Rotation of arcade physics body

[Doug]

Hi

Forgive me if I've missed this, but I can't find it in any of the documentation.

Is there a way to specify the the rotation of an arcade physics body?  I can rotate the game object image, but that has no effect on the physics body.

I would have expected a .setAngle or .setRotation method to be available on Phaser.Physics.Arcade.Body.

Seems such a simple one to miss, but I keep needing this and having to use matter, which is just a little more fiddly.

Thank you!

[snowbillr]

I'm pretty sure you can just set the property `angle` or the property `rotation` on the an Arcade physics body. I believe `rotation` uses radians.

[Doug]

Thanks.  I tried this, but it doesn't work.  I tried the following:

let t = this.physics.add.sprite(100, 100, 'sprites', 'windSock_0000');
t.body.rotation = 1;

...and

let t = this.physics.add.sprite(100, 100, 'sprites', 'windSock_0000');
t.body.angle = 30;

Interestingly it doesn't give an error.  It just does nothing.

I also tried with image and staticImage gameobject types.

Do you think this is maybe a bug?

[snowbillr]

I just played with a simple example in the labs and it seems like if you do a `t.angle = 30` it should work.

 

But looking at the source, I don't understand why...

[snowbillr]

Okay. So it looks like you can rotate any GameObject with `angle` or `rotation`: https://github.com/photonstorm/phaser/blob/master/src/gameobjects/components/Transform.js

And the Arcade Physics Body uses that value from the GameObject for its physics - https://github.com/photonstorm/phaser/blob/master/src/physics/arcade/Body.js#L863

So TL;DR set the rotation on the game object, and arcade physics will use that when it does its calculations for the body.

[Doug]

Thanks, that's really kind of you.  Just did the same to check it and it still fails here.  It rotates the game object, but not the physics body.

let t = this.physics.add.sprite(200, 200, 'sprites', 'windSock_0000');
t.angle = 30;

 

[digitsensitive]

This question has already arised on github: https://github.com/photonstorm/phaser/issues/3570

It won't work with Arcade Physics, use Matter Physics instead.

[Doug]

Great thank you. Will do. 

[snowbillr]

Glad there was a real answer here, sorry I was feeding you bad information!

[Doug]

No problem at all.  I really appreciate that you tried.