protected void RemoveState(FiniteState state)
{
if (_allStates.ContainsKey(state.Name))
{
_allStates.Remove(state.Name);
}
}
protected void AddState(FiniteState state, bool bDefault = false)
{
_allStates[state.Name] = state;
state.Owner = this;
if (bDefault)
{
_defaultState = state;
}
}
public void OnFixUpdate()
{
if (NextState != null)
{
ChangeState(NextState);
NextState = null;
}
if (CurrentState != null)
{
CurrentState.OnFixUpdate(_context);
}
}
// 发送事件，触发状态迁移
public void SendEvent(string eventName)
{
Debug.Assert(NextState == null, "Next State already exist!");
foreach (FiniteStateTransition transition in _allTransitions)
{
FiniteState nextState;
if (TryGetNextStateByEventName(eventName, transition, out nextState))
{
// ChangeState(nextState);
NextState = nextState;
break;
}
}
}
// 状态迁移
private void ChangeState(FiniteState newState)
{
if (newState == CurrentState)
{
return;
}
if (CurrentState != null)
{
CurrentState.OnExit(_context);
}
CurrentState = newState;
if (CurrentState != null)
{
CurrentState.OnEnter(_context);
}
}
// 根据事件名称，从状态迁移表中，取出下一个状态
private bool TryGetNextStateByEventName(string eventName, FiniteStateTransition transition, out FiniteState state)
{
state = null;
if (!eventName.Equals(transition.EventName))
{
return(false);
}
if (CurrentState == null || !CurrentState.Name.Equals(transition.LastStateName))
{
return(false);
}
return(_allStates.TryGetValue(transition.NextStateName, out state));
}
