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.effect;

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

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

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

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

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

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

import java.util.Collections;

import java.util.HashMap;

import java.util.Map;

import java.util.Set;

/**

 * Handle fight effects

 */

public final class EffectsHandler {

    private final Map<Integer, EffectHandler> handlers = new HashMap<>();

    public void register(int effectId, EffectHandler applier) {

        handlers.put(effectId, applier);

    }

    /**

     * Apply a cast to the fight

     *

     * First, this method will call {@link fr.quatrevieux.araknemu.game.fight.castable.effect.buff.BuffHook#onCast(Buff, FightCastScope)} to caster

     * Then call {@link fr.quatrevieux.araknemu.game.fight.castable.effect.buff.BuffHook#onCastTarget(Buff, FightCastScope)} to all targets

     *

     * After that, all effects will be applied by calling :

     * - {@link EffectHandler#handle(FightCastScope, FightCastScope.EffectScope)} if duration is 0

     * - {@link EffectHandler#buff(FightCastScope, FightCastScope.EffectScope)} if the effect has a duration

     */

    public void apply(FightCastScope cast) {

        cast.caster().buffs().onCast(cast);

        applyCastTarget(cast);

        for (FightCastScope.EffectScope effect : cast.effects()) {

            final EffectHandler handler = handlers.get(effect.effect().effect());

            if (handler != null) {

                if (effect.effect().duration() == 0) {

                    handler.handle(cast, effect);

                } else {

                    handler.buff(cast, effect);

                }

            }

        }

    }

    /**

     * Call {@link fr.quatrevieux.araknemu.game.fight.castable.effect.buff.Buffs#onCastTarget(FightCastScope)}

     * on each target.

     *

     * If a target is changed (by calling {@link CastScope#replaceTarget(FighterData, FighterData)}),

     * new targets will also be called

     */

    }

}