Description
Helper class to generate form data to post to web servers using the WWW class.
// Grab a screen shot and upload it to a CGI script.
// The CGI script must be able to hande form uploads.var screenShotURL= "http://www.my-server.com/cgi-bin/screenshot.pl";// Take a screen shot immediately
function Start() {
UploadPNG();
}function UploadPNG() {
// We should only read the screen after all rendering is complete
yield WaitForEndOfFrame(); // Create a texture the size of the screen, RGB24 format
var width = Screen.width;
var height = Screen.height;
var tex = new Texture2D( width, height, TextureFormat.RGB24, false );
// Read screen contents into the texture
tex.ReadPixels( Rect(0, 0, width, height), 0, 0 );
tex.Apply(); // Encode texture into PNG
var bytes = tex.EncodeToPNG();
Destroy( tex ); // Create a Web Form
var form = new WWWForm();
form.AddField("frameCount", Time.frameCount.ToString());
form.AddBinaryData("fileUpload", bytes, "screenShot.png", "image/png"); // Upload to a cgi script
var w = WWW(screenShotURL, form);
yield w;
if (!String.IsNullOrEmpty(w.error))
print(w.error);
else
print("Finished Uploading Screenshot");
}
Here is a sample script that retrieves the high scores stored
in a table in an SQL database.
// This example assumes that the user has entered his name into a
// variable called name
and that score
contains the user's current
// score.var highscore_url = "http://www.my-site.com/highscores.pl";
var playName = "Player 1";
var score = -1;function Start() {
// Create a form object for sending high score data to the server
var form = new WWWForm();
// Assuming the perl script manages high scores for different games
form.AddField( "game", "MyGameName" );
// The name of the player submitting the scores
form.AddField( "playerName", playName );
// The score
form.AddField( "score", score ); // Create a download object
var download = new WWW( highscore_url, form ); // Wait until the download is done
yield download; if(download.error) {
print( "Error downloading: " + download.error );
return;
} else {
// show the highscores
Debug.Log(download.text);
}
}
Here is a sample Perl script that processes the high scores stored
in a table in an SQL database.
#!usr
bin/perl
# The SQL database needs to have a table called highscores
# that looks something like this:
#
# CREATE TABLE highscores (
# game varchar(255) NOT NULL,
# player varchar(255) NOT NULL,
# score integer NOT NULL
# );
#
use strict;
use CGI;
use DBI;# Read form data etc.
my $cgi = new CGI;# The results from the high score script will be in plain text
print $cgi->header("text/plain");my $game = $cgi->param('game');
my $playerName = $cgi->param('playerName');
my $score = $cgi->param('score');exit 0 unless $game; # This parameter is required# Connect to a database
my $dbh = DBI->connect( 'DBI:mysql:databasename', 'username', 'password' )
|| die "Could not connect to database: $DBI::errstr";# Insert the player score if there are any
if( $playerName && $score) {
$dbh->do( "insert into highscores (game, player, score) values(?,?,?)",
undef, $game, $playerName, $score );
}# Fetch the high scores
my $sth = $dbh->prepare(
'SELECT player, score FROM highscores WHERE game=? ORDER BY score desc LIMIT 10' );
$sth->execute($game);
while (my $r = $sth->fetchrow_arrayref) {
print join(':',@$r),"\n"
}