This reverts commit 7d446e24.

This reverts commit 86825b0a.

This reverts commit 3c6de956.

This reverts commit 04448d7b.

This reverts commit c4d7ca2d.

MSG_UPDATE_DATA
flag=0: clear

MSG_UPDATE_CARD
flag=QUERY_CODE, code=0: clear

player_id: the index of players[] when G1 starts
type: first/second player in current duel

Refresh must use QUERY_CODE, QUERY_POSITION.