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-#ifndef GENERATOR_H_811386CE
-#define GENERATOR_H_811386CE
-
-#include <string>
-#include <random>
-#include <map>
-#include <tuple>
-#include <memory>
-#include <verbly.h>
-#include <hkutil/string.h>
-
-enum Height {
-  kTop,
-  kMiddle,
-  kBottom,
-  kHeightCount
-};
-
-enum Colour {
-  kWhite,
-  kBlack,
-  kRed,
-  kBlue,
-  kPurple,
-  kBrown,
-  kYellow,
-  kGreen,
-  kOrange,
-  kColourCount
-};
-
-enum FilterDirection {
-  kTowardSolution,
-  kTowardQuestion
-};
-
-enum PalindromeQuery {
-  kPalindromeUnspecified,
-  kForcePalindrome,
-  kRejectPalindrome
-};
-
-struct GenerateOptions {
-  bool obscure_hint = false;
-  int max_answer_len = 0;
-  int max_hint_len = 0;
-  int exact_len = 0;
-  int max_len_diff = -1; // supported by single, double, paired, cohinted
-  bool multiword = false;
-  bool save_for_later = false;
-  bool reuse_solution = false; // supported by single, double, and stack
-  std::string unique_pool; // supported by single, double, and stack
-  PalindromeQuery palindrome = kPalindromeUnspecified; // only important for middle black. supported by single and paired
-  std::string copy_to; // supported by single and paired
-  std::string copy_to2; // supported by paired
-  std::string copy_hidden; // supported by single mid white
-  bool force_two_words = false;
-  bool must_be_broad = false; // the solution must also be gettable by bottom white/red/blue. supported by single and double
-  bool allow_top_expansion = false; // this disables the triviality check that top puzzles can't also apply to middle
-};
-
-class Wanderlust {
-public:
-  Wanderlust(const std::string& words_filename, const std::string& puzzles_filename) {
-    std::ifstream words_file(words_filename);
-    std::string line;
-    while (std::getline(words_file, line)) {
-      words_.push_back(line);
-    }
-
-    std::ifstream puzzles_file(puzzles_filename);
-    while (std::getline(puzzles_file, line)) {
-      std::string line2;
-      if (!std::getline(puzzles_file, line2)) {
-        throw std::invalid_argument("Wanderlust file is malformed.");
-      }
-
-      puzzles_.emplace_back(line, line2);
-    }
-  }
-
-  std::tuple<std::string, std::string> GetPuzzle(std::mt19937& rng) const {
-    return puzzles_.at(std::uniform_int_distribution<int>(0, puzzles_.size()-1)(rng));
-  }
-
-  const std::string& GetWord(std::mt19937& rng) const {
-    return words_.at(std::uniform_int_distribution<int>(0, words_.size()-1)(rng));
-  }
-
-private:
-  std::vector<std::tuple<std::string, std::string>> puzzles_;
-  std::vector<std::string> words_;
-};
-
-class CrossTower {
-public:
-  explicit CrossTower(std::string filename) {
-    std::ifstream file(filename);
-    std::string line;
-    while (std::getline(file, line)) {
-      sets_.push_back(hatkirby::split<std::vector<std::string>>(line, " "));
-    }
-  }
-
-  std::vector<std::vector<std::string>> GetPuzzleSet(std::mt19937& rng) const {
-    std::vector<std::vector<std::string>> result = sets_;
-    std::shuffle(result.begin(), result.end(), rng);
-    result.resize(4);
-
-    for (std::vector<std::string>& set : result) {
-      std::shuffle(set.begin(), set.end(), rng);
-    }
-
-    return result;
-  }
-
-private:
-  std::vector<std::vector<std::string>> sets_;
-};
-
-class Paintings {
-public:
-  explicit Paintings(std::string filename) {
-    std::ifstream file(filename);
-    std::string line;
-    while (std::getline(file, line)) {
-      auto parts = hatkirby::split<std::vector<std::string>>(line, ",");
-      paintings_.emplace_back(parts[0], parts[1], std::atoi(parts[2].c_str()));
-    }
-  }
-
-  const std::tuple<std::string, std::string, int>& GetPainting(std::mt19937& rng) const {
-    return paintings_.at(std::uniform_int_distribution<int>(0, paintings_.size()-1)(rng));
-  }
-
-private:
-  std::vector<std::tuple<std::string, std::string, int>> paintings_;
-};
-
-class Generator {
-public:
-
-  explicit Generator(unsigned int seed) : seed_(seed), rng_(seed) {
-    database_ = std::make_unique<verbly::database>("/Users/hatkirby/Dropbox/Programming/verbly-datafiles/d1.3_lingo7");
-    wanderlust_ = std::make_unique<Wanderlust>("../wanderlust_words.txt", "../wanderlust_puzzles.txt");
-    cross_tower_ = std::make_unique<CrossTower>("../cross_tower.txt");
-    paintings_ = std::make_unique<Paintings>("../paintings.txt");
-  }
-
-  // Querying
-  bool IsPanelRandomized(const std::string& name) const {
-    return panels_.count(name);
-  }
-
-  const std::tuple<std::string, std::string>& GetPanel(const std::string& name) const {
-    return panels_.at(name);
-  }
-
-  bool IsNodeRandomized(const std::string& name) const {
-    return replace_nodes_.count(name);
-  }
-
-  const std::tuple<std::string, int>& GetNode(const std::string& name) const {
-    return replace_nodes_.at(name);
-  }
-
-  const std::vector<std::tuple<std::string, std::string>>& GetResources() const {
-    return resources_;
-  }
-
-  // Sets the panel's question and answer to static values.
