//取得移動曲線上的點
public Vector3 GetPointPos(CartStopPoint current, CartStopPoint end, float t)
{
return(current.transform.position * Mathf.Pow((1 - t), 3) +
3 * current.rightLerpHandle.position * t * Mathf.Pow((1 - t), 2) +
3 * end.leftLerpHadle.position * t * t * (1 - t) +
end.transform.position * t * t * t);
}
void FixedUpdate()
{
//往下一個點移動
if (!isStopping)
{
//取的目前與下一個點的t
t = (t + Time.deltaTime * speed) % 1;
//取得移動點
Vector3 nextMovePoint = stopsManager.GetPointPos(currentStop, nextStop, t);
if (useTerrainHeight)
{
nextMovePoint.y = Terrain.activeTerrain.SampleHeight(nextMovePoint);
}
//面向移動方向
Vector3 dir = nextMovePoint - transform.position;
//transform.rotation = Quaternion.Lerp(transform.rotation, Quaternion.LookRotation(dir.normalized, transform.up), t);
Vector3 cartRotation = Quaternion.Lerp(transform.rotation, Quaternion.LookRotation(dir.normalized, transform.up), Time.deltaTime * rotateSpeed).eulerAngles;
//限制x軸轉動幅度
cartRotation.x = Mathf.Clamp(cartRotation.x, -5, 5);
transform.eulerAngles = cartRotation;
//移動
transform.position = nextMovePoint;
//已到達下個點
if (t >= 0.99f)
{
t = 0;
//下一個目的點
if (nextStop.doStop)
{
isStopping = true;
}
currentStop = nextStop;
nextStop = stopsManager.GetNextStop(currentStop);
}
}
}
//取得下個站點
public CartStopPoint GetNextStop(CartStopPoint current)
{
int currentIndex = stopPoints.FindIndex(x => x == current);
return(stopPoints[(currentIndex + 1) % stopPoints.Count]);
}
