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openmw-tes3mp/apps/openmw/mwmechanics/spellcasting.cpp

1123 lines
48 KiB
C++

#include "spellcasting.hpp"
#include <cfloat>
#include <limits>
#include <boost/format.hpp>
#include <components/misc/rng.hpp>
#include "../mwbase/windowmanager.hpp"
#include "../mwbase/soundmanager.hpp"
#include "../mwbase/mechanicsmanager.hpp"
#include "../mwbase/environment.hpp"
#include "../mwbase/world.hpp"
#include "../mwworld/containerstore.hpp"
#include "../mwworld/actionteleport.hpp"
#include "../mwworld/player.hpp"
#include "../mwworld/class.hpp"
#include "../mwworld/cellstore.hpp"
#include "../mwworld/esmstore.hpp"
#include "../mwworld/inventorystore.hpp"
#include "../mwrender/animation.hpp"
#include "magiceffects.hpp"
#include "npcstats.hpp"
#include "summoning.hpp"
#include "actorutil.hpp"
namespace
{
/// Get projectile properties (model, sound and speed) for a spell with the given effects
/// If \a model is empty, the spell has no ranged effects and should not spawn a projectile.
void getProjectileInfo (const ESM::EffectList& effects, std::string& model, std::string& sound, float& speed)
{
for (std::vector<ESM::ENAMstruct>::const_iterator iter (effects.mList.begin());
iter!=effects.mList.end(); ++iter)
{
if (iter->mRange != ESM::RT_Target)
continue;
const ESM::MagicEffect *magicEffect = MWBase::Environment::get().getWorld()->getStore().get<ESM::MagicEffect>().find (
iter->mEffectID);
model = magicEffect->mBolt;
if (model.empty())
model = "VFX_DefaultBolt";
static const std::string schools[] = {
"alteration", "conjuration", "destruction", "illusion", "mysticism", "restoration"
};
if (!magicEffect->mBoltSound.empty())
sound = magicEffect->mBoltSound;
else
sound = schools[magicEffect->mData.mSchool] + " bolt";
speed = magicEffect->mData.mSpeed;
break;
}
}
}
namespace MWMechanics
{
ESM::Skill::SkillEnum spellSchoolToSkill(int school)
{
std::map<int, ESM::Skill::SkillEnum> schoolSkillMap; // maps spell school to skill id
schoolSkillMap[0] = ESM::Skill::Alteration;
schoolSkillMap[1] = ESM::Skill::Conjuration;
schoolSkillMap[3] = ESM::Skill::Illusion;
schoolSkillMap[2] = ESM::Skill::Destruction;
schoolSkillMap[4] = ESM::Skill::Mysticism;
schoolSkillMap[5] = ESM::Skill::Restoration;
assert(schoolSkillMap.find(school) != schoolSkillMap.end());
return schoolSkillMap[school];
}
float getSpellSuccessChance (const ESM::Spell* spell, const MWWorld::Ptr& actor, int* effectiveSchool, bool cap)
{
CreatureStats& stats = actor.getClass().getCreatureStats(actor);
if (stats.getMagicEffects().get(ESM::MagicEffect::Silence).getMagnitude())
return 0;
float y = std::numeric_limits<float>::max();
float lowestSkill = 0;
for (std::vector<ESM::ENAMstruct>::const_iterator it = spell->mEffects.mList.begin(); it != spell->mEffects.mList.end(); ++it)
{
float x = static_cast<float>(it->mDuration);
const ESM::MagicEffect* magicEffect = MWBase::Environment::get().getWorld()->getStore().get<ESM::MagicEffect>().find(
it->mEffectID);
if (!(magicEffect->mData.mFlags & ESM::MagicEffect::UncappedDamage))
x = std::max(1.f, x);
x *= 0.1f * magicEffect->mData.mBaseCost;
x *= 0.5f * (it->mMagnMin + it->mMagnMax);
x *= it->mArea * 0.05f * magicEffect->mData.mBaseCost;
if (it->mRange == ESM::RT_Target)
x *= 1.5f;
static const float fEffectCostMult = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>().find(
"fEffectCostMult")->getFloat();
x *= fEffectCostMult;
float s = 2.0f * actor.getClass().getSkill(actor, spellSchoolToSkill(magicEffect->mData.mSchool));
if (s - x < y)
{
y = s - x;
if (effectiveSchool)
*effectiveSchool = magicEffect->mData.mSchool;
lowestSkill = s;
}
}
if (spell->mData.mType == ESM::Spell::ST_Power)
return stats.getSpells().canUsePower(spell) ? 100 : 0;
if (spell->mData.mType != ESM::Spell::ST_Spell)
return 100;
if (spell->mData.mFlags & ESM::Spell::F_Always)
return 100;
float castBonus = -stats.getMagicEffects().get(ESM::MagicEffect::Sound).getMagnitude();
int actorWillpower = stats.getAttribute(ESM::Attribute::Willpower).getModified();
int actorLuck = stats.getAttribute(ESM::Attribute::Luck).getModified();
float castChance = (lowestSkill - spell->mData.mCost + castBonus + 0.2f * actorWillpower + 0.1f * actorLuck) * stats.getFatigueTerm();
if (MWBase::Environment::get().getWorld()->getGodModeState() && actor == getPlayer())
castChance = 100;
if (!cap)
