Component Overlap not working C++

Development Programming & Scripting
, ,
1

Hello. I’m trying to add some simple collision code for a teapot shooting teabags inside a teacup.
This is my cpp file:

// Fill out your copyright notice in the Description page of Project Settings.


#include "Teacup.h"

// Sets default values
ATeacup::ATeacup()
{
 	// 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;

	TeacupMesh = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("Teacup Mesh"));
	TeacupMesh->SetupAttachment(RootComponent);
	
	CollisionBox = CreateDefaultSubobject<UBoxComponent>(TEXT("Collision Box"));
	CollisionBox->SetupAttachment(TeacupMesh);
	CollisionBox->SetBoxExtent(FVector(32.0f, 32.0f, 32.0f));
	CollisionBox->SetRelativeLocation(FVector(0.0f, 0.0f, 50.0f));
	CollisionBox->SetCollisionProfileName("Trigger");

}

// Called when the game starts or when spawned
void ATeacup::BeginPlay()
{
	Super::BeginPlay();
	UE_LOG(LogTemp, Warning, TEXT("BeginPlay called for Teacup!"));
	CollisionBox->OnComponentBeginOverlap.AddDynamic(this, &ATeacup::OnOverlapBegin);
	CollisionBox->OnComponentEndOverlap.AddDynamic(this, &ATeacup::OnOverlapEnd);
}

// Called every frame
void ATeacup::Tick(float DeltaTime)
{
	Super::Tick(DeltaTime);

}

void ATeacup::OnOverlapBegin(UPrimitiveComponent* OverlappedComp, AActor* OtherActor,
	UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult)
{
	UE_LOG(LogTemp, Warning, TEXT("Entered collision"));
}

void ATeacup::OnOverlapEnd(UPrimitiveComponent* OverlappedComp, AActor* OtherActor,
	UPrimitiveComponent* OtherComp, int32 OtherBodyIndex)
{
	UE_LOG(LogTemp, Warning, TEXT("Exit collision"));
}

And this is my header file:

// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "Components/BoxComponent.h"
#include "GameFramework/Actor.h"
#include "Teacup.generated.h"

UCLASS()
class LAB1PART2_2023_API ATeacup : public AActor
{
	GENERATED_BODY()
	
public:	
	// Sets default values for this actor's properties
	ATeacup();

protected:
	// Called when the game starts or when spawned
	virtual void BeginPlay() override;

public:	
	// Called every frame
	virtual void Tick(float DeltaTime) override;

private:
	UPROPERTY(VisibleAnywhere)
	UStaticMeshComponent* TeacupMesh;
	UPROPERTY(VisibleAnywhere)
	UBoxComponent* CollisionBox;

	UFUNCTION()
	void OnOverlapBegin(UPrimitiveComponent* OverlappedComp, AActor* OtherActor, UPrimitiveComponent*
		OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult);
	UFUNCTION()
	void OnOverlapEnd(UPrimitiveComponent* OverlappedComp, AActor* OtherActor, UPrimitiveComponent*
		OtherComp, int32 OtherBodyIndex);
};

There is a collision box component that I plan to use to score points in the game or something of that sort. Now as much as I try, the overlap functions do not work, as I do not see a message in the log. The actor supposed to interact with them is the teabag, with set collision BlockAllDynamic. What I have tried that works is going to the Blueprint event graph and placing a blueprint with a print script. And so I know that the collision areas are not the problem. What am I doing wrong? Please help, this has frustrated me endlessly.

2

You were 99% there. All you need to add to your CDO

ATeacup::ATeacup()
{
// your code start
// ....
CollisionBox->SetCollisionProfileName(Trigger);
// your code end

CollisionBox->SetGenerateOverlapEvents(true);

}