2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2017, 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 * mobility.c: Add mobility to each of the items which accumulate mobility.
29 * Known contributors to this file:
31 * Steve McClure, 1998-1999
32 * Markus Armbruster, 2004-2016
45 /* Increase mobility of everything for @etus ETUs, update timestamps */
58 for (i = 0; (sectp = getsectid(i)); i++) {
59 sectp->sct_timestamp = now;
61 mob_inc_sect(sectp, etus);
64 for (i = 0; (sp = getshipp(i)); i++) {
65 sp->shp_timestamp = now;
67 mob_inc_ship(sp, etus);
70 for (i = 0; (pp = getplanep(i)); i++) {
71 pp->pln_timestamp = now;
73 mob_inc_plane(pp, etus);
76 for (i = 0; (lp = getlandp(i)); i++) {
77 lp->lnd_timestamp = now;
79 mob_inc_land(lp, etus);
83 /* Increase @sp's mobility for @etus ETUs */
85 mob_inc_sect(struct sctstr *sp, int etus)
89 if (CANT_HAPPEN(etus < 0))
94 if (sp->sct_type == SCT_WATER || sp->sct_type == SCT_SANCT)
97 value = sp->sct_mobil + ((float)etus * sect_mob_scale);
98 if (value > sect_mob_max)
100 sp->sct_mobil = value;
103 /* Increase @sp's mobility for @etus ETUs */
105 mob_inc_ship(struct shpstr *sp, int etus)
109 if (CANT_HAPPEN(etus < 0))
112 if (sp->shp_own == 0)
115 value = sp->shp_mobil + (float)etus * ship_mob_scale;
116 if (value > ship_mob_max)
117 value = ship_mob_max;
118 sp->shp_mobil = (signed char)value;
121 /* Increase @lp's mobility for @etus ETUs */
123 mob_inc_land(struct lndstr *lp, int etus)
127 if (CANT_HAPPEN(etus < 0))
130 if (lp->lnd_own == 0)
133 value = lp->lnd_mobil + ((float)etus * land_mob_scale);
134 if (value > land_mob_max) {
135 if (lp->lnd_harden < land_mob_max && !opt_MOB_ACCESS) {
137 * Automatic fortification on excess mobility.
138 * Disabled for MOB_ACCESS, because it leads to
139 * excessively deep recursion and thus miserable
140 * performance as the number of land units grows.
142 * Provide mobility to be used in lnd_fortify()
143 * without overflowing lnd_mobil.
145 lp->lnd_mobil = land_mob_max;
146 lnd_fortify(lp, value - land_mob_max);
148 value = land_mob_max;
150 lp->lnd_mobil = value;
153 /* Increase @pp's mobility for @etus ETUs */
155 mob_inc_plane(struct plnstr *pp, int etus)
159 if (CANT_HAPPEN(etus < 0))
162 if (pp->pln_own == 0)
165 value = pp->pln_mobil + ((float)etus * plane_mob_scale);
166 if (value > plane_mob_max)
167 value = plane_mob_max;
168 pp->pln_mobil = value;
172 * Credit the turn's remaining MOB_ACCESS mobility.
173 * Exactly as if everything was accessed right now.
178 struct sctstr *sectp;
184 if (CANT_HAPPEN(!opt_MOB_ACCESS))
187 for (i = 0; (sectp = getsectid(i)); i++)
188 mob_inc_sect(sectp, game_reset_tick(§p->sct_access));
190 for (i = 0; (sp = getshipp(i)); i++)
191 mob_inc_ship(sp, game_reset_tick(&sp->shp_access));
193 for (i = 0; (pp = getplanep(i)); i++)
194 mob_inc_plane(pp, game_reset_tick(&pp->pln_access));
196 for (i = 0; (lp = getlandp(i)); i++)
197 mob_inc_land(lp, game_reset_tick(&lp->lnd_access));