removes obsolete code, adds comments for readability

src/game/logic/ai/aigroup.cpp

@@ -1641,19 +1641,25 @@ void Get_Helicopter_Offset(Coord3D &pos, int count)
     }
 }
 
+/**
+Group_Tighten_To_Position - Performs tightening of the group members towards a target position.
+This method iterates over the group members, calculates their distances to the target position,
+and sorts them in ascending order based on the squared distance. It then applies tightening
+behavior to each member based on the specified conditions.
+
+@param target_pos The target position to tighten towards.
+@param append A flag indicating whether to append to existing waypoints or not.
+@param cmd_source The source of the command.
+*/
 void AIGroup::Group_Tighten_To_Position(const Coord3D *target_pos, bool append, CommandSourceType cmd_source)
 {
-    if (cmd_source == COMMANDSOURCE_PLAYER && g_theWriteableGlobalData->m_groupMoveClickToGatherAreaFactor > 0.0f) {
-        Coord2D min;
-        Coord2D max;
-        Coord3D center;
-        Get_Min_Max_And_Center(&min, &max, &center);
-    }
 
+    // Create a SimpleObjectIterator to hold and iterate over the group members
     MemoryPoolObjectHolder holder(nullptr);
     SimpleObjectIterator *iter = new SimpleObjectIterator();
     holder.Hold(iter);
 
+    // Iterate over the group members and insert them into the iterator based on distance to target
     for (auto it = m_memberList.begin(); it != m_memberList.end(); it++) {
         Coord3D member_pos = *(*it)->Get_Position();
 
@@ -1668,9 +1674,11 @@ void AIGroup::Group_Tighten_To_Position(const Coord3D *target_pos, bool append,
         }
     }
 
+    // Sort the iterator in ascending order based on the distance to target
     iter->Sort(ITER_SORTED_NEAR_TO_FAR);
     int heli_count = 0;
 
+    // Iterate over the sorted members and apply tightening behavior
     for (Object *iter_obj = iter->First(); iter_obj != nullptr; iter_obj = iter->Next()) {
         AIUpdateInterface *update = iter_obj->Get_AI_Update_Interface();
 
@@ -1686,6 +1694,7 @@ void AIGroup::Group_Tighten_To_Position(const Coord3D *target_pos, bool append,
         }
     }
 
+    // Update the positions of the members in the Pathfinder
     for (Object *iter_obj = iter->First(); iter_obj != nullptr; iter_obj = iter->Next()) {
         Coord3D iter_pos = *iter_obj->Get_Position();
         g_theAI->Get_Pathfinder()->Update_Pos(iter_obj, &iter_pos);