449 lines
11 KiB
C
449 lines
11 KiB
C
/*
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* Empire - A multi-player, client/server Internet based war game.
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* Copyright (C) 1986-2007, Dave Pare, Jeff Bailey, Thomas Ruschak,
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* Ken Stevens, Steve McClure
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ---
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*
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* See files README, COPYING and CREDITS in the root of the source
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* tree for related information and legal notices. It is expected
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* that future projects/authors will amend these files as needed.
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*
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* ---
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*
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* maps.c: Map routines
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*
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* Known contributors to this file:
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* Ken Stevens, 1995
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* Steve McClure, 1998
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* Ron Koenderink, 2006
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*/
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#include <config.h>
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#include <ctype.h>
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#include "com.h"
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#include "empobj.h"
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#include "file.h"
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#include "land.h"
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#include "map.h"
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#include "misc.h"
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#include "nat.h"
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#include "nsc.h"
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#include "nuke.h"
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#include "optlist.h"
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#include "plane.h"
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#include "player.h"
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#include "prototypes.h"
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#include "sect.h"
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#include "ship.h"
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#include "xy.h"
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static int bmnxtsct(struct nstr_sect *);
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static char map_char(unsigned char type, natid own, int owner_or_god);
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int
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do_map(int bmap, int unit_type, char *arg, char *map_flags_arg)
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{
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struct nstr_sect ns;
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char origin = '\0';
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char *b;
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int map_flags = 0;
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if (!snxtsct(&ns, arg)) {
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if (unit_map(unit_type, atoi(arg), &ns, &origin))
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return RET_FAIL;
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}
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for (b = map_flags_arg; b && *b; b++) {
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switch (*b) {
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case 's':
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case 'S':
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map_flags |= MAP_SHIP;
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break;
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case 'l':
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case 'L':
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map_flags |= MAP_LAND;
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break;
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case 'p':
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case 'P':
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map_flags |= MAP_PLANE;
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break;
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case 'n':
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case 'N':
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map_flags |= MAP_NUKE;
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break;
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case 'h':
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case 'H':
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map_flags |= MAP_HIGH;
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break;
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case '*':
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map_flags |= MAP_ALL;
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break;
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case 't':
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if (bmap != 'b')
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goto bad_flag;
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bmap = 't';
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*(b + 1) = 0;
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break;
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case 'r':
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if (bmap != 'b')
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goto bad_flag;
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bmap = 'r';
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*(b + 1) = 0;
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break;
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default:
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bad_flag:
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pr("Bad flag %c!\n", *b);
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break;
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}
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}
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return draw_map(bmap, origin, map_flags, &ns);
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}
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int
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draw_map(int bmap, char origin, int map_flags, struct nstr_sect *nsp)
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{
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struct natstr *np;
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struct range range;
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struct nstr_item ni;
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union empobj_storage unit;
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coord x, y;
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int i;
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/* Note this is not re-entrant anyway, so we keep the buffers
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around */
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static unsigned char *bitmap = NULL;
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static char *wmapbuf = NULL;
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static char **wmap = NULL;
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static int ef_mappable[] = { EF_PLANE, EF_SHIP, EF_LAND, EF_NUKE, EF_BAD };
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static int ef_unit_map[] = { MAP_PLANE, MAP_SHIP, MAP_LAND, MAP_NUKE };
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char *name;
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if (!wmapbuf)
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wmapbuf = malloc(WORLD_Y * MAPWIDTH(1));
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if (!wmap) {
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wmap = malloc(WORLD_Y * sizeof(char *));
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if (wmap && wmapbuf) {
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for (i = 0; i < WORLD_Y; i++)
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wmap[i] = &wmapbuf[MAPWIDTH(1) * i];
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} else if (wmap) {
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free(wmap);
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wmap = NULL;
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}
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}
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if (!bitmap)
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bitmap = malloc((WORLD_X * WORLD_Y) / 8);
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if (!wmapbuf || !wmap || !bitmap) {
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pr("Memory error, tell the deity.\n");
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logerror("malloc failed in draw_map\n");
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return RET_FAIL;
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}
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if (bmap == 'r') {
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if (!confirm("Are you sure you want to revert your bmap? "))
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return RET_OK;
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}
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if (!(player->command->c_flags & C_MOD)) {
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logerror("%s command needs C_MOD flag set",
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player->command->c_form);
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player->command->c_flags |= C_MOD;
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}
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np = getnatp(player->cnum);
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/* zap any conditionals */
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nsp->ncond = 0;
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xyrelrange(np, &nsp->range, &range);
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border(&range, " ", "");
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blankfill(wmapbuf, &nsp->range, 1);
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if (bmap) {
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int c;
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switch (bmap) {
