I don't have any immediate plans to port Velocity Raptor over, though. It would take an entire rebuild of the game.

I wanted to let the bullets have different speeds to change the 'strength' of the relativistic effects. For example, making the ones in level 9 move really, really fast so you couldn't pass through them without using a little relativistic trick.

It works pretty well, but I imagine using one of the methods you listed would be a lot faster. Thanks for sharing them, I'll keep them in mind for a possible upgrade to the game.

One player made a quasi-"light clock" using the bullets, and another made a whole sequence of levels about the see-all seal that may as well be canon :)

So from a technical perspective, the acceleration isn't infinite, since it happens over the course of a single frame. Of course, that reveals one of the odd parts about having discrete time-steps (frame, frame, frame) instead of continuous time.

Practically, the acceleration it would take to stop you that suddenly would indeed be immense, and certainly the forces would be enough to tear a normal velociraptor's claws right off her feet. (Luckily, VR is no normal raptor)

If you do want to be able to see the acceleration, you can always use the arrow keys to slow down... or hold down an arrow key as you hit the spacebar (that decreases the 'braking' acceleration)

You're absolutely right about the colors. Right now, the color-blocks only show what would happen to the wavelength (which gets 'black' as you head into UV), not the brightness. There are so many effects, which can get confusing if all presented at the same time, so I had to pick and choose which I'd represent.

That said, I really should have added levels that dealt with the brightness. It's a cool effect, too, dammit! I'll keep that in mind.

About the doors, if you're noticing what I think you're noticing, a quick explanation... Put shortly: in their rest frame, they open/shut simultaneously. But to the moving raptor, those 'simultaneous' moments happen at different times. Which is why the raptor feels like she can fit through a pair of doors that are otherwise too close together - there is a period of time (in her frame) that the doors are both open, letting her through.

a) Raptors are the cleverest of animals, with an uncanny ability to understand relativity. b) I am obsessed with Jurassic Park and couldn't pass up a good pun.

So, you know. One of those two.

I'm happy to answer any questions/take feedback/suggestions.

Oh, and __m: I can't reveal VR's secret identity... what if Professor Rex found out? Could spell certain disaster.