extends Spatial

export(NodePath) var torsoPath
export(NodePath) var cameraPath
export(NodePath) var rayCastPath
export(NodePath) var viewPortPath

const ROT_MOD = 500 
const ROT_DECLINE = 0.1

var _viewRot = false
var _prev_mouse_pos
var _camera : Camera
var _rayCast : RayCast
var _torso : RigidBody
var _viewport : Viewport

var _velx = 0
var _vely = 0



# Called when the node enters the scene tree for the first time.
func _ready():
	PhysicsServer.area_set_param(get_viewport().find_world().get_space(), PhysicsServer.AREA_PARAM_GRAVITY, 0)
	_torso = get_node(torsoPath) as RigidBody
	_camera = get_node(cameraPath) as Camera
	_rayCast = get_node(rayCastPath) as RayCast
	_viewport = get_node(viewPortPath) as Viewport


func _process(delta):
	if _viewRot:
		var mouse_pos = get_viewport().get_mouse_position()
		
		_velx = (mouse_pos.x - _prev_mouse_pos.x) * delta
		_vely = (mouse_pos.y - _prev_mouse_pos.y) * delta
		
		_prev_mouse_pos = mouse_pos
	
	if not(_velx < 0.001 and _velx > -0.001) or not(_vely < 0.001 and _vely > -0.001) or _viewRot:
		_torso.rotate_x(_vely * ROT_MOD * delta * PI/180 - global_transform.basis.get_euler().x)
		_torso.rotate_y(_velx * ROT_MOD * delta * PI/180 - global_transform.basis.get_euler().y)
		
		var decline = (1 - ROT_DECLINE * (delta*100))
		
		if decline > 1:
			decline = 1
		elif decline < 0:
			decline = 0
		
		_velx *= decline
		_vely *= decline


func _physics_process(delta):
	if _viewRot:
		var mouse_pos = _viewport.get_viewport().get_mouse_position()
		
		#set origin of rayCast
		var orig = _camera.project_ray_origin(mouse_pos)
		
		#set cast_to of rayCast
		_rayCast.translation = orig
		_rayCast.cast_to = orig + _camera.project_ray_normal(mouse_pos) * 1000.0
		
		if _rayCast.is_colliding():
			# collider will be the node hit
			print(_rayCast.get_collider())


func _input(event):
	if event is InputEventMouseButton:
		if event.pressed and _viewport.get_viewport().get_mouse_position().x >= 0:
			print("Mouse Click at: ", event.position)
			_prev_mouse_pos = event.position
			_viewRot = true
		else: 
			print("mouse unpressed at: ", event.position)
			_viewRot = false