LÖVE

pgimeno wrote: ↑Wed Mar 31, 2021 10:42 pm No, it's not possible with Löve (and I'm not sure but I think it's not possible on Windows for GL applications in general to open multiple windows).

zorg wrote: ↑Wed Mar 31, 2021 11:46 pm

pgimeno wrote: ↑Wed Mar 31, 2021 10:42 pm No, it's not possible with Löve (and I'm not sure but I think it's not possible on Windows for GL applications in general to open multiple windows).

Some OpenGL-supporting emulators might beg to differ, but i'm not sure about the difference there, if one exists, to allow that kind of thing...

Another option you might have besides the GUI library is to have two löve apps running (with different code, probably), and have them communicate through some means, a local UDP connection, for instance.

VEXED wrote: ↑Thu Apr 01, 2021 2:06 pm While I will probably go with a GUI library I am curious about running multiple Love apps. How would I go about running another Love app from inside of a currently running Love app? Would this be a portable solution (across OS).

-- This will run in the second project we launch from this one.
local secondary_main_dot_lua = [[
function love.draw()
	love.graphics.rectangle('fill',10,10,100,100)
end
]]

function love.load(arg, morearg)
	-- No conf.lua, so we set the identity here.
	love.filesystem.setIdentity('AAAAA')

	-- Get the save directory path.
	local savpath = love.filesystem.getSaveDirectory()

	if love.filesystem.isFused() then
		-- FUSED

		-- Get the path to the fused executable.
		local exepath = love.filesystem.getSourceBaseDirectory()

		-- Copy non-fused love.exe to save directory from the fused executable. - Assume that you have a copy of love.exe inside your .love file... most inefficient
		love.filesystem.write('lovec.exe', love.filesystem.newFileData('lovec.exe'))

		-- Create secondary project's main.lua file in the save directory.
		love.filesystem.write('main.lua', secondary_main_dot_lua)

		-- Since we can mount the fused executable's path, we don't need to duplicate the dll-s, just copy from there. - the executable can't be copied itself, because it's fused with the project; it CAN NOT open another project due to that taking priority.
		local success = love.filesystem.mount(exepath, "temp")
		if not success then error("Could not mount source base dir.") end
		local files = love.filesystem.getDirectoryItems("temp")
		for i,file in ipairs(files) do
			if love.filesystem.isFile("temp/"..file) and file:match("^.+(%..+)$") == '.dll' then
				love.filesystem.write(file, love.filesystem.newFileData("temp/"..file))
			end
		end
		love.filesystem.unmount("temp")

		-- Needs an extra set of ""-s outside of the ones that go around the two paths!
		io.popen('""' .. savpath .. '/lovec.exe" "' .. savpath .. '/.""')
	else
		-- NOT FUSED

		-- Create secondary project's main.lua file in the save directory.
		love.filesystem.write('main.lua', secondary_main_dot_lua)

		-- We can use the internal path to the used executable to execute another project; no file copying needed.
		io.popen('""' .. morearg[-2] .. '" "' .. savpath .. '/.""')
	end
end

function love.draw()
	love.graphics.circle('fill',10,10,100)
end

zorg wrote: ↑Thu Apr 01, 2021 2:28 pm
I did do this thing on the löve discord server as a test, it only uses löve's own modules and it's windows-only, but it might be editable to make it work across most supported OS-es... (iirc you'd only need to modify the non-fused part of the code)
no guarantees though

CC0 / do whatever you want with the code - license.

zorg wrote: ↑Wed Mar 31, 2021 11:46 pm

pgimeno wrote: ↑Wed Mar 31, 2021 10:42 pm No, it's not possible with Löve (and I'm not sure but I think it's not possible on Windows for GL applications in general to open multiple windows).

Some OpenGL-supporting emulators might beg to differ, but i'm not sure about the difference there, if one exists, to allow that kind of thing...

pgimeno wrote: ↑Fri Apr 02, 2021 10:47 am

zorg wrote: ↑Wed Mar 31, 2021 11:46 pm

pgimeno wrote: ↑Wed Mar 31, 2021 10:42 pm No, it's not possible with Löve (and I'm not sure but I think it's not possible on Windows for GL applications in general to open multiple windows).

Some OpenGL-supporting emulators might beg to differ, but i'm not sure about the difference there, if one exists, to allow that kind of thing...

To clarify, I meant multiple GL windows per process. Of course any process can open multiple non-GL windows; Löve itself can do it (in particular love.window.showMessageBox).

pgimeno wrote: ↑Fri Apr 02, 2021 10:47 am On the other hand, it looks overkill to me to load another Löve instance just to show a window with controls. Even more so if it doesn't come with a conf.lua that disables most modules.

VEXED wrote: ↑Thu Apr 01, 2021 2:06 pm While I will probably go with a GUI library I am curious about running multiple Love apps. How would I go about running another Love app from inside of a currently running Love app? Would this be a portable solution (across OS).