| Apache/2.4.7 (Ubuntu) Linux sman1baleendah 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 uid=33(www-data) gid=33(www-data) groups=33(www-data) safemode : OFF MySQL: ON | Perl: ON | cURL: OFF | WGet: ON > / usr / share / doc / gawk / examples / network / | server ip : 172.67.156.115 your ip : 172.71.254.132 H O M E |
| Filename | /usr/share/doc/gawk/examples/network/maze.awk |
| Size | 2.59 kb |
| Permission | rw-r--r-- |
| Owner | root : root |
| Create time | 27-Apr-2025 09:55 |
| Last modified | 29-Mar-2012 04:03 |
| Last accessed | 08-Jul-2025 00:24 |
| Actions | edit | rename | delete | download (gzip) |
| View | text | code | image |
function SetUpServer() {
TopHeader = "<HTML><title>Walk through a maze</title>"
TopDoc = "\
<h2>Please choose one of the following actions:</h2>\
<UL>\
<LI><A HREF=" MyPrefix "/AboutServer>About this server</A>\
<LI><A HREF=" MyPrefix "/VRMLtest>Watch a simple VRML scene</A>\
</UL>"
TopFooter = "</HTML>"
srand()
}
function HandleGET() {
if (MENU[2] == "AboutServer") {
Document = "If your browser has a VRML 2 plugin,\
this server shows you a simple VRML scene."
} else if (MENU[2] == "VRMLtest") {
XSIZE = YSIZE = 11 # initially, everything is wall
for (y = 0; y < YSIZE; y++)
for (x = 0; x < XSIZE; x++)
Maze[x, y] = "#"
delete Maze[0, 1] # entry is not wall
delete Maze[XSIZE-1, YSIZE-2] # exit is not wall
MakeMaze(1, 1)
Document = "\
#VRML V2.0 utf8\n\
Group {\n\
children [\n\
PointLight {\n\
ambientIntensity 0.2\n\
color 0.7 0.7 0.7\n\
location 0.0 8.0 10.0\n\
}\n\
DEF B1 Background {\n\
skyColor [0 0 0, 1.0 1.0 1.0 ]\n\
skyAngle 1.6\n\
groundColor [1 1 1, 0.8 0.8 0.8, 0.2 0.2 0.2 ]\n\
groundAngle [ 1.2 1.57 ]\n\
}\n\
DEF Wall Shape {\n\
geometry Box {size 1 1 1}\n\
appearance Appearance { material Material { diffuseColor 0 0 1 } }\n\
}\n\
DEF Entry Viewpoint {\n\
position 0.5 1.0 5.0\n\
orientation 0.0 0.0 -1.0 0.52\n\
}\n"
for (i in Maze) {
split(i, t, SUBSEP)
Document = Document " Transform { translation "
Document = Document t[1] " 0 -" t[2] " children USE Wall }\n"
}
Document = Document " ] # end of group for world\n}"
Reason = "OK" ORS "Content-type: model/vrml"
Header = Footer = ""
}
}
function MakeMaze(x, y) {
delete Maze[x, y] # here we are, we have no wall here
p = 0 # count unvisited fields in all directions
if (x-2 SUBSEP y in Maze) d[p++] = "-x"
if (x SUBSEP y-2 in Maze) d[p++] = "-y"
if (x+2 SUBSEP y in Maze) d[p++] = "+x"
if (x SUBSEP y+2 in Maze) d[p++] = "+y"
if (p>0) { # if there are unvisited fields, go there
p = int(p*rand()) # choose one unvisited field at random
if (d[p] == "-x") { delete Maze[x - 1, y]; MakeMaze(x - 2, y)
} else if (d[p] == "-y") { delete Maze[x, y - 1]; MakeMaze(x, y - 2)
} else if (d[p] == "+x") { delete Maze[x + 1, y]; MakeMaze(x + 2, y)
} else if (d[p] == "+y") { delete Maze[x, y + 1]; MakeMaze(x, y + 2)
} # we are back from recursion
MakeMaze(x, y); # try again while there are unvisited fields
}
}
TopHeader = "<HTML><title>Walk through a maze</title>"
TopDoc = "\
<h2>Please choose one of the following actions:</h2>\
<UL>\
<LI><A HREF=" MyPrefix "/AboutServer>About this server</A>\
<LI><A HREF=" MyPrefix "/VRMLtest>Watch a simple VRML scene</A>\
</UL>"
TopFooter = "</HTML>"
srand()
}
function HandleGET() {
if (MENU[2] == "AboutServer") {
Document = "If your browser has a VRML 2 plugin,\
this server shows you a simple VRML scene."
} else if (MENU[2] == "VRMLtest") {
XSIZE = YSIZE = 11 # initially, everything is wall
for (y = 0; y < YSIZE; y++)
for (x = 0; x < XSIZE; x++)
Maze[x, y] = "#"
delete Maze[0, 1] # entry is not wall
delete Maze[XSIZE-1, YSIZE-2] # exit is not wall
MakeMaze(1, 1)
Document = "\
#VRML V2.0 utf8\n\
Group {\n\
children [\n\
PointLight {\n\
ambientIntensity 0.2\n\
color 0.7 0.7 0.7\n\
location 0.0 8.0 10.0\n\
}\n\
DEF B1 Background {\n\
skyColor [0 0 0, 1.0 1.0 1.0 ]\n\
skyAngle 1.6\n\
groundColor [1 1 1, 0.8 0.8 0.8, 0.2 0.2 0.2 ]\n\
groundAngle [ 1.2 1.57 ]\n\
}\n\
DEF Wall Shape {\n\
geometry Box {size 1 1 1}\n\
appearance Appearance { material Material { diffuseColor 0 0 1 } }\n\
}\n\
DEF Entry Viewpoint {\n\
position 0.5 1.0 5.0\n\
orientation 0.0 0.0 -1.0 0.52\n\
}\n"
for (i in Maze) {
split(i, t, SUBSEP)
Document = Document " Transform { translation "
Document = Document t[1] " 0 -" t[2] " children USE Wall }\n"
}
Document = Document " ] # end of group for world\n}"
Reason = "OK" ORS "Content-type: model/vrml"
Header = Footer = ""
}
}
function MakeMaze(x, y) {
delete Maze[x, y] # here we are, we have no wall here
p = 0 # count unvisited fields in all directions
if (x-2 SUBSEP y in Maze) d[p++] = "-x"
if (x SUBSEP y-2 in Maze) d[p++] = "-y"
if (x+2 SUBSEP y in Maze) d[p++] = "+x"
if (x SUBSEP y+2 in Maze) d[p++] = "+y"
if (p>0) { # if there are unvisited fields, go there
p = int(p*rand()) # choose one unvisited field at random
if (d[p] == "-x") { delete Maze[x - 1, y]; MakeMaze(x - 2, y)
} else if (d[p] == "-y") { delete Maze[x, y - 1]; MakeMaze(x, y - 2)
} else if (d[p] == "+x") { delete Maze[x + 1, y]; MakeMaze(x + 2, y)
} else if (d[p] == "+y") { delete Maze[x, y + 1]; MakeMaze(x, y + 2)
} # we are back from recursion
MakeMaze(x, y); # try again while there are unvisited fields
}
}