yuetrace.lua

local yue = require("yue")

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

    local p = yue.traceback(msg, 2)
    print(p)

    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 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"
    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 1
            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