From e3fb793a8a6d4bab58e68c54736a655e2373b78c Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Thu, 11 Mar 2010 21:55:37 +0000
Subject: [PATCH] (svn r19388) -Fix [FS#3666]: [NoAI] When reloading a
 savegame, an AI failing to compile could trigger (trying) to read the not yet
 loaded information of another AI via the AI Debug window and its "open with
 the most recently used AI" feature

---
 src/ai/ai_gui.cpp | 8 ++++++++
 src/misc.cpp      | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/src/ai/ai_gui.cpp b/src/ai/ai_gui.cpp
index beeed22bc2..c7ff796d9b 100644
--- a/src/ai/ai_gui.cpp
+++ b/src/ai/ai_gui.cpp
@@ -1016,3 +1016,11 @@ void ShowAIDebugWindow(CompanyID show_company)
 		ShowErrorMessage(STR_ERROR_AI_DEBUG_SERVER_ONLY, INVALID_STRING_ID, WL_INFO);
 	}
 }
+
+/**
+ * Reset the AI windows to their initial state.
+ */
+void InitializeAIGui()
+{
+	AIDebugWindow::ai_debug_company = INVALID_COMPANY;
+}
diff --git a/src/misc.cpp b/src/misc.cpp
index 995f0dd5e2..7ec606b5a4 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -41,6 +41,7 @@ void InitializeRailGui();
 void InitializeRoadGui();
 void InitializeAirportGui();
 void InitializeDockGui();
+void InitializeAIGui();
 void InitializeIndustries();
 void InitializeTowns();
 void InitializeSubsidies();
@@ -92,6 +93,7 @@ void InitializeGame(uint size_x, uint size_y, bool reset_date, bool reset_settin
 	InitializeRoadGui();
 	InitializeAirportGui();
 	InitializeDockGui();
+	InitializeAIGui();
 	InitializeTowns();
 	InitializeSubsidies();
 	InitializeTrees();