Make the Sound magic effect make noise

CHANGELOG.md

@@ -13,6 +13,7 @@
     Bug #6949: Sun Damage effect doesn't work in quasi exteriors
     Bug #6964: Nerasa Dralor Won't Follow
     Bug #6974: Only harmful effects are reflected
+    Bug #6986: Sound magic effect does not make noise
     Feature #6945: Support S3TC-compressed and BGR/BGRA NiPixelData
     Feature #6979: Add support of loading and displaying LOD assets purely based on their filename extension
 

apps/openmw/mwmechanics/spelleffects.cpp

@@ -530,6 +530,14 @@ void applyMagicEffect(const MWWorld::Ptr& target, const MWWorld::Ptr& caster, co
         case ESM::MagicEffect::RallyHumanoid:
             modifyAiSetting(target, effect, ESM::MagicEffect::RallyCreature, AiSetting::Flee, -effect.mMagnitude, invalid);
             break;
+        case ESM::MagicEffect::Sound:
+            if(target == getPlayer())
+            {
+                const auto& magnitudes = target.getClass().getCreatureStats(target).getMagicEffects();
+                float volume = std::clamp((magnitudes.get(effect.mEffectId).getModifier() + effect.mMagnitude) / 100.f, 0.f, 1.f);
+                MWBase::Environment::get().getSoundManager()->playSound3D(target, "magic sound", volume, 1.f, MWSound::Type::Sfx, MWSound::PlayMode::LoopNoEnv);
+            }
+            break;
         case ESM::MagicEffect::SummonScamp:
         case ESM::MagicEffect::SummonClannfear:
         case ESM::MagicEffect::SummonDaedroth:
@@ -1031,6 +1039,10 @@ void removeMagicEffect(const MWWorld::Ptr& target, ActiveSpells::ActiveSpellPara
         case ESM::MagicEffect::RallyHumanoid:
             modifyAiSetting(target, effect, ESM::MagicEffect::RallyCreature, AiSetting::Flee, effect.mMagnitude, invalid);
             break;
+        case ESM::MagicEffect::Sound:
+            if(magnitudes.get(effect.mEffectId).getModifier() <= 0.f && target == getPlayer())
+                MWBase::Environment::get().getSoundManager()->stopSound3D(target, "magic sound");
+            break;
         case ESM::MagicEffect::SummonScamp:
         case ESM::MagicEffect::SummonClannfear:
         case ESM::MagicEffect::SummonDaedroth: