Scratch 2.0 Beginner's Guide: Second Edition

Book Image

Scratch 2.0 Beginner's Guide: Second Edition

By : Michael Badger

Book Image

Scratch 2.0 Beginner's Guide: Second Edition

By: Michael Badger

Overview of this book

Scratch 2.0 Beginner's Guide Second Edition

Scratch 2.0 Beginner's Guide Second Edition

Credits

About the Author

About the Author

About the Reviewers

About the Reviewers

www.PacktPub.com

www.PacktPub.com

Preface

Free Chapter

Welcome to Scratch 2.0

Welcome to Scratch 2.0

Finding a project for you

Using Scratch 2.0

A Quick Start Guide to Scratch

A Quick Start Guide to Scratch

Joining the Scratch community

Time for action – creating an account on the Scratch website

Time for action – understanding the key features of your account

Taking our first steps in Scratch

Time for action – moving the cat across the stage

Time for action – animating a walking motion with the cat

Time for action – saving our work

Introducing forever loops

Time for action – setting the cat in motion, forever

Time for action – flipping the cat right-side up

Adding sprites to the project

Time for action – adding a second sprite and script

Reviewing a video-sensing project

Time for action – reviewing pop the balloon - video starter

Creating an Animated Birthday Card

Creating an Animated Birthday Card

Introducing the paint editor

Time for action – painting a happy birthday sprite

Time for action – drawing a vector image

Time for action – using the fill with color tool to paint the stage

Adding gradients

Time for action – applying a gradient

Time for action – adding more sprites to address the card

Initializing a sprite's starting values

Time for action – hiding all sprites when the flag is clicked

Time for action – displaying happy birthday

Specifying memorable names and comments

Time for action – renaming sprites

Inserting comments into our code

Time for action – adding comments to a script

Transforming sprites with graphical effects

Time for action – transforming sprites

Time for action – turning m in a circle

Time for action – making a sprite fade in with the ghost effect

Creating a Scratch Story Book

Creating a Scratch Story Book

Designing the outline of a barnyard joke book

Time for action – designing a clickable table of contents

Time for action – adding pages to the book

Time for action – adding a sprite to the Backpack

Building a joke with say blocks and sounds

Time for action – making a horse talk with the say block

Time for action – synchronizing and animating the horse

Time for action – importing a horse sound

Positioning a sprite by its coordinates

Time for action – moving the dog based on x and y coordinates

Time for action – duplicating, flipping, and switching a sprite's costume

Composing custom sound effects

Time for action – creating drum sound effects

Time for action – integrating the dog's joke sequence

Navigating the story and coordinating scenes

Time for action – hiding the table of contents

Time for action – displaying the dog scene

Time for action – navigating back to the table of contents

Creating a Multimedia Slideshow

Creating a Multimedia Slideshow

Importing photos as backdrops

Time for action – importing photos from files

Working with images

Adding slideshow controls to display images

Time for action – flipping through the photos

Playing and recording sounds

Time for action – adding a sound from Scratch's library

Time for action – recording sounds in the sound editor

Time for action – editing a recorded sound

Time for action – appending a sound

Time for action – adding sound effects to recordings

Using x and y coordinates to find the position of the mouse's pointer

Time for action – using mouse location to hide arrows

Time for action – providing user instructions

Displaying a project in presentation mode

Time for action – presenting a fullscreen slideshow

Making an Arcade Game – Breakout (Part I)

Making an Arcade Game – Breakout (Part I)

Learning about the Breakout game

Time for action – importing and playing the Pong starter project

Time for action – adding the left and right arrow controls

Time for action – determining if the ball is below the paddle

Time for action – adjusting the center of a sprite costume

Cloning to create identical sprites

Time for action – drawing bricks

Time for action – cloning bricks

Time for action – breaking bricks when I start as a clone

Ricocheting with the point in direction block

Time for action – changing a sprite's direction

Time for action – setting the starting position and the direction

Time for action – ricocheting off bricks

Defining a variable to keep score

Time for action – adding a score variable

Programming a Challenging Gameplay – Breakout (Part II)

Programming a Challenging Gameplay – Breakout (Part II)

Implementing lives

Time for action – adding a variable to track lives

Time for action – checking for game over

Adding more bricks to the level with a custom block

Time for action – creating a second brick

Time for action – drawing rows of bricks with custom blocks

Time for action – coordinating the ball play

Increasing ball speed and difficulty

Time for action – increasing ball speed

Time for action – decreasing the paddle size based on the clones' costume

Time for action – detecting when we clear the level

Keeping the score using cloud variables

Time for action – keeping a global scoreboard

Chatting with a Fortune Teller

Chatting with a Fortune Teller

Creating, importing, and exporting lists

Time for action – creating lists to store multiple values

Time for action – importing fortunes to a list

Prompting the player for a question

Time for action – asking a question

Time for action – validating the seeker's question

Time for action – selecting a random fortune

Time for action – counting our fortunes with mod

Time for action – creating a custom say fortune block

Time for action – ensuring grammatically correct questions

Creating a keyword scanner

Time for action – scanning a text string to build a list of words

Turning Geometric Patterns into Art Using the Pen Tool

Turning Geometric Patterns into Art Using the Pen Tool

Drawing basic shapes

Time for action – drawing our first square

Time for action – building on the square

Time for action – enabling the user to create custom shapes

Time for action – turning triangles into pinwheels

Time for action – creating a custom shapes procedure

Time for action – plotting x,y coordinates to draw a square

Understanding and using color

Time for action – coloring our shapes

Time for action – finding a color picker workaround

Time for action – creating a color palette

Time for action – limiting color values with a slider

Creating asymmetrical patterns

Time for action – creating an explosion

Turning straight lines into string art

Time for action – animating a radar screen

Time for action – breaking out of the circle

Connecting a PicoBoard to Scratch 1.4

Connecting a PicoBoard to Scratch 1.4

Using Scratch 1.4, the PicoBoard, and Raspberry Pi

Purchasing the PicoBoard

Time for action – enabling and testing the PicoBoard support in Scratch 1.4

Animating webcam images by detecting sound

Time for action – creating a talking head

Measuring resistance

Time for action – recording the resistance of a thermistor over time

Time for action – charting our measurements

Time for action – revising the graph

Pop Quiz Answers

Pop Quiz Answers

Chapter 2, A Quick Start Guide to Scratch

Chapter 3, Creating an Animated Birthday Card

Chapter 4, Creating a Scratch Story Book

Chapter 5, Creating a Multimedia Slideshow

Chapter 6, Making an Arcade Game – Breakout (Part I)

Chapter 9, Turning Geometric Patterns into Art Using the Pen Tool

Appendix A, Connecting a PicoBoard to Scratch 1.4

Index

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Initializing a sprite's starting values

As we animate the card, we need to start thinking about how the card looks when we give it to somebody. In other words, we need to know what happens when that person clicks on the green flag to view the card.