2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2006, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure
6 * This program 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 2 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, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * See files README, COPYING and CREDITS in the root of the source
23 * tree for related information and legal notices. It is expected
24 * that future projects/authors will amend these files as needed.
28 * land.h: Definitions for land units
30 * Known contributors to this file:
31 * Thomas Ruschak, 1992
44 #define LND_TYPE_MAX 30
45 #define LAND_MINEFF 10
46 #define LAND_MINFIREEFF 40 /* arty must be this effic to fire */
49 /* initial part must match struct empobj */
51 natid lnd_own; /* owner's country num */
52 short lnd_uid; /* unit id (land unit) */
53 coord lnd_x; /* x location in abs coords */
54 coord lnd_y; /* y location in abs coords */
55 signed char lnd_type; /* index in lchr[] */
56 signed char lnd_effic; /* 0% to 100% */
57 signed char lnd_mobil; /* mobility units */
58 unsigned char lnd_off; /* repairs stopped? */
59 short lnd_tech; /* tech level ship was built at */
60 char lnd_army; /* group membership */
61 coord lnd_opx, lnd_opy; /* Op sector coords */
62 short lnd_mission; /* mission code */
63 short lnd_radius; /* mission radius */
64 /* end of part matching struct empobj */
65 signed char lnd_flags; /* unit flags (unused) */
66 short lnd_ship; /* pointer to transporting ship */
67 signed char lnd_harden; /* fortification */
68 short lnd_retreat; /* retreat percentage */
69 unsigned char lnd_fuel; /* How much fuel do we have */
70 unsigned char lnd_nxlight; /* How many xlight planes on board? */
71 int lnd_rflags; /* When do I retreat? */
72 char lnd_rpath[RET_LEN]; /* retreat path */
73 unsigned char lnd_rad_max; /* max radius for this unit */
74 unsigned char lnd_scar; /* how experienced the unit is (not used) */
75 short lnd_item[I_MAX+1]; /* amount of items on board */
76 short lnd_pstage; /* plague stage */
77 short lnd_ptime; /* how many etus remain in this stage */
78 short lnd_land; /* pointer to transporting unit */
79 unsigned char lnd_nland;
80 time_t lnd_access; /* Last time mob was updated (MOB_ACCESS) */
81 float lnd_att; /* attack multiplier */
82 float lnd_def; /* defense multiplier */
83 int lnd_vul; /* vulnerability (0-100) */
84 int lnd_spd; /* speed */
85 int lnd_vis; /* visibility */
86 int lnd_spy; /* Seeing distance */
87 int lnd_rad; /* reaction radius */
88 int lnd_frg; /* firing range */
89 int lnd_acc; /* firing accuracy */
90 int lnd_dam; /* # of guns firing */
91 int lnd_ammo; /* firing ammu used per shot */
92 int lnd_aaf; /* aa fire */
93 unsigned char lnd_fuelc; /* fuel capacity */
94 unsigned char lnd_fuelu; /* fuel used per 10 mob */
95 unsigned char lnd_maxlight; /* maximum number of xlight planes */
96 unsigned char lnd_maxland; /* maximum number of units */
97 time_t lnd_timestamp; /* Last time this unit was touched */
101 short l_item[I_MAX+1]; /* load limit */
102 char *l_name; /* full name of type of land unit */
103 int l_lcm; /* units of lcm to build */
104 int l_hcm; /* units of hcm to build */
105 int l_mil; /* how many mil it takes to build */
106 int l_gun; /* how many guns it takes to build (unused) */
107 int l_shell; /* #shells it takes to build (unused) */
108 int l_tech; /* tech required to build */
109 int l_cost; /* how much it costs to build */
110 float l_att; /* attack multiplier */
111 float l_def; /* defense multiplier */
112 int l_vul; /* vulnerability (0-100) */
113 int l_spd; /* speed */
114 int l_vis; /* visibility */
115 int l_spy; /* Seeing distance */
116 int l_rad; /* reaction radius */
117 int l_frg; /* firing range */
118 int l_acc; /* firing accuracy */
119 int l_dam; /* # of guns firing */
120 int l_ammo; /* firing ammu used per shot */
121 int l_aaf; /* aa fire */
122 unsigned char l_fuelc; /* fuel capacity */
123 unsigned char l_fuelu; /* fuel used per 10 mob */
124 unsigned char l_nxlight; /* maximum number of xlight planes */
