My original method for doing this involved taking the player's position, dividing it by the grid cell size, and rounding the result. This works for most cases except when I move my player up above y-axis zero or to the left of x-axis 0. I use the grids to load chunks of procedurally generated tiles into my scene.

it keeps resulting in -0 being a component of the position vectors, which throws my system off. I fixed that by converting each component to integers, but that doesn't solve the greater problem.

There must be a more effective method for this available.