keyboard.lua

local class = require("middleclass/middleclass")

local Keyboard = class("Keyboard")

function Keyboard:initialize()
    self.keys = {}
    self.keypresses = {}

    function love.keypressed(key)
        -- set time pressed down to 0 for key
        self.keys[key] = 0.0
    end

    function love.keyreleased(key)
        if (self.keys[key] >= 0.03) then
            table.insert(self.keypresses, {key = key, time = self.keys[key], timeStamp = 0.0})
        end

        -- clear out keypress time
        self.keys[key] = nil
        if key == "escape" then
            love.event.quit()
        end
    end
end

function Keyboard:update(timeDelta)
    for keyCode, _ in pairs(self.keys) do
        self.keys[keyCode] = self.keys[keyCode] + timeDelta
    end

    for keyCode, keyStruct in pairs(self.keypresses) do
        if keyStruct.timeStamp + timeDelta > 1.0 then
            table.remove(self.keypresses, keyCode)
        end
    end

    for _, keyStruct in pairs(self.keypresses) do
        keyStruct.timeStamp = keyStruct.timeStamp + timeDelta
    end
end

local keyboard = {
    Keyboard = Keyboard
}

return keyboard