How to transform local AABB min/max bounds into Oriented Bounding Boxes using entity rotation quaternions in 3D space.

// Always check your pointers!
if (!pLocalPlayer) return;

Quaternions represent 3D rotation without gimbal lock. Multiplying each of the 8 local vertices by the rotation quaternion and adding world origin generates exact 3D corners.

Projecting the 8 corners with WorldToScreen and connecting 12 edges creates an authentic 3D box that tilts with slopes and stairs.