::***帝国数码雨
@echo %dbg% off
setlocal ENABLEDELAYEDEXPANSION
mode con cols=80 lines=30
cls
 
set 退格=
set redtek=" "
 
set end=0
 
:start
 
set /a end+=1
 
call :calc
 
set /p=!setspaces! nul
 
set /p=%退格%
 
set /p=%redtek:~1,79%
 
goto :start
 
:calc
 
if %end%==28 (
 
set /a end=0 & cls & set /a cols=!random:~0,2!
 
echo ... 风力：!cols! ... 
 
if !cols! GTR 76 set cols=76
 
if !cols! LSS 2 set cols=2
 
set setspaces=!redtek:~1,%cols%!!random:~0,1!
 
goto :eof
 
)
 
@echo off
mode con cols=80
color 02
for /f %%i in (test.txt) do set str_char=%%i
set str_blank= 
setlocal enabledelayedexpansion
 
:loop
:: 取随机位置上的字符
set /a num_char=1%random:~-1%%random:~0,1%-100
set char=!str_char:~-%num_char%,1!
 
:: 设置随机长度的空格
set /a num_blank=1%random:~-1%%random:~0,1%-100
set blank=!str_blank:~0,%num_blank%!
echo.%blank%%char%
goto loop
 
@echo off
 
mode con cols=80
set a=1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ~`!@#%.*(){}[]_+-=\"'?.,/^&^^^>^<
set b= 
setlocal enabledelayedexpansion
:a
set /a num=%random%%%92
set 字符=!a:~-%num%,1!
set/a c=%random%%%80
set 空格=!b:~-%c%!
echo %空格%^%字符%
goto a
 
 
@echo off
mode con cols=80 LINES=30
set a=1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ~`!@#%.*(){}[]_+-=\"'?.,/^&^^^>^<
set b= 
setlocal enabledelayedexpansion
:a
set /a num=%random%%%92
set 字符=!a:~-%num%,1!
set/a c=%random%%%80
set 空格=!b:~-%c%!
::echo. %空格%^%字符%
 
set/a i+=1
rem 指针=i 尾指针=j
set/a j=i-30
set line%i%=%空格%^%字符%
FOR /L %%v IN (%i%,-1,%j%) DO echo.!line%%v!
::ping /n 127.1>nul
goto a
 
@echo off
::mode con cols=80
setlocal ENABLEDELAYEDEXPANSION
color 02
 
goto BEGIN
goto :eof
 
::function mt_rand "a" "b"
:mt_rand
::(
set a=%~1
set b=%~2
set /a _mt_rand=(!random!%%(%b%-%a%))+%a%
exit /b 0
::)
 
:BEGIN
::{--
SET iWidth=80
SET iDensity=6
SET sText="#$&'()*+,-./0123456789:;<>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~
SET sText=!sText:"=!
set /A iText=90-1
 
for /l %%i in (1,1,%iWidth%) do (
set aDown%%i=0
)
 
:loop
for /l %%I in (1,1,%iWidth%) do (
set /a aDown%%I-=1
if !aDown%%I! LSS 0 (
call :mt_rand "0" "%iDensity%"&&set aArrow%%I=!_mt_rand!
call :mt_rand "10" "25"&&set aDown%%I=!_mt_rand!
)
if !aArrow%%I! EQU 1 (
call :mt_rand "0" "%iText%"&&(FOR %%M IN ("!_mt_rand!") DO SET aa=!sText:~%%~M,1!)
set /p=!aa!
) else (
set /p=
)
)
goto loop
::--}
 
:exit
exit /b 0
 
@echo off
setlocal ENABLEDELAYEDEXPANSION
color 02
 
for /l %%i in (1,1,80) do (
set Down%%i=0
)
 
:loop
for /l %%j in (1,1,80) do (
set /a Down%%j-=1
if !down%%j! LSS 0 (
set /a Arrow%%j=!random!%%4
set /a Down%%j=!random!%%15+10
)
if "!Arrow%%j!" == "1" (
set /a chr=!random!%%2
set /p=!chr!
) else (
set /p=
)
)
goto loop
goto :eof
 
@echo off
setlocal ENABLEDELAYEDEXPANSION
for /l %%i in (1,1,80) do (
set Down%%i=0
)
 
for /l %%i in (0) do (
set line=
for /l %%j in (1,1,80) do (
set /a Down%%j-=1
call set x=!down%%j!
if !x! LSS 0 (
set /a Arrow%%j=!random!%%6
set /a Down%%j=!random!%%15+10
)
call set x=!Arrow%%j!
if "!x!" == "1" (
set line=!line!1
) else (set "line=!line! ")
)
call set /p=!line!
)