Lua相关问题整理(1)

  1. (Under Linux)cannot find ‘dlsym’ ‘dlopen’ ‘dlerror’ ‘dlclose’

    需要同时链接”dl“库

  2. (Under Linux)编译lua报错luaconf.h:275:31: error: readline/readline.h: No such file or directory

    需要下载并安装GNU Readline Library

  3. PANIC: unprotected error in call to Lua API (unable to get ModuleFileName)

    1: 不推荐的解决方式:将Project Properties->Configuration Properties->General下的Character Set从unicode改成multi-set;
    2: 彻底的解决方式,参考此链接:http://lua-users.org/lists/lua-l/2006-06/msg00427.html

  4. 如何将Lua文本文件转化为Lua块文件(chunk file)

    调用LuaAPI – lua_dump

    关于lua_dump: about lua_dump: Dumps a function as a binary chunk. Receives a Lua function on the top of the stack and produces a binary chunk that, if loaded again, results in a function equivalent to the one dumped. As it produces parts of the chunk, lua_dump calls function writer (see lua_Writer) with the given data to write them.

  5. 如何在C中调用Lua脚本层的库函数

    void BeginLuaLibCall( lua_State *L, const string &libName, const string &functionName )
    {
         lua_pushstring( L, libName.c_str() );
         lua_gettable( L, LUA_GLOBALSINDEX );
         lua_pushstring( L, functionName.c_str() );
         lua_gettable( L, -2 );
    }
    
    void EndLuaLibCall( lua_State *L )
    {
         lua_pop( L, -1 );
    }
    

    示例:调用table.getn(该函数用来获取一个table的size)

    // 利用上面的函数
    BeginLuaLibCall( L, "table", "getn" );
    // 假设你的脚本中有一个table变量myTable,获取它到栈顶
    lua_getglobal( L, "myTable" ); 
    // 执行table.getn( t )
    lua_call( L, 1, 1 ); 
    // 打印结果
    std::cout << lua_tonumber( L, -1 ) ) << std::endl;
    // 将结果弹出栈
    lua_pop( L, -1 );
    // 将名叫“table”的table弹出栈
    EndLuaLibCall( L);
    
This entry was written by Benny Chen , posted on Monday November 08 2010at 12:11 pm , filed under Lua, 游戏开发 | Game Programming and tagged , , , . Bookmark the permalink . Post a comment below or leave a trackback: Trackback URL.

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