using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ProjectCruiser.MoveStrategy;

public class MoveToBorder : AbstractStrategy
{
    protected override bool IsTargetDestination()
    {
        ObjParameters? objP = GetObjectParameters;
        if (objP == null)
        {
            return false;
        }

        return FieldWidth - GetStep() < objP.RightBorder
            && FieldHeight - GetStep() < objP.DownBorder;
    }

    protected override void MoveToTarget()
    {
        ObjParameters? objP = GetObjectParameters;
        if (objP == null)
        {
            return;
        }

        int s = (int)GetStep();

        int diffx = objP.RightBorder - FieldWidth;
        if (Math.Abs(diffx) > GetStep())
        {
            if (diffx > 0)
            {
                MoveLeft();
            }
            else { MoveRight(); }
        }

        int diffy = objP.DownBorder - FieldHeight; // (... - s) - step unnecessary
        if (Math.Abs(diffy) > GetStep())
        {
            if (diffy > 0)
            {
                MoveUp();
            }
            else { MoveDown(); }
        }
    }
}