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 – moving the character


Eggs will be falling in all different areas of the screen from the sky. Let's prepare our main character to move through all potential areas on te screen.

  1. Set up a new local function called moveChar() with an event parameter.

        local moveChar = function(event)
  2. Add in the accelerometer movement for the character.

          charObject.x = display.contentCenterX - 
            (display.contentCenterX * (event.yGravity * 3))
  3. Create character boundaries where they moves on the screen. This enables the character to stay within the game screen and not go past the offscreen boundaries.

          if((charObject.x - charObject.width * 0.5) < 0) then
            charObject.x = charObject.width * 0.5
          elseif((charObject.x + charObject.width * 0.5) >
                 display.contentWidth) then
            charObject.x = display.contentWidth - charObject.width * 
              0.5
          end
        end

What just happened?

To make the accelerometer movement work with a device, we have to...