main.lua

-- Love debugging app for discovering joysticks
--

pressed = {}

function love.draw()
    local x = 100
    local y = 100
    local dx = 12
    local joysticks = love.joystick.getJoysticks()
    for i, joystick in pairs(joysticks) do
        local id, instanceid = joystick:getID()
        love.graphics.print(joystick:getName() .. '(' .. joystick:getGUID() .. ':' .. instanceid .. ')', x, y)
        y = y + dx

        local isGamepad = joystick:isGamepad()
        if isGamepad then
            love.graphics.print("isGamepad? true", x, y)
        else
            love.graphics.print("isGamepad? false", x, y)
        end
        y = y + dx

        local supportsVibration = joystick:isVibrationSupported()
        if supportsVibration then
            love.graphics.print("isVibrationSupported? true", x, y)
        else
            love.graphics.print("isVibrationSupported? false", x, y)
        end
        y = y + dx

        local numAxes = joystick:getAxisCount()
        for axis = 1, numAxes do
            local direction = joystick:getAxis(axis)
            love.graphics.print('axis ' .. axis .. ': ' .. direction, x, y)
            y = y + dx
        end

        local numHats = joystick:getHatCount()
        for hat = 1, numHats do
            local direction = joystick:getHat(hat)
            love.graphics.print('hat ' .. hat .. ': ' .. direction, x, y)
            y = y + dx
        end

        local buttons = pressed[instanceid]
        if buttons then
            for button, isPressed in pairs(buttons) do
                local isPressedStr
                if isPressed then
                    isPressedStr = 'pressed'
                else
                    isPressedStr = 'unpressed'
                end
                love.graphics.print('button ' .. button .. ': ' .. isPressedStr, x, y)
                y = y + dx
            end
        end
        y = y + dx
    end
end

function love.joystickpressed(joystick, button)
    local id, instanceid = joystick:getID()
    if pressed[instanceid] then
        pressed[instanceid][button] = true
    else
        pressed[instanceid] = {[button] = true}
    end
end

function love.joystickreleased(joystick, button)
    local id, instanceid = joystick:getID()
    if pressed[instanceid] then
        pressed[instanceid][button] = false
    end
end