LÖVE

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-- EXAMPLE THREAD SET THING
require "love.event" -- Makes sure it has access to love.event functionality as only love.thread is loaded in a new thread by default

local function cmd(s)
  local foundSpaceAt = string.find(s, " ") -- Looks for a space
  s = string.sub(s,1,foundSpaceAt)-- Take the first command out of the string
  return string.lower(s) -- Would make qUiT quals to quit
end

repeat
  local command = io.read()
  if cmd(command) == "quit" then
    love.event.push('q') -- Quits the game
  end
until false

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--main.lua
local cmd = love.thread.newThread("commandThread","commands.lua") -- unsure if .lua need to be included
function love.load()
  cmd:start()
end

function love.update(dt)
  local command = cmd:get("command") -- Gets command from the thread
  if command then -- It's nil if no new commands has appeared
    if string.sub(command,1,4) == "quit" then -- the 4 is because there's 4 letters in quit
      love.event.push('q') -- QUITS
    end
  end
end

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--commands.lua
repeat
  local cmd = love.thread.getThread("commandThread") -- Gets the current thread
  local command = io.read() -- Reads the user input
  if command then cmd:set("command",command) end -- Sets the variable to be used in the main thread
until false

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function love.keypressed(key)
     if key == "rctrl" then
          debug.debug()
     end
end