Arakne / Araknemu

 * This file is part of Araknemu.

 *

 * Araknemu 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.

 *

 * Araknemu 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 Araknemu.  If not, see <https://www.gnu.org/licenses/>.

 *

 * Copyright (c) 2017-2019 Vincent Quatrevieux

 */

package fr.quatrevieux.araknemu.game.fight.castable.validator;

import fr.quatrevieux.araknemu.game.fight.castable.Castable;

import fr.quatrevieux.araknemu.game.fight.map.FightCell;

import fr.quatrevieux.araknemu.game.fight.turn.Turn;

import fr.quatrevieux.araknemu.network.game.out.info.Error;

/**

 * Validate the target cell

 */

public final class TargetCellValidator implements CastConstraintValidator {

    @Override

    public Error validate(Turn turn, Castable castable, FightCell target) {

        if (!target.walkableIgnoreFighter()) {

            return Error.cantCastCellNotAvailable();

        }

        if (castable.constraints().freeCell() && target.fighter().isPresent()) {

            return Error.cantCastInvalidCell();

        }

        return null;

    }

}