Set Static Mesh at runtime c++

Development Programming & Scripting C++
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1

I am trying to make a weapon switch system. I wanna change static mesh with an input but when I try It doesn’t work. Any help would be appreciated.

2

How do you trying to switch it?

3

Ok but how you currently trying to do it? ;p question sounds like you attempting it

4

When 1 press for inatance I want the static mesh to be a pistol. When I press 2 a shotgun and so on.

5

Static mesh is attached to camera by the way, if that makes a difference.

6

I cant give the code right now but I use constructorhelpers to get static mesh reference. Then I use setstaticmesh inside void Pistol. Problem is that it either crashes or doesnt do anything. When i set static mesh in constructor it works just fine.

7

Hi,

You will need to created some Inputs. Go to Project Settings >> Input >> Action Mappings.

Set as many as you need.

291120-actionmapping.jpg

//In you character header file:

/** Set default weapon */
UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Weapon")
class UStaticMeshComponent* WeaponMesh;

/** Add inputs for weapon */
virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override;
	
/** Weapon 1 */
UFUNCTION()
void ChangeWeapon1();

/** Weapon 2 */
UFUNCTION()
void ChangeWeapon2();

/** Weapon 1 */
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Weapon")
class UStaticMesh* Weapon01;

/** Weapon 2 */
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Weapon")
class UStaticMesh* Weapon02;

//In your CPP file

#include "Components/StaticMeshComponent.h"
#include "UObject/ConstructorHelpers.h"
#include "Engine/StaticMesh.h"
#include "Components/InputComponent.h"
    
ACHARACTER::ACHARACTER()
{
     // set the mesh
    WeaponMesh = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("WEAPON"));
    // attach to root component
    WeaponMesh->SetupAttachment(GetRootComponent());
    
    // set path for static mesh
    static ConstructorHelpers::FObjectFinder<UStaticMesh> Shotgun(TEXT("'StaticMesh'/Engine/BasicShapes/Cylinder.Cylinder'"));
    
    // check if path is valid
    if (Shotgun.Succeeded())
    {
    	// mesh = valid path
    	WeaponMesh->SetStaticMesh(Shotgun.Object);
    	// set relative location of mesh
    	WeaponMesh->SetRelativeLocation(FVector(70.f, 0.f, 0.f));
    }
    
    	
    Weapon01 = CreateDefaultSubobject<UStaticMesh>("Weapon01");
    static ConstructorHelpers::FObjectFinder<UStaticMesh> WeaponA(TEXT("'/Game/Geometry/Meshes/1M_Cube_Chamfer.1M_Cube_Chamfer'"));
    
    // check if path is valid
    if (WeaponA.Succeeded())
    {
    	// mesh = valid path
    	Weapon01 = WeaponA.Object;
    }
    
    Weapon02 = CreateDefaultSubobject<UStaticMesh>("Weapon02");
    static ConstructorHelpers::FObjectFinder<UStaticMesh> WeaponB(TEXT("'/Engine/BasicShapes/Cone.Cone'"));
    
    // check if path is valid
    if (WeaponB.Succeeded())
    {
    	// mesh = valid path
    	Weapon02 = WeaponB.Object;
    }
    
}

        
void ACHARACTER::SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent)
{     
  Super::SetupPlayerInputComponent(PlayerInputComponent);
  // Set up gameplay key bindings
  check(PlayerInputComponent);
  PlayerInputComponent->BindAction("ChangeWeapon1", IE_Pressed, this, &ACHARACTER::ChangeWeapon1);
  PlayerInputComponent->BindAction("ChangeWeapon2", IE_Pressed, this, &ACHARACTER::ChangeWeapon2);

}
        
void ACHARACTER::ChangeWeapon1()
{      
        WeaponMesh->SetStaticMesh(Weapon01);
}
        
void ACHARACTER::ChangeWeapon2()
{
        WeaponMesh->SetStaticMesh(Weapon02);
}
5 Likes
8

God bless you man. I reall y hope you have multiple nice days.

1 Like
9

You’re welcome. You too. All the best!

10

yes, I too am very thankful for this

11

Thanks Man :3, maybe exist another way to set the static Mesh in c++? or only way to do this is using FObjectFinder?

12

Hey no probs. Perhaps, but this is the only way I know how to do it.

1 Like