Add Generic UI foundation

Config/DefaultGame.ini

@@ -2,6 +2,9 @@
 [/Script/CommonUI.CommonUISettings]
 CommonButtonAcceptKeyHandling=TriggerClick
 
+[/Script/GenericUISystem.GUIS_GenericUISystemSettings]
+GameUIPolicyClass="/Script/PHY.PHYGameUIPolicy"
+
 [/Script/EngineSettings.GeneralProjectSettings]
 ProjectID=E7C26E1F4D195F0DBE49C2A3E5017988
 CopyrightNotice=

Config/DefaultPHYUI.ini

@@ -1,4 +1,11 @@
 [/Script/PHY.PHYUISettings]
 bUseCommonUI=True
+bUseGenericUISystem=True
 bOpenMenusWithGameplayPause=False
+RootLayoutClass="/Script/PHY.PHYGameUILayout"
+DefaultHUDWidgetClass="/Script/PHY.PHYHUDStatusWidget"
+GameplayLayerTag=(TagName="UI.Layer.Game")
+HUDLayerTag=(TagName="UI.Layer.HUD")
+MenuLayerTag=(TagName="UI.Layer.Menu")
+ModalLayerTag=(TagName="UI.Layer.Modal")
 DefaultHUDLayerName=HUD

PHY.uproject

@@ -77,6 +77,10 @@
 		{
 			"Name": "EnhancedInput",
 			"Enabled": true
+		},
+		{
+			"Name": "CommonUI",
+			"Enabled": true
 		}
 	]
 }

Source/PHY/PHY.Build.cs

@@ -19,10 +19,16 @@ public class PHY : ModuleRules
 			"GameplayAbilities",
 			"GameplayTasks",
 			"ModularGameplay",
+			"CommonUI",
+			"CommonInput",
+			"UMG",
+			"Slate",
+			"SlateCore",
 			"GenericGameplayAbilities",
 			"GenericCombatSystem",
 			"GenericInputSystem",
 			"GenericGameSystem",
+			"GenericUISystem",
 			"GenericEffectsSystem",
 			"SLSCore",
 			"SmoothLocomotionSystem",

Source/PHY/Private/Game/PHYHUD.cpp

@@ -4,6 +4,16 @@
 
 #include UE_INLINE_GENERATED_CPP_BY_NAME(PHYHUD)
 
+#include "CommonActivatableWidget.h"
+#include "Engine/GameInstance.h"
+#include "GameplayTags/PHYGameplayTags_UI.h"
+#include "PHYConfigSettings.h"
+#include "UI/GUIS_GameUILayout.h"
+#include "UI/GUIS_GameUIPolicy.h"
+#include "UI/GUIS_GameUISubsystem.h"
+#include "UI/PHYHUDStatusWidget.h"
+#include "UI/PHYPlayerUIContext.h"
+
 APHYHUD::APHYHUD(const FObjectInitializer& ObjectInitializer)
 	: Super(ObjectInitializer)
 {
@@ -23,6 +33,81 @@ void APHYHUD::InitializeHUDForPlayer(APlayerController* OwningPlayerController)
 		return;
 	}
 
