Book Image

Corona SDK Mobile Game Development: Beginner's Guide

Book Image

Corona SDK Mobile Game Development: Beginner's Guide

Overview of this book

Corona SDK is the fastest and easiest way to create commercially successful cross platform mobile games. Just ask Robert Nay, a 14 year old who created Bubble Ball - downloaded three million times, famously knocking Angry Birds off the top spot. You don't need to be a programming veteran to create games using Corona. Corona SDK is the number one tool for creating fun, simple blockbuster games. Assuming no experience at all with programming or game development you will learn the basic foundations of Lua and Corona right through to creating several monetized games deployable to Android and Apple stores. You will begin with a crash course in Lua, the programming language underpinning the Corona SDK tool. After downloading and installing Corona and writing some simple code you will dive straight into game development. You will start by creating a simple breakout game with controls optimized for mobile. You will build on this by creating two more games incorporating different features such as falling physics. The book ends with a tutorial on social network integration, implementing in app purchase and most important of all monetizing and shipping your game to the Android and App stores.
Table of Contents (18 chapters)
Corona SDK Mobile Game Development Beginner's Guide
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface

Time for action – adding the egg object


Imagine a world full of falling eggs. It's not entirely too realistic, but in this game, we're creating this element. At least we'll be making sure that the gravity and real-world physics will be applied.

  1. Create a new local function called eggDrop().

        local eggDrop = function()
  2. Add in the egg display object properties.

          local egg = display.newImageRect( "egg.png", 26, 30 )
          egg.x = 240 + mRand( 120 ); egg.y = -100
          egg.isHit = false
          physics.addBody( egg, "dynamic",{ density=eggDensity,
            bounce=0,friction=0.5, shape=eggShape } )
          egg.isFixedRotation = true
          gameGroup:insert( egg )
  3. Add in the postCollision event for the egg display object.

          egg.postCollision = onEggCollision
          egg:addEventListener( "postCollision", egg )
        end

What just happened?

We have set the egg value for x to 240 + mRand( 120 ). The mRand function equals to math.random , which will allow the egg to appear in randomized places in an area...