C++ Blueprint Function Library

functionLibrary.cpp

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


#include "GluttonBlueprintFunctionLibrary.h"

void UGluttonBlueprintFunctionLibrary::HelloSquirrel()
{
	UE_LOG(LogTemp, Warning, TEXT("Hello Squirrel"));
}

void UGluttonBlueprintFunctionLibrary::HelloSquirrelNTimes(int32 N)
{
	for (int32 i{ 0 }; i < N; i++) {
		UE_LOG(LogTemp, Warning, TEXT("Hello Squirrel! (%d)"), i);
	}
}

FString UGluttonBlueprintFunctionLibrary::FormatTextFromFloats(const FString& FormatString, const TArray<float>& Values)
{
	FString Result{ FormatString };
	
	for (int32 i{ 0 }; i < Values.Num(); i++) {
		FString Placeholder = FString::Printf(TEXT("{%d}"), i); // {0} {1} {2}...
		const FString ValueString = FString::SanitizeFloat(Values[i]);
		Result.ReplaceInline(*Placeholder, *ValueString);
	}
	
	return Result;
}

void UGluttonBlueprintFunctionLibrary::SortFloatArray(TArray<float>& Array) {
	Array.Sort();
}

functionLibrary.h

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

#pragma once

#include "CoreMinimal.h"
#include "Kismet/BlueprintFunctionLibrary.h"
#include "GluttonBlueprintFunctionLibrary.generated.h"

/**
 * 
 */
UCLASS()
class FROMBPTOCPP_API UGluttonBlueprintFunctionLibrary : public UBlueprintFunctionLibrary
{
	GENERATED_BODY()
	
	/** Prints "Hello Squirrel" to the output log. */
	UFUNCTION(BlueprintCallable, Category="Glutton|Log")
	static void HelloSquirrel();	

	/** 
	 * Prints "Hello Squirrel" to the output log N times.
	 * 
	 * @param N Specifies how many squirrels we want in our logs.
	 */
	UFUNCTION(BlueprintCallable, Category="Glutton|Log")
	static void HelloSquirrelNTimes(int32 N);

	/**
	 * Formats a string that includes {0}, {1}, {2} placeholders.
	 * Pulls the values for the placeholders from the input array at the indexed positions.
	 * 
	 * @param FormatString Our string with the placeholders.
	 * @param Values Our array of floats to insert into the string.
	 * @return The formated string with the placeholders replaced by the indexed floats.
	 */
	UFUNCTION(BlueprintCallable, Category="Glutton|Utils")
	static FString FormatTextFromFloats(const FString& FormatString, const TArray<float>& Values);
	
	UFUNCTION(BlueprintCallable, Category="Glutton|Array")
	static void SortFloatArray(UPARAM(ref) TArray<float>& Array);
};