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 — creating the explosion


The method to emit explosion particles works in a similar way to the one that emits smoke.

  1. 1. Insert a method called SpawnExplosion in the game class. The parameters are the x and y positions, and the amount of particles to create.

    Method SpawnExplosion:Int(x:Float, y:Float, amount:Int)
    
  2. 2. Set the default layer to the game layer.

    eng.SetDefaultLayer(layerGame)
    
  3. 3. Start a FOR loop for the local i variable ranging from 1 to the amount parameter of the method.

    For Local i:Int = 1 To amount
    
  4. 4. Determine a random x offset that is used when an image object for the explosion particle is created.

    Local xoff:Float = Int(Rnd(0,3))
    
  5. 5. Create a local object for the particle image. It will be placed at the coordinates given to the method.

    Local obj:=eng.CreateImage(atlas,144+xoff*16.0,80,16,16, x,y)
    
  6. 6. Now, determine a random vector that will be 10 to 40 pixels and at a random angle around the given coordinates of the method.

    Local vec:Float[] = obj.GetVector(Rnd(10...