[特效代码] 批处理特效之“看我倒背如流”

batman

&&相信大家都知道倒背如流的意思吧，下面我们就用批来模拟对文本的倒背特效：

@echo off&setlocal enabledelayedexpansion
rem 因论坛处理不了制表符，请将下面tab=后面的空格替换为制表符再运行代码
set "tab=	"
for /l %%a in (10000,1,11000) do (
  set "tg=!tg!"&set "k=!k! "
  set "str=%%a"&set "code=!str:~1!!code!"
)
echo,&echo,┌────────────────────┐
echo,&echo,└────────────────────┘
echo,%tab%%tg:~,24%
for /l %%a in (1,1,20) do (
  set /a bf=%%a*5,n=40-2*%%a
  set /p=!tg!│<nul
  for /l %%b in (1,1,%%a) do set /p=■<nul
  for %%i in (!n!) do set /p=!k:~,%%i!│文本阅读中，请稍等...!bf!%%<nul
  for /l %%c in (1,1,2000) do echo,>nul
)
cls&&echo,&echo,下面且看我倒背如流：&echo,
for /f "tokens=1* delims=:" %%a in ('findstr /n .* a.txt') do (
  set "_%%a=%%b"&set /a n=%%a&echo,
)
for /l %%a in (%n%,-1,1) do (
  set /a s=n-%%a+1,m=s*10+12
  for /l %%b in (1,1,!s!) do echo,
  for %%b in (!m!) do echo,%tab%!tg:~,%%b!
  if defined _%%a (
    set "str=!_%%a!!_%%a!!_%%a!!_%%a!%code%"
    set /a sw=1!str:~4000,4! %% 10000
    for /l %%b in (1,1,!sw!) do (
      set /a kw=sw-%%b
      for %%c in (!kw!) do set /p=!k:~,%%c!!_%%a:~-%%b,%%b!<nul
      for /l %%c in (1,1,200) do echo,>nul
      set /p=!tg!<nul
    )
  )
)
pause>nul
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暂只适用于每行少于80个字符的纯英文文本，测试文本a.txt如下：

I loved you, and I probably still do,
 
And for a while the feeling may remain... 

But let my love no longer trouble you, 

I do not wish to cause you any pain. 

I loved you; and the hopelessness I knew, 

The jealousy, the shyness - though in vain - 

Made up a love so tender and so true 
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112

6666666666666

523066680

闲情雅致啊。
很自然。做点阵渐显应该比cls刷新快。
已经不再用批处理弄这些了