code: function (client, packet) {
              var line_x = packet.readSInt16LE();
              var line_y = packet.readSInt16LE();
  
              if (client.debug >= 4)
                  client.log('debug line drawn from x=' + line_x + ' y=' + line_y);
              client.emitEvent('debugLine', line_x, line_y);
          }
docs: debug line drawn from the player to the specified point