call MPSTART in the very beginning of the game
This will give variable MPLOCAL a number (starting at 0 and counting up, each connected device has a unique number)
This also sets MPHOST
Examples in code:
IF MPLOCAL!=-1 THEN 'if server is open
IF MPLOCAL==MPHOST THEN 'if you are the creator of the server
Now: you use MPGET and MPSET to set a multiplayer value, you can have 8 variables shared ...
3そうだね プレイ済み