C++ FGameplayTag::IsValid方法代码示例

void FGameplayTagContainer::AddTag(const FGameplayTag& TagToAdd)
{
	SCOPE_CYCLE_COUNTER(STAT_FGameplayTagContainer_AddTag);

	if (TagToAdd.IsValid())
	{
		// Don't want duplicate tags
		GameplayTags.AddUnique(TagToAdd);
	}
}

ECheckBoxState SGameplayTagWidget::IsTagChecked(TSharedPtr<FGameplayTagNode> Node) const
{
	int32 NumValidAssets = 0;
	int32 NumAssetsTagIsAppliedTo = 0;

	if (Node.IsValid())
	{
		UGameplayTagsManager& TagsManager = IGameplayTagsModule::Get().GetGameplayTagsManager();

		for (int32 ContainerIdx = 0; ContainerIdx < TagContainers.Num(); ++ContainerIdx)
		{
			FGameplayTagContainer* Container = TagContainers[ContainerIdx].TagContainer;
			if (Container)
			{
				NumValidAssets++;
				FGameplayTag Tag = TagsManager.RequestGameplayTag(Node->GetCompleteTag(), false);
				if (Tag.IsValid())
				{
					if (Container->HasTag(Tag, EGameplayTagMatchType::Explicit, EGameplayTagMatchType::Explicit))
					{
						++NumAssetsTagIsAppliedTo;
					}
				}
			}
		}
	}

	if (NumAssetsTagIsAppliedTo == 0)
	{
		// Check if any children are tagged
		for (auto It = Node->GetChildTagNodes().CreateConstIterator(); It; ++It)
		{
			if (IsTagChecked(*It) == ECheckBoxState::Checked)
			{
				return ECheckBoxState::Checked;
			}
		}

		return ECheckBoxState::Unchecked;
	}
	else if (NumAssetsTagIsAppliedTo == NumValidAssets)
	{
		return ECheckBoxState::Checked;
	}
	else
	{
		return ECheckBoxState::Undetermined;
	}
}

bool FGameplayTagContainer::Serialize(FArchive& Ar)
{
	const bool bOldTagVer = Ar.UE4Ver() < VER_UE4_GAMEPLAY_TAG_CONTAINER_TAG_TYPE_CHANGE;
	
	if (bOldTagVer)
	{
		Ar << Tags_DEPRECATED;
	}
	else
	{
		Ar << GameplayTags;
	}
	
	if (Ar.IsLoading())
	{
		UGameplayTagsManager& TagManager = IGameplayTagsModule::GetGameplayTagsManager();

		// If loading old version, add old tags to the new gameplay tags array so they can be saved out with the new version
		// This needs to happen 
		// NOTE: DeprecatedTagNamesNotFoundInTagMap should be removed along with the bOldTagVer when we remove backwards
		// compatibility, and the signature of RedirectTagsForContainer (below) should be changed appropriately as well.
		TSet<FName> DeprecatedTagNamesNotFoundInTagMap;
		if (bOldTagVer)
		{
			for (auto It = Tags_DEPRECATED.CreateConstIterator(); It; ++It)
			{
				const bool bErrorIfNotFound = false;
				FGameplayTag Tag = TagManager.RequestGameplayTag(*It, bErrorIfNotFound);
				if (Tag.IsValid())
				{
					TagManager.AddLeafTagToContainer(*this, Tag);
				}
				else
				{	// For tags not found in the current table, add them to a list to be checked when handling
					// redirection (below).
					DeprecatedTagNamesNotFoundInTagMap.Add(*It);
				}
			}
		}

		// Rename any tags that may have changed by the ini file.  Redirects can happen regardless of version.
		// Regardless of version, want loading to have a chance to handle redirects
		TagManager.RedirectTagsForContainer(*this, DeprecatedTagNamesNotFoundInTagMap);
	}

	return true;
}

void FFrontendFilter_GameplayTags::LoadSettings(const FString& IniFilename, const FString& IniSection, const FString& SettingsString)
{
	IGameplayTagsModule& GameplayTagModule = IGameplayTagsModule::Get();

	TArray<FString> TagStrings;
	GConfig->GetArray(*IniSection, *(SettingsString + TEXT(".Tags")), /*out*/ TagStrings, IniFilename);

