#include "Components/BoxComponent.h"

.h

UPROPERTY(EditAnywhere,CateGory="OverlapComponent")

UBoxComponent* OverlapComponent; 

UFUNCTION()

void OnComponentBeginOverlap(UPrimitiveComponent* OverlappedComponent,AActor* OtherActor,UPrimitiveComponent* OtherComp,int32 OtherBodyIndex,bool bFromSweep,const FHitResult& SweepResult);

.cpp

AMyAcotr::AMyAcotr()

{

       OverlapComponent = CreateDefaultSubobject<UBoxComponent>(TEXT("OverlapComponent"));

        OverlapComponent->SetupAttachment(RootComponent);

        OverlapComponent->SetCollisionResponseToAllChannels(ECollisionResponse::ECR_Overlap);

}

void AMyActor::BeginPlay()

{

        OverlapComponent->OnComponentBeginOverlap.AddDynamic(this,&AMyActor::OnComponentBeginOverlap);

}

 void AMyActor:Tick(float DeltaTime)

{

        AddActorWorldOffset(MSpeed,True);

        AddActorWorldRotation(TSpeed,True);

}

void AMyActor::OnComponentBeginOverlap(UPrimitiveComponent* OverlappedComponent,AActor* OtherActor,UPrimitiveComponent* OtherComp,int32 OtherBodyIndex,bool bFromSweep,const FHitResult& SweepResult)

{

      //触发事件

}