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 Post subject: Child of parent needs its own collision seperate from parent
PostPosted: Mon Aug 08, 2011 11:00 pm 
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Joined: Mon Aug 08, 2011 10:24 pm
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I'm having a problem that no one anywhere seems to know anything about. I have been to 2 other forums and have got no answers at all. But what I am needing is the child object to have bounds while still following the parent. To explain further with the parent it is dynamic and bounds set to convex hull and compound. and the child it is static. But with the add to parent button which I know add the bounds of the child to the parent and bounds work fine, but when the child has motion the bounds are locked and doesn't follow the movement of the child. and without the add to parent button it is kinda a slap in the face the bounds only work on dynamic objects when I'm needing it to work on a static surface. So can anyone help or give any suggestions. It would be enormously great to have this problem over with it has been weeks on this and I haven't got anything done at all on my project.


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 Post subject: Re: Child of parent needs its own collision seperate from parent
PostPosted: Tue Aug 09, 2011 5:01 am 
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I'm actually finding the whole question very very difficult to wrap my head around. Can you provide any examples of what you want and what's actually happening?

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 Post subject: Re: Child of parent needs its own collision seperate from parent
PostPosted: Tue Aug 09, 2011 9:26 pm 
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Joined: Mon Aug 08, 2011 10:24 pm
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I don't see any option to attach a file


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 Post subject: Re: Child of parent needs its own collision seperate from parent
PostPosted: Wed Aug 10, 2011 5:14 am 
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Joined: Sun Apr 12, 2009 3:51 pm
Posts: 522
Location: Michigan
If you like, you can get an account at FileDen and post the link back here.

What I am reading into this, you have two objects (let's call the parent object Boy) and you have the child object (called "Boy's Ball") ok?

Boy is set as dynamic, bounds convex hull, and compound. While Boy's Ball is static correct?

Ok this is part where you lose me; "but when the child has motion the bounds are locked and doesn't follow the movement of the child".

The child is supposed to follow the parent not the other way around. So you should be moving Boy and not Boy's Ball. If you want the objects to move with each other but still have some kind of independence of their own please give some detailed verbal examples.

I hope I am understanding you correctly. If I am not reading this correctly, please take a snap shot or two and post them to Imageshack. You don't even need an account to toss pictures there.

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 Post subject: Re: Child of parent needs its own collision seperate from parent
PostPosted: Wed Aug 10, 2011 1:40 pm 
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Joined: Mon Aug 08, 2011 10:24 pm
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I went to fileden and apparently you have to have a phone and every thing on the planet to register and I don't have a phone of my own. I don't know why this forum just don't let people upload files.


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 Post subject: Re: Child of parent needs its own collision seperate from parent
PostPosted: Wed Aug 10, 2011 3:11 pm 
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Joined: Tue Jun 16, 2009 8:07 am
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Location: Donegal Town, Co. Donegal, Ireland
I find mediafire a much better file sharing site

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 Post subject: Re: Child of parent needs its own collision seperate from parent
PostPosted: Wed Aug 10, 2011 4:48 pm 
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Joined: Tue Nov 23, 2010 8:37 pm
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Location: Bradenton, FL
dropbox is also useful

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 Post subject: Re: Child of parent needs its own collision seperate from parent
PostPosted: Wed Aug 10, 2011 6:40 pm 
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Joined: Mon Aug 08, 2011 10:24 pm
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Ok mediafire worked great and here is the link

http://www.mediafire.com/?lnbc6bt9ur76ilv


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 Post subject: Re: Child of parent needs its own collision seperate from parent
PostPosted: Mon Aug 15, 2011 9:52 pm 
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Joined: Sun Apr 12, 2009 3:51 pm
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Location: Michigan
THE wrote:
I went to fileden and apparently you have to have a phone and every thing on the planet to register and I don't have a phone of my own. I don't know why this forum just don't let people upload files.



No that is a crap advertisement. You don't need anything. There is a skip some place on the page. But I just hit back button on my browser and it works. The thing I don't care for about media fire and other sites is the sit and wait to download. Fileden doesn't plague you with waiting or ads on download. In fact it is a harder to wade through the ads to upload than it is for people to download. I want people to download my files without issue and that is why I use it.

Sorry about not warning you about the crap ads at start up.

-------------8<----------

Ok I took a look at what you are talking about and could see a way of "cheating" by adding an invisible plane above the visible plane but this would not be true accurate physics. Also I assume what you mean by effecting the environment would be the rotating child to go tumbling off to the right since it has the rotation. But this would violate the parent/child relationship. I guess the next thing to consider in this puzzle you have presented is; why do they need the parent/child relationship in the first place?

For example; The child on the left could be remove from it's parent and switched from static to ridged body to have both effect on the other objects and plane below. However as long as it is constrained by the parent cube the link will follow.

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 Post subject: Re: Child of parent needs its own collision seperate from parent
PostPosted: Tue Aug 16, 2011 7:03 am 
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Joined: Thu Sep 06, 2007 8:17 am
Posts: 5144
Location: West Virginia, USA
THE wrote:
I don't know why this forum just don't let people upload files.


Because we don't want to run afoul of the MafIAA (RIAA or MPAA). Also, we have loads of spammers that would love the opportunity to upload $NASTY_COOTIE for our users to get trapped in. It is a conspiracy created by The Man to trap the unwary! :shock:

Lastly, allowing uploads requires server space and bandwidth both of which have been problems with BlueHost in the past. And, since this is still Apollos baby, I won't make that decision unilaterally. There are plenty of file hosting sites out there so it really isn't a problem.

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 Post subject: Re: Child of parent needs its own collision seperate from parent
PostPosted: Tue Aug 16, 2011 11:11 am 
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Joined: Sun Apr 12, 2009 3:51 pm
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Location: Michigan
Yeah I agree mostly with that last part since A) it would be improbable to infect a .blend file and B) there are tons of easy to use free file slinging sites out there. If I did download an executable, it would be scanned by 3 viral programs since this is my Dads main business server I use. I also didn't mean to sound like I am only in support of Fileden since all those sites have pros and cons.
------------------>>>Insert Spam Here<<<------------------
I am still wrapping my head around this issue you have. I wonder if it would work for your project to use object tracking instead of parenting? It is apparent you are doing something with the BGE, and I don't wish to pry but I could use some kind of idea of how this will be applied to your project.

Sometimes it is a matter that we tend to think "This is the way it has to be..." and in reality there is some kind of other solution available.

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