cursor.h

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#ifndef CURSOR_H
#define CURSOR_H

#include <typedefs.h>

class cursor
{
public:

  uint j;
  uint k;

  cursor()
    : j(1), k(1) {}

  void up() { ++k; k %= 3; }
  void down() { k += 2; k %= 3; }
  void left() { j += 2; j %= 3; }
  void right() { ++j; j %= 3; }
};


#endif