Lots of refactoring related to Movement Component State. Still not done yet.

Source/Integration/MovementComponentState.h

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+// Copyright Epic Games, Inc. All Rights Reserved.
+
+#pragma once
+
+#include "CoreMinimal.h"
+#include "Kismet/BlueprintFunctionLibrary.h"
+#include "MovementComponentState.generated.h"
+
+//////////////////////////////////////////////////////////////
+//
+// Very often, the animation blueprint of a character will
+// want to know the state of the character movement
+// component, including such things as Velocity,
+// Acceleration, IsFalling, etc.  However, the movement
+// component cannot be accessed directly from the
+// animation graph, since it runs on a worker thread.
+// By copying the data into this plain struct, the
+// animation graph can safely read it.
+//
+//////////////////////////////////////////////////////////////
+
+USTRUCT(BlueprintType)
+struct INTEGRATION_API FlxMovementComponentState
+{
+	GENERATED_BODY()
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Luprex|Movement Component State")
+	FVector Velocity = FVector::ZeroVector;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Luprex|Movement Component State")
+	bool bIsAccelerating = false;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Luprex|Movement Component State")
+	float MaxWalkSpeed = 0.0f;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Luprex|Movement Component State")
+	TEnumAsByte<EMovementMode> MovementMode = MOVE_None;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Luprex|Movement Component State")
+	bool bIsFalling = false;
+
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Luprex|Movement Component State")
+	bool bIsCrouching = false;
+
+	FlxMovementComponentState() = default;
+	explicit FlxMovementComponentState(class UCharacterMovementComponent *CMC);
+};
+
+UCLASS()
+class INTEGRATION_API UlxMovementComponentStateLibrary : public UBlueprintFunctionLibrary
+{
+	GENERATED_BODY()
+
+public:
+	///////////////////////////////////////////////////////////
+	//
+	// True field getters.
+	//
+	///////////////////////////////////////////////////////////
+	
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Luprex|Movement Component State", meta = (BlueprintThreadSafe))
+	static FVector GetVelocity(const FlxMovementComponentState &State) { return State.Velocity; }
+
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Luprex|Movement Component State", meta = (BlueprintThreadSafe))
+	static bool GetIsAccelerating(const FlxMovementComponentState &State) { return State.bIsAccelerating; }
+
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Luprex|Movement Component State", meta = (BlueprintThreadSafe))
+	static float GetMaxWalkSpeed(const FlxMovementComponentState &State) { return State.MaxWalkSpeed; }
+
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Luprex|Movement Component State", meta = (BlueprintThreadSafe))
+	static EMovementMode GetMovementMode(const FlxMovementComponentState &State) { return State.MovementMode; }
+
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Luprex|Movement Component State", meta = (BlueprintThreadSafe))
+	static bool GetIsFalling(const FlxMovementComponentState &State) { return State.bIsFalling; }
+
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Luprex|Movement Component State", meta = (BlueprintThreadSafe))
+	static bool GetIsCrouching(const FlxMovementComponentState &State) { return State.bIsCrouching; }
+
+	///////////////////////////////////////////////////////////
+	//
+	// These are not true getters, but actually calculate
+	// simple values from the existing fields.
+	//
+	///////////////////////////////////////////////////////////
+	 
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Luprex|Movement Component State", meta = (BlueprintThreadSafe))
+	static float GetGroundSpeed(const FlxMovementComponentState &State) { return State.Velocity.Size2D(); }
+
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Luprex|Movement Component State", meta = (BlueprintThreadSafe))
+	static bool GetShouldMove(const FlxMovementComponentState &State);
+
+	///////////////////////////////////////////////////////////
+	//
+	// Debugging.
+	//
+	///////////////////////////////////////////////////////////
+
+	UFUNCTION(BlueprintCallable, BlueprintPure, Category = "Luprex|Movement Component State")
+	static FString DebugString(const FlxMovementComponentState &State);
+
+	///////////////////////////////////////////////////////////
+	//
+	// Other operations.
+	//
+	///////////////////////////////////////////////////////////
+
+	// Get a snapshot the Movement Component State.
+	//
+	// Normally, this just pulls data directly from the
+	// character movement component. However, we sometimes
+	// need to disable the movement component, especially
+	// during cutscenes.  We provide an alternative 'Fake
+	// Movement Component State' stored on the actor's
+	// UlxTangible. When the movement component's mode is
+	// MOVE_None, this function returns the fake movement
+	// component state instead.  The fake movement component
+	// state can be updated manually in blueprints.
+	//
+	UFUNCTION(BlueprintCallable, Category = "Luprex|Movement Component State", meta = (DefaultToSelf = "AnimInstance"))
+	static FlxMovementComponentState GetMovementComponentState(UAnimInstance *AnimInstance);
+
+	// Update the fake movement component state stored on
+	// the actor's tangible.  The fake movement component
+	// state is usually read by the animation blueprint
+	// when the real movement component is disabled.
+	//
+	UFUNCTION(BlueprintCallable, Category = "Luprex|Movement Component State", meta = (AutoCreateRefTerm = "State"))
+	static FlxMovementComponentState SetFakeMovementComponentState(AActor *Actor, const FlxMovementComponentState &State);
+};