2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2020, 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 * land.h: Definitions for land units
29 * Known contributors to this file:
30 * Thomas Ruschak, 1992
33 * Markus Armbruster, 2004-2020
44 #define LAND_MINEFF 10
45 #define LAND_MINFIREEFF 40 /* arty must be this effic to fire */
48 /* initial part must match struct empobj */
50 unsigned lnd_seqno: 12;
51 unsigned lnd_generation: 12;
52 int lnd_uid; /* unit ID (land #) */
53 time_t lnd_timestamp; /* Last time this unit was touched */
54 natid lnd_own; /* owner's country num */
55 coord lnd_x; /* x location in abs coords */
56 coord lnd_y; /* y location in abs coords */
57 signed char lnd_type; /* index in lchr[] */
58 signed char lnd_effic; /* 0% to 100% */
59 signed char lnd_mobil; /* mobility units */
60 unsigned char lnd_off; /* repairs stopped? */
61 short lnd_tech; /* tech level ship was built at */
62 char lnd_army; /* group membership */
63 coord lnd_opx, lnd_opy; /* Op sector coords */
64 short lnd_mission; /* mission code */
65 short lnd_radius; /* mission radius */
66 /* end of part matching struct empobj */
67 int lnd_ship; /* UID of transporting ship, or -1 */
68 signed char lnd_harden; /* fortification */
69 short lnd_retreat; /* retreat percentage */
70 int lnd_rflags; /* When do I retreat? */
71 char lnd_rpath[RET_LEN]; /* retreat path */
72 unsigned char lnd_scar; /* how experienced the unit is (not used) */
73 short lnd_item[I_MAX+1]; /* amount of items on board */
74 short lnd_pstage; /* plague stage */
75 short lnd_ptime; /* how many ETUs remain in this stage */
76 int lnd_land; /* UID of transporting land unit, or -1 */
77 short lnd_access; /* Last tick mob was updated (MOB_ACCESS) */
81 short l_item[I_MAX+1]; /* load limit */
82 char *l_name; /* full name of type of land unit */
83 short l_mat[I_MAX+1]; /* materials to build 100% */
84 /* only I_LCM and I_HCM non-zero */
85 int l_bwork; /* work to build 100% */
86 int l_tech; /* tech required to build */
87 int l_cost; /* how much it costs to build */
88 float l_att; /* attack multiplier */
89 float l_def; /* defense multiplier */
90 int l_vul; /* vulnerability (0-100) */
91 int l_spd; /* speed */
92 int l_vis; /* visibility */
93 int l_spy; /* Seeing distance */
94 int l_rad; /* reaction radius */
95 int l_frg; /* firing range */
96 int l_acc; /* firing accuracy */
97 int l_dam; /* # of guns firing */
98 int l_ammo; /* firing ammu used per shot */
99 int l_aaf; /* AA fire */
100 int l_flags; /* what special things can this unit do */
101 unsigned char l_nxlight; /* maximum number of xlight planes */
102 unsigned char l_nland; /* maximum number of units */
103 signed char l_type; /* index in lchr[] */
106 /* Land unit ability flags */
107 #define L_ENGINEER bit(1) /* Do engineering things */
108 #define L_SUPPLY bit(2) /* supply other units/sects */
109 #define L_SECURITY bit(3) /* anti-terrorist troops */
110 #define L_LIGHT bit(4) /* can go on ships */
111 #define L_MARINE bit(5) /* marine units, good at assaulting */
112 #define L_RECON bit(6) /* recon units, good at spying */
113 #define L_RADAR bit(7) /* radar unit */
114 #define L_ASSAULT bit(8) /* can assault */
115 #define L_FLAK bit(9) /* flak unit */
116 #define L_SPY bit(10) /* spy unit - way cool */
117 #define L_TRAIN bit(11) /* train unit - neato */
118 #define L_HEAVY bit(12) /* heavy unit - can't go on trains */
120 /* Chance to detect L_SPY unit (percent) */
