From aa19a3afb0b94e8b5fe055eeb38b1fb2ee1a67b0 Mon Sep 17 00:00:00 2001 From: Tiger Wang Date: Sun, 19 Oct 2014 14:10:18 +0100 Subject: Migrated random generators to std::random --- src/Chunk.cpp | 1 - src/ClientHandle.cpp | 12 - src/FastRandom.cpp | 116 +++++----- src/FastRandom.h | 36 ++- src/Generating/ChunkGenerator.cpp | 2 +- src/Globals.h | 1 + src/MersenneTwister.h | 456 -------------------------------------- src/Mobs/Monster.cpp | 1 - src/Mobs/Witch.cpp | 1 + src/Mobs/Witch.h | 1 - src/ProbabDistrib.cpp | 2 +- src/Root.cpp | 22 +- src/Root.h | 2 +- src/Server.cpp | 2 - src/World.cpp | 1 - src/World.h | 2 +- 16 files changed, 102 insertions(+), 556 deletions(-) delete mode 100644 src/MersenneTwister.h (limited to 'src') diff --git a/src/Chunk.cpp b/src/Chunk.cpp index d03e0bf21..959fbd18f 100644 --- a/src/Chunk.cpp +++ b/src/Chunk.cpp @@ -27,7 +27,6 @@ #include "Item.h" #include "Noise.h" #include "Root.h" -#include "MersenneTwister.h" #include "Entities/Player.h" #include "BlockArea.h" #include "Bindings/PluginManager.h" diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp index f15d845ef..7d0f2de06 100644 --- a/src/ClientHandle.cpp +++ b/src/ClientHandle.cpp @@ -25,8 +25,6 @@ #include "Root.h" #include "Protocol/Authenticator.h" -#include "MersenneTwister.h" - #include "Protocol/ProtocolRecognizer.h" #include "CompositeChat.h" #include "Items/ItemSword.h" @@ -45,16 +43,6 @@ -#define RECI_RAND_MAX (1.f/RAND_MAX) -inline int fRadRand(MTRand & r1, int a_BlockCoord) -{ - return a_BlockCoord * 32 + (int)(16 * ((float)r1.rand() * RECI_RAND_MAX) * 16 - 8); -} - - - - - int cClientHandle::s_ClientCount = 0; diff --git a/src/FastRandom.cpp b/src/FastRandom.cpp index 42bf5f3f9..cfafc7486 100644 --- a/src/FastRandom.cpp +++ b/src/FastRandom.cpp @@ -4,13 +4,15 @@ // Implements the cFastRandom class representing a fast random number generator #include "Globals.h" -#include #include "FastRandom.h" +//////////////////////////////////////////////////////////////////////////////// +// cFastRandom: + #if 0 && defined(_DEBUG) // Self-test // Both ints and floats are quick-tested to see if the random is calculated correctly, checking the range in ASSERTs, @@ -83,16 +85,8 @@ public: - -int cFastRandom::m_SeedCounter = 0; - - - - - cFastRandom::cFastRandom(void) : - m_Seed(m_SeedCounter++), - m_Counter(0) + m_LinearRand(static_cast(std::chrono::system_clock::now().time_since_epoch().count())) { } @@ -102,82 +96,96 @@ cFastRandom::cFastRandom(void) : int cFastRandom::NextInt(int a_Range) { - ASSERT(a_Range <= 1000000); // The random is not sufficiently linearly distributed with bigger ranges - ASSERT(a_Range > 0); - - // Make the m_Counter operations as minimal as possible, to emulate atomicity - int Counter = m_Counter++; - - // Use a_Range, m_Counter and m_Seed as inputs to the pseudorandom function: - int n = a_Range + Counter * 57 + m_Seed * 57 * 57; - n = (n << 13) ^ n; - n = ((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff); - return ((n / 11) % a_Range); + m_IntDistribution = std::uniform_int_distribution<>(0, a_Range - 1); + return m_IntDistribution(m_LinearRand); } + int cFastRandom::NextInt(int a_Range, int a_Salt) { - ASSERT(a_Range <= 1000000); // The random is not sufficiently linearly distributed with bigger ranges - ASSERT(a_Range > 0); - - // Make the m_Counter operations as minimal as possible, to emulate atomicity - int Counter = m_Counter++; - - // Use a_Range, a_Salt, m_Counter and m_Seed as inputs to the pseudorandom function: - int n = a_Range + Counter * 57 + m_Seed * 57 * 57 + a_Salt * 57 * 57 * 57; - n = (n << 13) ^ n; - n = ((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff); - return ((n / 11) % a_Range); + m_LinearRand.seed(a_Salt); + m_IntDistribution = std::uniform_int_distribution<>(0, a_Range - 1); + return