Send Message (Flowgraph Node)

Overview

• Node Name: Send Message
• Category: (default)
• File: extensions/flowgraph/nodes/thread/sendMessage.lua

Sends a message to another running flowgraph project. Used for inter-project communication.

Pin Schema

Input Pins

Custom input pins can be added for message data (supports string, number, bool, any, table, vec3, quat, color).

Output Pins

Behavior

• init() - Enables pin saving and custom input pins.
• work() - When flow is active, id is set, and not already done:
  • Collects all non-fixed pin values into a data table
  • Sends via thread:sendMessage() or thread:sendNetworkedMessage() depending on networked flag
  • Marks as done (won't send again until reset)
• Reset - The reset impulse clears the done flag.

How It Works

1. Get the target project ID from a loadProject node (or use -1 for the parent project).
2. Set the message name.
3. Add custom input pins for any data to include.
4. On execution, the message is sent once. Use reset to send again.

-- Send a score update to project ID 2:
-- id = 2, name = "score_update", custom pin "score" = 100
-- Calls: self.mgr.modules.thread:sendMessage(2, {score = 100}, self)

-- Send to parent project:
-- id = -1

Key Dependencies

• self.mgr.modules.thread:sendMessage() - Local message delivery
• self.mgr.modules.thread:sendNetworkedMessage() - Networked message delivery

Additional Methods

C:_executionStarted()

Called when graph execution starts. Used for initialization/reset.

C:drawMiddle(builder, style)

Custom ImGui drawing in the middle section of the node in the editor.

Parameters:

• builder
• style

See Also

• Load Project (Flowgraph Node) - Related reference
• Receive Message (Flowgraph Node) - Related reference
• FlowGraph Guide - Guide