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Location: cpp/openttd-patchpack/source/src/core/random_func.cpp - annotation
r11049:6eb2c87ed64a
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(svn r15389) -Feature: Add ability to select which base graphics set is used from the Game Options window. The change takes effect when the window is closed. This option can only be used from the intro menu, as reloading graphics during a game may cause issues.
r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r9111:983de9c5a848 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r8113:7815c26d7612 r7935:d51ba3fb01a8 r8434:4d5d2dc41ce0 r8142:8414f11ec81b r8434:4d5d2dc41ce0 r7935:d51ba3fb01a8 r8434:4d5d2dc41ce0 r8434:4d5d2dc41ce0 r7935:d51ba3fb01a8 r8434:4d5d2dc41ce0 r8434:4d5d2dc41ce0 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r8434:4d5d2dc41ce0 r7935:d51ba3fb01a8 r8434:4d5d2dc41ce0 r8434:4d5d2dc41ce0 r8434:4d5d2dc41ce0 r8434:4d5d2dc41ce0 r8434:4d5d2dc41ce0 r8434:4d5d2dc41ce0 r8434:4d5d2dc41ce0 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r8434:4d5d2dc41ce0 r8434:4d5d2dc41ce0 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r10255:0578669dfff6 r10208:ef8fcc3dc4ca r8477:5efae99a3878 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r10506:87cc1a24853c r10506:87cc1a24853c r8434:4d5d2dc41ce0 r8434:4d5d2dc41ce0 r8477:5efae99a3878 r8434:4d5d2dc41ce0 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r7935:d51ba3fb01a8 r8792:db826506a415 | /* $Id$ */
/** @file random_func.cpp Implementation of the pseudo random generator. */
#include "../stdafx.h"
#include "random_func.hpp"
#include "bitmath_func.hpp"
Randomizer _random, _interactive_random;
uint32 Randomizer::Next()
{
const uint32 s = this->state[0];
const uint32 t = this->state[1];
this->state[0] = s + ROR(t ^ 0x1234567F, 7) + 1;
return this->state[1] = ROR(s, 3) - 1;
}
uint32 Randomizer::Next(uint16 max)
{
return GB(this->Next(), 0, 16) * max >> 16;
}
void Randomizer::SetSeed(uint32 seed)
{
this->state[0] = seed;
this->state[1] = seed;
}
void SetRandomSeed(uint32 seed)
{
_random.SetSeed(seed);
_interactive_random.SetSeed(seed * 0x1234567);
}
#ifdef RANDOM_DEBUG
#include "../network/network_internal.h"
#include "../company_func.h"
uint32 DoRandom(int line, const char *file)
{
if (_networking && (GetNetworkClientSocket(0)->status != STATUS_INACTIVE || !_network_server)) {
printf("Random [%d/%d] %s:%d\n", _frame_counter, (byte)_current_company, file, line);
}
return _random.Next();
}
uint DoRandomRange(uint max, int line, const char *file)
{
return GB(DoRandom(line, file), 0, 16) * max >> 16;
}
#endif /* RANDOM_DEBUG */
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