return std::max(0.f, castChance);
else
return std::max(0.f, std::min(100.f, castChance));
}
float getSpellSuccessChance (const std::string& spellId, const MWWorld::Ptr& actor, int* effectiveSchool, bool cap)
{
const ESM::Spell* spell =
MWBase::Environment::get().getWorld()->getStore().get<ESM::Spell>().find(spellId);
return getSpellSuccessChance(spell, actor, effectiveSchool, cap);
}
int getSpellSchool(const std::string& spellId, const MWWorld::Ptr& actor)
{
int school = 0;
getSpellSuccessChance(spellId, actor, &school);
return school;
}
int getSpellSchool(const ESM::Spell* spell, const MWWorld::Ptr& actor)
{
int school = 0;
getSpellSuccessChance(spell, actor, &school);
return school;
}
bool spellIncreasesSkill(const ESM::Spell *spell)
{
if (spell->mData.mType == ESM::Spell::ST_Spell && !(spell->mData.mFlags & ESM::Spell::F_Always))
return true;
return false;
}
bool spellIncreasesSkill(const std::string &spellId)
{
const ESM::Spell* spell =
MWBase::Environment::get().getWorld()->getStore().get<ESM::Spell>().find(spellId);
return 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;
float resisted = 0;
if (magicEffect->mData.mFlags & ESM::MagicEffect::Harmful)
{
// 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 != NULL && !caster.isEmpty() && caster.getClass().isActor())
{
castChance = getSpellSuccessChance(spell, caster, NULL, 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);
resisted = x;
}
return resisted;
}
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 affect can be applied to the target. If \a castByPlayer, emits a message box on failure.
bool checkEffectTarget (int effectId, const MWWorld::Ptr& target, bool castByPlayer)
{
switch (effectId)
{
case ESM::MagicEffect::Levitate:
if (!MWBase::Environment::get().getWorld()->isLevitationEnabled())
{
if (castByPlayer)
MWBase::Environment::get().getWindowManager()->messageBox("#{sLevitateDisabled}");
return false;
}
break;
case ESM::MagicEffect::Soultrap:
if (!target.getClass().isNpc() // no messagebox for NPCs
&& (target.getTypeName() == typeid(ESM::Creature).name() && target.get<ESM::Creature>()->mBase->mData.mSoul == 0))
{
if (castByPlayer)
MWBase::Environment::get().getWindowManager()->messageBox("#{sMagicInvalidTarget}");
return true; // must still apply to get visual effect and have target regard it as attack
}
break;
case ESM::MagicEffect::AlmsiviIntervention:
case ESM::MagicEffect::DivineIntervention:
case ESM::MagicEffect::Mark:
case ESM::MagicEffect::Recall:
if (!MWBase::Environment::get().getWorld()->isTeleportingEnabled())
{
if (castByPlayer)
MWBase::Environment::get().getWindowManager()->messageBox("#{sTeleportDisabled}");
return false;
}
break;
}
return true;
}
CastSpell::CastSpell(const MWWorld::Ptr &caster, const MWWorld::Ptr &target)
: mCaster(caster)
, mTarget(target)
, mStack(false)
, mHitPosition(0,0,0)
, mAlwaysSucceed(false)
{
}
void CastSpell::inflict(const MWWorld::Ptr &target, const MWWorld::Ptr &caster,
const ESM::EffectList &effects, ESM::RangeType range, bool reflected, bool exploded)
{
if (target.getClass().isActor() && target.getClass().getCreatureStats(target).isDead())
return;
// If none of the effects need to apply, we can early-out
bool found = false;
for (std::vector<ESM::ENAMstruct>::const_iterator iter (effects.mList.begin());
iter!=effects.mList.end(); ++iter)
{
if (iter->mRange == range)
{
found = true;
break;
}
}
if (!found)
return;
const ESM::Spell* spell = MWBase::Environment::get().getWorld()->getStore().get<ESM::Spell>().search (mId);
if (spell && (spell->mData.mType == ESM::Spell::ST_Disease || spell->mData.mType == ESM::Spell::ST_Blight))
{
int requiredResistance = (spell->mData.mType == ESM::Spell::ST_Disease) ?
ESM::MagicEffect::ResistCommonDisease
: ESM::MagicEffect::ResistBlightDisease;
float x = target.getClass().getCreatureStats(target).getMagicEffects().get(requiredResistance).getMagnitude();
if (Misc::Rng::roll0to99() <= x)
{
// Fully resisted, show message
if (target == getPlayer())
MWBase::Environment::get().getWindowManager()->messageBox("#{sMagicPCResisted}");
return;
}
}
ESM::EffectList reflectedEffects;
std::vector<ActiveSpells::ActiveEffect> appliedLastingEffects;
bool firstAppliedEffect = true;
bool anyHarmfulEffect = false;
// HACK: cache target's magic effects here, and add any applied effects to it. Use the cached effects for determining resistance.
