mirror of
https://github.com/vcmi/vcmi.git
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1ac328635a
- Re-organized CMapGenerator - Created CZone and CTemplate objects in the heap and used pointers - Added stub classes CZoneGraphGenerator and CZonePlacer (include warnings of unused variables, please ignore them) - Fixed CRandomGenerator bug that always the same number was produced - Better structure of Visual Studio project files with using filters - Updated project files (VS, CMake) - Excluded compiler warning mismatched-tags (false positive) - Fixed a bug when compiling with unit tests enabled
64 lines
1.5 KiB
C++
64 lines
1.5 KiB
C++
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/*
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* CRandomGenerator.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#pragma once
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typedef std::mt19937 TGenerator;
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typedef std::uniform_int_distribution<int> TIntDist;
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typedef std::uniform_real_distribution<double> TRealDist;
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typedef std::function<int()> TRandI;
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typedef std::function<double()> TRand;
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/// The random generator randomly generates integers and real numbers("doubles") between
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/// a given range. This is a header only class and mainly a wrapper for
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/// convenient usage of the standard random API.
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class CRandomGenerator
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{
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public:
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/// Seeds the generator with the current time by default.
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CRandomGenerator()
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{
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gen.seed(std::time(nullptr));
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}
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void seed(int value)
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{
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gen.seed(value);
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}
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/// Generate several integer numbers within the same range.
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/// e.g.: auto a = gen.getRangeI(0,10); a(); a(); a();
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TRandI getRangeI(int lower, int upper)
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{
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return boost::bind(TIntDist(lower, upper), boost::ref(gen));
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}
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int getInteger(int lower, int upper)
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{
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return getRangeI(lower, upper)();
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}
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/// Generate several double/real numbers within the same range.
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/// e.g.: auto a = gen.getRangeI(0,10); a(); a(); a();
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TRand getRange(double lower, double upper)
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{
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return boost::bind(TRealDist(lower, upper), boost::ref(gen));
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}
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double getDouble(double lower, double upper)
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{
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return getRange(lower, upper)();
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}
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private:
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TGenerator gen;
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};
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