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Scratch 2.0 Beginner's Guide: Second Edition

You're reading from   Scratch 2.0 Beginner's Guide: Second Edition Create digital stories, games, art, and animations through six unique projects.

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Product type Paperback
Published in Apr 2014
Publisher
ISBN-13 9781782160724
Length 296 pages
Edition 1st Edition
Tools
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Author (1):
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Michael Badger Michael Badger
Author Profile Icon Michael Badger
Michael Badger
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Table of Contents (13) Chapters Close

Preface 1. Welcome to Scratch 2.0 FREE CHAPTER 2. A Quick Start Guide to Scratch 3. Creating an Animated Birthday Card 4. Creating a Scratch Story Book 5. Creating a Multimedia Slideshow 6. Making an Arcade Game – Breakout (Part I) 7. Programming a Challenging Gameplay – Breakout (Part II) 8. Chatting with a Fortune Teller 9. Turning Geometric Patterns into Art Using the Pen Tool A. Connecting a PicoBoard to Scratch 1.4 B. Pop Quiz Answers Index

Time for action – increasing ball speed

There are several criteria that we could use to increase the ball speed, such as score or number of hits. However, we're going to increase the ball speed based on the duration of the game. The steps are as follows:

  1. To manipulate the ball speed as the script runs, we'll need a variable. So, create a variable named speed for the ball.
  2. Find the ball script that begins with when I receive (play) and add a set () to () block from the Data palette at the top of the stack. Select the speed variable and give it a starting value of 5.
  3. From the Sensing palette, add a reset timer block. We'll use this block with the understanding that we won't use reset timer anywhere else in the project.
  4. Inside the forever block, add an if () then block.
  5. We're going to evaluate whether or not the timer block is greater than 10 by snapping the () > () block from the Operators palette into the if () block. Then, we will add the timer block from the...
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