snke game 1

 

@echo off
	if "%~1" == "startGame" goto :game
	if "%~1" == "startController" goto :controller
	::------------------------------------------------------------
	:: verify existence of CHOICE command
	:: set up a macro appropriately depending on available version
	set "choice="
	2>nul >nul choice /c:yn /t 0 /d y
	if errorlevel 1 if not errorlevel 2 set "choice=choice /cs"
	if not defined choice (
	2>nul >nul choice /c:yn /t:y,1
	if errorlevel 1 if not errorlevel 2 set "choice=choice /s"
	)
	if not defined choice (
	echo ERROR: This game requires the CHOICE command, but it is missing.
	echo Game aborted. :(
	echo(
	echo A 16 bit port of CHOICE.EXE from FREEDOS is available at
	echo http://winsupport.org/utilities/freedos-choice.html
	echo(
	echo A 32 bit version from ??? suitable for 64 bit machines is available at
	echo http://hp.vector.co.jp/authors/VA007219/dkclonesup/choice.html
	echo(
	exit /b
	)
	::---------------------------------------------------------------------
	:: setup some global variables used by both the game and the controller
	set "keys=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
	set "keyFile=key.txt"
	set "cmdFile=cmd.txt"
	::------------------------------------------
	:: launch the game and the controller
	copy nul "%keyFile%" >nul
	start "" /b "%~f0" startController 9^>^>%keyFile% 2^>nul ^>nul
	cmd /c "%~f0" startGame 9^<%keyFile% ^<nul
	echo(
	::--------------------------------------------------------------------------------
	:: Upon exit, wait for the controller to close before deleting the temp input file
	:close
	2>nul (>>"%keyFile%" call )||goto :close
	del "%keyFile%"
	exit /b
	::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
	:game
	setlocal disableDelayedExpansion
	title %~nx0
	cls
	::----------------------------
	:: user configurable options
	set "up=W"
	set "down=S"
	set "left=A"
	set "right=D"
	set "width=40" max=99
	set "height=25" max=99
	:: max playing field: (width-2)*(height-2) <= 1365
	::----------------------------
	:: resize the console window
	set /a cols=width+1, lines=height+10, area=(width-2)*(height-2)
	if %area% gtr 1365 (
	echo ERROR: Playfield area too large
	>"%cmdFile%" (echo quit)
	exit
	)
	if %lines% lss 14 set lines=14
	if %cols% lss 46 set cols=46
	mode con: cols=%cols% lines=%lines%
	::----------------------------
	:: define variables
	set "spinner1=-"
	set "spinner2=\"
	set "spinner3=|"
	set "spinner4=/"
	set "spinner= spinner1 spinner2 spinner3 spinner4 "
	set "space= "
	set "bound=#"
	set "food=+"
	set "head=@"
	set "body=O"
	set "death=X"
	set "playerSpace=%space%%food%"
	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 "delay1=20"
	set "delay2=15"
	set "delay3=10"
	set "delay4=7"
	set "delay5=5"
	set "delay6=3"
	set "delay0=0"
	set "desc1=Sluggard"
	set "desc2=Crawl"
	set "desc3=Slow"
	set "desc4=Normal"
	set "desc5=Fast"
	set "desc6=Insane"
	set "desc0=Unplayable"
	set "spinnerDelay=3"
	set /a "width-=1, height-=1"
	::---------------------------
	:: define macros
	::define a Line Feed (newline) string (normally only used as !LF!)
	set LF=^
	::Above 2 blank lines are required - do not remove
	::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 ValidKeys
	::: Check for keypress. Only accept keys listed in ValidKeys
	::: Return result in Key variable. Key is undefined if no valid keypress.
	set getKey=%\n%
	for %%# in (1 2) do if %%#==2 (for /f "eol= delims= " %%1 in ("!args!") do (%\n%
	set "validKeys=%%1"%\n%
	set "key="%\n%
	^<^&9 set /p "key="%\n%
	if defined key if "!key!" neq ":" (%\n%
	set /a key-=1%\n%
	for %%K in (!key!) do set "key=!keys:~%%K,1!"%\n%
	)%\n%
	for %%K in (!key!) do if "!validKeys:%%K=!" equ "!validKeys!" set "key="%\n%
	)) else set args=
	:: draw
	::: draws the board
	set draw=%\n%
	cls%\n%
	for /l %%Y in (0,1,%height%) do echo(!line%%Y!%\n%
	echo Speed=!Difficulty!%\n%
	echo Score=!score!
