[Newbies] Time

Bert Freudenberg bert at freudenbergs.de
Sat Oct 7 12:13:19 UTC 2006

Am 06.10.2006 um 18:17 schrieb Steve Linduska:

> Wonder about the ways to handle 'time' in Squeak.
> For example, LOGO has commands for wait/waituntil x amount, or  
> 'timing'.

Hi Steve,

do you mean in Etoys or in Smalltalk? In Smalltalk code, you can use  
"(Delay forMilliseconds: x) wait". However, this blocks the current  
process, that is the whole UI in Morphic.

Given your LOGO reference I guess you mean Etoys. Etoys version 1  
(the current, Morphic-based version) does not have this feature,  
because it depends on scripts ticking in parallel (blocking would  
prevent that concurrency). You can, however, set the ticking rate of  
a script to adjust the speed at which actions are performed.

Etoys 2 (based on Tweak) does support waiting, it simply provides a  
"wait x sec" tile. Internally this uses a Delay, but since Tweak is  
multi-threaded (in contrast to Morphic), other scripts will continue  
to operate.

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- Bert -

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