Vehicle template: /main_menu.lua — code sample

Code

--[[
    Customized functions for controlling what happens for a particular loaded level.
    These classes should define any  of

    init(level)
    start(level)
    update(level, dt)
    shutdown(level)
    render(level)
]]--

local Util = require 'core/appkit/lua/util'
local SimpleProject = require 'core/appkit/lua/simple_project'
local DebugMenu = require 'core/appkit/lua/debug_menu'

Project.MainMenu = Project.MainMenu or {}
local MainMenu = Project.MainMenu

MainMenu.custom_listener = MainMenu.custom_listener or nil
MainMenu.action = nil

local start_time = 0

local function perform_action()
    -- Load empty level
    if MainMenu.action == "start" then
        MainMenu.shutdown()
        SimpleProject.change_level(Project.level_names.vehicle)
    -- Exit the program
    elseif MainMenu.action == "exit" then
        stingray.Application.quit()
    end
    MainMenu.action = nil
end

function MainMenu.start()
    if stingray.Window then
        stingray.Window.set_show_cursor(true)
    end

    if scaleform then
        scaleform.Stingray.load_project_and_scene("content/ui/simple_menu.s2d/simple_menu")
        --Register menu button mouse listener
        local custom_listener = MainMenu.custom_listener
        custom_listener = scaleform.EventListener.create(custom_listener, MainMenu.on_custom_event)
        MainMenu.custom_listener = custom_listener
        scaleform.EventListener.connect(custom_listener, scaleform.EventTypes.Custom)
    else
        local enter_game = function()
            MainMenu.action = "start"
            perform_action()
        end
        local exit = function()
            MainMenu.action = "exit"
            perform_action()
        end
        MainMenu.debug_menu = DebugMenu(SimpleProject.world, {
            title = "Main Menu",
            items = {
                {text="Enter Game", func=enter_game, target=nil},
                {text="Exit", func=exit, target=nil}
            }
        })
    end

    local level = SimpleProject.level
    start_time = stingray.World.time(SimpleProject.world)

    -- make sure camera is at correct location
    local camera_unit = SimpleProject.camera_unit
    local camera = stingray.Unit.camera(camera_unit, 1)
    stingray.Unit.set_local_pose(camera_unit, 1, stingray.Matrix4x4.identity())
    stingray.Camera.set_local_pose(camera, camera_unit, stingray.Matrix4x4.identity())

    Appkit.manage_level_object(level, MainMenu, nil)
end

function MainMenu.shutdown(object)
    if scaleform then
        scaleform.EventListener.disconnect(MainMenu.custom_listener)
        scaleform.Stingray.unload_project()
    end

    MainMenu.evt_listener_handle = nil
    Appkit.unmanage_level_object(SimpleProject.level, MainMenu, nil)
    if stingray.Window then
        stingray.Window.set_show_cursor(false)
    end
end

function MainMenu.on_custom_event(evt)
    if evt.name == "action" then
        if evt.data.message == "start" then
            MainMenu.action = "start"
        elseif evt.data.message == "exit" then
            MainMenu.action = "exit"
        end
    end
end

-- [[Main Menu custom functionality]]--
function MainMenu.update(object, dt)
    if MainMenu.debug_menu then
        MainMenu.debug_menu:update()
    end

    if MainMenu.action == nil  then
        local time = stingray.World.time(SimpleProject.world)
        local p = stingray.Application.platform()
        if time - start_time > 1 then
            if Appkit.Util.is_pc() then
                if stingray.Keyboard.pressed(stingray.Keyboard.button_id("1")) then
                    MainMenu.action = "start"
                elseif stingray.Keyboard.pressed(stingray.Keyboard.button_id("esc")) then
                    MainMenu.action = "exit"
                end
            elseif p == stingray.Application.XB1 or p == stingray.Application.PS4 then 
                if stingray.Pad1.pressed(stingray.Pad1.button_id(Appkit.Util.plat(nil, "a", nil, "cross"))) then
                    MainMenu.action = "start"
                elseif stingray.Pad1.pressed(stingray.Pad1.button_id(Appkit.Util.plat(nil, "b", nil, "circle"))) then
                    MainMenu.action = "exit"
                end
            end

        end
    end
    perform_action()
end

return MainMenu