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 * skyw.c: Look at satellites in the sky.
30 * Known contributors to this file:
54 static int showsat(struct sky **skypp, int x, int y);
57 * format: skywatch [<SECTS>]
63 struct nstr_sect nstr;
65 struct sky *list[TSIZE];
69 int mink, minj, maxk, maxj;
74 if (snxtsct(&nstr, player->argp[1]) == 0)
76 for (i = 0; i < TSIZE; i++)
78 skyp = (struct sky *)malloc(sizeof(*skyp));
79 snxtitem_all(&ni, EF_PLANE);
80 while (nxtitem(&ni, (s_char *) &skyp->s_sat)) {
81 if (!skyp->s_sat.pln_own)
83 if (!(skyp->s_sat.pln_flags & PLN_LAUNCHED))
85 getsect(skyp->s_sat.pln_x, skyp->s_sat.pln_y, §);
86 n = scthash(skyp->s_sat.pln_x, skyp->s_sat.pln_y, TSIZE);
88 skyp->s_next = list[n];
90 skyp = (struct sky *)malloc(sizeof(*skyp));
93 /* get that last one! */
95 pr("- = [ Skywatch report for %s ] = -\n", cname(player->cnum));
96 pr(" %18s%20s %s\n","Country", "Satellite", "Location");
97 tech = tfact(player->cnum, 1.0);
98 while (nxtsct(&nstr, §) && nsat) {
99 if (sect.sct_own != player->cnum)
101 see = sect.sct_type == SCT_RADAR ? 14 : 4;
102 vrange = (int) (sect.sct_effic / 100.0 * see * tech);
110 for (j = minj; j <= maxj && nsat; j++) {
111 x = xnorm(sect.sct_x + j);
112 for (k = mink; k <= maxk && nsat; k++) {
115 /* quick range check to save time... */
116 if (vrange < (j * j + 3 * k * k) / 4)
118 y = ynorm(sect.sct_y + k);
119 n = scthash(x, y, TSIZE);
122 nsat -= showsat(&list[n], x, y);
126 /* free up the sky structs calloc'ed above */
127 for (i = 0; i < TSIZE; i++) {
128 while (NULL != (skyp = list[i])) {
129 list[i] = skyp->s_next;
130 free((s_char *)skyp);
137 showsat(struct sky **skypp, int x, int y)
139 register struct sky *skyp;
140 register struct sky *todelete = 0;
141 register struct sky **prev;
142 register struct plchrstr *pcp;
150 /* we delete it, we free it. */
152 free((s_char *)todelete);
155 if (skyp->s_sat.pln_x != x || skyp->s_sat.pln_y != y) {
156 prev = &(*prev)->s_next;
159 pcp = &plchr[(int)skyp->s_sat.pln_type];
161 pr(" %12.12s (#%d) %20s %s\n",
162 cname(skyp->s_sat.pln_own), skyp->s_sat.pln_own,
163 name, xyas(x, y, player->cnum));
165 /* FOUND_COAST should probably be changed to FOUND_SKY -KHS */
166 setcont(player->cnum, skyp->s_sat.pln_own, FOUND_COAST);
168 *prev = skyp->s_next;
171 } while (NULL != (skyp = skyp->s_next));
172 /* check that last one! */
174 free((s_char *)todelete);