Scratch 3 Programming Playground

Cover
Titlepage
PRAISE FOR SCRATCH PROGRAMMING PLAYGROUND 
Copyright
Dedication
About the Author
About the Technical Reviewer
Acknowledgments
Introduction
    Who This Book Is For
    About This Book
    How to Use This Book
    Online Resources
    Errata and Updates
Chapter 1: Getting Started with Scratch
    Running Scratch
    Scratch Desktop: The Offline Editor
    The Scratch Editor and Sprites
    The Paint Editor
    Working with Code Blocks
        Adding Blocks
        Deleting Blocks
    Running Programs
    Showing Off Your Programs
    Getting Help
        The Tutorials Window
        The See Inside Button
    Summary
Chapter 2: Rainbow Lines . . . in Space!
    Sketch Out the Design
    A. Create the Space Backdrop
        1. Clean Up and Set the Stage
    B. Create Three Bouncing Dots
        2. Paint the Dot 
        3. Add Code for the Dot 1 Sprite
        4. Duplicate the Dot 1 Sprite
    C. Draw the Rainbow Lines
        5. Add the Code for the Drawing Dot Sprite
    The Complete Program
    Turbo Mode
    Summary
Chapter 3: Maze Runner
    Sketch Out the Design
    A. Make the Cat Walk Around
        1. Add Movement Code to the Player Sprite
        2. Duplicate the Movement Code for the Cat Sprite
    B. Make the Maze Levels
        3. Download the Maze Images
        4. Change the Backdrop
        5. Start at the First Maze
    C. Keep the Cat from Walking Through Walls
        6. Check Whether the Cat Is Touching the Walls
    D. Make a Goal at the End of the Maze
        7. Create the Apple Sprite
        8. Detect When the Player Reaches the Apple
        9. Add the Broadcast Handling Code to the Maze Sprite
    The Complete Program
    Version 2.0: Two-Player Mode
        Duplicate the Apple Sprite
        Modify the Apple2 Sprite’s Code
        Duplicate the Orange Cat Sprite
        Modify the Code for the Blue Cat Sprite
        Go Back to the Starting Position
    Cheat Mode: Walk Through Walls
        Add the Walk-Through-Walls Code to Orange Cat
        Add the Walk-Through-Walls Code to Blue Cat
    Summary
Chapter 4: Shooting Hoops with Gravity
    Sketch Out the Design
    A. Make the Cat Jump and Fall
        1. Add the Gravity Code to the Cat Sprite
        2. Add the Ground-Level Code
        3. Add the Jumping Code to the Cat Sprite
    B. Make the Cat Move Left and Right
        4. Add the Walking Code to the Cat Sprite
    C. Make a Hovering Basketball Hoop
        5. Create the Hoop Sprite
        6. Create the Hitbox Sprite
    D. Make the Cat Shoot Hoops
        7. Create the Basketball Sprite
        8. Add the Code for the Basketball Sprite
        9. Detect Whether a Basket Is Made
        10. Fix the Scoring Bug
    The Complete Program
    Cheat Mode: Freeze the Hoop
    Summary
Chapter 5: A Polished Brick Breaker Game
    Sketch Out the Design
    A. Make a Paddle That Moves Left and Right
        1. Create the Paddle Sprite
    B. Make a Ball That Bounces Off the Walls
        2. Create the Tennis Ball Sprite
    C. Make the Ball Bounce Off the Paddle
        3. Add the Bounce Code to the Tennis Ball Sprite
    D. Make Clones of the Brick
        4. Add the Brick Sprite
        5. Clone the Brick Sprite
    E. Make the Ball Bounce Off Bricks
        6. Add the Bounce Code to the Brick Sprite
    F. Make “You Win” and “Game Over” Messages
        7. Modify the Tennis Ball Sprite’s Code
        8. Create the Game Over Sprite
        9. Create the You Win Sprite
    The Complete Program
    Version 2.0: Polishing Time
        Draw a Cool Backdrop
        Add Music
        Make the Paddle Flash When Hit
        Add an Animated Entrance and Exit to the Bricks
        Add a Sound Effect to the Brick Exit
        Add a Sound Effect to the Tennis Ball
        Add a Trail Behind the Tennis Ball
        Add an Animated Entrance for the Game Over Sprite
        Add an Animated Entrance for the You Win Sprite
    Summary
Chapter 6: Asteroid Breaker . . . in Space!
    Sketch Out the Design
    A. Make a Spaceship That Is Pushed Around
        1. Create the Spaceship Sprite
    B. Make the Spaceship Wrap Around the Edges
        2. Add the Wrap-Around Code to the Spaceship Sprite
        3. Add the Random-Push Code to the Spaceship Sprite
    C. Aim with the Mouse and Fire with the Spacebar
        4. Create the Energy Blast Sprite
    D. Make Asteroids That Float Around
        5. Create the Asteroid Sprite
    E. Make Asteroids Split in Two When Hit
        6. Add the Asteroid’s Splitting Code
        7. Add the Asteroid Blasted Message Code to the Energy Blast Sprite
    F. Keep Score and Make a Timer
        8. Create the Out of Time Sprite
    G. Make the Spaceship Explode If It Is Hit
        9. Upload the Explosion Sprite
        10. Add the Code for the Explosion Sprite
        11. Add the Explode Code to the Spaceship Sprite
    Version 2.0: Limited Ammo
    Cheat Mode: Starburst Bomb
    Summary
Chapter 7: Making an Advanced Platformer
    Sketch Out the Design
    A. Create Gravity, Falling, and Landing
        1. Create the Ground Sprite
        2. Add the Gravity and Landing Code
        3. Make the Cat Walk and Wrap Around the Stage
        4. Remove the Ground Lift Delay
    B. Handle Steep Slopes and Walls
        5. Add the Steep Slope Code
    C. Make the Cat Jump High and Low
        6. Add the Jumping Code
    D. Add Ceiling Detection
        7. Add a Low Platform to the Ground Sprite
        8. Add the Ceiling Detection Code
    E. Use a Hitbox for the Cat Sprite
        9. Add a Hitbox Costume to the Cat Sprite
        10. Add the Hitbox Code
    F. Add a Better Walking Animation
        11. Add the New Costumes to the Cat Sprite
        12. Create the Set Correct Costume Block
    G. Create the Level
        13. Download and Add the Stage Backdrop
        14. Create a Hitbox Costume for the Ground Sprite
        15. Add the Ground Sprite’s Code
        16. Add More Wrap-Around Code to the Cat Sprite
    H. Add Crab Enemies and Apples
        17. Add the Apple Sprite and Code
        18. Create the Crab Sprite
        19. Create the Enemy Artificial Intelligence
        20. Add the Time’s Up Sprite
    Summary
Where to Go From Here
Index