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

release/1.1
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
View File

@ -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;

5
src/road_cmd.cpp
View File

@ -52,11 +52,6 @@ bool RoadVehiclesAreBuilt()
return false;
}
#define M(x) (1 << (x))
/* Level crossings may only be built on these slopes */
static const uint32 VALID_LEVEL_CROSSING_SLOPES = (M(SLOPE_SEN) | M(SLOPE_ENW) | M(SLOPE_NWS) | M(SLOPE_NS) | M(SLOPE_WSE) | M(SLOPE_EW) | M(SLOPE_FLAT));
#undef M
/* Invalid RoadBits on slopes */
static const RoadBits _invalid_tileh_slopes_road[2][15] = {
/* The inverse of the mixable RoadBits on a leveled slope */

5
src/slope_type.h
View File

@ -79,6 +79,11 @@ enum Slope {
};
DECLARE_ENUM_AS_BIT_SET(Slope)
#define M(x) (1 << (x))
/** Constant bitset with safe slopes for building a level crossing. */
static const uint32 VALID_LEVEL_CROSSING_SLOPES = M(SLOPE_SEN) | M(SLOPE_ENW) | M(SLOPE_NWS) | M(SLOPE_NS) | M(SLOPE_WSE) | M(SLOPE_EW) | M(SLOPE_FLAT);
#undef M
/**
* Enumeration for Foundations.