/// <summary>
/// Gets the state on the stack below the provided state.
/// </summary>
/// <param name="esi">State to look below.</param>
/// <returns>State below esi on the stack.</returns>
public static IEngineState peekBelowState(IEngineState esi)
{
List<IEngineState> list = m_stateStack.ToList();
int loc = list.FindIndex(i => i == esi);
if (loc > -1 && loc < list.Count - 1)
{
return list[loc + 1];
}
throw new Exception("Tried to peek below a state which isn't on the stack or is on the bottom");
}
/// <summary>
/// Adds a state to the top of the stack.
/// </summary>
/// <param name="esi">State to push to the top.</param>
public static void pushState(IEngineState esi)
{
m_stateStack.Push(esi);
}
/// <summary>
/// Removes the current top of the state stack and adds a new state.
/// </summary>
/// <param name="esi">State which replaces the top of the stack.</param>
public static void replaceCurrentState(IEngineState esi)
{
m_stateStack.Pop();
m_stateStack.Push(esi);
}