m_IntDistribution(m_LinearRand); } + float cFastRandom::NextFloat(float a_Range) { - // Make the m_Counter operations as minimal as possible, to emulate atomicity - int Counter = m_Counter++; - - // Use a_Range, a_Salt, m_Counter and m_Seed as inputs to the pseudorandom function: - int n = (int)a_Range + Counter * 57 + m_Seed * 57 * 57; - n = (n << 13) ^ n; - n = ((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff); - - // Convert the integer into float with the specified range: - return (((float)n / (float)0x7fffffff) * a_Range); + m_FloatDistribution = std::uniform_real_distribution(0, a_Range - 1); + return m_FloatDistribution(m_LinearRand); } + float cFastRandom::NextFloat(float a_Range, int a_Salt) { - // Make the m_Counter operations as minimal as possible, to emulate atomicity - int Counter = m_Counter++; - - // Use a_Range, a_Salt, m_Counter and m_Seed as inputs to the pseudorandom function: - int n = (int)a_Range + Counter * 57 + m_Seed * 57 * 57 + a_Salt * 57 * 57 * 57; - n = (n << 13) ^ n; - n = ((n * (n * n * 15731 + 789221) + 1376312589) & 0x7fffffff); - - // Convert the integer into float with the specified range: - return (((float)n / (float)0x7fffffff) * a_Range); + m_LinearRand.seed(a_Salt); + m_FloatDistribution = std::uniform_real_distribution(0, a_Range - 1); + return m_FloatDistribution(m_LinearRand); } + int cFastRandom::GenerateRandomInteger(int a_Begin, int a_End) { - cFastRandom Random; - return Random.NextInt(a_End - a_Begin + 1) + a_Begin; + m_IntDistribution = std::uniform_int_distribution<>(a_Begin, a_End - 1); + return m_IntDistribution(m_LinearRand); +} + + + + + +//////////////////////////////////////////////////////////////////////////////// +// MTRand: + +MTRand::MTRand() : + m_MersenneRand(static_cast(std::chrono::system_clock::now().time_since_epoch().count())) +{ +} + + + + + +int MTRand::randInt(int a_Range) +{ + m_IntDistribution = std::uniform_int_distribution<>(0, a_Range); + return m_IntDistribution(m_MersenneRand); +} + + + + + +int MTRand::randInt() +{ + m_IntDistribution = std::uniform_int_distribution<>(0, std::numeric_limits::max()); + return m_IntDistribution(m_MersenneRand); +} + + + + + +double MTRand::rand(double a_Range) +{ + m_DoubleDistribution = std::uniform_real_distribution<>(0, a_Range); + return m_DoubleDistribution(m_MersenneRand); } diff --git a/src/FastRandom.h b/src/FastRandom.h index cebebad96..37d7f6eef 100644 --- a/src/FastRandom.h +++ b/src/FastRandom.h @@ -22,6 +22,7 @@ salts, the values they get will be different. #pragma once +#include @@ -30,6 +31,7 @@ salts, the values they get will be different. class cFastRandom { public: + cFastRandom(void); /// Returns a random int in the range [0 .. a_Range - 1]; a_Range must be less than 1M @@ -49,15 +51,33 @@ public: /** Returns a random int in the range [a_Begin .. a_End] */ int GenerateRandomInteger(int a_Begin, int a_End); - -protected: - int m_Seed; - int m_Counter; - - /// Counter that is used to initialize the seed, incremented for each object created - static int m_SeedCounter; -} ; +private: + + std::minstd_rand m_LinearRand; + std::uniform_int_distribution<> m_IntDistribution; + std::uniform_real_distribution m_FloatDistribution; +}; + + + + + +class MTRand +{ +public: + + MTRand(void); + + int randInt(int a_Range); + + int randInt(void); + double rand(double a_Range); +private: + std::mt19937 m_MersenneRand; + std::uniform_int_distribution<> m_IntDistribution; + std::uniform_real_distribution<> m_DoubleDistribution; +}; \ No newline at end of file diff --git a/src/Generating/ChunkGenerator.cpp b/src/Generating/ChunkGenerator.cpp index d615456c1..20b6b7066 100644 --- a/src/Generating/ChunkGenerator.cpp +++ b/src/Generating/ChunkGenerator.cpp @@ -6,7 +6,7 @@ #include "ChunkDesc.h" #include "ComposableGenerator.h" #include "Noise3DGenerator.h" -#include "../MersenneTwister.h" +#include "FastRandom.h" diff --git a/src/Globals.h b/src/Globals.h index f6c722594..6e6bb9c92 100644 --- a/src/Globals.h +++ b/src/Globals.h @@ -240,6 +240,7 @@ template class SizeChecker; // STL stuff: #include +#include #include #include #include diff --git a/src/MersenneTwister.h b/src/MersenneTwister.h deleted file mode 100644 index 759b8a1ae..000000000 --- a/src/MersenneTwister.h +++ /dev/null @@ -1,456 +0,0 @@ -// MersenneTwister.h -// Mersenne Twister random number generator -- a C++ class MTRand -// Based on code by Makoto Matsumoto, Takuji Nishimura, and Shawn Cokus -// Richard J. Wagner v1.1 28 September 2009 wagnerr@umich.edu - -// The Mersenne Twister is an algorithm for generating random numbers. It -// was designed with consideration of the flaws in various other generators. -// The period, 2^19937-1, and the order of equidistribution, 623 dimensions, -// are far greater. The generator is also fast; it avoids multiplication and -// division, and it benefits from caches and pipelines. For more information -// see the inventors' web page at -// http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/emt.html - -// Reference -// M. Matsumoto and T. Nishimura, "Mersenne Twister: A 623-Dimensionally -// Equidistributed Uniform Pseudo-Random Number Generator", ACM Transactions on -// Modeling and Computer Simulation, Vol. 8, No. 1, January 1998, pp 3-30. - -// Copyright (C) 1997 - 2002, Makoto Matsumoto and Takuji Nishimura, -// Copyright (C) 2000 - 2009, Richard J. Wagner -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions -// are met: -// -// 1. Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// -// 2. Redistributions in binary form must reproduce the above copyright -// notice, this list of conditions and the following disclaimer in the -// documentation and/or other materials provided with the distribution. -// -// 3. The names of its contributors may not be used to endorse or promote -// products derived from this software without specific prior written -// permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE -// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE -// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR -// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF -// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS -// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN -// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) -// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -// POSSIBILITY OF SUCH DAMAGE. - -#ifndef MERSENNETWISTER_H -#define MERSENNETWISTER_H - -// Not thread safe (unless auto-initialization is avoided and each thread has -// its own MTRand object) - -#include -#include -#include -#include -#include - -class MTRand { -// Data -public: - typedef UInt32 uint32; // unsigned integer type, at least 32 bits - - enum { N = 624 }; // length of state vector - enum { SAVE = N + 1 }; // length of array for save() - -protected: - enum { M = 397 }; // period parameter - - uint32 state[N]; // internal state - uint32 *pNext; // next value to get from state - uint32 left; // number of values left before reload needed - -// Methods -public: - MTRand( const uint32 oneSeed ); // initialize with a simple uint32 - MTRand( uint32 *const bigSeed, uint32 const seedLength = N ); // or array - MTRand(); // auto-initialize with /dev/urandom or time() and clock() - MTRand( const MTRand& o ); // copy - - // Do NOT use for CRYPTOGRAPHY without securely hashing several returned - // values together, otherwise the generator state can be learned after - // reading 624 consecutive values. - - // Access to 32-bit random numbers - uint32 randInt(); // integer in [0,2^32-1] - uint32 randInt( const uint32 n ); // integer in [0,n] for n < 2^32 - double rand(); // real number in [0,1] - double rand( const double n ); // real number in [0,n] - double randExc(); // real number in [0,1) - double randExc( const double n ); // real number in [0,n) - double randDblExc(); // real number in (0,1) - double randDblExc( const double n ); // real number in (0,n) - double operator()(); // same as rand() - - // Access to 53-bit random numbers (capacity of IEEE double precision) - double rand53(); // real number in [0,1) - - // Access to nonuniform random number distributions - double randNorm( const double mean = 0.0, const double stddev = 1.0 ); - - // Re-seeding functions with same behavior as initializers - void seed( const uint32 oneSeed ); - void seed( uint32 *const bigSeed, const uint32 seedLength = N ); - void seed(); - - // Saving and loading generator state - void save( uint32* saveArray ) const; // to array of size SAVE - void load( uint32 *const loadArray ); // from such array - friend std::ostream& operator<<( std::ostream& os, const MTRand& mtrand ); - friend std::istream& operator>>( std::istream& is, MTRand& mtrand ); - MTRand& operator=( const MTRand& o ); - -protected: - void initialize( const uint32 oneSeed ); - void reload(); - uint32 hiBit( const uint32 u ) const { return u & 0x80000000UL; } - uint32 loBit( const uint32 u ) const { return u & 0x00000001UL; } - uint32 loBits( const uint32 u ) const { return u & 0x7fffffffUL; } - uint32 mixBits( const uint32 u, const uint32 v ) const - { return hiBit(u) | loBits(v); } - uint32 magic( const uint32 u ) const - { return loBit(u) ? 0x9908b0dfUL : 0x0UL; } - uint32 twist( const uint32 m, const uint32 s0, const uint32 s1 ) const - { return m ^ (mixBits(s0,s1)>>1) ^ magic(s1); } - static uint32 hash( time_t t, clock_t c ); -}; - -// Functions are defined in order of usage to assist inlining - -inline MTRand::uint32 MTRand::hash( time_t t, clock_t c ) -{ - // Get a uint32 from t and c - // Better than uint32(x) in case x is floating point in [0,1] - // Based on code by Lawrence Kirby (fred@genesis.demon.co.uk) - - static uint32 differ = 0; // guarantee time-based seeds will change - - uint32 h1 = 0; - unsigned char *p = (unsigned char *) &t; - for( size_t i = 0; i < sizeof(t); ++i ) - { - h1 *= UCHAR_MAX + 2U; - h1 += p[i]; - } - uint32 h2 = 0; - p = (unsigned char *) &c; - for( size_t j = 0; j < sizeof(c); ++j ) - { - h2 *= UCHAR_MAX + 2U; - h2 += p[j]; - } - return ( h1 + differ++ ) ^ h2; -} - -inline void MTRand::initialize( const uint32 seed ) -{ - // Initialize generator state with seed - // See Knuth TAOCP Vol 2, 3rd Ed, p.106 for multiplier. - // In previous versions, most significant bits (MSBs) of the seed affect - // only MSBs of the state array. Modified 9 Jan 2002 by Makoto Matsumoto. - uint32 *s = state; - uint32 *r = state; - uint32 i = 1; - *s++ = seed & 0xffffffffUL; - for( ; i < N; ++i ) - { - *s++ = ( 1812433253UL * ( *r ^ (*r >> 30) ) + i ) & 0xffffffffUL; - r++; - } -} - -inline void MTRand::reload() -{ - // Generate N new values in state - // Made clearer and faster by Matthew Bellew (matthew.bellew@home.com) - static const int MmN = int(M) - int(N); // in case enums are unsigned - uint32 *p = state; - int i; - for( i = N - M; i--; ++p ) - *p = twist( p[M], p[0], p[1] ); - for( i = M; --i; ++p ) - *p = twist( p[MmN], p[0], p[1] ); - *p = twist( p[MmN], p[0], state[0] ); - - left = N, pNext = state; -} - -inline void MTRand::seed( const uint32 oneSeed ) -{ - // Seed the generator with a simple uint32 - initialize(oneSeed); - reload(); -} - -inline void MTRand::seed( uint32 *const bigSeed, const uint32 seedLength ) -{ - // Seed the generator with an array of uint32's - // There are 2^19937-1 possible initial states. This function allows - // all of those to be accessed by providing at least 19937 bits (with a - // default