Merge branch 'fix_navmesh_wait' into 'master'

Fix redundant waiting until navmesh is generated

See merge request OpenMW/openmw!861

apps/openmw/mwworld/scene.cpp

@@ -619,7 +619,7 @@ namespace MWWorld
         if (changeEvent)
             mCellChanged = true;
 
-        mNavigator.wait(*loadingListener);
+        mNavigator.wait(*loadingListener, DetourNavigator::WaitConditionType::requiredTilesPresent);
     }
 
     void Scene::testExteriorCells()
@@ -848,7 +848,7 @@ namespace MWWorld
 
         MWBase::Environment::get().getWindowManager()->changeCell(mCurrentCell);
 
-        mNavigator.wait(*loadingListener);
+        mNavigator.wait(*loadingListener, DetourNavigator::WaitConditionType::requiredTilesPresent);
     }
 
     void Scene::changeToExteriorCell (const ESM::Position& position, bool adjustPlayerPos, bool changeEvent)

apps/openmw_test_suite/detournavigator/navigator.cpp

@@ -127,7 +127,7 @@ namespace
         mNavigator->addAgent(mAgentHalfExtents);
         mNavigator->addObject(ObjectId(&shape), shape, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::requiredTilesPresent);
 
         EXPECT_EQ(mNavigator->findPath(mAgentHalfExtents, mStepSize, mStart, mEnd, Flag_walk, mAreaCosts, mOut), Status::Success);
 
@@ -177,7 +177,7 @@ namespace
         mNavigator->addAgent(mAgentHalfExtents);
         mNavigator->addObject(ObjectId(&heightfieldShape), heightfieldShape, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         EXPECT_EQ(mNavigator->findPath(mAgentHalfExtents, mStepSize, mStart, mEnd, Flag_walk, mAreaCosts, mOut), Status::Success);
 
@@ -209,7 +209,7 @@ namespace
 
         mNavigator->addObject(ObjectId(&compoundShape), compoundShape, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         mPath.clear();
         mOut = std::back_inserter(mPath);
@@ -262,7 +262,7 @@ namespace
         mNavigator->addObject(ObjectId(&heightfieldShape), heightfieldShape, btTransform::getIdentity());
         mNavigator->addObject(ObjectId(&compoundShape), compoundShape, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         EXPECT_EQ(mNavigator->findPath(mAgentHalfExtents, mStepSize, mStart, mEnd, Flag_walk, mAreaCosts, mOut), Status::Success);
 
@@ -296,7 +296,7 @@ namespace
 
         mNavigator->updateObject(ObjectId(&compoundShape), compoundShape, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         mPath.clear();
         mOut = std::back_inserter(mPath);
@@ -355,7 +355,7 @@ namespace
         mNavigator->addObject(ObjectId(&shape), shape, btTransform::getIdentity());
         mNavigator->addObject(ObjectId(&shape2), shape2, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         EXPECT_EQ(mNavigator->findPath(mAgentHalfExtents, mStepSize, mStart, mEnd, Flag_walk, mAreaCosts, mOut), Status::Success);
 
@@ -411,7 +411,7 @@ namespace
         mNavigator->addAgent(mAgentHalfExtents);
         mNavigator->addObject(ObjectId(&shape), ObjectShapes {shape, &shapeAvoid}, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         EXPECT_EQ(mNavigator->findPath(mAgentHalfExtents, mStepSize, mStart, mEnd, Flag_walk, mAreaCosts, mOut), Status::Success);
 
