I need help with my tower defense game, I need grid snapping help, I will be thankful for your help

maybe

(((grid size) * (round (((x or y pos) - (offset)) / (grid size)))) + (offset))

Thanks, but what about the X and Y ?

You could just use roundings, here is an example on how you could do it (based on grid size, example grid size will be 10)

(round (((Y pos) / ([^10] of (length of [Y pos])::operators))))

If round is equal to 1 you choose the higher grid if 0 choose lower grid. This is not tested so a few adjustments might be needed for it to work if someone clicked on a place with 4 squares overlapping. The same thing can be used for X pos but just that if 1 go to left and 0 go to right. (Direction to snap to can be changed.) This only works due to the grid size being in the power of 10s (e.g 1, 10, 100 etc.)

If I understood the question wrongly then sorry, it was a bit confusing on what you wanted.

I definitely did not understand on what you were trying to tell me, but thanks for trying to help