Add additional methods for layers.

Source/Engine/Level/Level.cpp

@@ -59,11 +59,31 @@ void LargeWorlds::UpdateOrigin(Vector3& origin, const Vector3& position)
     }
 }
 
-bool LayersMask::HasLayer(const StringView& layerName) const
+bool LayersMask::HasLayer(const StringView& layerName)
 {
     return HasLayer(Level::GetLayerIndex(layerName));
 }
 
+LayersMask LayersMask::GetMask(StringView layerNames[])
+{
+    LayersMask mask(0);
+    if (layerNames == nullptr)
+        return mask;
+    for (int i = 0; i < layerNames->Length(); i++)
+    {
+        StringView& layerName = layerNames[i];
+        // Ignore blank entries
+        if (layerName.Length() == 0)
+            continue;
+        int index = Level::GetLayerIndex(layerName);
+        if (index != -1 && !mask.HasLayer(index))
+        {
+            mask.Mask |= static_cast<uint32>(1 << index);
+        }
+    }
+    return mask;
+}
+
 enum class SceneEventType
 {
     OnSceneSaving = 0,
@@ -728,6 +748,18 @@ int32 Level::GetLayerIndex(const StringView& layer)
     return result;
 }
 
+StringView Level::GetLayerName(const int32 layerIndex)
+{
+    for (int32 i = 0; i < 32; i++)
+    {
+        if (i == layerIndex)
+        {
+            return Layers[i];
+        }
+    }
+    return TEXT("");
+}
+
 void Level::callActorEvent(ActorEventType eventType, Actor* a, Actor* b)
 {
     PROFILE_CPU();

Source/Engine/Level/Level.h

@@ -534,6 +534,13 @@ public:
     /// </summary>
     API_FUNCTION() static int32 GetLayerIndex(const StringView& layer);
 
+    /// <summary>
+    /// Gets the name of the layer based on the index.
+    /// </summary>
+    /// <param name="layerIndex">The index to find the layer string. 0 - 32.</param>
+    /// <returns>The layer string. Returns a blank string if index not found.</returns>
+    API_FUNCTION() static StringView GetLayerName(const int32 layerIndex);
+
 private:
     // Actor API
     enum class ActorEventType