class_name KeyboardAnimator extends Resource

@export_group("Idle")
@export var _idle_frequency: float = 0.5
@export var _idle_amplitude: float = 0.1
@export var _idle_offset: float = 1

@export_group("Pressing")
@export var _pressing_lean_pitch: float = 0.05
@export var _pressing_lean_roll: float = 0.01

var _time: float


func animate_keyboard(
	delta: float, position: Vector3, pressed_positions: Dictionary[Vector3, bool]
) -> Transform3D:
	_time += delta

	var rotation := Vector3.ZERO
	for pos: Vector3 in pressed_positions.keys():
		var pos_pressed := pressed_positions[pos]
		if not pos_pressed:
			continue
		rotation.z -= pos.x * _pressing_lean_roll
		rotation.x += pos.z * _pressing_lean_pitch

	return Transform3D(Basis.from_euler(rotation), position)


func animate_key(_delta: float, position: Vector3) -> Transform3D:
	position.y += (
		sin(
			(
				_time * _idle_frequency
				+ position.x * _idle_offset
				+ position.y * _idle_offset
			)
		)
		* _idle_amplitude
	)

	return Transform3D(Basis.IDENTITY, position)