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Best Resources In iOS Development – July 25th 2011

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Another week gone by, and welcome to this listing of resources shared in the last week in order of popularity.

This week once again yet another beta was released of iOS 5 for us to install.  The release date is slowly creeping up.

Some great resources were posted on the site including open source libraries for interface improvement, free game graphic sources, and some excellent tutorials.

If you would like us to submit a resource you can do so on the submit page.

Open Source: Drop In UILabel Replacement For Beautiful Text Easily – A library utilizing NSAttributedString, and core text allowing you to quickly create labels with styled text.

Design: Free Game Graphic Sets Made Specifically For iOS Games – Some great looking sets of game art styled specifically or the iPhone and iPad complete with backgrounds, characters and game objects.

Tutorial: Easy Game Controls In Cocos2D With SneakyInput – Describes how to use the SneakyInput library in your Cocos2D game so you can quickly add a virtual joystick.

Tutorial: Using And Building OpenCV (Open Computer Vision) On iOS Devices – Tutorial along with a build script for those looking to use the OpenCV library in their apps.

Open Source: Behavioral Driven Development Testing Framework – A framework made with Objective-C and specifically for Objective-C apps enabling BDD testing.

Tutorial: Objective-C Blocks (Closures) For Beginners – The basics of using Objective-C blocks including an overview of using them in concurrency programming.

Tutorial: Building Complete Games With SpriteHelper And LevelHelper – A couple of tutorials on the usage of these excellent tools to quickly build games with Cocos2D and Corona.

Open Source: Real-Time Congress App Phonegap And Native Source Code – The source code to both a Phonegap and native app that displays real time data.

Tutorial: Texturing 3D Objects In OpenGL ES 2.0 – An excellent step-by-step tutorials for beginners to OpenGL ES demonstrating how to Texture 3D objects.

Design: Creating An App with HTML/CSS And Sencha Touch – A tutorial on how to design iPhone style interfaces with HTML/CSS and Sencha Touch.

Thanks for reading, please bookmark and share this post!


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Tutorial: Texturing 3D Objects In OpenGL ES 2.0

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OpenGL ES is a topic that I’ve posted about many times on this site, and I’ve been trying to keep a categorized list of OpenGL ES tutorials up to date with every OpenGL ES tutorial I’ve seen.  There have not been too many OpenGL ES 2.0 tutorials to date that go beyond the absolute basics.

Previously I mentioned a good series on OpenGL ES 2.0 that gave a great overview on beginner through advanced topics with some sample code.  I also mentioned a great hands on beginners OpenGL ES 2.0 tutorial from Ray Wenderlich, the creator of the Space Game Starter Kit and co-author of the Learning Cocos2D book,.

Ray has continued on with his tutorial series, and added another tutorial explaining how to texture objects in OpenGL ES 2.0 on iOS devices.  Texturing may sound like something simple, but the process of loading in the textures, and extracting the data from memory makes things somewhat stick on the iPhone and iPad.

You can find the tutorial here:
OpenGL ES 2.0 for iPhone Tutorial Part 2: Textures

Definitely some very handy snippets of code if you ever need to do your own texturing in OpenGL ES 2.0.

Added To The: Categorized OpenGL ES Tutorial Collection


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Best Resources In iOS Development – July 18th 2011

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Another excellent week to be an iOS developer, and some big news in the department of iOS game development with the release of  Cocos2D V1.0.0 and the opening of the Moai SDK beta to everyone.  Also some great open source libraries and tutorials were shared.

If you have written a tutorial, open source library or tool that you would like to share you can submit the url here.

I’ve been contacted a number of times about advertising on this site so I decided to add support for BuySellAds, and added a section for small button ads.  If interested you can check out the advertising page here.

Here are the resources from the last week in order of popularity:

Open Source: Easy Multistroke and Single Stroke Complex Gesture Recognition On iOS – A couple of great libraries if you are looking to quickly implement complex gesture within your app.

