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AppGameKit Classic Chat / Need help with joints

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lilpissywilly
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Posted: 25th Feb 2012 10:23
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I'm trying to figure out exactly what the different joints do by testing, but the joints just disappear after being created.

I've set up this function to test a joint when "m" is pressed on the keyboard. I added the delay to see if anything actually happens and while the program is sleeping for that second there is a joint but it's gone afterwards. I've tried different x-y values.



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KareDev
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Posted: 25th Feb 2012 12:42
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Wish I had a proper response to your problem, however, the only advice I can offer is that the documentation states that you should avoid using the "sleep" command for more than 1 frame. Could this be causing a problem with your test?
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lilpissywilly
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Posted: 25th Feb 2012 12:47 Edited at: 25th Feb 2012 13:39
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Yes the sleep was not originally in there but then I never even saw the joint, while sleep is active I can now actually see the joint with physicsdebugOn.


Edit:

I should add that the sprites being tested on are dynamic physics sprites that when the joint is made are resting at the bottom of the screen

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baxslash
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Posted: 25th Feb 2012 14:30
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Is the joint definitely gone? What happens if you move the sprites with a mouse joint?

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lilpissywilly
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Posted: 25th Feb 2012 15:49 Edited at: 25th Feb 2012 15:52
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Yes it appears to be gone, the sprites move independently of eachother. Also the PhysicsDebugOn shows when there is a joint.

I wish "getJointExists()" ..existed

Baxslash, this is a continuation of my "magnetism" problems, I'm trying to determine which joint would be most appropriate, but can't even get a joint to survive save the weld joint

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baxslash
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Posted: 25th Feb 2012 20:53
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I'm fairly sure I'll be able to help if you can share more code. If you don't want to add it here then email me. I have been working a lot with joints recently and may very well see the problem.

I might be able to resolve your magnetism problem too, who knows

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lilpissywilly
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Posted: 25th Feb 2012 21:08
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I will do so, I just have to clean up what I'm currently doing in there so you can actually run something. I've started a new try on magnetism that I'll disclose in an email

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baxslash
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Posted: 25th Feb 2012 21:42
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OK, I look forward to it

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lilpissywilly
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Posted: 6th Mar 2012 09:46
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Did you perhaps get a chance to look at it bax? any input appreciated

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baxslash
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Posted: 6th Mar 2012 10:01
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Hi, sorry yes I did but I've been a little distracted. I'll take another look and let you know. I forgot, sorry!

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baxslash
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Posted: 6th Mar 2012 10:52
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Mind if I call you lil? Very neat and organised code. It was easy to follow and add to!

Here's a function I added to your code that works quite well (just call it from your main loop):


You could add to it by making triangles repel each other maybe...?

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lilpissywilly
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Posted: 6th Mar 2012 12:16
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Thanks! I will try this a bit later

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