Bullet: Activate on Collisions or Start Sleeping

[myke3d 10]

Hi guys, 

 

I've done a domino effect and I like it. But now I'm trying to use it on irregular terrain. I've had one simple solution that is like doing it in real live, I created some boxes on the bottom of each domino piece and it solved it.

 

But I want to know if it's possible to do a Activate on Collision solution that the first trigger touches the first piece and it becomes active and then touches the second piece and becomes active and so on.

 

Or at least a way to enable sleeping in the first frame and then it disables when something collides.

 

 

What I'm not looking for is a random attribute solution or a user defined map that enables the active state.

 

 

Hope you understand me.

 

Myke

Active_on_Colision.hipnc

[cwhite 60]

If you're using H15, take a look at the Collision Attributes section of http://www.sidefx.com/docs/houdini15.0/nodes/dop/rbdpackedobject

You can set the objects to be initially inactive, and then use the min_activation_impulse and activation_ignore point attributes to let the solver activate the objects at the instant that a collision occurs.

[myke3d 10]

Thanks cwhite... but in the help they don't explain, they just mention this attributes. Do you have any idea how I can use this 2 attributes?

[Farmfield 325]

Here's a setup using min_activation_impulse to activate objects on collision. Perhaps it can help the next person who wonder how to set this up.

sleeping.hiplc

 

Edited June 16, 2016 by Farmfield

[jeannel 3]

On 16/06/2016 at 3:33 PM, Farmfield said:

Here's a setup using min_activation_impulse to activate objects on collision. Perhaps it can help the next person who wonder how to set this up.

sleeping.hiplc

 

brillant !

[Farmfield 325]

I have no clue what this was about, though - that was 13 months ago, I gotta download and check the file.

[Marcocheng 3]

Emm... seems this method cannot mix with constraints network... because the constraint is not able to detect impact

[ParticleSkull 81]

Hey guys,

I think the best option here would be to make the objects start sleeping.

Just create an attribute i@bullet_sleeping = 1;  (at sop level)

Start_Sleep_v100.hiplc