How to use Box2d without renaming files to .mm ?

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bradparks
Member

Hi there;

I've read that to use C++ in the same file as Objective C objects, you need to change the file extension to .mm instead of .m

I tried it and it worked... but while searching for info about this on the web, I found this post:

http://sseyod.blogspot.com/2009/02/objective-c.html

That basically says you don't have to rename your file, you can either on a file by file basis, or on an entire project basis, force your file to compile as if it were a .mm file by changing a build configuration option....

I tried it on the default cocos2d xcode project, and it failed with lots of errors... I don't see anyone mentioning any problems with .m vs .mm files... Should this work, and is it a good idea?

Posted 2 years ago #
badawe
Member

humm, what is the problem with rename to .mm? and if you have problems to install cocos2d+box2d the last beta come with one template, and here at the forum have many helps to instal box2d with cocos2d on the 8.1

Posted 2 years ago #
malphigian
Member

This seems like a bad idea to me. The renaming of a file to give it the .mm extension is a nice way to inform future coders (including yourself when you come back to a project) that "hey, there's some C++ in here!".

Posted 2 years ago #

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