def boss_fight():
    global klony, start, srodek
    builder.teleport_to(start)
    builder.place(BEDROCK)
    srodek = start
    start = positions.add(start, pos(0,1,0))
    player.teleport(start)
    player.execute("/setworldspawn " + start)
    gameplay.title(mobs.target(NEAREST_PLAYER), "§5 Zabawa skończona!", "Już po tobie")
    
    #gameplay.title(mobs.target(NEAREST_PLAYER), "§5 KONIEC TEGO!", "§5 OTO MOJA PRAWDZIWA FORMA")

    #player.execute("/summon wither ~0 ~10 ~0")