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 collision detection


The problem in this game is that sometimes it will report collisions of objects that are still in action, basically, when they pass by each other. For this, we check if the ID of the object's parent is bigger than the one of the second object's parent. If yes, the second object will start a transition.

  1. 1. Inside the method OnObjectCollision, check if the collision group is equal to g.grpCircle.

    Method OnObjectCollision:Int(obj:ftObject, obj2:ftObject)
    If obj.collGroup = g.grpCircle Then
    
  2. 2. Now, check whether the ID of the first parent obj is bigger than the second one and also that the second parent ID is positive. Negative ones are still in transition.

    If (obj.GetParent().GetID() > obj2.GetParent().GetID()) And (obj2.GetParent().GetID() >= 0) Then
    
  3. 3. Raise the game score.

    g.score += 1
    
  4. 4. Check whether the second parent object is in transition. If not, then start a rotation transition by relative 90 degrees to its current angle and...