30 September 2016
ScratchJr is like a younger cousin of Scratch. It's a free app for the iPad or an Android tablet that enables you to experiment with some basic coding. It's designed for younger children than Scratch, so there is not much text in there, and the blocks are simple symbols. If you know Scratch, it won't take long to get started with ScratchJr. But there are quite a few things missing that you might be used to, such as variables, coordinates (go to a particular position), the ability to tell which sprite a sprite is touching, and more. Basically: a lot of the stuff that you use when making games in Scratch! Of course, it's great for younger children because it removes all these things that are hard for them to understand. But for us big kids, the challenge is to come up with some fun games working within what ScratchJr can do.
I previously made a simple game for ScratchJr when it came out, and you can see my first ScratchJr game together with my review here. For Cool Scratch Projects in Easy Steps, I made a game called Super Wheelie. It's a sideways scrolling game, in which you tap your stunt bike to jump over the mushrooms in the road. The game has two levels, and a fun "splash!" sequence when you hit a mushroom and get bounced into the sea. If you get past all the mushrooms, there's a sequence where you roll up to your house. You can see a video of this game below.
As you build this project, you'll learn how you can build games, put your own face into sprites (or "characters" as they are called in ScratchJr), how you can record sound effects and how you can use different scenes for the different levels and sequences. As well as pushing the boundaries a little bit on ScratchJr, it provides a good introduction to the app so that you can start making games of your own, even when you can't get to a computer that runs Scratch.
Like my previous book Scratch Programming in Easy Steps, Cool Scratch Projects in Easy Steps finishes with a handful of short projects you can dive into and tinker with. One of those is another ScratchJr game, called "Baby, I'm a Starfish". In the game you tap a starfish to move it, and have to get it safely to the top of the screen. If it hits another fish or sea creature, it goes back to the bottom. It's a simple but fun (maybe sometimes frustrating!) game. Here's a video. It took me a few goes to get to the top this time, and I did edit out some of the failed attempts!
To find out how to build these projects and get started with coding on your tablet in ScratchJr, check out Cool Scratch Projects in Easy Steps. It's available at Amazon (UK), Amazon (US), and from the publisher. You can also support your local book shop by ordering it there. Just tell them the ISBN is 978-1840787146.