Bodies are null in beginContact and endContact events

[pmndrs]

Bodies are null in beginContact and endContact events

[marcofugaro]

Hey. As you can see from the code, the dispatchEvent() is called first, and then the body references are freed.

cannon-es/src/world/World.ts

Lines 868 to 873 in 2824846

	for (let i = 0, l = additions.length; i < l; i += 2) {
	beginContactEvent.bodyA = this.getBodyById(additions[i])
	beginContactEvent.bodyB = this.getBodyById(additions[i + 1])
	this.dispatchEvent(beginContactEvent)
	}
	beginContactEvent.bodyA = beginContactEvent.bodyB = null

You probably are doing something asynchronous in your addEventListener callback, so I suggest you first save bodyA and bodyB in variables and then do the asynchronous bit.

world.addEventListener('endContact', (event) => {
  const { bodyA, bodyB } = event

  // asynchronous bit, bodyA and bodyB are saved in the variables
})

Also, check out the trigger example, it correctly uses bodyA and bodyB there.

[petkoneo]

Yes that was the issue. Thanks for your help. :)