seed length of N = 624 uint32's). Any bits above the lower 32 - // in each element are discarded. - // Just call seed() if you want to get array from /dev/urandom - initialize(19650218UL); - uint32 i = 1; - uint32 j = 0; - uint32 k = ( (uint32)N > seedLength ? (uint32)N : seedLength ); - for( ; k; --k ) - { - state[i] = - state[i] ^ ( (state[i-1] ^ (state[i-1] >> 30)) * 1664525UL ); - state[i] += ( bigSeed[j] & 0xffffffffUL ) + j; - state[i] &= 0xffffffffUL; - ++i; ++j; - if( i >= N ) { state[0] = state[N-1]; i = 1; } - if( j >= seedLength ) j = 0; - } - for( k = N - 1; k; --k ) - { - state[i] = - state[i] ^ ( (state[i-1] ^ (state[i-1] >> 30)) * 1566083941UL ); - state[i] -= i; - state[i] &= 0xffffffffUL; - ++i; - if( i >= N ) { state[0] = state[N-1]; i = 1; } - } - state[0] = 0x80000000UL; // MSB is 1, assuring non-zero initial array - reload(); -} - -inline void MTRand::seed() -{ - // Seed the generator with an array from /dev/urandom if available - // Otherwise use a hash of time() and clock() values - - // First try getting an array from /dev/urandom - - /* // Commented out by FakeTruth because doing this 200 times a tick is SUUUUPEERRR SLOW!!~~!\D5Ne - FILE* urandom = fopen( "/dev/urandom", "rb" ); - if( urandom ) - { - uint32 bigSeed[N]; - register uint32 *s = bigSeed; - register int i = N; - register bool success = true; - while( success && i-- ) - success = fread( s++, sizeof(uint32), 1, urandom ); - fclose(urandom); - if( success ) { seed( bigSeed, N ); return; } - } - */ - - // Was not successful, so use time() and clock() instead - seed( hash( time(NULL), clock() ) ); -} - -inline MTRand::MTRand( const uint32 oneSeed ) - { seed(oneSeed); } - -inline MTRand::MTRand( uint32 *const bigSeed, const uint32 seedLength ) - { seed(bigSeed,seedLength); } - -inline MTRand::MTRand() - { seed(); } - -inline MTRand::MTRand( const MTRand& o ) -{ - const uint32 *t = o.state; - uint32 *s = state; - int i = N; - for( ; i--; *s++ = *t++ ) {} - left = o.left; - pNext = &state[N-left]; -} - -inline MTRand::uint32 MTRand::randInt() -{ - // Pull a 32-bit integer from the generator state - // Every other access function simply transforms the numbers extracted here - - if( left == 0 ) reload(); - --left; - - uint32 s1; - s1 = *pNext++; - s1 ^= (s1 >> 11); - s1 ^= (s1 << 7) & 0x9d2c5680UL; - s1 ^= (s1 << 15) & 0xefc60000UL; - return ( s1 ^ (s1 >> 18) ); -} - -inline MTRand::uint32 MTRand::randInt( const uint32 n ) -{ - // Find which bits are used in n - // Optimized by Magnus Jonsson (magnus@smartelectronix.com) - uint32 used = n; - used |= used >> 1; - used |= used >> 2; - used |= used >> 4; - used |= used >> 8; - used |= used >> 16; - - // Draw numbers until one is found in [0,n] - uint32 i; - do - i = randInt() & used; // toss unused bits to shorten search - while( i > n ); - return i; -} - -inline double MTRand::rand() - { return double(randInt()) * (1.0/4294967295.0); } - -inline double MTRand::rand( const double n ) - { return rand() * n; } - -inline double MTRand::randExc() - { return double(randInt()) * (1.0/4294967296.0); } - -inline double MTRand::randExc( const double n ) - { return randExc() * n; } - -inline double MTRand::randDblExc() - { return ( double(randInt()) + 0.5 ) * (1.0/4294967296.0); } - -inline double MTRand::randDblExc( const double n ) - { return randDblExc() * n; } - -inline double MTRand::rand53() -{ - uint32 a = randInt() >> 5, b = randInt() >> 6; - return ( a * 67108864.0 + b ) * (1.0/9007199254740992.0); // by Isaku Wada -} - -inline double MTRand::randNorm( const double mean, const double stddev ) -{ - // Return a real number from a normal (Gaussian) distribution with given - // mean and standard deviation by polar form of Box-Muller transformation - double x, y, r; - do - { - x = 2.0 * rand() - 1.0; - y = 2.0 * rand() - 