public void BuildTrack()
{
// Delete all of the children of the track holding game object
List <Component> childComponents = new List <Component>(GetComponentsInChildren(typeof(Transform)));
List <Transform> childTransforms = childComponents.ConvertAll(c => (Transform)c);
childTransforms.Remove(transform);
foreach (Transform childTransform in childTransforms)
{
if (childTransform.gameObject.name == "left rail" || childTransform.gameObject.name == "right rail")
{
DestroyImmediate(childTransform.gameObject.GetComponent <MeshFilter>().sharedMesh);
}
DestroyImmediate(childTransform.gameObject);
}
// Get all of the spline node information from the splineRoot
Transform[] splineNodeTransforms = GetTransforms();
if (splineNodeTransforms.Length < 2)
{
return;
}
// Build the spline interpolator object
SplineInterpolator interp = GetComponent(typeof(SplineInterpolator)) as SplineInterpolator;
SetupSplineInterpolator(interp, splineNodeTransforms);
interp.StartInterpolation(null, eRotationMode.PATH_ANGLE, eWrapMode.ONCE);
// Build a list of affine transformation matricies that represent the track sections
List <Matrix4x4> leftTrackPolyline = new List <Matrix4x4>();
List <Matrix4x4> rightTrackPolyline = new List <Matrix4x4>();
float tMax = AutoClose ? splineNodeTransforms.Length : splineNodeTransforms.Length - 1;
tMax += 2 * resolution;
for (float t = 0; t < tMax; t += resolution)
{
Transform trans = new GameObject().transform;
trans.position = interp.GetHermiteAtTime(t);
trans.rotation = interp.GetPathAngleAtTime(t);
leftTrackPolyline.Add(trans.localToWorldMatrix * LeftRailPrefab.transform.localToWorldMatrix);
rightTrackPolyline.Add(trans.localToWorldMatrix * RightRailPrefab.transform.localToWorldMatrix);
//Debug.Log(trans.localToWorldMatrix);
DestroyImmediate(trans.gameObject);
}
// Generate the rails
GameObject leftRail = new GameObject();
Mesh leftMesh = new Mesh();
leftRail.name = "left rail";
leftRail.transform.parent = transform;
leftRail.AddComponent <MeshFilter>();
leftRail.GetComponent <MeshFilter>().sharedMesh = leftMesh;
leftRail.AddComponent <MeshRenderer>();
leftRail.GetComponent <MeshRenderer> ().sharedMaterial = LeftRailPrefab.GetComponent <MeshRenderer>().sharedMaterial;
MeshExtrusion.ExtrudeMesh(LeftRailPrefab.GetComponent <MeshFilter>().sharedMesh, leftRail.GetComponent <MeshFilter>().sharedMesh, leftTrackPolyline.ToArray(), false);
GameObject rightRail = new GameObject();
Mesh rightMesh = new Mesh();
rightRail.name = "right rail";
rightRail.transform.parent = transform;
rightRail.AddComponent <MeshFilter>();
rightRail.GetComponent <MeshFilter>().sharedMesh = rightMesh;
rightRail.AddComponent <MeshRenderer>();
rightRail.GetComponent <MeshRenderer> ().sharedMaterial = RightRailPrefab.GetComponent <MeshRenderer>().sharedMaterial;
MeshExtrusion.ExtrudeMesh(RightRailPrefab.GetComponent <MeshFilter>().sharedMesh, rightRail.GetComponent <MeshFilter>().sharedMesh, rightTrackPolyline.ToArray(), false);
// Generate the cross bars
float distSinceLastCrossbar = 0;
float cbRes = resolution / 5.0f;
for (float t = cbRes; t < tMax; t += cbRes)
{
Vector3 dP = interp.GetHermiteAtTime(t) - interp.GetHermiteAtTime(t - cbRes);
distSinceLastCrossbar += dP.magnitude;
if (distSinceLastCrossbar >= beamDistance)
{
GameObject crossbar = Instantiate(crossBeamPrefab);
crossbar.transform.parent = transform;
crossbar.transform.position = interp.GetHermiteAtTime(t);
crossbar.transform.rotation = interp.GetPathAngleAtTime(t);
crossbar.transform.position += crossbar.transform.right * crossBeamPrefab.transform.position.x;
crossbar.transform.position += crossbar.transform.up * crossBeamPrefab.transform.position.y;
crossbar.transform.position += crossbar.transform.forward * crossBeamPrefab.transform.position.z;
crossbar.transform.rotation *= crossBeamPrefab.transform.rotation;
distSinceLastCrossbar -= beamDistance;
}
}
}
