Trigger Volume won't report name of actors present nor will the door open

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#1

I’ve tried some of the other suggestions already written here and none of them have worked. What am I missing?

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

#include "OpenDoor.h"
#include "GameFramework/Actor.h"
#include "Runtime/Engine/Classes/Engine/World.h"

#define OUT

// Sets default values for this component's properties
UOpenDoor::UOpenDoor()
{
	// Set this component to be initialized when the game starts, and to be ticked every frame.  You can turn these features
	// off to improve performance if you don't need them.
	PrimaryComponentTick.bCanEverTick = true;

	// ...
}


// Called when the game starts
void UOpenDoor::BeginPlay()
{
	Super::BeginPlay();

	Owner = GetOwner(); //Finds owning actor
}

void UOpenDoor::OpenDoor()
{
	Owner->SetActorRotation(FRotator(0.f, OpenAngle, 0.f));
}

void UOpenDoor::CloseDoor()
{
	Owner->SetActorRotation(FRotator(0.f, CloseAngle, 0.f));	
}


// Called every frame
void UOpenDoor::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
{
	Super::TickComponent(DeltaTime, TickType, ThisTickFunction);

	//Poll the trigger volume every frame.
	if (GetTotalMassOfActorsOnPlate() > 30.f) // TODO: Change into editor parameter.
	{
		//If the ActorThatOpens is in the volume then
		OpenDoor();
		LastDoorOpenTime = GetWorld()->GetTimeSeconds();
	}
	if (DoorCloseDelay <= GetWorld()->GetTimeSeconds() - LastDoorOpenTime)
	{
		CloseDoor();
	}
}

float UOpenDoor::GetTotalMassOfActorsOnPlate()
{
	float TotalMass = 0.f;

	//Find all the overlapping actors
	TArray<AActor*> OverlappingActors;
	//Iterates through them adding their masses
	for (const auto* Actor : OverlappingActors)
	{
		TotalMass += Actor->FindComponentByClass<UPrimitiveComponent>()->GetMass();
		UE_LOG(LogTemp, Warning, TEXT("%s is on the plate."), *Actor->GetName())
	}
	PressurePlate->GetOverlappingActors(OUT OverlappingActors);
	
	return TotalMass;
}
#2

Everyday I question my intelligence. Of course the plate isn’t going to do anything when GetOverlappingActors is called after the for loop. Changing the code from this…

float UOpenDoor::GetTotalMassOfActorsOnPlate()
{
float TotalMass = 0.f;

//Find all the overlapping actors
TArray<AActor*> OverlappingActors;
//Iterates through them adding their masses
for (const auto* Actor : OverlappingActors)
{
	TotalMass += Actor->FindComponentByClass<UPrimitiveComponent>()->GetMass();
	UE_LOG(LogTemp, Warning, TEXT("%s is on the plate."), *Actor->GetName())
}
PressurePlate->GetOverlappingActors(OUT OverlappingActors);

return TotalMass;
}

to this…

float UOpenDoor::GetTotalMassOfActorsOnPlate()
{
float TotalMass = 0.f;

//Find all the overlapping actors
TArray<AActor*> OverlappingActors;
PressurePlate->GetOverlappingActors(OUT OverlappingActors);
//Iterates through them adding their masses
for (const auto* Actor : OverlappingActors)
{
	TotalMass += Actor->FindComponentByClass<UPrimitiveComponent>()->GetMass();
	UE_LOG(LogTemp, Warning, TEXT("%s is on the plate."), *Actor->GetName())
}

return TotalMass;
}

fixes it.

#3

Nice!
Anyway, as I remember to any member, please share more detail and ALWAYS UE version and VS version!

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