pgimeno wrote: ↑Mon Nov 12, 2018 6:28 pm The separating vector is not the bounce direction. It's more like the collision normal, but keep in mind it's not a unit vector.

Try with this: http://mathworld.wolfram.com/Reflection.html

Ah, that explains the 90° angle. Thanks! I shall read up on reflection.

I am trying to implement really basic physics using HC for collision detection, and I seem to have not implemented bouncing correctly. I have a moving ball and a static square, and I am trying to use the separating vector returned by HC.collisions() to change the direction of the ball's velocity so ...

I'd second what everyone else has said, and also add some recommended reading: Finishing a Game by Derek Yu. I haven't finished a game yet myself, but the advice in that article has helped keep me from flailing even more than I do.

I have been working on a framework for a turn-based stealth game off and on for the past year or so (I haven't had much free time), and I thought I'd share my progress. My demo "game" here is what I've been using to test features. It's not a playable game, but shows what little it can do s...

Is it straightforward to build against OpenGL ES on Linux? There are several hobbyist ARM boards with official Linux support that only provide the OpenGL ES 2 profile. (Pretty much anything with a Mali GPU, for example.)

Christchurch, New Zealand

Thanks to everyone for their advice. I have started out using Box2D instead of just bump or HC because I wanted to add silly physics once I had a ball and two paddles. before zorg's post, I had implemented almost exactly that, but with randomNormal() instead of random(). I tried Ivan's suggestion of...

This looks really cool! Keen to see where this goes. It reminds me of the old game Mall Monster.

I'm trying to make a pong game, and I'm not sure how to introduce randomness to the angular velocity of the ball after it bounces off a paddle (which I want to do to make it a little less predictable than the original Pong). Each paddle is a static body, and the ball is a dynamic body with restituti...

Not that this is of much help, but for what it's worth anyway, I use dabbrev-expand (bound to M-/), and that's been good enough. I've not had much joy with any autocompletion packages in Emacs. When I really want code completion, I use a completely different tool.