167 lines
3.5 KiB
Text
167 lines
3.5 KiB
Text
# Multiplayer Chat
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# ================
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#
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# 1) Display chat messages from other aircraft to
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# the screen using screen.nas
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#
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# 2) Display a complete history of chat via dialog.
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#
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# 3) Allow chat messages to be written by the user.
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var messages = {};
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var check_messages = func
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{
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var mp = props.globals.getNode("/ai/models").getChildren("multiplayer");
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var lseen = {};
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foreach (i; mp)
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{
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var lmsg = getprop(i.getPath() ~ "/sim/multiplay/chat");
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var lcallsign = getprop(i.getPath() ~ "/callsign");
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var lvalid = getprop(i.getPath() ~ "/valid");
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if ((lvalid) and
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(lmsg != nil) and
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(lmsg != "") and
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(lcallsign != nil) and
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(lcallsign != ""))
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{
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#print("Call Sign: " ~ lcallsign);
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#print("lmsg: " ~ lmsg);
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#print("Freq: " ~ ltransmitfreq);
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if (! contains(lseen, lcallsign))
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{
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# Indicate that we've seen this callsign. This handles the case
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# where we have two aircraft with the same callsign in the MP
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# session.
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lseen[lcallsign] = 1;
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if ((! contains(messages, lcallsign)) or
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(! streq(lmsg, messages[lcallsign])))
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{
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# Save the message so we don't repeat it.
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messages[lcallsign] = lmsg;
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# Display the message.
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echo_message(lmsg, lcallsign);
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}
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}
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}
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}
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# Check for new messages every couple of seconds.
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settimer(check_messages, 3);
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}
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var echo_message = func(msg, callsign)
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{
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if (callsign != nil)
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{
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msg = callsign ~ ": " ~ msg;
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}
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var ldisplay = getprop("/sim/multiplay/chat-display");
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if ((ldisplay != nil) and (ldisplay == "1"))
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{
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# Only display the message to screen if configured.
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setprop("/sim/messages/ai-plane", msg);
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}
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# Add the chat to the chat history.
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var lchat = getprop("/sim/multiplay/chat-history");
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if (lchat == nil)
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{
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setprop("/sim/multiplay/chat-history", msg);
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}
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else
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{
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if (substr(lchat, size(lchat) -1, 1) != "\n")
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{
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lchat = lchat ~ "\n";
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}
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setprop("/sim/multiplay/chat-history", lchat ~ msg);
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}
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}
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settimer(func {
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# Call-back to ensure we see our own messages.
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setlistener("/sim/multiplay/chat", func(n) { echo_message(n.getValue(), getprop("/sim/multiplay/callsign")); });
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# check for new messages
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check_messages();
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}, 1);
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# Message composition function, activated using the - key.
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var prefix = "Chat Message:";
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var input = "";
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var kbdlistener = nil;
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var compose_message = func(msg = "")
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{
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input = prefix ~ msg;
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gui.popupTip(input, 1000000);
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kbdlistener = setlistener("/devices/status/keyboard/event", func (event) {
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var key = event.getNode("key");
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# Only check the key when pressed.
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if (!event.getNode("pressed").getValue())
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return;
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if (handle_key(key.getValue()))
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key.setValue(0); # drop key event
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});
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}
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var handle_key = func(key)
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{
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if (key == `\n` or key == `\r`)
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{
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# CR/LF -> send the message
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# Trim off the prefix
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input = substr(input, size(prefix));
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# Send the message and switch off the listener.
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setprop("/sim/multiplay/chat", input);
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removelistener(kbdlistener);
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gui.popdown();
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return 1;
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}
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elsif (key == 8)
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{
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# backspace -> remove a character
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if (size(input) > size(prefix))
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{
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input = substr(input, 0, size(input) - 1);
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gui.popupTip(input, 1000000);
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return 1;
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}
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}
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elsif (key == 27)
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{
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# escape -> cancel
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removelistener(kbdlistener);
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gui.popdown();
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return 1;
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}
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elsif ((key > 31) and (key < 128))
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{
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# Normal character - add it to the input
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input ~= chr(key);
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gui.popupTip(input, 1000000);
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return 1;
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}
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else
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{
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# Unknown character - pass through
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return 0;
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}
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}
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