gistfile1.js

class Joystick extends Phaser.Sprite {
	constructor(x, y) {
		super(game, 0, 0, 'background');
		this.anchor.setTo(0.5, 0.5);
		/* Pin indicator - what players think they drag */
		this.pin = game.add.sprite(0, 0, pin);
		this.pin.anchor.setTo(0.5, 0.5);
		this.addChild(this.pin);
		/* Invisible sprite that players actually drag */
		var dragger = this.dragger = game.add.sprite(0, 0, null);
		dragger.anchor.setTo(0.5, 0.5);
		dragger.width = dragger.height = this.width;
		dragger.inputEnabled = true;
		dragger.input.enableDrag(true);
		this.addChild(dragger);
	}
}