const Point &get_position() const { return pos; }
void place(Block *, unsigned);
bool free_block(Block *);
+ int get_entry_to_block(Block *) const;
void tick(const Msp::Time::TimeStamp &, const Msp::Time::TimeDelta &);
void save(std::list<Msp::DataFile::Statement> &) const;
private: