If the player chooses a piece, and then clicks in the corner of a tile, then it will allow the piece to travel to that location, and merge with another piece. This shouldn't be allowed. Before starting the calculation of the path, validate, if there's already a piece at the destination.
If the player chooses a piece, and then clicks in the corner of a tile, then it will allow the piece to travel to that location, and merge with another piece. This shouldn't be allowed. Before starting the calculation of the path, validate, if there's already a piece at the destination.