Sprinting feedback

Can someone tell me how to increase FOV and blur the screen a bit when a key is pressed?
After I know that I can add a bit more feedback for when you are sprinting or crouching

Fov is easy:

myActiveCameraEntity.camera.fov = 90;

For blurring you need to apply a post process effect, take a look at these engine examples:




Thanks for the quick response

how would i define myActiveCameraEntity?

For example in the function where you use it:

var myActiveCameraEntity = this.app.root.findByName("Camera");
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