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Introduction 1 Adventure 1 Diving into Python 23 What Is Programming? 24 Opening IDLE 25 Returning to Your First Python Program 26 It Isn''t Working--Grrr! 28 Using a File Editor 30 Asking Questions with Variables 33 A Bit About Variables 35 Using Variables for a Fill-in-the-Blanks Story 37 Making the Program Make Decisions: Conditionals 39 Using if Statements 39 Nested if Statements 41 Creating an Imaginary Vending Machine 43 Repeating Code with Loops 45 Using while Loops 45 Infinite while Loops 47 Praise Generator 48 A Bigger Adventure: Spaceship Control Console 50 Set-Up and Password 50 Using the Console to Do Things 52 Adventure 2 Drawing with Turtle Graphics 57 Getting Started with Turtle 57 Using Variables to Change Angles and Lengths 61 Using Addition to Draw a Spiral 64 Saving Some Space with Loops 65 A Shape with 360 Sides: Drawing a Circle 67 Controlling the Number of Sides Using for Loops 68 Changing the Fill Colour in a Shape 71 Creating Functions to Reuse Your Code 72 Shape Presets 75 Adding Randomly Generated Pictures 76 Adventure 3 Windows, Buttons, and Other GUI Stuff 83 Creating Buttons 84 Changing the Button Text on Click 87 Counting Clicks 88 Creating Text Boxes 90 Writing It Backwards 92 Adding Passwords 93 Building a Random Sentence Generator 96 Programming a Guessing Game 99 Adventure 4 More GUI Elements with Tkinter 105 Creating Sliders 105 How Colours Work on Computers and as Hexadecimal Values 109 Changing the Canvas Colour 111 Making the Colour Picker 113 Adding a Text Box 116 Creating a Click Speed Game 117 Adventure 5 Drawing Shapes with PyGame 123 Installing PyGame 123 My First PyGame 124 Creating Rectangles 127 Creating a Rectangle 127 A Rainbow of Rectangles 128 Colour Grid 131 Creating Ellipses 133 Wobbling Circle 133 Saving Your Images 135 Saving a Single Image 135 Saving a Series of Images 136 Adventure 6 Adding Keyboard Input with PyGame 139 Using Keyboard Input 140 Other Keys You Can Use 142 Creating the Game 142 Introducing Full Movement 146 Moving the Player Offscreen 148 Adding the Ball 150 Creating Collisions 152 Goal! 154 Adding a Time Limit 157 Adventure 7 Creative Ways to Use a Mouse with PyGame 161 Getting the Mouse Position 161 Making a Button 163 Moving Target 166 Exploding Clicks 169 Making a Mesh 172 Creating Mouse Trails 175 Adventure 8 Using Images with PyGame 181 Loading an Image 181 Layering Images 184 Randomly Layering Images 186 Adding a Moustache to a Photograph 188 Making Sprites 191 Creating a Walking Animation 191 Walking in All Directions 195 Teleportation 197 Adventure 9 Using Sounds and Music with PyGame 203 Playing Sounds 203 Creating a Noise Loop 205 Making Keyboard Sound Effects 207 Using Music with Python 210 Playing Music 210 Adding Volume Tremolo 212 Making a Music Player 215 Adding Sounds and Music to a Game 218 Adventure 10 Your Really Big Adventure 223 Writing the Program for the Game 224 Setting Up the Files 224 Making the Game 225 Walls 226 Doors, Collisions and Coins 229 Setting Up the Window and Variables 231 Adding the Game Loop 234 Character Controls and Animations 234 Player Collisions and Collecting Coins 237 Displaying Points and Updating the Window 237 Playing the Game 238 Debugging the Game 239 Summary 240 Appendix A Installing and Downloading the Proper Files 243 Installing PyGame 243 Windows 8 243 Windows 7 245 Mac 245 Linux (Ubuntu) 247 Raspberry Pi 248 Downloading the Files for Adventures 8, 9 and 10 248 Windows 8 248 Windows 7 249 Mac 249 Linux (Ubuntu) 250 Raspberry Pi 250 Glossary 251 Index 257