How to shoot rigidbodies through mesh collider with no collision (one way)?

Hello,
I have a tower which is shooting projectiles. The tower has a mesh collider, so my player can't run through it. The problem is, that my projectiles (rigidbodies) are shooting weird, because of the mesh collider, but I need a collider because of my player.
Without the collider, the projectiles are flying normal.

Maybe someone has an idea.
Thank you.

 

I think what you are looking for is layer-based collision detection
https://docs.unity3d.com/Manual/LayerBasedCollision.html

You will want your projectiles and towers to be on a different layer (you can do this in the inspector).
Then in Project settings -> Physics, you can disable the collisions between them in the Layer Collision Matrix.

 

Thank you, I will try it.