Hello,
First, I'm very happy as I managed to defend my M.A. thesis to an excellent
mark. Second, I'm a bit confused: when do I use variables and when do I use
functions straight ahead?
E.g. I wanted to make a handler that would check for definite members in
definite castLib and then add the results to the list. When I tried to use
this:
------------------------------------------
property pVectorShape
on getPropertyDescriptionList(me)
vectorShapesList = []
repeat with j = 1 to the number of members of castLib "Assets"
if(member(j).type = #vectorShape) then
vectorShapesList.add(j)
end if
end repeat
descriptionList = [:]
descriptionList.addProp(#pVectorShape, [#comment:"Which one",
#format:#member, #range:vectorShapesList, #default:1])
return(descriptionList)
end
------------------------------------------
Director returned a script error (moreover, even a fatal one). But, when I
changed the code a bit to: (as an inspiration for the below handler I used
a royalty free code by Brian Robbins posted on 2/28/2004 at dirGames-l)
------------------------------------------
property pVectorShape
on getPropertyDescriptionList(me)
vectorShapesList = []
repeat with j = 1 to the number of members of castLib "Assets"
theMember = member(j, i)
if(theMember.type = #vectorShape) then
vectorShapesList.add(theName)
end if
end repeat
descriptionList = [:]
descriptionList.addProp(#pVectorShape, [#comment:"Which one",
#format:#member, #range:vectorShapesList, #default:1])
return(descriptionList)
end
Worked just fine.
Another example may be considered as follows:
------------------------------------------
property pSprite
property pLocH
on beginSprite(me)
pSprite = (me.spriteNum)
pLocH = sprite(pSprite).locH
end
on exitFrame(me)
distH = (_mouse.mouseH - pLocH)
put(distH)
end
------------------------------------------
Works just fine though I didn't assign _mouse.mouseH to a separate variable.
This example:
------------------------------------------
property pSprite
property pLocH
on beginSprite(me)
pSprite = (me.spriteNum)
pLocH = sprite(pSprite).locH
end
on exitFrame(me)
theMouseH = _mouse.mouseH
distH = theMouseH - pLocH
put(distH)
end
------------------------------------------
Works fine too but it just has that redundant and confusing assignment.
I know, questions like this are really generalizing and presuppose complex
methods of research and experience but still: should I stick to idea to
always use variables instead of "straight" function using or are there sort
of exceptions or rules that I am to stick to?
Thanks in advance
-------------------
Peter Bochan
Associate Assistant
College of Foreign Languages
Chernivtsi National University
Ukraine
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