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authorSteve Slaven <bpk@hoopajoo.net>2005-03-12 00:27:55 (GMT)
committerSteve Slaven <bpk@hoopajoo.net>2005-03-12 00:27:55 (GMT)
commit77b250bfb63a28a8fe8a8da67de7354bce6e61ff (patch)
treee28f72c18305016c19c608f5fce4432529e7673d /map.c
parent5dfb1906b299bf7c8a1ee3ba5cd1c9ea40648d89 (diff)
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Initial revisionv1.2.7
Diffstat (limited to 'map.c')
-rw-r--r--map.c193
1 files changed, 193 insertions, 0 deletions
diff --git a/map.c b/map.c
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index 0000000..8b88269
--- /dev/null
+++ b/map.c
@@ -0,0 +1,193 @@
+/*
+ * map.c -- mapping routines.
+ *
+ * Copyright (C) 1998 by Massimiliano Ghilardi
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <ctype.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include "defines.h"
+#include "main.h"
+#include "tty.h"
+#include "edit.h"
+#include "tcp.h"
+
+/*
+ * mapping variables
+ */
+static char mappath[MAX_MAPLEN]; /* circular path list */
+static int mapstart = 0; /* index to first map entry */
+static int mapend = 0; /* index one past last map entry */
+
+#define MAPINDEX(i) (((i) + MAX_MAPLEN) % MAX_MAPLEN)
+#define MAPENTRY(i) mappath[MAPINDEX(i)]
+
+/*
+ * return reverse direction
+ */
+static char reverse_dir __P1 (char,dir)
+{
+ static char dirs[] = "nsewud";
+ char *p = strchr(dirs, dir);
+ return p ? dirs[(p - dirs) ^ 1] : 0;
+}
+
+/*
+ * retrace steps on map, optionally walk them back
+ */
+void map_retrace __P2 (int,steps, int,walk_back)
+{
+ char cmd[2];
+
+ cmd[1] = '\0';
+
+ if (!steps && !walk_back)
+ mapend = mapstart;
+ else {
+ if (!steps)
+ steps = -1;
+ if (walk_back && echo_ext) {
+ status(1);
+ tty_putc('[');
+ }
+
+ while (mapstart != mapend && steps--) {
+ mapend = MAPINDEX(mapend - 1);
+ if (walk_back) {
+ cmd[0] = reverse_dir(mappath[mapend]);
+ if (echo_ext)
+ tty_putc(cmd[0]);
+ tcp_write(tcp_fd, cmd);
+ }
+ }
+ if (walk_back && echo_ext)
+ tty_puts("]\n");
+ }
+}
+
+/*
+ * show automatic map (latest steps) in the form s2ews14n
+ */
+void map_show __P0 (void)
+{
+ char lastdir;
+ int count = 0;
+ int i;
+
+ if (mapstart == mapend) {
+ PRINTF("#map empty\n");
+ } else {
+ PRINTF("#map: ");
+
+ lastdir = mappath[mapstart];
+ for (i = mapstart; i != mapend; i = MAPINDEX(i + 1)) {
+ if (mappath[i] != lastdir) {
+ if (count > 1)
+ tty_printf("%d", count);
+ tty_putc(lastdir);
+
+ count = 1;
+ lastdir = mappath[i];
+ } else
+ count++;
+ }
+
+ if (count > 1)
+ tty_printf("%d", count);
+
+ tty_printf("%c\n", lastdir);
+ }
+}
+
+/*
+ * print map to string in the form seewsnnnnn
+ */
+void map_sprintf __P1 (char *,buf)
+{
+ int i;
+
+ if (mapstart != mapend)
+ for (i = mapstart; i != mapend; i = MAPINDEX(i + 1))
+ *buf++ = mappath[i];
+ *buf = '\0';
+}
+
+/*
+ * add direction to automap
+ */
+void map_add_dir __P1 (char,dir)
+{
+#ifdef NOMAZEMAPPING
+ if (mapend != mapstart && dir == reverse_dir(MAPENTRY(mapend - 1))) {
+ mapend = MAPINDEX(mapend - 1); /* retrace one step */
+ } else
+#endif
+ {
+ MAPENTRY(mapend) = dir;
+ mapend = MAPINDEX(mapend + 1);
+ if(mapend == mapstart)
+ mapstart = MAPINDEX(mapstart + 1);
+ }
+}
+
+/*
+ * execute walk if word is valid [speed]walk sequence -
+ * return 1 if walked, 0 if not
+ */
+int map_walk __P3 (char *,word, int,silent, int,maponly)
+{
+ char buf[16];
+ int n = strlen(word);
+ int is_main = (tcp_fd == tcp_main_fd);
+
+ if (!is_main && !maponly && !opt_speedwalk)
+ return 0;
+ if (!n || (n > 1 && !opt_speedwalk && !maponly) ||
+ !strchr("neswud", word[n - 1]) ||
+ (int)strspn(word, "neswud0123456789") != n)
+ return 0;
+
+ if (maponly)
+ silent = 1;
+ buf[1] = '\0';
+ while (*word) {
+ if (!silent) { status(1); tty_putc('['); }
+
+ if (isdigit(*word)) {
+ n = strtol(word, &word, 10);
+ if (!silent)
+ tty_printf("%d", n);
+ } else
+ n = 1;
+ if (!silent)
+ tty_putc(*word);
+ while (n--) {
+ *buf = *word;
+ if (!maponly) {
+ tcp_write(tcp_fd, buf);
+ }
+ if (is_main || maponly)
+ map_add_dir(*word);
+ }
+ if (!silent)
+ tty_puts("] ");
+ word++;
+ }
+ if (!silent)
+ tty_putc('\n');
+ return !maponly;
+}
+