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Code Issues Releases Wiki Activity

Separate spell resistance

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This commit is contained in:
Capostrophic 2020-04-04 18:28:53 +03:00
parent 5973285446
commit db13984db0
8 changed files with 134 additions and 98 deletions
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2
apps/openmw/CMakeLists.txt
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@ -83,7 +83,7 @@ add_openmw_dir (mwclass
add_openmw_dir (mwmechanics
mechanicsmanagerimp stat creaturestats magiceffects movement actorutil
drawstate spells activespells npcstats aipackage aisequence aipursue alchemy aiwander aitravel aifollow aiavoiddoor aibreathe
aicast aiescort aiface aiactivate aicombat recharge repair enchanting pathfinding pathgrid security spellsuccess spellcasting
aicast aiescort aiface aiactivate aicombat recharge repair enchanting pathfinding pathgrid security spellcasting spellresistance
disease pickpocket levelledlist combat steering obstacle autocalcspell difficultyscaling aicombataction actor summoning
character actors objects aistate coordinateconverter trading weaponpriority spellpriority weapontype
)

1
apps/openmw/mwmechanics/combat.cpp
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@ -18,6 +18,7 @@
#include "npcstats.hpp"
#include "movement.hpp"
#include "spellcasting.hpp"
#include "spellresistance.hpp"
#include "difficultyscaling.hpp"
#include "actorutil.hpp"
#include "pathfinding.hpp"

78
apps/openmw/mwmechanics/spellcasting.cpp
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@ -28,6 +28,7 @@
#include "aifollow.hpp"
#include "weapontype.hpp"
#include "summoning.hpp"
#include "spellresistance.hpp"
namespace MWMechanics
{
@ -168,83 +169,6 @@ namespace MWMechanics
return spell && spellIncreasesSkill(spell);
}
float getEffectResistanceAttribute (short effectId, const MagicEffects* actorEffects)
{
short resistanceEffect = ESM::MagicEffect::getResistanceEffect(effectId);
short weaknessEffect = ESM::MagicEffect::getWeaknessEffect(effectId);
float resistance = 0;
if (resistanceEffect != -1)
resistance += actorEffects->get(resistanceEffect).getMagnitude();
if (weaknessEffect != -1)
resistance -= actorEffects->get(weaknessEffect).getMagnitude();
if (effectId == ESM::MagicEffect::FireDamage)
resistance += actorEffects->get(ESM::MagicEffect::FireShield).getMagnitude();
if (effectId == ESM::MagicEffect::ShockDamage)
resistance += actorEffects->get(ESM::MagicEffect::LightningShield).getMagnitude();
if (effectId == ESM::MagicEffect::FrostDamage)
resistance += actorEffects->get(ESM::MagicEffect::FrostShield).getMagnitude();
return resistance;
}
float getEffectResistance (short effectId, const MWWorld::Ptr& actor, const MWWorld::Ptr& caster,
const ESM::Spell* spell, const MagicEffects* effects)
{
const ESM::MagicEffect *magicEffect =
MWBase::Environment::get().getWorld()->getStore().get<ESM::MagicEffect>().find (
effectId);
const MWMechanics::CreatureStats& stats = actor.getClass().getCreatureStats(actor);
const MWMechanics::MagicEffects* magicEffects = &stats.getMagicEffects();
if (effects)
magicEffects = effects;
// Effects with no resistance attribute belonging to them can not be resisted
if (ESM::MagicEffect::getResistanceEffect(effectId) == -1)
return 0.f;
float resistance = getEffectResistanceAttribute(effectId, magicEffects);
int willpower = stats.getAttribute(ESM::Attribute::Willpower).getModified();
float luck = static_cast<float>(stats.getAttribute(ESM::Attribute::Luck).getModified());
float x = (willpower + 0.1f * luck) * stats.getFatigueTerm();
// This makes spells that are easy to cast harder to resist and vice versa
float castChance = 100.f;
if (spell != nullptr && !caster.isEmpty() && caster.getClass().isActor())
{
castChance = getSpellSuccessChance(spell, caster, nullptr, false, false); // Uncapped casting chance
}
if (castChance > 0)
x *= 50 / castChance;
float roll = Misc::Rng::rollClosedProbability() * 100;
if (magicEffect->mData.mFlags & ESM::MagicEffect::NoMagnitude)
roll -= resistance;
if (x <= roll)
x = 0;
else
{
if (magicEffect->mData.mFlags & ESM::MagicEffect::NoMagnitude)
x = 100;
else
x = roll / std::min(x, 100.f);
}
x = std::min(x + resistance, 100.f);
return x;
}
float getEffectMultiplier(short effectId, const MWWorld::Ptr& actor, const MWWorld::Ptr& caster,
const ESM::Spell* spell, const MagicEffects* effects)
{
float resistance = getEffectResistance(effectId, actor, caster, spell, effects);
return 1 - resistance / 100.f;
}
/// Check if the given effect can be applied to the target. If \a castByPlayer, emits a message box on failure.
bool checkEffectTarget (int effectId, const MWWorld::Ptr& target, const MWWorld::Ptr& caster, bool castByPlayer)
{

