Add look input processor

Config/DefaultPHYInput.ini

@@ -3,3 +3,4 @@ DefaultMappingPriority=0
 bRouteInputThroughGenericInputSystem=True
 bBlockGameplayInputWhenUIFocused=True
 DefaultMoveInputProcessorClass="/Script/PHY.PHYInputProcessor_Move"
+DefaultLookInputProcessorClass="/Script/PHY.PHYInputProcessor_Look"

Source/PHY/Private/Input/PHYInputProcessor_Look.cpp

@@ -0,0 +1,83 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#include "Input/PHYInputProcessor_Look.h"
+
+#include UE_INLINE_GENERATED_CPP_BY_NAME(PHYInputProcessor_Look)
+
+#include "Characters/PHYPlayerCharacter.h"
+#include "GIPS_InputSystemComponent.h"
+#include "PHYGameplayTags.h"
+#include "Player/PHYPlayerController.h"
+
+UPHYInputProcessor_Look::UPHYInputProcessor_Look()
+{
+	InputTags.AddTag(PHYGameplayTags::Input_Look);
+	TriggerEvents = {
+		ETriggerEvent::Started,
+		ETriggerEvent::Triggered,
+		ETriggerEvent::Ongoing,
+		ETriggerEvent::Completed,
+		ETriggerEvent::Canceled
+	};
+}
+
+bool UPHYInputProcessor_Look::CheckCanHandleInput_Implementation(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, const FGameplayTag InputTag, const ETriggerEvent TriggerEvent) const
+{
+	(void)ActionData;
+	(void)TriggerEvent;
+
+	if (!IC || InputTag != PHYGameplayTags::Input_Look)
+	{
+		return false;
+	}
+
+	const APHYPlayerCharacter* PlayerCharacter = Cast<APHYPlayerCharacter>(IC->GetControlledPawn());
+	return PlayerCharacter && PlayerCharacter->GetController<APHYPlayerController>();
+}
+
+void UPHYInputProcessor_Look::HandleInputTriggered_Implementation(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, const FGameplayTag InputTag) const
+{
+	(void)InputTag;
+	RouteLookInput(IC, ActionData, ETriggerEvent::Triggered);
+}
+
+void UPHYInputProcessor_Look::HandleInputStarted_Implementation(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, const FGameplayTag InputTag) const
+{
+	(void)InputTag;
+	RouteLookInput(IC, ActionData, ETriggerEvent::Started);
+}
+
+void UPHYInputProcessor_Look::HandleInputOngoing_Implementation(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, const FGameplayTag InputTag) const
+{
+	(void)InputTag;
+	RouteLookInput(IC, ActionData, ETriggerEvent::Ongoing);
+}
+
+void UPHYInputProcessor_Look::HandleInputCanceled_Implementation(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, const FGameplayTag InputTag) const
+{
+	(void)InputTag;
+	RouteLookInput(IC, ActionData, ETriggerEvent::Canceled);
+}
+
+void UPHYInputProcessor_Look::HandleInputCompleted_Implementation(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, const FGameplayTag InputTag) const
+{
+	(void)InputTag;
+	RouteLookInput(IC, ActionData, ETriggerEvent::Completed);
+}
+
+FString UPHYInputProcessor_Look::GetEditorFriendlyName_Implementation() const
+{
+	return TEXT("PHY Look");
+}
+
+bool UPHYInputProcessor_Look::RouteLookInput(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, const ETriggerEvent TriggerEvent) const
+{
+	if (!IC)
+	{
+		return false;
+	}
+
+	APHYPlayerCharacter* PlayerCharacter = Cast<APHYPlayerCharacter>(IC->GetControlledPawn());
+	APHYPlayerController* PlayerController = PlayerCharacter ? PlayerCharacter->GetController<APHYPlayerController>() : nullptr;
+	return PlayerController ? PlayerController->RouteLookInputFromProcessor(ActionData, TriggerEvent) : false;
+}

Source/PHY/Private/Player/PHYPlayerController.cpp

@@ -105,7 +105,10 @@ void APHYPlayerController::OnReceivedInput(const FInputActionInstance& ActionDat
 
 	if (InputTag == PHYGameplayTags::Input_Look)
 	{
-		HandleLookInput(ActionData, TriggerEvent);
+		if (!ConsumeLookProcessorGuard(TriggerEvent))
+		{
+			RouteLookInput(ActionData, TriggerEvent);
+		}
 		return;
 	}
 
@@ -127,6 +130,18 @@ bool APHYPlayerController::RouteMoveInputFromProcessor(const FInputActionInstanc
 	return RouteMoveInput(ActionData, TriggerEvent);
 }
 
+bool APHYPlayerController::RouteLookInput(const FInputActionInstance& ActionData, const ETriggerEvent TriggerEvent)
+{
+	return HandleLookInput(ActionData, TriggerEvent);
+}
+
+bool APHYPlayerController::RouteLookInputFromProcessor(const FInputActionInstance& ActionData, const ETriggerEvent TriggerEvent)
+{
+	bLookInputHandledByProcessor = true;
+	LastLookInputProcessorTriggerEvent = TriggerEvent;
+	return RouteLookInput(ActionData, TriggerEvent);
+}
+
 bool APHYPlayerController::HandleMoveInput(const FInputActionInstance& ActionData, const ETriggerEvent TriggerEvent)
 {
 	APHYPlayerCharacter* PHYCharacter = GetPHYPlayerCharacter();
@@ -169,6 +184,20 @@ bool APHYPlayerController::ConsumeMoveProcessorGuard(const ETriggerEvent Trigger
 	return false;
 }
 
