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(svn r20097) -Codechange: Share constant bitset of safe level crossing slopes.

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alberth
2010-07-09 12:14:02 +00:00
parent 72bfda4634
commit 82fc340a0a
3 changed files with 6 additions and 10 deletions
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6
src/rail_cmd.cpp
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@@ -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;