ButtonDemoManager.h

// Fill out your copyright notice in the Description page of Project Settings.#pragma once#include "CoreMinimal.h"
#include "GameFramework/Actor.h"
#include "Components/TimelineComponent.h"
#include "ButtonDemoManager.generated.h"UCLASS()
class LEARNCPRO_API AButtonDemoManager : public AActor
{GENERATED_BODY()public:	// Sets default values for this actor's propertiesAButtonDemoManager();UPROPERTY(EditAnywhere, Category = "UserWidget")TSubclassOf<class UMyUserWidgetBtton> WidgetClass;UPROPERTY(BlueprintReadWrite,EditAnywhere,Category="Demo")AActor* box;UPROPERTY(BlueprintReadWrite, EditAnywhere, Category = "Demo")FVector NewBoxPositionOffset;UPROPERTY(BlueprintReadWrite, EditAnywhere, Category = "Demo")class UMaterial* NewMat;FVector InitialLcation;FVector EndLocation;class UCurveFloat* TimeLineCurve;FTimeline PlatformTimeline;
protected:// Called when the game starts or when spawnedvirtual void BeginPlay() override;public:	// Called every framevirtual void Tick(float DeltaTime) override;UFUNCTION()void ChangeBoxPosition();UFUNCTION()void ChangeBoxMat();UFUNCTION()void MoveBoxTimeLine(float Value);
};

ButtonDemoManager.cpp

// Fill out your copyright notice in the Description page of Project Settings.#include "ButtonDemoManager.h"
#include "MyUserWidgetBtton.h"
#include "UMG\Public\Components\Button.h"#include "Kismet/GameplayStatics.h"// Sets default values
AButtonDemoManager::AButtonDemoManager()
{// Set this actor to call Tick() every frame.  You can turn this off to improve performance if you don't need it.PrimaryActorTick.bCanEverTick = true;static ConstructorHelpers::FObjectFinder<UCurveFloat>Curve(TEXT("/Game/MY/Cure/ButtonCure.ButtonCure"));if (Curve.Succeeded()){TimeLineCurve = Curve.Object;}
}// Called when the game starts or when spawned
void AButtonDemoManager::BeginPlay()
{Super::BeginPlay();APlayerController* myPlayerController = Cast<APlayerController>(UGameplayStatics::GetPlayerController(GetWorld(), 0));//设置鼠标输入模式if (myPlayerController != nullptr){myPlayerController->bShowMouseCursor = true;FInputModeGameOnly InputMode;InputMode.SetConsumeCaptureMouseDown(true);myPlayerController->SetInputMode(InputMode);}UMyUserWidgetBtton* widget = CreateWidget<UMyUserWidgetBtton>(GetWorld(), WidgetClass);if (widget != nullptr){widget->AddToViewport();}widget->ChangePosition->OnClicked.__Internal_AddDynamic(this, &AButtonDemoManager::ChangeBoxPosition, FName("ChangeBoxPosition"));widget->ChangeMat->OnClicked.__Internal_AddDynamic(this, &AButtonDemoManager::ChangeBoxMat, FName("ChangeBoxMat"));//TimeLineFOnTimelineFloatStatic FirstUpTimeLineCallBack;FirstUpTimeLineCallBack.BindUFunction(this, TEXT("MoveBoxTimeLine"));PlatformTimeline.AddInterpFloat(TimeLineCurve, FirstUpTimeLineCallBack);InitialLcation = box->GetActorLocation();EndLocation = InitialLcation + NewBoxPositionOffset;PlatformTimeline.SetPlayRate(1);
}// Called every frame
void AButtonDemoManager::Tick(float DeltaTime)
{Super::Tick(DeltaTime);PlatformTimeline.TickTimeline(DeltaTime);
}//直接移动
//void AButtonDemoManager::ChangeBoxPosition()
//{
//	box->AddActorLocalOffset(NewBoxPositionOffset);
//}
//TimeLine移动
void AButtonDemoManager::ChangeBoxPosition()
{PlatformTimeline.PlayFromStart();
}void AButtonDemoManager::ChangeBoxMat()
{UStaticMeshComponent* MeshCom = Cast<UStaticMeshComponent>(box->GetComponentByClass(UStaticMeshComponent::StaticClass()));MeshCom->SetMaterial(0, NewMat);
}void AButtonDemoManager::MoveBoxTimeLine(float Value)
{//GEngine->AddOnScreenDebugMessage(-1, 5.0f, FColor::Red, FString::SanitizeFloat(Value));InitialLcation = FMath::Lerp(InitialLcation, EndLocation, TimeLineCurve->GetFloatValue(Value));box->SetActorRelativeLocation(InitialLcation);
}

MyUserWidgetBtton.h

// Fill out your copyright notice in the Description page of Project Settings.
#pragma once
#include "CoreMinimal.h"
#include "Blueprint/UserWidget.h"
#include "MyUserWidgetBtton.generated.h"
/*** */
UCLASS()
class LEARNCPRO_API UMyUserWidgetBtton : public UUserWidget
{GENERATED_BODY()public:UPROPERTY(meta = (Bindwidget))class UButton* ChangePosition;UPROPERTY(meta = (Bindwidget))class UButton* ChangeMat;
};

MyUserWidgetBtton.cpp //里面啥都没有…

// Fill out your copyright notice in the Description page of Project Settings.#include "MyUserWidgetBtton.h"