class_name FootstepsComponent
extends Node

@export var skeleton: Skeleton3D
@export var movement: MovementComponent
@export var footsteps: AudioStreamRandomizer
@export var step_threshold := 0.1

const feet_names := ["LeftFoot", "RightFoot"]

var feet: Array[Foot] = []

func _ready():
	for foot_name in feet_names:
		var foot = Foot.new()
		foot.bone_name = foot_name
		foot.bone_id = skeleton.find_bone(foot_name)
		foot.audio = get_node(foot_name)
		foot.position = skeleton.to_global(skeleton.get_bone_global_pose(foot.bone_id).origin)
		foot.attachment = BoneAttachment3D.new()
		foot.attachment.bone_name = foot_name
		foot.attachment.bone_idx = foot.bone_id
		foot.audio.reparent(foot.attachment)
		skeleton.add_child(foot.attachment)
		feet.append(foot)

func _process(delta: float):
	for foot in feet:
		var old_position := foot.position
		foot.position = skeleton.to_global(skeleton.get_bone_global_pose(foot.bone_id).origin)
		foot.velocity = (foot.position - old_position) / delta

		if foot.position.y > step_threshold:
			continue
		
		if foot.velocity.y > 0:
			continue
		
		if foot.velocity.length_squared() < 1.0:
			continue
		
		if foot.audio.playing && foot.audio.get_playback_position() < 0.3:
			continue
		
		play(foot.audio)

func play(audio_player: AudioStreamPlayer3D):
	audio_player.stream = footsteps
	audio_player.play()