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/* |
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* This file is part of Araknemu. |
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* |
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* Araknemu is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* Araknemu is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with Araknemu. If not, see <https://www.gnu.org/licenses/>. |
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* |
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* Copyright (c) 2017-2021 Vincent Quatrevieux |
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*/ |
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package fr.quatrevieux.araknemu.game.fight.castable.effect.handler.characteristic.point; |
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import fr.arakne.utils.value.helper.RandomUtil; |
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import fr.quatrevieux.araknemu.data.constant.Characteristic; |
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import fr.quatrevieux.araknemu.game.fight.Fight; |
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import fr.quatrevieux.araknemu.game.fight.castable.FightCastScope; |
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import fr.quatrevieux.araknemu.game.fight.castable.effect.EffectValue; |
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import fr.quatrevieux.araknemu.game.fight.castable.effect.buff.Buff; |
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import fr.quatrevieux.araknemu.game.fight.castable.effect.buff.BuffEffect; |
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import fr.quatrevieux.araknemu.game.fight.fighter.Fighter; |
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import fr.quatrevieux.araknemu.game.fight.fighter.FighterData; |
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import fr.quatrevieux.araknemu.game.player.characteristic.ComputedCharacteristics; |
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import fr.quatrevieux.araknemu.game.spell.effect.SpellEffect; |
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import fr.quatrevieux.araknemu.network.game.out.fight.action.ActionEffect; |
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import org.checkerframework.checker.index.qual.NonNegative; |
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/** |
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* Compute and apply turn point lost (action or movement) |
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* |
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* Formula: ([current points] / [base points]) * ([caster wisdom / 10] / [target dodge]) * 1/2 |
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* Each removal will be considered (and computed) independently : 2 AP loose with one spell is equivalent to two spells with 1 AP loose |
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* |
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* See: https://forums.jeuxonline.info/sujet/801243/les-formules-de-calcul-dans-dofus#titre_7 |
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*/ |
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public abstract class AbstractPointLostApplier { |
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public static final int USE_SPELL_EFFECT = 0; |
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private final Fight fight; |
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private final AlterPointHook hook; |
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private final Characteristic characteristic; |
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private final Characteristic resistance; |
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private final int removalPointEffect; |
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private final RandomUtil random = new RandomUtil(); |
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protected AbstractPointLostApplier(Fight fight, AlterPointHook hook, Characteristic characteristic, Characteristic resistance, int removalPointEffect) { |
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this.fight = fight; |
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this.hook = hook; |
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this.characteristic = characteristic; |
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this.resistance = resistance; |
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this.removalPointEffect = removalPointEffect; |
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} |
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/** |
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* Apply the point lost effect |
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* |
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* A buff will be added and applied if the target do not dodge all points loose |
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* If the target dodge a point lost, a message will be sent to the fight |
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* |
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* @param cast The cast action |
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* @param target The fighter target |
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* @param effect Effect to apply |
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* |
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* @return Number of lost points |
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*/ |
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public final int apply(FightCastScope cast, Fighter target, SpellEffect effect) { |
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final Fighter caster = cast.caster(); |
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final int baseValue = EffectValue.create(effect, caster, target).value(); |
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final int lost = computePointLost(caster, target, baseValue); |
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final int dodge = baseValue - lost; |
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if (dodge > 0) { |
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fight.send(dodgeMessage(caster, target, dodge)); |
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} |
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if (lost > 0) { |
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target.buffs().add(new Buff(buffEffect(effect, lost), cast.action(), caster, target, hook)); |
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} |
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return lost; |
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} |
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/** |
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* The packet to send when the target dodge the point lost |
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*/ |
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protected abstract ActionEffect dodgeMessage(FighterData caster, FighterData target, int value); |
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/** |
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* Create the buff effect for the given point lost |
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*/ |
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private SpellEffect buffEffect(SpellEffect baseEffect, @NonNegative int pointLost) { |
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return removalPointEffect == USE_SPELL_EFFECT |
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? BuffEffect.fixed(baseEffect, pointLost) |
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: BuffEffect.withCustomEffect(baseEffect, removalPointEffect, pointLost) |
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; |
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} |
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/** |
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* Compute how many points will be loose |
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* |
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* @param caster The spell caster |
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* @param target The effect target |
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* @param value The base buff value |
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* |
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* @return Number of lost points. Can be 0 if dodge all loose, and cannot exceed value parameter. |
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*/ |
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private int computePointLost(FighterData caster, FighterData target, @NonNegative int value) { |
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final int maxPoints = target.characteristics().initial().get(this.characteristic); |
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final int currentPoints = target.characteristics().get(this.characteristic); |
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// Can't lose points anymore |
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if (currentPoints <= 0) { |
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return 0; |
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} |
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// The fighter has only boosted points (ignore division by 0) |
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if (maxPoints <= 0) { |
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return Math.min(currentPoints, value); |
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} |
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final int resistance = Math.max(target.characteristics().get(this.resistance), 1); |
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final int wisdom = Math.max(caster.characteristics().get(Characteristic.WISDOM) / ComputedCharacteristics.POINT_RESISTANCE_FACTOR, 1); |
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final int resistanceRate = 50 * wisdom / resistance; |
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int lost = 0; |
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// Compute point lost one by one |
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for (int i = 0; i < value; ++i) { |
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final int afterLost = currentPoints - lost; |
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// All points are lost |
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if (afterLost <= 0) { |
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break; |
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} |
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int chance = resistanceRate * afterLost / maxPoints; |
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// Bound chance between 10% and 90% |
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// See: https://web.archive.org/web/20100111082721/http://devblog.dofus.com/fr/billets/46-nouvelle-formule-esquive-equilibrage-xelor.html |
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chance = Math.min(chance, 90); |
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chance = Math.max(chance, 10); |
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if (random.bool(chance)) { |
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++lost; |
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} |
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} |
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return lost; |
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} |
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} |
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