Using UIWebView is an efficient way to make an About screen, Help screen, or other sort of hard to layout. Consider how easy it is to lay out your ‘page’ in html, instead of having to build it using Interface Builder. You can even use JavaScript and add interactivity if you want. You can even […]

ARC is a good idea; however it may cause issues when using old libraries or if you have some code which use it and some which don’t. You might also accidentally clicked on it when creating the project and decide, no, I don’t really want it. ARC is not a bad idea, but it will […]

iOS 5 introduces something interesting, which is some sort of Facial Detection capability. Right now it only detects the position of eyes and mouth but expect it to have more in future iOS versions. First, the requirements: Compile with iOS SDK version 5 or later You need to include CoreImage.framework into your project. Your build […]

Packt Publishing has notified me that they released a cococ2d programming book. Here’s their press announcement: “Packt is pleased to announce Cocos2d for iPhone 0.99 Beginner’s Guide, a new book which helps in building fun and exciting iPhone games using the cocos2d for iPhone framework. Written by Pablo Ruiz, this book will help programmers make […]

One of the challenges faced when developing applicationf for the iPhone and iPad is the memory limitation.  These devices understandably have much less memory than a computer, so careful memory consumption is essential. cocos2d version introduces several improvements, and one of them is the ability to select the color-depth for sprites.  This is a good […]

If you are getting this kind of error when compiling with Cocos2d for iPhone, then see the solution below. Line Location Tool:0: collect2: ld returned 1 exit status Line Location Tool:0: symbol(s) not found Line Location Tool:0: -[Texture2D(PVRTC) initWithPVRTCData:level:bpp:hasAlpha:length:] in Texture2D.o Line Location Tool:0: -[Texture2D initWithData:pixelFormat:pixelsWide:pixelsHigh:contentSize:] in Texture2D.o Line Location Tool:0: -[EAGLView _createSurface] in EAGLView.o […]

Here are some issues that may happen when upgrading from Cocos2d version 0.71 to 073 (make sure to back-up your project before making changes as these are based on experience and may not work for you): The screen might turn blank (depending on how you configure your application). Possible solution: Remove MainWindow.xib from the project. […]

This is some examples for the topic discussed in https://permadi.com/blog/2010/03/cocos2d-color-depth-and-memory-optimizations/ kTexture2DPixelFormat_RGBA4444 Notice the severe banding. kTexture2DPixelFormat_RGBA8888 kTexture2DPixelFormat_RGBA4444 kTexture2DPixelFormat_RGBA8888 kTexture2DPixelFormat_RGBA4444 kTexture2DPixelFormat_RGBA8888

There have been some questions about whether you need to be a paid developer to get the SDK. The answer is no, at least at the time I wrote this, there’s still a non-fee option to register.  Refere to this post, https://permadi.com/blog/?p=17, for more information. Note: Registering as a Free Developer enables you to download […]

Xcode Tips
June 9, 2009

More tips can be found in this other post: https://www.permadi.com/blog/2009/05/apple-xcode-shortcuts-and-tips/. Creating Classes Diagram There’s a handy feature to create class diagrams in Xcode, using Class Model feature.  To create a diagram for the whole project, select the project name in the Group & Files panel. Then select Menu->Design->Quick Model->Class Model.  You will be asked to […]

Using iPhone SDK 2.1.   Background User Preferences are data and settings that are saved by your application.  The iPhone OS has a mechanism that enables an application to “associate” its settings with the default iPhone user interface.  You can access applications settings by selecting the Settings icon in the main iPhone screen.  Try it […]

This tutorial assumes basic familiarity with Cocos2d on iPhone.  For Cocos2d introduction, please see this install guide, and Hello World guide.  This tutorial covers Cocos2d version 0.7.1. Introduction Transitions are effects such as: wipe, fade, zoom, and split.  You can use transitions to switch between Cocos2d Scene objects.  Scene class is derived from CocosNode and […]

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