Austinpayne/chess-serial-protocol

CMD [PARAMS]\n

CMD is cmd number (in hex)
PARAMS depend on the command and are comma separated, i.e p1,p2,p3,...,pN
Return status' should be >= 0, even for errors. Status' < 0 are reserved for parsing errors.

0x0 status (params: 0=ok)
0x1 start new game (params: player_type=<human|ai>)
0x2 end turn
0x3 move piece (params: move,<c|p|k|q|e>?,<promo|extra_move|en_passant_capture>? (in LAN format, ex. 0x3 e2e4))
- c capture, need to move piece at move first (ex. 0x3 e2e4,c)
- p promotion, need to move piece type promo to move (ex. 0x3 h7h8,p,q promote to queen)
- k/q castling, need to make extra_move as well (ex. 0x3 e1g1,k,h1f1 move rook at h1 as well)
- e en passant capture, need to remove en_passant_capture as well (ex. 0x3 b4a3,e,a4 remove a4 as well)
0x4 user promote
0x5 calibrate (photon initiated on new game, probably don't need to have user access)
0x6 end game (photon --> touchscreen, could also be touchscreen --> photon to indicate player wants to leave game)
0x7 debug commands
0x9 send log (forward debug messages to photon)
0xA end capture/castle
0xB system reset
0xC user turn ready (indicate to android that user can make moves)

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