Functions for dummies?

[TransformedBG]

So im a Noob not going to lie. And ive done the simple "hello world" file. Worked fine ect.

Now im just trying to get a little more in depth by doing simple yet not so simple things like functions. Im used to C++ where you make a prototype and a function call. And from what im understanding that kind of how .LUA and .XML work?

so heres what im trying:

GLUA.toc:

## Interface: 40000
## X-Curse-Packaged-Version: 1.0.0.1
## X-Curse-Project-Name: GLUA
## notes: this should spam a lvl up message in your guild chat stating that you have leveled up. It should call your class and lvl.

GLUA.xml
GLUA.lua

GLUA.lua

GLUA = {};
local GuildLevelUp = GLUA;

function GuildLevelUp.OnLoad(self) -- Loads on player login --
	self:RegesterEvent("PLAYER_LEVEL_UP");
	DEFAULT_CHAT_FRAME:AddMessage("[Scare Bears INC] Guild Level Up Announcer has been initialized!");
	DEFAULT_CHAT_FRAME:AddMessage(" Ver. 1.0.0.9");
	DEFAULT_CHAT_FRAME:AddMessage(" Currently there are no /commands.");
end

function GuildLevelUp.OnEvent(event) -- should process on event --
	local lvl = UnitLevel("player"); -- local variable that tells me what lvl the toon is --
	local race = UnitClass("player"); -- local variable that tells me what cls the toon is --
	if ( (event == "PLAYER_LEVEL_UP") ) then
		SendChatMessage("DING! Yeah thats right im now a level "..lvl.." "..race..".", "GUILD", nil, nil);
	end
end

GLUA.xml

<UI xmlns="http://www.blizzard.com/wow/ui/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.blizzard.com/wow/ui/">
	<Script file="GLUA.lua" />
	<Frame name ="GLUAFrame" hidden ="false">
		<Scripts>
			<OnLoad>GuildLevelUp.OnLoad(self);</OnLoad>
			<OnEvent>GuildLevelUp.OnEvent(event);</OnEvent>
		</Scripts>
	</Frame>
</UI>

Question 1:
Now from my understanding i shouldn't have to load GLUA.xml & GLUA.lua in the toc file just the GLUA.xml, because the <script file="glua.lua"/> should initialized the lua file?

Question 2:
Why doesnt my code work? lol am i missing a function or handler or something? Or do every program have to have a frame?

Question 3:
How would i write a test function and implement it in the game? ie i want to simulate a lvl up?

Not exactly sure what im doing. just have a generalized coding idea. I have been reading and just looking at examples. so this is kind of where i stand. Any help would be greatly appreciated.

[Xinhuan]

1. Correct. You should take out the .lua file from the .toc file.

2. You misspelled RegisterEvent as RegesterEvent

3. Just run your function.

/run GLUA.OnEvent("PLAYER_LEVEL_UP")

should do it from your chat.

[TransformedBG]

Originally Posted by Xinhuan 1. Correct. You should take out the .lua file from the .toc file. 2. You misspelled RegisterEvent as RegesterEvent 3. Just run your function. /run GLUA.OnEvent("PLAYER_LEVEL_UP") should do it from your chat.

Ty kind sir.. let me give this a shot and see what happens

[TransformedBG]

okay so after /run GLUA.OnEvent("PLAYER_LEVEL_UP") the function was successful.

However I cant get the OnLoad function to load when the game starts.. any idea?

[Xinhuan]

First, see if your frame got created, do this:

/print GLUAFrame

You should see "Table: 0x29347293" or whatever if it got created.

If it didn't, you might want to edit your XML and remove the empty spaces before the equal signs

<Frame name="GLUAFrame" hidden="false">

[Dridzt]

Your OnEvent is a couple parameters short too:
xml

<OnEvent>GuildLevelUp.OnEvent(self, event, ...);</OnEvent>

lua

function GuildLevelUp.OnEvent(self, event, ...)

Secondly it looks like the script handler in the xml are trying to call functions that are out of scope.

You have 'local GuildLevelUp' on top of your .lua file.

Try changing the function names in the .xml to GLUA.OnEvent and GLUA.OnLoad
The whole getting a local reference to a global table deal is pointless for this particular case btw.

[TransformedBG]

Originally Posted by Xinhuan First, see if your frame got created, do this: /print GLUAFrame You should see "Table: 0x29347293" or whatever if it got created. If it didn't, you might want to edit your XML and remove the empty spaces before the equal signs <Frame name="GLUAFrame" hidden="false">

so i tried /print in game and even tired print(GLUAFrame) in the .lua file

/print in game just give me refert to help yada yada yada
and when i put it in the lua file i get a return value of nil.

tried editing xml file as well.

[yj589794]

Originally Posted by TransformedBG Im used to C++ where you make a prototype and a function call. And from what im understanding that kind of how .LUA and .XML work?

If you are familiar with other languages then you should be able to make quick work of reading the following:

Lua 5.1. Reference Manual
Programming in Lua

The above links should give you all the technical info about Lua that you could ever wish for.