grid based puzzle overlapping sprites.

hello. i'm making 16*16 grid base puzzle game.

I'm using [set position to round(Mouse.X/16)*16, round(Mouse.Y/16)*16] for grid.

and

sprites On Dragdrop drop

---sprites is overlapping other sprites.

-------sprites is not overlapping other sprites at offset (16,0) set position to round((self.X+16)/16)*16, round(Mouse.Y/16)*16

-------else1...

-------else2

-------else3

to prevent overlapping sprites.

but if sprites overlapping exactly from center, it just do nothing.

I don't know how to sprites not overlap each other in any circumstances.

is there any good way?

thank you.

Try checking for overlapping at a different offset - 15 or less.