Simultor frameworks for Squeak
hirzel at spw.unizh.ch
Mon Jul 23 21:09:44 UTC 2001
In addition to the many things already mentioned
I think one should as well say that Morphic as it is now is a simulation
The class Morph contains the method
"Return true if the receiver overrides the default Morph step
"Details: Find first class in superclass chain that implements
#step and return true if it isn't class Morph."
| c |
self isPartsDonor ifTrue: [^ false].
self player wantsSteps ifTrue: [^ true].
c _ self class.
[c includesSelector: #step] whileFalse: [c _ c superclass].
^ c ~= Morph
So to make that your morphs get sent the message #step to them regularily
you just have to implement
in the subclasses of Morph you are working with.
The number you give back in #stepTime is in milliseconds.
An example for this in the image is the BouncingAtomsMorph.
It serves as a simulation of an ideal gas.
Bring up its halo and you see that it as well serves to simulate
infections (menu entry: 'start infection').
On another context this #step / #stepTime mechanisms makes it
easy to do animated presentations.
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