package DoubleDeckerBus.MovementStrategy;

public class MoveToCenter extends AbstractStrategy{
    @Override
    protected boolean IsTargetDestination() {
        ObjectParameters objParams = GetObjectParameters();

        if (objParams == null) {
            return false;
        }

        return ((objParams.ObjectMiddleHorizontal <= FieldWidth() / 2 &&
                objParams.ObjectMiddleHorizontal + GetStep() >= FieldWidth() / 2) ||
                (objParams.ObjectMiddleHorizontal >= FieldWidth() / 2 &&
                        objParams.ObjectMiddleHorizontal - GetStep() <= FieldWidth() / 2)) &&

                ((objParams.ObjectMiddleVertical <= FieldHeight() / 2 &&
                        objParams.ObjectMiddleVertical + GetStep() >= FieldHeight() / 2) ||
                        (objParams.ObjectMiddleVertical >= FieldHeight() / 2 &&
                                objParams.ObjectMiddleVertical - GetStep() <= FieldHeight() / 2));
    }

    @Override
    protected void MoveToTarget() {
        ObjectParameters objParams = GetObjectParameters();

        if (objParams == null) {
            return;
        }

        int diffX = objParams.ObjectMiddleHorizontal - FieldWidth() / 2;
        if (Math.abs(diffX) > GetStep()) {
            if (diffX > 0) {
                MoveLeft();
            }
            else {
                MoveRight();
            }
        }
        int diffY = objParams.ObjectMiddleVertical - FieldHeight() / 2;
        if (Math.abs(diffY) > GetStep()) {
            if (diffY > 0) {
                MoveUp();
            }
            else {
                MoveDown();
            }
        }
    }
}