/// <summary>
/// 将临时入栈的state出栈, 并设置成当前状态
/// </summary>
public void PopStackState()
{
GameStateBase oldState = currentState;
if (oldState != null)
{
oldState.PrepareExit();
}
currentState = stateStack.Pop();
currentState.PreparePopStack();
if (oldState != null)
{
var oldStateType = oldState.StateType;
oldState.Exit();
// 记录上次的状态
stateChangingContex.RecordLastState(oldStateType);
}
currentState.PopStack();
if (oldState != null)
{
oldState.DoneExit();
oldState.Dispose();
GameObject.Destroy(oldState);
}
currentState.DonePopStack();
}
/// <summary>
/// 清理掉所有如栈的状态
/// </summary>
public void ClearPushedStates()
{
while (stateStack.Count > 0)
{
GameStateBase state = stateStack.Pop();
state.PrepareExit();
var oldStateType = state.StateType;
state.Exit();
// 记录上次的状态
stateChangingContex.RecordLastState(oldStateType);
state.DonePushStack();
state.Dispose();
GameObject.Destroy(state);
}
}
/// <summary>
/// 切换GameState
/// </summary>
/// <param name="force">false时, 如果当前状态为目标状态, 不执行切换, 直接返回当前状态</param>
public T EnterState <T>(object userData = null, bool force = false) where T : GameStateBase
{
if (force == false)
{
// 如果当前状态为目标状态, 直接返回
if (currentState != null && typeof(T) == currentState.GetType())
{
return(currentState as T);
}
}
GameStateBase oldState = currentState;
currentState = rootGo.AddComponent <T>();
currentState.MachineManager = this;
currentState.Create(userData);
if (oldState != null)
{
oldState.PrepareExit();
}
currentState.PrepareEnter();
if (oldState != null)
{
var oldStateType = oldState.StateType;
oldState.Exit();
// 记录上次的状态
stateChangingContex.RecordLastState(oldStateType);
}
currentState.Enter();
if (oldState != null)
{
oldState.DoneExit();
oldState.Dispose();
GameObject.Destroy(oldState);
}
currentState.DoneEnter();
return(currentState as T);
}
