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(svn r21882) -Codechange: make use of the fact that vehicle's Z position can change only if it has GVF_GOINGUP_BIT or GVF_GOINGDOWN_BIT set

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smatz 2011-01-21 16:51:56 +00:00
parent 2a2363e819
commit e860075a16
1 changed files with 2 additions and 6 deletions
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8
src/ground_vehicle.hpp
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@ -151,12 +151,8 @@ struct GroundVehicle : public SpecializedVehicle<T, Type> {
*/ */
FORCEINLINE void UpdateZPosition() FORCEINLINE void UpdateZPosition()
{ {
/* Flat tile, tile with two opposing corners raised and tile with 3 corners /* Vehicle's Z position can change only if it has GVF_GOINGUP_BIT or GVF_GOINGDOWN_BIT set */
* raised can never have sloped track ... */ if (HasBit(this->gv_flags, GVF_GOINGUP_BIT) || HasBit(this->gv_flags, GVF_GOINGDOWN_BIT)) {
static const uint32 never_sloped = 1 << SLOPE_FLAT | 1 << SLOPE_EW | 1 << SLOPE_NS | 1 << SLOPE_NWS | 1 << SLOPE_WSE | 1 << SLOPE_SEN | 1 << SLOPE_ENW;
/* ... unless it's a bridge head. */
if (IsTileType(this->tile, MP_TUNNELBRIDGE) || // the following check would be true for tunnels anyway
(T::From(this)->TileMayHaveSlopedTrack() && !HasBit(never_sloped, GetTileSlope(this->tile, NULL)))) {
this->z_pos = GetSlopeZ(this->x_pos, this->y_pos); this->z_pos = GetSlopeZ(this->x_pos, this->y_pos);
} else { } else {
/* Verify that assumption. */ /* Verify that assumption. */