Open door when it is on the way to a next path point

apps/openmw/mwbase/world.hpp

@@ -306,6 +306,8 @@ namespace MWBase
 
             virtual bool castRay (float x1, float y1, float z1, float x2, float y2, float z2) = 0;
 
+            virtual MWWorld::Ptr castRay(const osg::Vec3f& from, const osg::Vec3f& to, int mask) const = 0;
+
             virtual void setActorCollisionMode(const MWWorld::Ptr& ptr, bool internal, bool external) = 0;
             virtual bool isActorCollisionEnabled(const MWWorld::Ptr& ptr) = 0;
 

apps/openmw/mwmechanics/aipackage.cpp

@@ -13,6 +13,8 @@
 #include "../mwworld/cellstore.hpp"
 #include "../mwworld/inventorystore.hpp"
 
+#include "../mwphysics/collisiontype.hpp"
+
 #include "pathgrid.hpp"
 #include "creaturestats.hpp"
 #include "movement.hpp"
@@ -234,6 +236,9 @@ void MWMechanics::AiPackage::openDoors(const MWWorld::Ptr& actor)
     // note: AiWander currently does not open doors
     if (getTypeId() != TypeIdWander && !door.getCellRef().getTeleport() && door.getClass().getDoorState(door) == 0)
     {
+        if (!isDoorOnTheWay(actor, door))
+            return;
+
         if ((door.getCellRef().getTrap().empty() && door.getCellRef().getLockLevel() <= 0 ))
         {
             world->activate(door, actor);
@@ -402,3 +407,16 @@ DetourNavigator::Flags MWMechanics::AiPackage::getNavigatorFlags(const MWWorld::
 
     return result;
 }
+
+bool MWMechanics::AiPackage::isDoorOnTheWay(const MWWorld::Ptr& actor, const MWWorld::Ptr& door) const
+{
+    if (mPathFinder.getPathSize() == 0)
+        return false;
+
+    const auto world = MWBase::Environment::get().getWorld();
+    const auto halfExtents = world->getHalfExtents(actor);
+    const auto position = actor.getRefData().getPosition().asVec3() + osg::Vec3f(0, 0, halfExtents.z());
+    const auto destination = mPathFinder.getPath().front() + osg::Vec3f(0, 0, halfExtents.z());
+
+    return world->castRay(position, destination, MWPhysics::CollisionType_Door) == door;
+}

apps/openmw/mwmechanics/aipackage.hpp

@@ -147,6 +147,8 @@ namespace MWMechanics
 
         private:
             bool isNearInactiveCell(osg::Vec3f position);
+
+            bool isDoorOnTheWay(const MWWorld::Ptr& actor, const MWWorld::Ptr& door) const;
     };
 }
 

apps/openmw/mwworld/worldimp.cpp

@@ -1610,8 +1610,13 @@ namespace MWWorld
         osg::Vec3f a(x1,y1,z1);
         osg::Vec3f b(x2,y2,z2);
 
-        MWPhysics::PhysicsSystem::RayResult result = mPhysics->castRay(a, b, MWWorld::Ptr(), std::vector<MWWorld::Ptr>(), mask);
-        return result.mHit;
+        return !castRay(a, b, mask).isEmpty();
+    }
+
+    MWWorld::Ptr World::castRay(const osg::Vec3f& from, const osg::Vec3f& to, int mask) const
+    {
+        const auto result = mPhysics->castRay(from, to, MWWorld::Ptr(), std::vector<MWWorld::Ptr>(), mask);
+        return result.mHit ? result.mHitObject : MWWorld::Ptr();
     }
 
     void World::processDoors(float duration)

apps/openmw/mwworld/worldimp.hpp

@@ -420,6 +420,8 @@ namespace MWWorld
 
             bool castRay (float x1, float y1, float z1, float x2, float y2, float z2) override;
 
+            MWWorld::Ptr castRay (const osg::Vec3f& from, const osg::Vec3f& to, int mask) const override;
+
             void setActorCollisionMode(const Ptr& ptr, bool internal, bool external) override;
             bool isActorCollisionEnabled(const Ptr& ptr) override;