UE4运用C++和框架开发坦克大战教程笔记（十九）（第58~60集）完结

58. 弹窗显示与隐藏

这节课我们先来补全 TransferMask() 里对于 Overlay 布局类型面板的遮罩转移逻辑，大体上与 Canvas 布局类型的差不多。

接下来就是编写弹窗的隐藏和重新显示的逻辑。

在写重新显示弹窗的逻辑时我们发现 DoEnterUIPanel() 有一段代码可以复用，但是发现了一处逻辑上的错误，所以要调整一下代码。

DDFrameWidget.cpp

void UDDFrameWidget::DoEnterUIPanel(FName PanelName)
{// ... 省略// 此处作更改	if (!WorkLayout) {if (UnActiveCanvas.Num() == 0) {WorkLayout = WidgetTree->ConstructWidget<UCanvasPanel>(UCanvasPanel::StaticClass());WorkLayout->SetVisibility(ESlateVisibility::SelfHitTestInvisible);}elseWorkLayout = UnActiveCanvas.Pop();// 添加布局控件到界面最顶层UCanvasPanelSlot* FrameCanvasSlot = RootCanvas->AddChildToCanvas(WorkLayout);FrameCanvasSlot->SetAnchors(FAnchors(0.f, 0.f, 1.f, 1.f));FrameCanvasSlot->SetOffsets(FMargin(0.f, 0.f, 0.f, 0.f));// 添加到激活画布组ActiveCanvas.Push(WorkLayout);	}// ... 省略// 此处作更改if (!WorkLayout) {if (UnActiveOverlay.Num() == 0) {WorkLayout = WidgetTree->ConstructWidget<UOverlay>(UOverlay::StaticClass());WorkLayout->SetVisibility(ESlateVisibility::SelfHitTestInvisible);}elseWorkLayout = UnActiveOverlay.Pop();// 添加布局控件到界面最顶层UCanvasPanelSlot* FrameCanvasSlot = RootCanvas->AddChildToCanvas(WorkLayout);FrameCanvasSlot->SetAnchors(FAnchors(0.f, 0.f, 1.f, 1.f));FrameCanvasSlot->SetOffsets(FMargin(0.f, 0.f, 0.f, 0.f));// 添加到激活画布组ActiveOverlay.Push(WorkLayout);	}// ... 省略
}void UDDFrameWidget::HidePanelReverse(UDDPanelWidget* PanelWidget)
{// 获取弹窗栈到数组TArray<UDDPanelWidget*> PopStack;PopPanelStack.GenerateValueArray(PopStack);// 如果不是最上层的弹窗，直接返回if (PopStack[PopStack.Num() - 1] != PanelWidget) {DDH::Debug() << PanelWidget->GetObjectName() << " Is Not Last Panel In PopPanelStack" << DDH::Endl();return;}// 从栈中移除PopPanelStack.Remove(PanelWidget->GetObjectName());// 执行隐藏函数PanelWidget->PanelHidden();// 调整弹窗栈PopStack.Pop();if (PopStack.Num() > 0) {UDDPanelWidget* PrePanelWidget = PopStack[PopStack.Num() - 1];// 转移遮罩到新的最顶层的弹窗的下一层TransferMask(PrePanelWidget);// 恢复被冻结的最顶层的弹窗PrePanelWidget->PanelResume();}// 如果没有弹窗就移除遮罩elseRemoveMaskPanel();
}void UDDFrameWidget::ShowPanelReverse(UDDPanelWidget* PanelWidget)
{// 如果弹窗栈里有元素，冻结最顶层的弹窗if (PopPanelStack.Num() > 0) {TArray<UDDPanelWidget*> PanelStack;PopPanelStack.GenerateValueArray(PanelStack);PanelStack[PanelStack.Num() - 1]->PanelFreeze();}// 弹窗对象必须从当前父控件移除，再重新添加到最顶层的界面（因为弹窗只是隐藏而不是销毁了）if (PanelWidget->UINature.LayoutType == ELayoutType::Canvas) {UCanvasPanel* PreWorkLayout = Cast<UCanvasPanel>(PanelWidget->GetParent());UCanvasPanelSlot* PrePanelSlot = Cast<UCanvasPanelSlot>(PanelWidget->Slot);FAnchors