ref: ea3be59529a3aeb354b86789f0790575cb2b77e3
dir: /srv.h/
#define playersock sockfd[turn % 2]
extern int id;
extern int sockfd[2];
typedef struct
{
int id;
int difficulty;
int state;
int turn;
int sockfd[2];
int grid[SzX][SzY];
char syncmsg[8];
}Game;
typedef struct
{
int fd;
char *nick;
int game;
int side;
int opts;
void *thread;
}Client;