// This is required for Weakness effects in a spell to apply to any subsequent effects in the spell.
// Otherwise, they'd only apply after the whole spell was added.
MagicEffects targetEffects;
if (target.getClass().isActor())
targetEffects += target.getClass().getCreatureStats(target).getMagicEffects();
bool castByPlayer = (!caster.isEmpty() && caster == getPlayer());
for (std::vector<ESM::ENAMstruct>::const_iterator effectIt (effects.mList.begin());
effectIt!=effects.mList.end(); ++effectIt)
{
if (effectIt->mRange != range)
continue;
const ESM::MagicEffect *magicEffect =
MWBase::Environment::get().getWorld()->getStore().get<ESM::MagicEffect>().find (
effectIt->mEffectID);
if (!checkEffectTarget(effectIt->mEffectID, target, castByPlayer))
continue;
// caster needs to be an actor for linked effects (e.g. Absorb)
if (magicEffect->mData.mFlags & ESM::MagicEffect::CasterLinked
&& (caster.isEmpty() || !caster.getClass().isActor()))
continue;
// If player is healing someone, show the target's HP bar
if (castByPlayer && target != caster
&& effectIt->mEffectID == ESM::MagicEffect::RestoreHealth
&& target.getClass().isActor())
MWBase::Environment::get().getWindowManager()->setEnemy(target);
// Try absorbing if it's a spell
// NOTE: Vanilla does this once per spell absorption effect source instead of adding the % from all sources together, not sure
// if that is worth replicating.
bool absorbed = false;
if (spell && caster != target && target.getClass().isActor())
{
float absorb = target.getClass().getCreatureStats(target).getMagicEffects().get(ESM::MagicEffect::SpellAbsorption).getMagnitude();
absorbed = (Misc::Rng::roll0to99() < absorb);
if (absorbed)
{
const ESM::Static* absorbStatic = MWBase::Environment::get().getWorld()->getStore().get<ESM::Static>().find ("VFX_Absorb");
MWBase::Environment::get().getWorld()->getAnimation(target)->addEffect(
"meshes\\" + absorbStatic->mModel, ESM::MagicEffect::SpellAbsorption, false, "");
// Magicka is increased by cost of spell
DynamicStat<float> magicka = target.getClass().getCreatureStats(target).getMagicka();
magicka.setCurrent(magicka.getCurrent() + spell->mData.mCost);
target.getClass().getCreatureStats(target).setMagicka(magicka);
}
}
float magnitudeMult = 1;
if (magicEffect->mData.mFlags & ESM::MagicEffect::Harmful && target.getClass().isActor())
{
anyHarmfulEffect = true;
if (absorbed) // Absorbed, and we know there was a harmful effect (figuring that out is the only reason we are in this loop)
break;
// If player is attempting to cast a harmful spell, show the target's HP bar
if (castByPlayer && target != caster)
MWBase::Environment::get().getWindowManager()->setEnemy(target);
// Try reflecting
if (!reflected && magnitudeMult > 0 && !caster.isEmpty() && caster != target && !(magicEffect->mData.mFlags & ESM::MagicEffect::Unreflectable))
{
float reflect = target.getClass().getCreatureStats(target).getMagicEffects().get(ESM::MagicEffect::Reflect).getMagnitude();
bool isReflected = (Misc::Rng::roll0to99() < reflect);
if (isReflected)
{
const ESM::Static* reflectStatic = MWBase::Environment::get().getWorld()->getStore().get<ESM::Static>().find ("VFX_Reflect");
MWBase::Environment::get().getWorld()->getAnimation(target)->addEffect(
"meshes\\" + reflectStatic->mModel, ESM::MagicEffect::Reflect, false, "");
reflectedEffects.mList.push_back(*effectIt);
magnitudeMult = 0;
}
}
// Try resisting
if (magnitudeMult > 0 && target.getClass().isActor())
{
magnitudeMult = MWMechanics::getEffectMultiplier(effectIt->mEffectID, target, caster, spell, &targetEffects);
if (magnitudeMult == 0)
{
// Fully resisted, show message
if (target == getPlayer())
MWBase::Environment::get().getWindowManager()->messageBox("#{sMagicPCResisted}");
else if (castByPlayer)
MWBase::Environment::get().getWindowManager()->messageBox("#{sMagicTargetResisted}");
}
}
}
if (magnitudeMult > 0 && !absorbed)
{
float random = Misc::Rng::rollClosedProbability();
float magnitude = effectIt->mMagnMin + (effectIt->mMagnMax - effectIt->mMagnMin) * random;
magnitude *= magnitudeMult;
if (!target.getClass().isActor())
{
// non-actor objects have no list of active magic effects, so have to apply instantly
if (!applyInstantEffect(target, caster, EffectKey(*effectIt), magnitude))
continue;
}
else // target.getClass().isActor() == true
{
