Comments on: In too Deep

By: Dimma

Dimma — Fri, 28 May 2010 19:13:36 +0000

The ellipse method seemed pretty cool. So cool I actually tried implementing it now and I think I got it right – getting collision normal and depth back from transformed “space” was pretty difficult.

I had an OBB around the player character, before, but that wasn’t as smooth.

By: Anti

Anti — Sat, 22 May 2010 18:18:20 +0000

Actually, I was always using sphere to triangles collision, just using a different method. Ellipses to be exact.

Every moving object in the game from the characters to the boxes, to the 2D weapons was made up of ellipses. It was a very limited setup.

GameDev is a nice place : )! Honestly without GameDev I’m not sure where I’d be.

By: Dimma

Dimma — Sat, 22 May 2010 15:52:59 +0000

Also, if you have sphere-to-triangles collision working, you can do alot with spheres!

For example, a snowball, rock, egg, huge pine cone, you name it, can be pushed around linearly over triangles/ground. Plus a rotation matrix can be made using that pushed distance and the character side-vector, to apply “roll” to the rock etc.

And most characters can stand on a rock, or snowball, like a dynamic platform, and stuff.

Man, for me that SAT theorem was a bit hard, I read about it before but decided to code an intuitive but slower function. The people at GameDev are really nice though.