satisfied further demands

src/vehicle.h

@@ -1824,7 +1824,7 @@ class vehicle
         /**
          * vehicle is driving itself
          */
-        void selfdrive( int turn, int acceleration );
+        void selfdrive( int trn, int acceleration );
         /**
          * can the helicopter descend/ascend here?
          */
@@ -1833,11 +1833,11 @@ class vehicle
         bool check_is_heli_landed();
         /**
          * Player is driving the vehicle
-         * @param turn is turn direction
+         * @param trn is turn direction
          * @param acceleration is acceleration
          * @param z for vertical movement - e.g helicopters
          */
-        void pldrive( Character &driver, int turn, int acceleration, int z = 0 );
+        void pldrive( Character &driver, int trn, int acceleration, int z = 0 );
 
         /**
         * Flags item \p tool with PSEUDO, if it has MOD pocket then a `pseudo_magazine_mod` is

src/vehicle_move.cpp

@@ -1304,7 +1304,6 @@ monster *vehicle::get_harnessed_animal() const
     return nullptr;
 }
 
-// "turn" parameter changed to "trn" to avoid clashing with "turn" operation.
 void vehicle::selfdrive( const int trn, const int acceleration )
 {
     if( !is_towed() && !magic && !get_harnessed_animal() && !has_part( "AUTOPILOT" ) ) {
@@ -1413,7 +1412,6 @@ bool vehicle::check_heli_ascend( Character &p ) const
     return true;
 }
 
-// Parameter "turn" changed to "trn" to not clash with operation "turn".
 void vehicle::pldrive( Character &driver, const int trn, const int acceleration, const int z )
 {
     bool is_non_proficient = false;