How do I create "Collision groups" Physics behavior?

I want to create Collision groups that allow objects not to collide with other objects in the same group. Its same as Collision group in chipmunk Behavior (behavior-chipmunk-physics_t110815?&hilit=group)

I tried:

https://drive.google.com/file/d/1ECoj2L ... sp=sharing

I don't have any different idea. help me, any idea?

Thank you!

I think when you enable/disable physics collisions, this affects all instances of both objects. You can't enable/disable collisions for specific instances.

Bump! help me, any idea?

Bump! help me, any idea?

Please allow more time than 50 minutes before bumping your own thread.

Users come from many different time zones so allow time fr a response.

It is generally accepted that you can 'bump' your own thread after 24 hours if no answer has been forthcoming.

Thank you.

gameba

There are not many options -

1. temporary disable Physics behavior when you don't need collisions

2. use different objects instead of instances of the same object.

3. use Chipmunk.

gameba

There are not many options -

1. temporary disable Physics behavior when you don't need collisions

2. use different objects instead of instances of the same object.

3. use Chipmunk.

Thank you for your reply. option 1,2 not suitable for my game.

I tried chipmunk, I received poor performance than box2d.

100%CPU (chipmunk ) vs 55%CPU box2d (on mobile). (compare 350 physic objects )

It's not good for mobile so I use box2d.

Wow. Do you really need to have 350 objects with enabled physics, all at once, on a small mobile screen?

What kind of game is it?

Wow. Do you really need to have 350 objects with enabled physics, all at once, on a small mobile screen?

What kind of game is it?

Physic draw. Brain dot