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Classes are an unfinished part of MBSC 2.0. Unlike UDTs, classes use pointers all the time. They also keep track of their own lifetime, are dynamically allocated, and can be returned from functions. All of this together makes classes a much more powerful version of UDTs.
And here's the section where I explain what the first paragraph means. Ugh.
Here's an example that uses classes:
Class ListNode
Dim Data as String
Dim Next as ListNode
End Class
Class LinkedList
Dim Root as ListNode
Sub Insert(Data as String)
Dim CurNode as ListNode
CurNode = Root
While CurNode.Next <> NULL
CurNode = CurNode.Next
Wend
Set CurNode.Next = New CurNode
CurNode.Next.Data = Data
End Sub
Sub Delete(Index as Long)
Dim CurNode as ListNode
Dim CurIndex as Long
CurNode = Root
While CurNode.Next <> NULL & CurIndex < Index-1
CurNode = CurNode.Next
CurIndex = CurIndex + 1
Wend
If CurNode.Next <> NULL Then CurNode.Next = CurNode.Next.Next
End Sub
End Class
Sub Main(Player as Long)
Dim List as LinkedList
Dim i as Long
For i = 1 To 50
If IsPlaying(i) Then List.Insert(GetPlayerName(i))
Next i
End Sub
Remember, classes are unfinished, so none of this code actually compiles. It only describes how they should work.
There's so much involved here that there's no way I'm explaining all of it now. I haven't even explained pointers and references anywhere in the tutorial. >_<