	TagContainer->RemoveAllTags();
	for (const FString& TagString : TagStrings)
	{
		FGameplayTag NewTag = GameplayTagModule.RequestGameplayTag(*TagString, /*bErrorIfNotFound=*/ false);
		if (NewTag.IsValid())
		{
			TagContainer->AddTag(NewTag);
		}
	}
}

void FGameplayTagCustomization::BuildEditableContainerList()
{
	EditableContainers.Empty();

	if(StructPropertyHandle.IsValid())
	{
		TArray<void*> RawStructData;
		StructPropertyHandle->AccessRawData(RawStructData);

		TArray<UObject*> OuterObjects;
		StructPropertyHandle->GetOuterObjects(OuterObjects);

		FGameplayTag* Tag = (FGameplayTag*)(RawStructData[0]);
		if (Tag->IsValid())
		{
			TagName = Tag->ToString();
			TagContainer->AddTag(*Tag);
		}
		EditableContainers.Add(SGameplayTagWidget::FEditableGameplayTagContainerDatum(OuterObjects[0], TagContainer.Get()));
	}
}

void FGameplayTagCustomization::BuildEditableContainerList()
{
	EditableContainers.Empty();

	if(StructPropertyHandle.IsValid() && StructPropertyHandle->GetProperty())
	{
		TArray<void*> RawStructData;
		StructPropertyHandle->AccessRawData(RawStructData);

		if (RawStructData.Num() > 0)
		{
			FGameplayTag* Tag = (FGameplayTag*)(RawStructData[0]);
			if (Tag->IsValid())
			{
				TagName = Tag->ToString();
				TagContainer->AddTag(*Tag);
			}
		}

		EditableContainers.Add(SGameplayTagWidget::FEditableGameplayTagContainerDatum(nullptr, TagContainer.Get()));
	}
}

void UGameplayCueManager::BuildCuesToAddToGlobalSet(const TArray<FAssetData>& AssetDataList, FName TagPropertyName, bool bAsyncLoadAfterAdd, TArray<FGameplayCueReferencePair>& OutCuesToAdd, FOnGameplayCueNotifySetLoaded OnLoaded, FShouldLoadGCNotifyDelegate ShouldLoad)
{
	IGameplayTagsModule& GameplayTagsModule = IGameplayTagsModule::Get();

	TArray<FStringAssetReference> AssetsToLoad;
	AssetsToLoad.Reserve(AssetDataList.Num());

	for (FAssetData Data: AssetDataList)
	{
		// If ShouldLoad delegate is bound and it returns false, don't load this one
		if (ShouldLoad.IsBound() && (ShouldLoad.Execute(Data) == false))
		{
			continue;
		}

		const FString* FoundGameplayTag = Data.TagsAndValues.Find(TagPropertyName);
		if (FoundGameplayTag && FoundGameplayTag->Equals(TEXT("None")) == false)
		{
			const FString* GeneratedClassTag = Data.TagsAndValues.Find(TEXT("GeneratedClass"));
			if (GeneratedClassTag == nullptr)
			{
				ABILITY_LOG(Warning, TEXT("Unable to find GeneratedClass value for AssetData %s"), *Data.ObjectPath.ToString());
				continue;
			}

			ABILITY_LOG(Log, TEXT("GameplayCueManager Found: %s / %s"), **FoundGameplayTag, **GeneratedClassTag);

			FGameplayTag  GameplayCueTag = GameplayTagsModule.GetGameplayTagsManager().RequestGameplayTag(FName(**FoundGameplayTag), false);
			if (GameplayCueTag.IsValid())
			{
				// Add a new NotifyData entry to our flat list for this one
				FStringAssetReference StringRef;
				StringRef.SetPath(FPackageName::ExportTextPathToObjectPath(*GeneratedClassTag));

				OutCuesToAdd.Add(FGameplayCueReferencePair(GameplayCueTag, StringRef));

				AssetsToLoad.Add(StringRef);
			}
			else
			{
				ABILITY_LOG(Warning, TEXT("Found GameplayCue tag %s in asset %s but there is no corresponding tag in the GameplayTagManager."), **FoundGameplayTag, *Data.PackageName.ToString());
			}
		}
	}

	if (bAsyncLoadAfterAdd)
	{
		auto ForwardLambda = [](TArray<FStringAssetReference> AssetList, FOnGameplayCueNotifySetLoaded OnLoadedDelegate)
		{
			OnLoadedDelegate.ExecuteIfBound(AssetList);
		};

		if (AssetsToLoad.Num() > 0)
		{			
			StreamableManager.RequestAsyncLoad(AssetsToLoad, FStreamableDelegate::CreateStatic( ForwardLambda, AssetsToLoad, OnLoaded));
		}
		else
		{
			// Still fire the delegate even if nothing was found to load
			OnLoaded.ExecuteIfBound(AssetsToLoad);
		}
	}
}

bool FGameplayCueTranslationManager::BuildTagTranslationTable_r(const FName& TagName, const TArray<FName>& SplitNames)
{