PreAnchors = PrePanelSlot->GetAnchors();FMargin PreOffsets = PrePanelSlot->GetOffsets();// 将 PanelWidget 从当前父控件移除PanelWidget->RemoveFromParent();// 处理父控件if (PreWorkLayout->GetChildrenCount() == 0) {PreWorkLayout->RemoveFromParent();ActiveCanvas.Remove(PreWorkLayout);UnActiveCanvas.Push(PreWorkLayout);}// 寻找最顶层的 WorkLayoutUCanvasPanel* WorkLayout = NULL;// 判断最底层的布局控件是否是 Canvasif (RootCanvas->GetChildrenCount() > 0)WorkLayout = Cast<UCanvasPanel>(RootCanvas->GetChildAt(RootCanvas->GetChildrenCount() - 1));if (!WorkLayout) {// 如果没有任何对象if (UnActiveCanvas.Num() == 0) {WorkLayout = WidgetTree->ConstructWidget<UCanvasPanel>(UCanvasPanel::StaticClass());WorkLayout->SetVisibility(ESlateVisibility::SelfHitTestInvisible);}elseWorkLayout = UnActiveCanvas.Pop();// 添加布局控件到界面最顶层UCanvasPanelSlot* FrameCanvasSlot = RootCanvas->AddChildToCanvas(WorkLayout);FrameCanvasSlot->SetAnchors(FAnchors(0.f, 0.f, 1.f, 1.f));FrameCanvasSlot->SetOffsets(FMargin(0.f, 0.f, 0.f, 0.f));// 添加到激活画布组ActiveCanvas.Push(WorkLayout);	}// 激活遮罩到最顶层弹窗ActiveMask(WorkLayout, PanelWidget->UINature.PanelLucencyType);// 把弹窗添加到获取的最顶层的父控件UCanvasPanelSlot* PanelSlot = WorkLayout->AddChildToCanvas(PanelWidget);PanelSlot->SetAnchors(PreAnchors);PanelSlot->SetOffsets(PreOffsets);}else {UOverlay* PreWorkLayout = Cast<UOverlay>(PanelWidget->GetParent());UOverlaySlot* PrePanelSlot = Cast<UOverlaySlot>(PanelWidget->Slot);FMargin PrePadding = PrePanelSlot->Padding;TEnumAsByte<EHorizontalAlignment> PreHAlign = PrePanelSlot->HorizontalAlignment;TEnumAsByte<EVerticalAlignment> PreVAlign = PrePanelSlot->VerticalAlignment;// 将 PanelWidget 从当前父控件移除PanelWidget->RemoveFromParent();// 处理父控件if (PreWorkLayout->GetChildrenCount() == 0) {PreWorkLayout->RemoveFromParent();ActiveOverlay.Remove(PreWorkLayout);UnActiveOverlay.Push(PreWorkLayout);}UOverlay* WorkLayout = NULL;// 如果存在布局控件，试图把最后一个布局控件转换成 Overlayif (RootCanvas->GetChildrenCount() > 0)WorkLayout = Cast<UOverlay>(RootCanvas->GetChildAt(RootCanvas->GetChildrenCount() - 1));if (!WorkLayout) {if (UnActiveOverlay.Num() == 0) {WorkLayout = WidgetTree->ConstructWidget<UOverlay>(UOverlay::StaticClass());WorkLayout->SetVisibility(ESlateVisibility::SelfHitTestInvisible);}elseWorkLayout = UnActiveOverlay.Pop();// 添加布局控件到界面最顶层UCanvasPanelSlot* FrameCanvasSlot = RootCanvas->AddChildToCanvas(WorkLayout);FrameCanvasSlot->SetAnchors(FAnchors(0.f, 0.f, 1.f, 1.f));FrameCanvasSlot->SetOffsets(FMargin(0.f, 0.f, 0.f, 0.f));// 添加到激活画布组ActiveOverlay.Push(WorkLayout);	