--- deliantra/server/include/player.h	2008/09/25 22:58:13	1.84
+++ deliantra/server/include/player.h	2008/12/23 00:39:48	1.87
@@ -166,9 +166,28 @@
   /* Special DM fields */
   tag_t *stack_items;           /* Item stack for patch/dump/... commands */
   int ACC (RW, stack_position);           /* Current stack position, 0 for no item */
-  sint8 blocked_los[MAP_CLIENT_X][MAP_CLIENT_Y];        /* array showing what spaces */
-                                                        /* the player can see.  For maps smaller than */
-                                                        /* MAP_CLIENT_.., the upper left is used */
+  sint8 los[MAP_CLIENT_X][MAP_CLIENT_Y];        /* array showing what spaces */
+                                                /* the player can see.  For maps smaller than */
+                                                /* MAP_CLIENT_.., the center is used */
+
+  // return the los value for the given coordinate
+  MTH sint8 blocked_los (int dx, int dy) const
+  {
+    dx += LOS_X0;
+    dy += LOS_Y0;
+
+    return 0 <= dx && dx < MAP_CLIENT_X
+        && 0 <= dy && dy < MAP_CLIENT_Y
+           ? los[dx][dy] : LOS_BLOCKED;
+  }
+
+  // unchecked variant
+  sint8 blocked_los_uc (int dx, int dy) const
+  {
+    return los[dx + LOS_X0][dy + LOS_Y0];
+  }
+
+  MTH void clear_los (sint8 value = LOS_BLOCKED);
 
   shstr ACC (RW, invis_race);             /* What race invisible to? */
 
@@ -249,6 +268,10 @@
   for (unsigned _i = 0; _i < ::players.size (); ++_i)	\
     statementvar (player *, var, ::players [_i])
 
+#define for_all_players_on_map(var,mapp)		\
+  for_all_players(var)					\
+    if ((var)->ob->map == (mapp))
+
 inline void
 object::statusmsg (const char *msg, int color)
 {