41,从UE5.1迁移到UE5.8排坑全记录

作为一个古法编程爱好者，决定与时俱进，用AI进行UE5的那个肉鸽，毕竟不是研究，只是工程，甚至小demo，那就流水线吧，把主要精力用在有深度的知识的研究上，

看到大家说AI只能用5.8版本，好吧，那就开干。

原以为移植很简单，转成5.8,generate后，.sln很快出来，原以为不过如此。结果出现一个错误，不知所云。

双击RoughLike1.uproject，

直接弹出对话框，显示错误内容

The last build used an outdated BuildSettingsVersion, or the target still requires upgrading.

Please upgrade RoughLike1Editor.Target.cs:

Update the build settings version (Installed Engine Build & Source Build):

DefaultBuildSettings = BuildSettingsVersion.V7;

Declare a unique build environment (Source Build only):

BuildEnvironment = TargetBuildEnvironment.Unique;

If you have already updated the target, would you like to rebuild & open the project?

那就把这两个.target.cs改为DefaultBuildSettings = BuildSettingsVersion.V7;

不过是配置问题，应该的。

现在应该可以了吧，结果

只有血量条，玩家呢？

按下~，双击bp_player0，发现能看到，说明paperzd插件没问题。

不放心，又查了下插件，果然没问题。

那就可能是摄像机的问题。

比如说，osg中camera可以addchild()不同的物体，谁说要加载场景中所有的物体呢？那么类推，UE应该也类似，那camera有问题？

添个灯光和几个圆锥体试试，果然运行后也看不到了

虱子多了不痒，一个个解决吧，先改下花屏问题，改成DX11

既然摄像机有问题，那就试试cameraActor，拖拽到场景，果然能看到

那就用CameraActor替代弹簧臂和摄像机组件。

复制代码

UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Camera", meta = (AllowPrivateAccess = "true"))
TObjectPtr<ACameraActor> ViewCamera;

void AMyPaperZDCharacter::BeginPlay()

{

Super::BeginPlay();

复制代码

APlayerController* playerController = Cast<APlayerController>(Controller);
ULocalPlayer* localPlayer = playerController->GetLocalPlayer();
UEnhancedInputLocalPlayerSubsystem* subsystem = ULocalPlayer::GetSubsystem<UEnhancedInputLocalPlayerSubsystem>(localPlayer);
subsystem->AddMappingContext(DefaultMappingContext, 0);
FActorSpawnParameters SpawnParams;
ViewCamera = GetWorld()->SpawnActor<ACameraActor>(FVector::ZeroVector, FRotator::ZeroRotator, SpawnParams);
if (ViewCamera)
{
    ViewCamera->GetCameraComponent()->SetProjectionMode(ECameraProjectionMode::Orthographic);
    ViewCamera->GetCameraComponent()->SetAspectRatio(0.0f);
    ViewCamera->GetCameraComponent()->SetConstraintAspectRatio(false);
    ViewCamera->GetCameraComponent()->SetOrthoWidth(2048);

    ViewCamera->AttachToActor(this, FAttachmentTransformRules::KeepRelativeTransform);
    ViewCamera->SetActorRelativeLocation(FVector(0, 0, 1000));

    FVector2D ViewportSize;
    GEngine->GameViewport->GetViewportSize(ViewportSize);
    if (ViewportSize.Y > 0)
    {
        float TargetOrthoHeight = 1152.0f; // 你希望在纵向上看到的像素高度（自行微调）
        float NewOrthoWidth = TargetOrthoHeight * (ViewportSize.X / ViewportSize.Y);
        ViewCamera->GetCameraComponent()->SetOrthoWidth(NewOrthoWidth);
    }
    // 【重点】蓝图 X/Y/Z → 转成 C++ 旋转
    // 蓝图 X = Roll
    // 蓝图 Y = Pitch
    // 蓝图 Z = Yaw
    // C++ FRotator( Pitch, Yaw, Roll )
    // 所以 → FRotator( 蓝图Y, 蓝图Z, 蓝图X )
    double roll = 0;
    double pitch = -90.0;
    double yaw = -90.0;
    ViewCamera->SetActorRelativeRotation(FRotator(pitch, yaw, roll));

    playerController->SetViewTarget(ViewCamera);
}
摄像机果然OK了![在这里插入图片描述](https://i-blog.csdnimg.cn/direct/1470e5fd7ce54cee86c05146379100d6.png)

但是画面乱七八糟了，

这下懵逼了，是zfighting还是材质？

查看了下地图

原来是材质问题

把 Masked 改为 Translucent，ok了