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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 – checking for game over

There's going to be more than one way to address our "game over" bug, and that shouldn't surprise you by now. We're going to approach this problem with the forever block.

Let's see what we can do by performing the following steps:

  1. First, detach the first wait until () block from the script and add the forever block in its place.
  2. Add two if () then blocks to the forever block because we will evaluate two unique values.
  3. The first if () then block should evaluate the y position < y position of (paddle) statement.
  4. Add the change (Lives) by (-1) block to the first if () then block we just added.
  5. Make the second if () then block evaluate lives = 0.
  6. Add the stop (all) block to the second if () then block we just added.
  7. Play the game and allow the ball to miss the paddle, and then watch your lives quickly drop to zero. Now, we've found another bug. The following is a screenshot of our current script:
    Time for action – checking for game over
  8. This bug can be overcome...
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