113 lines
3.3 KiB
C++
113 lines
3.3 KiB
C++
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// Portage UE 5.5 - voir LPSecondScreenSubsystem.h
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#include "LPSecondScreenSubsystem.h"
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#include "Components/CapsuleComponent.h"
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#include "Components/SceneCaptureComponent2D.h"
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#include "Components/SkeletalMeshComponent.h"
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#include "Engine/GameInstance.h"
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#include "Engine/SceneCapture2D.h"
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#include "Engine/World.h"
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#include "EngineUtils.h"
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#include "GameFramework/Character.h"
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#include "LifePlay.h"
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#include "UObject/UnrealType.h"
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namespace
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{
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// Cadrage du visage : distance camera-tete (cm) et champ horizontal (degres).
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constexpr float FaceDistance = 80.f;
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constexpr float FaceFOV = 30.f;
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const FName CaptureActorName(TEXT("SecondScreen"));
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const FName PersonPropertyName(TEXT("SecondScreenPerson"));
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const FName HeadSocket(TEXT("head"));
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/** Position de la tete : os "head" du premier maillage qui le porte, sinon haut de la capsule. */
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FVector HeadLocation(const AActor* Person)
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{
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TInlineComponentArray<USkeletalMeshComponent*> Meshes(Person);
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for (const USkeletalMeshComponent* Mesh : Meshes)
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{
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if (Mesh && Mesh->GetSkinnedAsset() && Mesh->DoesSocketExist(HeadSocket))
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{
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return Mesh->GetSocketLocation(HeadSocket);
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}
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}
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if (const ACharacter* Character = Cast<ACharacter>(Person))
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{
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if (const UCapsuleComponent* Capsule = Character->GetCapsuleComponent())
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{
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return Capsule->GetComponentLocation() + FVector(0.f, 0.f, Capsule->GetScaledCapsuleHalfHeight() * 0.8f);
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}
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}
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return Person->GetActorLocation();
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}
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}
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void ULPSecondScreenSubsystem::Initialize(FSubsystemCollectionBase& Collection)
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{
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Super::Initialize(Collection);
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TickHandle = FTSTicker::GetCoreTicker().AddTicker(FTickerDelegate::CreateUObject(this, &ULPSecondScreenSubsystem::Tick));
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}
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void ULPSecondScreenSubsystem::Deinitialize()
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{
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FTSTicker::GetCoreTicker().RemoveTicker(TickHandle);
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Super::Deinitialize();
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}
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bool ULPSecondScreenSubsystem::Tick(float DeltaTime)
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{
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const UGameInstance* GI = GetGameInstance();
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UWorld* World = GI ? GI->GetWorld() : nullptr;
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if (!World)
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{
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return true;
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}
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// La camera est recherchee une fois par monde (par nom d'objet : l'etiquette n'existe pas en Shipping).
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if (CaptureWorld.Get() != World)
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{
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CaptureWorld = World;
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Capture.Reset();
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for (TActorIterator<ASceneCapture2D> It(World); It; ++It)
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{
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if (It->GetFName() == CaptureActorName)
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{
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Capture = *It;
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break;
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}
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}
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}
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ASceneCapture2D* CaptureActor = Capture.Get();
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USceneCaptureComponent2D* CaptureComp = CaptureActor ? CaptureActor->GetCaptureComponent2D() : nullptr;
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if (!CaptureComp)
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{
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return true;
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}
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const FObjectPropertyBase* Prop = CastField<FObjectPropertyBase>(GI->GetClass()->FindPropertyByName(PersonPropertyName));
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const AActor* Person = Prop ? Cast<AActor>(Prop->GetObjectPropertyValue_InContainer(GI)) : nullptr;
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if (!IsValid(Person))
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{
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return true;
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}
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const FVector Head = HeadLocation(Person);
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FVector Forward = Person->GetActorForwardVector();
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Forward.Z = 0.f;
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if (!Forward.Normalize())
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{
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Forward = FVector::ForwardVector;
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}
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const FVector CameraLocation = Head + Forward * FaceDistance;
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if (CaptureComp->Mobility != EComponentMobility::Movable)
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{
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// Composant pose dans la carte : un composant statique refuse d'etre deplace en jeu.
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CaptureComp->SetMobility(EComponentMobility::Movable);
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}
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CaptureComp->SetWorldLocationAndRotation(CameraLocation, (Head - CameraLocation).Rotation());
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CaptureComp->FOVAngle = FaceFOV;
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return true;
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}
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