extends Spatial

# export variables
export(NodePath) var mesh_path
export(NodePath) var color_cast_left
export(NodePath) var color_cast_up
export(bool) var can_turn
export(bool) var is_turned
export(int) var x_rot
export(int) var y_rot
export(int) var z_rot
export(Color) var content_color

onready var outline = get_node("Mesh/Outline") as MeshInstance

# signals
signal flow_changed

# constant variables
const NULL_COLOR = Color(0, 0, 0, 1)

# private variables
var _left_cast : RayCast
var _up_cast : RayCast
var _left_color : Color
var _up_color : Color
var _mesh : MeshInstance


func _ready():
	_left_cast = get_node(color_cast_left) as RayCast
	_up_cast = get_node(color_cast_up) as RayCast
	_mesh = get_node(mesh_path) as MeshInstance


func do_interact(var player):
	if(is_turned):
		rotate_x(x_rot * PI/180)
		rotate_y(y_rot * PI/180)
		rotate_z(z_rot * PI/180)
		is_turned = false;
	else:
		rotate_x(-x_rot * PI/180)
		rotate_y(-y_rot * PI/180)
		rotate_z(-z_rot * PI/180)
		is_turned = true;
	emit_signal("flow_changed")


func _get_color_from_cast(ray_cast : RayCast):
	if ray_cast.is_colliding():
		if get_name() == "Pipe":
			print("TTTTEEEEEEEEEESSSSSSSSSTTTTTTTTTTT")
		var collider = ray_cast.get_collider()
		if collider.is_in_group("Pipes"):
			var new_color = collider.content_color
			if new_color != null:
				return new_color


func update_content_color():
	if _left_cast != null:
		var new_color = _get_color_from_cast(_left_cast)
		if new_color != null:
			_left_color = new_color
	if _up_cast != null:
		var new_color = _get_color_from_cast(_up_cast)
		if new_color != null:
			_up_color = new_color
	
	if _left_color != NULL_COLOR and _up_color != NULL_COLOR:
		pass
	elif _left_color != NULL_COLOR:
		content_color = _left_color
	elif _up_color != NULL_COLOR:
		content_color = _up_color
	
	if _mesh != null:
		var material = _mesh.get_surface_material(0)
		
		if content_color != NULL_COLOR:
			if material == null:
				material = SpatialMaterial.new()
				_mesh.material_override = material
			material.albedo_color = content_color
		else:
			if can_turn:
				#_mesh.material_override = load("res://Materials/Pipe_Dream.tres")
				pass
			else:
				_mesh.material_override = null