Following #3,

May be could be better to make same for HE_COLLISION_PAIR_MAX, HE_GRID_RESULT_MAX and ENTITY_COUNT?

Also may be rename ENTITY_COUNT to ENTITY[_NUM]_MAX? 🤔

Thank you so much for awesome work!

Also I'm sure there is needed some validation for numeric defines. Something like compile-time assert that check that value is numeric and is power of two, or just even number if needed. (I've found some solutions: 1, 2, 3, 4)