Parser wanted

[insanity54]

The controlpoint receives HEX encoded data generated by the gateway--

            xbee.remoteTransmit({
                destinationId: device.did,
                broadcast: false,
                data: `DCXST
                       CT${device.controllingTeam.toString(16)}
                       RP${device.redProgress.toString(16)}
                       BP${device.bluProgress.toString(16)}` // Tell DCX to act GAME 0
            })

This is nasty code that currently "parses" the received data

      if (
        rx.getData(0) == 'D' &&
        rx.getData(1) == 'C' &&
        rx.getData(2) == 'X' &&
        rx.getData(3) == 'S' &&
        rx.getData(4) == 'T' 
      )
      {
        // we're getting a state update (ST)
        
        if (rx.getData(5) == 'C' &&
            rx.getData(6) == 'T'
        )
        {
          // Controlling Team
          if (rx.getData(7) < 5) {
            controllingTeam = rx.getData(7);
          }
        }

        if (rx.getData(8) == 'R' &&
            rx.getData(9) == 'P'
        )
        {
          if (rx.getData(10) < 101) {
            redProgress = rx.getData(10);
          }
        }

        if (rx.getData(11) == 'B' &&
            rx.getData(12) == 'P'
        )
        {
          if (rx.getData(13) < 101) {
            bluProgress = rx.getData(11);
          }
        }
      }

You can see it is not flexible. For example, BP must always come after RP.

This is ideal code, but I'm unsure of how to implement a parser class.

    DCXParser dcxParser = DCXParser(rx);

      // interpret the state updates
     if (dcxParser.getDataType() == STATE_UPDATE) {
       controllingTeam = dcxParser.getData(CONTROLLING_TEAM);
       redProgress = dcxParser.getData(RED_PROGRESS);
       bluProgress = dcxParser.getData(BLU_PROGRESS);
     }