/// <summary>
/// Return SplayCode to the last captured state.
/// </summary>
public void Undo()
{
if (stateStack.Count != 0)
{
UndoState oldState = stateStack[stateStack.Count - 1];
stateStack.RemoveAt(stateStack.Count - 1);
BlockManager.Instance.LoadBlockStates(oldState.BlockStates);
}
}
/// <summary>
/// Captures the current state of SplayCode. Call this before
/// proceeding on an action that should be undoable.
/// </summary>
public void SaveState()
{
UndoState newState = new UndoState(BlockManager.Instance.BlockList);
if (stateStack.Count >= UNDO_LIMIT)
{
stateStack.RemoveAt(0);
}
stateStack.Add(newState);
}