貪吃蛇

這個是用shell腳步寫的貪吃蛇，覺的好就放在上面了。這個是我的同學寫的

#!/bin/bash

function DetectInput
{
while [[ 1 ]]; do

  c=""
  read -n 1 c
  echo -ne "\r \r"

  if [[ $c == "a" || $c == "j" || $c == "A" || $c == "J" ]]; then
    kill -36 $pidShowSnake
  elif [[ $c == "w" || $c == "i" || $c == "W" || $c == "I" ]]; then
    kill -37 $pidShowSnake
  elif [[ $c == "d" || $c == "l" || $c == "D" || $c == "L" ]]; then
    kill -38 $pidShowSnake
  elif [[ $c == "s" || $c == "k" || $c == "S" || $c == "K" ]]; then
    kill -39 $pidShowSnake
  elif [[ $c == "q" || $c == "Q" ]]; then
    echo Quit.
    kill -40 $pidShowSnake
    exit
  fi
done
}

function AllExit
{
  kill -40 $pidShowSnake
  exit
}

if [[ $1 != "--showsnake" ]]; then
  eval $0" --showsnake "$$"&"
  trap "exit" TERM
  trap "AllExit" INT
  pidShowSnake=$!
  DetectInput
  exit
else
  pidCtlSnake=$2
fi

echo sub
iSpeed=500
#time interval in millisecond

iDirection=0
#1-left, 2-up, 3-right, 4-down

iWidth=15
iHeight=15
iX=(6 7 8)
iY=(7 7 7)
iMap=()
iS=0
#Start pointer in iX
(( iTotalBox = iWidth * iHeight ))

for (( i = 0; i < iTotalBox; i++ ))
do
  (( iMap[$i] = 0 ))
done

function RandomHeader
{
  (( iNew = RANDOM % ( iTotalBox - ${#iX[@]} ) ))
  for (( iNewP = 0, i = 0; iNewP < iTotalBox && i < iNew; iNewP++))
  do
    if (( ${iMap[$iNewP]} != 1 )); then (( i++ )); fi
  done

  while (( ${iMap[$iNewP]} == 1 )); do (( iNewP++ )); done
  (( iNewX = iNewP % iWidth ))
  (( iNewY = (iNewP - iNewX) / iWidth ))
  echo -ne "\033[1m\033[35m"
  (( pX = 2 * iNewX + iLeft + 1 ))
  (( pY = iNewY + iTop + 1 ))

  echo -ne "\033["$pY";"$pX"H[]"
  echo -ne "\033["$iCursor";1H"
  echo -ne "\033[0m"
}

function InitDraw
{
  clear

  (( iTop = 1 ))
  (( iBottom = iTop + iHeight + 1 ))
  (( iLeft = 1 ))
  (( iRight = iLeft + iWidth + iWidth + 1 ))
  (( iCursor = iBottom + 1 ))

  echo -ne "\033[1m\033[32m

  for (( i = iLeft + 1; i < iWidth + iWidth + iLeft + 1; i++ )); do
    echo -ne "\033["$iTop";"$i"H="
    echo -ne "\033["$iBottom";"$i"H="
  done

  for (( i = iTop; i < iHeight + iTop + 2; i++ ))
  do
    echo -ne "\033["$i";"$iLeft"H|"
    echo -ne "\033["$i";"$iRight"H|"
  done

  echo -ne "\033["$iCursor";1H"
  echo -ne "\033[0m"
  echo -ne "\033[1m\033[33m"

  for (( i = 0; i < ${#iX[@]}; i++ ))
  do
    (( pX = 2 * ${iX[$i]} + iLeft + 1 ))
    (( pY = ${iY[$i]} + iTop + 1 ))
    (( pM = ${iY[$i]} * iWidth + ${iX[$i]} ))
    (( iMap[$pM] = 1 ))
    echo -ne "\033["$pY";"$pX"H[]"
#echo ${iX[$i]}
  done
  echo -ne "\033["$iCursor";1H"
  echo -ne "\033[0m"

