UI Bridge

Module defined in lua/common/guihooks.lua. Bridge between Lua and the JavaScript/CEF UI layer. Provides functions to trigger UI events, send streaming data, display messages, and graph debug data.

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Exports

Functions

M.trigger(hookName, ...)

Fires a named event to the UI layer with JSON-encoded arguments.

• Parameters:
  • hookName - string - Event name (e.g., "VehicleChange", "Message")
  • ... - any - Arguments to JSON-encode and send

M.triggerClient(targetDsmId, hookName, ...)

Fires a UI event to a specific client/display.

• Parameters:
  • targetDsmId - number - Target display state manager ID
  • hookName - string - Event name
  • ... - any - Arguments

M.triggerRawJS(hookName, rawJs)

Fires a UI event with raw (pre-encoded) JavaScript data. Wraps the data in [...] brackets automatically.

• Parameters:
  • hookName - string - Event name
  • rawJs - string - Pre-formatted JS data (will be wrapped as [rawJs])

M.triggerStream(streamName, streamData)

Sends streaming data to a named UI stream.

• Parameters:
  • streamName - string - Stream identifier
  • streamData - table - Data to JSON-encode and send

M.queueStream(key, value) / M.send(key, value)

Queues stream data to be sent on the next sendStreams() call. Alias: M.send.

• Parameters:
  • key - string - Stream name
  • value - any - Stream data

M.sendStreams()

Flushes all queued stream data to the UI. Called from the graphics step.

M.message(msg, ttl, category, icon)

Displays a UI toast/notification message.

• Parameters:
  • msg - string - Message text
  • ttl - number|nil - Time to live in seconds (default: 5)
  • category - string|nil - Message category (default: "")
  • icon - string|nil - Icon identifier

M.graph(a, ...)

Sends data to the "Generic Graph" UI app. Each argument defines a graph line.

• Parameters:
  • a, ... - table - Each: {key, value, scale, unit, renderNegatives, color}
• Returns: table - Processed values array

M.graphWithCSV(filename, ...)

Like graph() but also records data to a CSV file for later export.

• Parameters:
  • filename - string|nil - CSV filename
  • ... - table - Graph line definitions

M.graphWithCSVWrite()

Writes the accumulated CSV graph data to disk.

M.reset()

Resets stream state and triggers a VehicleReset UI event.

Variables

M.updateStreams

• Type: boolean
• Description: Flag indicating whether streams should be sent on the next graphics step

Internal Notes

• Uses obj:queueHookJS() on vehicle Lua side, be:queueHookJS() on game engine side
• Stream data is cached and sent in batch during sendStreams() to avoid per-frame overhead
• The checkStreamsAndVehicle() function detects vehicle changes and emits VehicleChange/VehicleReset events
• graph() auto-assigns jet-colormap colors when not specified
• Only sends messages when playerInfo.firstPlayerSeated is true

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See Also

• cdefDebugDraw Reference - Related reference
• cdefGpuMesh Reference - Related reference
• cdefImgui Reference - Related reference
• Common Libraries Overview - Guide