#if !(UE_BUILD_SHIPPING || UE_BUILD_TEST)
	if (CVarGameplyCueTranslatorDebugTag->GetString().IsEmpty() == false && TagName.ToString().Contains(CVarGameplyCueTranslatorDebugTag->GetString()))
	{
		// 
		UE_LOG(LogGameplayCueTranslator, Log, TEXT("....."));
	}
#endif

	bool HasValidRootTag = false;

	TArray<FName> SwappedNames;
	SwappedNames.Reserve(10);

	// Every NameSwap Rule/Class that gave us data
	for (FNameSwapData& NameSwapData : AllNameSwaps)
	{
		// Avoid rule recursion
		{
			if (FGameplayCueTranslatorNode* ChildNode = GetTranslationNodeForName(TagName, false))
			{
				if (ChildNode->UsedTranslators.Contains(NameSwapData.ClassCDO))
				{
					continue;
				}
			}
		}

		// Every Swap that this Rule/Class gave us
		for (int32 SwapRuleIdx=0; SwapRuleIdx < NameSwapData.NameSwaps.Num(); ++SwapRuleIdx)
		{
			const FGameplayCueTranslationNameSwap& SwapRule = NameSwapData.NameSwaps[SwapRuleIdx];

#if WITH_EDITOR
			if (SwapRule.EditorData.Enabled == false)
			{
				continue;
			}
#endif

			// Walk through the original tag's elements
			for (int32 TagIdx=0; TagIdx < SplitNames.Num(); ++TagIdx)
			{
				// Walk through the potential new tag's elemnts
				for (int32 ToNameIdx=0; ToNameIdx < SwapRule.ToNames.Num() && TagIdx < SplitNames.Num(); ++ToNameIdx)
				{
					// If they match
					if (SwapRule.ToNames[ToNameIdx] == SplitNames[TagIdx])
					{
						// If we are at the end
						if (ToNameIdx == SwapRule.ToNames.Num()-1)
						{
							// *Possible* tag translation found! This tag can be derived from out name swapping rules, 
							// but we don't know if there actually is a tag that matches the tag which it would be translated *from*

							// Don't operator on SplitNames, since subsequent rules and name swaps use the same array
							SwappedNames = SplitNames;

							// Remove the "To Names" from the SwappedNames array, replace with the single "From Name"
							// E.g, GC.{Steel.Master} -> GC.{Hero}
							int32 NumRemoves = SwapRule.ToNames.Num(); // We are going to remove as many tags 
							int32 RemoveAtIdx = TagIdx - (SwapRule.ToNames.Num() - 1);
							check(SwappedNames.IsValidIndex(RemoveAtIdx));

							SwappedNames.RemoveAt(RemoveAtIdx, NumRemoves, false);
							SwappedNames.Insert(SwapRule.FromName, RemoveAtIdx);

							// Compose a string from the new name
							FString ComposedString = SwappedNames[0].ToString();							
							for (int32 ComposeIdx=1; ComposeIdx < SwappedNames.Num(); ++ ComposeIdx)
							{
								ComposedString += FString::Printf(TEXT(".%s"), *SwappedNames[ComposeIdx].ToString());
							}
								
							UE_LOG(LogGameplayCueTranslator, Log, TEXT("Found possible expanded tag. Original Child Tag: %s. Possible Parent Tag: %s"), *TagName.ToString(), *ComposedString);
							FName ComposedName = FName(*ComposedString);

							// Look for this tag - is it an actual real tag? If not, continue on
							{
								FGameplayTag ComposedTag = TagManager->RequestGameplayTag(ComposedName, false);
								if (ComposedTag.IsValid() == false)
								{
									UE_LOG(LogGameplayCueTranslator, Log, TEXT("   No tag match found, recursing..."));
									
									FGameplayCueTranslatorNodeIndex ParentIdx = GetTranslationIndexForName( ComposedName, false );
									if (ParentIdx.IsValid() == false)
									{
										ParentIdx = GetTranslationIndexForName( ComposedName, true );
										check(ParentIdx.IsValid());
										TranslationLUT[ParentIdx].UsedTranslators.Add( NameSwapData.ClassCDO );
																		
