批处理实现乱雨纷飞（黑客帝国特效）

@echo off&mode con cols=42 lines=20&color 02
set m=1&set v=1
set code==^^^&%%%^:!$#^>^<:=~*()@"'`;\|-_+"b=!a!") else (set "b= ") 
set str%m%=!str%m%!!b!
set /a n+=1
if %n% lss 40 goto lp
set /a x+=1,w+=1
if %x% equ 40 call :lop
cls&for /l %%i in (%m%,-1,%v%) do echo.!str%%i!
set /a m+=1
if %m% geq 20 set /a v+=1
if %w% equ 100 (set w=0&goto begin) else (set n=0&goto lp)
:lop
set /a a=%random%%%15+1
set a=!code:~-%a%,1!
color 0!a!&set x=0

@echo off&mode con cols=42 lines=20&color 02
setlocal enabledelayedexpansion
set code=123456789abcdef
set m=1&set v=1
title 黑客帝国数码雨 by bat-zw19750516
:begin
set /a a=%random%%%2,b=%random%%%3
if %b% neq 0 (set b=%a%) else (set "b= ") 
set str=%str%%b%
set /a n+=1
if %n% lss 40 goto begin
set /a m+=1,x+=1
if %m% geq 20 set /a v+=1 
set str%m%=%str%
cls&for /l %%i in (%m%,-1,%v%) do echo.!str%%i!
if %x% equ 20 call :lp
set str=&set n=0
goto begin
:lp
set /a a=%random%%%15,x=0
set a=!code:~%a%,1!
color 0%a%

@echo off
title 黑客帝国数码雨效果
color 02
setlocal ENABLEDELAYEDEXPANSION
for /l %%i in (1,1,80) do (
set Down%%i=0
)
:heike
for /l %%j in (1,1,80) do (
set /a guxing%%j-=1
if !guxing%%j! LSS 0 (
set /a hanye%%j=!random!%%4
set /a guxing%%j=!random!%%15+10
)
if "!hanye%%j!" == "1" (
set /a shu=!random!%%2
set /p=!shu!<NUL
) else (
set /p= <NUL
)
)
goto heike