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 — acting on object update events


In this method, we will check whether certain keys are hit on the keyboard. This is to turn the plane or change its speed. Also, we make sure that the player can shoot bullets himself and spawn some smoke if the planes are hit. And finally, we make the enemy plane follow the player.

  1. 1. Inside the OnObjectUpdate method, check whether the object is equal to g.player.

    Method OnObjectUpdate:Int(obj:ftObject)
    If obj = g.player Then
    
  2. 2. If yes, set its basic speed to 8.0.

    obj.SetSpeed(8.0)
    
  3. 3. Check whether the LEFT arrow key is held down on the keyboard. If yes, turn the player plane to the left.

    If KeyDown(KEY_LEFT) Then obj.SetAngle(-g.eng.GetDeltaTime()/16.0,True)
    
  4. 4. Check whether the RIGHT arrow key is held down. If yes, then turn the player plane to the right.

    If KeyDown(KEY_RIGHT) Then obj.SetAngle(g.eng.GetDeltaTime()/16.0,True)
    
  5. 5. If the UP arrow key is held down, set the object's speed to 10.

    If KeyDown(KEY_UP) Then obj.SetSpeed(10.0)
    
  6. 6. Check...