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Plugins/GGS/Source/GenericUISystem/Public/UI/Mobile/GUIS_SimulatedInputWidget.h

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+// Copyright 2025 https://yuewu.dev/en  All Rights Reserved.
+
+#pragma once
+
+#include "CommonUserWidget.h"
+#include "InputCoreTypes.h"
+#include "CommonUserWidget.h"
+#include "GUIS_SimulatedInputWidget.generated.h"
+
+class UEnhancedInputLocalPlayerSubsystem;
+class UInputAction;
+class UCommonHardwareVisibilityBorder;
+class UEnhancedPlayerInput;
+
+/**
+ *  A UMG widget with base functionality to inject input (keys or input actions)
+ *  to the enhanced input subsystem.
+ */
+UCLASS()
+class GENERICUISYSTEM_API UGUIS_SimulatedInputWidget : public UCommonUserWidget
+{
+	GENERATED_BODY()
+
+public:
+	UGUIS_SimulatedInputWidget(const FObjectInitializer& ObjectInitializer);
+
+	//~ Begin UWidget
+#if WITH_EDITOR
+	virtual const FText GetPaletteCategory() override;
+#endif
+	//~ End UWidget interface
+
+	//~ Begin UUserWidget
+	virtual void NativeConstruct() override;
+	virtual void NativeDestruct() override;
+	virtual FReply NativeOnTouchEnded(const FGeometry& InGeometry, const FPointerEvent& InGestureEvent) override;
+	//~ End UUserWidget interface
+
+	/** Get the enhanced input subsystem based on the owning local player of this widget. Will return null if there is no owning player */
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category="GUIS")
+	UEnhancedInputLocalPlayerSubsystem* GetEnhancedInputSubsystem() const;
+
+	/** Get the current player input from the current input subsystem */
+	UEnhancedPlayerInput* GetPlayerInput() const;
+
+	/**  */
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category="GUIS")
+	const UInputAction* GetAssociatedAction() const { return AssociatedAction; }
+
+	/** Returns the current key that will be used to input any values. */
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category="GUIS")
+	FKey GetSimulatedKey() const { return KeyToSimulate; }
+
+	/**
+	 * Injects the given vector as an input to the current simulated key.
+	 * This calls "InputKey" on the current player.
+	 */
+	UFUNCTION(BlueprintCallable, Category="GUIS")
+	void InputKeyValue(const FVector& Value);
+
+	/**
+	 * Injects the given vector as an input to the current simulated key.
+	 * This calls "InputKey" on the current player.
+	 */
+	UFUNCTION(BlueprintCallable, Category="GUIS")
+	void InputKeyValue2D(const FVector2D& Value);
+
+	UFUNCTION(BlueprintCallable, Category="GUIS")
+	void FlushSimulatedInput();
+
+protected:
+	/** Set the KeyToSimulate based on a query from enhanced input about what keys are mapped to the associated action */
+	void QueryKeyToSimulate();
+
+	/** Called whenever control mappings change, so we have a chance to adapt our own keys */
+	UFUNCTION()
+	void OnControlMappingsRebuilt();
+
+	/** The common visibility border will allow you to specify UI for only specific platforms if desired */
+	UPROPERTY(BlueprintReadWrite, Category="GUIS", meta = (BindWidget))
+	TObjectPtr<UCommonHardwareVisibilityBorder> CommonVisibilityBorder = nullptr;
+
+	/** The associated input action that we should simulate input for */
+	UPROPERTY(EditAnywhere, BlueprintReadOnly, Category="GUIS")
+	TObjectPtr<const UInputAction> AssociatedAction = nullptr;
+
+	/** The Key to simulate input for in the case where none are currently bound to the associated action */
+	UPROPERTY(BlueprintReadOnly, EditAnywhere, Category="GUIS")
+	FKey FallbackBindingKey = EKeys::Gamepad_Right2D;
+
+	/** The key that should be input via InputKey on the player input */
+	FKey KeyToSimulate;
+};