The current implementations (as of protocol version &protonum;) use the following opcode values to identify messages:

OP_CHEAT = 0

OP_MAP = 2

OP_RULES = 3

OP_STATE = 4

OP_MOVE = 5

OP_ACTION = 6

MOVE_PLAYER = 0

MOVE_MONSTER = 1

MOVE_UP = 0

MOVE_DOWN = 1

MOVE_LEFT = 2

MOVE_RIGHT = 3

STATE_START = 0

STATE_STOP = 1

MAP_SELECT = 0

MAP_SELECTED = 1

ACTION_NEWPLAYER = 0

ACTION_NEWMONSTER = 1

ACTION_NEWITEM = 2

ACTION_NEWEXIT = 3

ACTION_NEWBLAST = 4

ACTION_NEWBOMB = 5

ACTION_ITEM = 6

ACTION_REMOVEPLAYER = 7

ACTION_REMOVEMONSTER = 8

ACTION_REMOVEITEM = 9

ACTION_REMOVEBOMB = 10

ACTION_REMOVEBLAST = 11

ACTION_ACTIVATEITEM = 12

ACTION_ACTIVATEEXIT = 13

ACTION_HIGHLIGHTITEM = 14

ACTION_HIGHLIGHTEXIT = 15