Refactor|GameMap: Moved more logics for map loading into GameMap

doomsday/client/include/map/gamemap.h

@@ -595,6 +595,8 @@ class GameMap
 
 public: /// @todo Make private:
 
+    void finishMapElements();
+
     /**
      * @pre Axis-aligned bounding boxes of all Sectors must be initialized.
      */

doomsday/client/include/map/polyobj.h

@@ -36,6 +36,10 @@ typedef struct polyobj_s {
         std::memset(this, 0, sizeof(polyobj_s));
     }
 
+    // Does nothing about the user data section.
+    ~polyobj_s()
+    {}
+
     /**
      * Translate the origin of the polyobj in the map coordinate space.
      *

doomsday/client/include/map/sector.h

@@ -315,6 +315,12 @@ class Sector : public de::MapElement
      */
     void updateRoughArea();
 
+    /**
+     * @param base  Mobj base to link in @a sector. Caller should ensure that the
+     *              same object is not linked multiple times into the chain.
+     */
+    void linkSoundEmitter(ddmobj_base_t &newEmitter);
+
     /**
      * Update the origin of the sector according to the point defined by the
      * center of the sector's axis-aligned bounding box (which must be