How do I control this complicated sound effect?

Shadowphile

I have a display of a wheel that I can I can click and drag with my mouse. I want to make a squeaking sound while it's moving, ideally like 'scrubbing' audio in an editor but I'm pretty sure Godot can't do that.
This would be easy if I was clicking increments because then hey, one sound per increment.
I've played with triggering sounds but I can't come up with an effect that works very well.
Any suggestions?

DaveTheCoder

If you can create or find an audio file that produces the sound you want, you can start playing it when you start dragging and stop playing it when the dragging stops.

The sound file would either have to be long enough for the longest drag, or loopable so that it could auto-repeat if it reaches its end before the dragging stops.

There are lots of sound effects available online.

Shadowphile

DaveTheCoder
Thanks for the quick reply!
I have no problem finding something on FreeSound or recording my own.
The problem is that movement of the wheel tracks the mouse; if I click down but not drag there should be no sound. The sound needs to follow the mouse movement to some degree. I could try detecting mouse motion, or even mouse velocity (delta mouse/frame) but what about if I oscillate the mouse back and forth? Its a tricky situation to handle because the physics of sound in that situation is not simple even in the real world. My wheel is actually a tilesheet animation that moves in steps so I might try playing a very short clip with retriggering when the frame changes but that could sound trashy and hard to give it longer evolution in timbre for continuous motion.

xyz

Shadowphile Play small slice each time the mouse is moved, change play position depending on mouse position, don't play new slice if previous slice is still playing.

xyz

Shadowphile There you go:

extends AudioStreamPlayer
var time := 0.0
var pos := 0.0
var slice_max := 0.1
var slice_min := 0.05
var scrub_sensitivity := 0.002

func _input(e):
	if e is InputEventMouseMotion and e.button_mask == MOUSE_BUTTON_MASK_LEFT:
		scrub(e.relative.x * scrub_sensitivity)

func scrub(relative: float):
	pos = clamp(pos + relative, 0, stream.get_length())
	print("%d%%"%(100.0 * pos / stream.get_length()))
	if time < slice_min or is_equal_approx(pos, 0.0) or is_equal_approx(pos, stream.get_length()):
		return
	play(pos)
	time = 0

func _process(dt):
	time += dt
	if time > slice_max:
		stop()

Drag left-right to scrub. You can map whatever gui action you want to relative argument to scrub()