Corona Geek #122 - December 29th, 2014 - Creating 2D Shadows and the Pros and Cons of Coroutines in Lua

Charles_McKeever · December 16, 2014, 9:35pm

During this Hangout, Corona Developer, Steve Johnson (aka, Star Crunch in the forums) will be talking about Coroutine. Coroutines are an important part of Lua which seem to fly under the radar of many developers. In this segment we’ll discuss what they are, cover some of their pros and cons, and introduce one way of using them together with Corona’s timers.

René Aye from PyroPixel, will also show us how to create 2D shadows effects. Check out this great demo video to see what he’s been up to.

https://www.youtube.com/watch?v=L5qNrGk1cII

https://plus.google.com/b/108159899655420864045/events/co548j2nmdh1lksf8cl77huv2t8

If you have questions or tips around this topic, let’s discuss them here.

Got a topic or guest suggestion for an upcoming Hangout ? Share it here.

Want to be on the Hangout to discuss your app or a specific topic? Let us know and we’ll set something up.

Charles_McKeever · January 5, 2015, 4:33pm

Using coroutines sounds like a great way to optimize certain features of an app. We’ll have to dig deeper into them in 2015. Also, the 2D shadows demo was pretty slick. René has updated the repo several times since the Hangout. Be sure to check for updates if you are experimenting with the 2D Shadows library.

Watch the full discussion here:

https://www.youtube.com/watch?v=wtNuzLwFLxI

… or watch the snack size versions

Using Coroutines

https://www.youtube.com/watch?v=JpbNMIkJ0Mg

2D Shadows

https://www.youtube.com/watch?v=PKp-7V2ENGA

What are your thoughts? Do you have questions about what was discussed?

Charles_McKeever · January 5, 2015, 4:33pm