125 lines
3.4 KiB
HTML
125 lines
3.4 KiB
HTML
|
<html>
|
||
|
|
<head>
|
||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
|
||
|
|
<title>FlightGear: Remote control</title>
|
||
|
|
<meta name="Author" content="Melchior FRANZ">
|
||
|
|
<meta name="KeyWords" content="flightgear,fgfs,flightsimulator,simulator,remote,control,perl,c,c++">
|
||
|
|
<link rel="StyleSheet" type="text/css" href="fgfs.css">
|
||
|
|
<link rel="SHORTCUT ICON" href="mf.ico">
|
||
|
|
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body>
|
||
|
|
<h1>FlightGear: Remote control</h1>
|
||
|
|
|
||
|
|
|
||
|
|
<p>FlightGear has several interfaces that provide access to internal
|
||
|
|
parameters. The HTTP interface is best suited for human interaction
|
||
|
|
via a web browser. The telnet interface is the ideal choice for
|
||
|
|
remotely controlling FlightGear by means of external programs.
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<p>To activate FlightGear's telnet server capabilities, call it with
|
||
|
|
a <em>--props</em> specifiaction:
|
||
|
|
|
||
|
|
<blockquote>
|
||
|
|
<pre>
|
||
|
|
$ fgfs --props=socket,bi,5,localhost,5501,tcp
|
||
|
|
</pre>
|
||
|
|
|
||
|
|
<br>
|
||
|
|
<br>
|
||
|
|
<table>
|
||
|
|
<tr><td><strong>socket:</strong></td><td>FlightGear protocol</td></tr>
|
||
|
|
<tr><td><strong>bi:</strong></td><td>bidirectional</td></tr>
|
||
|
|
<tr><td><strong>5:</strong></td><td>polling frequency in Hertz</td></tr>
|
||
|
|
<tr><td><strong>localhost: </strong></td><td>server name or IP-address</td></tr>
|
||
|
|
<tr><td><strong>5501: </strong></td><td>server port</td></tr>
|
||
|
|
<tr><td><strong>tcp:</strong></td><td>internet protocol type</td></tr>
|
||
|
|
</table>
|
||
|
|
</blockquote>
|
||
|
|
|
||
|
|
<br>
|
||
|
|
<br>
|
||
|
|
In newer versions of FlightGear just type:
|
||
|
|
<blockquote>
|
||
|
|
<pre>
|
||
|
|
$ fgfs --telnet=5501
|
||
|
|
</pre>
|
||
|
|
</blockquote>
|
||
|
|
</p>
|
||
|
|
|
||
|
|
<p>To learn more about the supported commands, connect to FlightGear
|
||
|
|
with a telnet program and type in "help<RETURN>". This is what you'll get:<p>
|
||
|
|
|
||
|
|
<blockquote>
|
||
|
|
<pre>
|
||
|
|
$ telnet localhost 5501
|
||
|
|
Trying ::1...
|
||
|
|
Trying 127.0.0.1...
|
||
|
|
Connected to localhost.
|
||
|
|
Escape character is '^]'.
|
||
|
|
help
|
||
|
|
|
||
|
|
Valid commands are:
|
||
|
|
|
||
|
|
help show help message
|
||
|
|
ls [<dir>] list directory
|
||
|
|
dump dump current state (in xml)
|
||
|
|
cd <dir> cd to a directory, '..' to move back
|
||
|
|
pwd display your current path
|
||
|
|
get <var> show the value of a parameter
|
||
|
|
show <var> synonym for get
|
||
|
|
set <var> <val> set <var> to a new <val>
|
||
|
|
data switch to raw data mode
|
||
|
|
prompt switch to interactive mode (default)
|
||
|
|
quit terminate connection
|
||
|
|
|
||
|
|
/>
|
||
|
|
</pre>
|
||
|
|
</blockquote>
|
||
|
|
|
||
|
|
<p>Now you can browse in the property system like in a Linux file
|
||
|
|
system with <em>cd, ls, pwd</em>.</p>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
<p>Here you can <a href="fgfsscript">download a sample script</a>
|
||
|
|
written in Perl, that shows how to access and manipulate FlightGear's
|
||
|
|
internal parameters. It can be started before FlightGear (in which
|
||
|
|
case it tries up to 2 minutes to connect) or afterwards. Then
|
||
|
|
it picks a random AGL altitude and checks every 5 seconds
|
||
|
|
if the aircraft has already climbed at this height. Now it starts
|
||
|
|
to empty all four tanks, one after the other, until the engines
|
||
|
|
stop working. Try to find a place where you can land safely. :-)</p>
|
||
|
|
|
||
|
|
<blockquote>
|
||
|
|
<pre>
|
||
|
|
$ fgfsscript&
|
||
|
|
$ fgfs --props=socket,bi,5,localhost,5501,tcp
|
||
|
|
</pre>
|
||
|
|
</blockquote>
|
||
|
|
|
||
|
|
<p>The script defaults to <em>localhost</em> and <em>port 5501</em>,
|
||
|
|
but you can let the script control FlightGear on another host and
|
||
|
|
under another port.</p>
|
||
|
|
|
||
|
|
<blockquote>
|
||
|
|
<pre>
|
||
|
|
$ fgfsscript some.host.org 1234&
|
||
|
|
</pre>
|
||
|
|
</blockquote>
|
||
|
|
|
||
|
|
|
||
|
|
<p>Demo programs are available in:<br>
|
||
|
|
<ul>
|
||
|
|
<li><a href="fgfsclient.c">C</a></li>
|
||
|
|
<li><a href="fgfsclient.cxx">C++</a></li>
|
||
|
|
<li><a href="fgfsscript">Perl (same as mentioned above)</a></li>
|
||
|
|
</ul>
|
||
|
|
</p>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|