RE: FLASH: giving an object velocity

[Kenneth.Austin]

velocity isn't too bad in actionscript.  actually i think you're talking

about a gravity effect, right?  basically you set a controller movie clip

with three frames, and an object movie clip.  name the object instance name

"object".  now edit the controller mc and add two frames so it's 3 frames

long.  on the first frame set a variable "speed" to 1 ( or whatever you want

it's initial speed to be.) on the second frame set an action as follows:


Set Property ("/object", Y Position) = GetProperty ("/object", _y) + speed

Set Variable: "speed" = speed*1.2


then on the third frame set these same actions, but with a Go To and Play

Frame 2 action as a third action


as the mc loops it sets the position in increasing increments, giving the

illusion of acceleration. i add the speed because the y gets larger as it

goes down, you can subtract speed to send the object upwards. if you

multiply by .9 or something less than one, the object will decellerate.


there is a great tutorial on colin moock's site entitled programmatic

movement, i strongly suggest this to anyone as a beginning to moving things

around with actionscript



hope this helps




Kenneth Austin

Hands On Labs


KnowledgeNet

14624 N Scottsdale Rd, Suite 300

Scottsdale AZ 85254

Email:	<

Kenneth [dot] Austinknowledgenet [dot] com

>

Web:	<www.knowledgenet.com>



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