+bool APHYPlayerController::ConsumeLookProcessorGuard(const ETriggerEvent TriggerEvent)
+{
+	if (bLookInputHandledByProcessor && LastLookInputProcessorTriggerEvent == TriggerEvent)
+	{
+		bLookInputHandledByProcessor = false;
+		LastLookInputProcessorTriggerEvent = ETriggerEvent::None;
+		return true;
+	}
+
+	bLookInputHandledByProcessor = false;
+	LastLookInputProcessorTriggerEvent = ETriggerEvent::None;
+	return false;
+}
+
 bool APHYPlayerController::HandleLookInput(const FInputActionInstance& ActionData, const ETriggerEvent TriggerEvent)
 {
 	CachedLookInput = IsInputReleased(TriggerEvent) ? FVector2D::ZeroVector : ExtractAxis2D(ActionData.GetValue());

Source/PHY/Public/Input/PHYInputProcessor_Look.h

@@ -0,0 +1,48 @@
+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "GIPS_InputProcessor.h"
+#include "PHYInputProcessor_Look.generated.h"
+
+/**
+ * @brief PHY 视角输入处理器。
+ *
+ * 该处理器处理 `Input.Look`，并把二维视角输入值路由到当前玩家控制器。
+ */
+UCLASS(BlueprintType, Blueprintable, EditInlineNew, DefaultToInstanced)
+class PHY_API UPHYInputProcessor_Look : public UGIPS_InputProcessor
+{
+	GENERATED_BODY()
+
+public:
+	/** @brief 构造默认响应的输入 Tag 和触发事件。 */
+	UPHYInputProcessor_Look();
+
+protected:
+	/** @brief 检查当前输入组件是否能处理视角输入。 */
+	virtual bool CheckCanHandleInput_Implementation(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, FGameplayTag InputTag, ETriggerEvent TriggerEvent) const override;
+
+	/** @brief 处理 Triggered 视角输入。 */
+	virtual void HandleInputTriggered_Implementation(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, FGameplayTag InputTag) const override;
+
+	/** @brief 处理 Started 视角输入。 */
+	virtual void HandleInputStarted_Implementation(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, FGameplayTag InputTag) const override;
+
+	/** @brief 处理 Ongoing 视角输入。 */
+	virtual void HandleInputOngoing_Implementation(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, FGameplayTag InputTag) const override;
+
+	/** @brief 处理 Canceled 视角输入。 */
+	virtual void HandleInputCanceled_Implementation(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, FGameplayTag InputTag) const override;
+
+	/** @brief 处理 Completed 视角输入。 */
+	virtual void HandleInputCompleted_Implementation(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, FGameplayTag InputTag) const override;
+
+	/** @brief 返回编辑器里显示的处理器名称。 */
+	virtual FString GetEditorFriendlyName_Implementation() const override;
+
+private:
+	/** @brief 将视角输入发送给玩家控制器。 */
+	bool RouteLookInput(UGIPS_InputSystemComponent* IC, const FInputActionInstance& ActionData, ETriggerEvent TriggerEvent) const;
+};

Source/PHY/Public/PHYConfigSettings.h

@@ -59,6 +59,10 @@ public:
 	/** @brief 默认移动输入处理器类，用于创建 GenericInputSystem 控制配置。 */
 	UPROPERTY(Config)
 	TSoftClassPtr<UGIPS_InputProcessor> DefaultMoveInputProcessorClass;
+
+	/** @brief 默认视角输入处理器类，用于创建 GenericInputSystem 控制配置。 */
+	UPROPERTY(Config)
+	TSoftClassPtr<UGIPS_InputProcessor> DefaultLookInputProcessorClass;
 };
 
 /**

Source/PHY/Public/Player/PHYPlayerController.h

@@ -56,6 +56,12 @@ public:
 	/** @brief 从 GenericInputSystem 处理器路由移动输入，并阻止同一事件被广播 fallback 重复执行。 */
 	bool RouteMoveInputFromProcessor(const FInputActionInstance& ActionData, ETriggerEvent TriggerEvent);
 
+	/** @brief 从输入处理器或控制器 fallback 路由视角输入。 */
+	bool RouteLookInput(const FInputActionInstance& ActionData, ETriggerEvent TriggerEvent);
+
+	/** @brief 从 GenericInputSystem 处理器路由视角输入，并阻止同一事件被广播 fallback 重复执行。 */
+	bool RouteLookInputFromProcessor(const FInputActionInstance& ActionData, ETriggerEvent TriggerEvent);
+
 protected:
 	/** @brief 绑定 GenericInputSystem 输入委托。 */
 	virtual void BindInputEvents();
@@ -73,6 +79,9 @@ protected:
 	/** @brief 查询并消费移动处理器留下的重复执行保护。 */
 	virtual bool ConsumeMoveProcessorGuard(ETriggerEvent TriggerEvent);
 
+	/** @brief 查询并消费视角处理器留下的重复执行保护。 */
+	virtual bool ConsumeLookProcessorGuard(ETriggerEvent TriggerEvent);
+
 	/** @brief GenericInputSystem 路由组件。 */
 	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category="PHY|Input")
 	TObjectPtr<UGIPS_InputSystemComponent> InputSystemComponent;
@@ -100,4 +109,12 @@ protected:
 	/** @brief 最近一次由输入处理器处理的 Move 触发事件。 */
 	UPROPERTY(Transient)
 	ETriggerEvent LastMoveInputProcessorTriggerEvent = ETriggerEvent::None;
+
+	/** @brief 输入处理器是否已经处理了最近一次 Look 输入。 */
+	UPROPERTY(Transient)
+	bool bLookInputHandledByProcessor = false;
+
+	/** @brief 最近一次由输入处理器处理的 Look 触发事件。 */
+	UPROPERTY(Transient)
+	ETriggerEvent LastLookInputProcessorTriggerEvent = ETriggerEvent::None;
 };