire is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* ---
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*
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* See files README, COPYING and CREDITS in the root of the source
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* tree for related information and legal notices. It is expected
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* that future projects/authors will amend these files as needed.
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*
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* ---
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*
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* ship.h: Definitions for things having to do with ships
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*
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* Known contributors to this file:
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* Dave Pare
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* Thomas Ruschak, 1992
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* Ken Stevens, 1995
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* Steve McClure, 1998
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* Markus Armbruster, 2004-2016
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*/
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#ifndef SHIP_H
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#define SHIP_H
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#include "file.h"
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#include "item.h"
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#include "retreat.h"
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#include "types.h"
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#define SHP_TYPE_MAX 46
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#define SHIP_MINEFF 20
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#define MAXSHPNAMLEN 24
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struct shpstr {
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/* initial part must match struct empobj */
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signed ef_type: 8;
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unsigned shp_seqno: 12;
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unsigned shp_generation: 12;
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int shp_uid; /* unit it (ship #) */
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time_t shp_timestamp; /* Last time this ship was touched. */
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natid shp_own; /* owner's country num */
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coord shp_x; /* x location in abs coords */
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coord shp_y; /* y location in abs coords */
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signed char shp_type; /* index in mchr[] */
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signed char shp_effic; /* 0% to 100% */
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signed char shp_mobil; /* mobility units */
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unsigned char shp_off; /* repairs stopped? */
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short shp_tech; /* tech level ship was built at */
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char shp_fleet; /* group membership */
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coord shp_opx, shp_opy; /* Op sector coords */
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short shp_mission; /* mission code */
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short shp_radius; /* mission radius */
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/* end of part matching struct empobj */
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short shp_item[I_MAX+1]; /* amount of items on board */
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short shp_pstage; /* plague stage */
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short shp_ptime; /* how many ETUs remain in this stage */
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short shp_access; /* Last tick mob was updated (MOB_ACCESS) */
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char shp_name[MAXSHPNAMLEN]; /* name set with the "name" command */
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coord shp_orig_x;
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coord shp_orig_y; /* Where we were built */
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natid shp_orig_own; /* Who built us */
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int shp_rflags; /* When do I retreat? */
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char shp_rpath[RET_LEN]; /* retreat path */
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};
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struct mchrstr {
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short m_item[I_MAX+1]; /* load limit */
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int m_armor; /* how well armored it is */
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int m_speed; /* how fast it can go */
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int m_visib; /* how well it can be seen */
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int m_vrnge; /* how well it can see */
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int m_frnge; /* how far it can fire */
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int m_glim; /* how many guns it can fire */
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unsigned char m_nxlight; /* maximum number of xlight planes */
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unsigned char m_nchoppers; /* maximum number of choppers */
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char *m_name; /* full name of type of ship */
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short m_mat[I_MAX+1]; /* materials to build 100% */
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/* only I_LCM and I_HCM non-zero */
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int m_bwork; /* work to build 100% */
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int m_tech; /* tech required to build */
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int m_cost; /* how much it costs to build */
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int m_flags; /* what special things can this ship do */
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unsigned char m_nplanes; /* maximum number of planes this ship holds */
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unsigned char m_nland; /* maximum number of units this ship holds */
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signed char m_type; /* index in mchr[] */
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};
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#define M_FOOD bit(0) /* catch that fish! */
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#define M_TORP bit(1) /* fire torpedoes */
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#define M_DCH bit(2) /* drop depth charges on subs */
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#define M_FLY bit(3) /* launch and recover planes */
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#define M_MSL bit(4) /* launch missiles */
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#define M_OIL bit(5) /* drill for oil */
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#define M_SONAR bit(6) /* locate submarines */
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#define M_MINE bit(7) /* drop mines */
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#define M_SWEEP bit(8) /* clean up the mines */
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#define M_SUB bit(9) /* a submarine */
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/* unused bit(10) */
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#define M_LAND bit(11) /* allows full landing ability */
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#define M_SUBT bit(12) /* allows torping of other subs */
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#define M_TRADE bit(13) /* is a trade ship */
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#define M_SEMILAND bit(14) /* can land 1/4 */
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/* unused bit(15) */
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/* unused bit(16) */
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/* unused bit(17) */
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#define M_SUPPLY bit(18) /* Can supply units/sects/ships */
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#define M_CANAL bit(19) /* Can navigate a canal (BIG CITY) */
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#define M_ANTIMISSILE bit(20) /* Shoot down missile */
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#define getship(n, p) ef_read(EF_SHIP, (n), (p))
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#define putship(n, p) ef_write(EF_SHIP, (n), (p))
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#define getshipp(n) ((struct shpstr *)ef_ptr(EF_SHIP, (n)))
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extern struct mchrstr mchr[SHP_TYPE_MAX + 2];
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enum {
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SHP_AIROPS_EFF = 50, /* min. efficiency for air ops */
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SHP_TORP_SHELLS = 3 /* number of shells used by a torpedo */
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};
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/* Whether and why a ship is stuck in a sector */
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enum shp_stuck {
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SHP_STUCK_NOT, /* not stuck */
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SHP_STUCK_CONSTRUCTION, /* sector not efficient enough */
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SHP_STUCK_CANAL, /* ship lacks M_CANAL */
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SHP_STUCK_IMPASSABLE /* sector type not navigable */
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};
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extern int m_armor(struct mchrstr *, int);
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extern int m_speed(struct mchrstr *, int);
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extern int m_visib(struct mchrstr *, int);
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extern int m_frnge(struct mchrstr *, int);
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extern int m_glim(struct mchrstr *, int);
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extern int shp_armor(struct shpstr *);
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extern int shp_speed(struct shpstr *);
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extern int shp_visib(struct shpstr *);
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extern int shp_frnge(struct shpstr *);
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extern int shp_glim(struct shpstr *);
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extern int shp_nplane(struct shpstr *, int *, int *, int *);
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extern int shp_nland(struct shpstr *);
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extern int shp_dchrg(struct shpstr *);
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extern int shp_fire(struct shpstr *);
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extern int shp_torp(struct shpstr *, int);
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extern double shp_fire_range(struct shpstr *);
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extern int shp_usable_guns(struct shpstr *);
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extern double shp_torp_hitchance(struct shpstr *, int);
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/* src/lib/subs/shpsub.c */
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extern int shp_may_nav(struct shpstr *, struct shpstr *, char *);
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extern void shp_sel(struct nstr_item *, struct emp_qelem *);
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extern struct ulist *shp_insque(struct shpstr *, struct emp_qelem *);
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extern void shp_nav_stay_behind(struct emp_qelem *, natid);
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extern void shp_nav_put(struct emp_qelem *, natid);
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extern int shp_sweep(struct emp_qelem *, int, int, natid);
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extern enum shp_stuck shp_check_nav(struct shpstr *, struct sctstr *);
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extern int sect_has_dock(struct sctstr *);
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extern int shp_hardtarget(struct shpstr *);
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extern int shp_nav_dir(struct emp_qelem *, int, natid);
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extern int shp_nav_gauntlet(struct emp_qelem *, int, natid);
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extern int shp_missile_defense(coord, coord, natid, int);
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extern void shp_missdef(struct shpstr *, natid);
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extern double shp_mobcost(struct shpstr *);
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extern void shp_set_tech(struct shpstr *, int);
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#endif
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