/// <summary>
/// 由负责添加的类进行仿真上下文同步,内部进行了RoadLane注册
/// </summary>
/// <param name="rl"></param>
internal void AddLane(Lane rl)
{
if (rl != null)
{
//防止添加了较多的车道
if (this.Lanes.Count == SimSettings.iMaxLanes)
{
throw new ArgumentOutOfRangeException("无法添加超过" + SimSettings.iMaxLanes + "个车道");
}
rl.Container = this; //两行代码一定不要高反了
RoadNet.GetInstance().lanes.Add(rl.GetHashCode(), rl);
// rl.Register();// //同步仿真上下文的数据记录
//按照laneRanking 和laneType排序，插入到合适的位置并且给予恰当的
//laneRanking便于进行坐标索引
int i = this._lanes.Count;
if (i == 0) //第一个要添加的车道
{
this._lanes.Add(rl);
rl.Rank = 1;
}
while (i-- >= 1) //个数超过一个车道进行插入操作
{
Lane rLane = this._lanes[i]; //i已经变小了一个数
if (rLane.laneType > rl.laneType)
{
//将后续大的laneRanking的值增1
rLane.Rank += 1;
if (i == 0)
{
this.Lanes.Insert(0, rl); //插入最右边的车道
rl.Rank = 1;
}
} //rank最大的一个相同车道
if (rLane.laneType <= rl.laneType)
{ //插入新的lane，当前索引是i，要插入之后，索引应当是i+1
this._lanes.Insert(i + 1, rl);
//rl.Rank = i+2;//rank 比索引大1
rl.Rank = i + 2; // this.Lanes.Count;
break;
}
}
//this.ilength =端点的长度//端点坐标之间的距离
}
else
{
throw new ArgumentNullException();
}
}
/// <summary>
/// 由负责删除的类进行仿真上下文同步
/// </summary>
/// <param name="rl"></param>
//[System.Obsolete("应当根据实际的情况确定删除车道需要的函数类型")]
internal void RemoveLane(Lane rl)
{
if (rl != null)
{
for (int i = rl.Rank; i < this.Lanes.Count; i++)
{
this.Lanes[i].Rank -= 1;
}
this._lanes.Remove(rl); //第rank个车道是第rank-1个类型
//同步仿真上下文的数据记录
RoadNet.GetInstance().lanes.Remove(rl.GetHashCode()); //进行反注册
}
else
{
throw new ArgumentNullException();
}
}
/// <summary>
/// 在转弯的时候调用，根据车辆路径，寻找车辆要进入的下一条车道（左右转、直行）。从起始位置出发，前进iAheadSpace个间距时距
/// </summary>
internal virtual void Update()
{
if (this.mobile == null)
{
ThrowHelper.ThrowArgumentException("a track has no mobile before updating ,assigned one to it through constructor internal Track(MobileEntity me) ");
}
if (mobile.Container.EntityType == EntityType.XNode)
{
return;
}
Lane currLane = mobile.Container as Lane;
//get its tolane
var currWay = currLane.Container as Way;
var nextWay = this.mobile.Route.FindNext(currWay);
//shape end means a point on a narrow like "---->"
//a signal light is playing at a lane's shape end
this.FromLane = currLane;
this.opFrom = currLane.Shape.End;
if (nextWay == null) //a moblie is reaching its destination
{
this.ToLane = null;
// this.opTo = OxyzPointF.Default;
this.opTo = currLane.Shape.End;
return;
}
int iTurn = mobile.Route.GetDirection(currWay);
//车辆直行
switch (iTurn)
{
case 0:
//go straight foword
if (nextWay.Lanes.Count < currLane.Rank) //next way has less lanes than a mobiles'current one
{
int iIdx = new Random(1).Next(nextWay.Lanes.Count) - 1;
iIdx = iIdx < 0?0:iIdx;
this.ToLane = nextWay.Lanes[iIdx];
}
else //otherwise 目标车道数大于于本车道数
{
this.ToLane = nextWay.Lanes[currLane.Rank - 1];
}
break;
case 1: //turn right
//the outside lane is rightful for a mobile obeying traffic regulations
this.ToLane = nextWay.Lanes[nextWay.Lanes.Count - 1];
break;
case -1: //turn left
// int iIndex = new Random(1).Next(nextWay.Lanes.Count) - 1;
this.ToLane = nextWay.Lanes[0];
break;
case 2: //turn back
//while truning backward a inside lane is rightful
this.ToLane = nextWay.Lanes[0];
break;
}
//shape start means a point at the end of a narrow like "---->"
this.opTo = this.ToLane.Shape.Start;
}
/// <summary>
/// get left and right driving context
/// </summary>
/// <param name="lane">lane</param>
/// <param name="lanetype">lanetype of current lane</param>
/// <param name="iCurrentStart">headway of current mobile index</param>
/// <param name="iCurrentEnd">rear of current mobile index</param>
/// <param name="dc">out parameters</param>
private void GetSidesContext(Lane lane, LaneType lanetype, int iCurrentStart, int iCurrentEnd, ref DriveCtx dc)
{
//to make sure current lane got a lefe lane
if (lane == null)
{
return;
}
//headway on the lane
int iFrontHeadWay = -1;
int iRearHeadWay = -1;
int iFrontSpeed = -1;
int iRearSpeed = -1;
//there's no mobile on lane
if (lane.Mobiles.Count > 0)
{
//there's mobiles on lane
int iLeastGap = lane.Length;
int iTempGap = iLeastGap;
MobileOBJ mobile = null;
//loop to find two adjacent mobiles on the lane.one rear,one ahead of the current mobile
foreach (var element in lane.Mobiles)
{
iTempGap = lane.Shape.GetIndex(element.Shape.End) - iCurrentStart;
//make it positive,to find the nearest mobile on the left lane
if (Math.Abs(iTempGap) < Math.Abs(iLeastGap))
{
iLeastGap = iTempGap;
mobile = element;
}
}
//nearest mobile on the left is at the front
if (iLeastGap >= 0)
{
iFrontHeadWay = iLeastGap;
iFrontSpeed = mobile.iSpeed;
var rearMobile = mobile.Rear;
if (rearMobile != null)
{
iRearHeadWay = iCurrentEnd - lane.Shape.GetIndex(rearMobile.Shape.Start);
iRearSpeed = rearMobile.iSpeed;
}
} //nearest mobile on the left is at the behind
else
{
//make it postive
iRearHeadWay = Math.Abs(iLeastGap);
iRearSpeed = mobile.iSpeed;
var frontMobile = mobile.Front;
if (frontMobile != null)
{
iFrontHeadWay = lane.Shape.GetIndex(frontMobile.Shape.End) - iCurrentStart;
iFrontSpeed = mobile.Front.iSpeed;
}
}
}
else
{
iFrontHeadWay = lane.Length - iCurrentStart;
iRearHeadWay = iCurrentEnd;
}
//make driving observation true
switch (lanetype)
{
case LaneType.Right:
dc.iRightFrontHeadWay = iFrontHeadWay;
dc.iRightFrontSpeed = iFrontSpeed;
dc.iRightRearHeadWay = iRearHeadWay;
dc.iRightRearSpeed = iRearSpeed;
break;
case LaneType.Left:
dc.iLeftFrontHeadWay = iFrontHeadWay;
dc.iLeftFrontSpeed = iFrontSpeed;
dc.iLeftRearHeadWay = iRearHeadWay;
dc.iLeftRearSpeed = iRearSpeed;
break;
default:
throw new ArgumentException("parameter lanetype error!");
break;
}
}