UE4-【C++】【UE4异步加载】

心已赠人 2023-06-17 13:55 33阅读 0赞 
  1. FString sound_path = data.Sound;
  2. FSoftObjectPath path;
  3. path.SetPath(sound_path);
  4. TSoftObjectPtr<USoundCue> sound;
  5. if (path.IsValid())
  6.     sound = Cast<USoundCue>(path.ResolveObject());
  7.     TArray<FSoftObjectPath> Assets;
  8.     Assets.AddUnique(path);
  9.     ACharacter* host = UFLCharacterHelp::GetHostCharacter(GetWorld());
  10.     URAsyncLoader::GetInstancePtr()->LoadAsyncResource(Assets, FStreamableDelegate::CreateLambda([=] {
  11.         UGameplayStatics::PlaySoundAtLocation(host, sound.Get(), host->GetCapsuleComponent()->GetComponentLocation());
  12. }));
  14. void URAsyncLoader::LoadAsyncResource(TArray<FSoftObjectPath> Assets, FStreamableDelegate Callback)
  15. {
  16.     TArray<FSoftObjectPath> AsyncAsset;
  17.     AsyncAsset.Reset(Assets.Num());
  18.     for (FSoftObjectPath& objectPath : Assets)
  19.     {
  20.         if (!mAssets.Contains(objectPath) && !objectPath.IsNull() && !objectPath.IsSubobject())
  21.         {
  22.             AsyncAsset.AddUnique(objectPath);
  23.             mAssets.AddUnique(objectPath);
  24.         }
  25.     }
  26.     if (AsyncAsset.Num() > 0)
  27.     {
  28.         GetInstancePtr()->_StreamableManager.RequestAsyncLoad(AsyncAsset, Callback);
  29.     }
  30.     else
  31.     {
  32.         Callback.ExecuteIfBound();
  33.     }
  34. }

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