/// <summary>
/// 把系统回滚到上一个状态并演绎
/// </summary>
public static void SteadyBackward()
{
lock (typeof(RollbackManager))
{
// 还有得回滚且不在动画时才滚
if (RollbackManager.forwardStack.Count > 0 &&
Director.RunMana.GameState(Director.RunMana.CallStack) != StackMachineState.WaitAnimation)
{
// 如果还未回滚过就要将自己先移除
if (RollbackManager.IsRollingBack == false && RollbackManager.forwardStack.Count > 1)
{
var selfStep = RollbackManager.forwardStack.Last();
RollbackManager.forwardStack.RemoveLast();
RollbackManager.backwardStack.AddLast(selfStep);
RollbackManager.IsRollingBack = true;
}
// 取上一状态
if (RollbackManager.IsRollingBack && RollbackManager.forwardStack.Count > 0)
{
var lastStep = RollbackManager.forwardStack.Last();
RollbackManager.forwardStack.RemoveLast();
RollbackManager.backwardStack.AddLast(lastStep);
// 重演绎
RollbackManager.GotoSteadyState(lastStep);
ViewManager.MaskFrameRef.Opacity = 0;
NotificationManager.SystemMessageNotify("正在回滚", 800);
}
}
}
}
/// <summary>
/// 系统向前进一个状态
/// 她只有在对话推进和选择项出现时才被触发
/// </summary>
public static void SteadyForward(bool fromWheel, SceneAction saPtr, MusicianDescriptor mdescriptor, BacklogHolder backlogHolder)
{
lock (typeof(RollbackManager))
{
// 回滚后返回，移栈并演绎
if (fromWheel && RollbackManager.IsRollingBack)
{
// 取上一状态
var recentStep = RollbackManager.backwardStack.Last();
RollbackManager.backwardStack.RemoveLast();
RollbackManager.forwardStack.AddLast(recentStep);
// 重演绎
RollbackManager.GotoSteadyState(recentStep);
}
// 非回滚状态时才重新构造
else if (fromWheel == false)
{
// 处理回顾
if (saPtr.Type == SActionType.act_dialog)
{
backlogHolder.AddLog(saPtr.Tag);
}
// 构造当前状态的拷贝
var vm = Director.RunMana.CallStack.Fork() as StackMachine;
vm.SetMachineName(String.Format("Yuri!Forked?{0}?{1}", DateTime.Now.Ticks, rand.Next(0, int.MaxValue)));
RollbackableSnapshot ssp = new RollbackableSnapshot()
{
TimeStamp = DateTime.Now,
IsBranchingRefer = Director.GetInstance().GetMainRender().IsBranching,
MusicRef = ForkableState.DeepCopyBySerialization(mdescriptor),
BacklogRef = ForkableState.DeepCopyBySerialization(backlogHolder),
ReactionRef = saPtr,
VMRef = vm,
globalDao = SymbolTable.GetInstance().GlobalCtxDao.Fork() as GlobalContextDAO,
sceneDao = SymbolTable.GetInstance().SceneCtxDao.Fork() as SceneContextDAO,
ScreenStateRef = ScreenManager.GetInstance().Fork() as ScreenManager,
SemaphoreDict = ForkableState.DeepCopyBySerialization(Director.RunMana.SemaphoreBindings),
EnableRClickRef = Director.RunMana.EnableRClick,
PerformingChapterRef = Director.RunMana.PerformingChapter
};
// 如果栈中容量溢出就剔掉最早进入的那个
if (RollbackManager.forwardStack.Count >= GlobalConfigContext.MaxRollbackStep)
{
RollbackManager.forwardStack.RemoveFirst();
}
// 入栈
RollbackManager.forwardStack.AddLast(ssp);
}
}
}
