Allow command spells to work when cast by AI on AI

(Fixes #3723)

apps/openmw/mwmechanics/actors.cpp

@@ -84,10 +84,8 @@ public:
                              const std::string& sourceName, const std::string& sourceId, int casterActorId,
                         float magnitude, float remainingTime = -1, float totalTime = -1)
     {
-        MWWorld::Ptr player = MWMechanics::getPlayer();
-        if (    ((key.mId == ESM::MagicEffect::CommandHumanoid && mActor.getClass().isNpc())
-                || (key.mId == ESM::MagicEffect::CommandCreature && mActor.getTypeName() == typeid(ESM::Creature).name()))
-            && casterActorId == player.getClass().getCreatureStats(player).getActorId()
+        if (((key.mId == ESM::MagicEffect::CommandHumanoid && mActor.getClass().isNpc())
+            || (key.mId == ESM::MagicEffect::CommandCreature && mActor.getTypeName() == typeid(ESM::Creature).name()))
             && magnitude >= mActor.getClass().getCreatureStats(mActor).getLevel())
                 mCommanded = true;
     }

apps/openmw/mwmechanics/spellcasting.cpp

@@ -492,9 +492,9 @@ namespace MWMechanics
                         appliedLastingEffects.push_back(effect);
 
                         // Command spells should have their effect, including taking the target out of combat, each time the spell successfully affects the target
-                        if (effectIt->mEffectID == ESM::MagicEffect::CommandHumanoid && target.getClass().isNpc()
-                        || (effectIt->mEffectID == ESM::MagicEffect::CommandCreature && target.getTypeName() == typeid(ESM::Creature).name())
-                        && caster == getPlayer() && magnitude >= target.getClass().getCreatureStats(target).getLevel())
+                        if (((effectIt->mEffectID == ESM::MagicEffect::CommandHumanoid && target.getClass().isNpc())
+                        || (effectIt->mEffectID == ESM::MagicEffect::CommandCreature && target.getTypeName() == typeid(ESM::Creature).name()))
+                        && !caster.isEmpty() && caster.getClass().isActor() && target != getPlayer() && magnitude >= target.getClass().getCreatureStats(target).getLevel())
                         {
                             MWMechanics::AiFollow package(caster.getCellRef().getRefId(), true);
                             target.getClass().getCreatureStats(target).getAiSequence().stack(package, target);