--- deliantra/server/include/map.h	2011/05/04 07:36:40	1.138
+++ deliantra/server/include/map.h	2011/05/08 21:51:26	1.148
@@ -52,19 +52,23 @@
 
 #define MAP_LAYERS 3
 
-// tile map index
-enum {
+// tile map index - toggling the lowest bit reverses direction
+enum
+{
   TILE_NORTH,
-  TILE_EAST,
   TILE_SOUTH,
   TILE_WEST,
+  TILE_EAST,
   TILE_UP,
   TILE_DOWN,
-  TILE_NUM,
+  TILE_NUM
 };
 
-/* Values for in_memory below */
-enum {
+#define REVERSE_TILE_DIR(dir) ((dir) ^ 1)
+
+/* Values for state below */
+enum
+{
   MAP_SWAPPED,  // header loaded, nothing else
   MAP_INACTIVE, // in memory, linkable, but not active
   MAP_ACTIVE,   // running!
@@ -91,7 +95,7 @@
  */
 #define OUT_OF_REAL_MAP(M,X,Y) (!(IN_RANGE_EXC ((X), 0, (M)->width) && IN_RANGE_EXC ((Y), 0, (M)->height)))
 
-/* These are used in the MapLook flags element.  They are not used in
+/* These are used in the mapspace flags element.  They are not used in
  * in the object flags structure.
  */
 #define P_BLOCKSVIEW	0x01
@@ -116,6 +120,12 @@
 #define P_OUT_OF_MAP	0x10000 /* This space is outside the map */
 #define	P_NEW_MAP	0x20000 /* Coordinates passed result in a new tiled map  */
 
+// persistent flags (pflags) in mapspace
+enum
+{
+  PF_VIS_UP = 0x01, // visible upwards, set by upmap, cleared by mapspace
+};
+
 /* Instead of having numerous arrays that have information on a
  * particular space (was map, floor, floor2, map_ob),
  * have this structure take care of that information.
@@ -139,7 +149,8 @@
   uint32_t ACC (RW, smell);		// the last count a player was seen here, or 0
   static uint32_t ACC (RW, smellcount); // global smell counter
 
-  uint32_t pad1_; // pad to 64 bytes on 64 bit systems
+  uint8_t pflags;			// additional, persistent flags
+  uint8_t pad [3];			// pad to 64 bytes on LP64 systems
 
 //-GPL
 
@@ -165,11 +176,16 @@
     return flags_;
   }
 
+  MTH void update_up ();
+  
   MTH void invalidate ()
   {
     flags_ = 0;
+
+    if (pflags)
+      update_up ();
   }
-  
+
   MTH object *player ()
   {
     object *op;
@@ -216,6 +232,18 @@
   int dx, dy; // offset to go from local coordinates to original tile */
 };
 
+// (refcounted) list of objects on this map that need physics processing
+struct physics_queue
+: unordered_vector<object *>
+{
+  int i; // already processed
+  physics_queue ();
+  ~physics_queue ();
+  object *pop ();
+};
+
+#define PHYSICS_QUEUES 16 // "activity" at least every 16 ticks
+
 //+GPL
 
 struct shopitems : zero_initialised
@@ -266,11 +294,11 @@
   bool ACC (RW, fixed_resettime);  /* if true, reset time is not affected by
                                     * players entering/exiting map
                                     */
-  sint32 ACC (RW, timeout);        /* swapout is set to this */
-  sint32 ACC (RW, swap_time);      /* When it reaches 0, the map will be swapped out */
-  uint32 ACC (RW, in_memory);      /* If not true, the map has been freed and must
+  uint8 ACC (RW, state);           /* If not true, the map has been freed and must
                                     * be loaded before used.  The map,omap and map_ob
                                     * arrays will be allocated when the map is loaded */
+  sint32 ACC (RW, timeout);        /* swapout is set to this */
+  sint32 ACC (RW, swap_time);      /* When it reaches 0, the map will be swapped out */
   sint16 players;        /* How many players are on this map right now */
   uint16 ACC (RW, difficulty);     /* What level the player should be to play here */
 
@@ -299,6 +327,12 @@
 
 //-GPL
 
+  physics_queue pq[PHYSICS_QUEUES];
+  MTH void queue_physics (object *ob, int after = 0);
+  MTH void queue_physics_at (int x, int y);
+  MTH int run_physics (tick_t tick, int max_objects);
+  MTH void activate_physics ();
+
   // the maptile:: is neccessary here for the perl interface to work
   MTH sint8 darklevel (sint8 outside = maptile::outdoor_darkness) const
   {
@@ -365,7 +399,7 @@
   void do_destroy ();
   void gather_callbacks (AV *&callbacks, event_type event) const;
 
-  MTH bool linkable () { return in_memory >= MAP_INACTIVE; }
+  MTH bool linkable () { return state >= MAP_INACTIVE; }
 
   MTH int size () const { return width * height; }
 
@@ -373,6 +407,12 @@
 
   MTH void touch () { last_access = runtime; }
 
+  // returns the map at given direction. if the map isn't linked yet,
+  // it will either return false (if load is false), or otherwise try to link
+  // it - if linking fails because the map is not loaded yet, it will
+  // start loading the map and return 0.
+  // thus, if you get 0, the map exists and load is true, then some later
+  // call (some tick or so later...) will eventually succeed.
   MTH maptile *tile_available (int dir, bool load = true);
 
   // find the map that is at coordinate x|y relative to this map