protected virtual void DoWalk(RouteStep routeStep)
{
var currentCoordinates = new RoutePoint(XCoordinate, YCoordinate);
switch (_direction)
{
case Direction.Up:
YCoordinate += routeStep.Distance;
break;
case Direction.Down:
YCoordinate -= routeStep.Distance;
break;
case Direction.Left:
XCoordinate -= routeStep.Distance;
break;
case Direction.Right:
XCoordinate += routeStep.Distance;
break;
default:
throw new ArgumentOutOfRangeException();
}
var newCoordinates = new RoutePoint(XCoordinate, YCoordinate);
Links.Add(new RouteLink(currentCoordinates, newCoordinates));
}
private void ProcessStep(RouteStep routeStep)
{
// change direction
DoTurn(routeStep);
// walk distance
DoWalk(routeStep);
}
protected virtual void DoTurn(RouteStep routeStep)
{
switch (_direction)
{
case Direction.Up:
_direction = routeStep.Direction == RouteDirection.Left ? Direction.Left : Direction.Right;
break;
case Direction.Down:
_direction = routeStep.Direction == RouteDirection.Left ? Direction.Right : Direction.Left;
break;
case Direction.Left:
_direction = routeStep.Direction == RouteDirection.Left ? Direction.Down : Direction.Up;
break;
case Direction.Right:
_direction = routeStep.Direction == RouteDirection.Left ? Direction.Up : Direction.Down;
break;
default:
throw new ArgumentOutOfRangeException();
}
}