You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
2.9 KiB
92 lines
2.9 KiB
/************************************************************************************
|
|
|
|
Copyright (c) Facebook Technologies, LLC and its affiliates. All rights reserved.
|
|
|
|
See SampleFramework license.txt for license terms. Unless required by applicable law
|
|
or agreed to in writing, the sample code is provided “AS IS” WITHOUT WARRANTIES OR
|
|
CONDITIONS OF ANY KIND, either express or implied. See the license for specific
|
|
language governing permissions and limitations under the license.
|
|
|
|
************************************************************************************/
|
|
|
|
using UnityEngine;
|
|
using UnityEngine.Assertions;
|
|
|
|
namespace OculusSampleFramework
|
|
{
|
|
public abstract class TrainCarBase : MonoBehaviour
|
|
{
|
|
private static Vector3 OFFSET = new Vector3(0f, 0.0195f, 0f);
|
|
private const float WHEEL_RADIUS = 0.027f;
|
|
private const float TWO_PI = Mathf.PI * 2.0f;
|
|
|
|
[SerializeField] protected Transform _frontWheels = null;
|
|
[SerializeField] protected Transform _rearWheels = null;
|
|
[SerializeField] protected TrainTrack _trainTrack = null;
|
|
[SerializeField] protected Transform[] _individualWheels = null;
|
|
|
|
public float Distance { get; protected set; }
|
|
protected float scale = 1.0f;
|
|
|
|
private Pose _frontPose = new Pose(), _rearPose = new Pose();
|
|
|
|
public float Scale
|
|
{
|
|
get { return scale; }
|
|
set { scale = value; }
|
|
}
|
|
|
|
protected virtual void Awake()
|
|
{
|
|
Assert.IsNotNull(_frontWheels);
|
|
Assert.IsNotNull(_rearWheels);
|
|
Assert.IsNotNull(_trainTrack);
|
|
Assert.IsNotNull(_individualWheels);
|
|
}
|
|
|
|
public void UpdatePose(float distance, TrainCarBase train, Pose pose)
|
|
{
|
|
// distance could be negative; add track length to it in case that happens
|
|
distance = (train._trainTrack.TrackLength + distance) % train._trainTrack.TrackLength;
|
|
if (distance < 0)
|
|
{
|
|
distance += train._trainTrack.TrackLength;
|
|
}
|
|
|
|
var currentSegment = train._trainTrack.GetSegment(distance);
|
|
var distanceInto = distance - currentSegment.StartDistance;
|
|
|
|
currentSegment.UpdatePose(distanceInto, pose);
|
|
}
|
|
|
|
protected void UpdateCarPosition()
|
|
{
|
|
UpdatePose(Distance + _frontWheels.transform.localPosition.z * scale,
|
|
this, _frontPose);
|
|
UpdatePose(Distance + _rearWheels.transform.localPosition.z * scale,
|
|
this, _rearPose);
|
|
|
|
var midPoint = 0.5f * (_frontPose.Position + _rearPose.Position);
|
|
var carLookDirection = _frontPose.Position - _rearPose.Position;
|
|
|
|
transform.position = midPoint + OFFSET;
|
|
transform.rotation = Quaternion.LookRotation(carLookDirection, transform.up);
|
|
_frontWheels.transform.rotation = _frontPose.Rotation;
|
|
_rearWheels.transform.rotation = _rearPose.Rotation;
|
|
}
|
|
|
|
protected void RotateCarWheels()
|
|
{
|
|
// divide by radius to get angle
|
|
float angleOfRot = (Distance / WHEEL_RADIUS) % TWO_PI;
|
|
|
|
foreach (var individualWheel in _individualWheels)
|
|
{
|
|
individualWheel.localRotation = Quaternion.AngleAxis(Mathf.Rad2Deg * angleOfRot,
|
|
Vector3.right);
|
|
}
|
|
}
|
|
|
|
public abstract void UpdatePosition();
|
|
}
|
|
}
|