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path: root/data/maps/the_ancient/doors.txtpb
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doors {
  name: "Front Door"
  type: STANDARD
  receivers: "Components/Doors/Front N Tree"
  panels { room: "Outside" name: "THIS" }
  location_room: "Outside"
}
doors {
  name: "End Door"
  type: EVENT
  keyholders { map: "four_rooms" room: "Keyholder Room" name: "A" key: "a" }
  keyholders { map: "the_hive" room: "Main Area" name: "B" key: "b" }
  keyholders { map: "daedalus" room: "C Keyholder" name: "C" key: "c" }
  keyholders { map: "daedalus" room: "D Keyholder" name: "D" key: "d" }
  keyholders { map: "control_center" room: "Main Area" name: "2" key: "e" }
  keyholders { map: "daedalus" room: "F Keyholder" name: "F" key: "f" }
  keyholders { map: "daedalus" room: "Number Paintings Area" name: "G" key: "g" }
  keyholders { map: "daedalus" room: "Outside House" name: "H" key: "h" }
  keyholders { map: "the_unkempt" room: "Main Area" name: "I" key: "i" }
  keyholders { map: "the_jubilant" room: "Side Area" name: "J" key: "j" }
  keyholders { map: "the_tenacious" room: "Main Area" name: "K" key: "k" }
  keyholders { map: "the_partial" room: "Obverse Side" name: "L" key: "l" }
  keyholders { map: "the_extravagant" room: "X Plus" name: "M" key: "m" }
  keyholders { map: "the_shop" room: "Main Area" name: "N" key: "n" }
  keyholders { map: "control_center" room: "Main Area" name: "4" key: "o" }
  keyholders { map: "the_gallery" room: "Main Area" name: "P" key: "p" }
  keyholders { map: "the_quiet" room: "Keyholder Room" name: "Q" key: "q" }
  keyholders { map: "control_center" room: "Main Area" name: "3" key: "r" }
  keyholders { map: "the_nuanced" room: "Main Room" name: "S" key: "s" }
  keyholders { map: "the_congruent" room: "T Keyholder" name: "T" key: "t" }
  keyholders { map: "the_parthenon" room: "U Keyholder" name: "U" key: "u" }
  keyholders { map: "the_unkempt" room: "V Keyholder" name: "V" key: "v" }
  keyholders { map: "the_unkempt" room: "W Keyholder" name: "W" key: "w" }
  keyholders { map: "the_great" room: "North Landscape" name: "X" key: "x" }
  keyholders { map: "the_talented" room: "Main Area" name: "Y" key: "y" }
  keyholders { map: "control_center" room: "Main Area" name: "1" key: "z" }
  location_room: "Inside"
}
doors {
  name: "Lavender Cubes"
  type: LOCATION_ONLY
  panels { room: "Inside" name: "COLOR" }
  location_room: "Inside"
  location_name: "COLOR"
}
highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
#include "tracker_state.h"

#include <list>
#include <map>
#include <set>
#include <sstream>
#include <tuple>

#include "ap_state.h"
#include "game_data.h"

namespace {

struct TrackerState {
  std::map<std::tuple<int, int>, bool> reachability;
};

enum Decision { kYes, kNo, kMaybe };

TrackerState& GetState() {
  static TrackerState* instance = new TrackerState();
  return *instance;
}

Decision IsDoorReachable_Helper(int door_id,
                                const std::set<int>& reachable_rooms,
                                const std::set<int>& solveable_panels) {
  const Door& door_obj = GD_GetDoor(door_id);

  if (AP_GetDoorShuffleMode() == kNO_DOORS || door_obj.skip_item) {
    if (!reachable_rooms.count(door_obj.room)) {
      return kMaybe;
    }

    for (int panel_id : door_obj.panels) {
      if (!solveable_panels.count(panel_id)) {
        return kMaybe;
      }
    }

    return kYes;
  } else if (AP_GetDoorShuffleMode() == kSIMPLE_DOORS &&
             !door_obj.group_name.empty()) {
    return AP_HasItem(door_obj.group_name) ? kYes : kNo;
  } else {
    bool has_item = AP_HasItem(door_obj.item_name);

    if (!has_item) {
      for (const ProgressiveRequirement& prog_req : door_obj.progressives) {
        if (AP_HasItem(prog_req.item_name, prog_req.quantity)) {
          has_item = true;
          break;
        }
      }
    }

    return has_item ? kYes : kNo;
  }
}

Decision IsPanelReachable_Helper(int panel_id,
                                 const std::set<int>& reachable_rooms,
                                 const std::set<int>& solveable_panels) {
  const Panel& panel_obj = GD_GetPanel(panel_id);

  if (!reachable_rooms.count(panel_obj.room)) {
    return kMaybe;
  }

  if (panel_obj.name == "THE MASTER") {
    int achievements_accessible = 0;

    for (int achieve_id : GD_GetAchievementPanels()) {
      if (solveable_panels.count(achieve_id)) {
        achievements_accessible++;

