etoys-dev May 2007

etoys-dev@lists.squeakfoundation.org

13 participants
23 discussions

[Etoys] Some recent big changes
by Yoshiki Ohshima 02 May '07

02 May '07

Hello, We've been kept relatively quiet, but behind the scene, a lot of new things (related to Etoys classic) were experimented. We decided to go ahead and push some of them to the OLPC image. Please fetch update into your image. I'll make a pre-loaded images shortly. The biggest user visible change is that the precedence of operators in a tile expression now follows the conventional mathematical way; i.e., multiplication and division is stronger than addition and subtraction, etc. Whenever you extend the expression with right arrow, or change the operator in between terms, a path in the compilation processes it and produces the "right" result. This is a big change and presumably break existing contents; however, without this, millions of users will suffer. So we figured that we have to do this. Internally, there is a lot of changes. Especially the new way of storing a project is getting ready there. To be a bit conservative, a project is stored in the same way as before, but once you evaluate an expression in a Workspace or TextMorph: Project publishInSexp: true. The new format will be used. This new format still lets you store most of Etoys; one thing known to break are when you disassemble a scriptor's buttons to do certain stuff, it will not work (the ScriptEditorMorph instance is totally re-created from scratch upon loading and it doesn't deal with that kind of anomally.) Please try it with your projects and let me know how it goes. Kedama is also in transition. Existing projects generally work, but the internal structure has changed and they should be re-done from scratch for better compatibility. There is a little parser-generator in the system, BTW. You can write production rules in the system browser and define a new language with it. A Logo-like language that controls Etoys objects would be nice to have. If you're interested in such a thing please let me know, too. Thank you! -- Yoshiki

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[Etoys] Text characters in viewers
by Karl 02 May '07

02 May '07

I counted 40 characters in the viewer when viewing text. Could that be limited to say 10 or 15 characters for efficiency ? Karl

2 1

[Etoys] [BUG] Walkback on duplicating object embedded in flexed object
by Bert Freudenberg 02 May '07

02 May '07

To reproduce, embed an object and rotate its parent. Then duplicate the embedded one. - Bert -

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etoys-dev May 2007