Lesson 3 - TypeError: Cannot read property '0' of undefined

[jasoniangreen]

It seems that Easel.js have changed their api slightly, since I am sure this worked when I was using version 0.7.1. The offending line of code can be found in line 21 of app/lib/main.js. It seems they have moved the delta to the top level of the event.

var delta = event.delta;
this.rotation -= delta/1000*100;