public TrainCar(TrainCarDefinition definition)
{
m_definition = definition;
m_visual = Object.Instantiate(m_definition.Visual);
m_signedSpeed = 0;
InitialiseAnimations();
m_bogies = new Bogie[definition.Bogies.Length];
m_fakeBogieIndex = -1;
for (int bogieIndex = 0; bogieIndex < definition.Bogies.Length; bogieIndex++)
{
/*
* m_bogies[bogieIndex] = new Bogie(bogieIndex, definition.Bogies[bogieIndex], GroupNode);
* if (m_bogies[bogieIndex].Transform == null)
* {
* Debug.Assert(m_fakeBogieIndex < 0);
* m_fakeBogieIndex = bogieIndex;
* }
*
* m_debugWheelsetMarkers[bogieIndex] = new TransformNode[2];
* for (int wheelsetIndex = 0; wheelsetIndex < 2; wheelsetIndex++)
* {
* var debugMarker = new TransformNode("DebugWheelsetMarker");
* debugMarker.AddChild(GeometryNode.CreateCube(0.25f, Colour.White, null));
* m_debugWheelsetMarkers[bogieIndex][wheelsetIndex] = debugMarker;
* debugMarker.Enabled = false;
* GroupNode.AddChild(debugMarker);
* }
* */
}
}
public void TimestepUpdate(Bogie previousBogie, float deltaPosition)
{
if (FirstWheelsetSegment == null || LastWheelsetSegment == null)
{
return;
}
SavePreviousParameters();
// Move first wheelset to keep up with previous bogie
Vector3 lastWheelsetPosition = previousBogie.LastWheelsetSegment.GetCurvePositionInWorldSpace(previousBogie.LastWheelsetSegmentT);
Vector3 firstWheelsetPosition = FirstWheelsetSegment.GetCurvePositionInWorldSpace(FirstWheelsetSegmentT);
float wantedDistance = DistanceFromLastWheelsetOfPreviousBogieToFirstWheelset(previousBogie);
float actualDistance = (lastWheelsetPosition - firstWheelsetPosition).magnitude;
float distanceToMove = FirstWheelsetDirectionOfT * (actualDistance - wantedDistance);
FirstWheelsetSegment = FirstWheelsetSegment.MoveSignedDistance(distanceToMove, ref FirstWheelsetSegmentT, ref FirstWheelsetDirectionOfT);
if (FirstWheelsetSegment == null)
{
return;
}
// Move last wheelset to keep up with first wheelset
UpdateLastWheelsetPosition();
if (LastWheelsetSegment == null)
{
return;
}
WheelsetsTimeStepUpdate(deltaPosition);
}
public void PutOnTrack(Bogie previousBogie)
{
Debug.Assert(previousBogie != null);
float distance = DistanceFromLastWheelsetOfPreviousBogieToFirstWheelset(previousBogie) * -previousBogie.LastWheelsetDirectionOfT;
FirstWheelsetSegmentT = previousBogie.LastWheelsetSegmentT;
FirstWheelsetDirectionOfT = previousBogie.LastWheelsetDirectionOfT;
FirstWheelsetSegment = previousBogie.LastWheelsetSegment.MoveSignedDistance(distance, ref FirstWheelsetSegmentT, ref FirstWheelsetDirectionOfT);
PutLastWheelsetOnTrack();
}
// TODO this is a constant for the train car (i.e. can be in definition)
private float DistanceFromLastWheelsetOfPreviousBogieToFirstWheelset(Bogie previousBogie)
{
return(Definition.DistanceToFront - Definition.Wheelsets[0].SignedDistanceToBogie -
previousBogie.Definition.DistanceToFront +
previousBogie.Definition.Wheelsets[previousBogie.Definition.Wheelsets.Length - 1].SignedDistanceToBogie);
}
