function love.load()
    Object = require "classic" -- classic is the library used to simulate classes
    require "player"
    require "enemy"
    require "bullet"

    player = Player()
    enemy = Enemy()
    -- we need to shoot bullets, so a list of bullets is created
    listOfBullets = {}
end

function love.keypressed(key)
    player:keyPressed(key)
end

function love.update(dt)
    player:update(dt)
    enemy:update(dt)
    -- iterate through the table and update/draw all the bullets
    for i,v in ipairs(listOfBullets) do
        v:update(dt)
    end
end

function love.draw()
    player:draw()
    enemy:draw()
    for i,v in ipairs(listOfBullets) do
        v:draw()
    end
end