-	// UI 专家后续在这里接入 GenericUISystem/CommonUI 的根层级。
+	if (InitializeGenericUIForPlayer(OwningPlayerController))
+	{
+		DefaultHUDWidget = PushDefaultHUDWidget(OwningPlayerController);
 		bHUDInitialized = true;
+	}
+}
+
+bool APHYHUD::InitializeGenericUIForPlayer(APlayerController* OwningPlayerController)
+{
+	if (!OwningPlayerController || !OwningPlayerController->IsLocalController())
+	{
+		return false;
+	}
+
+	const UPHYUISettings* UISettings = GetDefault<UPHYUISettings>();
+	if (!UISettings || !UISettings->bUseCommonUI || !UISettings->bUseGenericUISystem)
+	{
+		return false;
+	}
+
+	ULocalPlayer* LocalPlayer = OwningPlayerController->GetLocalPlayer();
+	if (!LocalPlayer)
+	{
+		return false;
+	}
+
+	UGameInstance* GameInstance = OwningPlayerController->GetGameInstance();
+	UGUIS_GameUISubsystem* GameUISubsystem = GameInstance ? GameInstance->GetSubsystem<UGUIS_GameUISubsystem>() : nullptr;
+	if (!GameUISubsystem)
+	{
+		return false;
+	}
+
+	GameUISubsystem->AddPlayer(LocalPlayer);
+
+	if (!PlayerUIContext)
+	{
+		PlayerUIContext = NewObject<UPHYPlayerUIContext>(this);
+	}
+	PlayerUIContext->InitializeForPlayer(OwningPlayerController);
+
+	GameUISubsystem->RegisterUIContextForPlayer(LocalPlayer, PlayerUIContext, PlayerUIContextBindingHandle);
+	return true;
+}
+
+UCommonActivatableWidget* APHYHUD::PushDefaultHUDWidget(APlayerController* OwningPlayerController)
+{
+	if (!OwningPlayerController || DefaultHUDWidget)
+	{
+		return DefaultHUDWidget;
+	}
+
+	const UPHYUISettings* UISettings = GetDefault<UPHYUISettings>();
+	TSubclassOf<UCommonActivatableWidget> HUDWidgetClass = UPHYHUDStatusWidget::StaticClass();
+	if (UISettings && !UISettings->DefaultHUDWidgetClass.IsNull())
+	{
+		if (UClass* LoadedHUDWidgetClass = UISettings->DefaultHUDWidgetClass.LoadSynchronous())
+		{
+			HUDWidgetClass = LoadedHUDWidgetClass;
+		}
+	}
+
+	ULocalPlayer* LocalPlayer = OwningPlayerController->GetLocalPlayer();
+	if (!LocalPlayer)
+	{
+		return nullptr;
+	}
+
+	UGUIS_GameUIPolicy* UIPolicy = UGUIS_GameUIPolicy::GetGameUIPolicy(OwningPlayerController);
+	UGUIS_GameUILayout* RootLayout = UIPolicy ? UIPolicy->GetRootLayout(LocalPlayer) : nullptr;
+	if (!RootLayout)
+	{
+		return nullptr;
+	}
+
+	const FGameplayTag HUDLayerTag = (UISettings && UISettings->HUDLayerTag.IsValid()) ? UISettings->HUDLayerTag : PHYGameplayTags::UI_Layer_HUD;
+	return RootLayout->PushWidgetToLayerStack<UCommonActivatableWidget>(HUDLayerTag, HUDWidgetClass);
 }

Source/PHY/Private/GameplayTags/PHYGameplayTags_UI.cpp

@@ -0,0 +1,12 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#include "GameplayTags/PHYGameplayTags_UI.h"
+
+// UI 层级 Tag 是 GenericUISystem 注册和推送界面的稳定路由，不使用裸字符串。
+namespace PHYGameplayTags
+{
+	UE_DEFINE_GAMEPLAY_TAG(UI_Layer_Game, "UI.Layer.Game");
+	UE_DEFINE_GAMEPLAY_TAG(UI_Layer_HUD, "UI.Layer.HUD");
+	UE_DEFINE_GAMEPLAY_TAG(UI_Layer_Menu, "UI.Layer.Menu");
+	UE_DEFINE_GAMEPLAY_TAG(UI_Layer_Modal, "UI.Layer.Modal");
+}