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default:
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CANT_REACH();
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bmap = 'b';
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/* fall through */
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case 'b':
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while (bmnxtsct(nsp) && !player->aborted) {
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if (0 != (c = player->bmap[sctoff(nsp->x, nsp->y)]))
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wmap[nsp->dy][nsp->dx] = c;
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}
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break;
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case 't':
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while (bmnxtsct(nsp) && !player->aborted) {
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if (0 != (c = player->map[sctoff(nsp->x, nsp->y)]))
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wmap[nsp->dy][nsp->dx] = c;
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}
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break;
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case 'r':
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while (bmnxtsct(nsp) && !player->aborted) {
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player->bmap[sctoff(nsp->x, nsp->y)] =
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player->map[sctoff(nsp->x, nsp->y)];
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if (0 != (c = player->bmap[sctoff(nsp->x, nsp->y)]))
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wmap[nsp->dy][nsp->dx] = c;
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}
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ef_write(EF_BMAP, player->cnum, player->bmap);
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break;
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case 'n':
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{
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struct sctstr sect;
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if (!player->god) {
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memset(bitmap, 0, (WORLD_X * WORLD_Y) / 8);
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bitinit2(nsp, bitmap, player->cnum);
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}
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while (nxtsct(nsp, §) && !player->aborted) {
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if (!player->god && !emp_getbit(nsp->x, nsp->y, bitmap))
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continue;
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wmap[nsp->dy][nsp->dx]
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= map_char(sect.sct_newtype, sect.sct_own,
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player->owner);
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}
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break;
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}
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}
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} else {
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struct sctstr sect;
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char mapch;
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int changed = 0;
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if (!player->god) {
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memset(bitmap, 0, (WORLD_X * WORLD_Y) / 8);
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bitinit2(nsp, bitmap, player->cnum);
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}
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while (nxtsct(nsp, §) && !player->aborted) {
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if (!player->god && !emp_getbit(nsp->x, nsp->y, bitmap))
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continue;
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mapch = map_char(sect.sct_type, sect.sct_own, player->owner);
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wmap[nsp->dy][nsp->dx] = mapch;
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changed |= map_set(player->cnum, nsp->x, nsp->y, mapch, 0);
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}
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if (changed)
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writemap(player->cnum);
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}
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if (player->aborted)
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return RET_OK;
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i = 0;
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while (ef_mappable[i] != EF_BAD) {
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if (map_flags & ef_unit_map[i]) {
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snxtitem_all(&ni, ef_mappable[i]);
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while (nxtitem(&ni, &unit)) {
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if (unit.gen.own == 0)
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continue;
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if (unit.gen.own != player->cnum && !player->god)
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continue;
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if (!xyinrange(unit.gen.x, unit.gen.y, &nsp->range))
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continue;
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x = xnorm(unit.gen.x - nsp->range.lx);
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y = ynorm(unit.gen.y - nsp->range.ly);
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if (ef_mappable[i] == EF_NUKE)
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wmap[y][x] = 'N';
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else {
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if ((name = emp_obj_chr_name(&unit.gen)) == NULL)
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return RET_FAIL;
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wmap[y][x] = *name & ~0x20;
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}
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}
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}
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i++;
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}
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if (map_flags & MAP_HIGH) {
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struct sctstr sect;
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snxtsct_rewind(nsp);
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if (!player->god) {
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memset(bitmap, 0, (WORLD_X * WORLD_Y) / 8);
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bitinit2(nsp, bitmap, player->cnum);
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}
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while (nxtsct(nsp, §) && !player->aborted) {
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if (!player->god && !emp_getbit(nsp->x, nsp->y, bitmap))
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continue;
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if (sect.sct_own == player->cnum)
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wmap[nsp->dy][nsp->dx] |= 0x80;
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}
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}
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if (origin)
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wmap[5][10] = origin & ~0x20;
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for (y = nsp->range.ly, i = 0; i < nsp->range.height; y++, i++) {
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int yval;
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yval = yrel(np, y);
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wmap[i][nsp->range.width] = '\0';
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pr("%4d %s %-4d\n", yval, wmap[i], yval);
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if (y >= WORLD_Y)
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y -= WORLD_Y;
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}
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border(&range, " ", "");
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return RET_OK;
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}
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/*
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* get the next sector in the range
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*/
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static int
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bmnxtsct(struct nstr_sect *np)
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{
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while (1) {
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np->dx++;
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np->x++;
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if (np->x >= WORLD_X)
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np->x = 0;
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if (np->dx >= np->range.width) {
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np->dx = 0;
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np->x = np->range.lx;
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np->dy++;
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if (np->dy >= np->range.height)
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return 0;
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np->y++;
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if (np->y >= WORLD_Y)
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np->y = 0;
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}
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if ((np->y + np->x) & 01)
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continue;
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if (np->type == NS_DIST) {
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np->curdist = mapdist(np->x, np->y, np->cx, np->cy);
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if (np->curdist > np->dist)
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continue;
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}
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np->id = sctoff(np->x, np->y);
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return 1;
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}
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/*NOTREACHED*/
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}
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/*
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* Return character to use in maps for sector type TYPE owned by OWN.
