AIPursue: Pursue the player until LOS is established (#5869)

CHANGELOG.md

@@ -103,6 +103,7 @@
     Bug #5838: Local map and other menus become blank in some locations while playing Wizards' Islands mod.
     Bug #5840: GetSoundPlaying "Health Damage" doesn't play when NPC hits target with shield effect ( vanilla engine behavior )
     Bug #5841: Can't Cast Zero Cost Spells When Magicka is < 0
+    Bug #5869: Guards can initiate arrest dialogue behind locked doors
     Bug #5871: The console appears if you type the Russian letter "Ё" in the name of the enchantment
     Feature #390: 3rd person look "over the shoulder"
     Feature #1536: Show more information about level on menu

apps/openmw/mwmechanics/aipursue.cpp

@@ -53,9 +53,14 @@ bool AiPursue::execute (const MWWorld::Ptr& actor, CharacterController& characte
 
     const float pathTolerance = 100.f;
 
-    if (pathTo(actor, dest, duration, pathTolerance) &&
-        std::abs(dest.z() - actorPos.z()) < pathTolerance) // check the true distance in case the target is far away in Z-direction
+    // check the true distance in case the target is far away in Z-direction
+    bool reached = pathTo(actor, dest, duration, pathTolerance) &&
+                   std::abs(dest.z() - actorPos.z()) < pathTolerance;
+
+    if (reached)
     {
+        if (!MWBase::Environment::get().getWorld()->getLOS(target, actor))
+            return false;
         MWBase::Environment::get().getWindowManager()->pushGuiMode(MWGui::GM_Dialogue, actor); //Arrest player when reached
         return true;
     }