From 0e07a938b743c809cdb77ddefce4d8ebf0ea2403 Mon Sep 17 00:00:00 2001
From: rubidium <rubidium@openttd.org>
Date: Sat, 26 May 2007 21:00:48 +0000
Subject: (svn r9943) -Fix [FS#806]: building roads/trams did take notice of
 the foundation of the opposite roadtype.

---
 src/road_cmd.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/road_cmd.cpp b/src/road_cmd.cpp
index ecb395b65..f93a6d9db 100644
--- a/src/road_cmd.cpp
+++ b/src/road_cmd.cpp
@@ -434,7 +434,7 @@ do_clear:;
 			cost += ret;
 	}
 
-	ret = CheckRoadSlope(tileh, &pieces, existing);
+	ret = CheckRoadSlope(tileh, &pieces, (IsTileType(tile, MP_STREET) ? GetAllRoadBits(tile) : ROAD_NONE) | existing);
 	/* Return an error if we need to build a foundation (ret != 0) but the
 	 * current patch-setting is turned off (or stupid AI@work) */
 	if (CmdFailed(ret) || (ret != 0 && (!_patches.build_on_slopes || _is_old_ai_player)))
-- 
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