Book Image

Scratch Cookbook

By : Brandon Milonovich
Book Image

Scratch Cookbook

By: Brandon Milonovich

Overview of this book

Scratch 2.0 is an easy to use programming language that allows you to animate stories and create interactive games. Scratch also gives you the capability of using programming to calculate complicated calculations for you. Scratch Cookbook will lead you through easy-to-follow recipes that give you everything you need to become a more advanced programmer. Scratch Cookbook will take you through the essential features of Scratch. You'll then work through simple recipes to gain an understanding of the more advanced features of Scratch. You will learn how to create animations using Scratch. Sensory board integration (getting input from the outside environment) will also be covered, along with using Scratch to solve complicated and tedious calculations for you. You'll also learn how to work through the exciting process of project remixing where you build on the work of others. Scratch Cookbook will give you everything you need to get started with building your own programs in Scratch that involve sounds, animations, and user interaction.
Table of Contents (17 chapters)
Scratch Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

The sensor board button


Our PicoBoard also has a built-in button, as shown in the following image. This can be handy for anything where you might want a button to be pressed in your programs.

Getting ready

This recipe will explore checking to see if the button has been pressed. We'll do this by creating a program where the sprite will move across the screen when the button is pressed.

All you need to do to get this recipe ready is to open a new Scratch file and make sure your PicoBoard is fully functional. Also note that we are using a different sprite in this program called duck1:

Of course, you can use any sprite you'd like.

How to do it...

Follow these steps to implement button use in your program.

  1. Drag over a block.
  2. Drag in a forever if block from the Control category.

  3. Drag from the Sensing category the block into the conditional block from step 2. You'll have:
  4. Within the conditional block, drag a move () steps block from the Motion category.

  5. Attach to the block from step 4 an if on edge...