@@ -459,7 +459,7 @@ namespace
         mNavigator->addWater(osg::Vec2i(0, 0), 128 * 4, 300, btTransform::getIdentity());
         mNavigator->addObject(ObjectId(&shape), shape, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         mStart.x() = 0;
         mStart.z() = 300;
@@ -507,7 +507,7 @@ namespace
         mNavigator->addWater(osg::Vec2i(0, 0), 128 * 4, -25, btTransform::getIdentity());
         mNavigator->addObject(ObjectId(&shape), shape, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         mStart.x() = 0;
         mEnd.x() = 0;
@@ -554,7 +554,7 @@ namespace
         mNavigator->addObject(ObjectId(&shape), shape, btTransform::getIdentity());
         mNavigator->addWater(osg::Vec2i(0, 0), std::numeric_limits<int>::max(), -25, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         mStart.x() = 0;
         mEnd.x() = 0;
@@ -601,7 +601,7 @@ namespace
         mNavigator->addWater(osg::Vec2i(0, 0), 128 * 4, -25, btTransform::getIdentity());
         mNavigator->addObject(ObjectId(&shape), shape, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         mStart.x() = 0;
         mEnd.x() = 0;
@@ -645,15 +645,15 @@ namespace
         mNavigator->addAgent(mAgentHalfExtents);
         mNavigator->addObject(ObjectId(&shape), shape, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         mNavigator->removeObject(ObjectId(&shape));
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         mNavigator->addObject(ObjectId(&shape), shape, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         EXPECT_EQ(mNavigator->findPath(mAgentHalfExtents, mStepSize, mStart, mEnd, Flag_walk, mAreaCosts, mOut), Status::Success);
 
@@ -699,7 +699,7 @@ namespace
         mNavigator->addAgent(mAgentHalfExtents);
         mNavigator->addObject(ObjectId(&shape), shape, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         Misc::Rng::init(42);
 
@@ -748,7 +748,7 @@ namespace
         }
 
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         EXPECT_EQ(mNavigator->findPath(mAgentHalfExtents, mStepSize, mStart, mEnd, Flag_walk, mAreaCosts, mOut), Status::Success);
 
@@ -791,7 +791,7 @@ namespace
             mNavigator->addObject(ObjectId(&shapes[i]), shapes[i], transform);
         }
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         const auto start = std::chrono::steady_clock::now();
         for (std::size_t i = 0; i < shapes.size(); ++i)
@@ -800,7 +800,7 @@ namespace
             mNavigator->updateObject(ObjectId(&shapes[i]), shapes[i], transform);
         }
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         for (std::size_t i = 0; i < shapes.size(); ++i)
         {
@@ -808,7 +808,7 @@ namespace
             mNavigator->updateObject(ObjectId(&shapes[i]), shapes[i], transform);
         }
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         const auto duration = std::chrono::steady_clock::now() - start;
 
@@ -831,7 +831,7 @@ namespace
         mNavigator->addAgent(mAgentHalfExtents);
         mNavigator->addObject(ObjectId(&shape), shape, btTransform::getIdentity());
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         const auto result = mNavigator->raycast(mAgentHalfExtents, mStart, mEnd, Flag_walk);
 
@@ -862,7 +862,7 @@ namespace
         mNavigator->addObject(ObjectId(&boderBoxShape), boderBoxShape,
                               btTransform(btMatrix3x3::getIdentity(), oscillatingBoxShapePosition + btVector3(0, 0, 200)));
         mNavigator->update(mPlayerPosition);
-        mNavigator->wait(mListener);
+        mNavigator->wait(mListener, WaitConditionType::allJobsDone);
 
         const auto navMeshes = mNavigator->getNavMeshes();
         ASSERT_EQ(navMeshes.size(), 1);
@@ -878,7 +878,7 @@ namespace
                                         oscillatingBoxShapePosition);
             mNavigator->updateObject(ObjectId(&oscillatingBoxShape), oscillatingBoxShape, transform);
             mNavigator->update(mPlayerPosition);
-            mNavigator->wait(mListener);
+            mNavigator->wait(mListener, WaitConditionType::allJobsDone);
         }
 
