generated from krampus/template-godot4
64 lines
1.5 KiB
GDScript3
64 lines
1.5 KiB
GDScript3
|
class_name VolumeSlider extends VBoxContainer
|
||
|
|
## Input element for adjusting the volume of a single bus.
|
||
|
|
|
||
|
|
const VOLUME_FACTOR := 50.0
|
||
|
|
|
||
|
|
@export var bus_idx: int
|
||
|
|
|
||
|
|
var value: float:
|
||
|
|
get:
|
||
|
|
return slider.value
|
||
|
|
set(v):
|
||
|
|
slider.set_value_no_signal(v)
|
||
|
|
spin_box.set_value_no_signal(v)
|
||
|
|
_set_bus_volume(v)
|
||
|
|
|
||
|
|
var _applied_value: float
|
||
|
|
|
||
|
|
@onready var bus_name: Label = %BusName
|
||
|
|
@onready var slider: VSlider = %Slider
|
||
|
|
@onready var spin_box: SpinBox = %SpinBox
|
||
|
|
@onready var audio_demo: AudioStreamPlayer = %AudioDemo
|
||
|
|
|
||
|
|
|
||
|
|
func _ready() -> void:
|
||
|
|
bus_name.text = AudioServer.get_bus_name(bus_idx)
|
||
|
|
audio_demo.bus = bus_name.text
|
||
|
|
_applied_value = _db_to_volume(AudioServer.get_bus_volume_db(bus_idx))
|
||
|
|
value = _applied_value
|
||
|
|
|
||
|
|
|
||
|
|
func _exit_tree() -> void:
|
||
|
|
# Revert volume to the value from the last time `apply` was called
|
||
|
|
_set_bus_volume(_applied_value)
|
||
|
|
|
||
|
|
|
||
|
|
func _db_to_volume(db: float) -> float:
|
||
|
|
return db_to_linear(db) * VOLUME_FACTOR
|
||
|
|
|
||
|
|
|
||
|
|
func _volume_to_db(volume: float) -> float:
|
||
|
|
return linear_to_db(volume / VOLUME_FACTOR)
|
||
|
|
|
||
|
|
|
||
|
|
func _on_component_value_changed(new_value: float) -> void:
|
||
|
|
value = new_value
|
||
|
|
|
||
|
|
|
||
|
|
func _set_bus_volume(new_value: float) -> void:
|
||
|
|
AudioServer.set_bus_volume_db(bus_idx, _volume_to_db(new_value))
|
||
|
|
|
||
|
|
|
||
|
|
func apply() -> void:
|
||
|
|
# Prevent value from being reverted during destructor.
|
||
|
|
_applied_value = value
|
||
|
|
|
||
|
|
|
||
|
|
func _on_slider_drag_ended(value_changed: bool) -> void:
|
||
|
|
if value_changed:
|
||
|
|
audio_demo.play()
|
||
|
|
|
||
|
|
|
||
|
|
func _on_spin_box_value_changed(_new_value: float) -> void:
|
||
|
|
audio_demo.play()
|