Package squidpony.squidmath

Interface StatefulRandomness

All Superinterfaces:
RandomnessSource, Serializable
All Known Subinterfaces:
IStatefulRNG
All Known Implementing Classes:
DeckRNG, DistributedRNG, DiverRNG, EditRNG, FlawedRandomness.AddRotate, FlawedRandomness.BigCounter, GWTRNG, Lathe32RNG, LFSR, LightRNG, LinnormRNG, MizuchiRNG, MoonwalkRNG, NLFSR, PermutedRNG, PintRNG, PulleyRNG, SilkRNG, Starfish32RNG, StatefulRNG, ThrustAltRNG, VanDerCorputQRNG
public interface StatefulRandomness
extends RandomnessSource
A simple interface for RandomnessSources that have the additional property of a state that can be re-set. Created by Tommy Ettinger on 9/15/2015.

  • Method Summary

    Modifier and Type Method Description
    RandomnessSource copy()
    Produces a copy of this StatefulRandomness that, if next() and/or nextLong() are called on this object and the copy, both will generate the same sequence of random numbers from the point copy() was called.
    long getState()
    Get the current internal state of the StatefulRandomness as a long.
    void setState​(long state)
    Set the current internal state of this StatefulRandomness with a long.

    Methods inherited from interface squidpony.squidmath.RandomnessSource

    next, nextLong

  • Method Details

    • getState

      long getState()
      Get the current internal state of the StatefulRandomness as a long.
      Returns:
      the current internal state of this object.

    • setState

      void setState​(long state)
      Set the current internal state of this StatefulRandomness with a long.
      Parameters:
      state - a 64-bit long. You should avoid passing 0, even though some implementations can handle that.

    • copy

      RandomnessSource copy()
      Produces a copy of this StatefulRandomness that, if next() and/or nextLong() are called on this object and the copy, both will generate the same sequence of random numbers from the point copy() was called. This just needs to copy the state so it isn't shared, usually, and produce a new value with the same exact state.
      Specified by:
      copy in interface RandomnessSource
      Returns:
      a copy of this StatefulRandomness