Mothback/data/scripts/ui.lua

function MenuDraw(menu)
  -- Set scale to 1
  love.graphics.scale(0.5,0.5)
  if menu == "pauseMenu" then
    -- Parameters
    local pauseWidth = 640
    local pauseHeight = 480
    local pauseX = (game.width/2)-(pauseWidth/2)
    local pauseY = (game.height/2)-(pauseHeight/2)
    local mouse_x, mouse_y = love.mouse.getPosition()
    -- Base items
    love.graphics.setColor(0,0,0,0.3)
    love.graphics.rectangle("fill", 0, 0, game.width, game.height)
    love.graphics.setColor(1,1,1,1)
    love.graphics.rectangle("fill", pauseX, pauseY, pauseWidth, pauseHeight)
  -- Reset scale
  end
  for _, element in pairs(UIElement) do
    element:Draw()
  end
  love.graphics.scale(2,2)
end

function MenuStep(menu)
  -- first get mouse
  local mouse_x, mouse_y = love.mouse.getPosition()
  for _, element in pairs(UIElement) do
    if element.type == "Button" then
      element:checkMouse(mouse_x, mouse_y)
    elseif element.type == "Dialog" then
      element:checkConfirm()
    end
  end
  if menu == 0 then
  elseif menu == "pauseMenu" then
    if PauseResume:getVariable() == true then
      MenuExit(menu,0)
      do_pause = false
    elseif PauseExit:getVariable() == true then
      love.event.quit()
    end
  else
    for name, dialogbox in pairs(dialogboxes) do
      if name == menu then
        if dialogbox.object:getVariable() then
          MenuExit(dialogbox.exit[1],dialogbox.exit[2])
        end
      end
    end
  end
end

function MenuExit(from,to)
  for _, element in pairs(UIElement) do
    element = nil
  end
  UIElement = {}
  if from == "pauseMenu" then
    PauseResume = nil
    PauseOptions = nil
    PauseExit = nil
  else
    for name, dialogbox in pairs(dialogboxes) do
      if name == menu then dialogbox.object = nil end
    end
  end
  menuPage = to or nil
end

function MenuInit(menu)
  local buttonStandard = {width = 200, height = 30, separation = 10}
  -- main menu
  if menu == "pauseMenu" then
    -- elements
    PauseResume = interfaceButton:New(
      game.width/2,
      game.height/2-buttonStandard.height-buttonStandard.separation,
      buttonStandard.width,
      buttonStandard.height,
      {false,true},
      1,
      {
        text = Locale.ui.pause_screen_resume,
        color = {0,0,0.5},
        color2 = {1,1,1}
      }
    )
    PauseOptions = interfaceButton:New(
      game.width/2,
      game.height/2,
      buttonStandard.width,
      buttonStandard.height,
      {false,true},
      1,
      {
        text = Locale.ui.pause_screen_options,
        color = {0,0,0.5},
        color2 = {1,1,1}
      }
    )
    PauseExit = interfaceButton:New(
      game.width/2,
      game.height/2+buttonStandard.height+buttonStandard.separation,
      buttonStandard.width,
      buttonStandard.height,
      {false,true},
      1,
      {
        text = Locale.ui.pause_screen_exit,
        color = {0,0,0.5},
        color2 = {1,1,1}
      }
    )
  else
    for name, dialogbox in pairs(dialogboxes) do
      if name == menu then dialogbox.object = interfaceDialog:New(dialogbox.style) end
    end
  end
end

UIElement = {}
require "data/scripts/ui/button"
require "data/scripts/ui/dialog"
require "data/scripts/ui/dialogboxes"