Add calculation of close-tangibles

luprex/core/cpp/world.hpp

@@ -80,6 +80,8 @@ public:
     using IdVector = util::IdVector;
     using TanVector = std::vector<const Tangible*>;
     using Redirects = std::map<int64_t, int64_t>;
+    const float RadiusVisibility = 100.0;
+    const float RadiusClose = 10.0; 
 
     // Constructor.
     //
@@ -103,9 +105,11 @@ public:
     // get_near
     //
     // Get a list of the tangibles that are near the player.  If 'exclude_nowhere' is
-    // true, exclude any tangibles on the nowhere plane.
+    // true, exclude any tangibles on the nowhere plane.  The unsorted version returns
+    // the tangibles in an unpredictable order.
     //
     IdVector get_near(int64_t player_id, float radius, bool exclude_nowhere) const;
+    IdVector get_near_unsorted(int64_t player_id, float radius, bool exclude_nowhere) const;
     
     // Make a tangible.
     //
@@ -247,7 +251,7 @@ private:
     // We also update the actor's ID allocation pipeline.
     //
     static void diff_actor_essentials(const Tangible *mactor, const Tangible *sactor, StreamBuffer *sb); 
-    void patch_actor_essentials(StreamBuffer *sb);
+    int64_t patch_actor_essentials(StreamBuffer *sb);
 
     // Pass 2 of difference transmission: visible animations.
     //