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SNAKE.BAT
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SNAKE.BAT
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:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: SNAKE.BAT - A pure native Windows batch implementation of the classic game
:: ------------------------------------------------------------------------------
:: Written by Dave Benham with some debugging help and technique pointers from
:: DosTips users - See https://www.dostips.com/forum/viewtopic.php?f=3&t=4741
::
:: The game should work on any Windows machine from XP onward using only batch
:: and native external commands. However, the default configuration will most
:: likely have some screen flicker due to the CLS command issued upon every
:: screen refresh. There are two ways to eliminate screen flicker:
::
:: 1 - "Pure batch" via VT100 escape sequences:
:: You can eliminate flicker by enabling the VT100 mode within the game's
:: Graphic options menu. However, this mode requires a console that supports
:: VT100 escape sequences. This comes standard with Windows 10 (and beyond).
:: The Windows 10 console must be configured properly for this to work - the
:: "Legacy Console" option must be OFF. Prior to Windows 10, there was no
:: standard Windows console that supported VT100 escape sequences, though you
:: may find a utility that provides that support.
::
:: 2 - CursorPos.exe cheat from Aacini:
:: You can eliminate screen flicker on any Windows version by placing Aacini's
:: CursorPos.exe in the same folder that contains SNAKE.BAT. This method of
:: eliminating flicker is "cheating" in that it is not pure native batch since
:: it relies on a 3rd party tool. A script to create CursorPos.exe is available
:: at https://goo.gl/hr6Kkn.
::
:: Note that user preferences and high scores are stored in %USERPROFILE%\Snake
:: User saved games have an implicit .snake.txt "extension", and are saved and
:: loaded from the current directory.
::
:: Version History
::
:: 4.1 2018-09-08
:: - Fixed bug in Playfield too large error handling that aborted but hung.
::
:: 4.0 2017-04-10
:: - New Field size options, ranging from tiny to large. Original = Medium.
:: - Reconfigured menu
:: - Added support for VT100 mode to eliminate screen flicker by using
:: with "pure" batch VT100 escape sequences.
::
:: 3.8 2015-02-16
:: - Improve performance of Replay abort
:: - Eliminate flicker at game start when using CursorPos.exe
:: - Use symbols (variables) for lock, key and cmd streams.
::
:: 3.7 2014-08-03
:: - Reduced screen flicker when playing without CursorPos.exe by building
:: entire screen in one variable before CLS and ECHOing the screen.
::
:: 3.6 2014-04-09
:: - Pause after displaying CursorPos.exe message at end if game was launced
:: via double click or START menu.
::
:: 3.5 2014-02-03
:: - Made growth rate user configurable. High scores are now stored for each
:: growth rate played.
:: - Added optional support for Aacini's CursorPos.exe to eliminate screen
:: flicker.
:: - Redesigned storage of configuration options within saved games to make
:: it easier to extend in the future. Existing saved games are automatically
:: converted to the new format.
:: - Simplified replay abort mechanics.
::
:: 3.4 2013-12-26
:: - Added ability to abort a game replay.
::
:: 3.3 2013-12-24
:: - Added Pause functionality.
::
:: 3.2 2013-12-08
:: - Fixed a replay bug. Note that attempting to delete a non-existent file
:: does not raise an error!
:: - Added ability to save a previous game or a High score game to a user
:: named file in the current directory.
:: - Added ability to load and replay a user saved game from the current
:: directory.
::
:: 3.1 2013-12-08
:: - Fixed a bug with the game logs. Must include key mappings in log.
:: High scores from version 3.0 should be deleted from %USERPROFILE%\Snake.
::
:: 3.0 2013-12-07
:: - Made control keys user configurable, including option for 2 key
:: (left/right) or 4 key (left/right/up/down) input.
:: - Made graphics user configurable.
:: - Added ability to display replay of previous game.
:: - Added High Score list, with ability to display replay of High Score games.
::
:: 2.3 2013-12-01
:: - Added elapsed game time to the display.
::
:: 2.2 2013-08-06
:: - Improved comments / internal documentation
:: - A few inconsequential code changes
::
:: 2.1 2013-07-20
:: - Reworked interprocess communication. No more hanging games (I hope).
