#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[];