cocos2dx3.0rc导出自定义类到lua的方法详细步骤

发布时间：2020-12-14 20:42:29 所属栏目：百科来源：网络整理

导读：我写了一个用3.0的工具导出类到lua，自动生成代码的方法。以前要导出c++类到lua，就得手动维护pkg文件，那简直就是噩梦，3.0以后就会感觉生活很轻松了。下面我就在说下具体做法。 1、安装必要的库和工具包，以及配置相关环境变量，请按照cocos2d-x-3.0rc0

我写了一个用3.0的工具导出类到lua，自动生成代码的方法。

以前要导出c++类到lua，就得手动维护pkg文件，那简直就是噩梦，3.0以后就会感觉生活很轻松了。
下面我就在说下具体做法。
1、安装必要的库和工具包，以及配置相关环境变量，请按照cocos2d-x-3.0rc0toolstoluaREADME.mdown说得去做，不做赘述。
2、写c++类(我测试用的是cocos2d-x-3.0rc0testslua-empty-testprojectClassesHelloWorldScene.cpp)
3、写一个生成的python脚本，你不会写，没关系，我们会照猫画虎
1）进入目录cocos2d-x-3.0rc0toolstolua，复制一份genbindings.py，命名为genbindings_myclass.py
2）把生成目录制定到咱工程里去，打开genbindings_myclass.py把

 
   ? 
  
        output_dir  
        = 
         '%s/cocos/scripting/lua-bindings/auto' 
         % 
         project_root

改成

 '%s/tests/lua-empty-test/project/Classes/auto' 
        3）修改命令参数,把 

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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' 
         
                  
        } 
       

'myclass.ini' 
        'myclass' 
        'lua_myclass_auto' 
        ) } 
       

 
        [myclass] 
       
        # the prefix to be added to the generated functions. You might or might not use this in your own 
       
        # templates 
       
        prefix = myclass 
       
        # 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 
       
        android_flags = -D_SIZE_T_DEFINED_ 
       
        clang_headers = -I%(clangllvmdir)s/lib/clang/3.3/include 
       
        clang_flags = -nostdinc -x c++ -std=c++11 
       
        cocos_headers = -I%(cocosdir)s/cocos -I%(cocosdir)s/cocos/2d -I%(cocosdir)s/cocos/base -I%(cocosdir)s/cocos/ui -I%(cocosdir)s/cocos/physics -I%(cocosdir)s/cocos/2d/platform -I%(cocosdir)s/cocos/2d/platform/android -I%(cocosdir)s/cocos/math/kazmath -I%(cocosdir)s/extensions -I%(cocosdir)s/external -I%(cocosdir)s/cocos/editor-support -I%(cocosdir)s 
       
        cocos_flags = -DANDROID -DCOCOS2D_JAVASCRIPT 
       
        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/tests/lua-empty- 
        test 
        /project/Classes/HelloWorldScene.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 = HelloWorld 
       
        # 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 = Ref ProcessBase 
       
        # 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

 
        prefix = myclass 
       

 
        target_namespace = 
       

 
        /project/Classes/HelloWorldScene.h 
       

 
        classes = HelloWorld 
       

 
        skip = 
       

 
        abstract_classes = 
       

 
        local 
         function 
         main() 
       

 
        -- avoid memory leak

 
        collectgarbage 
        ( 
        "setpause" 
         
        "setstepmul"

 
        
          
        local 
         hello = HelloWorld:create() 
        
        
         sceneGame = cc.Scene:create() 
        
        
          
        sceneGame:addChild(hello) 
        
        
        cc.Director:getInstance():runWithScene(sceneGame) 
        
       
          
        
        
        if 
        (1==1)  
        then 
        
        
            
        return 
        
        
        end 
        
        
        …… 
        
        
        ……