LIKO-12/main.lua

io.stdout:setvbuf("no")
local reboot, events = false

--==Contribution Guide==--
--[[
I did create an events system for liko12, making my work more modular.
Below there is a modified love.run function which implements 4 things:
- Instead of calling love callbacks, it triggers the events with name "love:callback", for ex: "love:mousepressed".
- It contains a small and a nice trick which reloads all the code files (expect main.lua & conf.lua) and reboots liko12 without haveing to restart love.
- When the love.graphics is active (usable) it triggers "love:graphics" event.
- If any "love:quit" event returned true, the quit will be canceled.

About the soft restart:
* To do a soft restart trigger the "love:reboot" event.
* This works by clearing package.loaded expect bit library, then calling love.graphics.reset(), and reseting the events library, and finally restarts love.run from the top (there's an extra while loop you can see).
* In case you changed something in main.lua or conf.lua then you can do a hard restart by calling love.event.quit("restart")
* In DiskOS you can run 'reboot' command to do a soft reboot, or 'reboot hard' to do a hard one (by restarting love).

I don't think anyone would want to edit anything in this file.

==Contributers to this file==
(Add your name when contributing to this file)

- Rami Sabbagh (RamiLego4Game)
]]

love.setDeprecationOutput(false) --Disable desprecation output temporary (Until the 11.0 update is done)

local package_exceptions = {
  "bit", "ffi", "ssl.core", "ssl.context", "ssl.x209", "ssl", "https", "socket.http", "ltn12", "mime", "socket.smtp", "socket", "socket.url"
}

for k,v in ipairs(package_exceptions) do package_exceptions[v] = k end

love.filesystem.load("Engine/errhand.lua")() --Apply the custom error handler.

--Internal Callbacks--
function love.load(args)
  love.filesystem.load("BIOS/init.lua")() --Initialize the BIOS.
  events:trigger("love:load")
end

function love.run(arg)
  local function runReset()
    events = require("Engine.events")
    events:register("love:reboot",function(args) --Code can trigger this event to do a soft restart.
      reboot = args or {}
    end)

    if love.math then
      love.math.setRandomSeed(os.time())
    end

    if love.load then love.load(reboot or arg) end reboot = false

    -- We don't want the first frame's dt to include time taken by love.load.
    if love.timer then love.timer.step() end

    local dt = 0
  end

  runReset() --Reset for the first time

  return function()
    -- Process events.
    if love.event then
      local canvas = love.graphics.getCanvas()
      if canvas then love.graphics.setCanvas() end
      love.event.pump()
      if canvas then love.graphics.setCanvas{canvas,stencil=true} end
      
      for name, a,b,c,d,e,f in love.event.poll() do
        if name == "quit" then
          local r = events:trigger("love:quit")
          --If any event returns true the quit will be cancelled
          for k,v in pairs(r) do
            if v and v[1] then r = nil break end
          end
          if r then return a or 0 end
        else
          events:trigger("love:"..name,a,b,c,d,e,f)
        end
      end
    end

    -- Update dt, as we'll be passing it to update
    if love.timer then
      love.timer.step()
      dt = love.timer.getDelta()
    end

    -- Call update and draw
    events:trigger("love:update",dt) -- will pass 0 if love.timer is disabled

    if love.graphics and love.graphics.isActive() then
      events:trigger("love:graphics")
    end

    if love.timer then love.timer.sleep(0.001) end

    if reboot then
      for k,v in pairs(package.loaded) do
        if not package_exceptions[k] then package.loaded[k] = nil end
      end--Reset the required packages

      love.graphics.reset() --Reset the GPU
      events = nil --Must undefine this.
      runReset() --Reset
    end
  end
end