mirror of
https://github.com/VCMP-SqMod/SqMod.git
synced 2024-11-08 08:47:17 +01:00
382 lines
10 KiB
C++
382 lines
10 KiB
C++
// ------------------------------------------------------------------------------------------------
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#include "Library/Random.hpp"
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#include "Base/Shared.hpp"
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#include "Base/Buffer.hpp"
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// ------------------------------------------------------------------------------------------------
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#include <RandomLib/Random.hpp>
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// ------------------------------------------------------------------------------------------------
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#include <time.h>
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#include <stdlib.h>
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#ifdef SQMOD_OS_WINDOWS
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#include <process.h>
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#else
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#include <sys/types.h>
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#include <unistd.h>
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#endif
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// ------------------------------------------------------------------------------------------------
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RandomLib::Random g_RGen;
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// ------------------------------------------------------------------------------------------------
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namespace SqMod {
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// ------------------------------------------------------------------------------------------------
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SizeT GenerateSeed()
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{
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Ulong a = clock();
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Ulong b = time(NULL);
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#ifdef SQMOD_OS_WINDOWS
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Ulong c = _getpid();
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#else
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Ulong c = getpid();
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#endif
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// Mangle
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a=a-b; a=a-c; a=a^(c >> 13);
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b=b-c; b=b-a; b=b^(a << 8);
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c=c-a; c=c-b; c=c^(b >> 13);
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a=a-b; a=a-c; a=a^(c >> 12);
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b=b-c; b=b-a; b=b^(a << 16);
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c=c-a; c=c-b; c=c^(b >> 5);
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a=a-b; a=a-c; a=a^(c >> 3);
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b=b-c; b=b-a; b=b^(a << 10);
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c=c-a; c=c-b; c=c^(b >> 15);
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// Return result
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return c;
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}
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// ------------------------------------------------------------------------------------------------
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void ReseedRandom()
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{
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g_RGen.Reseed();
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}
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void ReseedRandom(Uint32 n)
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{
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g_RGen.Reseed(n);
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}
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// ------------------------------------------------------------------------------------------------
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Int8 GetRandomInt8()
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{
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return g_RGen.Integer< Int8 >();
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}
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Int8 GetRandomInt8(Int8 n)
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{
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return g_RGen.Integer< Int8 >(n);
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}
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Int8 GetRandomInt8(Int8 m, Int8 n)
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{
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return g_RGen.IntegerC< Int8 >(m, n);
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}
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// ------------------------------------------------------------------------------------------------
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Uint8 GetRandomUint8()
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{
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return g_RGen.Integer< Uint8 >();
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}
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Uint8 GetRandomUint8(Uint8 n)
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{
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return g_RGen.Integer< Uint8 >(n);
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}
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Uint8 GetRandomUint8(Uint8 m, Uint8 n)
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{
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return g_RGen.IntegerC< Uint8 >(m, n);
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}
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// ------------------------------------------------------------------------------------------------
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Int16 GetRandomInt16()
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{
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return g_RGen.Integer< Int16 >();
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}
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Int16 GetRandomInt16(Int16 n)
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{
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return g_RGen.Integer< Int16 >(n);
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}
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Int16 GetRandomInt16(Int16 m, Int16 n)
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{
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return g_RGen.IntegerC< Int16 >(m, n);
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}
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// ------------------------------------------------------------------------------------------------
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Uint16 GetRandomUint16()
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{
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return g_RGen.Integer< Uint16 >();
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}
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Uint16 GetRandomUint16(Uint16 n)
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{
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return g_RGen.Integer< Uint16 >(n);
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}
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Uint16 GetRandomUint16(Uint16 m, Uint16 n)
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{
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return g_RGen.IntegerC< Uint16 >(m, n);
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}
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// ------------------------------------------------------------------------------------------------
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Int32 GetRandomInt32()
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{
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return g_RGen.Integer< Int32 >();
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}
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Int32 GetRandomInt32(Int32 n)
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{
