Personalization layer

[alejandroalzate]

Hello this is a reaaaaaaally quick question what I have to customize the error screen?

like change from what it does (cuz makes me crazy to brick the coded runtimes) and for example I want to be able when the code goes wild:

Code: Select all

if key == "f5" then
if debug then
love.quit("restart")
end
end

to don't get busted and have to close the framework to reopen it again its kind a thing what can make you cry

I want help, and thanks for your if waste time on me

[pgimeno]

See love.errorhandler.

[Tabaqui]

I'm not sure if this is the correct way to do it, but overriding love.errorhandler this way seems to do the trick:

Code: Select all

local utf8 = require("utf8")

local function error_printer(msg, layer)
	print((debug.traceback("Error: " .. tostring(msg), 1+(layer or 1)):gsub("\n[^\n]+$", "")))
end

function love.errorhandler(msg)
	msg = tostring(msg)

	error_printer(msg, 2)

	if not love.window or not love.graphics or not love.event then
		return
	end

	if not love.graphics.isCreated() or not love.window.isOpen() then
		local success, status = pcall(love.window.setMode, 800, 600)
		if not success or not status then
			return
		end
	end

	-- Reset state.
	if love.mouse then
		love.mouse.setVisible(true)
		love.mouse.setGrabbed(false)
		love.mouse.setRelativeMode(false)
		if love.mouse.isCursorSupported() then
			love.mouse.setCursor()
		end
	end
	if love.joystick then
		-- Stop all joystick vibrations.
		for i,v in ipairs(love.joystick.getJoysticks()) do
			v:setVibration()
		end
	end
	if love.audio then love.audio.stop() end

	love.graphics.reset()
	local font = love.graphics.setNewFont(14)

	love.graphics.setColor(1, 1, 1)

	local trace = debug.traceback()

	love.graphics.origin()

	local sanitizedmsg = {}
	for char in msg:gmatch(utf8.charpattern) do
		table.insert(sanitizedmsg, char)
	end
	sanitizedmsg = table.concat(sanitizedmsg)

	local err = {}

	table.insert(err, "Error\n")
	table.insert(err, sanitizedmsg)

	if #sanitizedmsg ~= #msg then
		table.insert(err, "Invalid UTF-8 string in error message.")
	end

	table.insert(err, "\n")

	for l in trace:gmatch("(.-)\n") do
		if not l:match("boot.lua") then
			l = l:gsub("stack traceback:", "Traceback\n")
			table.insert(err, l)
		end
	end

	local p = table.concat(err, "\n")

	p = p:gsub("\t", "")
	p = p:gsub("%[string \"(.-)\"%]", "%1")

	local function draw()
		if not love.graphics.isActive() then return end
		local pos = 70
		love.graphics.clear(89/255, 157/255, 220/255)
		love.graphics.printf(p, pos, pos, love.graphics.getWidth() - pos)
		love.graphics.present()
	end

	local fullErrorText = p
	local function copyToClipboard()
		if not love.system then return end
		love.system.setClipboardText(fullErrorText)
		p = p .. "\nCopied to clipboard!"
	end

	if love.system then
		p = p .. "\n\nPress Ctrl+C or tap to copy this error"
		p = p .. "\n\nPress Escape to reload"
	end

	return function()
		love.event.pump()

		for e, a, b, c in love.event.poll() do
			if e == "quit" then
				return 1
			elseif e == "keypressed" and a == "escape" then
				return love.init()
			elseif e == "keypressed" and a == "c" and love.keyboard.isDown("lctrl", "rctrl") then
				copyToClipboard()
			elseif e == "touchpressed" then
				local name = love.window.getTitle()
				if #name == 0 or name == "Untitled" then name = "Game" end
				local buttons = {"OK", "Cancel"}
				if love.system then
					buttons[3] = "Copy to clipboard"
				end
				local pressed = love.window.showMessageBox("Quit "..name.."?", "", buttons)
				if pressed == 1 then
					return 1
				elseif pressed == 3 then
					copyToClipboard()
				end
			end
		end

		draw()

		if love.timer then
			love.timer.sleep(0.1)
		end
	end

end

I've just added another message that tells the user to press "Escape" to reload and changed the return value of the escape pressed event from 1 to love.init().

There must be a better way to do this.

EDIT:
Tested, it doesn't work well since when an error is raised it won't be cleared but might be a starting point.