function _init()
    tiles=loadsurf("tiles.gif")
    setsource(tiles)
    local pal=loadpal("tiles.gif")
    setpal(pal)

    logo=newsurf(36,5)
    back=newsurf(128,96)
    fade.init()

    audio_text_abad     = loadsound(audio_text_abad)
    audio_text_premiere = loadsound(audio_text_premiere)
    audio_text_elalien  = loadsound(audio_text_elalien)
    audio_text_batman   = loadsound(audio_text_batman)
    audio_abad_jump     = loadsound(audio_abad_jump)
    audio_abad_fall     = loadsound(audio_abad_fall)
    audio_abad_hit      = loadsound(audio_abad_hit)
    audio_abad_shot     = loadsound(audio_abad_shot)
    audio_abad_step[1]  = loadsound(audio_abad_step[1])
    audio_abad_step[2]  = loadsound(audio_abad_step[2])
    audio_abad_step[3]  = loadsound(audio_abad_step[3])
    audio_abad_step[4]  = audio_abad_step[2]
    audio_switch        = loadsound(audio_switch)
    audio_hit           = loadsound(audio_hit)
    audio_low           = loadsound(audio_low)

    keyUp = tonumber(getconf("keyup")) or KEY_UP
    keyDown = tonumber(getconf("keydown")) or KEY_DOWN
    keyLeft = tonumber(getconf("keyleft")) or KEY_LEFT
    keyRight = tonumber(getconf("keyright")) or KEY_RIGHT
    keyShoot = tonumber(getconf("keyshoot")) or KEY_SPACE

    btnUp = tonumber(getconf("btnup")) or  BTN_UP
    btnDown = tonumber(getconf("btndown")) or  BTN_DOWN
    btnLeft = tonumber(getconf("btnleft")) or  BTN_LEFT
    btnRight = tonumber(getconf("btnright")) or  BTN_RIGHT
    btnShoot = tonumber(getconf("btnshoot")) or  BTN_A

    --game_init()
    intro_init()
    --final_init()
end

function _update()
    if btnp(KEY_F2) then
        local val = zoom() + 2
        if val >= 10 then val = 2 end
        zoom(val)
    elseif btnp(KEY_F3) then
        local fs = fullscreen()
        fullscreen(not fs)
        cursor(fs)
    end

    if (game_update) then game_update() end
end