1.0; - r = x * x + y * y; - } - while ( r >= 1.0 || r == 0.0 ); - double s = sqrt( -2.0 * log(r) / r ); - return mean + x * s * stddev; -} - -inline double MTRand::operator()() -{ - return rand(); -} - -inline void MTRand::save( uint32* saveArray ) const -{ - const uint32 *s = state; - uint32 *sa = saveArray; - int i = N; - for( ; i--; *sa++ = *s++ ) {} - *sa = left; -} - -inline void MTRand::load( uint32 *const loadArray ) -{ - uint32 *s = state; - uint32 *la = loadArray; - int i = N; - for( ; i--; *s++ = *la++ ) {} - left = *la; - pNext = &state[N-left]; -} - -inline std::ostream& operator<<( std::ostream& os, const MTRand& mtrand ) -{ - const MTRand::uint32 *s = mtrand.state; - int i = mtrand.N; - for( ; i--; os << *s++ << "\t" ) {} - return os << mtrand.left; -} - -inline std::istream& operator>>( std::istream& is, MTRand& mtrand ) -{ - MTRand::uint32 *s = mtrand.state; - int i = mtrand.N; - for( ; i--; is >> *s++ ) {} - is >> mtrand.left; - mtrand.pNext = &mtrand.state[mtrand.N-mtrand.left]; - return is; -} - -inline MTRand& MTRand::operator=( const MTRand& o ) -{ - if( this == &o ) return (*this); - const uint32 *t = o.state; - uint32 *s = state; - int i = N; - for( ; i--; *s++ = *t++ ) {} - left = o.left; - pNext = &state[N-left]; - return (*this); -} - -#endif // MERSENNETWISTER_H - -// Change log: -// -// v0.1 - First release on 15 May 2000 -// - Based on code by Makoto Matsumoto, Takuji Nishimura, and Shawn Cokus -// - Translated from C to C++ -// - Made completely ANSI compliant -// - Designed convenient interface for initialization, seeding, and -// obtaining numbers in default or user-defined ranges -// - Added automatic seeding from /dev/urandom or time() and clock() -// - Provided functions for saving and loading generator state -// -// v0.2 - Fixed bug which reloaded generator one step too late -// -// v0.3 - Switched to clearer, faster reload() code from Matthew Bellew -// -// v0.4 - Removed trailing newline in saved generator format to be consistent -// with output format of built-in types -// -// v0.5 - Improved portability by replacing static const int's with enum's and -// clarifying return values in seed(); suggested by Eric Heimburg -// - Removed MAXINT constant; use 0xffffffffUL instead -// -// v0.6 - Eliminated seed overflow when uint32 is larger than 32 bits -// - Changed integer [0,n] generator to give better uniformity -// -// v0.7 - Fixed operator precedence ambiguity in reload() -// - Added access for real numbers in (0,1) and (0,n) -// -// v0.8 - Included time.h header to properly support time_t and clock_t -// -// v1.0 - Revised seeding to match 26 Jan 2002 update of Nishimura and Matsumoto -// - Allowed for seeding with arrays of any length -// - Added access for real numbers in [0,1) with 53-bit resolution -// - Added access for real numbers from normal (Gaussian) distributions -// - Increased overall speed by optimizing twist() -// - Doubled speed of integer [0,n] generation -// - Fixed out-of-range number generation on 64-bit machines -// - Improved portability by substituting literal constants for long enum's -// - Changed license from GNU LGPL to BSD -// -// v1.1 - Corrected parameter label in randNorm from "variance" to "stddev" -// - Changed randNorm algorithm from basic to polar form for efficiency -// - Updated includes from deprecated to standard forms -// - Cleaned declarations and definitions to please Intel compiler -// - Revised twist() operator to work on ones'-complement machines -// - Fixed reload() function to work when N and M are unsigned -// - Added copy constructor and copy operator from Salvador Espana diff --git a/src/Mobs/Monster.cpp b/src/Mobs/Monster.cpp index 73dbcb3c3..34dd08f37 100644 --- a/src/Mobs/Monster.cpp +++ b/src/Mobs/Monster.cpp @@ -9,7 +9,6 @@ #include "../Entities/Player.h" #include "../Entities/ExpOrb.h" #include "../MonsterConfig.h" -#include "../MersenneTwister.h" #include "../Chunk.h" #include "../FastRandom.h" diff --git a/src/Mobs/Witch.cpp b/src/Mobs/Witch.cpp index 6956f7b7a..947be0011 100644 --- a/src/Mobs/Witch.cpp +++ b/src/Mobs/Witch.cpp @@ -2,6 +2,7 @@ #include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules #include "Witch.h" +#include "FastRandom.h" diff --git a/src/Mobs/Witch.h b/src/Mobs/Witch.h index bd059f61d..85d3e1447 100644 --- a/src/Mobs/Witch.h +++ b/src/Mobs/Witch.h @@ -2,7 +2,6 @@ #pragma once #include "AggressiveMonster.h" -#include "../MersenneTwister.h" diff --git a/src/ProbabDistrib.cpp b/src/ProbabDistrib.cpp index 7a5869dcc..c34c75982 100644 --- a/src/ProbabDistrib.cpp +++ b/src/ProbabDistrib.cpp @@ -5,7 +5,7 @@ #include "Globals.h" #include "ProbabDistrib.h" -#include "MersenneTwister.h" +#include "FastRandom.h" diff --git a/src/Root.cpp b/src/Root.cpp index 924ebcc1a..c8a268a78 100644 --- a/src/Root.cpp +++ b/src/Root.cpp @@ -68,24 +68,24 @@ cRoot::~cRoot() -void cRoot::InputThread(cRoot * a_Params) +void cRoot::InputThread(cRoot & a_Params) { cLogCommandOutputCallback Output; - while (!a_Params->m_bStop && !a_Params->m_bRestart && !m_TerminateEventRaised && std::cin.good()) + while (!a_Params.m_bStop && !a_Params.m_bRestart && !m_TerminateEventRaised && std::cin.good()) { AString Command; std::getline(std::cin, Command); if (!Command.empty()) { - a_Params->ExecuteConsoleCommand(TrimString(Command), Output); + a_Params.ExecuteConsoleCommand(TrimString(Command), Output); } } if (m_TerminateEventRaised || !std::cin.good()) { // We have come here because the std::cin has received an EOF / a terminate signal has been sent, and the server is still running; stop the server: - a_Params->m_bStop = true; + a_Params.m_bStop = true; } } @@ -191,7 +191,8 @@ void cRoot::Start(void) LOGD("Starting InputThread..."); try { - m_InputThread = std::thread(InputThread, this); + m_InputThread = std::thread(InputThread, std::ref(*this)); + m_InputThread.detach(); } catch (std::system_error & a_Exception) { @@ -217,17 +218,6 @@ void cRoot::Start(void) m_bStop = true; } - #if !defined(ANDROID_NDK) - try - { - m_InputThread.join(); - } - catch (std::system_error & a_Exception) - { - LOGERROR("ERROR: Could not wait for input thread to finish, error = %s!", a_Exception.code(), a_Exception.what()); - } - #endif - // Stop the server: m_WebAdmin->Stop(); LOG("Shutting down server..."); diff --git a/src/Root.h b/src/Root.h index 85800a4a8..c6bea4902 100644 --- a/src/Root.h +++ b/src/Root.h @@ -210,7 +210,7 @@ private: static cRoot* s_Root; - static void InputThread(cRoot * a_Params); + static void InputThread(cRoot & a_Params); }; // tolua_export diff --git a/src/Server.cpp b/src/Server.cpp index 8e5755a75..c5f4f9042 100644 --- a/src/Server.cpp +++ b/src/Server.cpp @@ -20,8 +20,6 @@ #include "Protocol/ProtocolRecognizer.h" #include "CommandOutput.h" -#include "MersenneTwister.h" - #include "inifile/iniFile.h" #include "Vector3.h" diff --git a/src/World.cpp b/src/World.cpp index 1f9361386..56f0d6ce5 100644 --- a/src/World.cpp +++ b/src/World.cpp @@ -45,7 +45,6 @@ #include "MobCensus.h" #include "MobSpawner.h" -#include "MersenneTwister.h" #include "Generating/Trees.h" #include "Bindings/PluginManager.h" #include "Blocks/BlockHandler.h" diff --git a/src/World.h b/src/World.h index bb43d7fba..338721553 100644 --- a/src/World.h +++ b/src/World.h @@ -10,7 +10,6 @@ #define MAX_PLAYERS 65535 #include "Simulator/SimulatorManager.h" -#include "MersenneTwister.h" #include "ChunkMap.h" #include "WorldStorage/WorldStorage.h" #include "Generating/ChunkGenerator.h" @@ -26,6 +25,7 @@ #include "MapManager.h" #include "Blocks/WorldInterface.h" #include "Blocks/BroadcastInterface.h" +#include "FastRandom.h" -- cgit v1.2.3