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	<title>Real-Time Physics Simulation Forum</title>
	
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	<updated>2014-08-14T07:49:17+00:00</updated>

	<author><name><![CDATA[Real-Time Physics Simulation Forum]]></name></author>
	<id>https://pybullet.org/Bullet/phpBB3/app.php/feed/topic/10055</id>

		<entry>
		<author><name><![CDATA[TeKilla]]></name></author>
		<updated>2014-08-14T07:49:17+00:00</updated>

		<published>2014-08-14T07:49:17+00:00</published>
		<id>https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=33807#p33807</id>
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		<title type="html"><![CDATA[ignore collision response on a rigidbody]]></title>

		
		<content type="html" xml:base="https://pybullet.org/Bullet/phpBB3/viewtopic.php?p=33807#p33807"><![CDATA[
Hello,<br><br>Im facing a problem using bullet physics, currently, I have a rigidbody named X (with no gravity and a mass of 0) which i can destroy by shooting at it. When I shoot on it, it create cubes which are pushed into X to make them fly away, like an explosion.<br><br>The problem is that those particles are actually pushing back X when they collide with it and I would like to avoid this.<br><br>Same goes if I drop a cube on top X, when it touch, X is pushed down and fall to the ground.<br><br><br>I tried using the addContact callback to detect collision between rigidbody of type X and particles, and cancel the applied impulse, the restitution etc...<br>I also tried custom collision filter to disable collision response for X, but i couldn't manage to do it.<br><br>I would like to know if bullet provide a way to deal with my problem or if there is kind of a trick to do it.<br><br><br>Thank's and sorry for my english mistakes <img class="smilies" src="https://pybullet.org/Bullet/phpBB3/images/smilies/icon_smile.gif" width="15" height="15" alt=":)" title="Smile"><p>Statistics: Posted by <a href="https://pybullet.org/Bullet/phpBB3/memberlist.php?mode=viewprofile&amp;u=10965">TeKilla</a> — Thu Aug 14, 2014 7:49 am</p><hr />
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