}// 激活遮罩到最顶层弹窗ActiveMask(WorkLayout, PanelWidget->UINature.PanelLucencyType);// 添加弹窗到获取到的最顶层的布局控件UOverlaySlot* PanelSlot = WorkLayout->AddChildToOverlay(PanelWidget);PanelSlot->SetPadding(PrePadding);PanelSlot->SetHorizontalAlignment(PreHAlign);PanelSlot->SetVerticalAlignment(PreVAlign);}// 添加弹窗到栈PopPanelStack.Add(PanelWidget->GetObjectName(), PanelWidget);// 显示弹窗PanelWidget->PanelDisplay();
}void UDDFrameWidget::TransferMask(UDDPanelWidget* PanelWidget)
{// ... 省略if (PanelWidget->UINature.LayoutType == ELayoutType::Canvas) {// ... 省略}else {UOverlay* WorkLayout = Cast<UOverlay>(PanelWidget->GetParent());int32 StartOrder = WorkLayout->GetChildIndex(PanelWidget);for (int i = StartOrder; i < WorkLayout->GetChildrenCount(); ++i) {UDDPanelWidget* TempPanelWidget = Cast<UDDPanelWidget>(WorkLayout->GetChildAt(i));if (!TempPanelWidget)continue;// 保存 UI 面板以及布局数据AbovePanelStack.Push(TempPanelWidget);FUINature TempUINature;UOverlaySlot* TempPanelSlot = Cast<UOverlaySlot>(TempPanelWidget->Slot);TempUINature.Offsets = TempPanelSlot->Padding;TempUINature.HAlign = TempPanelSlot->HorizontalAlignment;TempUINature.VAlign = TempPanelSlot->VerticalAlignment;AboveNatureStack.Push(TempUINature);}// 循环移除上层 UI 面板for (int i = 0; i < AbovePanelStack.Num(); ++i)AbovePanelStack[i]->RemoveFromParent();// 添加遮罩到新的父控件UOverlaySlot* MaskSlot = WorkLayout->AddChildToOverlay(MaskPanel);MaskSlot->SetPadding(FMargin(0.f, 0.f, 0.f, 0.f));MaskSlot->SetHorizontalAlignment(HAlign_Fill);MaskSlot->SetVerticalAlignment(VAlign_Fill);// 根据透明类型设置透明度switch (PanelWidget->UINature.PanelLucencyType) {case EPanelLucencyType::Lucency:MaskPanel->SetVisibility(ESlateVisibility::Visible);MaskPanel->SetColorAndOpacity(NormalLucency);break;case EPanelLucencyType::Translucence:MaskPanel->SetVisibility(ESlateVisibility::Visible);MaskPanel->SetColorAndOpacity(TranslucenceLucency);break;case EPanelLucencyType::ImPenetrable:MaskPanel->SetVisibility(ESlateVisibility::Visible);MaskPanel->SetColorAndOpacity(ImPenetrableLucency);break;case EPanelLucencyType::Penetrate:MaskPanel->SetVisibility(ESlateVisibility::Hidden);MaskPanel->SetColorAndOpacity(NormalLucency);break;}// 将 UI 面板填充回布局控件for (int i = 0; i < AbovePanelStack.Num(); ++i) {UOverlaySlot* PanelSlot = WorkLayout->AddChildToOverlay(AbovePanelStack[i]);PanelSlot->SetPadding(AboveNatureStack[i].Offsets);PanelSlot->SetHorizontalAlignment(AboveNatureStack[i].HAlign);PanelSlot->SetVerticalAlignment(AboveNatureStack[i].VAlign);}}
}

