Curious behavior

Bill Spight bspight at
Mon Jan 13 03:01:55 UTC 2003


When I try to create a new GoMorph, I get some strange behavior from
Squeak (latest download for WindowsME).

Here is the #initialize method:

    super initialize.
    self boardExtent = nil
 	ifTrue: [boardExtent _ 19 @ 19].
    self winner: #NoOne;
	board: ((Array new: self height * self width)
		atAllPut: (Dictionary new at: #Color put: #Empty;
			 at: #Liberties put: Set new;
        lastPlayer: #NoOne;
	addMorph: (boardMorph _ GoBoardMorph newBoardExtent: self boardExtent).
    self boardHandler: GoStoneHandler new

Everything goes fine until the last line. It is a bit unusual because it
actually sets an instance variable of a submorph. Here is that method:

GoMorph>>boardHandler: aMorph 
    "The boardHandler is actually an instance variable of the submorph,
    boardMorph handler: aMorph

The problem comes, though, before this method is called. Instead of
sending the #new message to GoStoneHandler (which has no class methods
of its own, and is a subclass of EllipseMorph) Squeak sends it to
UndefinedObject. Which does not work, OC.

If I comment out the last line and Do the following, which I think
should be equivalent, everything works as intended.

gofer _ GoMorph new.
gofer boardHandler: GoStoneHandler new

Am I missing something?

Many thanks,

Bill Spight

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