bool hasDuration = !(magicEffect->mData.mFlags & ESM::MagicEffect::NoDuration);
if (hasDuration && effectIt->mDuration == 0)
{
// duration 0 means apply full magnitude instantly
bool wasDead = target.getClass().getCreatureStats(target).isDead();
effectTick(target.getClass().getCreatureStats(target), target, EffectKey(*effectIt), magnitude);
bool isDead = target.getClass().getCreatureStats(target).isDead();
if (!wasDead && isDead)
MWBase::Environment::get().getMechanicsManager()->actorKilled(target, caster);
}
else
{
// add to list of active effects, to apply in next frame
ActiveSpells::ActiveEffect effect;
effect.mEffectId = effectIt->mEffectID;
effect.mArg = MWMechanics::EffectKey(*effectIt).mArg;
effect.mDuration = static_cast<float>(effectIt->mDuration);
effect.mMagnitude = magnitude;
targetEffects.add(MWMechanics::EffectKey(*effectIt), MWMechanics::EffectParam(effect.mMagnitude));
appliedLastingEffects.push_back(effect);
// For absorb effects, also apply the effect to the caster - but with a negative
// magnitude, since we're transfering stats from the target to the caster
if (!caster.isEmpty() && caster.getClass().isActor())
{
for (int i=0; i<5; ++i)
{
if (effectIt->mEffectID == ESM::MagicEffect::AbsorbAttribute+i)
{
std::vector<ActiveSpells::ActiveEffect> effects;
ActiveSpells::ActiveEffect effect_ = effect;
effect_.mMagnitude *= -1;
effects.push_back(effect_);
// Also make sure to set casterActorId = target, so that the effect on the caster gets purged when the target dies
caster.getClass().getCreatureStats(caster).getActiveSpells().addSpell("", true,
effects, mSourceName, target.getClass().getCreatureStats(target).getActorId());
}
}
}
}
}
// Re-casting a summon effect will remove the creature from previous castings of that effect.
if (isSummoningEffect(effectIt->mEffectID) && !target.isEmpty() && target.getClass().isActor())
{
CreatureStats& targetStats = target.getClass().getCreatureStats(target);
std::map<CreatureStats::SummonKey, int>::iterator found = targetStats.getSummonedCreatureMap().find(std::make_pair(effectIt->mEffectID, mId));
if (found != targetStats.getSummonedCreatureMap().end())
{
cleanupSummonedCreature(targetStats, found->second);
targetStats.getSummonedCreatureMap().erase(found);
}
}
if (target.getClass().isActor() || magicEffect->mData.mFlags & ESM::MagicEffect::NoDuration)
{
// Play sound, only for the first effect
if (firstAppliedEffect)
{
static const std::string schools[] = {
"alteration", "conjuration", "destruction", "illusion", "mysticism", "restoration"
};
MWBase::SoundManager *sndMgr = MWBase::Environment::get().getSoundManager();
if(!magicEffect->mHitSound.empty())
sndMgr->playSound3D(target, magicEffect->mHitSound, 1.0f, 1.0f);
else
sndMgr->playSound3D(target, schools[magicEffect->mData.mSchool]+" hit", 1.0f, 1.0f);
firstAppliedEffect = false;
}
// Add VFX
const ESM::Static* castStatic;
if (!magicEffect->mHit.empty())
castStatic = MWBase::Environment::get().getWorld()->getStore().get<ESM::Static>().find (magicEffect->mHit);
else
castStatic = MWBase::Environment::get().getWorld()->getStore().get<ESM::Static>().find ("VFX_DefaultHit");
// TODO: VFX are no longer active after saving/reloading the game
bool loop = (magicEffect->mData.mFlags & ESM::MagicEffect::ContinuousVfx) != 0;
// Note: in case of non actor, a free effect should be fine as well
MWRender::Animation* anim = MWBase::Environment::get().getWorld()->getAnimation(target);
if (anim)
anim->addEffect("meshes\\" + castStatic->mModel, magicEffect->mIndex, loop, "");
}
}
}
if (!exploded)
MWBase::Environment::get().getWorld()->explodeSpell(mHitPosition, effects, caster, target, range, mId, mSourceName);
if (!reflectedEffects.mList.empty())
inflict(caster, target, reflectedEffects, range, true, exploded);
if (!appliedLastingEffects.empty())
{
int casterActorId = -1;
if (!caster.isEmpty() && caster.getClass().isActor())
casterActorId = caster.getClass().getCreatureStats(caster).getActorId();
target.getClass().getCreatureStats(target).getActiveSpells().addSpell(mId, mStack, appliedLastingEffects,
mSourceName, casterActorId);
}
// Notify the target actor they've been hit
if (anyHarmfulEffect && target.getClass().isActor() && target != caster && !caster.isEmpty() && caster.getClass().isActor())
target.getClass().onHit(target, 0.f, true, MWWorld::Ptr(), caster, true);
