Appendix A. Pop Quiz Answers

Chapter 1 – Getting Started with Corona SDK

Pop quiz – understanding Corona

Q1 What is true about using the Corona simulator?	1
Q2 How many iOS devices can you use for development in the iPhone Developer Program?	4
Q3 What does the version code have to be when building for Android in Corona SDK?	2

Chapter 2 – Lua Crash Course and the Corona Framework

Pop quiz – basics of Lua

Q1 Which of the following are values?	4
Q2 Which relational operator is false?	3
Q3 What is the correct way to scale an object in the x direction?	4

Chapter 3 – Building Our First Game – Breakout

Pop quiz – building a game

Q1 When adding the physics engine in your code, which functions are valid to add to your application?	4
Q2 Which is correct when adding an event listener?	4
Q3 What is the correct way to have the following display object transition to x = 300, y = 150, and have the alpha changed to 0.5, in 2 seconds?	1

Chapter 4 – Game Controls

Pop quiz – working with game controls

Q1 How do you properly remove a display object from the stage?	3
Q2 What is the correct way to make the following display object into a physics object? local ball = display.newImage("ball.png")	3
Q3 What best represents what "began" means in the following function? local function onCollision( event ) if event.phase == "began" and event.object1.myName == "Box 1" then print( "Collision made." ) end end	4

Chapter 5 – Animating Our Game

Pop quiz – animating graphics

Q1 What is the proper way to pause the animation of an image sheet?	1
Q2 How do you make an animation sequence loop forever?	3
Q3 How do you create a new image sheet?	4

Chapter 6 – Playing Sounds and Music

Pop quiz – all about audio

Q1 What is the proper way of clearing audio files from the memory?	3
Q2 How many channels of audio can be played simultaneously in an application?	4
Q3 How do you make your audio file loop infinitely?	1

Chapter 7 – Physics – Falling Objects

Pop quiz – animating the graphics

Q1 What retrieves or sets the text string of a text object?	1
Q2 What function converts any argument into a string?	3
Q3 What body type is affected by gravity and collisions with the other body types?	1

Chapter 8 – Operation Composer

Pop quiz – game transitions and scenes

Q1 What function do you call to change scenes with Composer?	2
Q2 What function converts any argument into a number or nil?	1
Q3 How do you pause a timer?	3
Q4. How do you resume a timer?	2

Chapter 9 – Handling Multiple Devices and Networking Your Apps

Pop quiz – handling social networks

Q1 What is the specific API that scales down high-resolution sprite sheets?	2
Q2 What are the publishing permissions called that allow posting on a user's wall on Facebook?	2
Q3 Which parameter(s) is required for facebook.login()?	4

Chapter 10 – Optimizing, Testing, and Shipping Your Games

Pop quiz – publishing applications

Q1 When creating an iOS Distribution Provisioning file, what distribution method do you need to use?	2
Q2 Where do you refer to for the status of the submitted iOS applications?	1
Q3 What is required to build an app for the Google Play Store?	4

Chapter 11 – Implementing In-App Purchases

Pop quiz – all about In-App Purchases

Q1 What are nonconsumable purchases?	1
Q2 What is true about testing In-App Purchases?	3
Q3 What type of Provisioning Profile must be used to test In-App Purchases?	2