init -2 python:   
    w=0  
    def slide_function(trans, st, at):
        global w
        import math
        trans.yalign = w*math.sin(st*16*math.pi)
        return 0
transform vp:
    function slide_function
    repeat
label start:
    scene bg at vp
    show screen my_ekran
    "text"

screen my_ekran():
    if w>0:
        timer 0.3 action SetVariable ("w", 0)
    imagebutton:
        idle  "w.png"
        hover "w1.png"
        action SetVariable ("w", 0.02)

screen preferences():    tag menu
    use game_menu(_("Preferences"), scroll="viewport"):
        vbox:
            xalign 0.5
            hbox:
                box_wrap True
                xalign 0.5

frame:
    background "#00f"
    has vbox
    xalign 0.5

frame:
    background "#0ff"
    has hbox
    xalign 0.5

init python:
    config.layers.insert(1, 'demo')
label start:
    show screen wz
    " "
    return
screen wz():
    layer 'demo'
    if str(renpy.get_mode())=='start':
        add  "water"

def next_morning(self):
        self.alter(days = 1, hours = 8 - self._dt.hour, minutes = - self._dt.minute)

screen nomer(nn=""):
    frame:
        align (0.5, 0.1)
        has hbox
        for cfr in nn:
            add cfr