UE学习日志#11GAS--ASC源码简要分析9 AbilitySystemGlobals分析2 初始化相关

1 static UAbilitySystemGlobals& Get()

保证了是单例，IGameplayAbilitiesModule继承了IModuleInterface

	/** Gets the single instance of the globals object, will create it as necessary */
	static UAbilitySystemGlobals& Get()
	{
		return *IGameplayAbilitiesModule::Get().GetAbilitySystemGlobals();
	}

2 InitGlobalData相关

2.1 InitGlobalData

确保不会再次初始化

获取一些列初值

绑定到指定回调

void UAbilitySystemGlobals::InitGlobalData()
{
	// Make sure the user didn't try to initialize the system again (we call InitGlobalData automatically in UE5.3+).
	if (IsAbilitySystemGlobalsInitialized())
	{
		return;
	}
	bInitialized = true;

	LLM_SCOPE(TEXT("AbilitySystem"));
	GetGlobalCurveTable();
	GetGlobalAttributeMetaDataTable();
	
	InitAttributeDefaults();
	ReloadAttributeDefaults();

	GetGameplayCueManager();
	GetGameplayTagResponseTable();
	InitGlobalTags();
	PerformDeveloperSettingsUpgrade();

	InitTargetDataScriptStructCache();

	// Register for PreloadMap so cleanup can occur on map transitions
	FCoreUObjectDelegates::PreLoadMapWithContext.AddUObject(this, &UAbilitySystemGlobals::HandlePreLoadMap);

#if WITH_EDITOR
	// Register in editor for PreBeginPlay so cleanup can occur when we start a PIE session
	if (GIsEditor)
	{
		FEditorDelegates::PreBeginPIE.AddUObject(this, &UAbilitySystemGlobals::OnPreBeginPIE);
	}
#endif
}

2.2 IsAbilitySystemGlobalsInitialized

朴实无华返回bInitialized

bool UAbilitySystemGlobals::IsAbilitySystemGlobalsInitialized() const
{
	return bInitialized;
}

2.3 GetGlobalCurveTable和GetGlobalAttributeMetaDataTable

从UGameplayAbilitiesDeveloperSettings中获取GlobalCurveTableName然后TryLoad

UCurveTable * UAbilitySystemGlobals::GetGlobalCurveTable()
{
	if (!GlobalCurveTable)
	{
		const UGameplayAbilitiesDeveloperSettings* DeveloperSettings = GetDefault<UGameplayAbilitiesDeveloperSettings>();
		if (DeveloperSettings->GlobalCurveTableName.IsValid())
		{
			GlobalCurveTable = Cast<UCurveTable>(DeveloperSettings->GlobalCurveTableName.TryLoad());
		}
	}
	return GlobalCurveTable;
}

GetGlobalAttributeMetaDataTable同理