From 82fc340a0a608eb1edf8c079b4585cf0880733df Mon Sep 17 00:00:00 2001
From: alberth <alberth@openttd.org>
Date: Fri, 9 Jul 2010 12:14:02 +0000
Subject: (svn r20097) -Codechange: Share constant bitset of safe level
 crossing slopes.

---
 src/rail_cmd.cpp | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

(limited to 'src/rail_cmd.cpp')

diff --git a/src/rail_cmd.cpp b/src/rail_cmd.cpp
index c61503fe6..2eb8b056f 100644
--- a/src/rail_cmd.cpp
+++ b/src/rail_cmd.cpp
@@ -408,12 +408,8 @@ CommandCost CmdBuildSingleRail(TileIndex tile, DoCommandFlag flags, uint32 p1, u
 		}
 
 		case MP_ROAD: {
-#define M(x) (1 << (x))
 			/* Level crossings may only be built on these slopes */
-			if (!HasBit(M(SLOPE_SEN) | M(SLOPE_ENW) | M(SLOPE_NWS) | M(SLOPE_NS) | M(SLOPE_WSE) | M(SLOPE_EW) | M(SLOPE_FLAT), tileh)) {
-				return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
-			}
-#undef M
+			if (!HasBit(VALID_LEVEL_CROSSING_SLOPES, tileh)) return_cmd_error(STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION);
 
 			CommandCost ret = EnsureNoVehicleOnGround(tile);
 			if (ret.Failed()) return ret;
-- 
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