Source/PHY/Private/UI/PHYGameUILayout.cpp

@@ -0,0 +1,93 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#include "UI/PHYGameUILayout.h"
+
+#include UE_INLINE_GENERATED_CPP_BY_NAME(PHYGameUILayout)
+
+#include "Blueprint/WidgetTree.h"
+#include "Components/Overlay.h"
+#include "Components/OverlaySlot.h"
+#include "GameplayTags/PHYGameplayTags_UI.h"
+#include "Widgets/CommonActivatableWidgetContainer.h"
+#include "Widgets/SWidget.h"
+
+UPHYGameUILayout::UPHYGameUILayout(const FObjectInitializer& ObjectInitializer)
+	: Super(ObjectInitializer)
+{
+}
+
+TSharedRef<SWidget> UPHYGameUILayout::RebuildWidget()
+{
+	BuildNativeLayoutTree();
+	RegisterNativeLayers();
+
+	return Super::RebuildWidget();
+}
+
+void UPHYGameUILayout::BuildNativeLayoutTree()
+{
+	if (!WidgetTree)
+	{
+		WidgetTree = NewObject<UWidgetTree>(this, TEXT("WidgetTree"), RF_Transient);
+	}
+
+	if (WidgetTree->RootWidget && GameLayerStack && HUDLayerStack && MenuLayerStack && ModalLayerStack)
+	{
+		return;
+	}
+
+	UOverlay* RootOverlay = WidgetTree->ConstructWidget<UOverlay>(UOverlay::StaticClass(), TEXT("RootOverlay"));
+	WidgetTree->RootWidget = RootOverlay;
+
+	GameLayerStack = AddLayerStack(RootOverlay, TEXT("GameLayerStack"));
+	HUDLayerStack = AddLayerStack(RootOverlay, TEXT("HUDLayerStack"));
+	MenuLayerStack = AddLayerStack(RootOverlay, TEXT("MenuLayerStack"));
+	ModalLayerStack = AddLayerStack(RootOverlay, TEXT("ModalLayerStack"));
+
+	bNativeLayersRegistered = false;
+}
+
+UCommonActivatableWidgetStack* UPHYGameUILayout::AddLayerStack(UOverlay* RootOverlay, const FName StackName) const
+{
+	if (!RootOverlay || !WidgetTree)
+	{
+		return nullptr;
+	}
+
+	UCommonActivatableWidgetStack* LayerStack = WidgetTree->ConstructWidget<UCommonActivatableWidgetStack>(UCommonActivatableWidgetStack::StaticClass(), StackName);
+	if (UOverlaySlot* LayerSlot = RootOverlay->AddChildToOverlay(LayerStack))
+	{
+		LayerSlot->SetHorizontalAlignment(HAlign_Fill);
+		LayerSlot->SetVerticalAlignment(VAlign_Fill);
+		LayerSlot->SetPadding(FMargin(0.0f));
+	}
+
+	return LayerStack;
+}
+
+void UPHYGameUILayout::RegisterNativeLayers()
+{
+	if (bNativeLayersRegistered)
+	{
+		return;
+	}
+
+	if (GameLayerStack)
+	{
+		RegisterLayer(PHYGameplayTags::UI_Layer_Game, GameLayerStack);
+	}
+	if (HUDLayerStack)
+	{
+		RegisterLayer(PHYGameplayTags::UI_Layer_HUD, HUDLayerStack);
+	}
+	if (MenuLayerStack)
+	{
+		RegisterLayer(PHYGameplayTags::UI_Layer_Menu, MenuLayerStack);
+	}
+	if (ModalLayerStack)
+	{
+		RegisterLayer(PHYGameplayTags::UI_Layer_Modal, ModalLayerStack);
+	}
+
+	bNativeLayersRegistered = true;
+}

Source/PHY/Private/UI/PHYGameUIPolicy.cpp

@@ -0,0 +1,37 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#include "UI/PHYGameUIPolicy.h"
+
+#include UE_INLINE_GENERATED_CPP_BY_NAME(PHYGameUIPolicy)
+
+#include "PHYConfigSettings.h"
+#include "UI/PHYGameUILayout.h"
+#include "UObject/UnrealType.h"
+
+UPHYGameUIPolicy::UPHYGameUIPolicy(const FObjectInitializer& ObjectInitializer)
+	: Super(ObjectInitializer)
+{
+	ApplyConfiguredLayoutClass();
+}
+
+void UPHYGameUIPolicy::ApplyConfiguredLayoutClass()
+{
+	TSubclassOf<UGUIS_GameUILayout> SelectedLayoutClass = UPHYGameUILayout::StaticClass();
+
+	if (const UPHYUISettings* UISettings = GetDefault<UPHYUISettings>())
+	{
+		if (!UISettings->RootLayoutClass.IsNull())
+		{
+			if (UClass* LoadedLayoutClass = UISettings->RootLayoutClass.LoadSynchronous())
+			{
+				SelectedLayoutClass = LoadedLayoutClass;
+			}
+		}
+	}
+
+	// GenericUISystem 将 LayoutClass 设为私有 EditAnywhere 属性；这里通过反射写入 C++ 默认布局，避免创建仅用于赋默认值的蓝图资产。
+	if (const FSoftClassProperty* LayoutClassProperty = FindFProperty<FSoftClassProperty>(UGUIS_GameUIPolicy::StaticClass(), TEXT("LayoutClass")))
+	{
+		LayoutClassProperty->SetPropertyValue_InContainer(this, FSoftObjectPtr(SelectedLayoutClass.Get()));
+	}
+}

