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

Images


Many art assets used in Corona applications are sets of images. You will notice that bitmap image objects are types of display objects.

Loading an image

By using display.newImage( filename [, baseDirectory] [, left, top] ), an image object is returned. The image data is loaded from a filename you specified to your image and looks in the system.ResourceDirectory for that file. The acceptable types of image files that are supported are .png (PNG-24 or higher only) and .jpg files. Avoid high .jpg compression as it may take longer to load on a device. .png files have better quality over .jpg files and are used to display transparent images. .jpg files do not save transparent images.

Image autoscaling

The default behavior of display.newImage() is to autoscale large images. This is to conserve texture memory. However, there are times when you do not want to have images autoscaled and there is an optional Boolean flag in the parameter list to control this manually.

To override autoscaling and...