Create Track Map: Fork²

A live web map of your Create train network, rebuilt for scale. Same map, dramatically faster on huge networks.

⚠️ This is a fork of a fork. It is not the original and not AyOhEe's unofficial fork. If your network is small, just use one of those.

Why this exists

Original CTM was built around full-state polling and a Leaflet SVG renderer. Both fall over past a few hundred track segments. This fork keeps the user-visible behaviour identical and rewrites everything underneath:

OpenLayers canvas renderer with incremental updates
Single SSE endpoint with delta updates instead of four full-state streams
Train motion interpolated client-side; server polls at 1 Hz instead of 2 Hz
Gzip on the wire, 3-decimal coords, server-side curve flattening
Per-edge caches and a topology short-circuit so static networks cost almost nothing per tick

Result on a stress test (3000 segments, 200 signals, 20 trains, 5 clients):

	upstream	this fork
Wire bytes/s	~6.4 MB/s	~3 KB/s
Browser ops/tick	~6000 DOM	~20 features

Compatibility

Minecraft	Loader	Create
1.21.1	NeoForge 21.1.x	≥ 6.0
1.20.1	Forge 47.1.x (also NeoForge 1.20.1)	≥ 6.0.6

Wire protocol break

The four *.rt SSE endpoints are replaced by /api/v2/stream. Legacy REST GETs still work. Third-party clients on the old streaming API need updating.

Credits

jenchanws — original Create Track Map
AyOhEe — unofficial fork that kept it alive across versions

This fork is by NexusRealms and not endorsed by either. Don't file issues with them about anything in this fork — report them on our discord