211124 LineTrace C++

실습에서는 Input Action을 만들어 E를 누르면 InterActionPositive가 실행되게 바인딩했다. C++에서는 라인을 그려주지 않기 때문에 DrawDebugHelpers.h를 추가해주고 DrawDebugLine(), DrawDebugCirdle()등을 실현해주어야 한다.

#include "DrawDebugHelpers.h"


//......



void ATPlayer::InterActionPositive(const FInputActionValue& Value)
{
	FVector _Location;
	FRotator _Rotation;
	FHitResult _HitOut;

	GetController()->GetPlayerViewPoint(_Location, _Rotation);

	FVector _Start = _Location;
	FVector _End = (_Rotation.Vector() * 2000); //2000 -> distance


	FCollisionQueryParams _TraceParams;
	if (GetWorld()->LineTraceSingleByChannel(_HitOut, _Start, _End, ECC_Visibility, _TraceParams)) {
		_Start = GetActorLocation();
		_End = _HitOut.ImpactPoint;
	}
	else
	{
		_Start = GetActorLocation();
		_End = (GetActorRotation().Vector() * 20000);
	}
	DrawDebugLine(
		GetWorld(),
		_Start,
		_End,
		FColor::Magenta,
		true,
		10, 0, 5);

	DrawDebugSphere(
		GetWorld(),
		_End,
		10.f,
		5,
		FColor::Magenta,
		true,
		10, 0, 5);
	GEngine->AddOnScreenDebugMessage(-1, 5.0f, FColor::Magenta, TEXT("E Key Pressed "));

	

}

https://blog.naver.com/nhemch123/223183631419

이득우의 언리얼 C++ 게임 개발의 정석 08.14