ref: 216ecc546034247d9281462c605b4938971e9b98
dir: /sys/src/games/xs.h/
#include <u.h>
#include <libc.h>
#include <draw.h>
#include <thread.h>
#include <cursor.h>
#include <mouse.h>
#include <keyboard.h>
enum
{
	MAXN = 5
};
typedef struct Piece Piece;
struct Piece{
	short	rot;
	short	tx;
	Point	sz;
	Point	d[MAXN];
};
extern int N, NP;
extern Piece pieces[];