Unreal Engine 4 C++ QtCretator short instruction

1_ue4qtcreator.txt

1) install qtcreator
2) install qt + desktop compilers

2) create new ue4 project (don't use white spaces in the path to project!!!)
3) add new C++ class

4) open QtCreator
5) QtCreator -> Open Project -> <path_to_ue4_project> -> [project].pro

6) QtCreator -> Projects
7) Select Desktop Qt... [double click]

8) Build -> Build Settings: Edit Build configuration = Debug

    Build Steps: remove qmake

    Build Steps -> Make -> Details -> Make Arguments = UE4Editor-Linux-Debug

    Clean Steps -> Make -> Details -> Make Arguments = UE4Editor-Linux-Debug ARGS="-clean"

    General -> Shadow Build [ ] (disabled)

9) Build -> Build Settings: Edit Build configuration = Release

    Build Steps: remove qmake

    Build Steps -> Make -> Details -> Make Arguments = UE4Editor

    Clean Steps -> Make -> Details -> Make Arguments = UE4Editor ARGS="-clean"

    General -> Shadow Build [ ] (disabled)

10) Run -> Run

    -> Executable = ...[FULL_PATH_TO_UE4Editor].../Engine/Binaries/Linux/UE4Editor

    -> Command line arguments = ...[FULL_PATH_TO_UE4_PROJECT]....uproject

    -> Working Directory = [EMPTY]

11) Run -> Run -> Debugger Settings -> Enable QML [ ] (disabled)

2_ue4cpp.txt

1) UE4Editor -> Content Browser -> Add New C++ Class -> Pawn

2) Open *.pro file in C++ IDE

3) There are needed code by UE4 Reflection System:

    #include "TypeName.generated.h"

    UCLASS()

    GENERATED_BODY()

4) Add StaticMesh, SprintArm, Camera to Pawn (into BasePlayer.h):

    (header) add includes:

        #include "Components/StaticMeshComponent.h"
        #include "GameFramework/SpringArmComponent.h"
        #include "Camera/CameraComponent.h"

        ( should be before line #include "BasePlayer.generated.h" )

    (header) add variables into class:

        // https://docs.unrealengine.com/en-US/ProgrammingAndScripting/GameplayArchitecture/Properties/index.html
        UPROPERTY(VisibleAnywhere, BlueprintReadOnly) // make variable visible in for UE4 Reflection System
        UStaticMeshComponent* Mesh;

        UPROPERTY(VisibleAnywhere, BlueprintReadOnly) // make variable visible in for UE4 Reflection System
        USpringArmComponent* SpringArm;

        UPROPERTY(VisibleAnywhere, BlueprintReadOnly) // make variable visible in for UE4 Reflection System
        UCameraComponent* Camera;

    (source) class constructor:

        // initaalize variables

        Mesh = CreateDefaultSubobject<UStaticMeshComponent>("Mesh");
        SpringArm = CreateDefaultSubobject<USpringArmComponent>("SpringArm");
        Camera = CreateDefaultSubobject<UCameraComponent>("Camera");

        // set hierarhy of components

        RootComponent = Mesh;
        SpringArm->SetupAttachment(Mesh);
        Camera->SetupAttachment(SpringArm);

5) Run Release or Debug

6) recompile and reload C++ code in UE4 (button in toolbar)