validmo.patch

diff --git a/Source/Managers/MovableMan.h b/Source/Managers/MovableMan.h
index abc123..def456 100644
--- a/Source/Managers/MovableMan.h
+++ b/Source/Managers/MovableMan.h
@@ -576,6 +576,8 @@ namespace RTE {
 		// Or perhaps even more concerningly, stuff can be deleted, re-allocated over the same space, and then readded to movableman. Which even this solution does nothing to fix.
 		// Anyways, until we fix up ownership semantics... this is the best we can do.
+		// OPTIMIZATION: Combined set for O(1) general validity checks + separate type-specific sets
+		std::unordered_set<const MovableObject*> m_ValidMOs;
 		std::unordered_set<const MovableObject*> m_ValidActors;
 		std::unordered_set<const MovableObject*> m_ValidItems;
 		std::unordered_set<const MovableObject*> m_ValidParticles;