Source/PHY/Private/UI/PHYHUDStatusWidget.cpp

@@ -0,0 +1,144 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#include "UI/PHYHUDStatusWidget.h"
+
+#include UE_INLINE_GENERATED_CPP_BY_NAME(PHYHUDStatusWidget)
+
+#include "Blueprint/WidgetTree.h"
+#include "Components/Overlay.h"
+#include "Components/OverlaySlot.h"
+#include "Components/ProgressBar.h"
+#include "Components/SafeZone.h"
+#include "Components/TextBlock.h"
+#include "Components/VerticalBox.h"
+#include "Components/VerticalBoxSlot.h"
+#include "Fonts/SlateFontInfo.h"
+#include "Styling/CoreStyle.h"
+#include "Widgets/SWidget.h"
+
+namespace
+{
+	FText MakeResourceText(const TCHAR* Label, const float Value, const float MaxValue)
+	{
+		return FText::FromString(FString::Printf(TEXT("%s %.0f / %.0f"), Label, FMath::Max(0.0f, Value), FMath::Max(0.0f, MaxValue)));
+	}
+
+	float MakeResourcePercent(const float Value, const float MaxValue)
+	{
+		return MaxValue > UE_SMALL_NUMBER ? FMath::Clamp(Value / MaxValue, 0.0f, 1.0f) : 0.0f;
+	}
+}
+
+UPHYHUDStatusWidget::UPHYHUDStatusWidget(const FObjectInitializer& ObjectInitializer)
+	: Super(ObjectInitializer)
+{
+	InputConfig = EGUIS_ActivatableWidgetInputMode::Default;
+}
+
+TSharedRef<SWidget> UPHYHUDStatusWidget::RebuildWidget()
+{
+	BuildNativeWidgetTree();
+	return Super::RebuildWidget();
+}
+
+void UPHYHUDStatusWidget::SynchronizeProperties()
+{
+	Super::SynchronizeProperties();
+	UpdateResourceWidgets();
+}
+
+void UPHYHUDStatusWidget::SetHealth(const float NewHealth, const float NewMaxHealth)
+{
+	Health = NewHealth;
+	MaxHealth = NewMaxHealth;
+	UpdateResourceWidgets();
+}
+
+void UPHYHUDStatusWidget::SetStamina(const float NewStamina, const float NewMaxStamina)
+{
+	Stamina = NewStamina;
+	MaxStamina = NewMaxStamina;
+	UpdateResourceWidgets();
+}
+
+void UPHYHUDStatusWidget::BuildNativeWidgetTree()
+{
+	if (!WidgetTree)
+	{
+		WidgetTree = NewObject<UWidgetTree>(this, TEXT("WidgetTree"), RF_Transient);
+	}
+
+	if (WidgetTree->RootWidget && TitleText && HealthText && HealthBar && StaminaText && StaminaBar)
+	{
+		return;
+	}
+
+	USafeZone* RootSafeZone = WidgetTree->ConstructWidget<USafeZone>(USafeZone::StaticClass(), TEXT("RootSafeZone"));
+	UOverlay* RootOverlay = WidgetTree->ConstructWidget<UOverlay>(UOverlay::StaticClass(), TEXT("RootOverlay"));
+	UVerticalBox* StatusBox = WidgetTree->ConstructWidget<UVerticalBox>(UVerticalBox::StaticClass(), TEXT("StatusBox"));
+
+	WidgetTree->RootWidget = RootSafeZone;
+	RootSafeZone->SetContent(RootOverlay);
+
