Add nodiscard to core math classes to catch c++ errors.

A common source of errors is to call functions (such as round()) expecting them to work in place, but them actually being designed only to return the processed value. Not using the return value in this case in indicative of a bug, and can be flagged as a warning by using the [[nodiscard]] attribute.

1 files changed, 2 insertions, 2 deletions

diff --git a/core/math/rect2.h b/core/math/rect2.h
index f34550bef1..4ea24e8f88 100644
--- a/core/math/rect2.h
+++ b/core/math/rect2.h
@@ -35,7 +35,7 @@
 
 struct Transform2D;
 
-struct Rect2 {
+struct _NO_DISCARD_ Rect2 {
 	Point2 position;
 	Size2 size;
 
@@ -363,7 +363,7 @@ struct Rect2 {
 	}
 };
 
-struct Rect2i {
+struct _NO_DISCARD_ Rect2i {
 	Point2i position;
 	Size2i size;