Cocos2d-Lua 3.12 生成绑定 导出C++类给LUA调用( tolua genbindings.py 的使用）

工具：Python、pyyaml、pyCheetah都用32位版本 (可避免很多错误)

（ps：tolua目录下README.mdown里有下载链接）

frameworks\cocos2d-x\tools\tolua\README.mdown

例子:

MyClass.h

[cpp] view
plain copy

#include "cocos2d.h"  

using namespace cocos2d;  

class MyClass : public Ref  

{public:  

  MyClass()   {};  

  ~MyClass()  {};  

  bool init() { <
4000
span class="keyword" style="margin:0px;padding:0px;border:none;color:rgb(0,102,153);background-color:inherit;font-weight:bold;">return true; };  

  CREATE_FUNC(MyClass);  

  

  int foo(int i);  

};  

MyClass.cpp

[cpp] view
plain copy

#include "MyClass.h"  

int MyClass::foo(int i)  

{  

  return i + 100;  

}  

生成所需的配置文件MyClass.ini
重点提示 可从其他.ini文件复制修改

[MyClass]

# the prefix to be added to the generated functions. You might or might not use this in your own

# templates修改

prefix = MyClass

# all classes will be embedded in that namespace修改

target_namespace = my

#修改

#headers = %(cocosdir)s/../runtime-src/Classes/MyClass.h

headers = MyClass.h

#修改

classes = MyClass

生成frameworks\cocos2d-x\tools\tolua\MyGenbindings.py

        tolua_root = '%s/tools/tolua' % project_root

        output_dir = '%s/tools/tolua/auto' % project_root  输出目录,可自定义,根据需要

        cmd_args = {#'cocos2dx.ini'
: ('cocos2d-x', 'lua_cocos2dx_auto'), \

                    #'cocos2dx_extension.ini' : ('cocos2dx_extension', 'lua_cocos2dx_extension_auto'), \

                    #'cocos2dx_ui.ini' : ('cocos2dx_ui', 'lua_cocos2dx_ui_auto'), \

                    #'cocos2dx_studio.ini' : ('cocos2dx_studio', 'lua_cocos2dx_studio_auto'), \

                    #'cocos2dx_spine.ini' : ('cocos2dx_spine', 'lua_cocos2dx_spine_auto'), \

                    #'cocos2dx_physics.ini' : ('cocos2dx_physics', 'lua_cocos2dx_physics_auto'), \

                    #'cocos2dx_experimental_video.ini' : ('cocos2dx_experimental_video', 'lua_cocos2dx_experimental_video_auto'), \

                    #'cocos2dx_experimental.ini' : ('cocos2dx_experimental', 'lua_cocos2dx_experimental_auto'), \

                    #'cocos2dx_controller.ini' : ('cocos2dx_controller', 'lua_cocos2dx_controller_auto'), \

                    #'cocos2dx_cocosbuilder.ini': ('cocos2dx_cocosbuilder', 'lua_cocos2dx_cocosbuilder_auto'), \

                    #'cocos2dx_cocosdenshion.ini': ('cocos2dx_cocosdenshion', 'lua_cocos2dx_cocosdenshion_auto'), \

                    #'cocos2dx_3d.ini': ('cocos2dx_3d', 'lua_cocos2dx_3d_auto'), \

                    #'cocos2dx_audioengine.ini': ('cocos2dx_audioengine', 'lua_cocos2dx_audioengine_auto'), \

                    #'cocos2dx_csloader.ini' : ('cocos2dx_csloader', 'lua_cocos2dx_csloader_auto'), \

                    #'cocos2dx_experimental_webview.ini' : ('cocos2dx_experimental_webview', 'lua_cocos2dx_experimental_webview_auto'), \

                    #'cocos2dx_physics3d.ini' : ('cocos2dx_physics3d', 'lua_cocos2dx_physics3d_auto'), \

                    #'cocos2dx_navmesh.ini' : ('cocos2dx_navmesh', 'lua_cocos2dx_navmesh_auto'), \
'MyClass.ini' : ('MyClass', 'lua_MyClass_auto'),   根据需要添加的
                    }

运行python mygenbindings.py 即生成在输出目录frameworks\cocos2d-x\tools\tolua\auto

遇到问题参考:

一、How to Use bindings-generator

==================

On Windows:

------------

* Make sure that you have installed `android-ndk-r10c` or later.

* Download python2.7.3 (32bit) from (http://www.python.org/ftp/python/2.7.3/python-2.7.3.msi).

