Love2d help

require("menus") --Disregard
require("conf") --Disregard

love.window.setTitle("Beaverball: Revenge")
love.window.setMode(1920, 1200)
love.graphics.setDefaultFilter('nearest', 'nearest')

showFPS = false

function love.load()
  beaver = {}
  beaver.image = love.graphics.newImage('beaver.png')
  beaver.x = 0
  beaver.y = 1900
  beaver.speed = 5

  --[[redneck = {}
  redneck.x = 0
  redneck.y = 0
  redneck.speed = 0]]

  gamestate = "startmenu"
end
function love.update(dt)
  --Side Collision
  if beaver.x < 0 then
    beaver.x = 0
  elseif beaver.x > 1835 then
    beaver.x = 1835
  elseif beaver.y < 50 then
    beaver.y = 50
  elseif beaver.y > 1060   then
    beaver.y = 1060
  end

  if love.keyboard.isDown("escape") then
    love.event.quit()
  elseif love.keyboard.isDown("f1") then
    paused = true;
    beaver.speed = 0
  elseif love.keyboard.isDown("f2") then
    paused = false;
    beaver.speed = 5
  elseif love.keyboard.isDown("f3") then
    showFPS = true
  elseif love.keyboard.isDown("f4") then
    showFPS = false
  elseif love.keyboard.isDown("d") then
    beaver.x = beaver.x + beaver.speed
  elseif love.keyboard.isDown("a") then
    beaver.x = beaver.x - beaver.speed
  elseif love.keyboard.isDown(" ") then
      end
  end
function love.keypressed( key )
  if key == "escape" then
    love.event.quit()
  elseif key == "f1" then
    paused = true;
  elseif key == "f2" then
    paused = false;
  elseif key == "f3" then
    showFPS = true
  elseif key == "f4" then
    showFPS = false
  elseif key == "d" then
    beaver.x = beaver.x + beaver.speed
  elseif key == "a" then
    beaver.x = beaver.x - beaver.speed
    end
    end
function love.draw()
  --if gamestate == "playing" then
      love.graphics.setColor(0, 255, 0)
      love.graphics.setPointSize(9)
      love.graphics.print('Press F1 for help.', 890, 50)

      if gamestate == "paused" then
      love.graphics.setColor(0, 0, 0)
        love.graphics.rectangle("fill", 0, 0, 2000, 2000)
      love.graphics.setColor(0, 255, 0)
        love.graphics.setPointSize(9)
        love.graphics.print('Press F2 to close help.', 890, 50)

      elseif showFPS == true then
      love.graphics.print("FPS: "..love.timer.getFPS(), 0, 50)
    elseif showHelp == false then
      end

      love.graphics.setColor(255, 255, 255)
      love.graphics.draw(beaver.image, beaver.x, beaver.y, 0, 1) --Draws the shape/item
    end