This isn't EXACTLY what you are looking for, but the section on Isometry, though it is ActionScript3, may prove to be helpful in figuring out your coordinate issues.
The book "Learn Cocos2d Game Development with IOS 5" by Steffen Itterheim and Andreas Löw has an excellent chapter on Isometric Tile Games (Chapter 11 I believe). It's worth checking out in my opinion.
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这并不完全是您正在寻找的内容，但是有关 Isometry 的部分虽然是 ActionScript3，但可能有助于解决您的坐标问题。
http://www.kirupa.com/developer/actionscript/
只需向下滚动到该部分正如我之前指出的，关于“等距”。祝你好运！
This isn't EXACTLY what you are looking for, but the section on Isometry, though it is ActionScript3, may prove to be helpful in figuring out your coordinate issues.
http://www.kirupa.com/developer/actionscript/
Just scroll down to the section on 'Isometry', as I previously noted. Good luck!
Steffen Itterheim 和 Andreas Löw 所著的《Learn Cocos2d Game Development with IOS 5》一书有关于等距瓷砖游戏的精彩章节（我认为是第 11 章）。我认为值得一看。
另一个使用 cocos2d 的开源 2D 等距游戏，您可能会觉得有用：
https://github.com/lozarcher/KnightFight
The book "Learn Cocos2d Game Development with IOS 5" by Steffen Itterheim and Andreas Löw has an excellent chapter on Isometric Tile Games (Chapter 11 I believe). It's worth checking out in my opinion.
Another open source 2D isometric game using cocos2d that you might find useful:
https://github.com/lozarcher/KnightFight