Advanced World Packets

Packets in com.hypixel.hytale.protocol.packets.world.

Sleep System

UpdateSleepState (180)

Bound: Clientbound

Updates the visual sleeping state of a player.

Field	Type	Notes
playerId	Int	Entity ID of the player.
sleeping	Boolean	True if asleep.
pos	Vector3d	Bed position.

SleepClock (181)

Bound: Clientbound

Syncs the time-skipping animation when all players sleep.

Field	Type	Notes
active	Boolean	Is the clock fast-forwarding?
rate	Float	Speed multiplier.

SleepMultiplayer (182)

Bound: Clientbound

Shows the "X/Y players sleeping" UI.

Field	Type	Notes
sleeping	Int	Count of sleepers.
required	Int	Count required to skip night.

Fluid Management

ServerSetFluid (145)

Bound: Clientbound

Updates a single fluid block (water/lava level).

Field	Type	Notes
x	Int	World X.
y	Int	World Y.
z	Int	World Z.
fluidId	Int	Fluid Registry ID.
level	Byte	Fluid height/level (0-15).

SetFluids (146)

Bound: Clientbound | Compressed: Yes

Bulk update for fluid blocks (similar to ServerSetBlocks).

Field	Type	Notes
nullBits	Byte	Bitmask.
chunkX	Int	Chunk X.
chunkZ	Int	Chunk Z.
updates	FluidChange[]	List of fluid updates.

Chunk Partial Updates

These packets update specific layers of a chunk without resending the entire geometry.

SetChunkHeightmap (133)

Bound: Clientbound | Compressed: Yes

Updates the heightmap (used for rain collision and map rendering).

Field	Type	Notes
chunkX	Int
chunkZ	Int
heightmap	Byte[]	Compressed height array.

SetChunkTintmap (134)

Bound: Clientbound | Compressed: Yes

Updates the biome color map (grass/foliage colors).

Field	Type	Notes
chunkX	Int
chunkZ	Int
colors	Int[]	Array of ARGB colors.

SetChunkEnvironments (135)

Bound: Clientbound | Compressed: Yes

Updates the biome registry IDs for a chunk (changing the biome type).

Field	Type	Notes
chunkX	Int
chunkZ	Int
biomes	Short[]	Array of Biome IDs.