Digital Workshop

Hi Folks
I have been trying to vary the speed of an object following a path. I have used variables in the time parameter etc. but to no avail.
Any thoughts would be appreciated. Hopefully I'm not missing something too obvious.
Cheers
Paul

Add your Opus version to your profile > Top Right > User Control Panel

And including your publication type in the question may also be useful - Opus Pro (exe) or HTML5 or Flex.

If you're scripting, then the second parameter of time alters the speed, IE the longer the time (secs), the slow the object traverses the path.

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Cheers Mack,
I have done that and it works fine but when I vary the time variable(while object is following path) no change of speed takes place. It works ok with the move command but I want the object to follow a crooked path. Outputting to HTML5.
Cheers
Paul

Hi Paul,

If you are trying to call FollowPath once and change the time parameter whilst this single call is executing - then no, I don't think this is how Opus works. The function has to complete the segment of the path specified with start / finish over the given time.

In theory the answer is simple, as you'd simple call FollowPath numerous times with a small segment - IE start=0 and finish=1 and increment these values for each iteration. That way if the time parameter has changed the speed over the segment would change.

HTML5 is spanner in that idea because calling the FollowPath more than once requires that the wait parameter be true and HTML5 appears to ignore this - however, if you look at the Opus.js code - the function does take a callback once its complete and using that we can achieve the same concept.

It works by calling the FollowPath function with the last parameter as another function call to execute once the FollowPath is complete. This new function call, checks where on the path the object is and then increments the segment to travel if finish has not reached 100% and calls the function with FollowPath again.

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Cheers Mack but cant get it to run.

As in can't load it into Opus or you can't get the published HTML5 files to run?

I've just downloaded the zip and checked and it seems fine.

Here's the output:

http://sandbox.interaktiv.co.uk/forum/path/

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