tyler parker
bb1d70c620
Self-contained project code for the "Godot Isn't Just for Games" series: Arduino sketches, the Python serial<->UDP bridge, and the Godot 4 projects, one folder per article.
25 lines
843 B
GDScript
25 lines
843 B
GDScript
extends Control
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# Part 1 — the minimal round trip: a Godot button that toggles an LED on the
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# Arduino. Only the OUTBOUND (command) half of the link is used here; Part 2
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# adds inbound telemetry from the joystick.
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const COMMAND_ADDR := "127.0.0.1"
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const COMMAND_PORT := 4243
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@onready var led_button: Button = $Panel/LedButton
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var _udp_out := PacketPeerUDP.new()
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var _led_on := false
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func _ready() -> void:
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# To SEND with PacketPeerUDP in Godot 4, use set_dest_address — NOT
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# connect_to_host, which is for receiving and silently drops outbound packets.
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_udp_out.set_dest_address(COMMAND_ADDR, COMMAND_PORT)
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led_button.pressed.connect(_on_led_pressed)
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func _on_led_pressed() -> void:
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_led_on = not _led_on
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_udp_out.put_packet(("L1" if _led_on else "L0").to_utf8_buffer())
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led_button.text = "LED: ON" if _led_on else "LED: OFF"
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