Shell写的贪吃蛇游戏

飞灰橙

忙一下午，终于出来了 :wink:
在我的redhat8.0上运行通过。
游戏键：
    上：w, i
      下：s, k
      左：a, j
      右：d, l
      退出：q

1. 
   
2. #!/bin/bash
   
3. 
   
4. function DetectInput
   
5. {
   
6.         while [[ 1 ]]
   
7.         do
   
8.                 c=""
   
9.                 read -n 1 c
   
10.                 echo -ne "\r          \r"
    
11.                 if [[ $c == "a" || $c == "j" || $c == "A" || $c == "J" ]]
    
12.                 then
    
13.                         kill -36 $pidShowSnake
    
14.                 elif [[ $c == "w" || $c == "i" || $c == "W" || $c == "I" ]]
    
15.                 then
    
16.                         kill -37 $pidShowSnake
    
17.                 elif [[ $c == "d" || $c == "l" || $c == "D" || $c == "L" ]]
    
18.                 then
    
19.                         kill -38 $pidShowSnake
    
20.                 elif [[ $c == "s" || $c == "k" || $c == "S" || $c == "K" ]]
    
21.                 then
    
22.                         kill -39 $pidShowSnake
    
23.                 elif [[ $c == "q" || $c == "Q" ]]
    
24.                 then
    
25.                         echo Quit.
    
26.                         kill -40 $pidShowSnake
    
27.                         exit
    
28.                 fi
    
29.         done
    
30. }
    
31. 
    
32. function AllExit
    
33. {
    
34.         kill -40 $pidShowSnake
    
35.         exit
    
36. }
    
37. 
    
38. if [[ $1 != "--showsnake" ]]
    
39. then
    
40.         eval $0" --showsnake "$$"&"
    
41.         trap "exit" TERM
    
42.         trap "AllExit" INT
    
43.         pidShowSnake=$!
    
44.         DetectInput
    
45.         exit
    
46. else
    
47.         pidCtlSnake=$2
    
48. fi
    
49. 
    
50. echo sub
    
51. 
    
52. 
    
53. iSpeed=500        #time interval in millisecond
    
54. iDirection=0        #1-left, 2-up, 3-right, 4-down
    
55. iWidth=15
    
56. iHeight=15
    
57. iX=(6 7 8)
    
58. iY=(7 7 7)
    
59. iMap=()
    
60. iS=0        #Start pointer in iX
    
61. 
    
62. (( iTotalBox = iWidth * iHeight ))
    
63. for (( i = 0; i < iTotalBox; i++ ))
    
64. do
    
65.         (( iMap[$i] = 0 ))
    
66. done
    
67. 
    
68. function RandomHeader
    
69. {
    
70.         (( iNew = RANDOM % ( iTotalBox - ${#iX[@]} ) ))
    
71.         for (( iNewP = 0, i = 0; iNewP < iTotalBox && i < iNew; iNewP++))
    
72.         do
    
73.                 if (( ${iMap[$iNewP]} != 1 )); then (( i++ )); fi
    
74.         done
    
75.         while (( ${iMap[$iNewP]} == 1 )); do (( iNewP++ )); done
    
76. 
    
77.         (( iNewX = iNewP % iWidth ))
    
78.         (( iNewY = (iNewP - iNewX) / iWidth ))
    
79. 
    
80.         echo -ne "\33[1m\33[35m"
    
81.         (( pX = 2 * iNewX + iLeft + 1 ))
    
82.         (( pY = iNewY + iTop + 1 ))
    
83.         echo -ne "\33["$pY";"$pX"H[]"
    
84.         echo -ne "\33["$iCursor";1H"
    
85.         echo -ne "\33[0m"
    
86.                
    
87. }
    
88. 
    
89. function InitDraw
    
90. {
    
91.         clear
    
92.        
    
93.         (( iTop = 1 ))
    
94.         (( iBottom = iTop + iHeight + 1 ))
    
95.         (( iLeft = 1 ))
    
96.         (( iRight = iLeft + iWidth + iWidth + 1 ))
    
97.         (( iCursor = iBottom + 1 ))
    
98.        
    
99.         echo -ne "\33[1m\33[32m"
    
100.         for (( i = iLeft + 1; i < iWidth + iWidth + iLeft + 1; i++ ))
     
101.         do
     
102.                 echo -ne "\33["$iTop";"$i"H="
     
103.                 echo -ne "\33["$iBottom";"$i"H="
     
104.         done
     
105.         for (( i = iTop; i < iHeight + iTop + 2; i++ ))
     
106.         do
     
107.                 echo -ne "\33["$i";"$iLeft"H|"
     
108.                 echo -ne "\33["$i";"$iRight"H|"
     
109.         done
     
110.         echo -ne "\33["$iCursor";1H"
     
111.         echo -ne "\33[0m"
     
112. 
     