         ASSERT_EQ(navMeshes.size(), 1);

components/detournavigator/asyncnavmeshupdater.cpp

@@ -10,7 +10,9 @@
 
 #include <osg/Stats>
 
+#include <algorithm>
 #include <numeric>
+#include <set>
 
 namespace
 {
@@ -23,12 +25,14 @@ namespace
     }
 
     int getMinDistanceTo(const TilePosition& position, int maxDistance,
-                         const std::map<osg::Vec3f, std::set<TilePosition>>& tilesPerHalfExtents)
+                         const std::map<osg::Vec3f, std::set<TilePosition>>& tilesPerHalfExtents,
+                         const std::set<std::tuple<osg::Vec3f, TilePosition>>& presentTiles)
     {
         int result = maxDistance;
         for (const auto& [halfExtents, tiles] : tilesPerHalfExtents)
             for (const TilePosition& tile : tiles)
-                result = std::min(result, getManhattanDistance(position, tile));
+                if (presentTiles.find(std::make_tuple(halfExtents, tile)) == presentTiles.end())
+                    result = std::min(result, getManhattanDistance(position, tile));
         return result;
     }
 }
@@ -88,13 +92,22 @@ namespace DetourNavigator
         const SharedNavMeshCacheItem& navMeshCacheItem, const TilePosition& playerTile,
         const std::map<TilePosition, ChangeType>& changedTiles)
     {
-        *mPlayerTile.lock() = playerTile;
+        bool playerTileChanged = false;
+        {
+            auto locked = mPlayerTile.lock();
+            playerTileChanged = *locked != playerTile;
+            *locked = playerTile;
+        }
 
-        if (changedTiles.empty())
+        if (!playerTileChanged && changedTiles.empty())
             return;
 
         const std::lock_guard<std::mutex> lock(mMutex);
 
+        if (playerTileChanged)
+            for (auto& job : mJobs)
+                job.mDistanceToPlayer = getManhattanDistance(job.mChangedTile, playerTile);
+
         for (const auto& changedTile : changedTiles)
         {
             if (mPushed[agentHalfExtents].insert(changedTile.first).second)
@@ -112,17 +125,28 @@ namespace DetourNavigator
                     ? mLastUpdates[job.mAgentHalfExtents][job.mChangedTile] + mSettings.get().mMinUpdateInterval
                     : std::chrono::steady_clock::time_point();
 
-                mJobs.push(std::move(job));
+                if (playerTileChanged)
+                {
+                    mJobs.push_back(std::move(job));
+                }
+                else
+                {
+                    const auto it = std::upper_bound(mJobs.begin(), mJobs.end(), job);
+                    mJobs.insert(it, std::move(job));
+                }
             }
         }
 
+        if (playerTileChanged)
+            std::sort(mJobs.begin(), mJobs.end());
+
         Log(Debug::Debug) << "Posted " << mJobs.size() << " navigator jobs";
 
         if (!mJobs.empty())
             mHasJob.notify_all();
     }
 
-    void AsyncNavMeshUpdater::wait(Loading::Listener& listener)
+    void AsyncNavMeshUpdater::wait(Loading::Listener& listener, WaitConditionType waitConditionType)
     {
         if (mSettings.get().mWaitUntilMinDistanceToPlayer == 0)
             return;
@@ -130,15 +154,26 @@ namespace DetourNavigator
         const std::size_t initialJobsLeft = getTotalJobs();
         std::size_t maxProgress = initialJobsLeft + mThreads.size();
         listener.setProgressRange(maxProgress);
-        const int minDistanceToPlayer = waitUntilJobsDone(initialJobsLeft, maxProgress, listener);
+        switch (waitConditionType)
-        if (minDistanceToPlayer < mSettings.get().mWaitUntilMinDistanceToPlayer)
         {
-            mProcessingTiles.wait(mProcessed, [] (const auto& v) { return v.empty(); });
+            case WaitConditionType::requiredTilesPresent:
-            listener.setProgress(maxProgress);
+            {
+                const int minDistanceToPlayer = waitUntilJobsDoneForNotPresentTiles(initialJobsLeft, maxProgress, listener);
+                if (minDistanceToPlayer < mSettings.get().mWaitUntilMinDistanceToPlayer)
+                {
+                    mProcessingTiles.wait(mProcessed, [] (const auto& v) { return v.empty(); });
+                    listener.setProgress(maxProgress);
+                }
+                break;
+            }
+            case WaitConditionType::allJobsDone:
+                waitUntilAllJobsDone();
+                listener.setProgress(maxProgress);
+                break;
         }
     }
 
