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UE Crashes on startup

I recently started C++ in UE.
I created class DefaultPlayer. I added few components and a simple movement. When I compiled this class UE crashed. Now it crashes every time I enter this project, making it unusable.
Here's my DefaultPlayer.h:

 // Fill out your copyright notice in the Description page of Project Settings.
 #pragma once
 #include "GameFramework/Pawn.h"
 #include "DefaultPlayer.generated.h"
 class UNREALISAAC_API ADefaultPlayer : public APawn
     // Sets default values for this pawn's properties
     // Called when the game starts or when spawned
     virtual void BeginPlay() override;
     // Called every frame
     virtual void Tick( float DeltaSeconds ) override;
     // Called to bind functionality to input
     virtual void SetupPlayerInputComponent(class UInputComponent* InputComponent) override;
     // Movement
     FVector2D MovementInput;
     FVector2D RotationInput;
     void MoveForward(float AxisValue);
     void MoveRight(float AxisValue);
     // Components
     UShapeComponent* PlayerCollision;
     UCameraComponent* PlayerCamera;

And DefaultPlayer.cpp:

 // Fill out your copyright notice in the Description page of Project Settings.
 #include "UnrealIsaac.h"
 #include "DefaultPlayer.h"
 // Sets default values
      // Set this pawn to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
     PrimaryActorTick.bCanEverTick = true;
     RootComponent = PlayerCollision;
     PlayerCamera->SetRelativeLocation(FVector(0.0f, 0.0f, 50.0f));
     PlayerCamera->bUsePawnControlRotation = true;
 // Called when the game starts or when spawned
 void ADefaultPlayer::BeginPlay()
 // Called every frame
 void ADefaultPlayer::Tick( float DeltaTime )
     Super::Tick( DeltaTime );
     MovementInput = MovementInput.GetSafeNormal() * 500.0f;
     FVector NewLocation = GetActorLocation();
     NewLocation += GetActorForwardVector() * MovementInput.X * DeltaTime;
     NewLocation += GetActorRightVector() * MovementInput.Y * DeltaTime;
 // Called to bind functionality to input
 void ADefaultPlayer::SetupPlayerInputComponent(class UInputComponent* InputComponent)
     InputComponent->BindAxis("W-S", this, &ADefaultPlayer::MoveForward);
     InputComponent->BindAxis("A-D", this, &ADefaultPlayer::MoveRight);
 // Movement
 void ADefaultPlayer::MoveForward(float AxisValue)
     MovementInput.X = FMath::Clamp<float>(AxisValue, -1.0f, 1.0f);
 void ADefaultPlayer::MoveRight(float AxisValue)
     MovementInput.Y = FMath::Clamp<float>(AxisValue, -1.0f, 1.0f);

It's 3rd project I've lost because of this. What am I doing wrong?
Please help me.

Product Version: UE 4.14
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asked Jan 15 '17 at 03:03 PM in C++ Programming

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1 answer: sort voted first

It is

 PlayerCollision = CreateDefaultSubobject(TEXT("PlayerCollision"));
 PlayerCamera = CreateDefaultSubobject(TEXT("PlayerCamera"));

and not


I am pretty sure this is the crash because you are accessing an uninitialized object. You should be able to tell the problem from the crash log. It will output which file and line it crashed in. With that info you can debug your stuff faster!

Cheers, Kishore

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answered Jan 15 '17 at 07:07 PM

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avatar image J0K3R_12QQ Jan 16 '17 at 03:27 PM

Thank you!

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