:: - Fixed parameterization of movement key definition.
:: - Temp file location now controlled by TEMP (or TMP) environment variable.
:: - Implemented a game session lock into temp file names so multiple game
:: instances can share the same TEMP folder without interference.
::
:: 2.0 2013-07-17
:: - First attempt at using XCOPY instead of CHOICE. Game now runs as
:: pure native batch on all Windows versions from XP onward.
::
:: 1.0 2013-07-13 to 1.x
:: - Game required CHOICE command, so did not work on XP without download of
:: a non-standard exe or com file.
::
:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
@echo off
if "%~1" == "startGame" goto :game
if "%~1" == "startController" goto :controller
::---------------------------------------------------------------------
:: setup some global variables used by both the game and the controller
setlocal disableDelayedExpansion
set "toggleVT100="
:getSession
if defined temp (set "tempFileBase=%temp%\") else if defined tmp set "tempFileBase=%tmp%\"
set "tempFileBase=%tempFileBase%Snake%time::=_%"
set "keyFile=%tempFileBase%_key.txt"
set "cmdFile=%tempFileBase%_cmd.txt"
set "gameLock=%tempFileBase%_gameLock.txt"
set "gameLog=%tempFileBase%_gameLog.txt"
set "signal=%tempFileBase%_signal.txt"
set "saveLoc=%userprofile%\Snake"
set "userPref=%saveLoc%\SnakeUserPref.txt"
set "hiFile=%saveLoc%\Snake!size!!growth!Hi"
set "keyStream=9"
set "cmdStream=8"
set "lockStream=7"
::------------------------------------------
:: Lock this game session and launch.
:: Loop back and try a new session if failure.
:: Cleanup and exit when finished
call :launch %lockStream%>"%gameLock%" || goto :getSession
del "%tempFileBase%*"
exit /b
::------------------------------------------
:launch the game and the controller
call :fixLogs
:relaunch
copy nul "%keyFile%" >nul
copy nul "%cmdFile%" >nul
start "" /b cmd /c ^""%~f0" startController %keyStream%^>^>"%keyFile%" %cmdStream%^<"%cmdFile%" 2^>nul ^>nul^"
cmd /c ^""%~f0" startGame %keyStream%^<"%keyFile%" %cmdStream%^>^>"%cmdFile%" ^<nul^"
echo(
::--------------------------------------------------------------
:: Upon exit, wait for the controller to close before returning
:close
2>nul (>>"%keyFile%" call )||goto :close
if "%=exitcode%" equ "00000002" (
set "toggleVT100=1"
goto :relaunch
) else if "%=exitcode%" equ "00000001" (
echo Game play can be improved by installing
echo Aacini's CursorPos.exe, available at
echo https://goo.gl/hr6Kkn
echo(
echo Alternatively, if your console supports
echo VT100 escape sequences, then you can
echo enable VT100 mode within the SNAKE.BAT
echo Graphic options menu.
echo(
echo %cmdcmdline%|find /i "%~f0">nul&&pause
)
exit /b 0
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:game
title %~nx0
cls
::---------------------------------------
:: Default playfield size
:: max playing field: (width-2)*(height-2) <= 1365
set "size=Medium"
set "dispWidth=40" max=99
set "dispHeight=25" max=99
set "defaultSize=%size%"
set /a "defaultWidth=dispWidth, defaultHeight=dispHeight"
::----------------------------
:: Other default values
set "moveKeys=4"
set "up=W"
set "down=S"
set "left=A"
set "right=D"
set "pause=P"
set "space= "
set "bound=#"
set "food=+"
set "head=@"
set "body=O"
set "death=X"
set "vt0=OFF"
set "vt1=ON"
set "vt=0"
set "growth=1"
::--- sendCmd macro ---
:: sendCmd command
::: sends a command to the controller
set "sendCmd=>&%cmdStream% echo"
::---------------------------
:: Load user preferences
if exist "%userPref%" for /f "usebackq delims=" %%V in ("%userPref%") do set "%%V"
call :resize
::---------------------------
:: Variable constants
set "configOptions=diffCode difficulty growth moveKeys up down left right size dispWidth dispHeight"
for %%S in (
"T Tiny 15 10"
"S Small 25 15"
"M Medium 40 25"
"L Large 47 32"
"W Wide 82 19"
"N Narrow 20 40"
) do for /f "tokens=1-4" %%A in (%%S) do (
set "size%%A=%%B"
set /a "width%%A=%%C, height%%A=%%D"
)
set "spinner1=-"
set "spinner2=\"
set "spinner3=|"
set "spinner4=/"
set "spinner= spinner1 spinner2 spinner3 spinner4 "
set "delay1=20"
set "delay2=15"
set "delay3=10"
set "delay4=7"
set "delay5=5"
set "delay6=3"
set "desc1=Sluggard"
set "desc2=Crawl"
set "desc3=Slow"
set "desc4=Normal"
set "desc5=Fast"
set "desc6=Insane"
set "spinnerDelay=3"
:: define LF as a Line Feed (newline) character
set ^"LF=^
^" Above empty line is required - do not remove
:: define CR as a Carriage Return character
for /f %%A in ('copy /Z "%~dpf0" nul') do set "CR=%%A"
:: define BS as a BackSpace character
for /f %%A in ('"prompt $H&for %%B in (1) do rem"') do set "BS=%%A"
set "upper=A B C D E F G H I J K L M N O P Q R S T U V W X Y Z"
set "invalid=*~="
::---------------------------
:: define macros
if %vt% equ 1 (
for /f "delims=" %%E in (
'forfiles /p "%~dp0." /m "%~nx0" /c "cmd /c echo(0x1B"'
) do (
cls
<nul set /p "=%%E7"
set "cls=<nul set /p "=%%E8""
set "ClearLine=<nul set /p "=%%E[K""
set "ClearPrev=echo(&echo(%%E[F%%E[K"
set "Up4=echo(%%E[F%%E[F%%E[F%%E[F%%E[F"
set "ShowCursor=<nul set /p "=%%E[?25h""
set "HideCursor=<nul set /p "=%%E[?25l""
set "exitCode=0"
)
) else if exist "%~dp0CursorPos.exe" (
set "cls=CursorPos 0 0"
set "ClearLine=echo( &CursorPos 0 -1"
set "ClearPrev=CursorPos 0 -0&echo( "
set "Up4=CursorPos 0 -4"
set "ShowCursor="
set "HideCursor="
set "exitCode=0"
) else (
set "cls=cls"
set "ClearLine="
set "ClearPrev="
set "Up4="
set "ShowCursor="
set "HideCursor="
set "exitCode=1"
)
:: define a newline with line continuation
set ^"\n=^^^%LF%%LF%^%LF%%LF%^^"
:: setErr
::: Sets the ERRORLEVEL to 1
set "setErr=(call)"
:: clrErr
::: Sets the ERRORLEVEL to 0
set "clrErr=(call )"
:: getKey [ValidKey] [ValidKey...]
::: Check for keypress from the controller. Only accept a ValidKey.
::: Token delimiters and poison characters must be quoted.
::: Accept any key if no ValidKey specified.
::: Return result in Key variable. Key is undefined if no valid keypress.
set getKey=%\n%
for %%# in (1 2) do if %%#==2 (%\n%
set key=%\n%
set inKey=%\n%
set keyTest=%\n%
^<^&%keyStream% set /p "inKey="%\n%
if defined inKey (%\n%
set inKey=!inKey:~0,-1!%\n%
for %%C in (!args!) do set /a keyTest=1^&if /i !inKey! equ %%~C set key=!inKey!%\n%
)%\n%
if not defined keyTest set key=!inKey!%\n%
) else set args=
:: draw
::: draws the board
set draw=%\n%
set screen=%\n%
for /l %%Y in (0,1,!height!) do set screen=!screen!!line%%Y!!LF!%\n%
set screen=!screen!Speed = !Difficulty! !replay!!LF!Growth Rate = !growth! HighScore = !hi!!LF!Score = !score! Time = !m!:!s!%\n%
if defined replay if not defined replayFinished (%\n%
set screen=!screen!!LF!!LF!Press a key to abort the replay%\n%
)%\n%
%cls%^&echo(!screen!
