Is there any way to stop an Interpolate once it has started?

ShmirlyWhirl

I have an actor with drag that I apply velocity to. When the velocity gets below a threshold, I have the actor interpolate its position to a specific point.

I then apply a velocity to the actor, but it doesn't seem to take effect until after the actor has finished interpolating. I've tried having the interpolate behavior in various rules, but to no avail.

Is there any way to override the interpolate?

Sorry if this is confusing, I would be more than happy to clarify.

Braydon_SFX

Nope, nothing that know of. Unless you destroy that actor.

ShmirlyWhirl

Thanks for the response. I expected that was the case after some testing, but I was hoping I was wrong.

gyroscope

@ShmirlyWhirl

Hi, A small point to mention: velocity is "made" if you're interpolating an actor's position over time; in other words, when its moving, it has a velocity, so if you add a velocity change if your interpolating an actor's position, it won't kick in until the interpolation has finished...

ShmirlyWhirl

@gyroscope

I get what your saying, but this is what I found playing around with it.

I set up a scene to play around with it. I had a test actor interpolate its position. I can change its velocity while it's interpolating, but that does not affect the actors motion until it has finished interpolating.

gyroscope

Yes, sure, it's because in that case by interpolating an actor's distance over a time creates a velocity value, and this will take precedence over any other velocity attribute.

But for interest, if you wanted something else to be happening to your actor during an interpolation involving velocity, then providing it's not to do with velocity, it'll be OK.

An example:

Timer: After 2 seconds
Change attribute self.Color.Alpha to .4
--
Interpolate self.Position.X to 480
Duration 4 seconds

And two interpolates will work together too...so just not those moving with added change of speed...

Hope this is of some sort of help... (although doesn't answer your question regarding stopping an interpolate)

The_Gamesalad_Guru

This why I wished moved to worked right and then we could use the additive and stacked parts of those behaviors. I've always wanted to know more about those functions maybe I should depart to my lab and do some testing. Egor, fire up Gamesalad and get me coffee!

gyroscope

Yes, Master

:-))

RacetotheMoon

I remember having this same problem.. and if I remember correctly.

Try making your interpolation duration a variable. Then, when your event happens, set that variable to zero. The interpolation should stop and you'll be free to do with that object as you please.

gyroscope

@RacetotheMoon Hi, that would be great, but unfortunately, changing the duration to zero, it'll stop the interpolation OK, but the actor will then jump to its final set destination.

RacetotheMoon

@gyroscope Well.. I don't remember having that problem. Perhaps I also had the location as a variable, it's been too long and I'm not in a postion to open my project to see how I did it. I do know there's a way around it, however..

tenrdrmer

Give this a read and check out these project files
http://forums.gamesalad.com/discussion/21933/interpolation-revelation#latest
Cheers
Aaron

gyroscope

@tenrdrmer Looks interesting approach, Aaron; it'll be interesting to see if your solution is similar to mine. :-) I'll check it out now.

@gyroscope Well.. I don't remember having that problem. Perhaps I also had the location as a variable, it's been too long and I'm not in a postion to open my project to see how I did it. I do know there's a way around it, however..

@RaceToTheMoon Yes, you're right, there's more to it than just the duration set as an attribute... the destination as an attribute too, as you say, and a constrain needed, as I discovered. :-)

@ShmirlyWhirl Anyhow, this was intriguing me so I did a little test, (before I looked at the files from @tenrdrmer ) and made game file to stop an interpolate with a mouse click; hopefully it can be modified for your use.

Edit: excellent solutions from @tenrdrmer and although mine's is a bit different; all might be useful in different situations, hopefully.

tenrdrmer

the demos I posted up for download are the project files to the old arcade links from that old thread

PixelMetal

I have an actor with drag that I apply velocity to. When the velocity gets below a threshold, I have the actor interpolate its position to a specific point.

I then apply a velocity to the actor, but it doesn't seem to take effect until after the actor has finished interpolating. I've tried having the interpolate behavior in various rules, but to no avail.

Is there any way to override the interpolate?

Sorry if this is confusing, I would be more than happy to clarify.

You could set a new interpolate to the current location of the object. Have it read in the attributes you want to stop moving with interpolate from a game or actor-level attribute. This works perfectly in my current project.

ShmirlyWhirl

Thank you everyone for your input. It occurs to me I did not explain my problem too well.

However, thanks to @gyroscope and @RacetotheMoon, I was able to get the result I wanted by having the duration be a variable and changing it to zero.

Thanks guys, I would have never thought to try that.

EDIT:
I take that back, occasionally it still snaps to the end position. I'll play around with it, see what I can come up with.

gyroscope

EDIT:
I take that back, occasionally it still snaps to the end position. I'll play around with it, see what I can come up with.

Hi, possibly you've made the constrained attribute, the one that goes into the "To:" in the Interpolate, as an integer, when it should be a real?

tatiang

How did I miss this thread?! Clever solutions... and especially timely since I just realized I want to be able to pause an Interpolate.