random_func.cpp File Reference

Implementation of the pseudo random generator. More...

#include "../stdafx.h"
#include "random_func.hpp"
#include "bitmath_func.hpp"
#include "../debug.h"
#include "../safeguards.h"

Go to the source code of this file.

Functions
void	SetRandomSeed (uint32_t seed)
	(Re)set the state of the random number generators.
void	RandomBytesWithFallback (std::span< uint8_t > buf)
	Fill the given buffer with random bytes.

Variables
Randomizer	_random
	Random used in the game state calculations.
Randomizer	_interactive_random
	Random used everywhere else, where it does not (directly) influence the game state.

Detailed Description

Implementation of the pseudo random generator.

Definition in file random_func.cpp.

Function Documentation

RandomBytesWithFallback()

void RandomBytesWithFallback

(

std::span< uint8_t >

buf

)

Fill the given buffer with random bytes.

This function will attempt to use a cryptographically-strong random generator, but will fall back to a weaker random generator if none is available.

In the end, the buffer will always be filled with some form of random bytes when this function returns.

Parameters

buf	The buffer to fill with random bytes.

Definition at line 95 of file random_func.cpp.

References Debug.

Referenced by X25519SecretKey::CreateRandom(), X25519Nonce::CreateRandom(), GenerateUid(), and X25519AuthenticationHandler::SendResponse().

SetRandomSeed()

void SetRandomSeed

(

uint32_t

seed

)

(Re)set the state of the random number generators.

Parameters

seed	the new state

Definition at line 66 of file random_func.cpp.

References _interactive_random, _random, and Randomizer::SetSeed().

Referenced by StartupOneEngine().

Variable Documentation

_interactive_random

Randomizer _interactive_random

Random used everywhere else, where it does not (directly) influence the game state.

Definition at line 37 of file random_func.cpp.

Referenced by SelectCompanyManagerFaceWindow::OnClick(), RestoreRandomSeeds(), SaveRandomSeeds(), and SetRandomSeed().

_random

Randomizer _random

Random used in the game state calculations.

Definition at line 37 of file random_func.cpp.

Referenced by _GenerateWorld(), AfterLoadGame(), DoStartupNewCompany(), ClientNetworkGameSocketHandler::GameLoop(), GenerateTowns(), RestoreRandomSeeds(), SaveRandomSeeds(), and SetRandomSeed().