is there a way for kinematic & kinematic or static & static collisions?

Comments

• hgvyas123 Guru

  January 2013

  you can create one dynamic body and use weld joint of that with kinematik or static body
  
  and if your body are not polygon then go with tntcollision
  
  

  Likes: ar2rsawseen

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• kontinyu Member

  January 2013

  well i read about that too. but i'm gonna have 300-500 physics object on my scene.
  it's heavy alone by itself. wouldn't be too hard for mobile devices to handle that much of bodies and welds etc?
  
  about other option; i don't know much about tntcollision. is such thing possible with it. is it easy to use & understand?
  
  

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• hgvyas123 Guru

  January 2013

  yup easy to understand and perfect if you dont need physics simulation on the other hand 300-500 object per scene means not on the screen at the same time right?

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• kontinyu Member

  January 2013

  nope, they are all in the same scene simultaneously. But they are not moving so it's not THAT hard to simulate. actually they are all bits of a "tree" i need collisions only to check whether branches and leaves overlapping or not.
  i will check tntcollision.
  what do you mean "if you dont need physics simulation" ?

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• twisttap Member

  January 2013

  @kontinyu if you do not need and forces/impulses etc. related to physics but your only aim is to check for collisions then tnt is better then box2d.

  Likes: kontinyu

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• john26 Maintainer

  January 2013

  I agree with @twisttap. Dynamic bodies are the raison d'etre of Box2D. The other body types are just there to support them. If a kinematic body passes through a static body, for example, I don't think Box2D even regards this as a collision. So it is impossible to obtain collision information. It might be a good idea to ask on the Box2D forum as well...

  http://giderosmobile.com
  https://github.com/gideros/gideros
  https://www.youtube.com/c/JohnBlackburn1975
  

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• hgvyas123 Guru

  January 2013 Accepted Answer

  By physics simulation i mean moving the objects with help of box2d like with the help of gravity or setlinearvelocity or applyforce from your post it seems like you dont need that.
  
  

  Likes: kontinyu

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• kontinyu Member

  February 2013

  i will check tnt. thank you all guys.

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• twisttap Member

  February 2013

  @kontinyu Are you writing a tree grow algorithm ?

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