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return g_RGen.Integer< Int32 >(n);
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}
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Int32 GetRandomInt32(Int32 m, Int32 n)
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{
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return g_RGen.IntegerC< Int32 >(m, n);
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}
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// ------------------------------------------------------------------------------------------------
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Uint32 GetRandomUint32()
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{
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return g_RGen.Integer< Uint32 >();
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}
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Uint32 GetRandomUint32(Uint32 n)
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{
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return g_RGen.Integer< Uint32 >(n);
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}
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Uint32 GetRandomUint32(Uint32 m, Uint32 n)
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{
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return g_RGen.IntegerC< Uint32 >(m, n);
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}
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// ------------------------------------------------------------------------------------------------
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Int64 GetRandomInt64()
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{
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return g_RGen.Integer< Int64 >();
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}
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Int64 GetRandomInt64(Int64 n)
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{
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return g_RGen.Integer< Int64 >(n);
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}
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Int64 GetRandomInt64(Int64 m, Int64 n)
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{
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return g_RGen.IntegerC< Int64 >(m, n);
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}
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// ------------------------------------------------------------------------------------------------
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Uint64 GetRandomUint64()
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{
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return g_RGen.Integer< Uint64 >();
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}
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Uint64 GetRandomUint64(Uint64 n)
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{
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return g_RGen.Integer< Uint64 >(n);
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}
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Uint64 GetRandomUint64(Uint64 m, Uint64 n)
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{
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return g_RGen.IntegerC< Uint64 >(m, n);
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}
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// ------------------------------------------------------------------------------------------------
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Float32 GetRandomFloat32()
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{
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static const Float32 m = NumLimit<Int32>::Min, n = NumLimit<Int32>::Max;
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return (n - m) * (Float32(g_RGen.IntegerC< Int16 >(0, NumLimit< Int16 >::Max)) / Float32(RAND_MAX)) + m;
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}
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Float32 GetRandomFloat32(Float32 n)
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{
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return Float32(g_RGen.IntegerC< Int16 >(0, NumLimit< Int16 >::Max)) / Float32(RAND_MAX/n);
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}
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Float32 GetRandomFloat32(Float32 m, Float32 n)
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{
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return (n - m) * (Float32(g_RGen.IntegerC< Int16 >(0, NumLimit< Int16 >::Max)) / Float32(RAND_MAX)) + m;
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}
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// ------------------------------------------------------------------------------------------------
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Float64 GetRandomFloat64()
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{
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static const Float64 m = NumLimit<Int32>::Min, n = NumLimit<Int32>::Max;
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return (n - m) * (Float64(g_RGen.IntegerC< Int16 >(0, NumLimit< Int16 >::Max)) / Float64(RAND_MAX)) + m;
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}
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Float64 GetRandomFloat64(Float64 n)
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{
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return Float64(g_RGen.IntegerC< Int16 >(0, NumLimit< Int16 >::Max)) / Float64(RAND_MAX/n);
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}
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Float64 GetRandomFloat64(Float64 m, Float64 n)
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{
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return (n - m) * (Float64(g_RGen.IntegerC< Int16 >(0, NumLimit< Int16 >::Max)) / Float64(RAND_MAX)) + m;
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}
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// ------------------------------------------------------------------------------------------------
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void GetRandomString(String & str, String::size_type len)
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{
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str.reserve(len+1);
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str.resize(len);
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for (String::iterator itr = str.begin(); itr != str.end(); ++itr)
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{
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*itr = g_RGen.Integer< String::value_type >();
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}
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str.push_back(0);
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}
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void GetRandomString(String & str, String::size_type len, String::value_type n)
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{
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str.reserve(len+1);
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str.resize(len);
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for (String::iterator itr = str.begin(); itr != str.end(); ++itr)
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{
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*itr = g_RGen.Integer< String::value_type >(n);
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}
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str.push_back(0);
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}
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void GetRandomString(String & str, String::size_type len, String::value_type m, String::value_type n)
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{
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str.reserve(len+1);
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str.resize(len);
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for (String::iterator itr = str.begin(); itr != str.end(); ++itr)
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{
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*itr = g_RGen.IntegerC< String::value_type >(m, n);
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}
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str.push_back(0);
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}
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// ------------------------------------------------------------------------------------------------
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bool GetRandomBool()
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{
