What a cryptic error message, yeah? Good grief! Thanks Adobe! Googling didn’t come up with very much, either.
Turned out I was passing two constant registers to an operation.
So basically, in order to compare two temporary registers, you have to copy one of them to a temporary register first.
This code failed in my vertex shader:
ife vc7.x, vc5.x
But this code works:
mov vt1, vc7
ife vt1.x, vc5.x
Go figure. Wonder why that is. Solution found on a comment on this article.
This one’s a weird one. Sometimes Flash Builder 4.7 has a problem where weird errors come up in library code (Feathers, usually) that doesn’t have any actual errors in it.
The error raised is the following: com.google.common.collect.ComputationException: java.lang.NullPointerException
The (non-obvious) solution is to find a little button called “Mark Occurrences” in the toolbar and turn it to OFF.
Here’s a picture of what the button looks like when set to OFF:
And here’s what it looks like when set to ON:
Oh, and sometimes restarting Flash Builder doesn’t do it, so sometimes in order to fix it, I have to set mark occurrences to ON, close and restart FB, and then set it to OFF again to get it to work.
More info is available in this post in the Feathers forum here.
I’ve been making games using the Starling Framework, and I’ve been using a lot of tweens. Tweening is a great way to add what I call “juiciness” to a game (I borrowed that term from here). Tweening gives your user interface some animation, and if it’s not used too much, can really make your game more fun.
There’s a whole bunch of different motion types that can be used with tweens. This graphic helps when trying to picture the various tween transition types, or “easing” functions – not just in the Starling framework, but in any other platform.
Graphic originally from here.
