editor: fix hovering scenery on non-center chunk

1 files changed, 6 insertions, 0 deletions

diff --git a/src/global-coords.hpp b/src/global-coords.hpp
index 5453662e..94b0d48e 100644
--- a/src/global-coords.hpp
+++ b/src/global-coords.hpp
@@ -10,8 +10,14 @@ struct chunk_coords final {
     std::int16_t x = 0, y = 0;
 
     constexpr bool operator==(const chunk_coords& other) const noexcept = default;
+    constexpr Vector2i operator-(chunk_coords other) const noexcept;
 };
 
+constexpr Vector2i chunk_coords::operator-(chunk_coords other) const noexcept
+{
+    return { Int{x} - other.x, Int{y} - other.y };
+}
+
 struct global_coords final {
     static constexpr std::uint32_t _0u = 1 << 15;
     static constexpr auto _0s = std::int32_t(_0u);