// This version of GetSprite uses a callstack to check if it isn't going into an endless loop
private FrameInfo GetSprite(int index, HashSet <StateStructure> prevstates)
{
// If we have sprite of our own, see if we can return this index
if (index < sprites.Count)
{
return(sprites[index]);
}
// Otherwise, continue searching where goto tells us to go
if (gotostate != null)
{
// Find the class
ActorStructure a = parser.GetArchivedActorByName(gotostate.ClassName);
if (a != null)
{
StateStructure s = a.GetState(gotostate.StateName);
if ((s != null) && !prevstates.Contains(s))
{
prevstates.Add(this);
return(s.GetSprite(gotostate.SpriteOffset, prevstates));
}
}
}
// If there is no goto keyword used, just give us one of our sprites if we can
if (sprites.Count > 0)
{
// The following behavior should really depend on the flow control keyword (loop or stop) but who cares.
return(sprites[0]);
}
return(new FrameInfo());
}
/// <summary>
/// This returns a specific state, or null when the state can't be found.
/// </summary>
public StateStructure GetState(string statename)
{
if (states.ContainsKey(statename))
{
return(states[statename]);
}
if (!skipsuper && (baseclass != null))
{
return(baseclass.GetState(statename));
}
return(null);
}
/// <summary>
/// This returns a specific state, or null when the state can't be found.
/// </summary>
public StateStructure GetState(string statename)
{
// [ZZ] we should NOT pick up any states from Actor. (except Spawn, as the very default state)
// for the greater good. (otherwise POL5 from GenericCrush is displayed for actors without frames, preferred before TNT1)
if (classname.ToLowerInvariant() == "actor" && statename.ToLowerInvariant() != "spawn")
{
return(null);
}
if (states.ContainsKey(statename))
{
return(states[statename]);
}
if (!skipsuper && (baseclass != null))
{
return(baseclass.GetState(statename));
}
return(null);
}