//管理目标位置，有比较的话需要对这个目标进行变更
private bool HandleNormalPlanning(bool hasNewGoal)
{
if (hasNewGoal || !mGoalInRange && theAgent.IsNear(theAgent.desiredPosition.point, mTarget.point))
{
//在不变更移动计划的时候，看看能不能走
if (!SetLocalTarget())
{
if (theAgent.PlanPath(theAgent.desiredPosition, theAgent.plannerGoal) <= 0)
{
Debug.LogError(string.Format("{0}: Path replan failed. Position: {1}, Goal: {2}"
, theAgent.transform.name, theAgent.desiredPosition.ToString(), theAgent.plannerGoal.ToString()));
return(false);
}
return(SetLocalTarget());
}
}
else if (mGoalInRange)
{
//这个方法根据CritterAI原有的架构来做的，由于这个部分已经被魔改，所以此处可能需要很慎重处理
if (mAtGoalState == StateNormal)
{
if (Vector3Util.IsInRange(theAgent.desiredPosition.point
, theAgent.plannerGoal.point, 0.12f, theAgent.heightTolerence))
{
mAtGoalState = StateInRange;
theAgent.RemoveFromCrowd();
CrowdAgentParams config = theAgent.crowdConfig;
config.maxSpeed = 0;
theAgent.crowdAgent = theAgent.navGroup.crowd.AddAgent(theAgent.plannerGoal.point, config);
theAgent.flags &= ~NavFlag.CrowdConfigUpdated;
}
}
}
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;
}
//实际上这是一个不断开闭的过程
//循环过程中也会不断Enter
public override bool Enter()
{
if (theAgent.navGroup.query == null)
{
return(false);
}
//在导航网格上找到自己的位置
NavmeshPoint pos = theAgent.GetPointSearch(theAgent.position);
if (pos.polyRef == 0)
{
//Debug.LogError(string.Format("{0}: Could not constrain position to navigation mesh. {1}", theAgent.transform.name, pos.ToString()));
return(false);
}
//在导航网格上找到目标的位置
NavmeshPoint goal = theAgent.GetPointSearch(theAgent.goal);
if (goal.polyRef == 0)
{
//Debug.LogError(string.Format("{0}: Could not constrain goal to navigation mesh. {1}", theAgent.transform.name, goal.ToString()));
return(false);
}
theAgent.RemoveFromCrowd();
theAgent.SetCorridorAssets(true);
theAgent.SetPathAssets(true);
//agent自己寻路，发现没有路就报错
if (theAgent.PlanCorridor(pos, goal) <= 0)
{
//Debug.LogError(string.Format("{0}: Could not plan corridor on enter.", theAgent.transform.name));
theAgent.flags &= ~NavFlag.CorridorInUse;
return(false);
}
//存储寻路之后的结果
theAgent.desiredPosition = theAgent.corridor.Position;
theAgent.plannerGoal = theAgent.corridor.Target;
theAgent.flags &= ~(NavFlag.HasNewPosition | NavFlag.HasNewGoal);
//设定速度和重置计数器
mSpeed = Mathf.Sqrt(theAgent.desiredSpeedSq);
mOptimizationTimer = OptimizationFrequency;
return(true);
}