2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2004, 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 * coas.c: Look at all the ships in the world
30 * Known contributors to this file:
32 * Dave Pare, 1986 (rewrite)
56 static int showship(struct coast **cpp, int x, int y);
59 * format: coastwatch [<SECTS>]
65 struct nstr_sect nstr;
67 struct coast *list[TSIZE];
71 int mink, minj, maxk, maxj;
76 if (snxtsct(&nstr, player->argp[1]) == 0)
78 for (i = 0; i < TSIZE; i++)
80 cp = (struct coast *)malloc(sizeof(*cp));
81 snxtitem_all(&ni, EF_SHIP);
82 while (nxtitem(&ni, (s_char *)&cp->c_shp)) {
83 if (cp->c_shp.shp_own == 0 || cp->c_shp.shp_own == player->cnum)
86 * don't bother putting subs in the table...
87 * unless they're in a sector you own (harbor or such)
89 getsect(cp->c_shp.shp_x, cp->c_shp.shp_y, §);
90 if ((mchr[(int)cp->c_shp.shp_type].m_flags & M_SUB) &&
91 (sect.sct_own != player->cnum))
93 n = scthash(cp->c_shp.shp_x, cp->c_shp.shp_y, TSIZE);
98 cp = (struct coast *)malloc(sizeof(*cp));
101 /* get that last one! */
103 pr("- = [ Coastwatch report for %s ] = -\n", cname(player->cnum));
104 pr(" Country Ship Location\n");
105 tech = tfact(player->cnum, 1.0);
106 while (nxtsct(&nstr, §) && nship) {
107 if (sect.sct_own != player->cnum)
109 see = sect.sct_type == SCT_RADAR ? 14 : 4;
110 vrange = (int)(sect.sct_effic / 100.0 * see * tech);
118 for (j = minj; j <= maxj && nship; j++) {
119 x = xnorm(sect.sct_x + j);
120 for (k = mink; k <= maxk && nship; k++) {
123 /* quick range check to save time... */
124 if (vrange < (j * j + 3 * k * k) / 4)
126 y = ynorm(sect.sct_y + k);
127 n = scthash(x, y, TSIZE);
130 nship -= showship(&list[n], x, y);
134 /* free up the coast structs calloc'ed above */
135 for (i = 0; i < TSIZE; i++) {
136 while (NULL != (cp = list[i])) {
137 list[i] = cp->c_next;
145 showship(struct coast **cpp, int x, int y)
147 register struct coast *cp;
148 register struct coast *todelete = 0;
149 register struct coast **prev;
156 /* we delete it, we free it. */
158 free((s_char *)todelete);
161 if (cp->c_shp.shp_x != x || cp->c_shp.shp_y != y) {
162 prev = &(*prev)->c_next;
165 pr(" %12.12s (#%3d) %s @ %s\n",
166 cname(cp->c_shp.shp_own), cp->c_shp.shp_own,
167 prship(&cp->c_shp), xyas(x, y, player->cnum));
169 setcont(player->cnum, cp->c_shp.shp_own, FOUND_COAST);
174 } while (NULL != (cp = cp->c_next));
175 /* check that last one! */
177 free((s_char *)todelete);