class_name BallSFX extends Node3D
## Controller for ball sound effects.

const BASE_VOLUME := -36.0
const MAX_VOLUME := 3.0
const VELOCITY_ATTENUATION_SCALE := 400.0

const GRASS_PHYSICAL_LAYER := 1 << 32
const SAND_PHYSICAL_LAYER := 1 << 31

@onready var parent: GameBall = $".."

@onready var grass_sfx_player: AudioStreamPlayer3D = %GrassSFXPlayer
@onready var concrete_sfx_player: AudioStreamPlayer3D = %ConcreteSFXPlayer
@onready var sand_sfx_player: AudioStreamPlayer3D = %SandSFXPlayer


func _force_attenuated_volume() -> float:
	# Attenuate volume based on impact force
	return lerpf(
		BASE_VOLUME,
		MAX_VOLUME,
		clampf(parent.linear_velocity.length_squared() / VELOCITY_ATTENUATION_SCALE, 0, 1)
	)


func _play_sfx(player: AudioStreamPlayer3D) -> void:
	player.volume_db = _force_attenuated_volume()
	print("PLAYING: ", player, "... VOLUME: ", player.volume_db)
	player.play()


func play_terrain_sfx(tex_id: int) -> void:
	var player := grass_sfx_player
	match tex_id:
		2:  # sand
			player = sand_sfx_player
		3:  # rock
			player = concrete_sfx_player

	_play_sfx(player)


## Select the appropriate SFX to play based on the collision layer of the collider.
##
## We use the upper bits of the collision layer to indicate standard SFX.
func play_physical_sfx(collision_mask: int) -> void:
	var player := concrete_sfx_player
	if collision_mask & GRASS_PHYSICAL_LAYER:
		player = grass_sfx_player
	elif collision_mask & SAND_PHYSICAL_LAYER:
		player = sand_sfx_player
	_play_sfx(player)