/// <summary>
/// Configure this component to <paramref name="parent"/> and configures
/// the wheel properties given shapes and meshes.
/// </summary>
/// <param name="parent">Parent game object, will become TrackWheel.Frame.Parent.</param>
/// <param name="positionAlongRotationAxis">Position offset along the rotation axis. Default: 0.</param>
/// <param name="nameModelPredicate">Match name vs. model - true if name match the model, otherwise false.</param>
/// <returns>TrackWheel component if added, otherwise null (throws if <paramref name="parent"/> already has a TrackWheel component)</returns>
public TrackWheel Configure(GameObject parent,
float positionAlongRotationAxis = 0.0f,
Func <string, TrackWheelModel, bool> nameModelPredicate = null)
{
// What if we don't have a rigid body in hierarchy? Initialize will fail.
m_rb = parent.GetComponentInParent <RigidBody>();
m_frame.SetParent(parent);
Radius = Tire.FindRadius(parent, true);
// Up is z.
var upVector = parent.transform.parent != null?
parent.transform.parent.TransformDirection(Vector3.up) :
Vector3.up;
var rotationAxis = Tire.FindRotationAxisWorld(parent);
m_frame.Rotation = Quaternion.FromToRotation(Vector3.up, rotationAxis);
m_frame.Rotation *= Quaternion.Euler(0, Vector3.Angle(m_frame.Rotation * Vector3.forward, upVector), 0);
m_frame.LocalPosition = positionAlongRotationAxis * Vector3.up;
var model = TrackWheelModel.Roller;
if (TryFindModel(parent.name, ref model, nameModelPredicate) ||
TryFindModel(RigidBody?.name, ref model, nameModelPredicate))
{
Model = model;
}
else
{
Model = TrackWheelModel.Roller;
}
return(this);
}
private void Reset()
{
if (RigidBody == null)
{
Debug.LogError("Component: TrackWheel requires RigidBody component.", this);
}
else
{
Radius = Tire.FindRadius(RigidBody, true);
m_frame.SetParent(RigidBody.gameObject);
// Up is z.
var upVector = RigidBody.transform.parent != null?
RigidBody.transform.parent.TransformDirection(Vector3.up) :
Vector3.up;
var rotationAxis = Tire.FindRotationAxisWorld(RigidBody);
m_frame.Rotation = Quaternion.FromToRotation(Vector3.up, rotationAxis);
m_frame.Rotation *= Quaternion.Euler(0, Vector3.Angle(m_frame.Rotation * Vector3.forward, upVector), 0);
// This should be rotation axis anchor point.
m_frame.LocalPosition = Vector3.zero;
if (name.ToLower().Contains("sprocket"))
{
Model = TrackWheelModel.Sprocket;
}
else if (name.ToLower().Contains("idler"))
{
Model = TrackWheelModel.Idler;
}
else
{
Model = TrackWheelModel.Roller;
}
}
}
