2f524481c1
git-svn-id: https://sfml.svn.sourceforge.net/svnroot/sfml/trunk@1002 4e206d99-4929-0410-ac5d-dfc041789085
131 lines
3.7 KiB
D
131 lines
3.7 KiB
D
/*
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* DSFML - SFML Library binding in D language.
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* Copyright (C) 2008 Julien Dagorn (sirjulio13@gmail.com)
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*
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* This software is provided 'as-is', without any express or
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* implied warranty. In no event will the authors be held
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* liable for any damages arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute
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* it freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented;
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* you must not claim that you wrote the original software.
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* If you use this software in a product, an acknowledgment
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* in the product documentation would be appreciated but
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* is not required.
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*
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* 2. Altered source versions must be plainly marked as such,
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* and must not be misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any
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* source distribution.
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*/
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module dsfml.system.randomizer;
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import dsfml.system.common;
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/**
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* Randomizer is an utility class for generating pseudo-random
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* numbers
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*
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* Examples:
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* -----------------------------------------------------------
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* int randI = Randomizer.Random(1, 100);
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* float randF = Randomizer.Random(1.0, 10.0)
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* -----------------------------------------------------------
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*/
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class Randomizer
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{
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/**
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* Set the seed for the generator. Using a known seed
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* allows you to reproduce the same sequence of random number
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*
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* Params:
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* seed = Number to use as the seed
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*
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*/
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static void setSeed(uint seed)
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{
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sfRandom_SetSeed(seed);
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}
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/**
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* Get the seed used to generate random numbers the generator.
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*
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* Returns:
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* Current seed
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*/
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static uint getSeed()
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{
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return sfRandom_GetSeed();
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}
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/**
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* Get a random float number in a given range
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*
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* Params:
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* begin = Start of the range
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* end = End of the range
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* Returns:
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* Random number in [Begin, End]
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*/
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static float random(float begin, float end)
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{
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return sfRandom_Float(begin, end);
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}
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/**
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* Get a random integral number in a given range
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*
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* Params:
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* begin = Start of the range
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* end = End of the range
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* Returns:
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* Random number in [Begin, End]
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*/
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static int random(int begin, int end)
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{
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return sfRandom_Int(begin, end);
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}
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private:
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/*
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* Prevent instanciation
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*/
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this()
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{
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}
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// External ====================================================================
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extern (C)
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{
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typedef void function(uint) pf_sfRandom_SetSeed;
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typedef uint function() pf_sfRandom_GetSeed;
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typedef float function(float, float) pf_sfRandom_Float;
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typedef int function(int, int) pf_sfRandom_Int;
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static pf_sfRandom_SetSeed sfRandom_SetSeed;
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static pf_sfRandom_GetSeed sfRandom_GetSeed;
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static pf_sfRandom_Float sfRandom_Float;
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static pf_sfRandom_Int sfRandom_Int;
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}
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static this()
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{
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DllLoader dll = DllLoader.load("csfml-system");
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sfRandom_SetSeed = cast(pf_sfRandom_SetSeed)dll.getSymbol("sfRandom_SetSeed");
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sfRandom_GetSeed = cast(pf_sfRandom_GetSeed)dll.getSymbol("sfRandom_GetSeed");
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sfRandom_Float = cast(pf_sfRandom_Float)dll.getSymbol("sfRandom_Float");
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sfRandom_Int = cast(pf_sfRandom_Int)dll.getSymbol("sfRandom_Int");
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}
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}
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