From 7c53b1e99ad1a4b424d4595009f0ac6832382d49 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Tue, 14 Nov 2023 11:22:17 +0100
Subject: [PATCH] Add clearing BT memory in non-release builds to make issues
 spotting easier

---
 Source/Engine/AI/BehaviorKnowledge.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Source/Engine/AI/BehaviorKnowledge.cpp b/Source/Engine/AI/BehaviorKnowledge.cpp
index a33738d31..ffc011818 100644
--- a/Source/Engine/AI/BehaviorKnowledge.cpp
+++ b/Source/Engine/AI/BehaviorKnowledge.cpp
@@ -150,7 +150,13 @@ void BehaviorKnowledge::InitMemory(BehaviorTree* tree)
     RelevantNodes.Resize(tree->Graph.NodesCount, false);
     RelevantNodes.SetAll(false);
     if (!Memory && tree->Graph.NodesStatesSize)
+    {
         Memory = Allocator::Allocate(tree->Graph.NodesStatesSize);
+#if !BUILD_RELEASE
+        // Clear memory to make it easier to spot missing data issues (eg. zero GCHandle in C# BT node due to missing state init)
+        Platform::MemoryClear(Memory, tree->Graph.NodesStatesSize);
+#endif
+    }
 }
 
 void BehaviorKnowledge::FreeMemory()