-  void GenerateStaticPanel(std::string name, std::string question, std::string answer = "");
-
-  // Generates a one-block puzzle with the given height and colour.
-  void GenerateSinglePanel(std::string name, Height height, Colour colour, GenerateOptions options = {});
-
-  // Generates a one-block puzzle with the given height and colour, where there is a panel on two faces of the block.
-  // Both puzzles will have the same answer.
-  void GenerateDoublePanel(std::string name1, std::string name2, Height height, Colour colour, GenerateOptions options = {});
-
-  // Generates two puzzles with the same hint but different answers.
-  void GenerateCohintedPanels(std::string name1, std::string name2, Height height, Colour colour, GenerateOptions options = {});
-
-  // Generates two panels at once, where the question for one is the answer to the other.
-  // Colour must be white, black, or yellow.
-  // Middle white is a special case; the puzzles will be antonyms of one another.
-  void GeneratePairedPanels(std::string name1, std::string name2, Height height, Colour colour, GenerateOptions options = {});
-
-  // Generates a vertical stack of panels that all have the same answer.
-  // If a name is left blank, that height will be ignored.
-  void GeneratePanelStack(std::string top_name, Colour top_colour, std::string middle_name, Colour middle_colour, std::string bottom_name, Colour bottom_colour, GenerateOptions options = {});
-
-  // Generate an orange puzzle, with a number for the hint.
-  void GenerateOrangeNumberPanel(std::string name);
-
-  // Generate an orange puzzle, with a word for the hint.
-  void GenerateOrangeWordPanel(std::string name);
-
-  // Generate an orange puzzle, with an addition problem for the hint.
-  void GenerateOrangeAdditionPanel(std::string name);
-
-  // Generates the ONE ROAD MANY TURNS panel by combining the solutions to four other panels.
-  void GenerateOneRoadManyTurns(std::string order_name, std::string part1_name, std::string part2_name, std::string part3_name, std::string part4_name);
-
-  // Generates a hybrid puzzle where the solution is two words and each word is provided by a different colour/height puzzle.
-  void GenerateComboPanel(std::string name, Height left_height, Colour left_colour, Height right_height, Colour right_colour, GenerateOptions options = {});
-
-  // Generates the cross tower sets-of-four puzzles.
-  void GenerateCrossTower(
-    std::string north_tower_name,
-    std::string south_tower_name,
-    std::string east_tower_name,
-    std::string west_tower_name,
-    std::string north_lookout_name,
-    std::string south_lookout_name,
-    std::string east_lookout_name,
-    std::string west_lookout_name,
-    std::string north_other_name1,
-    std::string north_other_name2,
-    std::string north_other_name3,
-    std::string south_other_name1,
-    std::string south_other_name2,
-    std::string south_other_name3,
-    std::string east_other_name1,
-    std::string east_other_name2,
-    std::string east_other_name3,
-    std::string west_other_name1,
-    std::string west_other_name2,
-    std::string west_other_name3);
-
-  // Generate a painting/panel pair.
-  void GeneratePaintingPuzzle(std::string panel_name, std::string painting_name);
-
-private:
-
-  verbly::filter MakeHintFilter(verbly::filter subfilter, Height height, Colour colour, FilterDirection filter_direction) const;
-
-  bool GenerateSinglePanelImpl(std::string name, Height height, Colour colour, GenerateOptions options);
-
-  bool GenerateDoublePanelImpl(std::string name1, std::string name2, Height height, Colour colour, GenerateOptions options);
-
-  bool GenerateCohintedPanelsImpl(std::string name1, std::string name2, Height height, Colour colour, GenerateOptions options);
-
-  bool GeneratePairedPanelsImpl(std::string name1, std::string name2, Height height, Colour colour, GenerateOptions options);
-
-  bool GeneratePanelStackImpl(std::string top_name, Colour top_colour, std::string middle_name, Colour middle_colour, std::string bottom_name, Colour bottom_colour, GenerateOptions options);
-
-  bool GenerateComboPanelImpl(std::string name, Height left_height, Colour left_colour, Height right_height, Colour right_colour, GenerateOptions options);
-
-  void SavePanel(std::string name, std::string question, std::string answer, GenerateOptions options = {});
-
-  verbly::filter GetWordFilter(FilterDirection direction, GenerateOptions options) const;
-
-  bool IsClueTrivial(Height height, Colour colour, const verbly::form& clue, const verbly::form& solution, GenerateOptions options = {}) const;
-
-  unsigned int seed_;
-  std::mt19937 rng_;
-  std::unique_ptr<verbly::database> database_;
-  std::unique_ptr<Wanderlust> wanderlust_;
-  std::unique_ptr<CrossTower> cross_tower_;
-  std::unique_ptr<Paintings> paintings_;
-
-  // name, question, answer
-  std::map<std::string, std::tuple<std::string, std::string>> panels_;
-
-  // name, resource_path, resource_id (0 if needs import)
-  std::map<std::string, std::tuple<std::string, int>> replace_nodes_;
-
-  // path, type
-  std::vector<std::tuple<std::string, std::string>> resources_;
-
-  std::vector<std::string> reusable_;
-  std::map<std::string, std::set<std::string>> pools_;
-  std::set<std::string> used_paintings_;
-};
-
-#endif /* end of include guard: GENERATOR_H_811386CE */