2D Collider Trigger detection no need Rigibody2D?

Cocos Creator
1

It’s not working, I try to research but have no doc for this case, thank u.

this.collider.on('onTriggerEnter2D', this.onTriggerEnter, this);
    onTriggerEnter(event: ITriggerEvent) : void {
        console.log('Trigger entered:', event.otherCollider.node.name);
        // Your logic here
    }
2

If you are using Cocos Creator 3.x
try this: 2D Contact Callback | Cocos Creator

1 Like
3

I don’t use Rigibody2D, just use Collider to trigger <3

4

I’m pretty sure that both the trigger and the object being detected both have to have a rigid body in order for the box to the engine to identify it.

If you need the trigger to not have collisions, then it can be at a “sensor“ which should be a checkbox.

If you need the thing that’s been detected to not be affected by physics then you could make it “static“ and then keep moving it via whatever input you have.

5

it have been changed to 3.8.x, so in 3.8.x not only needs collider component but also rigidbody component, and you can change it by refering link: Is Engine's Error? - #11 by Tom_k. BTW, we have built a issue(collide Events needs rigidbody in Cocos 3.8x but dont need in Cocos 3.7.4 · Issue #17541 · cocos/cocos-engine · GitHub) to address it.