cocos2d-x C++绑定lua tolua++使用

今天使用了一个OnlineImageSprite下载网络图片的类，需要导出给lua使用

千辛万苦，用了一上午加下午3个小时，读了一遍python的源码，饭也没吃成功使用tolua++导出给了lua使用

话不多说，tolua在../cocos2d-x/tools/tolua文件夹下，genbindings是python执行文件，导出的入口，

同层目录下有个README.mdown要求配置一下python的环境和一些配置，很重要

genbindings.py的NDK_ROOT要改为ndk 9，如果是10是不行的，cocos官方写的是10或10+，其实10是不行的，我的做法是直接代码里写死  NDK_ROOT = "E:/Cocos/android-ndk-r9b-windows-x86_64/android-ndk-r9b"

然后output_dir 写你想要的导出路径  output_dir = '%s/cocos/scripting/lua-bindings/auto' % project_root

cmd_args 是配置文件位置，在同层位置下

cmd_args =  {

                        'OnlineImageSprite.ini' : ('OnlineImageSprite', 'lua_OnlineImageSprite_auto'), \

                    }

然后在同层目录下配置OnlineImageSprite.ini

代码如下：

[OnlineImageSprite]

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

# templates

prefix = OnlineImageSprite

# create a target namespace (in javascript, this would create some code like the equiv. to `ns = ns || {}`)

# all classes will be embedded in that namespace

target_namespace = 

android_headers = -I%(androidndkdir)s/platforms/android-14/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/include

android_flags = -D_SIZE_T_DEFINED_ 

clang_headers = -I%(clangllvmdir)s/lib/clang/%(clang_version)s/include 

clang_flags = -nostdinc -x c++ -std=c++11 -U __SSE__

cocos_headers = -I%(cocosdir)s/cocos -I%(cocosdir)s/cocos/editor-support -I%(cocosdir)s/cocos/platform/android -I%(cocosdir)s/external

cocos_flags = -DANDROID

cxxgenerator_headers = 

# extra arguments for clang

extra_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 parse

headers = %(cocosdir)s/cocos/../../runtime-src/Classes/OnlineImageSprite.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 = OnlineImageSprite

# 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" lookup

classes_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 constructor

abstract_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

//

注意要配置的几个参数

[OnlineImageSprite]

prefix = OnlineImageSprite

target_namespace =

headers = %(cocosdir)s/cocos/../../runtime-src/Classes/OnlineImageSprite.h

classes = OnlineImageSprite

skip =

abstract_classes =

然后在tolua目录下，shift+右键在此处打开命令窗口，输入 python genbindings.py ，如果想保留旧的就新建一个别的名字的运行，然后在导出目录下就有啦！