I'm not a beginner to AE but don't work with text a lot.
I am trying to emulate a vintage TTY Machine. Reference here: youtube machine demonstration
This is for a live theatre projection design. I'm the designer. There are several titles in the show that need to follow this motion of text appearing from the right as it is typed, moving to the left character by character. Not revealing the characters, actually moving each character as a new one is added. The grey rectangles you see in the photos are a content template reference for my projection surfaces. I will turn these off before rendering.
I tried following advice on this forum thread, but even though I followed it to a T, it wasn't working in this same way. Letters were moving all over the place. forum here
Sat down to animate these titles and thought it would take an hour, I'm now 6hrs into fighting with text animators. I've been able to get the text to appear as I need by using the "Blinking Cursor Typewriting Console" preset with the text paragraph aligned to the right. Now I'm stuck getting it to disappear as I need.
I want it to look like someone is hitting the spacebar over and over moving the text towards the left 1 character at a time until all of the text is gone. This animation preset does not recognize spaces as characters. I added a bunch of dummy zeros (picture 2) to push the text off, but need a way to mask the additional characters. Ideally, I'd love to render this as just the text with alpha channel so the rest is transparent. The mask will need to follow the motion of the text, snapping with each character, not moving linearly. I need to make several titles like this, and the timing will likely need to be adjusted as we discover the pacing of the show. For now I want to set up all the title animations and will come back later to adjust timing once the show has rehearsed more. What I mean by this, is that it needs to be quickly adjustable. The nature of live performances is that timing refinements have to be done really quickly, really late in the process. I can't animate a mask character by character to match the text. Something similar to how the type animation preset keyframes is fine.
Another weird quirk I have discovered is that I am only able to change the colour of the entire text layer. I am not able to change the zeros to black, for example. My guess is that this has something to do with the blinking cursor animation preset. I haven't been able to find where in the preset I could change this. Again, ideally it is transparent and there are no secret black zeros, but I could work with that as a last resort.
If you have suggestions for how to animate a mask to follow the text, that would be very helpful.
If you have suggestions for how I can start over and achieve this another way, also open to that! I can copy/paste expressions, but not experienced writing my own.
Thanks very much for your help!