--- beasts/main.c.orig	Sun Mar  5 17:54:40 2000
+++ beasts/main.c	Sun Mar  5 17:56:02 2000
@@ -4,6 +4,7 @@
 /* Includes */
 
 #include <time.h>   /* time (for seeding) */
+#include <signal.h>
 
 #include "beasts.h"
 #include "beast.h" 
@@ -243,9 +244,17 @@
 void
 moveman(Direction thatway, Field *field, Hero *hero)
 {
-  int step=dir_to_step(thatway, field->x);
-  int oldpos=field->x*hero->y + hero->x;
-  int newpos=oldpos+step;
+  int step;
+  int oldpos;
+  int newpos;
+  sigset_t set;
+
+  sigemptyset(&set);
+  sigaddset(&set, SIGALRM);
+  sigprocmask(SIG_BLOCK, &set, NULL);
+  step=dir_to_step(thatway, field->x);
+  oldpos=field->x*hero->y + hero->x;
+  newpos=oldpos+step;
 
   if (field->map[newpos]==EMPTY || 
       ((field->map[newpos]==BLOCK) &&
@@ -253,6 +262,7 @@
     field->map[oldpos]=EMPTY;
     field->map[newpos]=HERO;
   } else {
+    sigprocmask(SIG_UNBLOCK, &set, NULL);
     return;
   }
 
@@ -297,6 +307,7 @@
   /* (*draw_icon)(hero->x, hero->y, HERO); */
 
   (*field_refresh)();
+  sigprocmask(SIG_UNBLOCK, &set, NULL);
 
 }