Example #1
0
//==========================================================================
//
// Starts a new actor definition
//
//==========================================================================
PClassActor *CreateNewActor(const FScriptPosition &sc, FName typeName, FName parentName, bool native)
{
	PClassActor *replacee = NULL;
	PClassActor *ti = NULL;

	PClassActor *parent = RUNTIME_CLASS(AActor);

	if (parentName != NAME_None)
	{
		parent = PClass::FindActor(parentName);
		
		PClassActor *p = parent;
		while (p != NULL)
		{
			if (p->TypeName == typeName)
			{
				sc.Message(MSG_ERROR, "'%s' inherits from a class with the same name", typeName.GetChars());
				break;
			}
			p = dyn_cast<PClassActor>(p->ParentClass);
		}

		if (parent == NULL)
		{
			sc.Message(MSG_ERROR, "Parent type '%s' not found in %s", parentName.GetChars(), typeName.GetChars());
			parent = RUNTIME_CLASS(AActor);
		}
		else if (!parent->IsDescendantOf(RUNTIME_CLASS(AActor)))
		{
			sc.Message(MSG_ERROR, "Parent type '%s' is not an actor in %s", parentName.GetChars(), typeName.GetChars());
			parent = RUNTIME_CLASS(AActor);
		}
	}

	if (native)
	{
		ti = PClass::FindActor(typeName);
		if (ti == NULL)
		{
			extern void DumpTypeTable();
			DumpTypeTable();
			sc.Message(MSG_ERROR, "Unknown native actor '%s'", typeName.GetChars());
			goto create;
		}
		else if (ti != RUNTIME_CLASS(AActor) && ti->ParentClass->NativeClass() != parent->NativeClass())
		{
			sc.Message(MSG_ERROR, "Native class '%s' does not inherit from '%s'", typeName.GetChars(), parentName.GetChars());
			parent = RUNTIME_CLASS(AActor);
			goto create;
		}
		else if (ti->Defaults != NULL)
		{
			sc.Message(MSG_ERROR, "Redefinition of internal class '%s'", typeName.GetChars());
			goto create;
		}
		ti->InitializeNativeDefaults();
		ti->ParentClass->DeriveData(ti);
	}
	else
	{
	create:
		ti = static_cast<PClassActor *>(parent->CreateDerivedClass (typeName, parent->Size));
	}

	ti->Replacee = ti->Replacement = NULL;
	ti->DoomEdNum = -1;
	return ti;
}