Open Source: iCade Library For Easy Integration In iOS Games – Library that allows you to easily support the iCade classic arcade box/controller for iPad.  Makes a good example if you are trying to support a specific bluetooth interfacing device.

Tutorial: Manipulating Images With Touch Gestures – A tutorial with sample code demonstrating how to add touch features for image manipulation.

Tutorial: iOS Map Kit For Beginners Guide – A getting started tutorial for those beginning with the iOS map kit including a tutorial on displaying data from XML locations on a map without using any libraries outside of those included with  the iOS SDK.

Open Source: Active Record For Core Data Library – A great open source project modeled after Ruby On Rail’s ActiveRecord for more straightforward data retrieval.

News: Cocos2D Game Engine v1.0.0 Released – News about the highly popular Cocos2D game engine finally reaching the v1.0.0 release.

Tutorial: iOS Multithreading With Grand Central Dispatch (GCD) Basics – An excellent step by step guide beginning with the basics on multithreading with iOS ‘s Grand Central Dispatch.

News: Moai SDK Game Development Kit Made Available To All – The lua based open source Moai SDK has now opened the beta for anyone to download and use.

Tutorial: Calculator App Style Glossy Buttons With Core Graphics – An explanation of the technique used to create buttons just like the calculator applications that come with iOS devices.

Tutorial: How To Use The iOS Keychain To Store Names And Passwords – A guide on using the iOS keychain in order to securely store usernames and passwords.

Thanks for reading, please bookmark and share this post!


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Open Source: iCade Library For Easy Integration In iOS Games

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The iPad has created quite a market for bluetooth peripherals and one of the coolest has to be the iCade.

The iCade is a mini arcade cabinet which you can fit your iPad within, and comes with a classic arcade style joystick, and buttons.  The iCade uses bluetooth so it can actually work with other tablets or even with your desktop.  I’ve almost talked myself into getting one by writing this article.

If you are unfamiliar with the iCade you can check out this video:

A pretty cool device, and at the cost of $99 you can imagine those using it are pretty hardcore iPad classic game enthusiasts.

Stuart Carnie has created a library for easy integration in iOS games, and includes a sample app.

You can find the project on Github here:
https://github.com/scarnie/iCade-iOS

You can check out the iCade on ThinkGeek here:
 iCade – Arcade Game Cabinet

The peripheral seems to have gained quite a following, and being able to advertise your game with iCade support might drive up it’s popularity.  Easy to do with this open source library.

[via Alex Curylo]

 


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Open Source: Easy Multistroke and Single Stroke Complex Gesture Recognition On iOS

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If you’ve ever wondered how to code gesture recognition for complex shapes I’ve come across a couple of open source libraries that should be a great deal of help.  This goes well beyond finger swiping.

This library is based on the $1 gesture recognizer which I remember being discussed quite a bit a few years back because not only did it run efficiently,  but allowed you define the templates to recognize complex shapes very easily.   The $1 gesture recognizer only recognizes 1 single stroke from the user.  The $1 gesture recognizer was later expanded on to become the $N multistroke gesture recognizer.

Brit Gardner has taken the $N gesture recognizer and created an Objective-C implementation of the code.

You can read about complex gesture recognition, and why Brit decided to use the $N gesture recognizer on his site in these posts:

Complex Gesture Recognition in iOS – Part 1: The Research
Complex Gesture Recognition in iOS – Part 2: The Implementation

You can find Brit’s Github for the Objective-C $N gesture recognizer here:

https://github.com/britg/MultistrokeGestureRecognizer-iOS

Adam Preble has created an implementation of the $1 gesture recognizer which can be found here:

https://github.com/preble/GLGestureRecognizer

You can try out the javascript versions, check out the full pseudocode, or download other versions of the gesture recognizers from the University of Washington here:

The $1 Gesture Recognizer
The $N Multistroke Gesture Recognizer

I’ve received e-mails a couple of times over the years asking about how some drawing games were created on the iPhone.  If you are looking to make that kind of game this should help give you a head start.


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