getFrom/getTo

gistfile1.java

    @Override
    public void onPlayerMove(PlayerMoveEvent event) {
        if (event.isCancelled()) return;

        Block from = event.getFrom().getBlock();
        Block to = event.getTo().getBlock();
        if (from.equals(to)) return;
        
        this.main.checkCrossings(event.getPlayer(), from, to);
    }