Module c_move_entity 

Packets for entity movement updates.

These packets use fixed-point encoding for position deltas. The client maintains a VecDeltaCodec for each entity which tracks the “base” position. Deltas are computed as encode(current) - encode(base) where encode multiplies by 4096 and rounds.

The server must track what the client’s base position is (PositionCodec) to compute correct deltas and know when the delta would overflow i16 bounds.

Structs

CMoveEntityPos

Updates an entity’s position with a delta from the position the client last acknowledged.

CMoveEntityPosRot

Updates an entity’s position and rotation.

CMoveEntityRot

Updates an entity’s rotation only.

DeltaStep

One leg of a stepped movement delta.

PackedEntityDelta

A fixed-point entity movement delta encoded as a protocol i16.

Enums

VecDelta

A movement delta relative to the position the client last acknowledged.

Constants

MAX_DELTA 🔒

Maximum delta value that fits in i16.

MIN_DELTA 🔒

Minimum delta value that fits in i16.

TRUNCATION_STEPS 🔒

Fixed-point encoding multiplier (1/4096 block precision).

Functions

calc_delta

Calculates the delta for entity movement.

encode_position

Encodes a position component to the protocol’s fixed-point format.

to_angle_byte

Converts degrees to a protocol angle byte (0-255 representing 0-360 degrees).