Colliding instances of a thin prefab among each other with a rigidbody

Questions & Answers
1

Hi,

I have created playing cards in blender which are thin. Now I was randomly spawning the cards in the air with random rotational speeds. When I set the rigidbodies of the cards to discrete collision detection they will sometimes go through the floor so I tried setting the rigidbodies to continuous collision detection. This solved the problem for the cards going through the floor but the cards are still glitching through each other. That is when I tried to set the rigidbodies to continuous dynamic collision detection. Now the cards will get stuck in each other start piling up in a random, physically incorrect, card house.

What is the best way to go with these thin objects and their collision detection, especially among other instances of itself?

Thanks!

2

Hello ! Lowering the mass of the cards will dramaticly improve the collider system and stop them from going through the floor or acting weird!
The collider detection system relies on performance, more mass more force on the object, more force more accel, more accel more distance change over time, the collider system checks each frame, so with less mass less velocity , less distance calculation when hitting… improving performance.
Make some tests in a new scene setting up straigth parallel cards and make a stack with a big set see how many numbers you can stack before they start acting weird then lower the mass and maybe increase thickness!