PCG_RNG.h

Go to the documentation of this file.

/* 
 * Copyright (c) 2026 Grzegorz Krug.
 * All Rights Reserved.
 */

 
#pragma once
 
 
#include "CoreMinimal.h"
 
 
#include "Components//ActorComponent.h"
 
 
#include "PCG_RNG.generated.h"
 

UCLASS(BlueprintType, Blueprintable, DefaultToInstanced)
class UPCG_RNG32 : public UObject {
    GENERATED_BODY()
 
 
public:
    virtual void GetLifetimeReplicatedProps( TArray<class FLifetimeProperty>& OutLifetimeProps ) const override;

    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    void InitBP( int64 StateIn, int64 StreamIn );

    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    int64 GetState() const;

    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    void SetState( int64 stateIn );

    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    void SetNoiseStream( int64 streamIn );

    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    double GetNextDouble();

    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    double GetCurrentDouble() const;

    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    int GetNextInt( int A, int B );

    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    int GetCurrentInt( int A, int B ) const;
 
 
protected:
    virtual uint32 CurrentNumber() const;
 
    uint32 NextNumber();
 
    UPROPERTY(Replicated, SaveGame)
    uint64 state = 0x853c49e6748fea9bULL;

    UPROPERTY(Replicated, SaveGame)
    uint64 stream = 0xda3e39cb94b95bdbULL; // must be odd
};
 

UCLASS(BlueprintType, Blueprintable, meta=(BlueprintSpawnableComponent), DefaultToInstanced)
class YASIUMATH_API UPCG32_RNGComponent : public UActorComponent {
    GENERATED_BODY()
 
 
public:
    UPCG32_RNGComponent();
 
    virtual void GetLifetimeReplicatedProps( TArray<class FLifetimeProperty>& OutLifetimeProps ) const override;
 
    UPROPERTY(BlueprintReadWrite, Replicated, Category="Yasiu|RNG")
    TObjectPtr<UPCG_RNG32> RNG;
 
    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    void InitBP( int64 State, int64 Noise );
 
    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    int64 GetState() const;
 
    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    void SetState( int64 State );
 
    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    void SetStreamNoise( int64 Noise );
 
    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG", BlueprintPure=false)
    int GetCurrentInt( int min, int max ) const;
 
    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    int GetNextInt( int min, int max );
 
    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG", BlueprintPure=false)
    double GetCurrentDouble() const;
 
    UFUNCTION(BlueprintCallable, Category="Yasiu|RNG")
    double GetNextDouble();
};