Compiled lua, can not run on android

cocos2d-x Lua
#1

Compiled lua, can not run on android!

Who are experiencing the same problem？？

#2

luac?
There are some issue sometime, so you should use your own way to run the encrypted code.

#3

Shawn Clovie wrote:

luac?
There are some issue sometime, so you should use your own way to run the encrypted code.

thx,I Already use own way！

#4

yeah, on window, when load lua file, it will use lua default io, so compile lua can running. but android is different, when load lua file, cocos2d-x first load the file content in memory, and then call luaL_loadstring function (the code in scripting/lua/cocos2dx_support/Cocos2dxluaLoader.cpp) , luaL_loadstring can only compile string code. so this is the reason why compile lua code can’t run android.

but it easy to change, this is my implement:
@

int loader_Android(lua_State L)
{ unsigned char pData=NULL;
unsigned long size = 0;
/* modify for read lua script from bytecode */
std::string filename(luaL_checkstring(L, 1));
std::string rel_name;
do{
rel_name=filename*“.lua”;
pData = CCFileUtils::sharedFileUtils->getFileData, “rb”, &size);
}while;
if
{
rel_name=filename*“.luc”;
pData = CCFileUtils::sharedFileUtils()->getFileData(rel_name.c_str(), “rb”, &size);
}
if (pData)
{
if (luaL_loadbuffer(L, (char*)pData,size,rel_name.c_str()) != 0)
{
luaL_error(L, “error loading module s from file s :s",
lua_tostring(L, 1), rel_name.c_str(), lua_tostring(L, -1));
}
}
else
{
CCLog("can not get file data of s”, filename.c_str());
}
CC_SAFE_DELETE_ARRAY(pData);
return 1;
}
@

hope it can help you

#5

NosicLin F wrote:

yeah, on window, when load lua file, it will use lua default io, so compile lua can running. but android is different, when load lua file, cocos2d-x first load the file content in memory, and then call luaL_loadstring function (the code in scripting/lua/cocos2dx_support/Cocos2dxluaLoader.cpp) , luaL_loadstring can only compile string code. so this is the reason why compile lua code can’t run android.
>
but it easy to change, this is my implement:
@
>
int loader_Android(lua_State L)
{ unsigned char pData=NULL;
unsigned long size = 0;
/* modify for read lua script from bytecode /
std::string filename);
std::string rel_name;
do{
rel_name=filename“.lua”;
pData = CCFileUtils::sharedFileUtils->getFileData, “rb”, &size);
}while;
if
{
rel_name=filename“.luc”;
pData = CCFileUtils::sharedFileUtils~~>getFileData, “rb”, &size);
}
if
{
if pData,size,rel_name.c_str) != 0)
{
luaL_error, rel_name.c_str, lua_tostring);
}
}
else
{
CCLog);
}
CC_SAFE_DELETE_ARRAY;
return 1;
}
@
>
>
hope it can help you

Thank you very much
But, How to use it when I loaded the first time ?
My Code:
<pre>
lua_State * L = pEngine~~>getLuaState;
unsigned char** pData=NULL;
unsigned long size = 0;
/* modify for read lua script from bytecode */
string filename(“scripts/main”);
string rel_name;
do{
CCLog(“load data!”);
rel_name=filename+“.lua”;
pData = CCFileUtils::sharedFileUtils()->getFileData(rel_name.c_str(), “rb”, &size);
}while(0);

CCLog(“rel_name = s,size = d”,rel_name.c_str(),size);
CCLog(“pData = s",pData);
if (pData)
{
if (luaL_loadbuffer(L, (char*)pData,size,rel_name.c_str()) != 0)
{
CCLog( “error loading module s from file s :\n\ts”, lua_tostring(L, 1), rel_name.c_str(), lua_tostring(L, –1));
luaL_error(L, “error loading module s from file s :s”,lua_tostring(L, 1), rel_name.c_str(), lua_tostring(L, -1));
}
}
else
{
CCLog("can not get file data of s”, filename.c_str());
}

#6

do you mean how to load the script/main.lua on android ?

#7

NosicLin F wrote:

do you mean how to load the script/main.lua on android ?

yes!

#8

there are some lua project in cocos2d-x, it can running on android. the example in “samples\Lua\HelloLua\proj.android”.

#9

NosicLin F wrote:

there are some lua project in cocos2d-x, it can running on android. the example in “samplesLuaHelloLuaproj.android”.

Sorry, can you speak chinese? My English is not good. so,I did not express clearly what my mean.

我的意思是在C这边首先载入的lua文件，没办法使用编译后的。这边并没有调用到 Cocos2dxLuaLoader 的 loader_Android，而在lua文件里面require的文件则可以是编译后！
我不知道要怎么解决这个问题，我尝试过在 C调用lua文件的时候使用 luaL_loadbuffer 但是行不通！

#10

qing rao wrote:

NosicLin F wrote:
> there are some lua project in cocos2d-x, it can running on android. the example in “samplesLuaHelloLuaproj.android”.
>
Sorry, can you speak chinese? My English is not good. so,I did not express clearly what my mean.
>
我的意思是在C这边首先载入的lua文件，没办法使用编译后的。这边并没有调用到 Cocos2dxLuaLoader 的 loader_Android，而在lua文件里面require的文件则可以是编译后！
我不知道要怎么解决这个问题，我尝试过在 C调用lua文件的时候使用 luaL_loadbuffer 但是行不通！

哦，因为luaL_loadbuffer只会把文件加载成为一个chunk，而不会运行该chunk，所以还要在加一条调用语名lua_pcall

修改你原来的代码为:

@

if (pData)
{
if (luaL_loadbuffer(L, (char**)pData,size,rel_name.c_str)||lua_pcall) /** 修改后的代码 */
{
CCLog( “error loading module s from file s :s", lua_tostring(L, 1), rel_name.c_str(), lua_tostring(L, -1));
luaL_error(L, "error loading module s from file s :\n\ts”,lua_tostring(L, 1), rel_name.c_str(), lua_tostring(L, ~~1));
}
}
else
{
CCLog);
}
@

或者是用这种方法也行：
pEngine~~>executeString(“require cript/main”);

#11

NosicLin F wrote:

there are some lua project in cocos2d-x, it can running on android. the example in “samplesLuaHelloLuaproj.android”.

pEngine->executeString(“require cript/main”);
是可行的！太感谢拉，这个方法我怎么没想到呢！

另外种方法我也试试！