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| author | Oliver Kiehl | 2002-12-01 14:57:50 +0000 |
|---|---|---|
| committer | Oliver Kiehl | 2002-12-01 14:57:50 +0000 |
| commit | 133f624cc530a210c82d38e6e5ecf2cd732011b7 (patch) | |
| tree | 94809a1086a54ed4929606a4d6e879806ea0d6b5 /common/util.cpp | |
| parent | 89eaf9b319299950872229e585dca30e2995772f (diff) | |
| download | scummvm-rg350-133f624cc530a210c82d38e6e5ecf2cd732011b7.tar.gz scummvm-rg350-133f624cc530a210c82d38e6e5ecf2cd732011b7.tar.bz2 scummvm-rg350-133f624cc530a210c82d38e6e5ecf2cd732011b7.zip | |
moved RNG to common/util.cpp
svn-id: r5778
Diffstat (limited to 'common/util.cpp')
| -rw-r--r-- | common/util.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/common/util.cpp b/common/util.cpp index cea9d3a8f0..2423cd0af0 100644 --- a/common/util.cpp +++ b/common/util.cpp @@ -157,3 +157,27 @@ int resStrLen(const char *src) } return num; } + +RandomSource::RandomSource(uint32 seed) +{ + _randSeed = seed; +} + +void RandomSource::setSeed(uint32 seed) +{ + _randSeed = seed; +} + +uint RandomSource::getRandomNumber(uint max) +{ + /* TODO: my own random number generator */ + _randSeed = 0xDEADBF03 * (_randSeed + 1); + _randSeed = (_randSeed >> 13) | (_randSeed << 19); + return _randSeed % (max + 1); +} + +uint RandomSource::getRandomNumberRng(uint min, uint max) +{ + return getRandomNumber(max - min) + min; +} + |