extends Node2D
class_name GameManager

enum MouseState { SELECT, BUILD, BUILD_CONNECTION_FIRST, BUILD_CONNECTION_SECOND }

var mouse_state: MouseState
var building_object: Building = null

func build_object(scene: PackedScene):
	mouse_state = MouseState.BUILD
	building_object = scene.instantiate()
	$TileMap.add_child(building_object)
	building_object.start_placement()
	building_object.connect("selected", on_building_selected)
	building_object.connect("task_available", $CitizenManager.add_task)
	
func build_two_point_object(scene: PackedScene):
	build_object(scene)
	mouse_state = MouseState.BUILD_CONNECTION_FIRST
	
func on_building_selected(building: Machine) -> void:
	if mouse_state == MouseState.BUILD_CONNECTION_FIRST:
		building_object.set_start(building)
		mouse_state = MouseState.BUILD_CONNECTION_SECOND
	elif mouse_state == MouseState.BUILD_CONNECTION_SECOND:
		building_object.set_end(building)
		building_object.build()
		mouse_state = MouseState.SELECT
	
func _input(event: InputEvent) -> void:
	if event is InputEventMouse:
		if mouse_state == MouseState.BUILD:
			building_object.position = get_global_mouse_position()
	
	if event is InputEventMouseButton:		
		if mouse_state == MouseState.BUILD:
			building_object.position = get_global_mouse_position()
			building_object.place()
			mouse_state = MouseState.SELECT
		if mouse_state == MouseState.BUILD_CONNECTION_SECOND:
			building_object.add_point(get_global_mouse_position())
	#if mouse_state == MouseState.BUILD_CONNECTION_FIRST