alice-teacher Object checking opacity of a vehicle

[Rikki Fletcher]

When I have problems with Alice not "letting" me do things - I usually
work around with temp variables that I assign as needed.  I set things up
as Alice likes with a default anything, then drag the temp variable where
I want it.

> Question from a student who is trying to figure out a way to have an
> object check the opacity of a current object vehicle. Any suggestions?
>
> I have a problem. I have 5 helicopters in my alice program and I have a
> missile attached to each (their vehicle is set to one of the helecopters).
> I have all of my misiles in a list and I want to be able to treat the
> current object's vehicle in a for all in order list as a regular object
> (Ideally setting a variable to item_from_missile_list.vehicle) and then I
> want to be able to check the vehicle's opacity (I want to do this so I can
> check whether or not the helicopter is visible or "alive" and perform an
> action accordingly). However, Alice won't let me drop the
> item_from_missile_list.vehicle into an opacity function (ie opacity =
> randomObject.opacity), and I'm not really sure why its doing this. Do any
> of you have any idea why this is, how to fix it or any potential
> workarounds?
>
> Mr. Scott Findley
> sfindley at sd43.bc.ca<https://webmail.sd43.bc.ca/owa/redir.aspx?C=0a9bf7b1630b4554891428589166e563&URL=mailto%3asfindley%40sd43.bc.ca>
> Gleneagle Secondary School
> http://gleneagle.org<https://webmail.sd43.bc.ca/owa/redir.aspx?C=0a9bf7b1630b4554891428589166e563&URL=http%3a%2f%2fgleneagle.org%2f>
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