How Do I create a Modular Function for use with Event Listeners

Question

OK I'm very new to AS3 and I'm curious as to how to get
modular functions to work in AS3.
for instance if I have this code:
function snowfall(snowflake:MovieClip, movement:Number):void
snowflake.y = movement;
snowfall(snowflake1_mc, 10);
snowfall(snowflake2_mc, 20);
snowfall(snowflake3_mc, 30);
Now on the stage I place 3 instances of a snowflake movie
clip. Each time I call the "snowfall" function I refer to a new
instance of the snowflake movie clip and a different amount of
movement along the y axis.
This is great but what if I want to use a button to control
these snowflake movie clips and I want to maintain that modular
nature? I don't really get how to do this. I created a button with
an instance name of "myButton" and I've tried this code but it is
throwing an error I don't really understand:
myButton.addEventListener(MouseEvent.CLICK,
snowfall(snowflake3_mc, 30));
Can I not pass information to a function using an
EventListener?

Answer 1

Hi --
What you want to do on your button is this..
myButton.addEventListener(MouseEvent.CLICK,snowfall)
Then in the function you can check which button called the
function using
properties of the event..
function snowfall(event:MouseEvent) {
trace(event)
I am not sure off the top of my head of the data available in
the "event"
but the trace will show you all the variables you can access.
As far as the amount of movement -- how is this information
set? You can
keep this in a global variable and then read it from inside
the event
handler rather than needing to pass it to the event.
Rich
"HalcyonCollective" <[email protected]>
wrote in message
news:fl695r$l95$[email protected]..
> OK I'm very new to AS3 and I'm curious as to how to get
modular functions
> to
> work in AS3.
>
> for instance if I have this code:
>
>
function snowfall(snowflake:MovieClip, movement:Number):void
> {
> snowflake.y = movement;
> }
>
> snowfall(snowflake1_mc, 10);
> snowfall(snowflake2_mc, 20);
> snowfall(snowflake3_mc, 30);
>
> Now on the stage I place 3 instances of a snowflake
movie clip. Each time
> I
> call the "snowfall" function I refer to a new instance
of the snowflake
> movie
> clip and a different amount of movement along the y
axis.
>
> This is great but what if I want to use a button to
control these
> snowflake
> movie clips and I want to maintain that modular nature?
I don't really get
> how
> to do this. I created a button with an instance name of
"myButton" and
> I've
> tried this code but it is throwing an error I don't
really understand:
>
>
myButton.addEventListener(MouseEvent.CLICK,
snowfall(snowflake3_mc,
> 30));
>
> Can I not pass information to a function using an
EventListener?
>