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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) 2017-2022 Vincent Quatrevieux |
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*/ |
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package fr.quatrevieux.araknemu.game.fight.castable.effect.handler.misc; |
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import fr.quatrevieux.araknemu.game.fight.Fight; |
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import fr.quatrevieux.araknemu.game.fight.castable.CastScope; |
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import fr.quatrevieux.araknemu.game.fight.castable.FightCastScope; |
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import fr.quatrevieux.araknemu.game.fight.castable.Castable; |
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import fr.quatrevieux.araknemu.game.fight.castable.effect.EffectsUtils; |
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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.BuffHook; |
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import fr.quatrevieux.araknemu.game.fight.castable.effect.handler.EffectHandler; |
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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.spell.effect.SpellEffect; |
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import fr.quatrevieux.araknemu.network.game.out.fight.CellShown; |
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/** |
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* Handle invisibility effect |
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* |
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* This effect only works has buff : direct effect is not supported |
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* The hidden flag will be changed on buff start and termination |
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* |
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* When the fighter cast a spell or close combat attack, he will lose its invisibility if he performs direct damage. |
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* For other spells (or close combat) effects, the cast cell (i.e. current cell of the caster) will be shown to all fighters. |
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* |
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* Note: If two (or more) invisibility buffs are effective on a fighter, the invisibility state will be terminated |
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* with the last (i.e. longest) buff. |
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* |
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* @see FighterData#hidden() Check the hidden state |
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* @see Fighter#setHidden(FighterData, boolean) Called by the handler for change hidden state |
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*/ |
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public final class InvisibilityHandler implements EffectHandler, BuffHook { |
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private final Fight fight; |
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public InvisibilityHandler(Fight fight) { |
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this.fight = fight; |
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} |
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@Override |
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public void handle(FightCastScope cast, FightCastScope.EffectScope effect) { |
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throw new UnsupportedOperationException("Invisibility effect must be used as a buff"); |
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} |
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@Override |
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public void buff(FightCastScope cast, FightCastScope.EffectScope effect) { |
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final SpellEffect spellEffect = effect.effect(); |
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final Fighter caster = cast.caster(); |
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final Castable action = cast.action(); |
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for (Fighter target : effect.targets()) { |
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target.buffs().add(new Buff(spellEffect, action, caster, target, this)); |
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} |
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} |
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@Override |
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public void onBuffStarted(Buff buff) { |
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buff.target().setHidden(buff.caster(), true); |
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} |
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@Override |
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public void onBuffTerminated(Buff buff) { |
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final Fighter target = buff.target(); |
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// Set visible only if not yet visible and there is no other active invisibility buff |
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if (target.hidden() && !hasOtherInvisibilityBuff(target)) { |
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target.setHidden(buff.caster(), false); |
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} |
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} |
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@Override |
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public void onCast(Buff buff, FightCastScope cast) { |
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final Fighter target = buff.target(); |
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if (!target.hidden()) { |
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return; |
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} |
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// The fighter cast a damage effect : he loses its invisibility |
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if (hasDirectDamageEffect(cast)) { |
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target.setHidden(target, false); |
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return; |
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} |
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// Show cell only on the first buff |
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if (isFirstInvisibilityBuff(target, buff)) { |
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fight.send(new CellShown(target, target.cell().id())); |
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} |
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} |
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/** |
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* Check if another active invisibility buff is present |
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*/ |
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private boolean hasOtherInvisibilityBuff(FighterData fighter) { |
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for (Buff activeBuff : fighter.buffs()) { |
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// Another invisibility buff exists : do not set target visible |
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if (activeBuff.valid() && activeBuff.hook() == this) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Does the given cast will perform direct damage or not |
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*/ |
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private boolean hasDirectDamageEffect(FightCastScope cast) { |
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for (CastScope.EffectScope<Fighter> effect : cast.effects()) { |
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final SpellEffect spellEffect = effect.effect(); |
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if (spellEffect.duration() == 0 && EffectsUtils.isDamageEffect(spellEffect.effect())) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Check if the given buff is the first of the buff list |
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*/ |
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private boolean isFirstInvisibilityBuff(FighterData fighter, Buff currentBuff) { |
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for (Buff otherBuff : fighter.buffs()) { |
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if (otherBuff.hook() == this) { |
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// Current buff is not the first active invisibility buff |
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return otherBuff == currentBuff; |
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} |
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} |
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// Should not occur |
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return true; |
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} |
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} |
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Arakne /
Araknemu
