LuaSyntax.lua

-- LUA SYNTAX (WIP)

-- PRINTING
-- Print a string
print("Hello World")

-- Print multiple strings
print("Hello","World")

-- Join/Concatenate two strings (gives errors if not strings)
print("Hello" .. "World")

-- Joining two strings with spaces
print("Hello" .. " World")

-- Printing numbers
print(27)


-- INPUT

-- OPERATORS
print('\nOPERATORS:\n')
----------------------------------------------------------------------

-- Adding
print(1+2)

-- Subtracting
print(4-3)

-- Multiplying
print(3*3)

-- Dividing (not accurate if one of the terms isn't a decimal)
print(18/3)

-- Remainder/Modulus
print(9%4)

-- Power
--

-- Square root
 -- must use at least one float

-- Comparisons
print(2<4) -- less than
print(4>9) -- greather than
print(5==6) -- is equal to
print(3==3)
print(4~=4) -- not equal to
print(4~=9)


-- COMMENTS
-- Single line comment
--[[This is a multiline comment in lua. It can take some getting used to--]]


-- VARIABLES
print('\nVARIABLES:\n')
-----------------------------------------------------------------------
-- Types
-----------------------------------------------------------------------

-- Character
at = "@"
print(at)

-- String (wrapped in quotes)
name = "Raphael"
print(name)

-- Integer (no quotes quotes)
age = 29
print(age)

-- Float
height = 6.3
print(height)

-- Boolean
is_cool = True
print(is_cool)

-- List/Array
array = {} --an empty array
colors = {"red","orange","yellow","green","blue","indigo","violet"}
numbers = {0,1,2,3,4,5,6,7,8,9}
mixed_array  = {9,"alpha",63.3,true}
print(array)
print(colors)
print(array)
print(array)

-- Tuple
location = {0,0}
print(location)

-- Dictionary
dictionary = {key="value"}
print(dictionary["key"])
print(dictionary.key)

-- Overwriting a variable
is_cool = false
name = "Tutorial Doctor"
age = 10585 -- in days
height = 6.1
print(is_cool,name,age,height)


-- Set a boolean to the opposite of itself
is_cool = not is_cool --False
print(is_cool)

-- Casting (changing the type of a variable)
-- To a float
--age = float(age)
--print(age)

-- To an integer
--height = int(height)
--print(height)

-- To a string
--is_cool = str(is_cool)
--print(is_cool)


-- FUNCTIONS

-- Argument Parameters
function A(...)
    print(arg)
end

A(3,5,6)

-- CONDITIONAL
-- LOOPS

function draw()
    background(39, 39, 39, 255)
end

-- CLASSES
point = {x = 10, y = 0} 
function point:move (dx, dy) 
    self.x = self.x + dx 
    self.y = self.y + dy 
end 

point:move(5, 5) 
print(point.x, point.y) 
point.move(point, 4, 2) 
print(point.x, point.y)

-- MODULES