Movement

Move requests, acks, and mobile position updates.

Opcode	Name	Dir	Size	Description
0x02	Move Request	C → S	7 bytes (fixed)	One step or turn, with anti-fastwalk key.
0x20	Draw Game Player	S → C	19 bytes (fixed)	Positions and renders the player's own mobile.
0x21	Char Move Rejection	S → C	8 bytes (fixed)	Echoes the rejected sequence with the mover's true position, forcing a client snap-back.
0x22	Movement Ack	S → C	3 bytes (fixed)	Confirms the step with the client's sequence number.
0x77	Update Player	S → C	17 bytes (fixed)	Broadcasts another mobile's position/facing to nearby players.
0x78	Draw Object	S → C	Variable	Draws a mobile and its equipped items on the client.