Better collision math + Prettier graphics!

I forced myself to try to experiment with different ways to detect collisions in a better way, since the particles are small for now, there is no need for Quadtree box stuff and only testing the bounding box is efficient enough! also i made a shadow effect for the particles, now they appear way more cool!

this is cool and all but im still stuck on n-body and this is a physics engine, next devlogs should be about more cool stuff hopefully!

Collision detection!

I finally implemented collision so now the n-body simulation actually look kind of neat, surprisingly this involved a LOT of math that i had to re-learn since i didn’t pay attention in physics class, tho it can still be massively improved performance wise, i actually didn’t use Quadtree for collision detection for sanity reasons, once i’ll actually write a proper Quadtree i’ll make sure to use it for collision detection, should be next devlog! perhaps i can start with particle simulations now, stuff like water and smoke!

QUADTREES!

I implemented Quadtree, which allowed me to reduce the very bad O(n^2) which literally froze at 1000 particles to a good O(nlogn) which was able to handle 10x that at 25fps on average (it was 40 fps if i wasn’t recording with obs lol), this was thanks to Barnes-Hut approximation algorithm and it’s idea of combining averages, i though that was pretty neat!!!

The next step is to handle collisions and also optimize the Quadtree a bit so that ill be able to handle crazier numbers!

small steps!

Made a small O(N^2) N-Body simulation! next step is trying to implement collision detection and use a Quadtree to reduce the O(N^2) to O(NlogN)!

About what this project should be, i’ll try to make it as much possible dev centered, this is a library that allows devs to abstract physics and focus on the game, i’ll make sure to code examples and perhaps make a small game prototypes too!