How to access function of a userwidget class from another class?

Development Programming & Scripting
1

// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "Components/TextBlock.h"
#include "Blueprint/UserWidget.h"
#include "UINew.generated.h"

/**
 * 
 */
UCLASS()
class ROLLABALL2_API UUINew : public UUserWidget
{
	GENERATED_BODY()

public:
	virtual void NativeConstruct() override;

public:
	//UPROPERTY(BlueprintReadOnly,meta =(BindWidget))
		UPROPERTY(meta = (BindWidget))
	    class UTextBlock* ScoreValue;

	UFUNCTION()
		void SetScoreValue(float score);

	
	
};


// Fill out your copyright notice in the Description page of Project Settings.


#include "Components/TextBlock.h"
#include "Blueprint/UserWidget.h"
#include "ScoreManager.h"
#include "UINew.h"


void UUINew::SetScoreValue(float score)
{
	UE_LOG(LogTemp, Warning, TEXT("Hello set score is %f"),score);
	//ScoreValue->SetText(FText::AsNumber(score));
	//ScoreValue->SetText(FText::FromString(FString::SanitizeFloat(score)));
	//ScoreValue= (UTextBlock*)this->GetWidgetFromName("ScoreValue");
	
	
	//ScoreValue->SetText(FText::FromString(FString::SanitizeFloat(score)));
	//ScoreValue->SetText(TEXT("Hello"));
	//ScoreValue->Text=FText::AsNumber(score2);
	//FText text= ScoreValue->GetText();

	if (ScoreValue) {
		UE_LOG(LogTemp, Warning, TEXT("Hello score value is not null"));
	}
		
	else
	{
		UE_LOG(LogTemp, Warning, TEXT("Hello score value is>> null"));
	}
}

void UUINew::NativeConstruct()
{
	Super::NativeConstruct();

	SetScoreValue(2);	
}


// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "MySaveGame.h"
#include "LevelManager.h"
#include "UINew.h"
#include "Components/TextBlock.h"
#include "Internationalization/Text.h"
#include "UserWidget.h"
#include "GameFramework/Actor.h"
#include "ScoreManager.generated.h"



UCLASS()
class ROLLABALL2_API AScoreManager : public AActor
{
	GENERATED_BODY()
	
public:	
	// Sets default values for this actor's properties
	AScoreManager();

protected:
	// Called when the game starts or when spawned
	virtual void BeginPlay() override;

public:	
	// Called every frame
	virtual void Tick(float DeltaTime) override;

	UFUNCTION(BlueprintPure, Category = "Score")
		float GetCurrentScore();

	UFUNCTION(BlueprintCallable, Category = "Score")
		void UpdateScore(float score);

	UPROPERTY(EditAnywhere, meta = (BindWidget))
		UUserWidget* Hud;	

	UPROPERTY(EditAnywhere)
		UUINew* UINew;

	UFUNCTION()
		void SaveData();

	UPROPERTY(EditAnywhere)
		ALevelManager* LevelManager;
	


private:

	UPROPERTY(EditAnywhere, Category = "Score")
		float Score;

};



// Fill out your copyright notice in the Description page of Project Settings.


#include "ScoreManager.h"
#include "Blueprint/UserWidget.h"
#include 

// Sets default values
AScoreManager::AScoreManager()
{
 	// Set this actor to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
	PrimaryActorTick.bCanEverTick = true;

}

// Called when the game starts or when spawned
void AScoreManager::BeginPlay()
{
	Super::BeginPlay();


    if (UMySaveGame* LoadedGame = Cast<UMySaveGame>(UGameplayStatics::LoadGameFromSlot(TEXT("PlayerScore"), 0)))
    {
        //    // The operation was successful, so LoadedGame now contains the data we saved earlier.
        Score = LoadedGame->PlayerScore;

       // UE_LOG(LogTemp, Warning, TEXT("Player Score is : %f"), Score);
        
        //Text = FText::FromString(FString::SanitizeFloat(Score));

        
       // ScoreValue = (UTextBlock*)Hud->gettext(TEXT("ScoreValue"));
        //ScoreValue = (UTextBlock*) Hud->GetWidgetFromName(TEXT("ScoreValue"));
        //ScoreValue->SetText(FText::FromString(FString::SanitizeFloat(Score)));

       
       // UINew->ScoreValue->SetText(FText::AsNumber(Score));
    }
    
    
    //UINew = Cast(GetWorld());
    UINew->SetScoreValue(Score);

    FTimerHandle UnusedHandle;
    GetWorld()->GetTimerManager().SetTimer(UnusedHandle, [this]() {
        UINew->SetScoreValue(Score);
        },2,1);

    

	//FOutputDeviceNull ar;
	//Hud->CallFunctionByNameWithArguments(TEXT("Get_ScoreValue_Text"), ar, NULL, false);
}

// Called every frame
void AScoreManager::Tick(float DeltaTime)
{
	Super::Tick(DeltaTime);    
}

float AScoreManager::GetCurrentScore()
{
	return Score;
}

void AScoreManager::UpdateScore(float score)
{
	Score += score;
	//UE_LOG(LogTemp, Warning, TEXT("Score is %f"), Score);

    
	FOutputDeviceNull ar;
	Hud->CallFunctionByNameWithArguments(TEXT("Get_ScoreValue_Text"),ar,NULL,false);

    //UINew->SetScoreValue(Score);
    LevelManager->CheckIsLevelComplete();
	SaveData();
}

void AScoreManager::SaveData()
{    
    if (UMySaveGame* SaveGameInstance = Cast<UMySaveGame>(UGameplayStatics::CreateSaveGameObject(UMySaveGame::StaticClass())))
    {
        SaveGameInstance->PlayerScore = Score;

        if (UGameplayStatics::SaveGameToSlot(SaveGameInstance, SaveGameInstance->SaveSlotName, SaveGameInstance->UserIndex))
        {
            //UE_LOG(LogTemp, Warning, TEXT("Data Saved"));
        }
    }
}

i want to access SetScoreValue() which is in uinew class. when i access it from scoremanager then i get scorevalue null which is a UTextBlock. and when i run SetScoreValue from NativeConstruct() of class uinew then it works so what should i do?

2

How do you create the instance of UINew in the score manager?