File size: 6,042 Bytes
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#include "GameFeatureAction_AddInputBinding.h"
#include "Components/GameFrameworkComponentManager.h"
#include "Engine/GameInstance.h"
#include "GameFramework/PlayerController.h"
#include "Engine/World.h"
#include "GameFramework/Pawn.h"
#include "EnhancedInputSubsystems.h"
#include "Engine/LocalPlayer.h"
#include "Character/LyraHeroComponent.h"
#include "GameFeatures/GameFeatureAction_WorldActionBase.h"
#include "Input/LyraInputConfig.h"
#if WITH_EDITOR
#include "Misc/DataValidation.h"
#endif
#include UE_INLINE_GENERATED_CPP_BY_NAME(GameFeatureAction_AddInputBinding)
#define LOCTEXT_NAMESPACE "GameFeatures"
//////////////////////////////////////////////////////////////////////
// UGameFeatureAction_AddInputBinding
void UGameFeatureAction_AddInputBinding::OnGameFeatureActivating(FGameFeatureActivatingContext& Context)
{
FPerContextData& ActiveData = ContextData.FindOrAdd(Context);
if (!ensure(ActiveData.ExtensionRequestHandles.IsEmpty()) ||
!ensure(ActiveData.PawnsAddedTo.IsEmpty()))
{
Reset(ActiveData);
}
Super::OnGameFeatureActivating(Context);
}
void UGameFeatureAction_AddInputBinding::OnGameFeatureDeactivating(FGameFeatureDeactivatingContext& Context)
{
Super::OnGameFeatureDeactivating(Context);
FPerContextData* ActiveData = ContextData.Find(Context);
if (ensure(ActiveData))
{
Reset(*ActiveData);
}
}
#if WITH_EDITOR
EDataValidationResult UGameFeatureAction_AddInputBinding::IsDataValid(FDataValidationContext& Context) const
{
EDataValidationResult Result = CombineDataValidationResults(Super::IsDataValid(Context), EDataValidationResult::Valid);
int32 Index = 0;
for (const TSoftObjectPtr<const ULyraInputConfig>& Entry : InputConfigs)
{
if (Entry.IsNull())
{
Result = EDataValidationResult::Invalid;
Context.AddError(FText::Format(LOCTEXT("NullInputConfig", "Null InputConfig at index {0}."), Index));
}
++Index;
}
return Result;
}
#endif
void UGameFeatureAction_AddInputBinding::AddToWorld(const FWorldContext& WorldContext, const FGameFeatureStateChangeContext& ChangeContext)
{
UWorld* World = WorldContext.World();
UGameInstance* GameInstance = WorldContext.OwningGameInstance;
FPerContextData& ActiveData = ContextData.FindOrAdd(ChangeContext);
if ((GameInstance != nullptr) && (World != nullptr) && World->IsGameWorld())
{
if (UGameFrameworkComponentManager* ComponentManager = UGameInstance::GetSubsystem<UGameFrameworkComponentManager>(GameInstance))
{
UGameFrameworkComponentManager::FExtensionHandlerDelegate AddAbilitiesDelegate =
UGameFrameworkComponentManager::FExtensionHandlerDelegate::CreateUObject(this, &ThisClass::HandlePawnExtension, ChangeContext);
TSharedPtr<FComponentRequestHandle> ExtensionRequestHandle =
ComponentManager->AddExtensionHandler(APawn::StaticClass(), AddAbilitiesDelegate);
ActiveData.ExtensionRequestHandles.Add(ExtensionRequestHandle);
}
}
}
void UGameFeatureAction_AddInputBinding::Reset(FPerContextData& ActiveData)
{
ActiveData.ExtensionRequestHandles.Empty();
while (!ActiveData.PawnsAddedTo.IsEmpty())
{
TWeakObjectPtr<APawn> PawnPtr = ActiveData.PawnsAddedTo.Top();
if (PawnPtr.IsValid())
{
RemoveInputMapping(PawnPtr.Get(), ActiveData);
}
else
{
ActiveData.PawnsAddedTo.Pop();
}
}
}
void UGameFeatureAction_AddInputBinding::HandlePawnExtension(AActor* Actor, FName EventName, FGameFeatureStateChangeContext ChangeContext)
{
APawn* AsPawn = CastChecked<APawn>(Actor);
FPerContextData& ActiveData = ContextData.FindOrAdd(ChangeContext);
if ((EventName == UGameFrameworkComponentManager::NAME_ExtensionRemoved) || (EventName == UGameFrameworkComponentManager::NAME_ReceiverRemoved))
{
RemoveInputMapping(AsPawn, ActiveData);
}
else if ((EventName == UGameFrameworkComponentManager::NAME_ExtensionAdded) || (EventName == ULyraHeroComponent::NAME_BindInputsNow))
{
AddInputMappingForPlayer(AsPawn, ActiveData);
}
}
void UGameFeatureAction_AddInputBinding::AddInputMappingForPlayer(APawn* Pawn, FPerContextData& ActiveData)
{
APlayerController* PlayerController = Cast<APlayerController>(Pawn->GetController());
if (ULocalPlayer* LocalPlayer = PlayerController ? PlayerController->GetLocalPlayer() : nullptr)
{
if (UEnhancedInputLocalPlayerSubsystem* InputSystem = LocalPlayer->GetSubsystem<UEnhancedInputLocalPlayerSubsystem>())
{
ULyraHeroComponent* HeroComponent = Pawn->FindComponentByClass<ULyraHeroComponent>();
if (HeroComponent && HeroComponent->IsReadyToBindInputs())
{
for (const TSoftObjectPtr<const ULyraInputConfig>& Entry : InputConfigs)
{
if (const ULyraInputConfig* BindSet = Entry.Get())
{
HeroComponent->AddAdditionalInputConfig(BindSet);
}
}
}
ActiveData.PawnsAddedTo.AddUnique(Pawn);
}
else
{
UE_LOG(LogGameFeatures, Error, TEXT("Failed to find `UEnhancedInputLocalPlayerSubsystem` for local player. Input mappings will not be added. Make sure you're set to use the EnhancedInput system via config file."));
}
}
}
void UGameFeatureAction_AddInputBinding::RemoveInputMapping(APawn* Pawn, FPerContextData& ActiveData)
{
APlayerController* PlayerController = Cast<APlayerController>(Pawn->GetController());
if (ULocalPlayer* LocalPlayer = PlayerController ? PlayerController->GetLocalPlayer() : nullptr)
{
if (UEnhancedInputLocalPlayerSubsystem* InputSystem = LocalPlayer->GetSubsystem<UEnhancedInputLocalPlayerSubsystem>())
{
if (ULyraHeroComponent* HeroComponent = Pawn->FindComponentByClass<ULyraHeroComponent>())
{
for (const TSoftObjectPtr<const ULyraInputConfig>& Entry : InputConfigs)
{
if (const ULyraInputConfig* InputConfig = Entry.Get())
{
HeroComponent->RemoveAdditionalInputConfig(InputConfig);
}
}
}
}
}
ActiveData.PawnsAddedTo.Remove(Pawn);
}
#undef LOCTEXT_NAMESPACE
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