Add automatic heightmap files removal on Editor shutdown for deleted terrains

#1902

Source/Engine/Terrain/TerrainPatch.cpp

@@ -113,6 +113,11 @@ TerrainPatch::~TerrainPatch()
 #endif
 }
 
+RawDataAsset* TerrainPatch::GetHeightfield() const
+{
+    return _heightfield.Get();
+}
+
 void TerrainPatch::RemoveLightmap()
 {
     for (auto& chunk : Chunks)

Source/Engine/Terrain/TerrainPatch.h

@@ -149,6 +149,12 @@ public:
         return GetChunk(z * Terrain::ChunksCountEdge + x);
     }
 
+    /// <summary>
+    /// Gets the heightfield collision data asset.
+    /// </summary>
+    /// <returns>The heightfield data asset.</returns>
+    API_PROPERTY() RawDataAsset* GetHeightfield() const;
+
     /// <summary>
     /// Gets the splatmap assigned to this patch.
     /// </summary>