Add "turn backwards" to relative control scheme

project.godot

@@ -73,6 +73,11 @@ turn_right={
 "events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194321,"key_label":0,"unicode":0,"echo":false,"script":null)
 ]
 }
+turn_backwards={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194322,"key_label":0,"unicode":0,"echo":false,"script":null)
+]
+}
 fire={
 "deadzone": 0.5,
 "events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":32,"key_label":0,"unicode":32,"echo":false,"script":null)

ships/player.gd

@@ -99,18 +99,26 @@ func _integrate_forces(state: PhysicsDirectBodyState3D) -> void:
 
     match UserPreferences.control_scheme:
         UserPreferences.ControlScheme.RELATIVE:
-            if not Input.is_action_pressed("turn_left") and not Input.is_action_pressed("turn_right"):
+            var turning_left := Input.is_action_pressed("turn_left")
+            var turning_right := Input.is_action_pressed("turn_right")
+            var turning_backwards = Input.is_action_pressed("turn_backwards")
+            if not turning_left and not turning_right and not turning_backwards:
                 return
 
             if not self.consume_turning_energy(state.get_step()):
                 return
 
-            if Input.is_action_pressed("turn_left"):
+            if turning_left:
                 state.angular_velocity = Vector3.ZERO
                 state.transform.basis = state.transform.basis.rotated(Vector3.DOWN, -self.ship_def.torque * state.get_step())
-            if Input.is_action_pressed("turn_right"):
+            if turning_right:
                 state.angular_velocity = Vector3.ZERO
                 state.transform.basis = state.transform.basis.rotated(Vector3.DOWN, self.ship_def.torque * state.get_step())
+            if turning_backwards:
+                var desired_basis = Basis.looking_at( - self.linear_velocity.normalized())
+
+                state.angular_velocity = Vector3.ZERO
+                state.transform.basis = state.transform.basis.slerp(desired_basis, self.ship_def.torque * state.get_step())
 
         UserPreferences.ControlScheme.ABSOLUTE:
             var desired_direction := self._absolute_input_direction()