private IEnumerable<MoveUnitEvent> GetWalkEvents(WalkGroup walkGroup)
 {
     var targetPosition = GetTargetPosition(walkGroup);
     return walkGroup.Content.AsParallel().Select(x => GetMoveUnitEvent(x, targetPosition));
 }
 private Vector2 GetTargetPosition(WalkGroup walkGroup)
 {
     var units = walkGroup.Content;
     var firstPos = units.First().Position;
     var lastPos = units.First().Position;
     return _vector2Service.GetAbsolute(firstPos, _vector2Service.GetRelativeMovementForPercent(_vector2Service.GetRelativeMovement(firstPos, lastPos), (float) .5));
 }