2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2018, 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 * damage.h: Damage formulas
29 * Known contributors to this file:
32 * Markus Armbruster, 2006-2012
38 #define PERCENT_DAMAGE(x) (100 * (x) / ((x) + 100))
39 #define DPERCENT_DAMAGE(x) (100.0 * (x) / ((x) + 100.0))
40 #define DMINE_HITCHANCE(x) ((x) / ((x) + 20.0))
41 #define DMINE_LHITCHANCE(x) ((x) / ((x) + 35.0))
42 #define MINE_DAMAGE() (21 + roll(21))
43 #define MINE_LDAMAGE() (10 + roll(20))
44 #define DTORP_HITCHANCE(range, vis) \
45 (0.9 / ((range)+1) + (((vis) < 6) ? (5-(vis)) * 0.03 : 0.0))
46 #define TORP_DAMAGE() (torpedo_damage + roll0(torpedo_damage) + \
47 roll0(torpedo_damage))