UE5 C++ SplineMesh蓝图函数库实现（小白笔记）_ue5 c++ ublueprintfunctionlibrary

UE5 C++ SplineMesh的蓝图函数库实现方法

 UAAABlueprintFunctionLibrary

UAAABlueprintFunctionLibrary.h

// Fill out your copyright notice in the Description page of Project Settings.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Components/SplineComponent.h"
#include "Components/SplineMeshComponent.h"
#include "Kismet/BlueprintFunctionLibrary.h"
#include "AAABlueprintFunctionLibrary.generated.h"
 
/**
 * 
 */
UENUM(BlueprintType)
enum class EMyEnum:uint8
{
		KeepRelativeTransform UMETA(DisplayName = "KeepRelativeTransform"),
		KeepWorldTransform UMETA(DisplayName = "KeepWorldTransform"),
};
 
UCLASS()
class SPLINECPP_API UAAABlueprintFunctionLibrary : public UBlueprintFunctionLibrary
{
	GENERATED_BODY()
public:
	UFUNCTION(BlueprintCallable,Category = "Move SplineMesh")
	static void CanSplineMeshMovAble(USplineComponent* Spline01,USplineComponent* Spline02,UStaticMesh* SplineStaticMesh,ESplineMeshAxis::Type ForwardAxis,ESplineCoordinateSpace::Type Scapse,bool Movable,EMyEnum MyEnumParam);
 
	static void abc();
private:
	static TArray<USplineMeshComponent*> BBB;
};

UAAABlueprintFunctionLibrary.cpp

// Fill out your copyright notice in the Description page of Project Settings.
 
 
#include "AAABlueprintFunctionLibrary.h"
 
#include <filesystem>
TArray<USplineMeshComponent*> UAAABlueprintFunctionLibrary::BBB;
 
void UAAABlueprintFunctionLibrary::CanSplineMeshMovAble(USplineComponent* Spline01, USplineComponent* Spline02,
                                                        UStaticMesh* SplineStaticMesh, ESplineMeshAxis::Type ForwardAxis, ESplineCoordinateSpace::Type Scapse,bool Movable,EMyEnum MyEnumParam)
{
	abc();
	if (!Spline01)
	{
		return;
	}
 
	Spline01->RegisterComponent();
	int32 Point = Spline01->GetNumberOfSplinePoints();
 
	if (Point<2)
	{
		return;
	}
	
	for (int32 i = 0; i<Point-1; i++)
	{
		FVector startlocation,startTangent,Endlocation,EndTangent;
		Spline01->GetLocationAndTangentAtSplinePoint(i,startlocation,startTangent,Scapse);
		Spline01->GetLocationAndTangentAtSplinePoint(i+1,Endlocation,EndTangent,Scapse);
 
		USplineMeshComponent* SplineMesh = NewObject<USplineMeshComponent>(Spline01);
		SplineMesh->SetMobility(EComponentMobility::Movable);
		SplineMesh->SetStaticMesh(SplineStaticMesh);
		SplineMesh->SetForwardAxis(ForwardAxis);
 
		SplineMesh->SetStartAndEnd(startlocation,startTangent,Endlocation,EndTangent);
		switch (MyEnumParam)
		{
		case EMyEnum::KeepRelativeTransform:
			SplineMesh->AttachToComponent(Spline01,FAttachmentTransformRules::KeepRelativeTransform);
			break;
		case EMyEnum::KeepWorldTransform:
			SplineMesh->AttachToComponent(Spline01,FAttachmentTransformRules::KeepWorldTransform);
			break;
			default:
				break;
		}
		SplineMesh->RegisterComponent();
 
		BBB.Add(SplineMesh);
		
		
	}
}
 
void UAAABlueprintFunctionLibrary::abc()
{
	//GEngine->AddOnScreenDebugMessage(-1,0.5f,FColor::Red,FString::Printf("%s"),BBB.GetTypeSize(),true);
	
}