Reorder async navmesh updater jobs when player tile changes

When player tile changes distance to player that is part of jobs priority is
invalidated. So jobs are no longer in the right order. This can lead to
processing of farests tiles first.

Sort queue each time player tile is changed.

components/detournavigator/asyncnavmeshupdater.cpp

@@ -88,13 +88,22 @@ 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)
@@ -112,10 +121,21 @@ 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())
@@ -283,7 +303,7 @@ 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 +338,11 @@ 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 +396,7 @@ 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 +405,7 @@ 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

@@ -14,9 +14,10 @@
 #include <condition_variable>
 #include <memory>
 #include <mutex>
-#include <queue>
+#include <deque>
 #include <set>
 #include <thread>
+#include <tuple>
 
 class dtNavMesh;
 
@@ -83,11 +84,11 @@ 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