void AddStateToFSM(string stateName)
{
// 判断当前状态机是否有该状态
if (_stateInFSM.IndexOf(stateName) != -1)
{
return;
}
// 获取该状态能返回的所有条件
FieldInfo[] fields = _stateRegister.GetStateType(stateName).GetNestedType("Conditions").GetFields();
// 初始化状态节点
AIFSMData.StateTransitionGraphNode node;
node.currentState = stateName;
node.stateTransitionRules = new List <AIFSMData.StateTransitionGraphNode.StateTransitionRule>();
for (int i = 0; i < fields.Length; i++)
{
AIFSMData.StateTransitionGraphNode.StateTransitionRule rule;
rule.condition = (string)fields[i].GetValue(null);
rule.nextState = null;
node.stateTransitionRules.Add(rule);
}
//在当前状态机注册状态
_currentFSMData.stateTransitionGraphNodes.Add(node);
// 初始化Editor中与该状态相关的变量
_currentFSMData.showStateTransitionConditions.Add(true);
_stateInFSM.Add(stateName);
}
public void Init(GameObject gameObject)
{
_gameObject = gameObject;
_stateRegister = Utility.GetAIStateRegister();
// 在FSM所在GameObject添加状态脚本
if (_fsm.StateTransitionGraph != null)
{
foreach (var node in _fsm.StateTransitionGraph)
{
Type state = _stateRegister.GetStateType(node.Key);
if (state != null && !_gameObject.GetComponent(state))
{
_gameObject.AddComponent(state);
}
}
}
// 设置当前状态，并初始化
Type initStateType = _stateRegister.GetStateType(_fsm.initStateName);
if (initStateType != null)
{
_currState = (_gameObject.GetComponent(initStateType) as AIState);
_currStateName = _fsm.initStateName;
_currState.Init();
}
}
AIState GetNextState(string currentState, string condition)
{
string nextState = _fsm.StateTransitionGraph[currentState][condition];
Type nextStateScriptType = _stateRegister.GetStateType(nextState);
return(nextStateScriptType == null ? null : _gameObject.GetComponent(nextStateScriptType) as AIState);
}