from time import sleep
import pygame
import pygame_menu
from pygame_menu import themes

pygame.init()
surface = pygame.display.set_mode((600, 400))

def set_difficulty(value, difficulty):
    print(value)
    print(difficulty)

def start_the_game():
    pass

def level_menu():
   mainmenu._open(level)

mainmenu = pygame_menu.Menu('Welcome', 600, 400, theme=themes.THEME_SOLARIZED)
mainmenu.add.text_input('Name: ', default= 'username', maxchar=20)
mainmenu.add.button('Play', start_the_game)
mainmenu.add.button('levels', level_menu)
mainmenu.add.button('Quit', pygame_menu.events.EXIT)

level = pygame_menu.Menu('Select a Difficulty', 600, 400, theme=themes.THEME_BLUE ) 
level.add.selector('Difficulty :', [('Hard, 1'), ('Easy', 2)], onchange=set_difficulty)

mainmenu.mainloop(surface)