"Operand Expected" error

[Gon2001 webforumsuser@macromedia.com]

I am trying to create a "slider" function that works with a gauge needle. Basically, the lever moves vertically and with each pixel movement, the gauge needle needs to move so many degrees. I've received the following code from somewhere else, but I'm getting the "Operand Expected" error. Anyone have any idea what the deal is? What is wrong?

property thisSprite, animateMe, zeroPoint
property constraintSprite, constraintHeight
property dialSprite, minRotation, maxRotation

on getPropertyDescriptionList
myPropList = [:]
myPropList.addProp(#constraintSprite, [#comment: "enter the constraint sprite number:", #format: #integer, #default: 5])
myPropList.addProp(#dialSprite, [#comment: "enter the dial sprite number", #format: #integer, #default: 10])
myPropList.addProp(#minRotation, [#comment: "select the minimum dial rotation value:", #format: #integer, #range: [#min: 0, #max: 90], #default: 0])

myPropList.addProp(#maxRotation, [#comment: "select the maximum dial rotation value:", #format: #integer, #range: [#min: 180, #max: 270], #default: 180])
return myPropList
end

on beginSprite me
thisSprite = me.spriteNum
zeroPoint = sprite(constraintSprite).bottom
constraintHeight = sprite(constraintSprite).height
animateMe = 0
end

on mouseDown me
animateMe = 1
end

on mouseUp me
animateMe = 0
end

on mouseUpOutside me
animateMe = 0
end

on prepareFrame me
if (animateMe) then
sprite(thisSprite).locV = constrainV(constraintSprite, the mouseV)
sprite(dialSprite).rotation = ((zeroPoint -
sprite(thisSprite).locV)/float(constraintHeight)*(maxRotation - minRotation)) &#43 minRotation
end if
end

[Mark A. Boyd]

On 02 Dec 2003, "Gon2001" [email]webforumsuser@macromedia.com[/email] wrote:

> I am trying to create a "slider" function that works with a gauge
> needle. Basically, the lever moves vertically and with each pixel
> movement, the gauge needle needs to move so many degrees. I've
> received the following code from somewhere else, but I'm getting the
> "Operand Expected" error. Anyone have any idea what the deal is? What
> is wrong?

[snip]

> on prepareFrame me
> if (animateMe) then
> sprite(thisSprite).locV = constrainV(constraintSprite, the mouseV)
> sprite(dialSprite).rotation = ((zeroPoint -
> sprite(thisSprite).locV)/float(constraintHeight)*(maxRotation -
> minRotation)) &#43 minRotation
> end if
> end

I'm guessing you have a word-wrap problem there. The last three lines
beginning with 'sprite(dialSprite).rotation =' are probably supposed to be
on one line or used with the line continuation character. As it is now,
'zeroPoint -' is missing the operand that the subtraction operator is
supposed to use.

on prepareFrame me
if (animateMe) then
sprite(thisSprite).locV = constrainV(constraintSprite, the mouseV)
sprite(dialSprite).rotation = ((zeroPoint -\
sprite(thisSprite).locV)/float(constraintHeight)\
*(maxRotation - minRotation)) &#43 minRotation
end if
end

But I have doubts as to the validity of that '&#43 minRotation' at the end.


--
Mark A. Boyd
Keep-On-Learnin' :)

[Gon2001 webforumsuser@macromedia.com]

Well, I too was COMPLETELY oblivious to the validity of the '&#43 minRotation' at the end also. I didn't even realize that the lines were thrown off by not paying attention continuation character. I've looked at what I have now and I think that is causing me a problem.

I've posted this issue at 5 different forums and you're the only one that has responded. Let's just hope it works or functions in some way by tomorrow. (thats when the assignment is due) No matter the outcome, I appreciate the feedback.

Still learning :o)