javascript - arcade physics collision callback for group vs self -

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im checking group collision within using code 

// creating group , adding sprites  policecarsgroup = game.add.group(); addpolicecars(4 , policecarsgroup);

and in update function 

game.physics.arcade.collide(policecarsgroup);

it work fine there no callback function how set tried 

game.physics.arcade.collide(policecarsgroup,function(){         alert("");     });

but not working question how set collision callback function .

you need pass second parameter collide method check collision against, hence it's third parameter callback. see the documentation. try this:

game.physics.arcade.collide(policecarsgroup, policecarsgroup, function() {     alert("collision!"); });

haven't tried it, should work.


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