Fixed stupid shit

vec_util.h

@@ -1,11 +1,9 @@
 #ifndef VEC_UTIL_H_
 #define VEC_UTIL_H_
-#include <raylib.h>
 #include <math.h>
+#include <raylib.h>
 static const Vector2 NULL_VEC2 = {0, 0};
 
-
-
 Vector2 transform_to_center(Vector2 v) {
   int width = GetRenderWidth();
   int height = GetRenderHeight();
@@ -26,6 +24,9 @@ float vec2_len(Vector2 v) { return sqrtf(v.x * v.x + v.y * v.y); }
 
 Vector2 vec2_normalize(const Vector2 v) {
   float len = vec2_len(v);
+  if (len == 0) {
+    return NULL_VEC2;
+  }
   Vector2 result = {v.x / len, v.y / len};
   return result;
 }