Vim script: One two three vai!(Haruka Amami shout)

vaivavai.vim

" Commands

command! -nargs=0 -bang Vai
      \ call s:vai.vavai('<bang>' == '!')


" Variables

let s:vai = {}

" Preparation of initialization.

function! s:vai.__init__()
  call self.__init_variables__()
endfunction

function! s:vai.__init_variables__()
  let self.V = {
        \  'phrases': [
        \    'ワン',
        \    'ツー',
        \    'スリー',
        \    'ゝﾉﾟ ヮﾟﾉﾉヴァイ!'
        \   ],
        \  'interval': '350m'
        \ }
endfunction


" Functions

function! s:vai.vavai(is_bang)
  if !a:is_bang
    " Call again!
    echohl WarningMsg | echomsg 'Vai! VaVai! Vai!' | echohl None
    return
  endif
  call self.create_window('vai!')
  call self.i_want()
endfunction

function! s:vai.create_window(bufname)
  1new
  setlocal bufhidden=wipe
  setlocal buftype=nofile
  setlocal noswapfile
  setlocal nobuflisted
  silent file `=a:bufname`
endfunction

function! s:vai.i_want()
  for _ in self.V.phrases
    call self.shout(_)
    redraw
    execute 'sleep' self.V.interval
  endfor
  close
endfunction

function! s:vai.shout(phrase)
  call setline(1, a:phrase)
endfunction


" Init

call s:vai.__init__()

Usage

:Vai!