extends Camera2D

const MOVEMENT_SPEED = 200
const ZOOM_SPEED = 10
const ZOOM_WINDOW = [0.5, 2]
const BORDER_THRESHOLD = 50

var movement = Vector2()
var zoom_change = 0


func _process(delta):
	movement = Vector2()
	zoom_change = 0
	
	if Input.is_action_pressed("ui_right"):
		movement.x = 1
	if Input.is_action_pressed("ui_left"):
		movement.x = -1
	if Input.is_action_pressed("ui_up"):
		movement.y = -1
	if Input.is_action_pressed("ui_down"):
		movement.y = 1
	
	if Input.is_action_just_pressed("zoom"):
		zoom_change = 1
	if Input.is_action_just_pressed("dezoom"):
		zoom_change = -1
	
	movement = movement.normalized()

	var zoom_value = max(min(zoom.x + zoom_change*ZOOM_SPEED*delta, ZOOM_WINDOW[1]), ZOOM_WINDOW[0])
	zoom = Vector2(zoom_value, zoom_value)
	position = position+movement*MOVEMENT_SPEED*delta