Merge branch 'main' of git.h3cx.dev:h3cx/fphysics

main.c

@@ -3,6 +3,7 @@
 #include <bits/time.h>
 #include <math.h>
 #include <pthread.h>
+#include <unistd.h>
 #include <raylib.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -130,10 +131,6 @@ bool vec2_is_null(Vector2 v) {
   return false;
 }
 
-typedef struct universe {
-  unsigned int num_bodies;
-  mass_body_t *bodies;
-} universe_t;
 
 long long timespec_diff_ns(struct timespec end, struct timespec start) {
   return (end.tv_sec - start.tv_sec) * 1000000000LL +