接下来我们测试一下弹窗隐藏和重新显示的逻辑是否正常运行。依旧是修改协程方法里的调用顺序。

RCGameUIFrame.cpp

// 修改协程方法如下
DDCoroTask* URCGameUIFrame::UIProcess()
{DDCORO_PARAM(URCGameUIFrame);#include DDCORO_BEGIN()// 显示状态栏和小地图D->ShowUIPanel("StatePanel");D->ShowUIPanel("MiniMapPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);		// 缩短时间// 显示菜单栏D->ShowUIPanel("MenuPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);// 显示设置栏D->ShowUIPanel("OptionPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);// 隐藏菜单栏，这个操作会失败并输出 Debug 错误D->HideUIPanel("MenuPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);// 隐藏设置栏D->HideUIPanel("OptionPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);// 隐藏菜单栏，本次操作成功D->HideUIPanel("MenuPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);	// 显示菜单栏D->ShowUIPanel("MenuPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);// 显示设置栏D->ShowUIPanel("OptionPanel");#include DDCORO_END()
}

运行游戏，可见界面上有状态栏和小地图，
3 秒后菜单弹窗伴随着遮罩出现，菜单弹窗可交互；
再 3 秒后设置弹窗出现，遮罩移到它的底下，菜单弹窗不可交互，设置弹窗可交互；
再 3 秒后试图隐藏菜单弹窗，但是它不是最靠前的弹窗，所以左上角输出 Debug 语句提示失败。
再 3 秒后设置弹窗隐藏，遮罩移到菜单弹窗的底下，并且菜单弹窗又恢复可交互；
再 3 秒菜单弹窗和遮罩隐藏；
再 3 秒，菜单弹窗和遮罩重新出现，菜单弹窗可交互；
最后再 3 秒，设置弹窗出现，遮罩移到它的底下，菜单弹窗不可交互，设置弹窗可交互；

说明我们写的遮罩管理器以及弹窗的隐藏和重新显示都没有问题。

59. UI 面板销毁

UI 框架已经实现了大半，我们接下来继续实现 UI 的销毁功能。对于销毁逻辑也需要根据面板类型来使用相应的方法。

DDFrameWidget.h

public:// 销毁 UIUFUNCTION()void ExitUIPanel(FName PanelName);// 处理 UI 面板销毁后的父控件（供反射系统调用）UFUNCTION()void ExitCallBack(ELayoutType LayoutType, UPanelWidget* InLayout);protected:// 销毁 UIvoid ExitPanelDoNothing(UDDPanelWidget* PanelWidget);void ExitPanelHideOther(UDDPanelWidget* PanelWidget);void ExitPanelReverse(UDDPanelWidget* PanelWidget);

