cocos2d-lua 学习笔记—1(cocos2dx4.0入门)

cocos2d-lua 学习笔记—、cocos2d－lua版本分类：普通版／Quick版，现在已经合并2、工程的创建a、Cocos Code IDE：配置环境后直接创建，如果需要创建xcode可以运行的工程，需要在Cocos Tools -> Add Native Code support...b、使用命令行 cocos new -p com.lsw.game -l lua -d . HelloWorld创建3、lua的绑定具体的原理可以参考网址：（Cocos2d-x下Lua调用自定义C&#;&#;类和函数的最佳实践） 3.6 lua -- Cocos如何绑定Lua自定义类） "cocos2d.h"class MyTestLua : public cocos2d::Ref {public: MyTestLua(){}; ~MyTestLua(){}; bool init() { return true; }; int func(int i); CREATE_FUNC(MyTestLua);};MyTestLua.cpp:#include "MyTestLua.h"int MyTestLua::func(int i) { return i &#; ;}(2)、跳转到工程目录下的文件夹 frameworks/cocos2d-x/tools/tolua，可以看到目录下有很多init的文件，这些就是我们需要绑定的所有的类的配置文件。还有一个genbindings.py的文件，这个python文件就是绑定需要的python文件。同时还需要注意的是运行这个python文件需要pyyaml、Cheetah这两个包，安装方法网上有很多。(3)、拷贝一个init文件，然后修改名字为我们需要的名字，比如MyTestLua.init(4)、修改MyTestLua.init文件的内容，主要是修改以下几个地方，init文件的内容参数具体的意义后面会介绍。[MyTestLua] prefix = MyTestLua target_namespace = lsw headers = %(cocosdir)s/../runtime-src/Classes/MyTestLua.hclasses = MyTestLua 完整的init如下：[MyTestLua]# the prefix to be added to the generated functions. You might or might not use this in your own# templatesprefix = MyTestLua# create a target namespace (in javascript, this would create some code like the equiv. to `ns = ns || {}`)# all classes will be embedded in that namespacetarget_namespace = lsw# the native namespace in which this module locates, this parameter is used for avoid conflict of the same class name in different modules, as "cocos2d::Label" <-> "cocos2d::ui::Label".cpp_namespace = android_headers = -I%(androidndkdir)s/platforms/android-/arch-arm/usr/include -I%(androidndkdir)s/sources/cxx-stl/gnu-libstdc&#;&#;/4.7/libs/armeabi-v7a/include -I%(androidndkdir)s/sources/cxx-stl/gnu-libstdc&#;&#;/4.7/include -I%(androidndkdir)s/sources/cxx-stl/gnu-libstdc&#;&#;/4.8/libs/armeabi-v7a/include -I%(androidndkdir)s/sources/cxx-stl/gnu-libstdc&#;&#;/4.8/includeandroid_flags = -D_SIZE_T_DEFINED_ clang_headers = -I%(clangllvmdir)s/lib/clang/3.3/include clang_flags = -nostdinc -x c&#;&#; -std=c&#;&#; -U __SSE__cocos_headers = -I%(cocosdir)s/cocos -I%(cocosdir)s/cocos/editor-support -I%(cocosdir)s/cocos/platform/androidcocos_flags = -DANDROIDcxxgenerator_headers = # extra arguments for clangextra_arguments = %(android_headers)s %(clang_headers)s %(cxxgenerator_headers)s %(cocos_headers)s %(android_flags)s %(clang_flags)s %(cocos_flags)s %(extra_flags)s # what headers to parseheaders = %(cocosdir)s/../runtime-src/Classes/MyTestLua.h# what classes to produce code for. You can use regular expressions here. When testing the regular# expression, it will be enclosed in "^$", like this: "^Menu*$".classes = MyTestLua# what should we skip? in the format ClassName::[function function]# ClassName is a regular expression, but will be used like this: "^ClassName$" functions are also# regular expressions, they will not be surrounded by "^$". If you want to skip a whole class, just# add a single "*" as functions. See bellow for several examples. A special class name is "*", which# will apply to all class names. This is a convenience wildcard to be able to skip similar named# functions from all classes.skip = rename_functions = rename_classes =# for all class names, should we remove something when registering in the target VM?remove_prefix = # classes for which there will be no "parent" lookupclasses_have_no_parents = # base classes which will be skipped when their sub-classes found them.base_classes_to_skip =# classes that create no constructor# Set is special and we will use a hand-written constructorabstract_classes = # Determining whether to use script object(js object) to control the lifecycle of native(cpp) object or the other way around. Supported values are 'yes' or 'no'.script_control_cpp = no(5)、修改genbindings.py文件cmd_args = {'cocos2dx.ini' : ('cocos2d-x', 'lua_cocos2dx_auto'), 'MyTestLua.ini' : ('MyTestLua', 'lua_MyTestLua_auto'), ... (6)、运行python genbindings.py，运行的过程中可能会有warning，可以忽略它们(7)、等待片刻后，查看cocos2d_lua_bindings.xcodeproj，在auto文件的目录中可以看到自动生成的lua_MyTestLua_auto.cpp和lua_MyTestLua_auto.hpp,将这两个文件添加到工程中(8)、在cpp文件中由于引用了MyTestLua.h这个文件，但是这个工程的头文件中并没有查找这个的路径。需要修改一下User Header Search Paths，添加路径$(SRCROOT)/../../../../../runtime-src/Classes(9)、添加测试例子function MainScene:myAdd() local t = lsw.MyTestLua:create() print("lsw myTestLua value is "..t:func())end在onCreate方法中调用 self:myAdd()()、运行工程可以看到输出 lsw myTestLua value is 这里只是实际操作lua绑定，具体的原理和解释还需要在仔细的研究。

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