}
bool CastSpell::applyInstantEffect(const MWWorld::Ptr &target, const MWWorld::Ptr &caster, const MWMechanics::EffectKey& effect, float magnitude)
{
short effectId = effect.mId;
if (target.getClass().canLock(target))
{
if (effectId == ESM::MagicEffect::Lock)
{
if (target.getCellRef().getLockLevel() < magnitude) //If the door is not already locked to a higher value, lock it to spell magnitude
{
if (caster == getPlayer())
MWBase::Environment::get().getWindowManager()->messageBox("#{sMagicLockSuccess}");
target.getClass().lock(target, static_cast<int>(magnitude));
}
return true;
}
else if (effectId == ESM::MagicEffect::Open)
{
if (target.getCellRef().getLockLevel() <= magnitude)
{
if (target.getCellRef().getLockLevel() > 0)
{
MWBase::Environment::get().getSoundManager()->playSound3D(target, "Open Lock", 1.f, 1.f);
if (!caster.isEmpty() && caster.getClass().isActor())
MWBase::Environment::get().getMechanicsManager()->objectOpened(caster, target);
if (caster == getPlayer())
MWBase::Environment::get().getWindowManager()->messageBox("#{sMagicOpenSuccess}");
}
target.getClass().unlock(target);
}
else
MWBase::Environment::get().getSoundManager()->playSound3D(target, "Open Lock Fail", 1.f, 1.f);
return true;
}
}
else if (target.getClass().isActor())
{
switch (effectId)
{
case ESM::MagicEffect::CurePoison:
target.getClass().getCreatureStats(target).getActiveSpells().purgeEffect(ESM::MagicEffect::Poison);
return true;
case ESM::MagicEffect::CureParalyzation:
target.getClass().getCreatureStats(target).getActiveSpells().purgeEffect(ESM::MagicEffect::Paralyze);
return true;
case ESM::MagicEffect::CureCommonDisease:
target.getClass().getCreatureStats(target).getSpells().purgeCommonDisease();
return true;
case ESM::MagicEffect::CureBlightDisease:
target.getClass().getCreatureStats(target).getSpells().purgeBlightDisease();
return true;
case ESM::MagicEffect::CureCorprusDisease:
target.getClass().getCreatureStats(target).getSpells().purgeCorprusDisease();
return true;
case ESM::MagicEffect::Dispel:
target.getClass().getCreatureStats(target).getActiveSpells().purgeAll(magnitude);
return true;
case ESM::MagicEffect::RemoveCurse:
target.getClass().getCreatureStats(target).getSpells().purgeCurses();
return true;
}
if (target != getPlayer())
return false;
if (effectId == ESM::MagicEffect::DivineIntervention)
{
MWBase::Environment::get().getWorld()->teleportToClosestMarker(target, "divinemarker");
return true;
}
else if (effectId == ESM::MagicEffect::AlmsiviIntervention)
{
MWBase::Environment::get().getWorld()->teleportToClosestMarker(target, "templemarker");
return true;
}
else if (effectId == ESM::MagicEffect::Mark)
{
MWBase::Environment::get().getWorld()->getPlayer().markPosition(
target.getCell(), target.getRefData().getPosition());
return true;
}
else if (effectId == ESM::MagicEffect::Recall)
{
MWWorld::CellStore* markedCell = NULL;
ESM::Position markedPosition;
MWBase::Environment::get().getWorld()->getPlayer().getMarkedPosition(markedCell, markedPosition);
if (markedCell)
{
MWWorld::ActionTeleport action(markedCell->isExterior() ? "" : markedCell->getCell()->mName,
markedPosition, false);
action.execute(target);
}
return true;
}
}
return false;
}
bool CastSpell::cast(const std::string &id)
{
if (const ESM::Spell *spell =
MWBase::Environment::get().getWorld()->getStore().get<ESM::Spell>().search (id))
return cast(spell);
if (const ESM::Potion *potion =
MWBase::Environment::get().getWorld()->getStore().get<ESM::Potion>().search (id))
return cast(potion);
if (const ESM::Ingredient *ingredient =
MWBase::Environment::get().getWorld()->getStore().get<ESM::Ingredient>().search (id))
return cast(ingredient);
throw std::runtime_error("ID type cannot be casted");
}
bool CastSpell::cast(const MWWorld::Ptr &item, bool launchProjectile)
{
std::string enchantmentName = item.getClass().getEnchantment(item);
if (enchantmentName.empty())
throw std::runtime_error("can't cast an item without an enchantment");
mSourceName = item.getClass().getName(item);
mId = item.getCellRef().getRefId();
const ESM::Enchantment* enchantment = MWBase::Environment::get().getWorld()->getStore().get<ESM::Enchantment>().find(enchantmentName);
mStack = (enchantment->mData.mType == ESM::Enchantment::CastOnce);
// Check if there's enough charge left
