Time is an illusion. Lunchtime doubly so.
— Douglas Adams
We are starting a new, probably more or less regular, thing today: answering viewer questions.
In the first of the Q&A episodes, I am talking about timers: How to arrange something to happen after a specific time delay. This principle is generally useful for many games and simulations. We also get bit more practice with int variables.
Concepts discussed: time delay, variables, counting
If a man writes a book, let him set down only what he knows.
I have guesses enough of my own.
— Goethe
Alright, now it finally starts getting interesting! After the previous talk about installation, now we’re getting started actually doing stuff.
Watch this episode to get the first feel for working with Greenfoot, and see what classes and objects are all about.
Concepts discussed: class, object, method, instance, return value, return type, void, int, boolean
And, as I said in the video: Follow @JoyOfCode on Twitter to get updates when new episodes are posted.
Scenario download for this episode: hedgehogs.zip (save and unzip before opening)