Re: FLASH: giving an object velocity

[Marc Hoffman, Poison Dart Frog Media]

At 11:28 PM 4/5/00 , you wrote:


>My new and improved, super-revised question is: how does one give an object

>decaying velocity (velocity + gravity) in flash?  For example, how do I make

>a movie in flash where I throw an object and slows over time to a stop.

>(Not when I sop moving my mouse.)


Not sure how to code it, but an bject thrown through the air does not slow 

down horizontally (except minimally, due to air resistance). Gravity 

affects only the rate of vertical drop. Falling velocity increases every 

second by a rate of 32 feet per second, so an object that begins with no 

vertical thrust (just horizontal thrust) is falling at 32 feet/second at 

the end of the first second, but is falling at 64 feet/second at the end of 

two seconds. So you could either code the motion so that the x change is 

linear while the y change is logarithmic, or you could just draw a motion 

path that's eliptical and make the object follow it (less true to life but 

probably convincing enough).


Marc Hoffman


Poison Dart Frog Media

http://www.dartfrogmedia.com



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