scenery groups export and deserialization, associated events included in scenery node groups, AI brake charging tweak, door locking and vehicle hunting oscillation sounds

scenenodegroups.h

@@ -13,14 +13,16 @@ http://mozilla.org/MPL/2.0/.
 
 namespace scene {
 
+struct basic_group {
+// members
+    std::vector<scene::basic_node *> nodes;
+    std::vector<TEvent *> events;
+};
+
 // holds lists of grouped scene nodes
 class node_groups {
     // NOTE: during scenario deserialization encountering *.inc file causes creation of a new group on the group stack
     // this allows all nodes listed in this *.inc file to be grouped and potentially modified together by the editor.
-private:
-    // types
-    using node_sequence = std::vector<scene::basic_node *>;
-
 public:
 // constructors
     node_groups() = default;
@@ -37,14 +39,20 @@ public:
     // places provided node in specified group
     void
         insert( scene::group_handle const Group, scene::basic_node *Node );
-    std::pair<node_sequence::iterator, node_sequence::iterator>
+    // places provided event in specified group
+    void
+        insert( scene::group_handle const Group, TEvent *Event );
+    // grants direct access to specified group
+    scene::basic_group &
         group( scene::group_handle const Group ) {
-            auto &group { m_groupmap[ Group ] };
-            return { std::begin( group ), std::end( group ) }; }
+            return m_groupmap[ Group ]; }
+    // sends basic content of the class in legacy (text) format to provided stream
+    void
+        export_as_text( std::ostream &Output ) const;
 
 private:
 // types
-    using group_map = std::unordered_map<scene::group_handle, node_sequence>;
+    using group_map = std::unordered_map<scene::group_handle, scene::basic_group>;
 // methods
     // removes specified group from the group list and group information from the group's nodes
     void