Simple Lua (Old)

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SIMPLE LUA

Slightly revised version

• Waiting
• Redstone
  • Inputs
  • Outputs
• Values
• Functions And Arguments
• loops

Waiting

Well you've created an Infinite Loop, but when you ran it your program your Minecraft crashed? Well what do you do....

You add a sleep( double Value ) Well you will learn what a double Value is later but a simple Explanation is:

A number with a decimal.

Redstone

Well now you have a wait and a loop(I will teach you how to do a loop in loops)

Now you want to edit redstone signals:

Outputs/Inputs

back	front	left
bottom	right	top

the back is the side behind the monitor

left is the left of the moniter

top is the top of the monitor

etc...

well theres 2 ways to call the redstone funtion

1. rs()
2. redstone()

Inputs: 

inputs are for when you want to do something when a redstone signal is read

so its redstone.getInput( side )

Outputs:
outputs are for when you want to set a redstone signal

so its redstone.setOutput( side, boolean )

If you want to get all the sides and test which is true you use :

redstone.getSides()

And for extra help

type

• help programming
• help api
• help redstone

Values:

There are mas

1. Integers
2. Booleans
3. Tables
4. Doubles
5. Objects
6. nil
7. string

Now lets go into detail:

to define a value you need a name and a value

like this <Name> = <Value>

for a table you do <Name> = {<Value1>,<Value2>...etc}

without the <>

Integer : a single number like 1
Table: a collection of different data types
Double: a number with a decimal like 1.1
Boolean: a true or false value
Nil: nothing not even nothing
Objects: An object like a function
String: Text defined in between " TEXT HERE "

Functions And Arguments

A function is code put in a special carrier to get differant values or call it over and over again

functions are called like function(args) Simular isn't it ? Yes, redstone.*() is a function

APIS are made out of many functions and values to work togeather

to make a function you need

function <name>(<args>)

-- code here

end

Logic and loops

logic is what makes computers work

Ever heard of IF gates?

If not its simple

if value1 == value2 then--if value1 equals value2 then

--code here

end

the logic operators are

put in the middle

theres greater than >

less than <

greater or equal to >=

less or equal to <=

not ~=

you can compare values and the same if statement

like and, or, not this goes like this

if v1==v2 and v3~=v4 then

end

if you want to do something if the condition is met and something else if its not then you add an else

if v1==v2 then

--code

else

--code

end

but what if you want 3 or more possibilitys?

then theres elseif

if v1 == v2 then

--code

elseif v1>v2 then

--code

else

--code

end

So when are we learning about Loops?

Well there are 2 mainly used loops

while loops

and

for loops

a while loop is a special kind of loop that repeats until its condition is met

so if you want an infanite loop

while true do

sleep(1)

end

but if you want a loop that stops

con = 5

met = 0

while met < con do

met = met+ 1

sleep(1)

print met

end

If you want to read a players action like for a password

you type

write "Enter Password: "-- this displays Enter Password: (and reads only past here)

a = read()-- allows an Input into the variable name a Which is a string

Well that covers it....

Sorry if it's messy

without the <>