:: test X Y ValueListVar
::: tests if value at coordinates X,Y is within contents of ValueListVar
set test=%\n%
for %%# in (1 2) do if %%#==2 (for /f "tokens=1-3" %%1 in ("!args!") do (%\n%
for %%A in ("!line%%2:~%%1,1!") do if "!%%3:%%~A=!" neq "!%%3!" %clrErr% else %setErr%%\n%
)) else set args=
:: plot X Y ValueVar
::: places contents of ValueVar at coordinates X,Y
set plot=%\n%
for %%# in (1 2) do if %%#==2 (for /f "tokens=1-3" %%1 in ("!args!") do (%\n%
set "part2=!line%%2:~%%1!"%\n%
set "line%%2=!line%%2:~0,%%1!!%%3!!part2:~1!"%\n%
)) else set args=
::--------------------------------------
:: start the game
setlocal enableDelayedExpansion
if not exist "%saveLoc%\" md "%saveLoc%"
set "replay= Aborting... "
set "replayAvailable="
if exist "!gameLog!" set "replayAvailable=R"
call :loadHighScores
call :mainMenu
::--------------------------------------
:: main loop (infinite loop)
for /l %%. in () do (
%=== check for and process abort signal if in replay mode ===%
if defined replay if exist "%signal%" (
del "%signal%"
set "replayFinished=1"
%draw%
echo(
%ClearLine%
<nul set /p "=Aborting... "
findstr "^" >nul <&%keyStream%
for %%A in (!configOptions!) do set "%%A=!%%ASave!"
%ShowCursor%
call :mainMenu
)
%=== compute time since last move ===%
for /f "tokens=1-4 delims=:.," %%a in ("!time: =0!") do set /a "t2=(((1%%a*60)+1%%b)*60+1%%c)*100+1%%d-36610100, tDiff=t2-t1"
if !tDiff! lss 0 set /a tDiff+=24*60*60*100
if !tDiff! geq !delay! (
%=== delay has expired, so time for movement ===%
set /a t1=t2
%=== compute game time ===%
if not defined gameStart set "gameStart=!t2!"
set /a "gameTime=(t2-gameStart)"
if !gameTime! lss 0 set /a "gameTime+=24*60*60*100"
set /a "gameTime=(gameTime-pauseTime)/100, m=gameTime/60, s=gameTime%%60"
if !m! lss 10 set "m=0!m!"
if !s! lss 10 set "s=0!s!"
%=== get keypress ===%
%getKey% !keys!
if /i !key! equ !pause! (
%=== pause game ===%
echo(
%ShowCursor%
call :ask "PAUSED - Press a key to continue..."
%HideCursor%
%ClearPrev%
%sendCmd% go
for /f "tokens=1-4 delims=:.," %%a in ("!time: =0!") do set /a "t2=(((1%%a*60)+1%%b)*60+1%%c)*100+1%%d-36610100, tDiff=t2-t1"
if !tDiff! lss 0 set /a tDiff+=24*60*60*100
set /a pauseTime+=tDiff
) else (
%=== establish direction ===%
if not defined replay (echo(!key!.) >>"!gameLog!"
for %%K in (!key!) do if !moveKeys! equ 2 (
set /a "xDiff=xTurn%%K*!yDiff!, yDiff=yTurn%%K*!xDiff!"
) else if "!%%KAxis!" neq "!axis!" (
set /a "xDiff=xDiff%%K, yDiff=yDiff%%K"
set "axis=!%%KAxis!"
)
%=== erase the tail ===%
set "TX=!snakeX:~-2!"
set "TY=!snakeY:~-2!"
set "snakeX=!snakeX:~0,-2!"
set "snakeY=!snakeY:~0,-2!"
%plot% !TX! !TY! space
%=== compute new head location and attempt to move ===%
set /a "X=PX+xDiff, Y=PY+yDiff"
set "X= !X!"
set "Y= !Y!"
set "X=!X:~-2!"
set "Y=!Y:~-2!"
(%test% !X! !Y! playerSpace) && (
%=== move successful ===%
%=== remove the new head location from the empty list ===%
for %%X in ("!X!") do for %%Y in ("!Y!") do set "empty=!empty:#%%~X %%~Y=!"
