public abstract class AbstractStrategy {
    private IMoveableObject _moveableObject;
    private Status _state = Status.NotInit;
    protected int FieldWidth;
    protected int FieldHeight;
    public Status GetStatus() { return _state; }
    public void SetData(IMoveableObject moveableObject, int width, int
            height)
    {
        if (moveableObject == null)
        {
            _state = Status.NotInit;
            return;
        }
        _state = Status.InProgress;
        _moveableObject = moveableObject;
        FieldWidth = width;
        FieldHeight = height;
    }
    public void MakeStep()
    {
        if (_state != Status.InProgress)
        {
            return;
        }
        if (IsTargetDestinaion())
        {
            _state = Status.Finish;
            return;
        }
        MoveToTarget();
    }
    protected boolean MoveLeft() { return MoveTo(Direction.Left);};
    protected boolean MoveRight(){return MoveTo(Direction.Right);}
    protected boolean MoveUp(){return MoveTo(Direction.Up);}
    protected boolean MoveDown(){return MoveTo(Direction.Down);}
    protected ObjectParameters GetObjectParameters(){
        if (_moveableObject != null) {
            return _moveableObject.GetObjectPosition();
        }
        else {
            return null;
        }
    }
    protected int GetStep()
    {
        if (_state != Status.InProgress)
        {
            return Integer.parseInt(null);
        }
        return _moveableObject.GetStep();
    }
    protected abstract void MoveToTarget();
    protected abstract boolean IsTargetDestinaion();
    private boolean MoveTo(Direction directionType)
    {
        if (_state != Status.InProgress)
        {
            return false;
        }
        if (_moveableObject.CheckCanMove(directionType))
        {
            _moveableObject.MoveObject(directionType);
            return true;
        }
        else {
            return false;
        }
    }
}