1 /* 2 * Empire - A multi-player, client/server Internet based war game. 3 * Copyright (C) 1986-2021, Dave Pare, Jeff Bailey, Thomas Ruschak, 4 * Ken Stevens, Steve McClure, Markus Armbruster 5 * 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. 10 * 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. 15 * 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/>. 18 * 19 * --- 20 * 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. 24 * 25 * --- 26 * 27 * land.h: Definitions for land units 28 * 29 * Known contributors to this file: 30 * Thomas Ruschak, 1992 31 * Ken Stevens, 1995 32 * Steve McClure, 1998 33 * Markus Armbruster, 2004-2020 34 */ 35 36 #ifndef LAND_H 37 #define LAND_H 38 39 #include "file.h" 40 #include "item.h" 41 #include "retreat.h" 42 #include "types.h" 43 44 #define LAND_MINEFF 10 45 #define LAND_MINFIREEFF 40 /* arty must be this effic to fire */ 46 47 struct lndstr { 48 /* initial part must match struct empobj */ 49 signed ef_type: 8; 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) */ 78 }; 79 80 struct lchrstr { 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[] */ 104 }; 105 106 /* 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 */ 119 120 /* Chance to detect L_SPY unit (percent) */ 121 #define LND_SPY_DETECT_CHANCE(eff) ((110-(eff))/100.0) 122 123 #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))) 126 127 #define LCHR_SZ 128 128 extern struct lchrstr lchr[LCHR_SZ]; 129 130 enum { 131 LND_AIROPS_EFF = 50 /* min. efficiency for air ops */ 132 }; 133 134 enum lnd_stuck { 135 LND_STUCK_NOT, /* not stuck */ 136 LND_STUCK_NO_RAIL, /* land needs rail */ 137 LND_STUCK_IMPASSABLE /* sector type not marchable */ 138 }; 139 140 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 *); 157 158 /* 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 *); 165 166 extern int lnd_fire(struct lndstr *); 167 extern int lnd_sabo(struct lndstr *, short *); 168 extern double lnd_fire_range(struct lndstr *); 169 170 /* 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 *); 181 182 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); 203 204 #endif 205