-    int AsyncNavMeshUpdater::waitUntilJobsDone(const std::size_t initialJobsLeft, std::size_t& maxProgress, Loading::Listener& listener)
+    int AsyncNavMeshUpdater::waitUntilJobsDoneForNotPresentTiles(const std::size_t initialJobsLeft, std::size_t& maxProgress, Loading::Listener& listener)
     {
         std::size_t prevJobsLeft = initialJobsLeft;
         std::size_t jobsDone = 0;
@@ -154,9 +189,9 @@ namespace DetourNavigator
                 minDistanceToPlayer = 0;
                 return true;
             }
-            minDistanceToPlayer = getMinDistanceTo(playerPosition, maxDistanceToPlayer, mPushed);
+            minDistanceToPlayer = getMinDistanceTo(playerPosition, maxDistanceToPlayer, mPushed, mPresentTiles);
             for (const auto& [threadId, queue] : mThreadsQueues)
-                minDistanceToPlayer = getMinDistanceTo(playerPosition, minDistanceToPlayer, queue.mPushed);
+                minDistanceToPlayer = getMinDistanceTo(playerPosition, minDistanceToPlayer, queue.mPushed, mPresentTiles);
             return minDistanceToPlayer >= maxDistanceToPlayer;
         };
         std::unique_lock<std::mutex> lock(mMutex);
@@ -179,6 +214,15 @@ namespace DetourNavigator
         return minDistanceToPlayer;
     }
 
+    void AsyncNavMeshUpdater::waitUntilAllJobsDone()
+    {
+        {
+            std::unique_lock<std::mutex> lock(mMutex);
+            mDone.wait(lock, [this] { return mJobs.size() + getTotalThreadJobsUnsafe() == 0; });
+        }
+        mProcessingTiles.wait(mProcessed, [] (const auto& v) { return v.empty(); });
+    }
+
     void AsyncNavMeshUpdater::reportStats(unsigned int frameNumber, osg::Stats& stats) const
     {
         std::size_t jobs = 0;
@@ -253,6 +297,11 @@ namespace DetourNavigator
                 navMeshVersion);
         }
 
+        if (status == UpdateNavMeshStatus::removed || status == UpdateNavMeshStatus::lost)
+            mPresentTiles.erase(std::make_tuple(job.mAgentHalfExtents, job.mChangedTile));
+        else if (isSuccess(status) && status != UpdateNavMeshStatus::ignored)
+            mPresentTiles.insert(std::make_tuple(job.mAgentHalfExtents, job.mChangedTile));
+
         const auto finish = std::chrono::steady_clock::now();
 
         writeDebugFiles(job, recastMesh.get());
@@ -283,7 +332,7 @@ namespace DetourNavigator
         while (true)
         {
             const auto hasJob = [&] {
-                return (!mJobs.empty() && mJobs.top().mProcessTime <= std::chrono::steady_clock::now())
+                return (!mJobs.empty() && mJobs.front().mProcessTime <= std::chrono::steady_clock::now())
                     || !threadQueue.mJobs.empty();
             };
 
@@ -318,11 +367,11 @@ namespace DetourNavigator
     {
         const auto now = std::chrono::steady_clock::now();
 
-        if (jobs.top().mProcessTime > now)
+        if (jobs.front().mProcessTime > now)
             return {};
 
