Mobile orientation sensor

boruok

Is here any builtin signal or notification for detecting changes of screen orientation from portrait to landscape and vise versa?

TwistedTwigleg

I do not think there is anything built in, but you could probably make something that emits a signal when the orientation changes. This Q&A post in 2016 suggests doing that, though it can be made a little simpler now that the OS singleton provides more information about screen orientation.

Something like this (untested):

extends Node
signal screen_orientation_changed(orientation)
var last_orientation
func _ready()
	last_orientation = OS.screen_orientation
func _process(_delta):
	if OS.screen_orientation != last_orientation:
		emit_signal("screen_orientation_changed", OS.screen_orientation)
		last_orientation = OS.screen_orientation

boruok

@TwistedTwigleg thanks for reply. so i've runned some test on my device and unfortunately found that signal doesn't emitted because OS.screen_orientation doesn't changed at all.

omg: https://github.com/godotengine/godot/issues/17109 bug doesn't fixed since 1 Mar 2018

below is method where you can emit signal based on width of viewport(screen).

extends Node

signal screen_orientation_changed(orientation)

const WINDOW_SIZE := OS.window_size


func _ready():
	get_viewport().connect("size_changed", self, "_on_size_changed")


func _on_size_changed():
	var s := OS.window_size
	
	if WINDOW_SIZE.x < s.x:
		emit_signal("screen_orientation_changed",  "landscape")
		return   # somehow function triggers twice
	else:
		emit_signal("screen_orientation_changed",  "portrait")
		return   # somehow function triggers twice