2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2016, 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 * ship.c: Ship characteristics
29 * Known contributors to this file:
32 * Thomas Ruschak, 1992
45 * Initialized on startup from ship.config and deity custom config (if any).
46 * Terminated by a sentinel with null m_name.
48 struct mchrstr mchr[SHP_TYPE_MAX + 2];
50 #define logx(a, b) (log((a)) / log((b)))
51 #define SHP_DEF(b, t) (t ? (b * (logx(t, 40.0) < 1.0 ? 1.0 : \
53 #define SHP_SPD(b, t) (t ? (b * (logx(t, 35.0) < 1.0 ? 1.0 : \
55 #define SHP_VIS(b, t) (b * (1 - (sqrt(t) / 50)))
56 #define SHP_RNG(b, t) (t ? (b * (logx(t, 35.0) < 1.0 ? 1.0 : \
58 #define SHP_FIR(b, t) (t ? (b * (logx(t, 60.0) < 1.0 ? 1.0 : \
62 m_armor(struct mchrstr *mcp, int tech)
64 return SHP_DEF(mcp->m_armor, MAX(0, tech - mcp->m_tech));
68 m_speed(struct mchrstr *mcp, int tech)
70 return SHP_SPD(mcp->m_speed, MAX(0, tech - mcp->m_tech));
74 m_visib(struct mchrstr *mcp, int tech)
76 return SHP_VIS(mcp->m_visib, MAX(0, tech - mcp->m_tech));
80 m_frnge(struct mchrstr *mcp, int tech)
82 return SHP_RNG(mcp->m_frnge, MAX(0, tech - mcp->m_tech));
86 m_glim(struct mchrstr *mcp, int tech)
88 return SHP_FIR(mcp->m_glim, MAX(0, tech - mcp->m_tech));
92 shp_armor(struct shpstr *sp)
94 return m_armor(mchr + sp->shp_type, sp->shp_tech);
98 shp_speed(struct shpstr *sp)
100 return m_speed(mchr + sp->shp_type, sp->shp_tech);
104 shp_visib(struct shpstr *sp)
106 return m_visib(mchr + sp->shp_type, sp->shp_tech);
110 shp_frnge(struct shpstr *sp)
112 return m_frnge(mchr + sp->shp_type, sp->shp_tech);
116 shp_glim(struct shpstr *sp)
118 return m_glim(mchr + sp->shp_type, sp->shp_tech);