	:: 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
	call :initialize
	::--------------------------------------
	:: main loop (infinite loop)
	for /l %%. in (1 0 1) do (
	%=== 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 ===%
	%=== establish direction ===%
	%getKey% ASDW
	for %%K in (!key!) do 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=!"
	(%test% !X! !Y! food) && (
	%=== moving to food - eat it ===%
	%=== restore the tail ===%
	%plot% !TX! !TY! body
	set "snakeX=!snakeX!!TX!"
	set "snakeY=!snakeY!!TY!"
	%=== increment score and locate and draw new food ===%
	set /a "score+=1, F=(!random!%%(emptyCnt-=1))*6+1"
	for %%F in (!F!) do (%plot% !empty:~%%F,5! food)
	) || (
	%=== moving to empty space ===%
	%=== 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 ===%
	%plot% !TX! !TY! body
	call :spinner !PX! !PY! death
	%draw%
	echo(
	call :ask "Would you like to play again? (Y/N)" YN
	if /i "!key!" equ "N" (
	>"%cmdFile%" (echo quit)
	exit
	) else (
	call :initialize
	)
	)
	set /a t1=t2
	)
	)
	:ask Prompt ValidKeys
	:: Prompt for a keypress. ValidKeys is a list of acceptable keys
	:: Wait until a valid key is pressed and return result in Key variable
	>"%cmdFile%" (echo prompt)
	<nul set /p "=%~1 "
	:purge
	(%getKey% :)
	if not defined key goto :purge
	:getResponse
	(%getKey% %2)
	if not defined key (
	>"%cmdFile%" (echo one)
	goto :getResponse
	)
	exit /b
	: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
	: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
	::-------------------------------------
	:initialize
	cls
	echo Speed Options:
	echo delay
	echo # Description (seconds)
	echo --- ----------- ---------
	echo 1 Snail 0.20
	echo 2 Turtle 0.15
	echo 3 Slow 0.10
	echo 4 Normal 0.07
	echo 5 Rapid 0.05
	echo 6 Frenzy 0.03
	echo 0 Unplayable none
	echo(
	call :ask "Pick a speed (1-6, 0):" 1234560
	set "difficulty=!desc%key%!"
	set "delay=!delay%key%!"
	echo %key% - %difficulty%
	echo(
	<nul set /p "=Initializing."
	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 "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!"
	)
	)
	(%draw%)
	echo(
	echo Movement keys: %up%=up %down%=down %left%=left %right%=right
	echo Avoid running into yourself (%body%%body%%head%) or wall (%bound%)
	echo Eat food (%food%) to grow.
	echo(
	call :ask "Press any alpha-numeric key to start..." %keys%
	>"%cmdFile%" (echo go)
	exit /b
	::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
	:controller
	setlocal enableDelayedExpansion
	set "cmd=hold"
	set "key="
	for /l %%. in (1 0 1) do (
	if "!cmd!" neq "hold" (
	%choice% /n /c:!keys!
	set "key=!errorlevel!"
	)
	if exist "%cmdFile%" (
	<"%cmdFile%" set /p "cmd="
	del "%cmdFile%"
	)
	if "!cmd!" equ "quit" exit
	if defined key (
	if "!cmd!" equ "prompt" >&9 (echo :)
	>&9 (echo !key!)
	if "!cmd!" neq "go" set "cmd=hold"
	set "key="
	)
	)