2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2008, 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.c: Land unit characteristics
30 * Known contributors to this file:
31 * Thomas Ruschak, 1992
33 * Steve McClure, 1998-2000
43 * Table of land unit types
44 * Initialized on startup from land.config and deity custom config (if any).
45 * Terminated by a sentinel with null l_name.
47 struct lchrstr lchr[LND_TYPE_MAX + 2];
49 #define logx(a, b) (log((a)) / log((b)))
50 #define LND_ATTDEF(b, t) (((b) * (1.0 + ((sqrt((t)) / 100.0) * 4.0))) \
52 ((b) * (1.0 + ((sqrt((t)) / 100.0) * 4.0))))
53 #define LND_SPD(b, t) ((b * (1.0 + ((sqrt(t) / 100.0) * 2.1))) > 127 \
54 ? 127 : (b * (1.0 + ((sqrt(t) / 100.0) * 2.1))))
55 #define LND_VUL(b, t) ((b * (1.0 - ((sqrt(t) / 100.0) * 1.1))) < 0 \
56 ? 0 : (b * (1.0 - ((sqrt(t) / 100.0) * 1.1))))
57 #define LND_FRG(b, t) ((t) ? \
58 ((b) * (logx((t), 35.0) < 1.0 ? 1.0 : \
59 logx((t), 35.0))) : (b))
60 #define LND_DAM(b, t) ((t) ? \
61 ((b) * (logx((t), 60.0) < 1.0 ? 1.0 : \
62 logx((t), 60.0))) : (b))
63 #define LND_ACC(b, t) ((b * (1.0 - ((sqrt(t) / 100.0) * 1.1))) < 0 \
64 ? 0 : (b * (1.0 - ((sqrt(t) / 100.0) * 1.1))))
65 #define LND_AAF(b, t) ((b * (1.0 + ((sqrt(t) / 100.0) * 3.0))) > 127 \
66 ? 127 : (b * (1.0 + ((sqrt(t) / 100.0) * 3.0))))
69 l_att(struct lchrstr *lcp, int tech)
71 return LND_ATTDEF(lcp->l_att, MAX(0, tech - lcp->l_tech));
75 l_def(struct lchrstr *lcp, int tech)
77 return LND_ATTDEF(lcp->l_def, MAX(0, tech - lcp->l_tech));
81 l_vul(struct lchrstr *lcp, int tech)
83 return LND_VUL(lcp->l_vul, MAX(0, tech - lcp->l_tech));
87 l_spd(struct lchrstr *lcp, int tech)
89 return LND_SPD(lcp->l_spd, MAX(0, tech - lcp->l_tech));
93 l_frg(struct lchrstr *lcp, int tech)
95 return LND_FRG(lcp->l_frg, MAX(0, tech - lcp->l_tech));
99 l_acc(struct lchrstr *lcp, int tech)
101 return LND_ACC(lcp->l_acc, MAX(0, tech - lcp->l_tech));
105 l_dam(struct lchrstr *lcp, int tech)
107 return LND_DAM(lcp->l_dam, MAX(0, tech - lcp->l_tech));
111 l_aaf(struct lchrstr *lcp, int tech)
113 return LND_AAF(lcp->l_aaf, MAX(0, tech - lcp->l_tech));
117 lnd_att(struct lndstr *lp)
119 return l_att(lchr + lp->lnd_type, lp->lnd_tech);
123 lnd_def(struct lndstr *lp)
125 return l_def(lchr + lp->lnd_type, lp->lnd_tech);
129 lnd_vul(struct lndstr *lp)
131 return l_vul(lchr + lp->lnd_type, lp->lnd_tech);
135 lnd_spd(struct lndstr *lp)
137 return l_spd(lchr + lp->lnd_type, lp->lnd_tech);
141 lnd_vis(struct lndstr *lp)
143 return lchr[lp->lnd_type].l_vis;
147 lnd_frg(struct lndstr *lp)
149 return l_frg(lchr + lp->lnd_type, lp->lnd_tech);
153 lnd_acc(struct lndstr *lp)
155 return l_acc(lchr + lp->lnd_type, lp->lnd_tech);
159 lnd_dam(struct lndstr *lp)
161 return l_dam(lchr + lp->lnd_type, lp->lnd_tech);
165 lnd_aaf(struct lndstr *lp)
167 return l_aaf(lchr + lp->lnd_type, lp->lnd_tech);