Detecting current rotation with Paper.js

Question

I'm making a small shoot 'em up game with Paper.js, but I'm unable to find that Paperscript provides any way to get the current rotation of my group of items.

In the code beneath, rotating 'circlegroup' with Q and E keys, should affect the WASD navigation, moving the item in the direction that the 'nose' of the object is currently pointing at. I figure that I need to get the current rotation of my items in order to affect the navigation. Does Paper.js provide any way to do this?

You can see/edit the Papersketch here

bigcircle = new Path.Circle({
  radius:10,
  fillColor: 'grey',
  position: (10, 20),
  selected: true
});

smallcircle = new Path.Circle({
  radius:5,
  fillColor: 'black'
});

var circlecontainer  = new Group({
  children:[smallcircle, bigcircle],
  position: view.center
});


var circlegroup = new Group({
  children: [circlecontainer]
});

function onKeyDown(event) {
  if(event.key == 'w') {
    circlegroup.position.y -= 10;
  }
  if(event.key == 'a') {
    circlegroup.position.x -= 10;
  }
  if(event.key == 's') {
    circlegroup.position.y += 10;
  }
  if(event.key == 'd') {
    circlegroup.position.x += 10;
  }
  if(event.key == 'q') {
      // hold down
    circlegroup.rotate(1);
  }
  if(event.key == 'e') {
      // hold downw
    circlegroup.rotate(-1);
  }
}

Answer 1

No, there's no rotation property stored per object. You'll need to define it per object or class yourself. Take a look at the Paperoids game included in the Github Repository for a more detailed example.