move walkable region calculation to class chunk

1 files changed, 17 insertions, 7 deletions

diff --git a/src/chunk.hpp b/src/chunk.hpp
index 3e142abf..5404d25b 100644
--- a/src/chunk.hpp
+++ b/src/chunk.hpp
@@ -27,6 +27,7 @@ public:
     friend struct tile_ref;
     friend struct object;
     friend class world;
+    struct pass_region;
 
     tile_ref operator[](size_t idx) noexcept;
     tile_proto operator[](size_t idx) const noexcept;
@@ -62,10 +63,12 @@ public:
     void mark_walls_modified() noexcept;
     void mark_scenery_modified() noexcept;
     void mark_passability_modified() noexcept;
+    void mark_region_modified() noexcept;
     void mark_modified() noexcept;
 
     bool is_passability_modified() const noexcept;
     bool is_scenery_modified() const noexcept;
+    bool is_region_modified() const noexcept;
 
     struct ground_mesh_tuple final {
         GL::Mesh& mesh;
@@ -116,6 +119,9 @@ public:
     static constexpr size_t max_wall_quad_count =
         TILE_COUNT*Wall::Direction_COUNT*(Wall::Group_COUNT+4);
 
+    const pass_region* get_pass_region();
+    void make_pass_region(pass_region& ret);
+
 private:
     struct ground_stuff
     {
@@ -133,23 +139,27 @@ private:
 
     Pointer<ground_stuff> _ground;
     Pointer<wall_stuff> _walls;
+    pass_region* _region = nullptr;
     Array<std::shared_ptr<object>> _objects;
     class world* _world;
     GL::Mesh ground_mesh{NoCreate}, wall_mesh{NoCreate}, scenery_mesh{NoCreate};
     Pointer<RTree> _rtree;
     chunk_coords_ _coord;
 
-    mutable bool _maybe_empty            : 1 = true,
-                 _ground_modified        : 1 = true,
-                 _walls_modified         : 1 = true,
-                 _scenery_modified       : 1 = true,
-                 _pass_modified          : 1 = true,
-                 _teardown               : 1 = false,
-                 _objects_sorted         : 1 = true;
+    mutable bool _maybe_empty      : 1 = true,
+                 _ground_modified  : 1 = true,
+                 _walls_modified   : 1 = true,
+                 _scenery_modified : 1 = true,
+                 _pass_modified    : 1 = true,
+                 _region_modified  : 1 = true,
+                 _teardown         : 1 = false,
+                 _objects_sorted   : 1 = true;
 
     void ensure_scenery_buffers(scenery_scratch_buffers bufs);
     static topo_sort_data make_topo_sort_data(object& e, uint32_t mesh_idx);
 
+    static void delete_pass_region(pass_region*& ptr);
+
     struct bbox final // NOLINT(cppcoreguidelines-pro-type-member-init)
     {
         object_id id;