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Renamed love.math.g/setRandomState and rng:g/setState to love.math.g/setRandomSeed and rng:g/setSeed.

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getRandomSeed now always returns the previously set random seed instead of the current (implementation-dependent) random state.
This commit is contained in:
Alex Szpakowski
2013-12-01 21:25:27 -04:00
parent 6e82ca88ed
commit 1c8abc74aa
9 changed files with 68 additions and 65 deletions
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src/modules/math/RandomGenerator.cpp
+11 -8
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@@ -37,21 +37,24 @@ RandomGenerator::RandomGenerator()
// because it is too big for some compilers to handle ... if you know what
// i mean
#ifdef LOVE_BIG_ENDIAN
rng_state.b32.a = 0x0139408D;
rng_state.b32.b = 0xCBBF7A44;
seed.b32.a = 0x0139408D;
seed.b32.b = 0xCBBF7A44;
#else
rng_state.b32.b = 0x0139408D;
rng_state.b32.a = 0xCBBF7A44;
seed.b32.b = 0x0139408D;
seed.b32.a = 0xCBBF7A44;
#endif
rng_state = seed;
}
void RandomGenerator::setState(RandomGenerator::State state)
void RandomGenerator::setSeed(RandomGenerator::Seed newseed)
{
// 0 xor 0 is still 0, so Xorshift can't generate new numbers.
if (state.b64 == 0)
throw love::Exception("Invalid random state.");
if (newseed.b64 == 0)
throw love::Exception("Invalid random seed.");
rng_state = state;
seed = newseed;
rng_state = seed;
}
uint64 RandomGenerator::rand()