public void PlanUpdateInThread()
{
if (mNavGroup.crowd.IsDisposed)
{
return;
}
//这里进入critter的dll，然后再调用recast的dll
//目前有关crowd的方法还在研究中，没有使用
mNavGroup.crowd.Update(threadUpdateTimer);
for (int i = 0; i < mPlanners.Length; i++)
{
NavState aPlan = mPlanners[i];
if (aPlan == null || aPlan.Update())
{
continue;
}
aPlan.Exit();
if (!aPlan.Enter())
{
RemoveAgent(i);
}
}
}
//将一个agent的计算方法加入到计算循环中去
//返回的是插入的下标，返回-1说明失败了
public int AddAgent(NavState planner, NavState mover)
{
if (planner == null || mover == null)
{
return(-1);
}
for (int i = 0; i < mPlanners.Length; i++)
{
if (mPlanners[i] == null)
{
if (!planner.Enter())
{
break;
}
if (!mover.Enter())
{
planner.Exit();
break;
}
mPlanners[i] = planner;
mMovers[i] = mover;
return(i);
}
}
return(-1);
}
//在Start里面进行的初始化
public bool MakeInitialize()
{
//NavManager.ActiveManager的获取还需要一个更好的设计
if (!enabled)
{
Debug.LogError(this.name + ": is not enabled ");
return(false);
}
if (NavManager.ActiveManager == null)
{
Debug.LogError(this.name + ": no activeManager ");
return(false);
}
mNavManager = NavManager.ActiveManager;
//建立navAgent,这是真正用于移动的agent
mNavAgent = mNavManager.CreateAgent(agentGroup, transform);
mNavAgent.moveSpeed = this.moveSpeed;
if (mNavAgent == null)
{
Debug.LogError(this.name + ": agent create failed");
enabled = false;
return(false);
}
mNavAgent.rotation = transform.rotation;
mNavAgent.position = mNavAgent.GetPointSearch(transform.position);
if (mNavAgent.position.polyRef == 0)
{
mNavAgent = null;
Debug.LogError(this.name + ": take agent into navmesh failed: " + mNavAgent.position);
enabled = false;
return(false);
}
//planner是底层计算推进（可以考虑多线程）
//mover是unity位置改变，只能在主线程
planner = new NavPlanner(mNavAgent);
//用于表现，也就是修改Unity中的移动的move
//UnitySimpleMovePlan unityMovePlan = new UnitySimpleMovePlan();
UnityMoveWithFixdRoute unityMovePlan = new UnityMoveWithFixdRoute();
unityMovePlan.SetNavAgent(mNavAgent);
unityMovePlan.yAxisFreeze = this.yAxisFreeze;
mover = unityMovePlan;
mManagerIndex = mNavManager.AddAgent(planner, unityMovePlan);
if (mManagerIndex == -1)
{
Debug.LogError(this.name + ": add agent to navigation manager failed");
enabled = false;
return(false);
}
Stop();
return(true);
}
//暂停,感觉其实就是刷新一下数据
private void Suspend()
{
mPlanner.Exit();
mPlanner = NavState.Instance;
theAgent.RemoveFromCrowd();
theAgent.SetCorridorAssets(false);
theAgent.SetPathAssets(true);
theAgent.desiredVelocity = Vector3.zero;
theAgent.desiredSpeedSq = 0;
theAgent.flags &= ~NavFlag.PlannerFailed;
}
//单独刷新一个plan的外部方法(这是一种很危险的方法，尽可能不要用)
public void UpdateSinglePlan(int index)
{
NavState aPlan = mPlanners[index];
if (aPlan == null || aPlan.Update())
{
return;
}
aPlan.Exit();
if (!aPlan.Enter())
{
RemoveAgent(index);
}
}
//修改当前选定的移动计划
private void TransitionState(NavState state)
{
mPlanner.Exit();
mPlanner = state;
if (mPlanner.Enter())
{
theAgent.flags &= ~NavFlag.PlannerFailed;
}
else
{
theAgent.flags |= NavFlag.PlannerFailed;
//Debug.LogError(theAgent.transform.name + ": Planner transition failed: " + state);
}
}
//更新：寻路的计算更新循环
//这个更新是需要找一个unity上层的类来调用进行不断的更新的
public void MakeUpdate()
{
for (int i = 0; i < mPlanners.Length; i++)
{
NavState aMove = mMovers[i];
if (aMove == null || aMove.Update())
{
continue;
}
aMove.Exit();
if (!aMove.Enter())
{
RemoveAgent(i);
}
}
}