-        Job job = jobs.top();
+        Job job = jobs.front();
-        jobs.pop();
+        jobs.pop_front();
 
         if (changeLastUpdate && job.mChangeType == ChangeType::update)
             mLastUpdates[job.mAgentHalfExtents][job.mChangedTile] = now;
@@ -376,7 +425,7 @@ namespace DetourNavigator
         if (mPushed[job.mAgentHalfExtents].insert(job.mChangedTile).second)
         {
             ++job.mTryNumber;
-            mJobs.push(std::move(job));
+            mJobs.push_back(std::move(job));
             mHasJob.notify_all();
         }
     }
@@ -385,7 +434,7 @@ namespace DetourNavigator
     {
         if (queue.mPushed[job.mAgentHalfExtents].insert(job.mChangedTile).second)
         {
-            queue.mJobs.push(std::move(job));
+            queue.mJobs.push_back(std::move(job));
             mHasJob.notify_all();
         }
     }

components/detournavigator/asyncnavmeshupdater.hpp

@@ -6,6 +6,7 @@
 #include "tilecachedrecastmeshmanager.hpp"
 #include "tileposition.hpp"
 #include "navmeshtilescache.hpp"
+#include "waitconditiontype.hpp"
 
 #include <osg/Vec3f>
 
@@ -14,9 +15,10 @@
 #include <condition_variable>
 #include <memory>
 #include <mutex>
-#include <queue>
+#include <deque>
 #include <set>
 #include <thread>
+#include <tuple>
 
 class dtNavMesh;
 
@@ -60,7 +62,7 @@ namespace DetourNavigator
         void post(const osg::Vec3f& agentHalfExtents, const SharedNavMeshCacheItem& mNavMeshCacheItem,
             const TilePosition& playerTile, const std::map<TilePosition, ChangeType>& changedTiles);
 
-        void wait(Loading::Listener& listener);
+        void wait(Loading::Listener& listener, WaitConditionType waitConditionType);
 
         void reportStats(unsigned int frameNumber, osg::Stats& stats) const;
 
@@ -83,11 +85,11 @@ namespace DetourNavigator
 
             friend inline bool operator <(const Job& lhs, const Job& rhs)
             {
-                return lhs.getPriority() > rhs.getPriority();
+                return lhs.getPriority() < rhs.getPriority();
             }
         };
 
-        using Jobs = std::priority_queue<Job, std::deque<Job>>;
+        using Jobs = std::deque<Job>;
         using Pushed = std::map<osg::Vec3f, std::set<TilePosition>>;
 
         struct Queue
@@ -113,6 +115,7 @@ namespace DetourNavigator
         NavMeshTilesCache mNavMeshTilesCache;
         Misc::ScopeGuarded<std::map<osg::Vec3f, std::map<TilePosition, std::thread::id>>> mProcessingTiles;
         std::map<osg::Vec3f, std::map<TilePosition, std::chrono::steady_clock::time_point>> mLastUpdates;
+        std::set<std::tuple<osg::Vec3f, TilePosition>> mPresentTiles;
         std::map<std::thread::id, Queue> mThreadsQueues;
         std::vector<std::thread> mThreads;
 
@@ -142,7 +145,9 @@ namespace DetourNavigator
 
         void cleanupLastUpdates();
 
-        int waitUntilJobsDone(const std::size_t initialJobsLeft, std::size_t& maxJobsLeft, Loading::Listener& listener);
+        int waitUntilJobsDoneForNotPresentTiles(const std::size_t initialJobsLeft, std::size_t& maxJobsLeft, Loading::Listener& listener);
+
+        void waitUntilAllJobsDone();
     };
 }
 

components/detournavigator/navigator.hpp

@@ -7,6 +7,7 @@
 #include "objectid.hpp"
 #include "navmeshcacheitem.hpp"
 #include "recastmeshtiles.hpp"
+#include "waitconditiontype.hpp"
 
 namespace ESM
 {
@@ -165,9 +166,10 @@ namespace DetourNavigator
         virtual void setUpdatesEnabled(bool enabled) = 0;
 
         /**
-         * @brief wait locks thread until all tiles are updated from last update call.
+         * @brief wait locks thread until tiles are updated from last update call based on passed condition type.
+         * @param waitConditionType defines when waiting will stop
          */
-        virtual void wait(Loading::Listener& listener) = 0;
+        virtual void wait(Loading::Listener& listener, WaitConditionType waitConditionType) = 0;
 
