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.turn.action.util;

import fr.arakne.utils.value.helper.RandomUtil;

import fr.quatrevieux.araknemu.data.constant.Characteristic;

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

import org.checkerframework.checker.index.qual.NonNegative;

import org.checkerframework.checker.index.qual.Positive;

/**

 * Base algorithm for compute criticality

 */

public final class BaseCriticalityStrategy implements CriticalityStrategy {

    private final RandomUtil random = new RandomUtil();

    @Override

    public @Positive int hitRate(ActiveFighter fighter, int base) {

        if (base <= 2) {

            return Math.max(base, 1);

        }

        base -= fighter.characteristics().get(Characteristic.CRITICAL_BONUS);

        final int agility = Math.max(fighter.characteristics().get(Characteristic.AGILITY), 0);

        return Math.max(rate, 2);

    }

    @Override

    public boolean hit(ActiveFighter fighter, @NonNegative int baseRate) {

        if (baseRate < 2) { // No criticality

            return false;

        }

        return random.reverseBool(hitRate(fighter, baseRate));

    }

    @Override

    public boolean failed(ActiveFighter fighter, @NonNegative int baseRate) {

        return baseRate > 0 && random.reverseBool(failureRate(fighter, baseRate));

    }

}