squidpony.squidmath

Interface StatefulRandomness

All Superinterfaces:

RandomnessSource, java.io.Serializable

All Known Subinterfaces:

IStatefulRNG

All Known Implementing Classes:

DeckRNG, DistinctRNG, DistributedRNG, DiverRNG, EditRNG, FlawedRandomness.AddRotate, FlawedRandomness.BigCounter, GWTRNG, Lathe32RNG, LFSR, LightRNG, LinnormRNG, MizuchiRNG, MoonwalkRNG, NLFSR, PermutedRNG, PintRNG, PulleyRNG, SilkRNG, SpecifiedRandomness, 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 and 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 Detail

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