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return g_RGen.Boolean();
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}
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// ------------------------------------------------------------------------------------------------
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template < typename T > static T RandomValue()
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{
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return RandomVal< T >::Get();
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}
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template < typename T > static T RandomValue(T n)
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{
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return RandomVal< T >::Get(n);
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}
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template < typename T > static T RandomValue(T m, T n)
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{
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return RandomVal< T >::Get(m, n);
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}
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// ------------------------------------------------------------------------------------------------
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static CSStr RandomString(Int32 len)
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{
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if (len <= 0)
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{
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return _SC("");
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}
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Buffer b(len+1);
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SStr s = b.Get< SQChar >();
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for (Int32 n = 0; n <= len; ++n, ++s)
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{
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*s = g_RGen.Integer< SQChar >();
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}
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b.At< SQChar >(len) = 0;
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return b.Get< SQChar >();
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}
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// ------------------------------------------------------------------------------------------------
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static CSStr RandomString(Int32 len, SQChar n)
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{
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if (len <= 0)
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{
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return _SC("");
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}
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Buffer b(len+1);
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SStr s = b.Get< SQChar >();
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for (Int32 n = 0; n <= len; ++n, ++s)
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{
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*s = g_RGen.Integer< SQChar >(n);
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}
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b.At< SQChar >(len) = 0;
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return b.Get< SQChar >();
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}
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// ------------------------------------------------------------------------------------------------
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static CSStr RandomString(Int32 len, SQChar m, SQChar n)
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{
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if (len <= 0)
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{
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return _SC("");
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}
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Buffer b(len+1);
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SStr s = b.Get< SQChar >();
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for (Int32 n = 0; n <= len; ++n, ++s)
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{
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*s = g_RGen.IntegerC< SQChar >(m, n);
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}
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b.At< SQChar >(len) = 0;
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return b.Get< SQChar >();
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}
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// ------------------------------------------------------------------------------------------------
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static bool RandomProbI(SQInteger p)
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{
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return g_RGen.Prob(p);
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}
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static bool RandomProbI(SQInteger m, SQInteger n)
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{
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return g_RGen.Prob(m, n);
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}
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// ------------------------------------------------------------------------------------------------
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static bool RandomProbF(SQFloat p)
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{
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return g_RGen.Prob(p);
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}
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static bool RandomProbF(SQFloat m, SQFloat n)
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{
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return g_RGen.Prob(m, n);
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}
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// ------------------------------------------------------------------------------------------------
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void Register_Random(HSQUIRRELVM vm)
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{
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RootTable(vm).Bind(_SC("SqRand"), Table(vm)
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.Func(_SC("GenSeed"), &GenerateSeed)
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.Overload< void (*)(void) >(_SC("Reseed"), &ReseedRandom)
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.Overload< void (*)(Uint32) >(_SC("Reseed"), &ReseedRandom)
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.Overload< SQInteger (*)(void) >(_SC("Integer"), &RandomValue< SQInteger >)
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.Overload< SQInteger (*)(SQInteger) >(_SC("Integer"), &RandomValue< SQInteger >)
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.Overload< SQInteger (*)(SQInteger, SQInteger) >(_SC("Integer"), &RandomValue< SQInteger >)
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.Overload< SQFloat (*)(void) >(_SC("Float"), &RandomValue< SQFloat >)
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.Overload< SQFloat (*)(SQFloat) >(_SC("Float"), &RandomValue< SQFloat >)
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.Overload< SQFloat (*)(SQFloat, SQFloat) >(_SC("Float"), &RandomValue< SQFloat >)
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.Overload< CSStr (*)(Int32) >(_SC("String"), &RandomString)
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.Overload< CSStr (*)(Int32, SQChar) >(_SC("String"), &RandomString)
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.Overload< CSStr (*)(Int32, SQChar, SQChar) >(_SC("String"), &RandomString)
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.Func(_SC("Bool"), &GetRandomBool)
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.Overload< bool (*)(SQInteger) >(_SC("ProbI"), &RandomProbI)
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.Overload< bool (*)(SQInteger, SQInteger) >(_SC("ProbI"), &RandomProbI)
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.Overload< bool (*)(SQFloat) >(_SC("ProbF"), &RandomProbF)
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.Overload< bool (*)(SQFloat, SQFloat) >(_SC("ProbF"), &RandomProbF)
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);
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}
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} // Namespace:: SqMod
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