125 unsigned char l_nland; /* maximum number of units */
126 signed char l_type; /* index in lchr[] */
127 long l_flags; /* what special things can this unit do */
130 /* Land unit ability flags */
131 #define L_ENGINEER bit(1) /* Do engineering things */
132 #define L_SUPPLY bit(2) /* supply other units/sects */
133 #define L_SECURITY bit(3) /* anti-terrorist troops */
134 #define L_LIGHT bit(4) /* can go on ships */
135 #define L_MARINE bit(5) /* marine units, good at assaulting */
136 #define L_RECON bit(6) /* recon units, good at spying */
137 #define L_RADAR bit(7) /* radar unit */
138 #define L_ASSAULT bit(8) /* can assault */
139 #define L_FLAK bit(9) /* flak unit */
140 #define L_SPY bit(10) /* spy unit - way cool */
141 #define L_TRAIN bit(11) /* train unit - neato */
142 #define L_HEAVY bit(12) /* heavy unit - can't go on trains */
144 #define LND_ATTDEF(b, t) (((b) * (1.0 + ((sqrt((t)) / 100.0) * 4.0))) \
146 ((b) * (1.0 + ((sqrt((t)) / 100.0) * 4.0))))
147 #define LND_SPD(b, t) ((b * (1.0 + ((sqrt(t) / 100.0) * 2.1))) > 127 \
148 ? 127 : (b * (1.0 + ((sqrt(t) / 100.0) * 2.1))))
149 #define LND_VUL(b, t) ((b * (1.0 - ((sqrt(t) / 100.0) * 1.1))) < 0 \
150 ? 0 : (b * (1.0 - ((sqrt(t) / 100.0) * 1.1))))
151 #define LND_VIS(b, t) (b)
152 #define LND_SPY(b, t) (b)
153 #define LND_RAD(b, t) (b)
154 #define LND_FRG(b, t) ((t) ? \
155 ((b) * (logx((t), 35.0) < 1.0 ? 1.0 : \
156 logx((t), 35.0))) : (b))
157 #define LND_DAM(b, t) ((t) ? \
158 ((b) * (logx((t), 60.0) < 1.0 ? 1.0 : \
159 logx((t), 60.0))) : (b))
160 #define LND_ACC(b, t) ((b * (1.0 - ((sqrt(t) / 100.0) * 1.1))) < 0 \
161 ? 0 : (b * (1.0 - ((sqrt(t) / 100.0) * 1.1))))
162 #define LND_AMM(b, t) (b)
163 #define LND_AAF(b, t) ((b * (1.0 + ((sqrt(t) / 100.0) * 3.0))) > 127 \
164 ? 127 : (b * (1.0 + ((sqrt(t) / 100.0) * 3.0))))
165 #define LND_FC(b, t) (b)
166 #define LND_FU(b, t) (b)
167 #define LND_XPL(b, t) (b)
168 #define LND_MXL(b, t) (b)
170 /* Work required for building 100% */
171 #define LND_BLD_WORK(lcm, hcm) (20 + (lcm) + 2 * (hcm))
173 /* Chance to detect L_SPY unit (percent) */
174 #define LND_SPY_DETECT_CHANCE(eff) ((110-(eff))/100.0)
176 #define getland(n, p) ef_read(EF_LAND, (n), (p))
177 #define putland(n, p) ef_write(EF_LAND, (n), (p))
178 #define getlandp(n) (struct lndstr *)ef_ptr(EF_LAND, (n))
180 extern struct lchrstr lchr[LND_TYPE_MAX + 2];
183 LND_AIROPS_EFF = 50 /* min. efficiency for air ops */
186 /* src/lib/subs/lndsub.c */
187 extern void lnd_sweep(struct emp_qelem *, int, int, natid);
188 extern int lnd_interdict(struct emp_qelem *, coord, coord, natid);
189 extern void lnd_sel(struct nstr_item *, struct emp_qelem *);
190 extern int lnd_check_mines(struct emp_qelem *);
191 extern double lnd_pathcost(struct lndstr *, double);
192 extern int lnd_mobtype(struct lndstr *);
193 extern double lnd_mobcost(struct lndstr *, struct sctstr *);
194 extern char *lnd_path(int, struct lndstr *, char *);
196 extern double attack_val(int, struct lndstr *);
197 extern double defense_val(struct lndstr *);
198 extern void lnd_print(struct ulist *, char *);
199 extern void lnd_delete(struct ulist *, char *);
200 extern int lnd_take_casualty(int, struct ulist *, int);
201 extern void lnd_submil(struct lndstr *, int);
202 extern void lnd_takemob(struct emp_qelem *, double);
203 extern int lnd_spyval(struct lndstr *);
204 extern double intelligence_report(int, struct lndstr *, int, char *);
205 extern int count_sect_units(struct sctstr *);
206 extern void count_units(struct shpstr *);
207 extern void lnd_count_units(struct lndstr *);
208 extern void lnd_mar(struct emp_qelem *, double *, double *, int *, natid);
209 extern void lnd_put(struct emp_qelem *, natid);
210 extern void lnd_list(struct emp_qelem *);
211 extern int lnd_hardtarget(struct lndstr *);
212 extern int lnd_mar_one_sector(struct emp_qelem *, int, natid, int);
213 extern int lnd_support(natid, natid, coord, coord, int);
214 extern int lnd_can_attack(struct lndstr *);
215 extern int lnd_fortify (struct lndstr *lp, int hard_amt);
216 extern void lnd_set_tech(struct lndstr *, int);