if(m_isRunning)
{
    clear();
    init();
}

it's a mistake as m_isRunning is false the first time it should just be :
clear();
init();

and accessory init() don't need to be called in MScript constructor,
just like you said.

Either MScript::init() needs to be called the first time we run the script (rather than when MScript is initialised), or we manually link MScript::function to the function name in MScript::addFunction. As long as we always add to the map, either way should work, if MScript gets restarted, MScript::init() will then re-link any previously added functions. It's just really a case of whether there was a particular reason MScript::init() was being called on construction, or if it's ok to leave it until we run the script.

If I remember (but I need to check to be sure), custom functions just feed a map used by a special lua function
that itself run the custom function from the map.

MScript calls init() on construction, to add all the functions to the lua state. It doesn't call init again unless runScript is called when the script is already running. Therefore, adding functions manually, like I suggested, won't work because it's post-init but pre-run. m_isRunning will be false. The choice then, I think, is either to always call init() on runScript (and not on construction) or to blindly add the function to the lua_State, regardless of whether the script has been initialised, running or whatever. Personally I think the former is best, but I don't know if there was a reason this wasn't done before

Anyway, I've investigated this further. I've finally set up my netbook to easily switch between 3 builds of Maratis (stock distribution, svn dev build and MIngEd dev build) so I can now finally build Maratis and not have to manually copy files over...

Not important. What I have found interesting is that init() is called LONG before the game plugin is loaded... so the reason my functions aren't being found is because it's just being added to the map, but not to the lua_State.

my suggested fix is to change this:

to:

I think that should probably fix it. Unfortunately, my train journey is almost over, so I don't think I'll have time...

The first line is from within the register function that I've been trying to call from various places, the second is from within the script, outside any functions, the last is the first update of the script.

I have no idea why this might be happening, as the MScript setup seems to be that it should add the functions on init(). This is particularly difficult to debug, as I have to build both Maratis, and the game together... I'll see what I can find out

I have a collection of functions I'm trying to add to lua. As far as I know, I'm registering them correctly:

I've tried registering the functions on MGame::MGame(), as a static object when the plugin is loaded, and on the first update of MGame. I've checked the value of broadcastMessage from lua on the first update, and on 10th update, and it's always nil.

As I have said, this is probably my fault, but I can't see what I'm doing wrong...