protected override int OnExcute(NodeData wData)
{
NodeControlRandomSelectorContext thisContext = GetContext <NodeControlRandomSelectorContext>(wData);
int runningState = NodeState.FINISHED;
//当前选择的不是上次选择的 （执行下上次的切换方法）
if (thisContext.currentSelectedIndex != thisContext.lastSelectedIndex)
{
if (IsIndexValid(thisContext.lastSelectedIndex))
{
Node node = GetChild <Node>(thisContext.lastSelectedIndex);
node.Transition(wData);
}
thisContext.lastSelectedIndex = thisContext.currentSelectedIndex;
}
//执行下选择的子节点
if (IsIndexValid(thisContext.lastSelectedIndex))
{
Node node = GetChild <Node>(thisContext.lastSelectedIndex);
runningState = node.Execute(wData);
if (NodeState.IsFinished(runningState))
{
thisContext.lastSelectedIndex = -1;
//重新随机
thisContext.currentSelectedIndex = -1;
}
}
return(runningState);
}
protected override void OnTransition(NodeData wData)
{
NodeControlRandomSelectorContext thisContext = GetContext <NodeControlRandomSelectorContext>(wData);
Node node = GetChild <Node>(thisContext.lastSelectedIndex);
if (node != null)
{
node.Transition(wData);
}
thisContext.lastSelectedIndex = -1;
}
protected override bool OnEvaluate(NodeData wData)
{
NodeControlRandomSelectorContext thisContext = GetContext <NodeControlRandomSelectorContext>(wData);
//当前选择的还可以执行
if (IsIndexValid(thisContext.currentSelectedIndex))
{
Node node = GetChild <Node>(thisContext.currentSelectedIndex);
if (node.Evaluate(wData))
{
return(true);
}
}
//随机新的
thisContext.currentSelectedIndex = -1;
//寻找可以运行的子节点
List <Node> canRunChildNodes = new List <Node>();
int childCount = GetChildCount();
for (int i = 0; i < childCount; ++i)
{
Node node = GetChild <Node>(i);
if (node.Evaluate(wData))
{
canRunChildNodes.Add(node);
}
}
//没有可运行的
if (canRunChildNodes.Count <= 0)
{
return(false);
}
System.Random random = new System.Random();
thisContext.currentSelectedIndex = random.Next(0, canRunChildNodes.Count);
return(true);
}