DDFrameWidget.cpp

void UDDFrameWidget::ExitUIPanel(FName PanelName)
{// 如果正在预加载但是没有加载完成（这种情况出现在执行第一次显示或提前加载后就马上执行销毁界面）if (!AllPanelGroup.Contains(PanelName) && LoadedPanelName.Contains(PanelName)) {DDH::Debug() << "Do Not Exit UI Panel when Loading Panel" << DDH::Endl();return;}// 如果这个 UI 面板没有加载到全部组if (!AllPanelGroup.Contains(PanelName))return;// 获取 UI 面板UDDPanelWidget* PanelWidget = *AllPanelGroup.Find(PanelName);// 是否在显示组或者弹窗栈内if (!ShowPanelGroup.Contains(PanelName) && !PopPanelStack.Contains(PanelName)) {AllPanelGroup.Remove(PanelName);LoadedPanelName.Remove(PanelName);// 运行 PanelExit 生命周期，具体的内存释放代码在该周期函数里面PanelWidget->PanelExit();// 直接返回return;}// 处理隐藏 UI 面板相关的流程switch (PanelWidget->UINature.PanelShowType) {case EPanelShowType::DoNothing:ExitPanelDoNothing(PanelWidget);break;case EPanelShowType::HideOther:ExitPanelHideOther(PanelWidget);break;case EPanelShowType::Reverse:ExitPanelReverse(PanelWidget);break;}
}void UDDFrameWidget::ExitPanelDoNothing(UDDPanelWidget* PanelWidget)
{// 从显示组，全部组，加载名字组移除ShowPanelGroup.Remove(PanelWidget->GetObjectName());AllPanelGroup.Remove(PanelWidget->GetObjectName());LoadedPanelName.Remove(PanelWidget->GetObjectName());// 运行销毁生命周期PanelWidget->PanelExit();
}void UDDFrameWidget::ExitPanelHideOther(UDDPanelWidget* PanelWidget)
{// 从显示组，全部组，加载名字组移除ShowPanelGroup.Remove(PanelWidget->GetObjectName());AllPanelGroup.Remove(PanelWidget->GetObjectName());LoadedPanelName.Remove(PanelWidget->GetObjectName());// 显示同一层级下的其他 UI 面板，如果该面板是 Level_All 层级，显示所有显示组的面板for (TMap<FName, UDDPanelWidget*>::TIterator It(ShowPanelGroup); It; ++It) {if (PanelWidget->UINature.LayoutLevel == ELayoutLevel::Level_All || PanelWidget->UINature.LayoutLevel == It.Value()->UINature.LayoutLevel)It.Value()->PanelDisplay();}// 运行销毁生命周期PanelWidget->PanelExit();
}void UDDFrameWidget::ExitPanelReverse(UDDPanelWidget* PanelWidget)
{// 获取弹窗栈到数组TArray<UDDPanelWidget*> PopStack;PopPanelStack.GenerateValueArray(PopStack);// 如果不是最上层的弹窗，直接返回if (PopStack[PopStack.Num() - 1] != PanelWidget) {DDH::Debug() << PanelWidget->GetObjectName() << " Is Not Last Panel In PopPanelStack" << DDH::Endl();return;}// 从栈，全部组，加载名字组中移除PopPanelStack.Remove(PanelWidget->GetObjectName());AllPanelGroup.Remove(PanelWidget->GetObjectName());LoadedPanelName.Remove(PanelWidget->GetObjectName());// 运行销毁生命周期函数PanelWidget->PanelExit();// 调整弹窗栈PopStack.Pop();if (PopStack.Num() > 0) {UDDPanelWidget* PrePanelWidget = PopStack[PopStack.Num() - 1];// 转移遮罩到新的最顶层的弹窗的下一层TransferMask(PrePanelWidget);// 恢复被冻结的最顶层的弹窗PrePanelWidget->PanelResume();}elseRemoveMaskPanel();
}void UDDFrameWidget::ExitCallBack(ELayoutType LayoutType, UPanelWidget* InLayout)
{if (LayoutType == ELayoutType::Canvas) {UCanvasPanel* WorkLayout = Cast<UCanvasPanel>(InLayout);if (WorkLayout->GetChildrenCount() == 0) {WorkLayout->RemoveFromParent();ActiveCanvas.Remove(WorkLayout);UnActiveCanvas.Push(WorkLayout);}}else {UOverlay* WorkLayout = Cast<UOverlay>(InLayout);if (WorkLayout->GetChildrenCount() == 0) {WorkLayout->RemoveFromParent();ActiveOverlay.Remove(WorkLayout);UnActiveOverlay.Push(WorkLayout);}}
}

来到 DDPanelWidget，编写销毁 UI 的具体逻辑。

因为需要考虑面板销毁后父控件是否还有子面板（如果没有就没必要存在了），所以我们利用反射系统声明一个方法来调用 DDFrameWidget 里的方法来移除没有内容的父控件。