113.         echo -ne "\33[1m\33[33m"
     
114.         for (( i = 0; i < ${#iX[@]}; i++ ))
     
115.         do
     
116.                 (( pX = 2 * ${iX[$i]} + iLeft + 1 ))
     
117.                 (( pY = ${iY[$i]} + iTop + 1 ))
     
118.                 (( pM = ${iY[$i]} * iWidth + ${iX[$i]} ))
     
119.                 (( iMap[$pM] = 1 ))
     
120.                 echo -ne "\33["$pY";"$pX"H[]"
     
121.                 #echo ${iX[$i]}
     
122.         done
     
123.         echo -ne "\33["$iCursor";1H"
     
124.         echo -ne "\33[0m"
     
125.        
     
126.         RandomHeader
     
127. }
     
128. 
     
129. 
     
130. function ShiftSnake
     
131. {
     
132.         (( iLastP = iS - 1 ))
     
133.         if (( iLastP < 0 )); then ((iLastP = ${#iX[@]} - 1 )); fi
     
134.                
     
135.         if (( iDir == 1 ))        #left
     
136.         then
     
137.                 (( iHX = ${iX[$iLastP]} - 1 ))
     
138.                 (( iHY = ${iY[$iLastP]} ))
     
139.         elif (( iDir == 2 ))        #up
     
140.         then
     
141.                 (( iHX = ${iX[$iLastP]} ))
     
142.                 (( iHY = ${iY[$iLastP]} - 1 ))
     
143.         elif (( iDir == 3 ))        #right
     
144.         then
     
145.                 (( iHX = ${iX[$iLastP]} + 1 ))
     
146.                 (( iHY = ${iY[$iLastP]} ))
     
147.         elif (( iDir == 4 ))        #down
     
148.         then
     
149.                 (( iHX = ${iX[$iLastP]} ))
     
150.                 (( iHY = ${iY[$iLastP]} + 1 ))       
     
151.         fi
     
152.        
     
153.         bOver=0
     
154.         if (( iHX < 0 || iHY < 0 || iHX >= iWidth || iHY >= iHeight )); then bOver=1;fi
     
155.         if (( bOver == 0 )); then
     
156.                 if (( ${iMap[iHY * iWidth + iHX]} == 1 )); then        bOver=1; fi
     
157.         fi
     
158. 
     
159.         if (( bOver == 1 ))
     
160.         then
     
161.                 kill $pidCtlSnake
     
162.                 (( iBottom = iBottom + 1 ))
     
163.                 echo -e "\33["$iBottom";0HGame over! (Score: "${#iX[@]}"00)\33[0m"
     
164.                 exit 0;
     
165.         fi
     
166.        
     
167.        
     
168.         #check if catch the new box
     
169.         if (( iHX == iNewX && iHY == iNewY ))
     
170.         then
     
171.                 for (( i = ${#iX[@]}; i > iS; i-- ))
     
172.                 do
     
173.                         (( iX[$i] = ${iX[$i - 1]} ))
     
174.                         (( iY[$i] = ${iY[$i - 1]} ))
     
175.                 done
     
176.                 (( iX[$iS] = iHX ))
     
177.                 (( iY[$iS] = iHY ))
     
178. 
     
179.                 (( iNextP = iS + 1 ))
     
180.                 if (( iNextP >= ${#iX[@]} )); then iNextP=0; fi       
     
181.                
     
182.                 echo -ne "\a"
     
183.                 RandomHeader
     
184.         else
     
185.                 (( iNextP = iS + 1 ))
     
186.                 if (( iNextP >= ${#iX[@]} )); then iNextP=0; fi       
     
187.        
     
188.                 #clear snake tailer
     
189.                 (( pX = 2 * ${iX[$iS]} + iLeft + 1 ))
     
190.                 (( pY = ${iY[$iS]} + iTop + 1 ))
     
191.                 (( pM = ${iY[$iS]} * iWidth + ${iX[$iS]} ))
     
192.                 (( iMap[$pM] = 0 ))
     
193.                 echo -ne "\33["$pY";"$pX"H  "
     
194.                 (( iX[$iS] = iHX ))
     
195.                 (( iY[$iS] = iHY ))
     
196. 
     
197.         fi
     
198. 
     
199.         #draw snake header
     
200.         echo -ne "\33[1m\33[33m"
     
201.         (( pX = 2 * iHX + iLeft + 1 ))
     
202.         (( pY = iHY + iTop + 1 ))
     
203.         (( pM = iHY * iWidth + iHX ))
     
204.         (( iMap[$pM] = 1 ))
     
205.         echo -ne "\33["$pY";"$pX"H[]"
     
206.         echo -ne "\33["$iCursor";1H"
     
207.         echo -ne "\33[0m"
     
208. 
     
209.         (( iS = iNextP ))
     
210. }
     
211. 
     
