SharedMap

A shared map layer for your server: everyone's exploration and public markers, synced through the server and saved next to the world. Your own map stays your own.

Markers

• Public marker: choose an icon and double-click the map. Everyone on the server sees it, tinted so you can tell it apart.
• Private marker: hold Left Ctrl while double-clicking. Only you see it, like vanilla.
• Cross out: left-click a marker to cross it out or undo the cross. Anyone can cross out a public marker.
• Delete: right-click a marker. A public marker can only be deleted by the account that placed it or by an admin (listed in adminlist.txt; the host of a listen server counts as admin). The server logs every deletion with the player, marker name, icon, biome, coordinates and owner.
• Duplicates: if a new public marker has the same icon and name as one within 20 m (configurable), the server removes the new one and keeps the original.

Personal map

• Shared exploration shows as lighter fog, the same shading vanilla uses for cartography-table data. It is never written into your own exploration.
• Hiding the shared map: untick the Shared map checkbox on the large map (or set ShowSharedMap = false). This hides shared exploration and public markers without changing your own exploration, private markers or cartography-table data.
• Saving: public markers are never saved to your character or written to a cartography table. Your client receives them from the server each time you join.

Crossplay / network

• Map data is sent in batches of compressed changes. The initial map goes out in bands of 64 rows. Nothing is sent pixel by pixel.
• Sending pauses whenever a connection's send queue is busy, so the map never delays world and gameplay data.
• There is no version enforcement. Players without the mod, including console players, can join and are never sent map data.

Install

• Server: required. It stores the map in <world>.txcsharedmap next to the world .db file, keeping the previous save as .txcsharedmap.old.
• Clients: every player who wants the shared map. The server and clients must run the same major version.

Config (BepInEx/config/txc.sharedmap.cfg)

Section	Key	Default
General	ShareExploration	true	Server setting.
General	SharePins	true	Server setting: allow public markers.
General	ForcePublicPosition	false	Server setting: forces vanilla "Visible on map" on for every player, including players without the mod. For modded players the checkbox is ticked and locked.
General	DuplicateRadius	20	Server setting: duplicate radius in metres. 0 = off.
Client	ShowSharedMap	true	Show shared exploration and public markers.
Client	PrivateMarkerKey	LeftControl	Hold this key while double-clicking to place a private marker.
Client	PublicMarkerColor	light gold	Tint of public marker icons.
Network	SendInterval	0.25	Seconds between send batches.
Network	MaxMessagesPerTick	4	Maximum messages per connection per batch.
Network	MaxSendQueueBytes	5120	Map sending pauses above this queue size. Vanilla world sync stops at 10240.

Notes

• Public markers are identified by icon and position, rounded to 0.5 m.
• Updating from 1.x: public copies previously saved to your character are replaced by the server's markers. Markers shared in 1.x have no recorded owner, so only admins can delete them.
• Sync is done by the clients, like the vanilla game, so a modified client could send fake data. Permissions are enforced by the server.