DDPanelWidget.h

protected:// 销毁动画回调函数void RemoveCallBack();protected:// UIFrame 管理器所在的模组 ID，约定在 HUD 下，数值是 1static int32 UIFrameModuleIndex;// UIFrame 管理器的对象名，约定是 UIFramestatic FName UIFrameName;// 销毁回调函数名字static FName ExitCallBackName;protected:DDOBJFUNC_TWO(ExitCallBack, ELayoutType, LayoutType, UPanelWidget*, WorkLayout);

DDPanelWidget.cpp

int32 UDDPanelWidget::UIFrameModuleIndex(1);FName UDDPanelWidget::UIFrameName(TEXT("UIFrame"));FName UDDPanelWidget::ExitCallBackName(TEXT("ExitCallBack"));void UDDPanelWidget::PanelExit()
{// 如果 UI 面板正在显示if (GetVisibility() != ESlateVisibility::Hidden)InvokeDelay(PanelHiddenName, DisplayLeaveMovie(), this, &UDDPanelWidget::RemoveCallBack);elseRemoveCallBack();
}void UDDPanelWidget::RemoveCallBack()
{// 获取父控件UPanelWidget* WorkLayout = GetParent();// 这个判断条件会在下一集补充// 已经加载了 UI 面板，但是一直没有运行显示命令的情况下，WorkLayout 为空if (WorkLayout) {RemoveFromParent();// 告诉 UI 管理器处理父控件ExitCallBack(UIFrameModuleIndex, UIFrameName, ExitCallBackName, UINature.LayoutType, WorkLayout);}// 执行销毁DDDestroy();
}

接下来测试下销毁 UI 的逻辑是否正常运行，依旧是调整协程方法里的调用逻辑。

RCGameUIFrame.cpp

// 修改协程方法如下
DDCoroTask* URCGameUIFrame::UIProcess()
{DDCORO_PARAM(URCGameUIFrame);#include DDCORO_BEGIN()D->ShowUIPanel("StatePanel");D->ShowUIPanel("MiniMapPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);D->ShowUIPanel("BigMapPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);D->ShowUIPanel("MenuPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);D->ShowUIPanel("OptionPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);DDH::Debug() << "ExitUIPanel MiniMapPanel" << DDH::Endl();D->ExitUIPanel("MiniMapPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);DDH::Debug() << "ExitUIPanel OptionPanel" << DDH::Endl();D->ExitUIPanel("OptionPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);DDH::Debug() << "ExitUIPanel BigMapPanel" << DDH::Endl();D->ExitUIPanel("BigMapPanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);DDH::Debug() << "ExitUIPanel StatePanel" << DDH::Endl();D->ExitUIPanel("StatePanel");#include DDYIELD_READY()DDYIELD_RETURN_SECOND(3.f);DDH::Debug() << "ExitUIPanel MenuPanel" << DDH::Endl();D->ExitUIPanel("MenuPanel");#include DDCORO_END()
}

运行游戏，首先可看到状态栏和小地图；接着是大地图出现（状态栏和小地图收起）；菜单弹窗出现；设置弹窗出现；
随后销毁小地图、销毁设置弹窗、销毁大地图（状态栏出现）、销毁状态栏，最后销毁菜单弹窗。
说明销毁 UI 的功能也写好了。

60. 框架完成与总结

课程已经接近尾声，本集开头会修改一些疏漏的地方，笔者已经在先前的课程里标注了。

我们前面写了很多 UI 框架的方法，但是看起来都是管理类在操控面板，我们打算让面板自己也能执行这些操控方法，只要通过反射系统让管理类执行就可以实现了。

DDPanelWidget.h

protected:void ShowSelfPanel();void HideSelfPanel();void ExitSelfPanel();void AdvanceLoadPanel(FName PanelName);void ShowUIPanel(FName PanelName);void HideUIPanel(FName PanelName);void ExitUIPanel(FName PanelName);protected:// 显示 UI 方法名static FName ShowUIPanelName;// 隐藏 UI 方法名static FName HideUIPanelName;// 销毁 UI 方法名static FName ExitUIPanelName;// 预加载方法名static FName AdvanceLoadPanelName;protected:DDOBJFUNC_ONE(OperatorUIPanel, FName, PanelName);