* Add the installed path of python (e.g. C:\Python27) to windows environment variable named 'PATH'.

* Download pyyaml from http://pyyaml.org/download/pyyaml/PyYAML-3.11.win32-py2.7.exe and install it.

* Download pyCheetah from https://raw.github.com/dumganhar/my_old_cocos2d-x_backup/download/downloads/Cheetah.zip, unzip it to "C:\Python27\Lib\site-packages"

* Set environment variables `NDK_ROOT` and `PYTHON_BIN`

* Go to "cocos2d-x/tools/tolua" folder, and run "genbindings.py". The generated codes will be under "cocos\scriptin
1007f
g\auto-generated\lua-bindings".

二、python version 2.7 required,which was not found in the registry

方法：新建一个register.py文件，把一下代码贴进去，保存

#

# script to register Python 2.0 or later for use with win32all

# and other extensions that require Python registry settings

#

# written by Joakim Loew for Secret Labs AB / PythonWare

#

# source:

# http://www.pythonware.com/products/works/articles/regpy20.htm
#

# modified by Valentine Gogichashvili as described in http://www.mail-archive.com/distutils-sig@python.org/msg10512.html
 import sys

 from _winregimport *

 # tweak as necessary

version = sys.version[:3]

installpath = sys.prefix

 

regpath ="SOFTWARE\\Python\\Pythoncore\\%s\\" % (version)

installkey ="InstallPath"

pythonkey ="PythonPath"

pythonpath ="%s;%s\\Lib\\;%s\\DLLs\\" % (

    installpath, installpath, installpath

)

 def RegisterPy():

    try:

        reg = OpenKey(HKEY_CURRENT_USER, regpath)

    except EnvironmentError as e:

        try:

            reg = CreateKey(HKEY_CURRENT_USER, regpath)

            SetValue(reg, installkey, REG_SZ, installpath)

            SetValue(reg, pythonkey, REG_SZ, pythonpath)

            CloseKey(reg)

        except:

            print "***
Unable to register!"

            return

        print "---
Python", version, "is now registered!"

        return

    if (QueryValue(reg, installkey) == installpathand

        QueryValue(reg, pythonkey) == pythonpath):

        CloseKey(reg)

        print "===
Python", version, "is already registered!"

        return

    CloseKey(reg)

    print "***
Unable to register!"

    print "***
You probably have another Python installation!"

 if __name__ =="__main__":

    RegisterPy()
win7是 64的原因，在安装python（32位）时，如果选择只为当前用户，以上问题是不会出现的，如果选择所有用户，那就用上面的方法解决吧。

三、TranslationUnitLoadError: Error parsing translation unit. 的提示错误，基本都是.ini文件没有配置正确，仔细检查一下 .ini文件里的 “headers = ”指向的路径是否正确

四、ImportError: No module named Cheetah.Template

从错误提示就知道缺少cheetah库，所以先从http://pythonhosted.org//Cheetah/这个地址下载库，打开终端，cd
到下载文件夹的目录，

 

输入命令：sudo python setup.py
install即可

如果是windows提示这个错误，那么也是下载Cheetan这个库，然后安装

五、

使用PYTHONPATH环境变量，在这个环境变量中输入相关的路径，不同的路径之间用逗号（英文的！)分开，如果PYTHONPATH 变量还不存在，可以创建它！

这里的路径会自动加入到sys.path中，而且可以在不同的python版本中共享，应该是一样较为方便的方法。

unzip it to "C:\Python27\Lib\site-packages" 若运行出现错误，可以

设置环境变量：PYTHONPATH

D:\AndroidWin764\Python27\libs\site-packages

如何使用生成的文件：

一、把生成的文件添加至项目中，编辑AppDelegate.cpp文件

修改applicationDidFinishLaunching方法，register_all_*加上是生成的的类名。必须放在engine->executeScriptFile前面。
    // register lua module
    auto engine = LuaEngine::getInstance();

    ScriptEngineManager::getInstance()->setScriptEngine(engine);

    lua_State* L = engine->getLuaStack()->getLuaState();

    lua_module_register(L);

//frameworks\cocos2d-x\tools\tolua\auto\lua_MyClass_auto.cpp

//register_all_MyClass(lua_State* tolua_S)

register_all_MyClass(engine->getLuaStack()->getLuaState());

    register_all_packages();

    if (engine->executeScriptFile("src/main.lua"))

    {

        return false;

    }

然后，可以编辑LUA脚本了。