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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.h
+20 -19
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@@ -40,7 +40,7 @@ class RandomGenerator : public Object
{
public:
union State
union Seed
{
uint64 b64;
struct
@@ -54,42 +54,42 @@ public:
virtual ~RandomGenerator() {}
/**
* Set pseudo-random state.
* Set pseudo-random seed.
* It's up to the implementation how to use this.
**/
void setState(State state);
void setSeed(Seed seed);
/**
* Separately set the low and high parts of the pseudo-random state.
* Separately set the low and high bits of the pseudo-random seed.
**/
inline void setState(uint32 low, uint32 high)
inline void setSeed(uint32 low, uint32 high)
{
State newstate;
Seed newseed;
#ifdef LOVE_BIG_ENDIAN
newstate.b32.a = high;
newstate.b32.b = low;
newseed.b32.a = high;
newseed.b32.b = low;
#else
newstate.b32.b = high;
newstate.b32.a = low;
newseed.b32.b = high;
newseed.b32.a = low;
#endif
setState(newstate);
setSeed(newseed);
}
inline State getState() const
inline Seed getSeed() const
{
return rng_state;
return seed;
}
inline void getState(uint32 &low, uint32 &high) const
inline void getSeed(uint32 &low, uint32 &high) const
{
#ifdef LOVE_BIG_ENDIAN
high = rng_state.b32.a;
low = rng_state.b32.b;
high = seed.b32.a;
low = seed.b32.b;
#else
high = rng_state.b32.b;
low = rng_state.b32.a;
high = seed.b32.b;
low = seed.b32.a;
#endif
}
@@ -140,7 +140,8 @@ public:
private:
State rng_state;
Seed seed;
Seed rng_state;
double last_randomnormal;
}; // RandomGenerator