Beginner question, and how to "not" colide

[Rati]

Hi ! i'm a beginner with Bullet. i want to use it in a 2 players shooter game. i want to shoot "light bullet" (star wars kind). but i want it to only hit ennemis,and i want my bullet go trought them, not stop on them.

And i want it to notcollide all obsacles, or the other player. What should i do ?

Rati

[kloplop321]

If its a lazer, just use a raycasting that supports multiple results.