[SOLVED] addMessageListener and Multiple Rooms

[Anatta]

When we define the addMessageListener function we must specify which roomID to listen to. However, when we change rooms, how can we redefine the function to listen to the new roomID instead?

[Anatta]

Ah nevermind, I figured it out. It had to list all the rooms I wanted to listen for in the addMessageListener as an array.

[colin]

hi anatta,
yes, you're correct, MessageManager's addMessageListener() method lets you specify a central listener for messages targeted at any number of rooms via the forRoomIDs parameter. for example, the following code registers someListener() to be invoked whenever "SOME_MESSAGE" is received by either room1 or room2:

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messageManager().addMessageListener("SOME_MESSAGE",
                                   someListener,
                                   ["room1", "room2"]);


alternatively, if you want to migrate a listener as the current client joins and leaves rooms, you could do:

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room1.addMessageListener("SOME_MESSAGE", someListener);

then later:

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room1.removeMessageListener("SOME_MESSAGE", someListener);
room2.addMessageListener("SOME_MESSAGE", someListener);


you might be interested to know that:

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room1.addMessageListener("SOME_MESSAGE", someListener);

is just a convenient version of:

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messageManager().addMessageListener("SOME_MESSAGE",
                                   someListener,
                                   ["room1"]);


interally, Room's addMessageListener() actually invokes MessageManager's addMessageListener().

thanks for following up on your own post!

colin