extends Camera2D

export var ZOOM_SPEED = 1.0

var currentZoom
var targetZoom

func _ready():
  var currentZoom = self.get_zoom()
  var targetZoom = currentZoom
  self.set_process(true)

func _process(delta):
  if(targetZoom != currentZoom):
    processSmoothZoom(delta)

func setSmoothZoom(zoomLevel):
  targetZoom = zoomLevel

func processSmoothZoom(delta):
  var cz = self.get_zoom()
  if(cz.x < self.targetZoom.x):
    cz += self.targetZoom * self.ZOOM_SPEED * delta
    if(cz.x > self.targetZoom.x):
       cz = targetZoom
  else:
    cz -= self.targetZoom * self.ZOOM_SPEED * delta
    if(cz.x < self.targetZoom.x):
      cz = targetZoom

  self.set_zoom(cz)