Create Track Map

A multi-loader mod that displays a track map of Create trains in your world, including all tracks, signals, stations, and trains. The signals and trains are updated in (practically) real time.

Usage

CTM is intended to be a server side mod, but can also run in single-player worlds and LAN servers. It runs a web server, on port 3876 by default, that provides the following API:

• /api/network, /api/network.rt: List of all track pieces and train stations
• /api/signals, /api/signals.rt: List of all train signals, including their states (green, yellow, red)
• /api/blocks, /api/blocks.rt: List of all signal control blocks, and whether they are occupied or reserved by a train
• /api/trains, /api/trains.rt: List of all assembled trains, including their names and positions
• /api/style.css: CSS style sheet generated from configured colors and fonts
• /api/config.json: Map configuration

The .rt versions update in real time with Server-Sent Events (SSE). If using a proxy to serve the map, make sure to configure it to let Server-Sent Events through.

The map itself is visible at the root (by default http://localhost:3876/).

Configuration

CTM's config options can be found at create-track-map.json in your server's config directory. It is automatically created at startup if it doesn't exist.

The following options are available:

{
  // Whether to actually start the watcher and the server.
  "enable": false,

  // How long to wait between track data updates.
  "watch_interval_seconds": 0.5,
  // The port the internal web server listens on.
  "server_port": 3876,

  "map_style": {
    // Font to use for the map's UI. Must be a valid CSS font stack.
    "font": "ui-monospace, \"JetBrains Mono\", monospace",
    // Colors for individual components of the map. Must be valid CSS colors.
    // Any CSS color format will work, such as named colors and rgb().
    "colors": {
      "background": "#888",
      "track": {
        "occupied": "red",
        "reserved": "pink",
        "free": "white"
      },
      "signal": {
        "green": "#71db51",
        "yellow": "#ffd15c",
        "red": "#ff5f5c",
        "outline": "black"
      },
      "portal": {
        "primary": "purple",
        "outline": "white"
      },
      "station": {
        "primary": "white",
        "outline": "black"
      },
      "train": "cyan",
      "lead_car": "darkturquoise"
    }
  },

  "map_view": {
    "initial_dimension": "minecraft:overworld",
    "initial_position": { "x": 0, "z": 0 },

    // Zoom levels must be integers, but may be negative.
    // Each zoom level is twice as big as the previous.
    // 0 is a decent minimum but may be impractical for large networks.
    // 3 is the sensible default for viewing double-tracked networks.
    "initial_zoom": 3,
    "min_zoom": 0,
    "max_zoom": 4,

    // Whether a zoom control should be visible on the screen.
    "zoom_controls": true,

    // Which side of the track a signal should be displayed on.
    // Valid values are LEFT or RIGHT (all uppercase).
    "signals_on": "RIGHT"
  },

  "dimensions": {
    // Dimension names must be namespaced.
    "minecraft:overworld": {
      // Label that shows up in the layer switcher.
      "label": "Overworld"
    },
    "minecraft:the_nether": {
      "label": "Nether"
    },
    "minecraft:the_end": {
      "label": "End"
    }
  },

  "layers": {
    "tracks": {
      "label": "Tracks",
      "min_zoom": 0,
      "max_zoom": 4
    },
    "blocks": {
      "label": "Track Occupancy",
      "min_zoom": 0,
      "max_zoom": 4
    },
    "signals": {
      "label": "Signals",
      "min_zoom": 0,
      "max_zoom": 4
    },
    "portals": {
      "label": "Portals",
      "min_zoom": 0,
      "max_zoom": 4
    },
    "stations": {
      "label": "Stations",
      "min_zoom": 0,
      "max_zoom": 4
    },
    "trains": {
      "label": "Trains",
      "min_zoom": 0,
      "max_zoom": 4
    }
  }
}

Reload the config without restarting the server by running /ctm reload (operator permissions required).