mirror of
https://github.com/OpenTTD/OpenTTD.git
synced 2025-07-16 17:15:05 +01:00
4fada121bd
- Change: Log the _date and _date_fract in the desync log for saved games (r19638) - Fix: Do not allow building cacti outside of the desert or rain forest trees outside of the rain forest area. This to prevent people from thinking planting rain forest trees makes the rain forest bigger and thus adds more place to build a lumber mill [FS#3728] (r19644, r19635, r19634) - Fix: Industry generation failed for large maps and lots of industry types (r19643) - Fix: Desync when taking over companies (r19636) - Fix: Chat message caused glitch when rejoining a network game [FS#3757] (r19629)
64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file random_func.cpp Implementation of the pseudo random generator. */
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#include "../stdafx.h"
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#include "random_func.hpp"
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#include "bitmath_func.hpp"
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Randomizer _random, _interactive_random;
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uint32 Randomizer::Next()
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{
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const uint32 s = this->state[0];
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const uint32 t = this->state[1];
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this->state[0] = s + ROR(t ^ 0x1234567F, 7) + 1;
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return this->state[1] = ROR(s, 3) - 1;
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}
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uint32 Randomizer::Next(uint16 max)
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{
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return GB(this->Next(), 0, 16) * max >> 16;
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}
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void Randomizer::SetSeed(uint32 seed)
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{
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this->state[0] = seed;
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this->state[1] = seed;
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}
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void SetRandomSeed(uint32 seed)
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{
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_random.SetSeed(seed);
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_interactive_random.SetSeed(seed * 0x1234567);
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}
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#ifdef RANDOM_DEBUG
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#include "../network/network.h"
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#include "../network/network_internal.h"
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#include "../company_func.h"
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uint32 DoRandom(int line, const char *file)
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{
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if (_networking && (!_network_server || (NetworkClientSocket::IsValidID(0) && NetworkClientSocket::Get(0)->status != STATUS_INACTIVE))) {
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printf("Random [%d/%d] %s:%d\n", _frame_counter, (byte)_current_company, file, line);
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}
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return _random.Next();
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}
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uint DoRandomRange(uint max, int line, const char *file)
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{
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assert(max <= UINT16_MAX);
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return GB(DoRandom(line, file), 0, 16) * max >> 16;
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}
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#endif /* RANDOM_DEBUG */
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