if (enchantment->mData.mType == ESM::Enchantment::WhenUsed || enchantment->mData.mType == ESM::Enchantment::WhenStrikes)
{
const int castCost = getEffectiveEnchantmentCastCost(static_cast<float>(enchantment->mData.mCost), mCaster);
if (item.getCellRef().getEnchantmentCharge() == -1)
item.getCellRef().setEnchantmentCharge(static_cast<float>(enchantment->mData.mCharge));
if (item.getCellRef().getEnchantmentCharge() < castCost)
{
if (mCaster == getPlayer())
MWBase::Environment::get().getWindowManager()->messageBox("#{sMagicInsufficientCharge}");
// Failure sound
int school = 0;
if (!enchantment->mEffects.mList.empty())
{
short effectId = enchantment->mEffects.mList.front().mEffectID;
const ESM::MagicEffect* magicEffect = MWBase::Environment::get().getWorld()->getStore().get<ESM::MagicEffect>().find(effectId);
school = magicEffect->mData.mSchool;
}
static const std::string schools[] = {
"alteration", "conjuration", "destruction", "illusion", "mysticism", "restoration"
};
MWBase::SoundManager *sndMgr = MWBase::Environment::get().getSoundManager();
sndMgr->playSound3D(mCaster, "Spell Failure " + schools[school], 1.0f, 1.0f);
return false;
}
// Reduce charge
item.getCellRef().setEnchantmentCharge(item.getCellRef().getEnchantmentCharge() - castCost);
}
if (enchantment->mData.mType == ESM::Enchantment::WhenUsed)
{
if (mCaster == getPlayer())
mCaster.getClass().skillUsageSucceeded (mCaster, ESM::Skill::Enchant, 1);
}
if (enchantment->mData.mType == ESM::Enchantment::CastOnce)
item.getContainerStore()->remove(item, 1, mCaster);
else if (enchantment->mData.mType != ESM::Enchantment::WhenStrikes)
{
if (mCaster == getPlayer())
{
mCaster.getClass().skillUsageSucceeded (mCaster, ESM::Skill::Enchant, 3);
}
}
inflict(mCaster, mCaster, enchantment->mEffects, ESM::RT_Self);
if (!mTarget.isEmpty())
{
inflict(mTarget, mCaster, enchantment->mEffects, ESM::RT_Touch);
}
if (launchProjectile)
{
std::string projectileModel;
std::string sound;
float speed = 0;
getProjectileInfo(enchantment->mEffects, projectileModel, sound, speed);
if (!projectileModel.empty())
MWBase::Environment::get().getWorld()->launchMagicBolt(projectileModel, sound, mId, speed,
false, enchantment->mEffects, mCaster, mSourceName,
// Not needed, enchantments can only be cast by actors
osg::Vec3f(1,0,0));
}
else if (!mTarget.isEmpty())
inflict(mTarget, mCaster, enchantment->mEffects, ESM::RT_Target);
return true;
}
bool CastSpell::cast(const ESM::Potion* potion)
{
mSourceName = potion->mName;
mId = potion->mId;
mStack = true;
inflict(mCaster, mCaster, potion->mEffects, ESM::RT_Self);
return true;
}
bool CastSpell::cast(const ESM::Spell* spell)
{
mSourceName = spell->mName;
mId = spell->mId;
mStack = false;
const MWWorld::ESMStore& store = MWBase::Environment::get().getWorld()->getStore();
int school = 0;
if (mCaster.getClass().isActor() && !mAlwaysSucceed)
{
school = getSpellSchool(spell, mCaster);
CreatureStats& stats = mCaster.getClass().getCreatureStats(mCaster);
// Reduce fatigue (note that in the vanilla game, both GMSTs are 0, and there's no fatigue loss)
static const float fFatigueSpellBase = store.get<ESM::GameSetting>().find("fFatigueSpellBase")->getFloat();
static const float fFatigueSpellMult = store.get<ESM::GameSetting>().find("fFatigueSpellMult")->getFloat();
DynamicStat<float> fatigue = stats.getFatigue();
const float normalizedEncumbrance = mCaster.getClass().getNormalizedEncumbrance(mCaster);
float fatigueLoss = spell->mData.mCost * (fFatigueSpellBase + normalizedEncumbrance * fFatigueSpellMult);
fatigue.setCurrent(fatigue.getCurrent() - fatigueLoss); stats.setFatigue(fatigue);
bool fail = false;
// Check success
float successChance = getSpellSuccessChance(spell, mCaster);
if (Misc::Rng::roll0to99() >= successChance)
{
if (mCaster == getPlayer())
MWBase::Environment::get().getWindowManager()->messageBox("#{sMagicSkillFail}");
fail = true;
}
if (fail)
{
// Failure sound
static const std::string schools[] = {
"alteration", "conjuration", "destruction", "illusion", "mysticism", "restoration"
};
MWBase::SoundManager *sndMgr = MWBase::Environment::get().getSoundManager();
sndMgr->playSound3D(mCaster, "Spell Failure " + schools[school], 1.0f, 1.0f);
return false;
}
// A power can be used once per 24h
if (spell->mData.mType == ESM::Spell::ST_Power)
