频道导航

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

2019-05-18 Cocos2d-x 前端之家

前端之家收集整理的这篇文章主要介绍了Cocos2d-Lua 3.12 生成绑定导出C++类给LUA调用( tolua genbindings.py 的使用），前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。

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 plaincopy 
   
 #include"cocos2d.h"
 usingnamespacecocos2d;
 classMyClass:publicRef
 {public:
 MyClass(){};
 ~MyClass(){};
 boolinit(){returntrue;};
 CREATE_FUNC(MyClass);
 
 intfoo(inti);
 };

MyClass.cpp

#include"MyClass.h"

intMyClass::foo(inti)

{

returni+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pythonmygenbindings.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\scripting\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

importsys

from_winreg*

# 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

)

defRegisterPy():

try:

reg = OpenKey(HKEY_CURRENT_USER,regpath)

exceptEnvironmentError as e:

reg = CreateKey(HKEY_CURRENT_USER,regpath)

SetValue(reg,installkey,REG_SZ,installpath)

CloseKey(reg)

print"*** Unable to register!"

return

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

if(QueryValue(reg,installkey) == installpathand

QueryValue(reg,pythonkey) == pythonpath):

"=== Python""is already registered!"

return

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

__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：sudopythonsetup.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。

原文链接：https://www.f2er.com/cocos2dx/338256.html