extends Node3D

var xr_interface: XRInterface
var xrf
var scene
var player:CharacterBody3D

func _ready():
	xrf = preload("res://xrfragment.gd").new()

	# browser extensions       src regex   handler func
	#                          ----------  -------------
	xrf.src.addExtension.call("^#",        xrf.src.model ) # enable internal embeds
	xrf.src.addExtension.call(".*\\.glb",  xrf.src.model ) # enable external embeds
	xrf.src.addExtension.call(".*\\.gltf", xrf.src.model ) # 
	xrf.src.addExtension.call(".*\\.wav$", xrf.src.audio ) # 
	xrf.src.addExtension.call(".*\\.ogg$", xrf.src.audio ) # 
	xrf.src.addExtension.call(".*\\.mp3$", xrf.src.audio ) # 
	
	add_child(xrf)
	xrf.to("https://xrfragment.org/other.glb", _onXRF )
	player = find_child("PlayerBody")  # optional: use PlayerBody from godot-xr-tools
	player.enabled = false             # optional: turn off gravity


func _onXRF(event:String,data ):
	if event == "scene_loaded":
		scene = data
	if event == 'href':
		print(data)
	if event == 'src':
		print(data)	
	if event == 'teleport':
		print("teleport!")
		#player.teleport( data )    # optional: use PlayerBody
		find_child("XROrigin3D").position = data.origin

	# update URL bar
	# spec 4 @ https://xrfragment.org/doc/RFC_XR_Fragments.html#navigating-content-href-portals
	var URLbar:RichTextLabel = find_child("URLbar")
	URLbar.text = xrf.URI.string


func _input(event):  		
	var cam = find_child("XRCamera3D")
	if event is InputEventMouseMotion:
		var mouse_sens = 0.3
		cam.rotate_y(deg_to_rad(-event.relative.x*mouse_sens))
	if event is InputEventMouseButton and event.pressed:
		if event.button_index == 2:
			xrf.back()
			
		if event.button_index == 3:
			xrf.forward()
			
		if event.button_index == 1:
			# raycast to detect clicked item
			var mouse_pos = get_viewport().get_mouse_position()
			var from = cam.project_ray_origin(mouse_pos)
			var to = from + cam.project_ray_normal(mouse_pos) * 20000 #200
			var space_state = get_world_3d().direct_space_state
			var handle_query = PhysicsRayQueryParameters3D.create(from, to)
			handle_query.collide_with_areas = true
			var mesh_query = PhysicsRayQueryParameters3D.create(from, to)
			mesh_query.collide_with_areas = true
			var intersectMesh   = space_state.intersect_ray(mesh_query)
			var intersectHandle = space_state.intersect_ray(handle_query)
			if intersectMesh.has('collider'):
				xrf.traverse( intersectMesh.collider, xrf.href.click )