From 823f75e59239093a0947667ead7fbefa484cb851 Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <c.oelckers@zdoom.fake>
Date: Mon, 12 Sep 2016 21:32:17 +0200
Subject: [PATCH] - fixed: UDMF user value lists need to be sorted for binary
 search to work but weren't.

---
 src/p_udmf.cpp | 5 +++++
 src/r_defs.h   | 1 +
 2 files changed, 6 insertions(+)

diff --git a/src/p_udmf.cpp b/src/p_udmf.cpp
index 0b054247eb..c09debc512 100644
--- a/src/p_udmf.cpp
+++ b/src/p_udmf.cpp
@@ -309,6 +309,11 @@ void FUDMFKeys::Sort()
 
 FUDMFKey *FUDMFKeys::Find(FName key)
 {
+	if (!mSorted)
+	{
+		mSorted = true;
+		Sort();
+	}
 	int min = 0, max = Size()-1;
 
 	while (min <= max)
diff --git a/src/r_defs.h b/src/r_defs.h
index f27ac27168..59b1fe0d37 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -220,6 +220,7 @@ struct FUDMFKey
 
 class FUDMFKeys : public TArray<FUDMFKey>
 {
+	bool mSorted = false;
 public:
 	void Sort();
 	FUDMFKey *Find(FName key);