src: add more chunk_coords operators

1 files changed, 11 insertions, 0 deletions

diff --git a/src/world.cpp b/src/world.cpp
index 9c3f8276..6749210a 100644
--- a/src/world.cpp
+++ b/src/world.cpp
@@ -199,4 +199,15 @@ void world::throw_on_wrong_entity_type(object_id id, entity_type actual, entity_
     fm_throw("object '{}' has wrong entity type '{}', should be '{}'"_cf, id, (size_t)actual, (size_t)expected);
 }
 
+auto world::neighbors(floormat::chunk_coords_ coord) -> std::array<neighbor_pair, 8>
+{
+    std::array<neighbor_pair, 8> ret;
+    for (auto i = 0uz; const auto& x : neighbor_offsets)
+    {
+        auto ch = coord + x;
+        ret[i++] = { at(ch), ch };
+    }
+    return ret;
+}
+
 } // namespace floormat