  RandomHeader
}

function ShiftSnake
{
  (( iLastP = iS - 1 ))

  if (( iLastP < 0 )); then ((iLastP = ${#iX[@]} - 1 )); fi

  if (( iDir == 1 )) #left
  then
    (( iHX = ${iX[$iLastP]} - 1 ))
    (( iHY = ${iY[$iLastP]} ))
  elif (( iDir == 2 )) #up
  then
    (( iHX = ${iX[$iLastP]} ))
    (( iHY = ${iY[$iLastP]} - 1 ))
  elif (( iDir == 3 )) #right
  then
    (( iHX = ${iX[$iLastP]} + 1 ))
    (( iHY = ${iY[$iLastP]} ))
  elif (( iDir == 4 )) #down
  then
    (( iHX = ${iX[$iLastP]} ))
    (( iHY = ${iY[$iLastP]} + 1 ))
  fi

  bOver=0

  if (( iHX < 0 || iHY < 0 || iHX >= iWidth || iHY >= iHeight )); then bOver=1;fi
  if (( bOver == 0 )); then
    if (( ${iMap[iHY * iWidth + iHX]} == 1 )); then bOver=1; fi
  fi

  if (( bOver == 1 )); then
    kill $pidCtlSnake
    (( iBottomiBottom = iBottom + 1 ))
    echo -e "\033["$iBottom";0HGame over! (Score: "${#iX[@]}"00)\033[0m"
    exit 0;
  fi

#check if catch the new box
  if (( iHX == iNewX && iHY == iNewY )); then
    for (( i = ${#iX[@]}; i > iS; i-- )); do
      (( iX[$i] = ${iX[$i - 1]} ))
      (( iY[$i] = ${iY[$i - 1]} ))
    done

    (( iX[$iS] = iHX ))
    (( iY[$iS] = iHY ))
    (( iNextP = iS + 1 ))

    if (( iNextP >= ${#iX[@]} )); then iNextP=0; fi
    echo -ne "\a"
    RandomHeader
  else
    (( iNextP = iS + 1 ))

   if (( iNextP >= ${#iX[@]} )); then iNextP=0; fi
   #clear snake tailer
    (( pX = 2 * ${iX[$iS]} + iLeft + 1 ))
    (( pY = ${iY[$iS]} + iTop + 1 ))
    (( pM = ${iY[$iS]} * iWidth + ${iX[$iS]} ))
    (( iMap[$pM] = 0 ))
    echo -ne "\033["$pY";"$pX"H  "
    (( iX[$iS] = iHX ))
    (( iY[$iS] = iHY ))
  fi
#draw snake header
  echo -ne "\033[1m\033[33m"
  (( pX = 2 * iHX + iLeft + 1 ))
  (( pY = iHY + iTop + 1 ))
  (( pM = iHY * iWidth + iHX ))
  (( iMap[$pM] = 1 ))
  echo -ne "\033["$pY";"$pX"H[]"
  echo -ne "\033["$iCursor";1H"
  echo -ne "\033[0m"
  (( iS = iNextP ))
}

trap "if (( iDir != 3 && iDir != 0 )); then iDirection=1; fi" 36
trap "if (( iDir != 4 )); then iDirection=2; fi" 37
trap "if (( iDir != 1 )); then iDirection=3; fi" 38
trap "if (( iDir != 2 )); then iDirection=4; fi" 39
trap "exit" 40

InitDraw

(( iNanoSec = iSpeed * 1000000 ))
iTime="1"`date +"%S%N"`

while [[ 1 ]]; do
  usleep 100000
  iTimeNew="1"`date +"%S%N"`
  #avoid iTimeNew < iTime when new minute comes

  if (( iTimeNew < iTime )); then
    (( iTimeiTime = iTime - 60000000000 ))
  fi
  #detect the time interval

  if (( iTimeNew - iTime < iNanoSec )); then continue; fi

  iTime=$iTimeNew
  iDir=$iDirection

  if (( iDir != 0 )); then
    ShiftSnake
  fi

done