Add cached flag to update navmesh status

components/detournavigator/asyncnavmeshupdater.cpp

@@ -38,6 +38,12 @@ namespace DetourNavigator
                 return stream << "failed";
             case UpdateNavMeshStatus::lost:
                 return stream << "lost";
+            case UpdateNavMeshStatus::cached:
+                return stream << "cached";
+            case UpdateNavMeshStatus::unchanged:
+                return stream << "unchanged";
+            case UpdateNavMeshStatus::restored:
+                return stream << "restored";
         }
         return stream << "unknown(" << static_cast<unsigned>(value) << ")";
     }

components/detournavigator/makenavmesh.cpp

@@ -559,6 +559,7 @@ namespace DetourNavigator
         }
 
         auto cachedNavMeshData = navMeshTilesCache.get(agentHalfExtents, changedTile, *recastMesh, offMeshConnections);
+        bool cached = static_cast<bool>(cachedNavMeshData);
 
         if (!cachedNavMeshData)
         {
@@ -584,6 +585,7 @@ namespace DetourNavigator
             {
                 cachedNavMeshData = navMeshTilesCache.get(agentHalfExtents, changedTile, *recastMesh,
                                                           offMeshConnections);
+                cached = static_cast<bool>(cachedNavMeshData);
             }
 
             if (!cachedNavMeshData)
@@ -593,6 +595,8 @@ namespace DetourNavigator
             }
         }
 
-        return navMeshCacheItem->lock()->updateTile(changedTile, std::move(cachedNavMeshData));
+        const auto updateStatus = navMeshCacheItem->lock()->updateTile(changedTile, std::move(cachedNavMeshData));
+
+        return UpdateNavMeshStatusBuilder(updateStatus).cached(cached).getResult();
     }
 }

components/detournavigator/navmeshcacheitem.hpp

@@ -22,6 +22,9 @@ namespace DetourNavigator
         replaced = removed | added,
         failed = 1 << 2,
         lost = removed | failed,
+        cached = 1 << 3,
+        unchanged = replaced | cached,
+        restored = added | cached,
     };
 
     inline bool isSuccess(UpdateNavMeshStatus value)
@@ -34,6 +37,9 @@ namespace DetourNavigator
     public:
         UpdateNavMeshStatusBuilder() = default;
 
+        explicit UpdateNavMeshStatusBuilder(UpdateNavMeshStatus value)
+            : mResult(value) {}
+
         UpdateNavMeshStatusBuilder removed(bool value)
         {
             if (value)
@@ -61,6 +67,15 @@ namespace DetourNavigator
             return *this;
         }
 
+        UpdateNavMeshStatusBuilder cached(bool value)
+        {
+            if (value)
+                set(UpdateNavMeshStatus::cached);
+            else
+                unset(UpdateNavMeshStatus::cached);
+            return *this;
+        }
+
         UpdateNavMeshStatus getResult() const
         {
             return mResult;