Buggy example

ActionType.nim

type ActionType* = enum
  NONE = 0
  CLEAR_AND_SELECT = 1
  ADD_TO_SELECTION = 2
  DESELECT = 3
  ASSIGN = 4
  DISMISS = 5
  DISBAND = 6
  MOVE = 7
  ROTATE = 8
  SCALE = 9
  SETUP_VEHICLE_PRODUCTION = 10

Move.nim

from VehicleType import VehicleType
from ActionType import ActionType

type Move* = object
  case exists*: bool
  of true:
    action*: ActionType
    group*: int32
    left*: float64
    top*: float64
    right*: float64
    bottom*: float64
    x*: float64
    y*: float64
    angle*: float64
    factor*: float64
    maxSpeed*: float64
    maxAngularSpeed*: float64
    vehicleType*: VehicleType
    facilityId*: int64
  else: discard

VehicleType.nim

type VehicleType* = enum
  ARRV = 0
  FIGHTER = 1
  HELICOPTER = 2
  IFV = 3
  TANK = 4