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-rw-r--r--src/world.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/world.cpp b/src/world.cpp
index 56a0b735..4e8e0095 100644
--- a/src/world.cpp
+++ b/src/world.cpp
@@ -81,6 +81,7 @@ world::world(size_t capacity) : _chunks{capacity}
chunk& world::operator[](chunk_coords_ coord) noexcept
{
+ fm_debug_assert(coord.z >= -8 && coord.z < 8);
auto& [c, coord2] = _last_chunk;
if (coord != coord2)
c = &_chunks.try_emplace(coord, *this).first->second;