         /**
          * @brief findPath fills output iterator with points of scene surfaces to be used for actor to walk through.

components/detournavigator/navigatorimpl.cpp

@@ -151,9 +151,9 @@ namespace DetourNavigator
         mUpdatesEnabled = enabled;
     }
 
-    void NavigatorImpl::wait(Loading::Listener& listener)
+    void NavigatorImpl::wait(Loading::Listener& listener, WaitConditionType waitConditionType)
     {
-        mNavMeshManager.wait(listener);
+        mNavMeshManager.wait(listener, waitConditionType);
     }
 
     SharedNavMeshCacheItem NavigatorImpl::getNavMesh(const osg::Vec3f& agentHalfExtents) const

components/detournavigator/navigatorimpl.hpp

@@ -48,7 +48,7 @@ namespace DetourNavigator
 
         void setUpdatesEnabled(bool enabled) override;
 
-        void wait(Loading::Listener& listener) override;
+        void wait(Loading::Listener& listener, WaitConditionType waitConditionType) override;
 
         SharedNavMeshCacheItem getNavMesh(const osg::Vec3f& agentHalfExtents) const override;
 

components/detournavigator/navigatorstub.hpp

@@ -73,7 +73,7 @@ namespace DetourNavigator
 
         void setUpdatesEnabled(bool /*enabled*/) override {}
 
-        void wait(Loading::Listener& /*listener*/) override {}
+        void wait(Loading::Listener& /*listener*/, WaitConditionType /*waitConditionType*/) override {}
 
         SharedNavMeshCacheItem getNavMesh(const osg::Vec3f& /*agentHalfExtents*/) const override
         {

components/detournavigator/navmeshmanager.cpp

@@ -5,6 +5,7 @@
 #include "makenavmesh.hpp"
 #include "navmeshcacheitem.hpp"
 #include "settings.hpp"
+#include "waitconditiontype.hpp"
 
 #include <components/debug/debuglog.hpp>
 
@@ -190,9 +191,9 @@ namespace DetourNavigator
             " recastMeshManagerRevision=" << lastRevision;
     }
 
-    void NavMeshManager::wait(Loading::Listener& listener)
+    void NavMeshManager::wait(Loading::Listener& listener, WaitConditionType waitConditionType)
     {
-        mAsyncNavMeshUpdater.wait(listener);
+        mAsyncNavMeshUpdater.wait(listener, waitConditionType);
     }
 
     SharedNavMeshCacheItem NavMeshManager::getNavMesh(const osg::Vec3f& agentHalfExtents) const

components/detournavigator/navmeshmanager.hpp

@@ -5,6 +5,7 @@
 #include "cachedrecastmeshmanager.hpp"
 #include "offmeshconnectionsmanager.hpp"
 #include "recastmeshtiles.hpp"
+#include "waitconditiontype.hpp"
 
 #include <BulletCollision/CollisionShapes/btHeightfieldTerrainShape.h>
 
@@ -44,7 +45,7 @@ namespace DetourNavigator
 
         void update(osg::Vec3f playerPosition, const osg::Vec3f& agentHalfExtents);
 
-        void wait(Loading::Listener& listener);
+        void wait(Loading::Listener& listener, WaitConditionType waitConditionType);
 
         SharedNavMeshCacheItem getNavMesh(const osg::Vec3f& agentHalfExtents) const;
 

components/detournavigator/waitconditiontype.hpp

@@ -0,0 +1,13 @@
+#ifndef OPENMW_COMPONENTS_DETOURNAVIGATOR_WAITCONDITIONTYPE_H
+#define OPENMW_COMPONENTS_DETOURNAVIGATOR_WAITCONDITIONTYPE_H
+
+namespace DetourNavigator
+{
+    enum class WaitConditionType
+    {
+        requiredTilesPresent,
+        allJobsDone,
+    };
+}
+
+#endif