distance_grid.h

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#ifndef DISTANCE_GRID_H
#define DISTANCE_GRID_H
 
#include <string>
#include <unordered_map>
#include <memory>
 
#include <MazeBuilder/grid.h>
 
namespace mazes {
 
class distances;
class cell;
 
class distance_grid : public grid {
 
public:
    friend class binary_tree;
    friend class dfs;
    friend class sidewinder;
 
 
    explicit distance_grid(unsigned int width, unsigned int length, unsigned int height = 1u);
        
    virtual std::optional<std::string> contents_of(const std::shared_ptr<cell>& c) const noexcept override;
    virtual std::optional<std::uint32_t> background_color_for(const std::shared_ptr<cell>& c) const noexcept override;
 
    std::shared_ptr<distances> get_distances() const noexcept;
private:
    std::shared_ptr<grid_interface> m_grid;
    std::shared_ptr<distances> m_distances;
 
    std::optional<std::string> to_base36(int value) const;
    void calc_distances() noexcept;
};
}
 
#endif // DISTANCE_GRID_H