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* If OWNER_OR_GOD, the map is for the sector's owner or a deity.
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*/
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static char
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map_char(unsigned char type, natid own, int owner_or_god)
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{
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if (CANT_HAPPEN(type > SCT_TYPE_MAX || !dchr[type].d_mnem))
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return '?';
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if (owner_or_god
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|| type == SCT_WATER || type == SCT_MOUNT || type == SCT_WASTE
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|| (!own && (type == SCT_RURAL || type == SCT_PLAINS)))
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return dchr[type].d_mnem;
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return '?';
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}
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int
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unit_map(int unit_type, int uid, struct nstr_sect *nsp, char *originp)
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{
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struct empobj *gp;
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struct range range;
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char *name;
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gp = get_empobjp(unit_type, uid);
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if (!gp || (gp->own != player->cnum && !player->god) || gp->own == 0)
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return RET_FAIL;
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if (unit_type == EF_NUKE)
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*originp = 'n';
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else {
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if ((name = emp_obj_chr_name(gp)) == NULL)
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return RET_FAIL;
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*originp = *name;
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}
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range.lx = xnorm(gp->x - 10);
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range.hx = xnorm(gp->x + 11);
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range.ly = ynorm(gp->y - 5);
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range.hy = ynorm(gp->y + 6);
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xysize_range(&range);
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snxtsct_area(nsp, &range);
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return RET_OK;
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}
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int
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display_region_map(int bmap, int unit_type, coord curx, coord cury,
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char *arg)
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{
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char coordinates[80];
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char *map_flag_arg;
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if (!arg || !*arg) {
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struct natstr *np;
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np = getnatp(player->cnum);
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sprintf(coordinates, "%d:%d,%d:%d",
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xrel(np, curx - 10), xrel(np, curx + 11),
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yrel(np, cury - 5), yrel(np, cury + 6));
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arg = coordinates;
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map_flag_arg = NULL;
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} else {
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map_flag_arg = strchr(arg, ' ');
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if (map_flag_arg != NULL) {
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*map_flag_arg++ = '\0';
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while (isspace(*map_flag_arg)) map_flag_arg++;
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}
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}
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player->condarg = NULL;
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return do_map(bmap, unit_type, arg, map_flag_arg);
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}
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int
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bmaps_intersect(natid a, natid b)
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{
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char *mapa = ef_ptr(EF_MAP, a);
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char *mapb = ef_ptr(EF_MAP, b);
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int i;
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for (i = 0; i < WORLD_X * WORLD_Y / 2; ++i, ++mapa, ++mapb)
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if (*mapa && *mapa != ' ' && *mapb && *mapb != ' ')
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return 1;
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return 0;
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}
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/* Note that this requires that the BMAP is mapped into memory */
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int
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share_bmap(natid from, natid to, struct nstr_sect *ns, char des,
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char *from_name)
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{
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char *from_bmap = ef_ptr(EF_BMAP, from);
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char *to_bmap = ef_ptr(EF_BMAP, to);
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int n = 0;
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struct sctstr sect;
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char fromdes;
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char todes;
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char from_des = *from_name;
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if (isalpha(from_des))
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from_des &= ~0x20;
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while (nxtsct(ns, §)) {
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if (!(fromdes = from_bmap[sctoff(ns->x, ns->y)]))
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continue;
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todes = to_bmap[sctoff(ns->x, ns->y)];
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if (todes &&
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todes != '?' &&
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todes != '.' && todes != ' ' && todes != from_des)
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continue;
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if (sect.sct_own == from) {
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if (fromdes != '=' && fromdes != 'h' && fromdes != des)
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fromdes = from_des;
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}
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if (todes == fromdes)
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continue;
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n += map_set(to, ns->x, ns->y, fromdes, 1);
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}
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if (n)
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writebmap(to);
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return n;
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}
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