121 #define LND_SPY_DETECT_CHANCE(eff) ((110-(eff))/100.0)
123 #define getland(n, p) ef_read(EF_LAND, (n), (p))
124 #define putland(n, p) ef_write(EF_LAND, (n), (p))
125 #define getlandp(n) ((struct lndstr *)ef_ptr(EF_LAND, (n)))
128 extern struct lchrstr lchr[LCHR_SZ];
131 LND_AIROPS_EFF = 50 /* min. efficiency for air ops */
135 LND_STUCK_NOT, /* not stuck */
136 LND_STUCK_NO_RAIL, /* land needs rail */
137 LND_STUCK_IMPASSABLE /* sector type not marchable */
140 extern float l_att(struct lchrstr *, int);
141 extern float l_def(struct lchrstr *, int);
142 extern int l_vul(struct lchrstr *, int);
143 extern int l_spd(struct lchrstr *, int);
144 extern int l_frg(struct lchrstr *, int);
145 extern int l_acc(struct lchrstr *, int);
146 extern int l_dam(struct lchrstr *, int);
147 extern int l_aaf(struct lchrstr *, int);
148 extern float lnd_att(struct lndstr *);
149 extern float lnd_def(struct lndstr *);
150 extern int lnd_vul(struct lndstr *);
151 extern int lnd_spd(struct lndstr *);
152 extern int lnd_vis(struct lndstr *);
153 extern int lnd_frg(struct lndstr *);
154 extern int lnd_acc(struct lndstr *);
155 extern int lnd_dam(struct lndstr *);
156 extern int lnd_aaf(struct lndstr *);
158 /* src/lib/common/cargo.c */
159 extern void lnd_carrier_change(struct lndstr *, int, int, int);
160 extern int lnd_first_on_ship(struct shpstr *);
161 extern int lnd_first_on_land(struct lndstr *);
162 extern int lnd_next_on_unit(int);
163 extern int lnd_nxlight(struct lndstr *);
164 extern int lnd_nland(struct lndstr *);
166 extern int lnd_fire(struct lndstr *);
167 extern int lnd_sabo(struct lndstr *, short *);
168 extern double lnd_fire_range(struct lndstr *);
170 /* src/lib/subs/lndsub.c */
171 extern int lnd_sweep(struct emp_qelem *, int, int, natid);
172 extern int lnd_interdict(struct emp_qelem *, coord, coord, natid);
173 extern int lnd_may_mar(struct lndstr *, struct lndstr *, char *);
174 extern void lnd_sel(struct nstr_item *, struct emp_qelem *);
175 extern struct ulist *lnd_insque(struct lndstr *, struct emp_qelem *);
176 extern int lnd_check_mines(struct emp_qelem *);
177 extern enum lnd_stuck lnd_check_mar(struct lndstr *, struct sctstr *);
178 extern double lnd_pathcost(struct lndstr *, double);
179 extern int lnd_mobtype(struct lndstr *);
180 extern double lnd_mobcost(struct lndstr *, struct sctstr *);
182 extern double attack_val(int, struct lndstr *);
183 extern double defense_val(struct lndstr *);
184 extern int lnd_reaction_range(struct lndstr *);
185 extern void lnd_print(natid, struct ulist *, char *);
186 extern int lnd_take_casualty(int, struct ulist *, int);
187 extern void lnd_submil(struct lndstr *, int);
188 extern void lnd_takemob(struct emp_qelem *, double);
189 extern int lnd_spyval(struct lndstr *);
190 extern void intelligence_report(natid, struct lndstr *, int, char *);
191 extern void lnd_mar_stay_behind(struct emp_qelem *, natid);
192 extern void lnd_mar_put(struct emp_qelem *, natid);
193 extern void lnd_put(struct emp_qelem *);
194 extern void lnd_put_one(struct ulist *);
195 extern int lnd_hardtarget(struct lndstr *);
196 extern int lnd_abandon_askyn(struct emp_qelem *);
197 extern int lnd_mar_dir(struct emp_qelem *, int, natid);
198 extern int lnd_mar_gauntlet(struct emp_qelem *, int, natid);
199 extern int lnd_support(natid, natid, coord, coord, int);
200 extern int lnd_can_attack(struct lndstr *);
201 extern int lnd_fortify(struct lndstr *lp, int hard_amt);
202 extern void lnd_set_tech(struct lndstr *, int);