Get started

Install

npm i -g lightpl

To execute:

light <file_name>

To translate to js:

light <file_name> -js

Hello world

To print "Hello world" in terminal, create new file hello_world.lpl, then print:

print('Hello world')

and run(in terminal):

light hello_world.lpl

Language tour

Variables

Variables can be defined with "var" keyword

var variableName

Multiple variables can be defined together, separated by coma

var variable1, variable2, variable3

During definition variables can be initialized

var variable = 0

Values

Number

Variables can contain number

var variable = 0

String

String should be in single quote

var variable = 'Hello world'

Bool

Bool is one of two literals

var on = true
var off = false

Null

Null represent nothing

var empty = null

Collections

List

to store similar data you can use lists

var list = [1, 23, 1234]

Map

to store data as "key" "value" pares

var legs = [
    'dog': 4,
    'cat': 4,
    'spider': 8
]

Control flow statements

If

if statements with optional else statements:

if age < 18 {
    print('Access deny')
} else {
    print('Hello')
}

While

A while loop evaluates the condition before the loop:

while apples > 0 {
    print('You have ' + apples + ' apples')
    apples = apples - 1
}

For

"for" is iteration for collections:

for var item in beg {
    print(item)
}

Operations

Mathematical

'+', '-', '*', '/'

var ourMoney = myMoney + yourMoney

Comparision

'==', '!=', '>=', '<=', '>', '<'

if playerHealth == 0 {
    print('You lose')
}

Logical

'!', '&&', '||'

if day == 'sunday' || day == 'saturday' {
    print('This is weekend')
}

Comments

you can comment your code to explain it purpose

// We store time in seconds but show it in minutes
print(time / 60)