%=== eat any food that may be present ===%
(%test% !X! !Y! food) && (
%=== initiate growth ===%
set /a grow+=growth
%=== locate and draw new food ===%
if defined replay (
<&%keyStream% set /p "F="
) else (
set /a "F=(!random!%%(emptyCnt-1))*6+1"
(echo !F!) >>"!gameLog!"
)
for %%F in (!F!) do (%plot% !empty:~%%F,5! food)
)
if !grow! gtr 0 (
%=== restore the tail ===%
%plot% !TX! !TY! body
set "snakeX=!snakeX!!TX!"
set "snakeY=!snakeY!!TY!"
set /a emptyCnt-=1
%=== manage score ===%
set /a "score+=1, grow-=1"
if not defined replay if !score! gtr !hi! set /a "hi+=1, newHi=1"
) else (
%=== add the former tail position to the empty list ===%
set "empty=!empty!#!TX! !TY!"
)
%=== draw the new head ===%
if defined snakeX (%plot% !PX! !PY! body)
%plot% !X! !Y! head
%=== Add the new head position to the snake strings ===%
set "snakeX=!X!!snakeX!"
set "snakeY=!Y!!snakeY!"
set "PX=!X!"
set "PY=!Y!"
%draw%
) || (
%=== failed move - game over ===%
set "replayFinished=1"
%plot% !TX! !TY! body
call :spinner !PX! !PY! death
%draw%
if defined newHi (
echo(
echo New High Score - Congratulations^^!
set "hi!diffCode!=!score!"
copy "!gameLog!" "%hiFile%!diffCode!.txt" >nul
>>"%hiFile%!diffCode!.txt" echo ::!score!
)
echo(
%ClearLine%
%ShowCursor%
call :ask "Press a key to continue..."
for %%A in (!configOptions!) do set "%%A=!%%ASave!"
call :mainMenu
)
)
)
)
::-------------------------------------
:getString Prompt Var MaxLen
:: Prompt for a string with max lengh of MaxLen.
:: Valid keys are alpha-numeric, space, underscore, and dash
:: String is terminated by Enter
:: Backspace works to delete previous character
:: Result is returned in Var
set /a "maxLen=%3"
set "%2="
%sendCmd% prompt
<nul set /p "=%~1 "
call :purge
:getStringLoop
(%getKey% !upper! 0 1 2 3 4 5 6 7 8 9 " " _ - {Enter} !BS!)
if defined key (
if !key! equ {Enter} (
echo(
exit /b
)
if !key! neq !BS! if !maxLen! gtr 0 (
set /a maxLen-=1
<nul set /p "=.!BS!!key!"
set "%2=!%2!!key!
)
if !key! equ !BS! if defined %2 (
set /a maxLen+=1
<nul set /p "=!BS! !BS!"
set "%2=!%2:~0,-1!"
)
)
if defined inKey %sendCmd% one
goto :getStringLoop
::-------------------------------------
:ask Prompt ValidKey [Validkey]...
:: Prompt for a keypress.
:: Wait until a ValidKey is pressed and return result in Key variable.
:: Token delimiters, ), and poison characters must be quoted.
%sendCmd% prompt
<nul set /p "=%~1 "
(set validKeys=%*)
(set validKeys=!validKeys:%1=!)
call :purge
:getResponse
(%getKey% !validKeys!)
