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 — detailing the OnUpdate method


The OnUpdate method will be called in the amount you have set the update rate to. The base script sets it to 60 times. Follow the given steps:

  1. 1. Start a SELECT statement with gameMode as a parameter.

    Method OnUpdate:Int()
    Local d:Float = Float(eng.CalcDeltaTime())/60.0
    If isSuspended = False Then
    Select gameMode
    
  2. 2. First, check if gameMode is equal to gmPlay:

    Case gmPlay
    eng.Update(d)
    
  3. 3. Start a collision check for the game layer:

    eng.CollisionCheck(layerGame)
    
  4. 4. Next, if there is a TouchHit method, do a touch check for the background layer:

    If TouchHit(0) Then
    eng.TouchCheck(layerBackGround)
    Endif
    
  5. 5. Set the text property of the txtScore object to the current score value:

    txtScore.SetText("Score: "+score)
    
  6. 6. Now, check whether the game mode is set to gmMenu:

    Case gmMenu
    
  7. 7. If there is a touch hit, perform a touch check for the title layer:

    If TouchHit(0) Then
    eng.TouchCheck(layerTitle)
    Endif
    
  8. 8. If the game mode is set to gmGameOver, update the...