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Code Issues 157 Wiki Activity

fix(track): what the review of unevenness found in the engine

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- A path of no length gave a joint with a vector across of NaN to the path
  joined to it, on any scenery, with unevenness or not. It now has no
  vector across, and so makes no joint.
- Axles no longer stray along the track. It moved vehicles against each
  other, changing the distance their couplers go by.
- The bend under an axle goes straight on past the ends of a path: the
  polynomial ran off on a short curved one, with a kick in the cab shake.
- A track left out of its rail run, where tracks are joined one way only,
  no longer walks the whole run again on every call.
- The clatter of an axle goes by the outer axle on its side of the vehicle,
  and not always by the same one, as the two can be on different tracks.
- A vertex works out the amounts once, and the foot of the ballast not at all.
This commit is contained in:
maj00r
2026-10-31 19:02:55 +01:00
parent ec2d226688
commit 371de52342
6 changed files with 105 additions and 25 deletions
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6
vehicle/DynObj.cpp
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@@ -3662,11 +3662,13 @@ bool TDynamicObject::Update(double dt, double dt1)
ctOwner->Vehicle()->DirectionGet() == DirectionGet() ? 1 : -1 ) };
for( auto &axle : m_axlesounds ) {
// on a track with dipping joints the clatter comes from them, elsewhere the axle counts a rail off itself
auto const railphase { Axle0.RailPhase( axle.offset - 0.5 * fAxleDist ) };
// by the outer axle on its side of the vehicle: the two can be on different tracks
auto const &outer { axle.offset >= 0.0 ? Axle0 : Axle1 };
auto const railphase { outer.RailPhase( axle.offset - std::copysign( 0.5 * fAxleDist, axle.offset ) ) };
auto crossed { false };
if( railphase >= 0.0 ) {
// the rails under the axle, which aren't always those under the track the vehicle is on
crossed = axle.atjoints && std::abs( railphase - axle.distance ) > 0.5 * Axle0.GetTrack()->fSoundDistance;
crossed = axle.atjoints && std::abs( railphase - axle.distance ) > 0.5 * outer.GetTrack()->fSoundDistance;
axle.distance = railphase;
}
else {