if not defined key (
if defined inKey %sendCmd% one
goto :getResponse
)
exit /b
:purge
set "inKey="
for /l %%N in (1 1 1000) do (
set /p "inKey="
if "!inKey!" equ "{purged}." exit /b
)<&%keyStream%
goto :purge
::-------------------------------------
:spinner X Y ValueVar
set /a d1=-1000000
for /l %%N in (1 1 5) do for %%C in (%spinner%) do (
call :spinnerDelay
%plot% %1 %2 %%C
%draw%
)
call :spinnerDelay
(%plot% %1 %2 %3)
exit /b
::-------------------------------------
:delay centiSeconds
setlocal
for /f "tokens=1-4 delims=:.," %%a in ("!time: =0!") do set /a "spinnerDelay=%1, d1=(((1%%a*60)+1%%b)*60+1%%c)*100+1%%d-36610100"
:: fall through to :spinnerDelay
::-------------------------------------
:spinnerDelay
for /f "tokens=1-4 delims=:.," %%a in ("!time: =0!") do set /a "d2=(((1%%a*60)+1%%b)*60+1%%c)*100+1%%d-36610100, dDiff=d2-d1"
if %dDiff% lss 0 set /a dDiff+=24*60*60*100
if %dDiff% lss %spinnerDelay% goto :spinnerDelay
set /a d1=d2
exit /b
::-------------------------------------
:mainMenu
if defined toggleVT100 call :graphicOptions
cls
call :resize
set "loadAvailable="
echo SNAKE.BAT v4.0 by Dave Benham
echo(
echo Main Menu:
echo(
echo N - New game
echo F - Field size..... !size!
echo W - groWth rate.... !growth!
echo C - Control options
echo G - Graphic options
if defined replayAvailable echo R - Replay previous game
if defined saveAvailable echo S - Save a game
if exist *.snake.txt echo L - Load and watch a saved game&set "loadAvailable=L"
echo Q - Quit
echo(
set "hiAvailable="
for /l %%N in (1 1 6) do if defined hi%%N (
if not defined hiAvailable (
echo Replay High Score:
echo(
)
set "desc=!desc%%N!........"
set "hiAvailable=!hiAvailable! %%N"
echo %%N - !desc:~0,8! !hi%%N!
)
if defined hiAvailable echo(
set "keys=N F W C G Q !hiAvailable! !replayAvailable! !saveAvailable! !loadAvailable!"
call :ask ">" !keys!
if /i !key! equ Q (
%sendCmd% quit
cls
exit %exitCode%
) else if /i !key! equ N (
set "replay="
set "replayAvailable=R"
set "saveAvailable=S"
goto :initialize
) else if /i !key! equ S (
if defined replayAvailable (
call :ask "HighScore # or P for Previous:" !hiAvailable! P
) else (
call :ask "HighScore #:" !hiAvailable!
)
echo !key!
if /i !key! equ P (set "src=!gameLog!") else set "src=%hiFile%!key!.txt"
call :getString "Save file name:" file 20
copy "!src!" "!file!.snake.txt"
call :ask "Press a key to continue..."
) else if /i !key! equ L (
call :getString "Load file name:" file 20
if exist "!file!.snake.txt" (
set "replay=!file!.snake.txt"
goto :initialize
)
echo Error: File "!file!.snake.txt" not found
call :ask "Press a key to continue..."
) else if /i !key! equ R (
set "replay=!gameLog!"
goto :initialize
) else if /i !key! equ C (
call :controlOptions
) else if /i !key! equ G (
call :graphicOptions
) else if /i !key! equ F (
call :sizeOptions
) else if /i !key! equ W (
call :ask "Press a digit for growth rate (0 = 10)" 0 1 2 3 4 5 6 7 8 9
if !key! equ 0 set "key=10"
set "growth=!key!"
call :loadHighScores
) else if !key! geq 1 if !key! leq 6 (
set "replay=%hiFile%!key!.txt"
goto :initialize
)
goto :mainMenu
::-------------------------------------
:sizeOptions
cls
set "keys=T S M L W N"
echo Field Size Options:
echo(
echo T - Tiny 15 x 10
echo S - Small 30 x 20
echo M - Medium 40 x 25
echo L - Large 47 x 32
echo W - Wide 82 x 19
echo N - Narrow 15 x 40
echo(
call :ask ">" !keys!
set "size=!size%key%!"
set /a "dispWidth=!width%key%!, dispHeight=!height%key%!"
call :loadHighScores
goto :saveUserPrefs
exit /b
::-------------------------------------
:controlOptions
cls
set "keys={Enter} T L R P"
if !moveKeys! equ 4 set "keys=!keys! U D"
echo Control Options:
echo(
echo T - Type... = !moveKeys! keys
echo(
echo L - Left... = !left!
echo R - Right.. = !right!
