RE: FLASH: RE: Challenge?

[Branden J. Hall]

Actually, for that demo, you don't need trig at all...

its all about kinetic energy in the x and y dimension.

Check out www.figleaf.com/development/flash4/paddleballs.swf

that is doing the exact same idea as the demo, except the point of

equalibrium is always set to be a static point.   To make an MC chase the

mouse like this simply make an invisible MC on the stage, name the instance

invisible, and add a frame action to start dragging it(make sure you turn

LOCK TO CENTER on).  Then create another MC of your chase object, put it on

the stage and name the instance chaser.  Finally, create another MC and put

the following actions on both frames then place this MC on the stage.. wa

la!


Set Variable: "xspeed" = xspeed*.95+((/invisible:_x-/chaser:_x)/20)

Set Variable: "yspeed" = yspeed*.95+((/invisible:_y-/chaser:_y)/20)

Set Property ("/chaser", X Position) = /chaser:_x+xspeed

Set Property ("/chaser", Y Position) = /chaser:_y+yspeed


as you can see, the MCs speed is 1/20th its distace from the inivisible MC

added to 95% of the orginal speed. The reason for the 95% is so that the MC

eventually slows down.


-= Branden J. Hall

-= Multimedia Developer/Instructor

-= Fig Leaf Software


-----Original Message-----

From:

ownerchinwag [dot] com

 [

ownerchinwag [dot] com]On">mailto:ownerchinwag [dot] com]On

 Behalf Of Ian Chia

Sent: Friday, November 19, 1999 11:41 AM

To:

flasherchinwag [dot] com

Subject: Re: FLASH: RE: Challenge?



This is pretty simple really.


If you've got access to Director 7, you'll find a very

similar open-source Lingo demo that I made on the CD in the

Director 7:Beatnik:Example Projects:Astrogrrrl-and-friends folder.


Otherwise, a JavaScript version of a similar thing is at:

http://www.ritzcafe.com.


To convert to F4, use John Croteau's trig library, and port

some relatively simple trig scripts to animate the xy of

each cube.


The harder thing which is missing from this demo is a true z sort.


The nice thing about this demo is the kinetic energy and

momentum from the mouse motion - nice touch.


- Ian


> http://www.method.org/website/experiment/orbital.html

>

> Anyone want to give me a 'simplified' fla of this?

> thanks



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