#pragma once

#include "DetourNavMesh.h"
#include "DetourNavMeshQuery.h"

const int MAX_POLYS = 256;

namespace mc
{
    class ColliderNode;
};

struct HouseInfo
{
    mc::ColliderNode* node = nullptr;
    std::vector<float> verts;
};

class Entity;
class Obstacle;
class MapService;
class GridService;
class Room;
struct RoomInitInfo;
class MapInstance : public std::enable_shared_from_this<MapInstance>
{
 public:
    int map_id = 0;

    void Init();
    void UnInit();

    void AttachRoom(Room* room, RoomInitInfo& init_info);
    const mt::Map* GetMapMeta() { return map_meta_; };
    std::vector<int>& GetPolyExtDatas() { return poly_ext_datas_; };
    Entity* GetEntityByUniId(int uniid);

    dtNavMesh* GetNavMesh() { return navmesh_; };
    dtNavMeshQuery* GetNavMeshQuery() { return navmesh_query_; };
    int FindStraightPath(const glm::vec3& start,
                         const glm::vec3& end,
                         std::vector<glm::vec3>& paths);
    int FindRandomPointAroundCircle(const glm::vec3& center_pos,
                                    float max_radius,
                                    glm::vec3& random_pt);
    bool Raycast(const glm::vec3& start, const glm::vec3& end,
                 glm::vec3& hit_point, bool& hit_result);
    bool RaycastEx(const glm::vec3& start, const glm::vec3& end,
                   glm::vec3& hit_point, bool& hit_result,
                   int& same_polys_flags, std::vector<dtPolyRef>& spec_polys);
    bool FindNearestPoint(const glm::vec3& center, float radius, glm::vec3& nearestPt);
    bool GetPosHeight(const Position& pos, float& out_height);
    dtPoly* GetPoly(glm::vec3 pos, int& poly_idx);
    void Scale(glm::vec3& v);
    void UnScale(glm::vec3& v);
    glm::vec3 UnScaleEx(const glm::vec3& v);
    void CheckTerrain(Creature* c, int same_poly_flags, const std::vector<dtPolyRef>& spec_polys);
    void TraverseHouseList(std::function<void (HouseInfo*)> func);
    bool PtInHouse(const glm::vec3& pt, glm::vec3& nearest_pt);
    bool SceneRaycast(const glm::vec3& orig, const glm::vec3& dir, float max_distance,
                      glm::vec3& hit_pos, float& ray_length);

 private:
    void CreateThings();
    void LoadHouse();
    int AllocUniid();
    void MarkMapAreaPolys();

 private:
    dtNavMesh* navmesh_ = nullptr;
    dtNavMeshQuery* navmesh_query_ = nullptr;

    float hit_normal_[3];
    float hit_pos_[3];
    dtPolyRef polys_[MAX_POLYS];

    int current_uniid_ = 0;
    std::map<int, Entity*> uniid_hash_;

    std::vector<int> poly_ext_datas_;

    std::list<HouseInfo> houses_;

    std::vector<mc::ColliderNode*> things_;

    std::string map_tpl_name_;
    const mt::Map* map_meta_ = nullptr;
    MapService* map_service_ = nullptr;
    GridService* grid_service_ = nullptr;
};