if !moveKeys! equ 4 echo U - Up..... = !up!
if !moveKeys! equ 4 echo D - Down... = !down!
echo(
echo P - Pause.. = !pause!
echo(
echo {Enter} - Return to Main Menu
echo(
call :ask ">" !keys!
if !key! equ {Enter} goto :saveUserPrefs
if /i !key! equ T (
if !moveKeys! equ 2 (set "moveKeys=4") else set "moveKeys=2"
goto :controlOptions
)
set "option= LLeft RRight UUp DDown PPause"
for /f %%O in ("!option:* %key%=!") do (
call :ask "Press a key for %%O:"
for %%K in (0 1 2) do if "!key!" equ "!invalid:~%%K,1!" goto :controlOptions
for %%C in (!upper!) do set "key=!key:%%C=%%C!"
set "%%O=!key!"
)
goto :controlOptions
::-------------------------------------
:graphicOptions
set "toggleVT100="
cls
echo Graphic Options:
echo(
echo B - Border...... = !bound!
echo E - Empty space. = !space!
echo H - snake Head.. = !head!
echo S - Snake body.. = !body!
echo F - Food........ = !food!
echo D - Death....... = !death!
echo(
echo V - VT100 mode.. = !vt%vt%!
echo(
echo {Enter} - Rturn to Main Menu
echo(
call :ask ">" B E H S F D V {Enter}
if !key! equ {Enter} goto :saveUserPrefs
if /i !key! equ V (
set /a "vt=^!vt"
call :saveUserPrefs
%sendCmd% quit
exit 2
) else (
set "option=-BBorder:bound:-EEmpty Space:space:-HSnake Head:head:-SSnake Body:body:-FFood:food:-DDeath:death:"
for /f "tokens=1,2 delims=:" %%A in ("!option:*-%key%=!") do (
call :ask "Press a key for %%A"
for %%K in (0 1 2) do if "!key!" equ "!invalid:~%%K,1!" goto :graphicOptions
set "%%B=!key!"
)
)
goto :graphicOptions
::------------------------------------
:saveUserPrefs
(for %%V in (moveKeys up down left right space bound food head body death pause growth vt size dispWidth dispHeight) do echo %%V=!%%V!) >"%userPref%"
exit /b
::-------------------------------------
:initialize
cls
if defined replay (
echo Replay Speed Options:
) else (
echo Speed Options:
)
echo delay
echo # Description (seconds)
echo --- ----------- ---------
for /l %%N in (1 1 6) do (
set "delay=0!delay%%N!"
set "desc=!desc%%N! "
echo %%N !desc:~0,11! 0.!delay:~-2!
)
echo(
call :ask "Pick a speed (1-6):" 1 2 3 4 5 6
set "difficulty=!desc%key%!"
set "delay=!delay%key%!"
set "diffCode=%key%"
echo %key% - %difficulty%
echo(
<nul set /p "=Initializing."
for %%A in (!configOptions!) do set "%%ASave=!%%A!"
if defined replay (
%sendCmd% replay
%sendCmd% !replay!
call :waitForSignal
set "replay=(REPLAY at !difficulty!)"
set "size=%defaultSize%"
set /a "dispWidth=defaultWidth, dispHeight=defaultHeight"
:loadReplayConfig
<&%keyStream% set /p "ln="
if "!ln!" neq "END" set "!ln!" & goto :loadReplayConfig
call :resize
)
set "axis=X"
set "xDiff=+1"
set "yDiff=+0"
set "empty="
set /a "PX=1, PY=height/2, FX=width/2+1, FY=PY, score=0, emptyCnt=0, t1=-1000000"
set "gameStart="
set "m=00"
set "s=00"
set "snakeX= %PX%"
set "snakeY= %PY%"
set "snakeX=%snakeX:~-2%"
set "snakeY=%snakeY:~-2%"
for /l %%Y in (0 1 %height%) do (
<nul set /p "=."
set "line%%Y="
for /l %%X in (0,1,%width%) do (
set "cell="
if %%Y equ 0 set "cell=%bound%"
if %%Y equ %height% set "cell=%bound%"
if %%X equ 0 set "cell=%bound%"
if %%X equ %width% set "cell=%bound%"
if %%X equ %PX% if %%Y equ %PY% set "cell=%head%"
if not defined cell (
set "cell=%space%"
set "eX= %%X"
set "eY= %%Y"
set "empty=!empty!#!eX:~-2! !eY:~-2!"
set /a emptyCnt+=1
)
if %%X equ %FX% if %%Y equ %FY% set "cell=%food%"
set "line%%Y=!line%%Y!!cell!"
