2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2006, 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 * skyw.c: Look at satellites in the sky.
30 * Known contributors to this file:
55 static int showsat(struct sky **skypp, int x, int y);
58 * format: skywatch [<SECTS>]
64 struct nstr_sect nstr;
66 struct sky *list[TSIZE];
70 int mink, minj, maxk, maxj;
75 if (snxtsct(&nstr, player->argp[1]) == 0)
77 for (i = 0; i < TSIZE; i++)
79 skyp = malloc(sizeof(*skyp));
80 snxtitem_all(&ni, EF_PLANE);
81 while (nxtitem(&ni, &skyp->s_sat)) {
82 if (!skyp->s_sat.pln_own)
84 if (!(skyp->s_sat.pln_flags & PLN_LAUNCHED))
86 getsect(skyp->s_sat.pln_x, skyp->s_sat.pln_y, §);
87 n = scthash(skyp->s_sat.pln_x, skyp->s_sat.pln_y, TSIZE);
89 skyp->s_next = list[n];
91 skyp = malloc(sizeof(*skyp));
94 /* get that last one! */
96 pr("- = [ Skywatch report for %s ] = -\n", cname(player->cnum));
97 pr(" %18s%20s %s\n", "Country", "Satellite", "Location");
98 tech = tfact(player->cnum, 1.0);
99 while (nxtsct(&nstr, §) && nsat) {
100 if (sect.sct_own != player->cnum)
102 see = sect.sct_type == SCT_RADAR ? 14 : 4;
103 vrange = (int)(sect.sct_effic / 100.0 * see * tech);
111 for (j = minj; j <= maxj && nsat; j++) {
112 x = xnorm(sect.sct_x + j);
113 for (k = mink; k <= maxk && nsat; k++) {
116 /* quick range check to save time... */
117 if (vrange < (j * j + 3 * k * k) / 4)
119 y = ynorm(sect.sct_y + k);
120 n = scthash(x, y, TSIZE);
123 nsat -= showsat(&list[n], x, y);
127 /* free up the sky structs calloc'ed above */
128 for (i = 0; i < TSIZE; i++) {
129 while (NULL != (skyp = list[i])) {
130 list[i] = skyp->s_next;
138 showsat(struct sky **skypp, int x, int y)
141 struct sky *todelete = 0;
143 struct plchrstr *pcp;
151 /* we delete it, we free it. */
156 if (skyp->s_sat.pln_x != x || skyp->s_sat.pln_y != y) {
157 prev = &(*prev)->s_next;
160 pcp = &plchr[(int)skyp->s_sat.pln_type];
162 pr(" %12.12s (#%d) %20s %s\n",
163 cname(skyp->s_sat.pln_own), skyp->s_sat.pln_own,
164 name, xyas(x, y, player->cnum));
166 /* FOUND_COAST should probably be changed to FOUND_SKY -KHS */
167 setcont(player->cnum, skyp->s_sat.pln_own, FOUND_COAST);
169 *prev = skyp->s_next;
172 } while (NULL != (skyp = skyp->s_next));
173 /* check that last one! */