Book Image

Monkey Game Development: Beginner's Guide

By : Michael Hartlef
Book Image

Monkey Game Development: Beginner's Guide

By: Michael Hartlef

Overview of this book

Monkey is a programming language and toolset that allows its user to develop modern 2D games easily for mobile and other platforms like iOS, Android, HTML5, FLASH, OSX, Windows and XNA. With Monkey you can create best selling games in a matter of weeks, instead of months.Monkey Game Development Beginner's Guide provides easy-to-follow step by step instructions on how to create eight different 2D games and how to deploy them to various platforms and markets. Learning about the structure of Monkey and how everything works together you will quickly create eight classical games and publish them to the modern app markets. Throughout the book you will learn important game development techniques like collision detection, handling player input with mouse, keyboard or touch events and creating challenging computer AI. The author explains how to emit particle effects, play sound and music files, use sprite sheets, load or save high-score tables and handle different device resolutions. Finally you will learn how to monetize your games so you can generate revenue.
Table of Contents (16 chapters)
Monkey Game Development
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
3
Game #2, Rocket Commander
4
Game #3, CometCrusher
5
Game #4, Chain Reaction
6
Game #5, Balls Out!
8
Game #7, Air Dogs 1942
9
Game #8, Treasure Chest

Time for action — finalizing the OnUpdate method


The OnUpdate event is the place to update all game objects and control the flow of the game in general. You do everything in the method line-by-line and with hundreds of statements. However, we took the approach with building a lot of helper methods, which will now be called inside this method:

  1. 1. Inside the OnUpdate method, store the result of a call to the method GetDeltaTime in the local variable d.

    Method OnUpdate:Int()
    Local d:Int = GetDeltaTime()
    
  2. 2. Check with an If statement, whether the field isSuspended is FALSE.

    If isSuspended = False Then
    
  3. 3. Add a Select statement with the field gameMode. Then, insert the Case statement for the constant gmPlay.

    Select gameMode
    Case gmPlay
    
  4. 4. Now, call the Update method of your engine instance. As a speed parameter, we use the local d variable divided by 60. The speed parameter is a FLOAT value so you need to cast d to FLOAT.

    eng.Update(Float(d)/60.0)
    
  5. 5. Now, check whether a TouchHit for the first...