extends Spatial

export (float) var fps = 30.0
export (float) var speed = 2.5
export (float) var radius = 1.5
export (float) var rotationSpeed := 3.5

var interval := 0.0
var intervalMax := 0.0
var add := 0.0
var origPos := Vector3()

func _ready():
intervalMax = 1.0 / fps
origPos = transform.origin

func _physics_process(delta):
interval += delta
if interval >= intervalMax:
add += interval * speed
transform.origin.y = origPos.y + sin(add) * radius
rotate_y( interval * rotationSpeed)
interval = 0.0