/// <summary>Pushes the specified state onto the state stack</summary>
/// <param name="state">State that will be pushed onto the stack</param>
public void Push(GameState state) {
if(this.activeGameStates.Count > 0) {
// Pause the state the was previously active
this.activeGameStates.Peek().InternalPause();
}
try {
this.activeGameStates.Push(state);
// Push the new state onto the stack and notify it that it has become active
try {
state.InternalEntered();
}
catch(Exception) {
this.activeGameStates.Pop();
throw;
}
}
catch(Exception) {
if(this.activeGameStates.Count > 0) {
this.activeGameStates.Peek().InternalResume();
}
throw;
}
}
/// <summary>Pushes the specified state onto the state stack</summary>
/// <param name="state">State that will be pushed onto the stack</param>
public void Push(GameState state)
{
if (this.activeGameStates.Count > 0)
{
// Pause the state the was previously active
this.activeGameStates.Peek().InternalPause();
}
try
{
this.activeGameStates.Push(state);
// Push the new state onto the stack and notify it that it has become active
try
{
state.InternalEntered();
}
catch (Exception)
{
this.activeGameStates.Pop();
throw;
}
}
catch (Exception)
{
if (this.activeGameStates.Count > 0)
{
this.activeGameStates.Peek().InternalResume();
}
throw;
}
}
/// <summary>Takes the currently active game state from the stack</summary>
public void Pop()
{
GameState topMostGameState = this.activeGameStates.Peek();
topMostGameState.InternalLeaving();
this.activeGameStates.Pop();
if (this.activeGameStates.Count > 0)
{
try
{
this.activeGameStates.Peek().InternalResume();
}
catch (Exception)
{
topMostGameState.InternalEntered();
this.activeGameStates.Push(topMostGameState);
throw;
}
}
}
