Fixed an issue where landscape splines would not be recooked correctly.

Author: andys-sidefx

Source/HoudiniEngine/Private/HoudiniLandscapeSplineTranslator.cpp

@@ -644,13 +644,6 @@ FHoudiniLandscapeSplineTranslator::CreateOutputLandscapeSplinesFromHoudiniGeoPar
 	HOUDINI_LOG_WARNING(TEXT("Landscape Spline Output is only supported in UE5.1+"));
 	return false;
 #else
-	// If we're not forcing the rebuild then only recreate if the HGPO is marked has changed.
-	if (!bInForceRebuild && (!InHGPO.bHasGeoChanged || !InHGPO.bHasPartChanged))
-	{
-		// Simply reuse the existing splines
-		OutputSplines = InCurrentSplines;
-		return true;
-	}
 
 	if (!IsValid(InWorld))
 		return false;

Source/HoudiniEngineRuntime/Private/HoudiniOutput.cpp

@@ -114,7 +114,7 @@ UHoudiniLandscapeSplinesOutput::GetLayerSegments(const FName InEditLayer, TArray
 
 
 void
-UHoudiniLandscapeSplinesOutput::Clear(const bool bInClearTempLayers)
+UHoudiniLandscapeSplinesOutput::Clear(bool bInClearTempLayers)
 {
 	// Delete the splines (segments and control points)
 	FHoudiniLandscapeRuntimeUtils::DestroyLandscapeSplinesSegmentsAndControlPoints(this);
@@ -1351,6 +1351,17 @@ void FHoudiniOutputObject::DestroyCookedData()
 		SceneComponent->DestroyComponent();
 	}
 
+	//--------------------------------------------------------------------------------------------------------------------
+	// Remove spline output
+	//--------------------------------------------------------------------------------------------------------------------
+
+	// Destroy any segments that we previously created
+	UHoudiniLandscapeSplinesOutput* SplinesOutputObject = Cast<UHoudiniLandscapeSplinesOutput>(this->OutputObject);
+	if (IsValid(SplinesOutputObject))
+	{
+		SplinesOutputObject->Clear();
+	}
+
 	//--------------------------------------------------------------------------------------------------------------------
 	// Destroy all objects
 	//--------------------------------------------------------------------------------------------------------------------