)
)
set "replayFinished="
if defined replay (
set "keys="
set "hi=0"
for /f "delims=:" %%A in ('findstr "^::" "%hiFile%!diffCode!.txt" 2^>nul') do set "hi=%%A"
%HideCursor%
cls
(%draw%)
call :delay 100
) else (
if defined hi%diffCode% (set "hi=!hi%diffCode%!") else set "hi=0"
cls
(%draw%)
>"!gameLog!" (
for %%A in (!configOptions!) do (echo %%A=!%%A!)
(echo END)
)
echo(
if !moveKeys! equ 4 (
echo Controls: !up!=up !down!=down !left!=left !right!=right !pause!=pause
) else (
echo Controls: !left!=left !right!=right !pause!=pause
)
echo Avoid running into yourself (!body!!body!!head!^) or wall (!bound!^)
echo Eat food (!food!^) to grow.
echo(
call :ask "Press a key to start..."
%HideCursor%
%sendCmd% go
)
set "pauseTime=0"
set "xDiff!up!=+0"
set "xDiff!down!=+0"
set "xDiff!left!=-1"
set "xDiff!right!=+1"
set "yDiff!up!=-1"
set "yDiff!down!=+1"
set "yDiff!left!=+0"
set "yDiff!right!=+0"
set "!up!Axis=Y"
set "!down!Axis=Y"
set "!left!Axis=X"
set "!right!Axis=X"
set "xTurn!left!=1"
set "xTurn!right!=-1"
set "yTurn!left!=-1"
set "yTurn!right!=1"
set "playerSpace=!space!!food!"
set ^"keys="!left!" "!right!" "!pause!"^"
set "newHi="
set "grow=0"
if !moveKeys! equ 4 set ^"keys=!keys! "!up!" "!down!"^"
if defined Up4 if not defined replay (
%Up4%
for /l %%N in (1 1 5) do (echo( )
)
exit /b
::-------------------------------------
:waitForSignal
if not exist "%signal%" goto :waitForSignal
del "%signal%"
exit /b
::-------------------------------------
:loadHighScores
set "saveAvailable="
for /l %%N in (1 1 6) do (
set "hi%%N="
for /f "delims=:" %%A in ('findstr "^::" "%hiFile%%%N.txt" 2^>nul') do (
set "hi%%N=%%A"
set "saveAvailable=S"
)
)
exit /b
::----------------------------
:resize the console window
set /a cols=dispWidth+1, lines=dispHeight+10, area=(dispWidth-2)*(dispHeight-2)
if %area% gtr 1365 (
echo ERROR: Playfield area too large
%sendCmd% quit
exit
)
if %lines% lss 25 set lines=25
if %cols% lss 46 set cols=46
mode con: cols=%cols% lines=%lines%
set /a "width=dispWidth-1, height=dispHeight-1"
set "resize="
exit /b
::-------------------------------------
:fixLogs
setlocal enableDelayedExpansion
for %%F in (*.snake) do (
ren "%%F" "%%F.txt"
call :fixLog "%%F.txt"
)
pushd "%SaveLoc%"
for /f "delims=" %%F in ('dir /b SnakeHi*.txt 2^>nul') do (
set "file=%%~nF"
set "file=Snake1Hi!file:~-1!.txt"
ren "%%F" "!file!"
call :fixLog "!file!"
)
for /f "tokens=1* delims=eE" %%A in (
'dir /b Snake*Hi*.txt ^| findstr /i "^Snake[0-9]"'
) do ren "Snake%%B" "SnakeMedium%%B"
popd
exit /b
:fixLog filePath
>"%~1.new" (
<"%~1" (
for %%A in (diffCode difficulty moveKeys up down left right) do (
set /p "val="