InstancedStaticMeshDelegates.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Containers/ArrayView.h"
 
class UInstancedStaticMeshComponent;
class UHierarchicalInstancedStaticMeshComponent;
 
struct FInstancedStaticMeshDelegates
{
    enum class EInstanceIndexUpdateType : uint8
    {
        Added,
        Removed,
        Relocated,
        Cleared,
        Destroyed,
    };
 
    struct FInstanceIndexUpdateData
    {
        EInstanceIndexUpdateType Type = EInstanceIndexUpdateType::Cleared;
 
        int32 Index = INDEX_NONE;
 
        int32 OldIndex = INDEX_NONE;
    };
 
    DECLARE_MULTICAST_DELEGATE_TwoParams(FOnInstanceIndexUpdated, UInstancedStaticMeshComponent* /*Component*/, TArrayView<const FInstanceIndexUpdateData> /*IndexUpdates*/);
    static ENGINE_API FOnInstanceIndexUpdated OnInstanceIndexUpdated;
};
 
struct FHierarchicalInstancedStaticMeshDelegates
{
    DECLARE_MULTICAST_DELEGATE_TwoParams(FOnTreeBuilt, UHierarchicalInstancedStaticMeshComponent* /*Component*/, bool /*bWasAsyncBuild*/);
    static ENGINE_API FOnTreeBuilt OnTreeBuilt;
};