stats.getSpells().usePower(spell);
}
if (mCaster == getPlayer() && spellIncreasesSkill(spell))
mCaster.getClass().skillUsageSucceeded(mCaster,
spellSchoolToSkill(school), 0);
inflict(mCaster, mCaster, spell->mEffects, ESM::RT_Self);
if (!mTarget.isEmpty())
{
inflict(mTarget, mCaster, spell->mEffects, ESM::RT_Touch);
}
std::string projectileModel;
std::string sound;
float speed = 0;
getProjectileInfo(spell->mEffects, projectileModel, sound, speed);
if (!projectileModel.empty())
{
osg::Vec3f fallbackDirection (0,1,0);
// Fall back to a "caster to target" direction if we have no other means of determining it
// (e.g. when cast by a non-actor)
if (!mTarget.isEmpty())
fallbackDirection =
osg::Vec3f(mTarget.getRefData().getPosition().asVec3())-
osg::Vec3f(mCaster.getRefData().getPosition().asVec3());
MWBase::Environment::get().getWorld()->launchMagicBolt(projectileModel, sound, mId, speed,
false, spell->mEffects, mCaster, mSourceName, fallbackDirection);
}
return true;
}
bool CastSpell::cast (const ESM::Ingredient* ingredient)
{
mId = ingredient->mId;
mStack = true;
mSourceName = ingredient->mName;
ESM::ENAMstruct effect;
effect.mEffectID = ingredient->mData.mEffectID[0];
effect.mSkill = ingredient->mData.mSkills[0];
effect.mAttribute = ingredient->mData.mAttributes[0];
effect.mRange = ESM::RT_Self;
effect.mArea = 0;
const ESM::MagicEffect *magicEffect =
MWBase::Environment::get().getWorld()->getStore().get<ESM::MagicEffect>().find (
effect.mEffectID);
const MWMechanics::NpcStats& npcStats = mCaster.getClass().getNpcStats(mCaster);
const MWMechanics::CreatureStats& creatureStats = mCaster.getClass().getCreatureStats(mCaster);
float x = (npcStats.getSkill (ESM::Skill::Alchemy).getModified() +
0.2f * creatureStats.getAttribute (ESM::Attribute::Intelligence).getModified()
+ 0.1f * creatureStats.getAttribute (ESM::Attribute::Luck).getModified())
* creatureStats.getFatigueTerm();
int roll = Misc::Rng::roll0to99();
if (roll > x)
{
// "X has no effect on you"
std::string message = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>().find("sNotifyMessage50")->getString();
message = boost::str(boost::format(message) % ingredient->mName);
MWBase::Environment::get().getWindowManager()->messageBox(message);
return false;
}
float magnitude = 0;
float y = roll / std::min(x, 100.f);
y *= 0.25f * x;
if (magicEffect->mData.mFlags & ESM::MagicEffect::NoDuration)
effect.mDuration = static_cast<int>(y);
else
effect.mDuration = 1;
if (!(magicEffect->mData.mFlags & ESM::MagicEffect::NoMagnitude))
{
if (!(magicEffect->mData.mFlags & ESM::MagicEffect::NoDuration))
magnitude = floor((0.05f * y) / (0.1f * magicEffect->mData.mBaseCost));
else
magnitude = floor(y / (0.1f * magicEffect->mData.mBaseCost));
magnitude = std::max(1.f, magnitude);
}
else
magnitude = 1;
effect.mMagnMax = static_cast<int>(magnitude);
effect.mMagnMin = static_cast<int>(magnitude);
ESM::EffectList effects;
effects.mList.push_back(effect);
inflict(mCaster, mCaster, effects, ESM::RT_Self);
return true;
}
int getEffectiveEnchantmentCastCost(float castCost, const MWWorld::Ptr &actor)
{
/*
* Each point of enchant skill above/under 10 subtracts/adds
* one percent of enchantment cost while minimum is 1.
*/
int eSkill = actor.getClass().getSkill(actor, ESM::Skill::Enchant);
const float result = castCost - (castCost / 100) * (eSkill - 10);
return static_cast<int>((result < 1) ? 1 : result);
}
bool isSummoningEffect(int effectId)
{
return ((effectId >= ESM::MagicEffect::SummonScamp
&& effectId <= ESM::MagicEffect::SummonStormAtronach)
|| effectId == ESM::MagicEffect::SummonCenturionSphere
|| (effectId >= ESM::MagicEffect::SummonFabricant
&& effectId <= ESM::MagicEffect::SummonCreature05));
}
bool disintegrateSlot (MWWorld::Ptr ptr, int slot, float disintegrate)
{
if (ptr.getClass().hasInventoryStore(ptr))
{
MWWorld::InventoryStore& inv = ptr.getClass().getInventoryStore(ptr);
MWWorld::ContainerStoreIterator item =
inv.getSlot(slot);
if (item != inv.end() && (item.getType() == MWWorld::ContainerStore::Type_Armor || item.getType() == MWWorld::ContainerStore::Type_Weapon))
{
if (!item->getClass().hasItemHealth(*item))
return false;
int charge = item->getClass().getItemHealth(*item);
if (charge == 0)
return false;
// FIXME: charge should be a float, not int so that damage < 1 per frame can be applied.
