ref: 387ecb6cb48885d4102383064d82fb9554377f66
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;