cannon.js registering collision without colliding

Question

I'm creating simple car game with cannon.js and I'm struggling with this.

What I want to do:

When I run with car into another object (eg sphere) I want to know about it.

For example increase score or whatever, but without applying forces to both objects.

What I unsuccesfully tried:

Use

chassisBody.addEventListener("collide",function(e){ "mycode"};

with combination groups

var GROUP1 = 1; etc..

but point of groups I guess is mark which object I want and don't want to collide, and I want them to "collide" but without actually applying forces to them, only registering that their bodies intersected and firing my scoring code etc.

( I added threejs tag just in case someone might have stumbled across this, and I'm using it anyway )

Answer 1

The following code is taken from this example. I tested with your event listener callback and it worked fine.

Set collisionResponse of the rigid body to 0 :

b2.collisionResponse = 0; // no impact on other bodys
b2.addEventListener("collide", function(e){ console.log("sphere collided"); } );