[英]UE4 C++ APlayerController::GetHUD always return null
这是我的代码。
void AFpsCharacter::ClientRPCInitializeHud_Implementation()
{
AFpsPlayerController* PlayerController = (AFpsPlayerController*)GetOwner();
if (IsValid(PlayerController))
{
AFpsPlayerState* State = PlayerController->GetPlayerState<AFpsPlayerState>();
UE_LOG(LogTemp, Log, TEXT("PlayerController now on %s"), *State->GetPlayerName());
HUD = (AFpsHud*)PlayerController->GetHUD(); //AHUD* HUD in AFpsCharacter.
//HUD = Cast<AFpsHud>(PlayerController->GetHUD());
if (!IsValid(HUD))
{
UE_LOG(LogTemp, Log, TEXT("AFpsCharacter::InitializeHud() : HUD is not valid"));
}
}
else
{
UE_LOG(LogTemp, Log, TEXT("PlayerController is not exist"));
}
}
函数ClientRPCInitializeHud()
在角色生成并且PlayerController
拥有它时运行。 我的问题是指针HUD
值无效。 当然,我检查了GameMode
默认HUD
。 我该怎么做才能获得APlayerController::GetHUD
?
我只需按照以下步骤运行ClientRPCInitializeHud
。
PlayerController
的函数。ServerRPCSpawnAsPlayableCharacter
函数APlayerController::Possess(SpawnedCharacter)
后运行ClientRPCInitializeHud
函数。这是代码。
void AFpsPlayerController::OnSelectedTeam(EPlayerTeam team, TSubclassOf<class AFpsCharacter> CharacterClass, FTransform SpawnTransform)
{
ServerRPCSetTeam(team);
ServerRPCSpawnAsPlayableCharacter(CharacterClass, SpawnTransform);
}
void AFpsPlayerController::ServerRPCSpawnAsPlayableCharacter_Implementation(TSubclassOf<AFpsCharacter> CharacterClass, FTransform SpawnTransform)
{
FActorSpawnParameters SpawnParameters;
AFpsCharacter *SpawnedCharacter = GetWorld()->SpawnActor<AFpsCharacter>(CharacterClass, SpawnTransform.GetLocation(), SpawnTransform.GetRotation().Rotator(), SpawnParameters);
SpawnedCharacter->SetSpawnTransform(SpawnTransform);
Possess(SpawnedCharacter);
SpawnedCharacter->OnPossess();
}
void AFpsCharacter::OnPossess()
{
ClientRPCInitializeHud();
}
我试图检查 GetPlayerController(0)->GetHUD 是否有效,如果在关卡蓝图或小部件蓝图中调用,但它也是无效的。
我猜问题是默认的 HUD 实例不是由GameMode
默认 HUD 类创建的。 即使我在GameMode
检查了默认的 HUD 类,我也不知道为什么会发生这种情况。 所以我选择临时解决方案。 使用APlayerController::ClientSetHUD(TSubclass<AHUD>)
。 就我而言,每个ACharacter
都有TSubclassOf<AHUD>
并在APlayerController::OnPossess(APawn* InPawn)
处运行APlayerController::ClientSetHUD(TSubclass<AHUD>)
APlayerController::OnPossess(APawn* InPawn)
。
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