basil60 wrote:I'm keen to have some in-game programming environment - preferably LUA (but beggars can't be choosers). A bit like Pi Minecraft - where you can use Python to build In-game.
Search the forum! There's just been a mod released that emulates that python interface.
As long as you stick to your singleplayer world, you might also do something simple as adding a command which executes a particular lua file on the fly. That'd be too insecure for a server, but in singleplayer it won't matter.
basil60 wrote:The LUA Controllers is good - but the turtle option seemed familiar.
The turtle mod is pretty old by now. Formspecs did change a bit since then. It's very likely that exiting the formspec isn't recognized correctly anymore. If you want to do something in lua, why not take a look at that mod and find out why it doesn't work as you want to? Fork it and apply all the changes you want to? This is open source after all :-) Just do so in the mod's thread :-)