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1ced0c912e
This reverts commit 80a25bcd3021f7ebfaf2f864e34532009b9b8aeb. It didn't really make sense to do all those changes in the same MR partially Revert "Store refactoring: more forgotten storeSpecialization.hpp" This reverts commit 9943a5bc96b9025f06cbaac5bb7f1bf51ebc746f. removed remaining references to storeSpecialization CMakeLists.txt, and landmanager.cpp
95 lines
3.5 KiB
C++
95 lines
3.5 KiB
C++
#include "spellresistance.hpp"
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#include <components/misc/rng.hpp>
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#include "../mwbase/environment.hpp"
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#include "../mwbase/world.hpp"
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#include "../mwworld/class.hpp"
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#include "../mwworld/esmstore.hpp"
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#include "creaturestats.hpp"
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#include "spellutil.hpp"
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namespace MWMechanics
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{
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float getEffectMultiplier(short effectId, const MWWorld::Ptr& actor, const MWWorld::Ptr& caster,
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const ESM::Spell* spell, const MagicEffects* effects)
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{
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if (!actor.getClass().isActor())
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return 1;
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float resistance = getEffectResistance(effectId, actor, caster, spell, effects);
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return 1 - resistance / 100.f;
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}
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float getEffectResistance (short effectId, const MWWorld::Ptr& actor, const MWWorld::Ptr& caster,
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const ESM::Spell* spell, const MagicEffects* effects)
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{
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// Effects with no resistance attribute belonging to them can not be resisted
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if (ESM::MagicEffect::getResistanceEffect(effectId) == -1)
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return 0.f;
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const auto magicEffect = MWBase::Environment::get().getWorld()->getStore().get<ESM::MagicEffect>().find(effectId);
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const MWMechanics::CreatureStats& stats = actor.getClass().getCreatureStats(actor);
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const MWMechanics::MagicEffects* magicEffects = &stats.getMagicEffects();
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if (effects)
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magicEffects = effects;
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float resistance = getEffectResistanceAttribute(effectId, magicEffects);
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float willpower = stats.getAttribute(ESM::Attribute::Willpower).getModified();
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float luck = stats.getAttribute(ESM::Attribute::Luck).getModified();
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float x = (willpower + 0.1f * luck) * stats.getFatigueTerm();
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// This makes spells that are easy to cast harder to resist and vice versa
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float castChance = 100.f;
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if (spell != nullptr && !caster.isEmpty() && caster.getClass().isActor())
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castChance = getSpellSuccessChance(spell, caster, nullptr, false, false); // Uncapped casting chance
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if (castChance > 0)
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x *= 50 / castChance;
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auto& prng = MWBase::Environment::get().getWorld()->getPrng();
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float roll = Misc::Rng::rollClosedProbability(prng) * 100;
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if (magicEffect->mData.mFlags & ESM::MagicEffect::NoMagnitude)
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roll -= resistance;
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if (x <= roll)
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x = 0;
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else
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{
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if (magicEffect->mData.mFlags & ESM::MagicEffect::NoMagnitude)
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x = 100;
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else
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x = roll / std::min(x, 100.f);
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}
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x = std::min(x + resistance, 100.f);
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return x;
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}
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float getEffectResistanceAttribute (short effectId, const MagicEffects* actorEffects)
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{
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short resistanceEffect = ESM::MagicEffect::getResistanceEffect(effectId);
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short weaknessEffect = ESM::MagicEffect::getWeaknessEffect(effectId);
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float resistance = 0;
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if (resistanceEffect != -1)
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resistance += actorEffects->get(resistanceEffect).getMagnitude();
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if (weaknessEffect != -1)
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resistance -= actorEffects->get(weaknessEffect).getMagnitude();
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if (effectId == ESM::MagicEffect::FireDamage)
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resistance += actorEffects->get(ESM::MagicEffect::FireShield).getMagnitude();
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if (effectId == ESM::MagicEffect::ShockDamage)
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resistance += actorEffects->get(ESM::MagicEffect::LightningShield).getMagnitude();
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if (effectId == ESM::MagicEffect::FrostDamage)
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resistance += actorEffects->get(ESM::MagicEffect::FrostShield).getMagnitude();
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return resistance;
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}
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}
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