sephirot47’s gists

sephirot47 / AlternativeDrawDebugFrustum.cpp

Last active August 3, 2023 22:01

UE4 C++ Alternative DrawDebugFrustum

	#pragma once

	#include "CoreMinimal.h"
	#include "EngineUtils.h"
	#include "DrawDebugHelpers.h"

	inline void DrawDebugQuad(const UWorld* World, const FVector& BotLeft, const FVector& TopLeft, const FVector& TopRight, const FVector& BotRight, const FColor& Color = FColor::Green, const bool bPersistentLines = false, const float LifeTime = -1.0f, const uint8_t DepthPriority = 0, const float Thickness = 0.0f)
	{
	DrawDebugLine(World, BotLeft, TopLeft, Color, bPersistentLines, LifeTime, DepthPriority, Thickness);
	DrawDebugLine(World, TopLeft, TopRight, Color, bPersistentLines, LifeTime, DepthPriority, Thickness);

sephirot47 / ShootThroughCrosshair.cpp

Created February 25, 2021 10:13

UE4 C++ Shoot through crosshair (or any other screen point)

	const APlayerController* PlayerController = GetWorld()->GetFirstPlayerController();

	// Get viewport size
	int ViewportSizeX, ViewportSizeY;
	PlayerController->GetViewportSize(ViewportSizeX, ViewportSizeY);

	// Deproject screen point
	FVector ShotStart, ShotDirection;
	PlayerController->DeprojectScreenPositionToWorld(ViewportSizeX * 0.5f, ViewportSizeY * 0.5f, ShotStart, ShotDirection); // Assuming crosshair is in screen center
	ShotStart += ShotDirection * 100.0f; // Offset a bit so that shot starts from gun end

sephirot47 / UE4 C++ MakeRotationFromAxes LookAt Up Vector .cpp

Created January 28, 2021 11:00

UE4 C++ MakeRotationFromAxes LookAt Up Vector

	#include "Kismet/KismetMathLibrary.h"

	UKismetMathLibrary::MakeRotationFromAxes( ForwardVector, RightVector, UpVector )

sephirot47 / UE4 C++ Spawn Actor from Blueprint .cpp

Last active May 26, 2023 18:24

UE4 C++ Spawn Actor from Blueprint


	// MyClass.h ==============================
	UClass *mBlueprintClass = nullptr;
	// ==========================================

	// MyClass.cpp ==============================
	MyClass::MyClass()
	{
	static ConstructorHelpers::FObjectFinder<UBlueprint> blueprint_finder(TEXT("Blueprint'/Game/Path/To/Asset/MyBlueprint.MyBlueprint'")); // This path can be obtained from the editor doing right click + "Copy Reference"
	if (blueprint_finder)

sephirot47 / WORST CODE OF ALL MY LIFE .class

Last active January 28, 2021 08:57

WORST CODE OF ALL MY LIFE ugliest idi android parking

	buttonTwoDatesPayments.setOnClickListener(new View.OnClickListener() {
	public void onClick(View v)
	{
	Calendar c = Calendar.getInstance();
	int mYear = c.get(Calendar.YEAR);
	int mMonth = c.get(Calendar.MONTH);
	int mDay = c.get(Calendar.DAY_OF_MONTH);

	DatePickerDialog datePicker = new DatePickerDialog( MainActivity.act,
	new DatePickerDialog.OnDateSetListener()

sephirot47 / UE4 Pause - Resume Game .cpp

Last active January 5, 2023 11:34

UE4 Pause - Resume Game

	/*
	There's a function you can call to pause / resume the game in UE4:

	UGameplayStatics::SetGamePaused(GetWorld(), true); //true = paused, false = resume

	So you would do something like this:
	*/

	void Pause()
	{

sephirot47 / UE4 OnBeginOverlap - OnEndOverlap (Collision stuff) .cpp

Last active September 30, 2024 14:57

UE4 OnBeginOverlap - OnEndOverlap (Collision stuff)

	// For Components =================================
	UFUNCTION()
	void OnBeginOverlap(class AActor* OtherActor, class UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult & SweepResult);
	UFUNCTION()
	void OnEndOverlap(class AActor* OtherActor, class UPrimitiveComponent* OtherComp, int32 OtherBodyIndex);

	// Register events in BeginPlay
	OnComponentBeginOverlap.AddDynamic(this, &MyClass::OnBeginOverlap); //Register the BeginOverlap event
	OnComponentEndOverlap.AddDynamic(this, &MyClass::OnEndOverlap); //Register the EndOverlap event
	// =================================================

sephirot47 / UE4 Get Camera Location or Position and Forward Vector .cpp

Last active February 7, 2025 10:14

UE4 Get Camera Location or Position and Forward Vector (useful for Tracing)

	APlayerCameraManager *camManager = GetWorld()->GetFirstPlayerController()->PlayerCameraManager;
	FVector camLocation = camManager->GetCameraLocation();
	FVector camForward = camManager->GetCameraRotation().Vector();

sephirot47 / UE4 Draw Debug Line .cpp

Last active August 21, 2023 07:05

UE4 Draw Debug Line

	#include "DrawDebugHelpers.h"
	DrawDebugLine(GetWorld(), traceStart, traceEnd, FColor::Green, true, 1.0f);

sephirot47 / UE4 C++ Set Object Type or Set Collision Channel Type .cpp

Last active July 14, 2023 12:33

UE4 C++ Set Object Type or Set Collision Channel Type

	/*
	Ok, so you want to change your Object Type (or collision channel) to a custom channel in runtime.
	But there's a problem, it seems UE4 doesn't support this yet, but there's a workaround hehe :)

	For example, imagine you create the ObjectType Building.
	Now, imagine you want to change the ObjectType of all the StaticMeshComponents of the object OBJECT (from WorldStatic to Building, for example).

	You can try something like this:
	*/

Victor Anton Dominguez sephirot47