/// <summary>
/// Gets a path for lightning starting at a random point on the mesh
/// </summary>
/// <param name="points">Points list to receive points for the path</param>
public void CreateRandomLightningPath(List <Vector3> points)
{
if (meshHelper == null)
{
return;
}
// we want a path of at least 2 triangles
RaycastHit hit = new RaycastHit();
int triangleIndex;
maximumPathDistanceSquared = MaximumPathDistance * MaximumPathDistance;
meshHelper.GenerateRandomPoint(ref hit, out triangleIndex);
hit.distance = UnityEngine.Random.Range(MeshOffsetRange.Minimum, MeshOffsetRange.Maximum);
Vector3 prevPoint = hit.point + (hit.normal * hit.distance);
float pathDistanceSquared = UnityEngine.Random.Range(MinimumPathDistanceRange.Minimum, MinimumPathDistanceRange.Maximum);
pathDistanceSquared *= pathDistanceSquared;
sourcePoints.Add(MeshFilter.transform.TransformPoint(prevPoint));
int dir = (UnityEngine.Random.Range(0, 1) == 1 ? 3 : -3);
int pathLength = UnityEngine.Random.Range(PathLengthCount.Minimum, PathLengthCount.Maximum);
while (pathLength != 0)
{
triangleIndex += dir;
if (triangleIndex >= 0 && triangleIndex < meshHelper.Triangles.Length)
{
meshHelper.GetRaycastFromTriangleIndex(triangleIndex, ref hit);
}
else
{
dir = -dir;
triangleIndex += dir;
pathLength--;
continue;
}
hit.distance = UnityEngine.Random.Range(MeshOffsetRange.Minimum, MeshOffsetRange.Maximum);
Vector3 hitPoint = hit.point + (hit.normal * hit.distance);
float distanceSquared = (hitPoint - prevPoint).sqrMagnitude;
if (distanceSquared > maximumPathDistanceSquared)
{
break;
}
else if (distanceSquared >= pathDistanceSquared)
{
prevPoint = hitPoint;
sourcePoints.Add(MeshFilter.transform.TransformPoint(hitPoint));
pathLength--;
pathDistanceSquared = UnityEngine.Random.Range(MinimumPathDistanceRange.Minimum, MinimumPathDistanceRange.Maximum);
pathDistanceSquared *= pathDistanceSquared;
}
}
}
