2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2000, 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 the "LEGAL", "LICENSE", "CREDITS" and "README" files for all the
23 * related information and legal notices. It is expected that any future
24 * projects/authors will amend these files as needed.
28 * tfact.c: return tech fact given multiplier
30 * Known contributors to this file:
38 extern float fire_range_factor;
41 tfact(natid cn, double mult)
47 tlev = np->nat_level[NAT_TLEV];
48 tlev = (50.0 + tlev) / (200.0 + tlev);
53 tfactfire(natid cn, double mult)
59 tlev = np->nat_level[NAT_TLEV];
60 tlev = (50.0 + tlev) / (200.0 + tlev);
61 return mult * tlev * fire_range_factor;
65 techfact(int level, double mult)
67 return mult * ((50.0 + level) / (200.0 + level));
71 * added so that firing range can be different to other ranges
74 techfactfire(int level, double mult)
76 return mult * ((50.0 + level) / (200.0 + level)) * fire_range_factor;
80 * figure out relative difference between two tech levels
83 reltech(int level1, int level2, double mult)
87 diff = level1 - level2;
88 return (1.0 + ((diff + 50.0) / (level1 + 50.0))) * mult;