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.spell.effect;

import fr.quatrevieux.araknemu.data.value.EffectArea;

import fr.quatrevieux.araknemu.data.value.SpellTemplateEffect;

import fr.quatrevieux.araknemu.game.spell.effect.area.CellArea;

import fr.quatrevieux.araknemu.game.spell.effect.area.CheckboardArea;

import fr.quatrevieux.araknemu.game.spell.effect.area.CircleArea;

import fr.quatrevieux.araknemu.game.spell.effect.area.CrossArea;

import fr.quatrevieux.araknemu.game.spell.effect.area.LineArea;

import fr.quatrevieux.araknemu.game.spell.effect.area.PerpendicularLineArea;

import fr.quatrevieux.araknemu.game.spell.effect.area.RingArea;

import fr.quatrevieux.araknemu.game.spell.effect.area.SpellEffectArea;

import fr.quatrevieux.araknemu.game.spell.effect.target.SpellEffectTarget;

import java.util.ArrayList;

import java.util.EnumMap;

import java.util.List;

import java.util.Map;

import java.util.NoSuchElementException;

import java.util.function.Function;

/**

 * Handle spell effects

 */

public final class SpellEffectService {

    private final Map<EffectArea.Type, Function<EffectArea, SpellEffectArea>> areaFactories;

    public SpellEffectService() {

        this(new EnumMap<>(EffectArea.Type.class));

        areaFactories.put(EffectArea.Type.CELL, area -> CellArea.INSTANCE);

        areaFactories.put(EffectArea.Type.CIRCLE, CircleArea::new);

        areaFactories.put(EffectArea.Type.LINE, LineArea::new);

        areaFactories.put(EffectArea.Type.CROSS, CrossArea::new);

        areaFactories.put(EffectArea.Type.PERPENDICULAR_LINE, PerpendicularLineArea::new);

        areaFactories.put(EffectArea.Type.RING, RingArea::new);

        areaFactories.put(EffectArea.Type.CHECKERBOARD, CheckboardArea::new);

    }

    /**

     * Make the spell effect

     *

     * @param template The effect template

     * @param area The effect area

     * @param target The effect target filter

     */

    public SpellEffect make(SpellTemplateEffect template, EffectArea area, SpellEffectTarget target) {

        return new SpellTemplateEffectAdapter(template, area(area), target);

    }

    /**

     * Make an effect list

     *

     * @param templates List of effects

     * @param areas The effects areas

     * @param targets The effects targets

     */

    public List<SpellEffect> makeAll(List<SpellTemplateEffect> templates, List<EffectArea> areas, int[] targets) {

        final List<SpellEffect> effects = new ArrayList<>(templates.size());

        for (int i = 0; i < templates.size(); ++i) {

            effects.add(make(templates.get(i), areas.get(i), targets.length > i ? new SpellEffectTarget(targets[i]) : SpellEffectTarget.DEFAULT));

        }

        return effects;

    }

    /**

     * Create the spell effect area from area data

     *

     * @param area The effect area data

     */

    public SpellEffectArea area(EffectArea area) {

        if (!areaFactories.containsKey(area.type())) {

            throw new NoSuchElementException("Effect area " + area + " not available");

        }

        return areaFactories.get(area.type()).apply(area);

    }

}