This shows you how you can create a cocos2d application with your application code written in Lua. It's set up with cocos2d and iPhone Wax as git submodules and built as static libraries.

main.m

wax_startWithExtensions(luaopen_wax_http, luaopen_wax_json, luaopen_wax_xml, nil);

Starts up the wax Lua environment. Also loads a few extensions.

data/scripts/LuaScene.lua

waxClass{ "LuaScene", CCScene }
function init(self)
  ...
end

This is where the actual Scene is created in Lua. waxClass creates "LuaScene" as both a Lua object and an objective-c class.

cocowaxAppDelegate.m

[[CCDirector sharedDirector] runWithScene: 
  [[[NSClassFromString(@"LuaScene") alloc] init] autorelease]];		

Creates the instance of the lua scene in objective-c and runs it as normal.

copy-scripts.sh

Copies the data directory with all the Lua scripts into the application bundle.

Extracted from the super awesome iPad game iBots Launch : )