Android: Inform that sensors must be enabled in ProjectSettings

[syntaxerror247]

• Resolves get_accelerometer, get_gravity(), get_magnetometer(), and get_gyroscope() don't work on Godot v4.4.dev4.official - Android #99643
• Resolves get_gravity() not working anymore in godot 4.4 #103115

[syntaxerror247]

@bruvzg Do these settings work for iOS? I checked the code, and it looks like they're only implemented on Android.

[bruvzg]

These should not have any effect on iOS, but seems like Input still printing warning if it's not set.

godot/core/input/input.cpp

Lines 614 to 660 in 394508d

	Vector3 Input::get_gravity() const {
	_THREAD_SAFE_METHOD_
	#ifdef DEBUG_ENABLED
	if (!gravity_enabled) {
	WARN_PRINT_ONCE("`input_devices/sensors/enable_gravity` is not enabled in project settings.");
	}
	#endif
	return gravity;
	}
	Vector3 Input::get_accelerometer() const {
	_THREAD_SAFE_METHOD_
	#ifdef DEBUG_ENABLED
	if (!accelerometer_enabled) {
	WARN_PRINT_ONCE("`input_devices/sensors/enable_accelerometer` is not enabled in project settings.");
	}
	#endif
	return accelerometer;
	}
	Vector3 Input::get_magnetometer() const {
	_THREAD_SAFE_METHOD_
	#ifdef DEBUG_ENABLED
	if (!magnetometer_enabled) {
	WARN_PRINT_ONCE("`input_devices/sensors/enable_magnetometer` is not enabled in project settings.");
	}
	#endif
	return magnetometer;
	}
	Vector3 Input::get_gyroscope() const {
	_THREAD_SAFE_METHOD_
	#ifdef DEBUG_ENABLED
	if (!gyroscope_enabled) {
	WARN_PRINT_ONCE("`input_devices/sensors/enable_gyroscope` is not enabled in project settings.");
	}
	#endif
	return gyroscope;
	}

[syntaxerror247]

The warning will now only print for Android.

@bruvzg We should also implement this for iOS if possible, as it would reduce battery usage.

[bruvzg]

We should also implement this for iOS if possible, as it would reduce battery usage.

Should be possible, but not sure if there will be any effect on the battery.

Sensors are polled here, but it probably requires calling CMMotionManager stopDeviceMotionUpdates to have any effect (it will disable updates for all sensors, I do not think OS will ever disable actual sensors):

godot/platform/ios/godot_view.mm

Line 398 in 394508d

- (void)handleMotion {

Edit: it should be possible to config individual sensors, but code should be changed a bit.

[Repiteo]

Thanks!