DDPanelWidge.cpp

FName UDDPanelWidget::ShowUIPanelName(TEXT("ShowUIPanel"));FName UDDPanelWidget::HideUIPanelName(TEXT("HideUIPanel"));FName UDDPanelWidget::ExitUIPanelName(TEXT("ExitUIPanel"));FName UDDPanelWidget::AdvanceLoadPanelName(TEXT("AdvanceLoadPanel"));void UDDPanelWidget::ShowSelfPanel()
{ShowUIPanel(GetObjectName());
}void UDDPanelWidget::HideSelfPanel()
{HideUIPanel(GetObjectName());
}void UDDPanelWidget::ExitSelfPanel()
{ExitUIPanel(GetObjectName());
}void UDDPanelWidget::AdvanceLoadPanel(FName PanelName)
{OperatorUIPanel(UIFrameModuleIndex, UIFrameName, AdvanceLoadPanelName, PanelName);
}void UDDPanelWidget::ShowUIPanel(FName PanelName)
{OperatorUIPanel(UIFrameModuleIndex, UIFrameName, ShowUIPanelName, PanelName);
}void UDDPanelWidget::HideUIPanel(FName PanelName)
{OperatorUIPanel(UIFrameModuleIndex, UIFrameName, HideUIPanelName, PanelName);
}void UDDPanelWidget::ExitUIPanel(FName PanelName)
{OperatorUIPanel(UIFrameModuleIndex, UIFrameName, ExitUIPanelName, PanelName);
}

最后再改一些地方的错误。

DDTypes.h

// 执行 Execute 方法之前必须手动调用 IsBound() 方法判定是否有绑定函数
template<typename RetType, typename... VarTypes>
RetType DDCallHandle<RetType, VarTypes...>::Execute(VarTypes... Params)
{// 删除原来的 是否绑定 判断return MsgQuene->Execute<RetType, VarTypes...>(CallName, Params...);
}

DDDriver.cpp

#if WITH_EDITOR
void ADDDriver::PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent)
{Super::PostEditChangeProperty(PropertyChangedEvent);if (PropertyChangedEvent.Property && PropertyChangedEvent.Property->GetFName() == GET_MEMBER_NAME_CHECKED(ADDDriver, ModuleType)) {Center->IterChangeModuleType(Center, ModuleType);}
}
#endif// 下面这两个方法要放在预编译的 #if WITH_EDITOR 之外，笔者检查的时候已经是放在外面的了，应该是在前面的课程也有提到这个修改
void ADDDriver::ExecuteFunction(DDModuleAgreement Agreement, DDParam* Param)
{Center->AllotExecuteFunction(Agreement, Param);
}void ADDDriver::ExecuteFunction(DDObjectAgreement Agreement, DDParam* Param)
{Center->AllotExecuteFunction(Agreement, Param);
}

最后我们来看一下梁迪老师的 DataDriven 框架实现了如下功能：

1. 模块化树状结构（适合分模块多人合作开发）
2. 更多生命周期函数
3. 反射事件系统（零耦合, 调用方便）
4. 注册事件系统（零耦合, 运行效率高, 适合大批量调用时使用）
5. 协程系统（全面实现 Unity 协程的功能）
6. 延时事件系统
7. 多按键绑定系统
8. 资源同异步加载系统
9. UI 框架

至于坦克大战，应该是没有的了。不过能系统地学习梁迪老师的这个框架，相信读者也能收获到很多。笔者在此衷心感谢梁迪老师的优质课程 : )