Mirror Camera Script for Godot

extends Spatial

var camera = Camera.new()
var cam_offset

func _process(delta):
	if get_parent().get_viewport().get_camera().get_global_transform().basis.z.dot(get_global_transform().origin)>0:
		return
	
	var p = get_parent().get_viewport().get_camera().get_global_transform().origin - get_global_transform().origin
	camera.look_at(p-cam_offset,Vector3(0,1,0))



func _ready():
	camera = get_node("Viewport/Camera.001")
	var tex = get_node("Viewport").get_render_target_texture()
	get_node("Plane.005").get_mesh().surface_get_material(1).set_shader_param("view",tex)
	cam_offset = camera.get_translation()
	
	# compensa camera
	camera.set_translation( get_global_transform().xform(camera.get_translation()) )
	print(get_global_transform().basis)
	
	set_process(true)