Guide #2 native lua libraries, optimizations, speed of different functions etc

Guides #3 - #x will use GoS api only and show a bit more advanced stuff

Guides #x - #y will use Inspired_new.lua api to actually show how to write a simple champion script

Guide #1:

The basics:

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Setup.exe

x64 Setup.exe

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Spoiler

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Care: The following code is executed on https://repl.it/languages/lua

If you want it to work for GoS you either have to write

require("Inspired.lua")or

print = PrintChatat the top of your file

Since you actually want to store stuff you will have to use something called variables.

myVar1 = "Hello World!"This code assigns the string "Hello World!" to the variable called myVar1

What can we do with those variables?

myVar1 = "Hello World!" print(myVar1)This will print out the assigned value to the variable!

But what if we only want to print something under a certain circumstance?

myVar1 = "Hello World!" myVar2 = 3 if myVar2 == 3 then print(myVar1) endConditions in lua have to go like this: "if .... then .... end"

If myVar2 is equals 3 (double = is a conditional check!) then we execute the print function!

As you saw above there is a function called print and we call it with parentheses

But how do we define our own functions?

myVar1 = "Hello!" function MyFunction1() print(myVar1) endNow we defined a function! If we execute this... nothing happens, why? We did not call it yet!

But how do we call it?

myVar1 = "Hello!" function MyFunction1() print(myVar1) end MyFunction1()Now we called it and it printed myVar1!

But why are functions useful?

function MyFunction1(var) print(var * 3) endAs you can see there is now something in the parentheses. This is a local variable that only exists in the function and can be used there!

But why are functions useful? #2

function MyFunction1(var) print(var * 3) end MyFunction1(1) MyFunction1(2) MyFunction1(3) MyFunction1(4) MyFunction1(5)As you can see after executing it we used the same function with different variables to get a different outcome but did not have to write print( var * 3 ) every single time.

As you saw I just multiplied a number by 3, what other numeric operators does lua have?

a = 13 b = 2 print( a + b ) print( a - b ) print( a * b ) print( a / b ) print( a % b )Wow so much math!

Let's quickly move on to something else... strings!

text1 = "Hello" text2 = " " text3 = "World"Now we declared 3 text variables but we'd like to print them all at once

How we do that? We append them!

text1 = "Hello" text2 = " " text3 = "World" print(text1 .. text2 .. text3 .. "!")As you can see you can append variables containing strings together with other variables and strings with the .. operator

As we had previously we can make a condition under which we want to execute certain stuff, but how do we check if condition is not met?

a = 5 b = 10 if a == b then print("a is equal to b!") else print("a is not equal to b!") endAnd how do we check if a variable is simply higher or lower than another?

a = 5 b = 10 if a ~= b then print("a is not equals b") end if a > b then print("a is bigger than b") end if a >= b then print("a is bigger or equals b") end if a <= b then print("a is smaller or equals b") end if a < b then print("a is smaller than b") endNow we have more conditional checks, yey!

But on certain conditions more than one gets print, what can we do?

a = 10 b = 5 if a < b then print("a is smaller than b") elseif a == b then print("a is equals b") elseif a > b then print("a is bigger than b") endNow only one of those cases will get printed!

Now how do we add a comment to our code so it is easier to understand lateron?

a = 10 -- a is now 10 b = 5 -- b is now 5 if a == b then -- check for a equals b print("a is b!") -- print endWow so many comments! But too many is unreadable aswell..

But what if i want to store a lot of data? Like, a lot a lot? Fear not! Lua has exactly the concept you need!

myTable1 = {1, 6, 2, 8, 3, 4, 9} -- define a table print(myTable1[3]) -- this will print the 3rd entry in my table -> 2 print(myTable1[7]) -- this will print the 7th entry in my table -> 9 print(myTable1[10]) -- this does not exist in the table and therefore will not print anything!But what if i want to index the table for something else?

myTable1 = { myIndex1 = "Hello!", myIndex2 = 1, myIndex3 = 42 } print(myTable1.myIndex1) print(myTable1.myIndex2) print(myTable1.myIndex3)Can i store functions in tables? Of course! Can i save anything in tables? OF COURSE!

myTable1 = { function1 = function() print("hi!") end, table1 = { 1, 2, 3}, string1 = "HHello!", number1 = 57 } print(myTable1.function1()) print(myTable1.table1[1]) print(myTable1.table1[2]) print(myTable1.table1[3]) print(myTable1.string1) print(myTable1.number1)But.. How do i automate this?

You can iterate over tables!

myTable1 = { 1, 5, 2, 3, 8, 7, 5, 1, 4, 2, 3, 5, 7, 9 } for key = 1, #myTable1 do -- #myTable1 returns table length value = myTable1[key] print("Entry: "..key.." holds Value: "..value) end for key, value in ipairs(myTable1) do -- sorted print("Entry: "..key.." holds Value: "..value) end for key, value in pairs(myTable1) do -- unsorted, faster print("Entry: "..key.." holds Value: "..value) endWhat other lua functions are there?

assert(condtition, message) -- will print the message if condition is not met and end execution error(message) -- will print the message and end execution require(path) -- will load the lua file located at specified pathLesson #3:

Native lua libraries:

-> math

math.abs(number) -- returns absolute value of a number math.acos(number) -- arc cosine of x (radians) math.asin(number) -- arc sine of x (radians) math.cos(number) -- cosine of x (radians) math.sin(number) -- sine of x (radians) math.atan(number) -- arc tan of x (radians) math.tan(number) -- tan of x (radians) math.ceil(number) -- rounds number up math.floor(number) -- rounds number down math.deg(number) -- converts angle x from radians to degree math.rad(number) -- converts angle x from degree to radians math.exp(number) -- e ^ number math.huge -- biggest number ever math.pi -- pi.. longest number ever? math.max(number1, number2) -- the one that is bigger number1 or number2 math.min(number1, number2) -- the one that is smaller number1 or number2 math.maxinteger -- max integer value math.mininteger -- min integer value math.random() -- random number between 0 and 1 math.random(num1) -- random number between 1 and num1 math.random(num1, num2) -- random number between num1 and num2 math.sqrt(num1) -- square root of num1-> string

string.byte(string) -- returns number of the string string.char (num1) -- returns string of a number string.len(string) -- returns string length string.lower(string) -- returns the given string but in lowercase string.upper(string) -- returns the given string but in uppercase string.reverse(string) -- returns the given string but reversed string.find(string, searchpattern) -- searches a pattern in a givens tring and returns its position or nothing string.sub(string, number) -- returns a sub stringContinue?