+	if (UOverlaySlot* StatusSlot = RootOverlay->AddChildToOverlay(StatusBox))
+	{
+		StatusSlot->SetHorizontalAlignment(HAlign_Left);
+		StatusSlot->SetVerticalAlignment(VAlign_Top);
+		StatusSlot->SetPadding(FMargin(32.0f, 24.0f, 0.0f, 0.0f));
+	}
+
+	TitleText = WidgetTree->ConstructWidget<UTextBlock>(UTextBlock::StaticClass(), TEXT("TitleText"));
+	TitleText->SetText(FText::FromString(TEXT("PHY")));
+	TitleText->SetFont(FSlateFontInfo(FCoreStyle::GetDefaultFont(), 22));
+	TitleText->SetColorAndOpacity(FSlateColor(FLinearColor(0.85f, 0.95f, 1.0f, 1.0f)));
+	if (UVerticalBoxSlot* TitleSlot = StatusBox->AddChildToVerticalBox(TitleText))
+	{
+		TitleSlot->SetPadding(FMargin(0.0f, 0.0f, 0.0f, 8.0f));
+	}
+
+	HealthText = WidgetTree->ConstructWidget<UTextBlock>(UTextBlock::StaticClass(), TEXT("HealthText"));
+	HealthText->SetFont(FSlateFontInfo(FCoreStyle::GetDefaultFont(), 16));
+	HealthText->SetColorAndOpacity(FSlateColor(FLinearColor(0.95f, 0.95f, 0.95f, 1.0f)));
+	StatusBox->AddChildToVerticalBox(HealthText);
+
+	HealthBar = WidgetTree->ConstructWidget<UProgressBar>(UProgressBar::StaticClass(), TEXT("HealthBar"));
+	HealthBar->SetFillColorAndOpacity(FLinearColor(0.76f, 0.12f, 0.12f, 1.0f));
+	if (UVerticalBoxSlot* HealthBarSlot = StatusBox->AddChildToVerticalBox(HealthBar))
+	{
+		HealthBarSlot->SetPadding(FMargin(0.0f, 2.0f, 0.0f, 8.0f));
+	}
+
+	StaminaText = WidgetTree->ConstructWidget<UTextBlock>(UTextBlock::StaticClass(), TEXT("StaminaText"));
+	StaminaText->SetFont(FSlateFontInfo(FCoreStyle::GetDefaultFont(), 16));
+	StaminaText->SetColorAndOpacity(FSlateColor(FLinearColor(0.95f, 0.95f, 0.95f, 1.0f)));
+	StatusBox->AddChildToVerticalBox(StaminaText);
+
+	StaminaBar = WidgetTree->ConstructWidget<UProgressBar>(UProgressBar::StaticClass(), TEXT("StaminaBar"));
+	StaminaBar->SetFillColorAndOpacity(FLinearColor(0.12f, 0.62f, 0.86f, 1.0f));
+	if (UVerticalBoxSlot* StaminaBarSlot = StatusBox->AddChildToVerticalBox(StaminaBar))
+	{
+		StaminaBarSlot->SetPadding(FMargin(0.0f, 2.0f, 0.0f, 0.0f));
+	}
+
+	UpdateResourceWidgets();
+}
+
+void UPHYHUDStatusWidget::UpdateResourceWidgets()
+{
+	if (HealthText)
+	{
+		HealthText->SetText(MakeResourceText(TEXT("HP"), Health, MaxHealth));
+	}
+	if (HealthBar)
+	{
+		HealthBar->SetPercent(MakeResourcePercent(Health, MaxHealth));
+	}
+	if (StaminaText)
+	{
+		StaminaText->SetText(MakeResourceText(TEXT("ST"), Stamina, MaxStamina));
+	}
+	if (StaminaBar)
+	{
+		StaminaBar->SetPercent(MakeResourcePercent(Stamina, MaxStamina));
+	}
+}

