this was nullptr when trying to get coordinates

Development Programming & Scripting AI
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11

LineTrace.h

#pragma once

#include "CoreMinimal.h"
#include "Components/ActorComponent.h"
#include "LineTrace.generated.h"

UCLASS(ClassGroup = (Custom), meta = (BlueprintSpawnableComponent))
class FIRSTGAME_API ULineTrace : public UActorComponent
{
	GENERATED_BODY()

public:

	ULineTrace();

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

public:
	FHitResult LineTraceSingle(FVector Start, FVector End);
	FHitResult LineTraceSingle(FVector Start, FVector End, bool ShowDebugLine);
	FHitResult SphereTrace(FVector Start, FVector End);

};

LineTrace.cpp

#include "LineTrace.h"
#include "Kismet/KismetSystemLibrary.h"
#include "Engine/Engine.h"
#include "DrawDebugHelpers.h"
#include "Kismet/GameplayStatics.h"
#include <Kismet/KismetMathLibrary.h>
#include "GameFramework/CharacterMovementComponent.h"
#include "GameFramework/Actor.h"

// Sets default values for this component's properties
ULineTrace::ULineTrace()
{

}


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

FHitResult ULineTrace::LineTraceSingle(FVector Start, FVector End)
{
	FHitResult HitResult;
	FCollisionObjectQueryParams CollisionParams;
	FCollisionQueryParams CollisionQueryParams;
	CollisionQueryParams.AddIgnoredActor(GetOwner());

	if (GetWorld()->LineTraceSingleByObjectType(
		OUT HitResult,
		Start,
		End,
		CollisionParams,
		CollisionQueryParams
	))
	{
		return HitResult;
	}
	else
	{
		return HitResult;
	}

}

FHitResult ULineTrace::LineTraceSingle(FVector Start, FVector End, bool ShowDebugLine)
{
	FHitResult Actor = LineTraceSingle(Start, End);
	if (ShowDebugLine) {
		DrawDebugLine(
			GetWorld(),
			Start,
			End,
			FColor::Red,
			false,
			3.0f,
			0,
			5.0f
		);
	}

	return Actor;
}