public class MoveToBorder extends AbstractStrategy{ protected boolean IsTargetDestinaion() { var objParams = GetObjectParameters(); if (objParams == null) { return false; } return objParams.RightBorder <= FieldWidth && objParams.RightBorder + GetStep() >= FieldWidth && objParams.DownBorder <= FieldHeight && objParams.DownBorder + GetStep() >= FieldHeight; } protected void MoveToTarget() { var objParams = GetObjectParameters(); if (objParams == null) { return; } var diffX = objParams.RightBorder - FieldWidth; if (Math.abs(diffX) > GetStep()) { if (diffX > 0) { MoveLeft(); } else { MoveRight(); } } var diffY = objParams.DownBorder - FieldHeight; if (Math.abs(diffY) > GetStep()) { if (diffY > 0) { MoveUp(); } else { MoveDown(); } } } }