## https://forum.godotengine.org/t/how-to-set-all-3d-animation-tracks-to-nearest-interpolation/22056/4
@tool
extends AnimationPlayer


func _ready() -> void:
	interpolation_change()


func interpolation_change() -> void:
	for animation in get_animation_list():
		var anim_track_1: Animation = get_animation(animation)
		var count: int = anim_track_1.get_track_count()
		for i in count:
			anim_track_1.track_set_interpolation_type(
				i, Animation.INTERPOLATION_NEAREST
			)