22
apps/openmw/mwmechanics/spellcasting.hpp
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@ -1,5 +1,5 @@
#ifndef MWMECHANICS_SPELLSUCCESS_H
#define MWMECHANICS_SPELLSUCCESS_H
#ifndef MWMECHANICS_SPELLCASTING_H
#define MWMECHANICS_SPELLCASTING_H
#include <components/esm/effectlist.hpp>
#include <components/esm/loadskil.hpp>
@ -46,24 +46,6 @@ namespace MWMechanics
bool spellIncreasesSkill(const ESM::Spell* spell);
bool spellIncreasesSkill(const std::string& spellId);
/// Get the resistance attribute against an effect for a given actor. This will add together
/// ResistX and Weakness to X effects relevant against the given effect.
float getEffectResistanceAttribute (short effectId, const MagicEffects* actorEffects);
/// Get the effective resistance against an effect casted by the given actor in the given spell (optional).
/// @return >=100 for fully resisted. can also return negative value for damage amplification.
/// @param effects Override the actor's current magicEffects. Useful if there are effects currently
/// being applied (but not applied yet) that should also be considered.
float getEffectResistance (short effectId, const MWWorld::Ptr& actor, const MWWorld::Ptr& caster,
const ESM::Spell* spell = nullptr, const MagicEffects* effects = nullptr);
/// Get an effect multiplier for applying an effect cast by the given actor in the given spell (optional).
/// @return effect multiplier from 0 to 2. (100% net resistance to 100% net weakness)
/// @param effects Override the actor's current magicEffects. Useful if there are effects currently
/// being applied (but not applied yet) that should also be considered.
float getEffectMultiplier(short effectId, const MWWorld::Ptr& actor, const MWWorld::Ptr& caster,
const ESM::Spell* spell = nullptr, const MagicEffects* effects = nullptr);
bool checkEffectTarget (int effectId, const MWWorld::Ptr& target, const MWWorld::Ptr& caster, bool castByPlayer);
int getEffectiveEnchantmentCastCost (float castCost, const MWWorld::Ptr& actor);

1
apps/openmw/mwmechanics/spellpriority.cpp
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@ -16,6 +16,7 @@
#include "creaturestats.hpp"
#include "spellcasting.hpp"
#include "spellresistance.hpp"
#include "weapontype.hpp"
#include "combat.hpp"
#include "summoning.hpp"

