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From: gtrufitt on 10 Jan 2008 11:05
Hi,

I have 12 images that I wish to appear in random locations within a certain
area of the stage when the movie is begun or a button is pressed. I found a
small bit of code, but I am unable to decipher it:

on mouseUp me
sprite (2).loc = point (((random ((the stageright) - 700)) + 500), ((random
((the stageBottom) - 500)) + 400))
end

If any one is able to help me with this or suggest a better way to do it that
would be great.

Cheers, Gareth

on mouseUp me
sprite (2).loc = point (((random ((the stageright) - 700)) + 500), ((random
((the stageBottom) - 500)) + 400))
end

From: Rob Dillon on 10 Jan 2008 14:16
The loc is a sprite property that holds the horizontal and vertical position of
the sprite. It is expressed in pixels and is called a point. For example:
put sprite(2).loc
-- point (5,16)

Random is a function that will return a random number between a minimum and
maximum value. If only one value is given, then the random number will be
between 1 and the number given. For example:
put random(3)
-- 2
put random(3, 17)
-- 10

The stageRight, and the stageLeft, the stageTop and the stageBottom, are
properties of the staqe. Each of these properties will return the position of
that edge of the stage on the user's monitor. To find out how wide the stage
is, for example, you would subtract the stageLeft from the stageRight. There
is, oddly enough, no built in property to describe the width or height of the
stage. In any case, the calculation in your function is used to give the random
function two numbers, with a difference of 500 pixels left to right and 400
pixels top to bottom.

The result is that sprite 2 will be positioned somewhere on the stage in a 500
by 400 pixel space on the stage.

When working with this sort of function, keep in mind that the registration
point for a bitmap sprite will usually be at its center. So the center of the
sprite will be positioned somewhere in that space, not necessarily the whole
sprite.

From: gtrufitt on 10 Jan 2008 15:23
Thank you very much for the help

Gareth
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