Stop AiPursue when target has invisibility or chameleon>=75

apps/openmw/mwmechanics/aipursue.cpp

@@ -43,6 +43,10 @@ bool AiPursue::execute (const MWWorld::Ptr& actor, AiState& state, float duratio
             )
         return true; //Target doesn't exist
 
+    if (target.getClass().getCreatureStats(target).getMagicEffects().get(ESM::MagicEffect::Invisibility).getMagnitude() > 0
+            || target.getClass().getCreatureStats(target).getMagicEffects().get(ESM::MagicEffect::Chameleon).getMagnitude() > 75)
+        return true;
+
     if(target.getClass().getCreatureStats(target).isDead())
         return true;