We recently ran a code camp for high school students, teaching them to work with Processing for Android.  The goal of the three day camp (17-19 April 2018) was to create a game using for Processing for Android.  Along the way the students would be introduced to various creative coding frameworks and working processes.  It turned out to be a highly enjoyable 3 days.   

The code camp was run by "SDB Innovation" with myself and 2 other teachers.  The link to the website for the course (and future courses) is here.  The code used in the course is a mixture of custom and modified Processing code.  The main game is a modification of Andres Colubri's code for an asteroid game (found in Processing for Android).  If you want to check out the code that was used it is all at the link above.