my basic lua tutorial

lua scripting guide for you all this will cover basic statements helping you make some simple scripts or troubleshoot

pre made scripts

1 functions

2 statements
2.1 if
2.2 else
2.3 else if
2.4 values
2.5 calling functions

3 common errors





1 Functions

a lua script is basicly a bunch of Functions and variables that can be called on by events eg button click

a function should follow this basic format

Code:

Function example();

(contents)

end

other wise it wont work also If statements need to have a additional end example

Code:

Function Example2();

If variable1 then

Function1();

 end

end

these are just basic it is most likely they will be much more complex than these



2 Statements

statements can be used for a lot of things mainly adding multiple chooses or making sure the input is correct ill

cover a few basic ones here

2.1 If

if statements are used to make the function behave differently depending on factors for instance if you have a

password and it needs to be over 6 charters long

Code:

Function lenthcheck(inputlenth);


If (inputlenth >= 6) then;

invaildlenth();

else

Addpass(password);

 end

end

or another example

Code:

if (Wrotebyfreedompal == true) then;

SpellCheck();

end

the function above checks if the length of the input is less than 6 if it is it rejects it if it isn't then it

pass's on to another function

it work correctly they need 2 basic things: a condition to check, and a end


2.2 Else

else statements are used in If statements and tell the if statement what to do if the condition's isn't met for

example

Code:

if example1 then;

Function1();

else

Function2();

end

telling it that if the conditions isn't met then to carry out Function2 instead

2.3 Else if statements

else if statements are like else statements but tell it to check another condition of the first is not met

Code:

if example1 then;

funchtion1();

else if example2 then;

funchtion2();

end

so if example1 isn't met then it will check example 2 if none are met then it simply does nothing but you can also

use else statements to specify what to do if non of the conditions are met.

2.4 values
you can set the value of variables that is used though out the script or just within a function if needed like if

you want a function to loop but each time it does adds 1 you can set i to 1 and then have your looping function add

one each time

Code:

i = 1

function addone();

i = i + 1

end

this would be useful for a counter

2.5 calling functions
ive been pretty much doing this though out this but ill explain it anyway
if you use the same code a lot then it is easier to make it a function to save time and effort

Code:

Function Funchtion1();

z = x + y

if (z == 2) then

z = 3
y = 4
x = y x z
self = this
freedompal = "pwns icebound"

end


Function Funchtion2();

x = x + y

if (x == 39) then

z = 3
y = 4
x = y x z
self = this
freedompal = "pwns icebound"

end

for this it would be much easier to put

Code:

function shortened();

z = 3
y = 4
x = y x z
self = this
freedompal = "pwns icebound"

end

Function Funchtion1();

z = x + y

if (z == 2) then

shortened();

end

Function Funchtion2();

x = x + y

if (x == 39) then

shortened();

end

also you may want the result of a function to be passed onto another function

Code:

function addup();

x = input1
y = input2

z = x + y

showoutput(z);

end

this it adds up 2 numbers inputed into it and sends the answer to the output function


3 common errors

common errors like one letter wrong can cause errors but there so easy over look here's a few i make a lot

forgetting to add a end to a if statement will cause errors saying that a function isn't closed

not capitalizing the first letter of function names that are called when the first letter is capitalised in the name

or vise versa

spelling self explanatory

forgetting to add .. to strings when they are going to be part of text in the chat window example

Code:

sendchatmessage("hi" target)

should be

Code:

 sendchatmessage("hi"..target)

so double check scripts of your getting strange errors


if you feel i have put something in a hard to understand way feel free to ask me to explain or change it if you

understand it