Source/PHY/Private/UI/PHYPlayerUIContext.cpp

@@ -0,0 +1,18 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#include "UI/PHYPlayerUIContext.h"
+
+#include UE_INLINE_GENERATED_CPP_BY_NAME(PHYPlayerUIContext)
+
+#include "GameFramework/PlayerController.h"
+
+void UPHYPlayerUIContext::InitializeForPlayer(APlayerController* InPlayerController)
+{
+	PlayerController = InPlayerController;
+	RefreshPawn();
+}
+
+void UPHYPlayerUIContext::RefreshPawn()
+{
+	Pawn = PlayerController.IsValid() ? PlayerController->GetPawn() : nullptr;
+}

Source/PHY/Public/Game/PHYHUD.h

@@ -4,8 +4,12 @@
 
 #include "CoreMinimal.h"
 #include "GameFramework/HUD.h"
+#include "UI/GUIS_GameUIStructLibrary.h"
 #include "PHYHUD.generated.h"
 
+class UCommonActivatableWidget;
+class UPHYPlayerUIContext;
+
 /**
  * @brief PHY HUD 根入口。
  *
@@ -33,6 +37,23 @@ public:
 	bool IsHUDInitialized() const { return bHUDInitialized; }
 
 protected:
+	/** @brief 注册 GenericUISystem 本地玩家根布局和项目 UI 上下文。 */
+	virtual bool InitializeGenericUIForPlayer(APlayerController* OwningPlayerController);
+
+	/** @brief 推入默认 HUD 控件。 */
+	virtual UCommonActivatableWidget* PushDefaultHUDWidget(APlayerController* OwningPlayerController);
+
+	/** @brief 当前本地玩家 UI 上下文。 */
+	UPROPERTY(Transient)
+	TObjectPtr<UPHYPlayerUIContext> PlayerUIContext;
+
+	/** @brief 当前本地玩家 UI 上下文注册句柄。 */
+	UPROPERTY(Transient)
+	FGUIS_UIContextBindingHandle PlayerUIContextBindingHandle;
+
+	/** @brief 默认 HUD 控件实例。 */
+	UPROPERTY(Transient, BlueprintReadOnly, Category="PHY|UI")
+	TObjectPtr<UCommonActivatableWidget> DefaultHUDWidget;
 	/** @brief HUD 是否已经完成基础初始化。 */
 	UPROPERTY(Transient, BlueprintReadOnly, Category="PHY|UI")
 	bool bHUDInitialized = false;

Source/PHY/Public/GameplayTags/PHYGameplayTags_UI.h

@@ -0,0 +1,23 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include "NativeGameplayTags.h"
+
+/**
+ * @brief PHY UI 层级 Gameplay Tag 定义。
+ */
+namespace PHYGameplayTags
+{
+	/** @brief 非阻塞 gameplay 承载层，用于后续准星、交互提示等常驻玩法 UI。 */
+	UE_DECLARE_GAMEPLAY_TAG_EXTERN(UI_Layer_Game);
+
+	/** @brief HUD 承载层，用于血条、资源、快捷栏等常驻玩家界面。 */
+	UE_DECLARE_GAMEPLAY_TAG_EXTERN(UI_Layer_HUD);
+
+	/** @brief 菜单承载层，用于背包、角色、设置等可交互界面。 */
+	UE_DECLARE_GAMEPLAY_TAG_EXTERN(UI_Layer_Menu);
+
+	/** @brief 模态承载层，用于确认框、错误提示等最高优先级界面。 */
+	UE_DECLARE_GAMEPLAY_TAG_EXTERN(UI_Layer_Modal);
+}

Source/PHY/Public/PHYConfigSettings.h

@@ -3,11 +3,14 @@
 #pragma once
 
 #include "CoreMinimal.h"
+#include "GameplayTagContainer.h"
 #include "UObject/Object.h"
 #include "UObject/SoftObjectPtr.h"
 #include "PHYConfigSettings.generated.h"
 
+class UCommonActivatableWidget;
 class UGIPS_InputProcessor;
+class UGUIS_GameUILayout;
 
 /**
  * @brief PHY 项目核心配置。
@@ -148,10 +151,38 @@ public:
 	UPROPERTY(Config)
 	bool bUseCommonUI = true;
 
+	/** @brief 是否启用 GenericUISystem 作为项目 UI 根层级和推送系统。 */
+	UPROPERTY(Config)
+	bool bUseGenericUISystem = true;
+
 	/** @brief 打开菜单时是否暂停 Gameplay。 */
 	UPROPERTY(Config)
 	bool bOpenMenusWithGameplayPause = false;
 
+	/** @brief 原生根布局类，默认使用项目 C++ 布局并在其中注册 Generic UI 层。 */
+	UPROPERTY(Config)
+	TSoftClassPtr<UGUIS_GameUILayout> RootLayoutClass;
+
+	/** @brief 默认 HUD 控件类，本地玩家 HUD 初始化时推入 HUD 层。 */
+	UPROPERTY(Config)
+	TSoftClassPtr<UCommonActivatableWidget> DefaultHUDWidgetClass;
+
+	/** @brief 默认 gameplay 层 Tag。 */
+	UPROPERTY(Config)
+	FGameplayTag GameplayLayerTag;
+
+	/** @brief 默认 HUD 层 Tag。 */
+	UPROPERTY(Config)
+	FGameplayTag HUDLayerTag;
+
+	/** @brief 默认菜单层 Tag。 */
+	UPROPERTY(Config)
+	FGameplayTag MenuLayerTag;
+
+	/** @brief 默认模态层 Tag。 */
+	UPROPERTY(Config)
+	FGameplayTag ModalLayerTag;
+
 	/** @brief 默认 HUD 层名称。 */
 	UPROPERTY(Config)
 	FName DefaultHUDLayerName = TEXT("HUD");

