Package net.minecraft.world.level.levelgen

Class WorldgenRandom

java.lang.Object

net.minecraft.world.level.levelgen.LegacyRandomSource

net.minecraft.world.level.levelgen.WorldgenRandom

All Implemented Interfaces:

RandomSource, BitRandomSource

public class WorldgenRandom
extends LegacyRandomSource

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	WorldgenRandom.Algorithm

Nested classes/interfaces inherited from class net.minecraft.world.level.levelgen.LegacyRandomSource

LegacyRandomSource.LegacyPositionalRandomFactory

Field Summary

Fields

Modifier and Type	Field	Description
private int	count
private final RandomSource	randomSource

Fields inherited from interface net.minecraft.world.level.levelgen.BitRandomSource

DOUBLE_MULTIPLIER, FLOAT_MULTIPLIER

Fields inherited from interface net.minecraft.util.RandomSource

GAUSSIAN_SPREAD_FACTOR

Constructor Summary

Constructors

Constructor	Description
WorldgenRandom(RandomSource pRandomSource)

Method Summary

Modifier and Type	Method	Description
RandomSource	fork()
PositionalRandomFactory	forkPositional()
int	getCount()
int	next(int pBits)
static RandomSource	seedSlimeChunk(int pChunkX, int pChunkZ, long pLevelSeed, long pSalt)	Creates a new RandomSource, seeded for determining whether a chunk is a slime chunk or not.
long	setDecorationSeed(long pLevelSeed, int pMinChunkBlockX, int pMinChunkBlockZ)	Seeds the current random for chunk decoration, including spawning mobs and for use in feature placement.
void	setFeatureSeed(long pDecorationSeed, int pIndex, int pDecorationStep)	Seeds the current random for placing features.
void	setLargeFeatureSeed(long pBaseSeed, int pChunkX, int pChunkZ)	Seeds the current random for placing large features such as caves, strongholds, and mineshafts.
void	setLargeFeatureWithSalt(long pLevelSeed, int pRegionX, int pRegionZ, int pSalt)	Seeds the current random for placing the starts of structure features.
void	setSeed(long pSeed)

Methods inherited from class net.minecraft.world.level.levelgen.LegacyRandomSource

nextGaussian

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface net.minecraft.world.level.levelgen.BitRandomSource

nextBoolean, nextDouble, nextFloat, nextInt, nextInt, nextLong

Methods inherited from interface net.minecraft.util.RandomSource

consumeCount, nextInt, nextIntBetweenInclusive, triangle

Field Details

randomSource

private final RandomSource randomSource

count

private int count

Constructor Details

WorldgenRandom

public WorldgenRandom(RandomSource pRandomSource)

Method Details

getCount

public int getCount()

fork

public RandomSource fork()

Specified by:

fork in interface RandomSource

Overrides:

fork in class LegacyRandomSource

forkPositional

public PositionalRandomFactory forkPositional()

Specified by:

forkPositional in interface RandomSource

Overrides:

forkPositional in class LegacyRandomSource

next

public int next(int pBits)

Specified by:

next in interface BitRandomSource

Overrides:

next in class LegacyRandomSource

setSeed

public void setSeed(long pSeed)

Specified by:

setSeed in interface RandomSource

Overrides:

setSeed in class LegacyRandomSource

setDecorationSeed

public long setDecorationSeed(long pLevelSeed,
 int pMinChunkBlockX,
 int pMinChunkBlockZ)

Seeds the current random for chunk decoration, including spawning mobs and for use in feature placement. The coordinates correspond to the minimum block position within a given chunk.

setFeatureSeed

public void setFeatureSeed(long pDecorationSeed,
 int pIndex,
 int pDecorationStep)

Seeds the current random for placing features. Each feature is seeded differently in order to seem more random. However, it does not do a good job of this, and issues can arise from the salt being small with features that have the same decoration step and are close together in the feature lists.

Parameters:

pDecorationSeed - The seed computed by setDecorationSeed(long, int, int)

pIndex - The cumulative index of the generating feature within the biome's list of features.

pDecorationStep - The ordinal of the GenerationStep.Decoration of the generating feature.

setLargeFeatureSeed

public void setLargeFeatureSeed(long pBaseSeed,
 int pChunkX,
 int pChunkZ)

Seeds the current random for placing large features such as caves, strongholds, and mineshafts.

Parameters:

pBaseSeed - This is passed in as the level seed, or in some cases such as carvers, as an offset from the level seed unique to each carver.

setLargeFeatureWithSalt

public void setLargeFeatureWithSalt(long pLevelSeed,
 int pRegionX,
 int pRegionZ,
 int pSalt)

Seeds the current random for placing the starts of structure features. The region coordinates are the region which the target chunk lies in. For example, witch hut regions are 32x32 chunks, so all chunks within that region would be seeded identically. The size of the regions themselves are determined by the spacing of the structure settings.

Parameters:

pSalt - A salt unique to each structure.

seedSlimeChunk

public static RandomSource seedSlimeChunk(int pChunkX,
 int pChunkZ,
 long pLevelSeed,
 long pSalt)

Creates a new RandomSource, seeded for determining whether a chunk is a slime chunk or not.

Parameters:

pSalt - For vanilla slimes, this is always 987234911L