Arakne / ArakneUtils

 * This file is part of ArakneUtils.

 *

 * ArakneUtils is free software: you can redistribute it and/or modify

 * it under the terms of the GNU Lesser General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * ArakneUtils is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU Lesser General Public License for more details.

 *

 * You should have received a copy of the GNU Lesser General Public License

 * along with ArakneUtils.  If not, see <https://www.gnu.org/licenses/>.

 *

 * Copyright (c) 2017-2021 Vincent Quatrevieux

 */

package fr.arakne.utils.maps.sight;

import fr.arakne.utils.maps.BattlefieldCell;

import fr.arakne.utils.maps.CoordinateCell;

import java.util.Iterator;

/**

 * Line of sight iterator for cells with same X coordinate

 */

final class SameXLineOfSightIterator<C extends BattlefieldCell> implements Iterator<C> {

    private final BattlefieldSight<C> battlefield;

    private final CoordinateCell<C> source;

    private final CoordinateCell<C> target;

    private final int yDirection;

    private int currentY;

    @Override

    public boolean hasNext() {

        return target.y() != currentY;

    }

    @Override

        currentY += yDirection;

        return getCurrentCell();

    }

    /**

     * @return The cell on the current coordinates

     */

    private C getCurrentCell() {

        return battlefield.getCellByCoordinates(source.x(), currentY);

    }

}