        if (achievements_accessible >= AP_GetMasteryRequirement()) {
          break;
        }
      }
    }

    return (achievements_accessible >= AP_GetMasteryRequirement()) ? kYes
                                                                   : kMaybe;
  }

  if (panel_obj.name == "ANOTHER TRY" && AP_GetVictoryCondition() == kLEVEL_2) {
    int counting_panels_accessible = 0;

    for (int solved_panel_id : solveable_panels) {
      const Panel& solved_panel = GD_GetPanel(solved_panel_id);

      if (!solved_panel.non_counting) {
        counting_panels_accessible++;
      }
    }

    return (counting_panels_accessible >= AP_GetLevel2Requirement() - 1)
               ? kYes
               : kMaybe;
  }

  for (int room_id : panel_obj.required_rooms) {
    if (!reachable_rooms.count(room_id)) {
      return kMaybe;
    }
  }

  for (int door_id : panel_obj.required_doors) {
    Decision door_reachable =
        IsDoorReachable_Helper(door_id, reachable_rooms, solveable_panels);
    if (door_reachable == kNo) {
      const Door& door_obj = GD_GetDoor(door_id);
      return (door_obj.is_event || AP_GetDoorShuffleMode() == kNO_DOORS)
                 ? kMaybe
                 : kNo;
    } else if (door_reachable == kMaybe) {
      return kMaybe;
    }
  }

  for (int panel_id : panel_obj.required_panels) {
    if (!solveable_panels.count(panel_id)) {
      return kMaybe;
    }
  }

  if (AP_IsColorShuffle()) {
    for (LingoColor color : panel_obj.colors) {
      if (!AP_HasColorItem(color)) {
        return kNo;
      }
    }
  }

  return kYes;
}

}  // namespace

void RecalculateReachability() {
  GetState().reachability.clear();

  std::set<int> reachable_rooms;
  std::set<int> solveable_panels;

  std::list<int> panel_boundary;
  std::list<Exit> flood_boundary;
  flood_boundary.push_back({.destination_room = GD_GetRoomByName("Menu")});

  bool reachable_changed = true;
  while (reachable_changed) {
    reachable_changed = false;

    std::list<int> new_panel_boundary;
    for (int panel_id : panel_boundary) {
      if (solveable_panels.count(panel_id)) {
        continue;
      }

      Decision panel_reachable =
          IsPanelReachable_Helper(panel_id, reachable_rooms, solveable_panels);
      if (panel_reachable == kYes) {
        solveable_panels.insert(panel_id);
        reachable_changed = true;
      } else if (panel_reachable == kMaybe) {
        new_panel_boundary.push_back(panel_id);
      }
    }

    std::list<Exit> new_boundary;
    for (const Exit& room_exit : flood_boundary) {
      if (reachable_rooms.count(room_exit.destination_room)) {
        continue;
      }

      bool valid_transition = false;
      if (room_exit.door.has_value()) {
        Decision door_reachable = IsDoorReachable_Helper(
            *room_exit.door, reachable_rooms, solveable_panels);
        if (door_reachable == kYes) {
          valid_transition = true;
        } else if (door_reachable == kMaybe) {
          new_boundary.push_back(room_exit);
        }
      } else {
        valid_transition = true;
      }

      if (valid_transition) {
        reachable_rooms.insert(room_exit.destination_room);
        reachable_changed = true;

        const Room& room_obj = GD_GetRoom(room_exit.destination_room);
        for (const Exit& out_edge : room_obj.exits) {
          if (!out_edge.painting || !AP_IsPaintingShuffle()) {
            new_boundary.push_back(out_edge);
          }
        }

        if (AP_IsPaintingShuffle()) {
          for (const PaintingExit& out_edge : room_obj.paintings) {
            if (AP_GetPaintingMapping().count(out_edge.id)) {
              Exit painting_exit;
              painting_exit.destination_room = GD_GetRoomForPainting(
                  AP_GetPaintingMapping().at(out_edge.id));
              painting_exit.door = out_edge.door;

              new_boundary.push_back(painting_exit);
            }
          }
        }

        for (int panel_id : room_obj.panels) {
          new_panel_boundary.push_back(panel_id);
        }
      }
    }

    flood_boundary = new_boundary;
    panel_boundary = new_panel_boundary;
  }

  for (const MapArea& map_area : GD_GetMapAreas()) {
    for (size_t section_id = 0; section_id < map_area.locations.size();
         section_id++) {
      const Location& location_section = map_area.locations.at(section_id);
      bool reachable = reachable_rooms.count(location_section.room);
      if (reachable) {
        for (int panel_id : location_section.panels) {
          reachable &= (solveable_panels.count(panel_id) == 1);
        }
      }

      GetState().reachability[{map_area.id, section_id}] = reachable;
    }
  }
}

bool IsLocationReachable(int area_id, int section_id) {
  std::tuple<int, int> key = {area_id, section_id};

  if (GetState().reachability.count(key)) {
    return GetState().reachability.at(key);
  } else {
    return false;
  }
}