extends Node3D

@export var orbit_radius := 1.2
@export var orbit_speed := 0.45
@export var bob_height := 0.35
@export var phase := 0.0

@onready var left_wing: MeshInstance3D = $LeftWing
@onready var right_wing: MeshInstance3D = $RightWing

var _center := Vector3.ZERO
var _elapsed := 0.0


func _ready() -> void:
	_center = position
	_elapsed = phase


func _process(delta: float) -> void:
	_elapsed += delta
	var angle := _elapsed * orbit_speed
	position = (
		_center
		+ Vector3(
			cos(angle) * orbit_radius,
			sin(_elapsed * 1.7) * bob_height,
			sin(angle) * orbit_radius * 0.65
		)
	)
	rotation.y = -angle + PI * 0.5
	var flap := 22.0 + sin(_elapsed * 10.0) * 34.0
	left_wing.rotation_degrees.z = flap
	right_wing.rotation_degrees.z = -flap