protected override BTNodeStatus OnUpdate(IAgent agent, Blackboard bb)
{
//内部条件检测未通过
if (InternalCondition(agent, bb) == false)
{
return(BTNodeStatus.Failed);
}
//第一次执行此行为
if (mCurrentState == ActionStateEnum.FirstIn)
{
OnEnter(agent, bb);
mCurrentState = ActionStateEnum.NotFirstIn;
}
BTNodeStatus status = BTNodeStatus.Finished;
//非第一次执行此行为
if (mCurrentState == ActionStateEnum.NotFirstIn)
{
status = OnExcute(agent, bb);
}
//若当前行为为持续性行为
if (status == BTNodeStatus.Running)
{
return(status);//返回 Running
}
//当前行为已结束（非持续性行为）
else
{
//善后工作（执行退出 + 标志位重置）
OnReset(agent, bb);
return(status);//返回 Finished
}
}
protected override void OnReset(IAgent agent, Blackboard bb)
{
if (mCurrentState == ActionStateEnum.NotFirstIn)
{
OnExit(agent, bb); //执行退出
mCurrentState = ActionStateEnum.FirstIn; //标志位重置
}
}
private void BecomeState(ActionStateEnum stateEnum, Action action)
{
if (_currentState != stateEnum)
{
_currentState = stateEnum;
action();
}
}
public void SetSuccess()
{
status = ActionStateEnum.NoError;
result = string.Empty;
}
public void SetFail(ActionStateEnum errCode, string errorMessage)
{
this.status = errCode;
result = errorMessage;
}