1 /*
2 * Empire - A multi-player, client/server Internet based war game.
3 * Copyright (C) 1986-2021, Dave Pare, Jeff Bailey, Thomas Ruschak,
4 * Ken Stevens, Steve McClure, Markus Armbruster
5 *
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.
10 *
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.
15 *
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/>.
18 *
19 * ---
20 *
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.
24 *
25 * ---
26 *
27 * surv.c: Show sector survey
28 *
29 * Known contributors to this file:
30 * Dave Pare, 1986
31 * Markus Armbruster, 2004-2014
32 */
33
34 #include <config.h>
35
36 #include <ctype.h>
37 #include "commands.h"
38 #include "map.h"
39 #include "optlist.h"
40
41 static char code_char(struct valstr, struct sctstr *sp);
42
43 /*
44 * survey type <sarg> ?cond
45 *
46 */
47 int
c_survey(void)48 c_survey(void)
49 {
50 int nsect;
51 struct nstr_sect nstr;
52 int y;
53 struct valstr val;
54 struct natstr *np;
55 struct sctstr sect;
56 struct range range;
57 char *ptr;
58 struct nscstr cond[NS_NCOND];
59 int ncond;
60 int i;
61 char buf[1024];
62 /* Note this is not re-entrant anyway, so we keep the buffers
63 around */
64 static char *mapbuf = NULL;
65 static char **map = NULL;
66
67 nsect = 0;
68 ptr = getstarg(player->argp[1], "commodity or variable? ", buf);
69 if (!ptr || !*ptr)
70 return RET_SYN;
71 ptr = nstr_comp_val(ptr, &val, EF_SECTOR);
72 if (!ptr)
73 return RET_SYN;
74 if (val.val_cat != NSC_OFF || nstr_promote(val.val_type) != NSC_LONG) {
75 pr("Can't survey this\n");
76 return RET_SYN;
77 }
78 for (; isspace(*ptr); ++ptr) ;
79 if (*ptr)
80 return RET_SYN;
81 if (!snxtsct(&nstr, player->argp[2]))
82 return RET_SYN;
83 if (!mapbuf)
84 mapbuf = malloc(WORLD_Y * MAPWIDTH(1));
85 if (!map) {
86 map = malloc(WORLD_Y * sizeof(char *));
87 if (map && mapbuf) {
88 for (i = 0; i < WORLD_Y; i++)
89 map[i] = &mapbuf[MAPWIDTH(1) * i];
90 } else if (map) {
91 free(map);
92 map = NULL;
93 }
94 }
95 if (!mapbuf || !map) {
96 pr("Memory error, tell the deity.\n");
97 logerror("malloc failed in sect\n");
98 return RET_FAIL;
99 }
100 ncond = nstr.ncond;
101 memcpy(cond, nstr.cond, sizeof(struct nscstr) * ncond);
102 nstr.ncond = 0;
103 np = getnatp(player->cnum);
104 xyrelrange(np, &nstr.range, &range);
105 border(&range, " ", "");
106 blankfill(mapbuf, &nstr.range, 1);
107 while (nxtsct(&nstr, §)) {
108 if (!player->owner)
109 continue;
110 ptr = &map[nstr.dy][nstr.dx];
111 if (nstr_exec(cond, ncond, §)) {
112 ++nsect;
113 *ptr = 0x80 | code_char(val, §);
114 } else {
115 *ptr = dchr[sect.sct_type].d_mnem;
116 }
117 }
118 for (y = nstr.range.ly, i = 0; i < nstr.range.height; y++, i++) {
119 int yval;
120
121 yval = yrel(np, y);
122 pr("%4d %s %4d\n", yval, map[i], yval);
123 if (y >= WORLD_Y)
124 y -= WORLD_Y;
125 }
126 border(&range, " ", "");
127 if (nsect > 0)
128 pr("\n%d sector%s.\n", nsect, splur(nsect));
129 return RET_OK;
130 }
131
132 static char
code_char(struct valstr val,struct sctstr * sp)133 code_char(struct valstr val, struct sctstr *sp)
134 {
135 int amt;
136 int n;
137 int large = val.val_type != NSC_CHAR && val.val_type != NSC_UCHAR;
138
139 nstr_eval(&val, player->cnum, sp, NSC_LONG);
140 if (CANT_HAPPEN(val.val_type != NSC_LONG))
141 return ' ';
142 amt = val.val_as.lng;
143 if (amt <= 0)
144 return ' ';
145 n = amt / (large ? 100 : 10);
146 if (n >= 10)
147 return '$';
148 return "0123456789"[n];
149 }
150