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) 2017-2020 Vincent Quatrevieux

 */

package fr.quatrevieux.araknemu.game.fight.ai.action;

import fr.quatrevieux.araknemu.game.fight.ai.AI;

import fr.quatrevieux.araknemu.game.fight.ai.simulation.Simulator;

import fr.quatrevieux.araknemu.game.fight.fighter.ActiveFighter;

import fr.quatrevieux.araknemu.game.fight.turn.action.Action;

import fr.quatrevieux.araknemu.game.fight.turn.action.factory.ActionsFactory;

import java.util.Optional;

/**

 * Try to move for perform an attack

 *

 * The nearest cell for perform an attack is selected.

 * If the current cell permit attacking, the fighter will not perform any move.

 *

 * For select the cell, the generator will iterate over all reachable cells

 * with the current amount of MPs, sort them by distance,

 * and check all spells on all available cells.

 * The first matching cell is selected.

 */

public final class MoveToAttack<F extends ActiveFighter> implements ActionGenerator<F> {

    private final MoveToCast<F> generator;

    private final Attack<F> attack;

    private MoveToAttack(Simulator simulator, MoveToCast.TargetSelectionStrategy<F> strategy) {

        this.attack = new Attack<>(simulator);

        this.generator = new MoveToCast<>(simulator, attack, strategy);

    }

    @Override

    public void initialize(AI<F> ai) {

        attack.initialize(ai);

        generator.initialize(ai);

    }

    /**

     * Select the nearest cell where a cast is possible

     *

     * Note: This selected cell is not the best cell for perform an attack, but the nearest cell.

     *       So, it do not perform the best move for maximize damage.

     */

    public static <F extends ActiveFighter> MoveToAttack<F> nearest(Simulator simulator) {

        return new MoveToAttack<>(simulator, new MoveToCast.NearestStrategy<>());

    }

    /**

     * Select the best target cell for cast a spell, and maximizing damage

     */

    public static <F extends ActiveFighter> MoveToAttack<F> bestTarget(Simulator simulator) {

        return new MoveToAttack<>(simulator, new MoveToCast.BestTargetStrategy<>());

    }

}