Jubi - Lightweight 2D Physics Engine

Jubi is a passion project I've been creating for around the past month, which is meant to be a lightweight physics engine, targeted for 2D. As of this post, it's on v0.2.1, with world creation, per-body integration, built-in error detection, force-based physics, and other basic needs for a physics engine.

Jubi has been intended for C/C++ projects, with C99 & C++98 as the standards. I've been working on it by myself, since around late-November, early-December. It has started from a basic single-header library to just create worlds/bodies and do raw-collision checks manually, to as of the current version, being able to handle hundreds of bodies with little to no slow down, even without narrow/broadphase implemented yet. Due to Jubi currently using o(n²) to check objects, compilation time can stack fast if used for larger scaled projects, limiting the max bodies at the minute to 1028.

It's main goal is to be extremely easy, and lightweight to use. With tests done, translated as close as I could to 1:1 replicas in Box2D & Chipmunk2D, Jubi has performed the fastest, with the least amount of LOC and boilerplate required for the same tests. We hope, by Jubi-1.0.0, to be near the level of usage/fame as Box2D and/or Chipmunk2D.

Jubi Samples:

#define JUBIIMPLEMENTATION
#include "../Jubi.h"

#include <stdio.h>

int main() {
    JubiWorld2D WORLD = JubiCreateWorld2D();

// JBody2DCreateBox(JubiWorld2D *WORLD, Vector2 Position, Vector2 Size, BodyType2D Type, float Mass)
    Body2D *Box = JBody2DCreateBox(&WORLD, (Vector2){0, 0}, (Vector2){1, 1}, BODYDYNAMIC, 1.0f);
   
    // ~1 second at 60 FPS
    for (int i=0; i < 60; i++) {
        JubiStepWorld2D(&WORLD, 0.033f);

        printf("Frame: %02d | Position: (%.3f, %.3f) | Velocity: (%.3f, %.3f) | Index: %d\n", i, Box -> Position.x, Box -> Position.y, Box -> Velocity.x, Box -> Velocity.y, Box -> Index);
    }
   
    return 0;
}

Jubi runtime compared to other physic engines:

|Physics Engine|Runtime|
|:-|:-|
|Jubi|0.0036ms|
|Box2D|0.0237ms|
|Chipmunk2D|0.0146ms|

Jubi Github: https://github.com/Avery-Personal/Jubi

https://redd.it/1prwf8o
@r_cpp