90
apps/openmw/mwmechanics/spellresistance.cpp Normal file
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@ -0,0 +1,90 @@
#include "spellresistance.hpp"
#include <components/misc/rng.hpp>
#include "../mwbase/environment.hpp"
#include "../mwbase/world.hpp"
#include "../mwworld/class.hpp"
#include "../mwworld/esmstore.hpp"
#include "creaturestats.hpp"
#include "spellcasting.hpp"
namespace MWMechanics
{
float getEffectMultiplier(short effectId, const MWWorld::Ptr& actor, const MWWorld::Ptr& caster,
const ESM::Spell* spell, const MagicEffects* effects)
{
float resistance = getEffectResistance(effectId, actor, caster, spell, effects);
return 1 - resistance / 100.f;
}
float getEffectResistance (short effectId, const MWWorld::Ptr& actor, const MWWorld::Ptr& caster,
const ESM::Spell* spell, const MagicEffects* effects)
{
// Effects with no resistance attribute belonging to them can not be resisted
if (ESM::MagicEffect::getResistanceEffect(effectId) == -1)
return 0.f;
const auto magicEffect = MWBase::Environment::get().getWorld()->getStore().get<ESM::MagicEffect>().find(effectId);
const MWMechanics::CreatureStats& stats = actor.getClass().getCreatureStats(actor);
const MWMechanics::MagicEffects* magicEffects = &stats.getMagicEffects();
if (effects)
magicEffects = effects;
float resistance = getEffectResistanceAttribute(effectId, magicEffects);
int willpower = stats.getAttribute(ESM::Attribute::Willpower).getModified();
float luck = static_cast<float>(stats.getAttribute(ESM::Attribute::Luck).getModified());
float x = (willpower + 0.1f * luck) * stats.getFatigueTerm();
// This makes spells that are easy to cast harder to resist and vice versa
float castChance = 100.f;
if (spell != nullptr && !caster.isEmpty() && caster.getClass().isActor())
castChance = getSpellSuccessChance(spell, caster, nullptr, false, false); // Uncapped casting chance
if (castChance > 0)
x *= 50 / castChance;
float roll = Misc::Rng::rollClosedProbability() * 100;
if (magicEffect->mData.mFlags & ESM::MagicEffect::NoMagnitude)
roll -= resistance;
if (x <= roll)
x = 0;
else
{
if (magicEffect->mData.mFlags & ESM::MagicEffect::NoMagnitude)
x = 100;
else
x = roll / std::min(x, 100.f);
}
x = std::min(x + resistance, 100.f);
return x;
}
float getEffectResistanceAttribute (short effectId, const MagicEffects* actorEffects)
{
short resistanceEffect = ESM::MagicEffect::getResistanceEffect(effectId);
short weaknessEffect = ESM::MagicEffect::getWeaknessEffect(effectId);
float resistance = 0;
if (resistanceEffect != -1)
resistance += actorEffects->get(resistanceEffect).getMagnitude();
if (weaknessEffect != -1)
resistance -= actorEffects->get(weaknessEffect).getMagnitude();
if (effectId == ESM::MagicEffect::FireDamage)
resistance += actorEffects->get(ESM::MagicEffect::FireShield).getMagnitude();
if (effectId == ESM::MagicEffect::ShockDamage)
resistance += actorEffects->get(ESM::MagicEffect::LightningShield).getMagnitude();
if (effectId == ESM::MagicEffect::FrostDamage)
resistance += actorEffects->get(ESM::MagicEffect::FrostShield).getMagnitude();
return resistance;
}
}

37
apps/openmw/mwmechanics/spellresistance.hpp Normal file
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@ -0,0 +1,37 @@
#ifndef MWMECHANICS_SPELLRESISTANCE_H
#define MWMECHANICS_SPELLRESISTANCE_H
namespace ESM
{
struct Spell;
}
namespace MWWorld
{
class Ptr;
}
namespace MWMechanics
{
class MagicEffects;
/// Get an effect multiplier for applying an effect cast by the given actor in the given spell (optional).
/// @return effect multiplier from 0 to 2. (100% net resistance to 100% net weakness)
/// @param effects Override the actor's current magicEffects. Useful if there are effects currently
/// being applied (but not applied yet) that should also be considered.
float getEffectMultiplier(short effectId, const MWWorld::Ptr& actor, const MWWorld::Ptr& caster,
const ESM::Spell* spell = nullptr, const MagicEffects* effects = nullptr);
/// Get the effective resistance against an effect casted by the given actor in the given spell (optional).
/// @return >=100 for fully resisted. can also return negative value for damage amplification.
/// @param effects Override the actor's current magicEffects. Useful if there are effects currently
/// being applied (but not applied yet) that should also be considered.
float getEffectResistance (short effectId, const MWWorld::Ptr& actor, const MWWorld::Ptr& caster,
const ESM::Spell* spell = nullptr, const MagicEffects* effects = nullptr);
/// Get the resistance attribute against an effect for a given actor. This will add together
/// ResistX and Weakness to X effects relevant against the given effect.
float getEffectResistanceAttribute (short effectId, const MagicEffects* actorEffects);
}
#endif

1
apps/openmw/mwworld/inventorystore.cpp
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@ -14,6 +14,7 @@
#include "../mwmechanics/npcstats.hpp"
#include "../mwmechanics/spellcasting.hpp"
#include "../mwmechanics/spellresistance.hpp"
#include "../mwmechanics/actorutil.hpp"
#include "../mwmechanics/weapontype.hpp"