public void PlaceLeft()
{
TrackSection section = null;
if (trackLayer.CurrentSection != null)
{
section = trackLayer.PlaceTrack(length, -angle);
}
else
{
RaycastHit hit;
if (FirstPersonController.Main.RaycastCameraForward(out hit, 1000.0f, terrainMask))
{
section = trackLayer.StartTrack(hit.point + Vector3.up * 0.01f, GetNewTrackRotation(hit),
length, -angle);
}
}
if (section != null)
{
TrackFactory.Instance.PlaceAndRegisterSection(section, true);
DeselectIfConnected();
}
}
private bool TryPlaceTrack(TrackSection from, bool fromEnd, TrackSection to, bool toEnd)
{
Vector3 intersection;
fromPoint = fromEnd ? from.EndPosition : from.Position;
toPoint = toEnd ? to.EndPosition : to.Position;
fromRotation = fromEnd ? from.EndRotation : Helper.InvertTrackRotation(from.Rotation);
// Note that this is pointing towards the section being build
toRotation = toEnd ? to.EndRotation : Helper.InvertTrackRotation(to.Rotation);
if (Helper.LineLineIntersection(out intersection,
fromPoint,
fromRotation * Vector3.forward,
toPoint,
toRotation * Vector3.forward))
{
float d1, d2, shortestDistance;
d1 = shortestDistance = Vector3.Distance(intersection, fromPoint);
d2 = Vector3.Distance(intersection, toPoint);
if (d2 < shortestDistance)
{
shortestDistance = d2;
}
// Calculate curvature
float curve = 180.0f - Quaternion.Angle(fromRotation, toRotation);
// Check if the curve should go left or right
var cross = Vector3.Cross(fromRotation * Vector3.forward, (toPoint - fromPoint));
if (cross.y < 0)
{
// Go left
curve = -curve;
}
// Calculate straight length
var straightLength = Mathf.Max(d1, d2) - shortestDistance;
trackLayer.Reposition(from, !fromEnd);
if (d1 == d2)
{
// Place only curve
trackLayer.PlaceTrack(CalculateCurveLength(curve, 0, 0), curve);
TrackFactory.Instance.PlaceAndRegisterSection(trackLayer.CurrentSection, true);
}
else if (shortestDistance == d1)
{
// Place curve first, then straight
trackLayer.PlaceTrack(CalculateCurveLength(curve, 0, straightLength), curve);
TrackFactory.Instance.PlaceAndRegisterSection(trackLayer.CurrentSection);
trackLayer.PlaceTrack(straightLength);
TrackFactory.Instance.PlaceAndRegisterSection(trackLayer.CurrentSection, true);
}
else if (shortestDistance == d2)
{
// Place straight first, then curve
trackLayer.PlaceTrack(straightLength);
TrackFactory.Instance.PlaceAndRegisterSection(trackLayer.CurrentSection);
trackLayer.PlaceTrack(CalculateCurveLength(curve, straightLength, 0), curve);
TrackFactory.Instance.PlaceAndRegisterSection(trackLayer.CurrentSection, true);
}
trackLayer.Reposition(null, false);
return(true);
}
// TODO: Add in-line check
else if (Quaternion.Angle(fromRotation, Helper.InvertTrackRotation(toRotation)) < 0.5f)
{
trackLayer.Reposition(fromSection, !fromEnd);
trackLayer.PlaceTrack(Vector3.Distance(fromPoint, toPoint));
TrackFactory.Instance.PlaceAndRegisterSection(trackLayer.CurrentSection, true);
return(true);
}
return(false);
}
