From 57dab45e755a482407bb3cb072165ad29a8f72f2 Mon Sep 17 00:00:00 2001
From: yexo <yexo@openttd.org>
Date: Wed, 1 Apr 2009 08:38:57 +0000
Subject: [PATCH] (svn r15910) -Fix [FS#2777]: Clarify that TILE_INVALID is
 part of AIMap make doxygen output some documentation for it.

---
 src/ai/api/ai_company.hpp | 3 ++-
 src/ai/api/ai_map.hpp     | 3 +++
 src/ai/api/ai_tunnel.hpp  | 2 +-
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/ai/api/ai_company.hpp b/src/ai/api/ai_company.hpp
index e528a2f954..b75fa5fff1 100644
--- a/src/ai/api/ai_company.hpp
+++ b/src/ai/api/ai_company.hpp
@@ -153,7 +153,8 @@ public:
 	 * Return the location of a company's HQ.
 	 * @param company The company the get the HQ of.
 	 * @pre ResolveCompanyID(company) != COMPANY_INVALID.
-	 * @return The tile of the company's HQ, this tile is the most nothern tile of that HQ, or TILE_INVALID if there is no HQ yet.
+	 * @return The tile of the company's HQ, this tile is the most nothern tile
+	 *  of that HQ, or AIMap::TILE_INVALID if there is no HQ yet.
 	 */
 	static TileIndex GetCompanyHQ(CompanyID company);
 
diff --git a/src/ai/api/ai_map.hpp b/src/ai/api/ai_map.hpp
index bf903a37eb..160da9849a 100644
--- a/src/ai/api/ai_map.hpp
+++ b/src/ai/api/ai_map.hpp
@@ -17,6 +17,9 @@ public:
 		TILE_INVALID = INVALID_TILE, //!< Invalid TileIndex.
 	};
 #endif /* DEFINE_SCRIPT_FILES */
+#ifdef DOXYGEN_SKIP
+	const static TileIndex TILE_INVALID; //!< Invalid TileIndex.
+#endif
 
 	static const char *GetClassName() { return "AIMap"; }
 
diff --git a/src/ai/api/ai_tunnel.hpp b/src/ai/api/ai_tunnel.hpp
index f069c5f491..51d3404298 100644
--- a/src/ai/api/ai_tunnel.hpp
+++ b/src/ai/api/ai_tunnel.hpp
@@ -50,7 +50,7 @@ public:
 	 * @param tile The tile that is an entrance to a tunnel or the tile where you may want to build a tunnel.
 	 * @pre AIMap::IsValidTile(tile).
 	 * @return The TileIndex that is the other end of the (would be) tunnel, or
-	 *  TILE_INVALID if no other end was found (can't build tunnel).
+	 *  AIMap::TILE_INVALID if no other end was found (can't build tunnel).
 	 */
 	static TileIndex GetOtherTunnelEnd(TileIndex tile);