add onCharacterTyped signal in FlxTypeText which will dispatch when t…

[ninjamuffin99]

…he character changes

When FlxTypeText outputs a new character, we dispatch our newly created onCharacterTyped FlxSignal.

This could also be useful in cleaning up some of that update code that runs the sounds for each character.

[Geokureli]

Thoughts on this:

	public final onTextAdded = new FlxTypedSignal<String>();

TBH, I didn't know (default, never) was valid code, final is more typical of things defined once at construction.

I also assume that the type rate can be fast enough that multiple chars can be typed in a single frame, not sure though. but sending the chars will allow people to use custom sounds or logic depending on the character

Lastly, destroy should clear all listeners

[ninjamuffin99]

ah good catch, i think the (default, never) bit is just a random habit i have, using final make sense

[ninjamuffin99]

updated with:

• using final instead of (default, never)
• destroy the signal with FlxDestroyUtil.destroy(onCharacterTyped) in an overridden destroy function

[Geokureli]

Seems odd to dispatch this after onComplete. I also wonder if rather than calling it in two places can we just dispatch it once, immediately after the text is changed

[ninjamuffin99]

I believe that doesn't account for the cursorCharacter, so when the cursor blinks, it will incorrectly dispatch the signal. This signal is meant a bit specifically for when a character is actually added/changed in the FlxTypeText. I think right now FlxTypeText can be cleaned up a bit in general, where these 2 dispatches can become 1 more simply along with other little tidyings

[Vortex2Oblivion]

It would be cool if it was a FlxTypedSignal so you can get the exact character typed easily

[Geokureli]

I don't know if it matters but this exists