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AppGameKit Classic Chat / Using prismaticjoint to approach two sprites

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BraindeaD
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Joined: 30th Mar 2008
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Posted: 6th Mar 2012 09:48
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Hi all,
I'm trying to use a prismaticjoint to hold together two objects which may be separated but then again approaching.
The problem is I do not know how to do that when they are approaching, stop at a certain distance.
To create the joint do this:

createprismaticjoint (1, SPR1, spr2, getspritex (SPR1) +30, getspritey (SPR1) +30, 0.1,0, 1)

Please, someone knows what should be included to stop bringing the two sprites when, for example, 80 pixels away?

Thank you very much.
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baxslash
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Joined: 26th Dec 2006
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Posted: 6th Mar 2012 10:57
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You could, once you know they are within 80 pixels, reposition them the right distance apart:


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BraindeaD
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Posted: 6th Mar 2012 11:01
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Thanks, Bax.
I'll try this evening and tell if it works for me!
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Paul Johnston
TGC Developer
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Location: United Kingdom
Posted: 6th Mar 2012 17:21
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You can use the command SetJointLimitOn() with the lower and upper bounds being multiples of the vector specified when creating the joint. For example in your case a limit to 0.5 to 1 would allow movement along the X axis between 0.05 and 0.1 units which is half the vector length to the full vector length.
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BraindeaD
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Posted: 6th Mar 2012 19:39
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Hi all,
I've tried both methods and works well!
Using jointlimits the movements is smoother.

Thanks for your help Baxslash and Paul.
Regards.
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