212. trap "if (( iDir != 3 && iDir != 0 )); then iDirection=1; fi" 36
     
213. trap "if (( iDir != 4 )); then iDirection=2; fi" 37
     
214. trap "if (( iDir != 1 )); then iDirection=3; fi" 38
     
215. trap "if (( iDir != 2 )); then iDirection=4; fi" 39
     
216. trap "exit" 40
     
217. 
     
218. InitDraw
     
219. 
     
220. (( iNanoSec = iSpeed * 1000000 ))
     
221. iTime="1"`date +"%S%N"`
     
222. while [[ 1 ]]
     
223. do
     
224.         usleep 100000
     
225.         iTimeNew="1"`date +"%S%N"`
     
226.        
     
227.         #avoid iTimeNew < iTime when new minute comes
     
228.         if (( iTimeNew < iTime ))
     
229.         then
     
230.                 (( iTime = iTime - 60000000000 ))
     
231.         fi
     
232.        
     
233.         #detect the time interval
     
234.         if (( iTimeNew - iTime < iNanoSec )); then continue; fi
     
235.         iTime=$iTimeNew
     
236.                
     
237.         iDir=$iDirection
     
238.        
     
239.         if (( iDir != 0 ))
     
240.         then
     
241.                 ShiftSnake
     
242.         fi
     
243. done
     
244. 
     

复制代码

admirer

naitai2004

厉害!!

ohwww

我怎么运行不了呢？
在函数function AllExit()和function RandomHeader()之间的那段代码是什么意思？

ohwww

一运行就这样：
sub

|==============================|
|                              |
|                              |
|                              |
|                              |
|                              |
|                              |
|                              |
|            [][][]./snake: != 1 : syntax error: operand expected (error token is "!= 1 "
./snake: != 1 : syntax error: operand expected (error token is "!= 1 "
./snake: != 1 : syntax error: operand expected (error token is "!= 1 "
./snake: != 1 : syntax error: operand expected (error token is "!= 1 "
./snake: != 1 : syntax error: operand expected (error token is "!= 1 "
./snake: != 1 : syntax error: operand expected (error token is "!= 1 "
./snake: != 1 : syntax error: operand expected (error token is "!= 1 "
./snake: != 1 : syntax error: operand expected (error token is "!= 1 "
./snake: != 1 : syntax error: operand expected (error token is "!= 1 "
./snake: != 1 : syntax error: operand expected (error token is "!= 1 "
./snake: != 1 : syntax error: operand expected (error token is "!= 1 ")
./snake: ((: 111%N: division by 0 (error token is "N")token is "!= 1 ")
./snake: ((: 111%N: division by 0 (error token is "N")token is "!= 1 ")
./snake: ((: 111%N: division by 0 (error token is "N")token is "!= 1 ")
./snake: ((: 111%N: division by 0 (error token is "N")token is "!= 1 ")
./snake: ((: 111%N: division by 0 (error token is "N")token is "!= 1 ")
./snake: ((: 111%N: division by 0 (error token is "N")token is "!= 1 ")
./snake: ((: 111%N: division by 0 (error token is "N")token is "!= 1 ")
./snake: ((: 111%N: division by 0 (error token is "N")token is "!= 1 ")
./snake: ((: 111%N: division by 0 (error token is "N")token is "!= 1 ")
./snake: ((: 111%N: division by 0 (error token is "N")
./snake: ((: 112%N: division by 0 (error token is "N")
./snake: ((: 112%N: division by 0 (error token is "N")
./snake: ((: 112%N: division by 0 (error token is "N")
./snake: ((: 112%N: division by 0 (error token is "N")
./snake: ((: 112%N: division by 0 (error token is "N")
./snake: ((: 112%N: division by 0 (error token is "N")
./snake: ((: 112%N: division by 0 (error token is "N")

./snake: ((: 112%N: division by 0 (error token is "N")

飞灰橙

刚才修改了一下，解决了退出后屏幕变乱的问题。

我在linux8.0 + bash上调试的，
你的运行环境是什么，我去试一下。

kkng09

很好,由其是編程的巧妙, 利用kill singal和trap 完成輸入的控制, 不錯不錯.

飞灰橙

在函数function AllExit()和function RandomHeader()之间的那段代码是什么意思？

是这么想的：
根据命令行参数的不同，把这个shell作为两个程序运行。
一个用于读取键盘输入，
并向另一个发送36-40的信号，
通知他上下左右和退出的消息。
另一个是贪吃蛇的主执行程序。

smileinwind

在solaris 8上运行，报read命令错误
tanchishe: read: illegal option: -n
read: usage: read [-r] [-p prompt] [-a array] [-e] [name ...]

binary

[quote]原帖由 "smileinwind"]][/quote 发表：


这应该是bash的用法，solaris 8有bash吗？我没有找到啊