// This was also a bug in the original engine.
charge -=
std::min(static_cast<int>(disintegrate),
charge);
item->getCellRef().setCharge(charge);
if (charge == 0)
{
// Will unequip the broken item and try to find a replacement
if (ptr != getPlayer())
inv.autoEquip(ptr);
else
inv.unequipItem(*item, ptr);
}
return true;
}
}
return false;
}
void adjustDynamicStat(CreatureStats& creatureStats, int index, float magnitude)
{
DynamicStat<float> stat = creatureStats.getDynamic(index);
stat.setCurrent(stat.getCurrent() + magnitude, index == 2);
creatureStats.setDynamic(index, stat);
}
void effectTick(CreatureStats& creatureStats, const MWWorld::Ptr& actor, const EffectKey &effectKey, float magnitude)
{
if (magnitude == 0.f)
return;
bool receivedMagicDamage = false;
switch (effectKey.mId)
{
case ESM::MagicEffect::DamageAttribute:
{
AttributeValue attr = creatureStats.getAttribute(effectKey.mArg);
attr.damage(magnitude);
creatureStats.setAttribute(effectKey.mArg, attr);
break;
}
case ESM::MagicEffect::RestoreAttribute:
{
AttributeValue attr = creatureStats.getAttribute(effectKey.mArg);
attr.restore(magnitude);
creatureStats.setAttribute(effectKey.mArg, attr);
break;
}
case ESM::MagicEffect::RestoreHealth:
case ESM::MagicEffect::RestoreMagicka:
case ESM::MagicEffect::RestoreFatigue:
adjustDynamicStat(creatureStats, effectKey.mId-ESM::MagicEffect::RestoreHealth, magnitude);
break;
case ESM::MagicEffect::DamageHealth:
case ESM::MagicEffect::DamageMagicka:
case ESM::MagicEffect::DamageFatigue:
receivedMagicDamage = true;
adjustDynamicStat(creatureStats, effectKey.mId-ESM::MagicEffect::DamageHealth, -magnitude);
break;
case ESM::MagicEffect::AbsorbHealth:
case ESM::MagicEffect::AbsorbMagicka:
case ESM::MagicEffect::AbsorbFatigue:
if (magnitude > 0.f)
receivedMagicDamage = true;
adjustDynamicStat(creatureStats, effectKey.mId-ESM::MagicEffect::AbsorbHealth, -magnitude);
break;
case ESM::MagicEffect::DisintegrateArmor:
{
// According to UESP
int priorities[] = {
MWWorld::InventoryStore::Slot_CarriedLeft,
MWWorld::InventoryStore::Slot_Cuirass,
MWWorld::InventoryStore::Slot_LeftPauldron,
MWWorld::InventoryStore::Slot_RightPauldron,
MWWorld::InventoryStore::Slot_LeftGauntlet,
MWWorld::InventoryStore::Slot_RightGauntlet,
MWWorld::InventoryStore::Slot_Helmet,
MWWorld::InventoryStore::Slot_Greaves,
MWWorld::InventoryStore::Slot_Boots
};
for (unsigned int i=0; i<sizeof(priorities)/sizeof(int); ++i)
{
if (disintegrateSlot(actor, priorities[i], magnitude))
break;
}
break;
}
case ESM::MagicEffect::DisintegrateWeapon:
disintegrateSlot(actor, MWWorld::InventoryStore::Slot_CarriedRight, magnitude);
break;
case ESM::MagicEffect::SunDamage:
{
// isInCell shouldn't be needed, but updateActor called during game start
if (!actor.isInCell() || !actor.getCell()->isExterior())
break;
float time = MWBase::Environment::get().getWorld()->getTimeStamp().getHour();
float timeDiff = std::min(7.f, std::max(0.f, std::abs(time - 13)));
float damageScale = 1.f - timeDiff / 7.f;
// When cloudy, the sun damage effect is halved
static float fMagicSunBlockedMult = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>().find(
"fMagicSunBlockedMult")->getFloat();
int weather = MWBase::Environment::get().getWorld()->getCurrentWeather();
if (weather > 1)
damageScale *= fMagicSunBlockedMult;
adjustDynamicStat(creatureStats, 0, -magnitude * damageScale);
if (magnitude * damageScale > 0.f)
receivedMagicDamage = true;
break;
}
case ESM::MagicEffect::FireDamage:
case ESM::MagicEffect::ShockDamage:
case ESM::MagicEffect::FrostDamage:
case ESM::MagicEffect::Poison:
{
adjustDynamicStat(creatureStats, 0, -magnitude);
receivedMagicDamage = true;
break;
}
case ESM::MagicEffect::DamageSkill:
case ESM::MagicEffect::RestoreSkill:
{
if (!actor.getClass().isNpc())
break;
NpcStats &npcStats = actor.getClass().getNpcStats(actor);
SkillValue& skill = npcStats.getSkill(effectKey.mArg);
if (effectKey.mId == ESM::MagicEffect::RestoreSkill)
skill.restore(magnitude);
else
skill.damage(magnitude);
break;
}
}
if (receivedMagicDamage && actor == getPlayer())
MWBase::Environment::get().getWindowManager()->activateHitOverlay(false);
}
}