Source/PHY/Public/PHYGameplayTags.h

@@ -9,6 +9,7 @@
 #include "GameplayTags/PHYGameplayTags_Event.h"
 #include "GameplayTags/PHYGameplayTags_Input.h"
 #include "GameplayTags/PHYGameplayTags_State.h"
+#include "GameplayTags/PHYGameplayTags_UI.h"
 
 /**
  * @brief PHY 项目的原生 Gameplay Tag 聚合入口。

Source/PHY/Public/UI/PHYGameUILayout.h

@@ -0,0 +1,58 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "UI/GUIS_GameUILayout.h"
+#include "PHYGameUILayout.generated.h"
+
+class UCommonActivatableWidgetStack;
+class UOverlay;
+
+/**
+ * @brief PHY 原生游戏 UI 根布局。
+ *
+ * 以 GenericUISystem 的 UGUIS_GameUILayout 为基类，在 C++ 中创建并注册 Game、HUD、Menu、Modal 四个层级。
+ */
+UCLASS(BlueprintType, Blueprintable)
+class PHY_API UPHYGameUILayout : public UGUIS_GameUILayout
+{
+	GENERATED_BODY()
+
+public:
+	/** @brief 构造根布局。 */
+	UPHYGameUILayout(const FObjectInitializer& ObjectInitializer = FObjectInitializer::Get());
+
+	/** @brief 构建原生 WidgetTree。 */
+	virtual TSharedRef<SWidget> RebuildWidget() override;
+
+protected:
+	/** @brief 构造根 Overlay 和各层 Stack。 */
+	void BuildNativeLayoutTree();
+
+	/** @brief 向根 Overlay 添加一个全屏层 Stack。 */
+	UCommonActivatableWidgetStack* AddLayerStack(UOverlay* RootOverlay, FName StackName) const;
+
+	/** @brief 注册 Native GameplayTag 到 GenericUISystem 层级表。 */
+	void RegisterNativeLayers();
+
+	/** @brief Gameplay 常驻层。 */
+	UPROPERTY(Transient)
+	TObjectPtr<UCommonActivatableWidgetStack> GameLayerStack;
+
+	/** @brief HUD 常驻层。 */
+	UPROPERTY(Transient)
+	TObjectPtr<UCommonActivatableWidgetStack> HUDLayerStack;
+
+	/** @brief 菜单交互层。 */
+	UPROPERTY(Transient)
+	TObjectPtr<UCommonActivatableWidgetStack> MenuLayerStack;
+
+	/** @brief 模态最高优先级层。 */
+	UPROPERTY(Transient)
+	TObjectPtr<UCommonActivatableWidgetStack> ModalLayerStack;
+
+	/** @brief 是否已将当前层 Stack 注册到 GenericUISystem。 */
+	UPROPERTY(Transient)
+	bool bNativeLayersRegistered = false;
+};

Source/PHY/Public/UI/PHYGameUIPolicy.h

@@ -0,0 +1,26 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "UI/GUIS_GameUIPolicy.h"
+#include "PHYGameUIPolicy.generated.h"
+
+/**
+ * @brief PHY GenericUISystem 策略。
+ *
+ * 负责把 GenericUISystem 的根布局指向项目 C++ 布局类，避免在 GameMode 或 HUD 中直接装配 UMG 层级。
+ */
+UCLASS(BlueprintType, Blueprintable)
+class PHY_API UPHYGameUIPolicy : public UGUIS_GameUIPolicy
+{
+	GENERATED_BODY()
+
+public:
+	/** @brief 构造策略并写入项目根布局类。 */
+	UPHYGameUIPolicy(const FObjectInitializer& ObjectInitializer = FObjectInitializer::Get());
+
+protected:
+	/** @brief 将项目配置中的 RootLayoutClass 写入 GenericUISystem 策略基类。 */
+	void ApplyConfiguredLayoutClass();
+};

