path.hpp

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/* BSD 3-Clause License
 *
 * Copyright © 2008-2025, Jice and the libtcod contributors.
 * All rights reserved.
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 * modification, are permitted provided that the following conditions are met:
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#pragma once
#ifndef TCOD_PATH_HPP_
#define TCOD_PATH_HPP_
 
#include <utility>
 
#include "fov.hpp"
#include "path.h"

 

class TCODLIB_API ITCODPathCallback {
 public:
  virtual ~ITCODPathCallback() = default;
  virtual float getWalkCost(int xFrom, int yFrom, int xTo, int yTo, void* userData) const = 0;
};
 
// clang-format off
class TCODLIB_API TCODPath {
public :
  TCODPath(const TCODMap *map, float diagonalCost=1.41f);
  TCODPath(int width, int height, const ITCODPathCallback *listener, void *userData, float diagonalCost=1.41f);
 
  TCODPath(const TCODPath&) = delete;
  TCODPath& operator=(const TCODPath&) = delete;
  TCODPath(TCODPath&& rhs) noexcept {
    std::swap(data, rhs.data);
    std::swap(cppData, rhs.cppData);
  }
  TCODPath& operator=(TCODPath&& rhs) noexcept {
    std::swap(data, rhs.data);
    std::swap(cppData, rhs.cppData);
    return *this;
  }
  virtual ~TCODPath();

  bool compute(int ox, int oy, int dx, int dy);

  void reverse();
 

  void getOrigin(int *x,int *y) const;
  void getDestination(int *x,int *y) const;

  int size() const;

  void get(int index, int *x, int *y) const;

  bool isEmpty() const;

  bool walk(int *x, int *y, bool recalculateWhenNeeded);
 
protected :
  friend float TCOD_path_func(int xFrom, int yFrom, int xTo,int yTo, void *data);
  TCOD_path_t data{};
  struct WrapperData {
    void *userData{};
    const ITCODPathCallback *listener{};
  } cppData;
};
 
//Dijkstra kit
class TCODLIB_API TCODDijkstra {
    public:
        TCODDijkstra (TCODMap *map, float diagonalCost=1.41f);
        TCODDijkstra (int width, int height, const ITCODPathCallback *listener, void *userData, float diagonalCost=1.41f);
 
        TCODDijkstra(const TCODDijkstra&) = delete;
        TCODDijkstra& operator=(const TCODDijkstra&) = delete;
        TCODDijkstra(TCODDijkstra&& rhs) noexcept {
          std::swap(data, rhs.data);
          std::swap(cppData, rhs.cppData);
        }
        TCODDijkstra& operator=(TCODDijkstra&& rhs) noexcept {
          std::swap(data, rhs.data);
          std::swap(cppData, rhs.cppData);
          return *this;
        }
 
        ~TCODDijkstra (void);
        void compute (int rootX, int rootY);

        bool setPath (int toX, int toY);

        float getDistance (int x, int y);
        bool walk (int *x, int *y);
    bool isEmpty() const;
    void reverse();
    int size() const;
    void get(int index, int *x, int *y) const;
    private:
        TCOD_dijkstra_t data{};
        struct WrapperData {
            void *userData{};
            const ITCODPathCallback *listener{};
        } cppData;
};

#endif  // TCOD_PATH_HPP_