[squeak-dev] Did Alice wander?Karl Ramberg karlramberg at gmail.comSat Jul 25 08:51:05 UTC 2009
On 2009-07-24 00:41, John McKeon wrote: > > > On Thu, Jul 23, 2009 at 6:26 PM, John McKeon <p3anoman at gmail.com > <mailto:p3anoman at gmail.com>> wrote: > > > > On Thu, Jul 23, 2009 at 12:11 PM, Eliot Miranda > <eliot.miranda at gmail.com <mailto:eliot.miranda at gmail.com>> wrote: > > Hi Gary, > > On Thu, Jul 23, 2009 at 3:28 AM, Gary Dunn <osp at aloha.com > <mailto:osp at aloha.com>> wrote: > > On Thu, 2009-07-23 at 00:19 -0400, John McKeon wrote: > > > > > > On Tue, Jul 21, 2009 at 12:57 PM, Gary Dunn > <osp at aloha.com <mailto:osp at aloha.com>> wrote: > > I was reading about SqueakMap and came across > the Swiki page > > for Alice > > > > http://wiki.squeak.org/squeak/1861 > > > > Is anyone actively using Alice in Squeak? > > > > - The page was last edited in 2004 > > > > - The first link is dead > > > > - The second link goes to the new, improved > Sun sponsored > > all Java > > version of Alice, which appears to be healthy > > > > - The third link downloads a Ph.D. > dissertation from 1997 > > > > - After the outdated info is a rant on the > shortcomings of > > OpenGL. > > It just starts up, mid stream, "There is a > serious design flaw > > in the > > lighting or rather the shading." This should be > removed. > > > > - A search on the Swiki for Alice includes a > page on Falice > > which > > links to www.falice.com <http://www.falice.com> > which is a parked domain. > > > > Last but not least, when I try to load > "FullImageProjectAlice" > > I get > > errors. Very likely I am doing something wrong. > > > > Is this worth pursuing, or has Alice in > Squeakland wandered > > off? > > > > Aloha Gary, > > I remember the first time I saw Squeak, A;ice was > pre-loaded in the > > image, so I did some digging. > > If you are really interested go to ftp.squeak.org > <http://ftp.squeak.org> and download a a > > 2.x version of Squeak. > > The 2.8 distribution has it installed. Be warned, the > older Squeak > > interface might disappoint you ;) > > > > Regards > > John McKeon > > Thanks, John. I downloaded the 2.8 image and changes > files, and the V2 > sources, and launched squeak with those. It opens fine, if > old looking, > and Alice is in there. I did a Wonderland new. and ran > into an error: > > mustBeBoolean > "Catches attempts to test truth of non-Booleans. > This message is sent > from the > interpreter." > > self error: 'NonBoolean receiver--proceed for truth.'. > ^true > > The offending code is > > areasRemainingToFill: aRectangle > ^myCamera drawSceneBackground > ifTrue:[aRectangle areasOutside: self bounds] > ifFalse:[Array with: aRectangle] > > where "bounds" in the ifTrue branch is highlighted. > > > This looks as if myCamera drawSceneBackground is not returning > a boolean. Certain messages, in particular ifTrue: ifFalse: > ifTrue:ifFalse: whileTrue: and whileFalse: are inlined by the > compiler into conditional branch instructions which operate on > the object on top of stack. The conditional branches expect > either true or false, the sole instances of True and False > respectively. When they encounter something other than true > or false the VM sends mustBeBoolean to that > object. So look in the debugger at the object that has received mustBeBoolean. This was the result that > myCamera drawSceneBackground returned, whereas > areasRemainingToFill: expected a boolean. > > HTH > Eliot > > > Those errors disappear with the latest code in a 3.10 image. > > > > A little more digging reveals that senders of bounds have > something to > do with AlignmentMorph, which is old stuff -- is the > problem that ny VM > is too "new.?" > > Any suggestions as to how to proceed? Is there a way to > cast "bounds" to > the Boolean requirement? Sorry, that's my C showing. > > > I believe that is what makes Smalltalk a *strongly* typed > language. No typecasting. > > Loading the latest Baloon3D code from Squeaksource yields somewhat > better results but there is a bit of post load actions that appear > to be required. > > Sorry, prematurely sent. > > I evaluated all of the following the first two of which are definitely > needed but I am not sure of the other two. > WonderlandConstants initialize. > WonderlandConstants recompileUsers. > B3DHardwareEngine initialize. > B3DAcceleratorPlugin new initialiseModule. > > I am able to get Wonderland new to run. But a warning message tells me > that B3DPrimitiveEngine is not enabled (and I cannot as yet figure out > how to enable it). Once Alice is running no graphics are rendered, > just a blue screen(!) :) Do you have the Squeak3D plugin in the SqueakVM directory ? http://squeakvm.org/win32/release/Squeak3D.zip Karl > > Then mousing over Wonderland throws errors in > WonderlandCamera>>pickAt: aPoint when it calls > B3DRenderEngine defaultForPlatformOn: nil > where nil should be(?) a Form object. BitBlt eventually tries to > access the boundingBox of this undefined object.in <http://object.in> > BitBlt>>setDestForm: aForm causing an MNU > > Thats as far as I have gotten for now, > John > > > > > > > > -- > Gary Dunn, Honolulu > osp at aloha.com <mailto:osp at aloha.com> > http://openslate.net/ > http://e9erust.blogspot.com/ > Sent from Slate001 > > > > > > > > > > -- > http://jmck.seasidehosting.st > > > > > -- > http://jmck.seasidehosting.st > ------------------------------------------------------------------------ > > > -------------- next part -------------- An HTML attachment was scrubbed... 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