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COMMON: Move Common::RandomSource to common/random.*

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svn-id: r48279
This commit is contained in:
Max Horn 2010-03-18 15:07:11 +00:00
parent ef93d6921e
commit d78dba3bca
46 changed files with 194 additions and 86 deletions
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32
common/util.cpp
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@ -148,38 +148,6 @@ String tag2string(uint32 tag) {
#pragma mark -
RandomSource::RandomSource() {
// Use system time as RNG seed. Normally not a good idea, if you are using
// a RNG for security purposes, but good enough for our purposes.
assert(g_system);
uint32 seed = g_system->getMillis();
setSeed(seed);
}
void RandomSource::setSeed(uint32 seed) {
_randSeed = seed;
}
uint RandomSource::getRandomNumber(uint max) {
_randSeed = 0xDEADBF03 * (_randSeed + 1);
_randSeed = (_randSeed >> 13) | (_randSeed << 19);
return _randSeed % (max + 1);
}
uint RandomSource::getRandomBit() {
_randSeed = 0xDEADBF03 * (_randSeed + 1);
_randSeed = (_randSeed >> 13) | (_randSeed << 19);
return _randSeed & 1;
}
uint RandomSource::getRandomNumberRng(uint min, uint max) {
return getRandomNumber(max - min) + min;
}
#pragma mark -
const LanguageDescription g_languages[] = {
{"zh-cn", "Chinese (China)", ZH_CNA},
{"zh", "Chinese (Taiwan)", ZH_TWN},