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) 2017-2021 Vincent Quatrevieux

 */

package fr.quatrevieux.araknemu.game.fight.castable.effect.handler.characteristic.point;

import fr.quatrevieux.araknemu.game.fight.Fight;

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

import fr.quatrevieux.araknemu.game.fight.castable.effect.buff.Buff;

import fr.quatrevieux.araknemu.game.fight.castable.effect.buff.BuffEffect;

import fr.quatrevieux.araknemu.game.fight.castable.effect.handler.EffectHandler;

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

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

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

import fr.quatrevieux.araknemu.game.spell.effect.SpellEffect;

/**

 * Base effect for steal turn points

 *

 * @see StealActionPointHandler

 * @see StealMovementPointHandler

 */

public abstract class AbstractStealPointHandler implements EffectHandler {

    private final Fight fight;

    private final AbstractPointLostApplier removePointApplier;

    private final AlterPointHook addPointHook;

    private final int addPointEffect;

    /**

     * @param fight Fight where the effect will be applied

     * @param removePointApplier Applied use to remove points from targets

     * @param addPointHook Applied use to add points to caster

     * @param addPointEffect Effect id used by the "add point" buff

     */

    public AbstractStealPointHandler(Fight fight, AbstractPointLostApplier removePointApplier, AlterPointHook addPointHook, int addPointEffect) {

        this.fight = fight;

        this.removePointApplier = removePointApplier;

        this.addPointHook = addPointHook;

        this.addPointEffect = addPointEffect;

    }

    @Override

    public void handle(CastScope cast, CastScope.EffectScope effect) {

        final ActiveFighter caster = cast.caster();

        final int stolen = apply(cast, effect);

        if (stolen > 0) {

            fight.turnList().current()

                .filter(turn -> turn.fighter().equals(caster))

                .ifPresent(turn -> applyOnCurrentTurn(fight, turn, caster, stolen))

            ;

        }

    }

    @Override

    public void buff(CastScope cast, CastScope.EffectScope effect) {

        final ActiveFighter caster = cast.caster();

        final int stolen = apply(cast, effect);

        if (stolen > 0) {

            caster.buffs().add(

                new Buff(

                    BuffEffect.withCustomEffect(effect.effect(), addPointEffect, stolen),

                    cast.action(),

                    caster,

                    caster,

                    addPointHook

                )

            );

        }

    }

    /**

     * Apply the add point effect to the current turn

     * This method is called only if the effect is used as direct effect (i.e. without duration)

     * This method should update turn points and send to client the current turn point modification

     *

     * @param fight The active fight

     * @param turn The active turn

     * @param toAdd Number of points to add. This value is always >= 1

     */

    protected abstract void applyOnCurrentTurn(Fight fight, Turn turn, ActiveFighter caster, int toAdd);

    /**

     * Apply to all targets and compute the stolen points

     *

     * @return Stolen action points. 0 if target has dodged

     */

}