/// <summary>
/// Returns to an existing state.
/// </summary>
/// <param name="state">The state to return to.</param>
private void ReturnTo(State state)
{
//Do nothing if there's no such state
if (!m_StateList.Contains(state)) return;
//Keep marking state until found
LinkedListNode<State> Current = m_StateList.Last;
while (Current != null && Current.Value != state) {
//Increase depth and go to next
Current = Current.Previous;
m_Depth++;
}
}
public State GetPreviousState(State state)
{
//Check for null
if (state == null) return null;
if (m_StateList == null) return null;
//Variable
LinkedListNode<State> Source = null;
LinkedListNode<State> Current = m_StateList.First;
//While state still exist
while (Current != null) {
//Find source
if (Current.Value == state) Source = Current;
Current = Current.Next;
}
//Return null if there's no previous state
if (Source.Previous == null) return null;
//Otherwise, return previous value
return Source.Previous.Value;
}
/// <summary>
/// Adds a new state at the end of the state list.
/// </summary>
/// <param name="state">The new state that will be added</param>
private void AddState(State state)
{
//Do nothing if state is null
if (state == null) return;
//Add and initialize state
m_StateList.AddLast(state);
m_StateList.Last.Value.Initialize();
EnterState();
//Logging
Global.Logger.AddLine(state + " has been added to the state list.");
//If top state isn't popup, turn off lower states
#region Manage popup states);
if (!m_StateList.Last.Value.IsPopUp()) {
//Create variable
LinkedListNode<State> Current = m_StateList.Last;
do {
//Turn off previous state
Current = Current.Previous;
if (Current != null) Current.Value.SetVisibility(false);
//While current state is popup
} while (Current != null && Current.Value.IsPopUp());
}
#endregion
}