										HasValidRootTag |= BuildTagTranslationTable_r(ComposedName, SwappedNames);
									}
								}
								else
								{
									HasValidRootTag = true;
								}
//.........这里部分代码省略.........

void UGameplayTagsManager::ConstructGameplayTagTree()
{
	if (!GameplayRootTag.IsValid())
	{
		GameplayRootTag = MakeShareable(new FGameplayTagNode());
		{
#if STATS
			FString PerfMessage = FString::Printf(TEXT("UGameplayTagsManager::ConstructGameplayTagTree: Construct from data asset"));
			SCOPE_LOG_TIME_IN_SECONDS(*PerfMessage, nullptr)
#endif
		
			for (auto It(GameplayTagTables.CreateIterator()); It; It++)
			{
				if (*It)
				{
					PopulateTreeFromDataTable(*It);
				}
			}
		}

		if (ShouldImportTagsFromINI())
		{
#if STATS
			FString PerfMessage = FString::Printf(TEXT("UGameplayTagsManager::ConstructGameplayTagTree: ImportINI"));
			SCOPE_LOG_TIME_IN_SECONDS(*PerfMessage, nullptr)
#endif

			// Update path: Check for old tags in DefaultEngine.ini (we'll push them to the UGameplayTagSettings class).
			TArray<FString> EngineConfigTags;
			GConfig->GetArray(TEXT("/Script/GameplayTags.GameplayTagsSettings"), TEXT("GameplayTags"), EngineConfigTags, GEngineIni);
			if (EngineConfigTags.Num() > 0)
			{
				UGameplayTagsSettings* MutableDefault = GetMutableDefault<UGameplayTagsSettings>();
				if (MutableDefault->GameplayTags.Num() == 0)
				{
					MutableDefault->GameplayTags.Append(EngineConfigTags);
				}
			}

			// Load any GameplayTagSettings from config (their default object)
			for (TObjectIterator<UClass> ClassIt; ClassIt; ++ClassIt)
			{
				UClass* Class = *ClassIt;
				if (!Class->IsChildOf<UGameplayTagsSettings>() || Class->HasAnyClassFlags(CLASS_Abstract))
				{
					continue;
				}

#if WITH_EDITOR
				Class->GetDefaultObject<UGameplayTagsSettings>()->SortTags();
#endif
				
				for (FString TagStr : Class->GetDefaultObject<UGameplayTagsSettings>()->GameplayTags)
				{
					FGameplayTagTableRow TableRow;
					TableRow.Tag = TagStr;
					AddTagTableRow(TableRow);
				}
			}
			GameplayRootTag->GetChildTagNodes().Sort(FCompareFGameplayTagNodeByTag());
		}

		if (ShouldUseFastReplication())
		{
#if STATS
			FString PerfMessage = FString::Printf(TEXT("UGameplayTagsManager::ConstructGameplayTagTree: Reconstruct NetIndex"));
			SCOPE_LOG_TIME_IN_SECONDS(*PerfMessage, nullptr)
#endif
			ConstructNetIndex();
		}

		{
#if STATS
			FString PerfMessage = FString::Printf(TEXT("UGameplayTagsManager::ConstructGameplayTagTree: GameplayTagTreeChangedEvent.Broadcast"));
			SCOPE_LOG_TIME_IN_SECONDS(*PerfMessage, nullptr)
#endif
			GameplayTagTreeChangedEvent.Broadcast();
		}

		// Update the TagRedirects map
		TagRedirects.Empty();
		FConfigSection* PackageRedirects = GConfig->GetSectionPrivate(TEXT("/Script/Engine.Engine"), false, true, GEngineIni);
		for (FConfigSection::TIterator It(*PackageRedirects); It; ++It)
		{
			if (It.Key() == TEXT("GameplayTagRedirects"))
			{
				FName OldTagName = NAME_None;
				FName NewTagName;

				if (FParse::Value(*It.Value(), TEXT("OldTagName="), OldTagName))
				{
					if (FParse::Value(*It.Value(), TEXT("NewTagName="), NewTagName))
					{
						if (ensureMsgf(!TagRedirects.Contains(OldTagName), TEXT("Old tag %s is being redirected to more than one tag. Please remove all the redirections except for one."), *OldTagName.ToString()))
						{
							FGameplayTag OldTag = RequestGameplayTag(OldTagName, false); //< This only succeeds if OldTag is in the Table!
							if (OldTag.IsValid())
							{
								UE_LOG(LogGameplayTags, Warning,
									TEXT("Old tag (%s) which is being redirected still exists in the table!  Generally you should "
//.........这里部分代码省略.........