Source/PHY/Public/UI/PHYHUDStatusWidget.h

@@ -0,0 +1,82 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "UI/GUIS_ActivatableWidget.h"
+#include "PHYHUDStatusWidget.generated.h"
+
+class UProgressBar;
+class UTextBlock;
+
+/**
+ * @brief PHY 默认 HUD 状态控件。
+ *
+ * 作为基础 UI 的 C++ 可见占位，后续战斗、背包、队伍等系统可以替换或扩展为项目资产。
+ */
+UCLASS(BlueprintType, Blueprintable)
+class PHY_API UPHYHUDStatusWidget : public UGUIS_ActivatableWidget
+{
+	GENERATED_BODY()
+
+public:
+	/** @brief 构造 HUD 状态控件。 */
+	UPHYHUDStatusWidget(const FObjectInitializer& ObjectInitializer = FObjectInitializer::Get());
+
+	/** @brief 构建原生 HUD WidgetTree。 */
+	virtual TSharedRef<SWidget> RebuildWidget() override;
+
+	/** @brief 同步文本和进度条显示。 */
+	virtual void SynchronizeProperties() override;
+
+	/** @brief 设置生命值显示。 */
+	UFUNCTION(BlueprintCallable, Category="PHY|UI")
+	void SetHealth(float NewHealth, float NewMaxHealth);
+
+	/** @brief 设置耐力值显示。 */
+	UFUNCTION(BlueprintCallable, Category="PHY|UI")
+	void SetStamina(float NewStamina, float NewMaxStamina);
+
+protected:
+	/** @brief 构造原生 HUD 树。 */
+	void BuildNativeWidgetTree();
+
+	/** @brief 刷新单条资源文本和进度条。 */
+	void UpdateResourceWidgets();
+
+	/** @brief 当前生命值。 */
+	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category="PHY|UI")
+	float Health = 100.0f;
+
+	/** @brief 当前最大生命值。 */
+	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category="PHY|UI")
+	float MaxHealth = 100.0f;
+
+	/** @brief 当前耐力值。 */
+	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category="PHY|UI")
+	float Stamina = 100.0f;
+
+	/** @brief 当前最大耐力值。 */
+	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category="PHY|UI")
+	float MaxStamina = 100.0f;
+
+	/** @brief 标题文本。 */
+	UPROPERTY(Transient)
+	TObjectPtr<UTextBlock> TitleText;
+
+	/** @brief 生命文本。 */
+	UPROPERTY(Transient)
+	TObjectPtr<UTextBlock> HealthText;
+
+	/** @brief 生命进度条。 */
+	UPROPERTY(Transient)
+	TObjectPtr<UProgressBar> HealthBar;
+
+	/** @brief 耐力文本。 */
+	UPROPERTY(Transient)
+	TObjectPtr<UTextBlock> StaminaText;
+
+	/** @brief 耐力进度条。 */
+	UPROPERTY(Transient)
+	TObjectPtr<UProgressBar> StaminaBar;
+};

Source/PHY/Public/UI/PHYPlayerUIContext.h

@@ -0,0 +1,47 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "UI/GUIS_GameUIContext.h"
+#include "PHYPlayerUIContext.generated.h"
+
+class APlayerController;
+class APawn;
+
+/**
+ * @brief 本地玩家 UI 上下文。
+ *
+ * 用于把 PlayerController、Pawn 等本地只读引用提供给 HUD、菜单和后续扩展界面。
+ */
+UCLASS(BlueprintType)
+class PHY_API UPHYPlayerUIContext : public UGUIS_GameUIContext
+{
+	GENERATED_BODY()
+
+public:
+	/** @brief 设置本地玩家控制器并刷新 Pawn 引用。 */
+	UFUNCTION(BlueprintCallable, Category="PHY|UI")
+	void InitializeForPlayer(APlayerController* InPlayerController);
+
+	/** @brief 刷新当前 Pawn 引用。 */
+	UFUNCTION(BlueprintCallable, Category="PHY|UI")
+	void RefreshPawn();
+
+	/** @brief 获取本地玩家控制器。 */
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category="PHY|UI")
+	APlayerController* GetPlayerController() const { return PlayerController.Get(); }
+
+	/** @brief 获取当前 Pawn。 */
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category="PHY|UI")
+	APawn* GetPawn() const { return Pawn.Get(); }
+
+private:
+	/** @brief 本地玩家控制器弱引用。 */
+	UPROPERTY(Transient)
+	TWeakObjectPtr<APlayerController> PlayerController;
+
+	/** @brief 当前 Pawn 弱引用。 */
+	UPROPERTY(Transient)
+	TWeakObjectPtr<APawn> Pawn;
+};