在代码中使用UE4 ()时UE4中的链接错误

Question

我创建了一个从C++派生的AssetActionUtility类，并在该类中编写了以下函数：

#include "ClipAnimUtility.h"

#include "EditorUtilityLibrary.h"
#include "IAssetTools.h"
#include "ClipAnimAsset.h"
#include "Kismet/KismetStringLibrary.h"

void UClipAnimUtility::ClipAnimCpp(FString path)
{
    AnimSource = UEditorUtilityLibrary::GetSelectedAssets()[0];
    PackagePath = UEditorUtilityLibrary::GetSelectedAssetData()[0].PackagePath.ToString();

    RowData = UClipAnimAsset::ReadFileArray(path);
    for (auto dataString : RowData)
    {
        FString startFrame{}, endFrame{}, clipName{}, subString{};

        dataString.Split("|", &startFrame, &subString);
        subString.Split("|", &endFrame, &clipName);

        SingleClip.StartFrame = UKismetStringLibrary::Conv_StringToInt(startFrame);
        SingleClip.EndFrame = UKismetStringLibrary::Conv_StringToInt(endFrame);
        SingleClip.ClipName = clipName;

        UAnimSequence* animSeq = Cast<UAnimSequence>(
            UAssetToolsHelpers::GetAssetTools()->DuplicateAsset(SingleClip.ClipName, PackagePath, AnimSource)
            );

        UClipAnimAsset::ClipAnimAsset(animSeq, SingleClip.StartFrame, SingleClip.EndFrame);
    }
}

并将以下模块添加到MyGame.Build.cs文件中：

PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore", "AssetTools", "AssetRegistry" });

但是，我仍然得到链接错误LNK2019：

ClipAnimUtility.cpp.obj : error LNK2019: unresolved external symbol "public: static class TScriptInterface<class IAssetTools> __cdecl UAssetToolsHelpers::GetAssetTools(void)" (?GetAssetTools@UAssetToolsHelpers@@SA?AV?$TScriptInterface@VIAssetTools@@@@XZ) referenced in function "public: void __cdecl UClipAnimUtility::ClipAnimCpp(class FString)" (?ClipAnimCpp@UClipAnimUtility@@QEAAXVFString@@@Z)

它似乎在抱怨无法链接与UAssetToolsHelpers相关的二进制文件，但根据文档，它包含在模块"AssetTools“中，我已经将它包含在build.cs文件中，这非常令人困惑。我在这里做错事了？

Answer 1

更改以下代码：

UAnimSequence* animSeq = Cast<UAnimSequence>(
    UAssetToolsHelpers::GetAssetTools()->DuplicateAsset(SingleClip.ClipName, PackagePath, AnimSource)
    );

转到

FAssetToolsModule& Module = FModuleManager::GetModuleChecked<FAssetToolsModule>("AssetTools");
UAnimSequence* animSeq = Cast<UAnimSequence>(
    Module.Get().DuplicateAsset(SingleClip.ClipName, PackagePath, AnimSource)
    );