Lua Learning to make scripts..

[Xapuur]

Hello !. I am learning to do scripts (i read the guides of the forum), and i have some questions:

1) What's a "nil" value, for what serve?
2) For what serves return, and what is it? (True and false, or 1 and 0) What's the difference if i use 1 or true?
3) In detail, for what is "cid"? Because i use this in the most of the scripts, but i don't know for what works.. Example in this function: doPlayerSetVocation(cid,voc)
4) How i can use the function getPromotedVocation(vocation) if i wanna promote a player for talkaction paying 20k?
5) Where are a guide for .lua lenguage? NOT SCRIPT OTSERVER !, lua lenguage..

That's for now
Kind regards
Xapuur

 

[Shinmaru]

1) nil means that nothing was returned. nil, true and false, etc. are Boolean.
2) 'return' is used just as it says, it returns something, even a nil. It can return whatever you want it to return or whatever it was scripted/programmed to return.
3) cid is Creature ID, it's a Unique ID that every creature(Monsters and Players) have. It Identifies the creature using the script.
4) too lazy to make a script sorry.
5) You can go to LUA.org they should have tutorials about it. I'll try to find some tutorials, but some are a little hard to understand if you are new to it.

 

[Xapuur]

Putting a "nil" value, is not the same that not put "return"?
For what i can/must/should use return?

Thanks for the page, i will see it.