Hi!
I am trying to use collision detection in a phaser3 game, the callback function doesn’t seem to be firing.
First, in my scene I add two sprites:
playerFish = this.physics.add.sprite(
this.game.scale.width / 2,
this.game.scale.height / 2,
'fish').setOrigin(0.5)
const plankton = this.add.sprite(20, 20, 'plankton')
Then, I add the code for collision detection:
this.physics.add.collider(playerFish, plankton, () => {
console.log('collision!')
},
null,
this)
I also tried changing “collider” to “overlap” but still not having any luck. I would expect the callback to be triggered and the text “collision!” to be logged to the console, but for some reason nothing happens when these sprites overlap. 
Am I missing something else here to set up the collision detection? Thanks!