difficulty_handler.lua

local is_touch = require("is_touch")()

difficulty = {}

local touch_value_dictionary = {}

local desktop_value_dictionary = {}

local common_value_dictionary = {
    enemy_simple_score = { 2, 4, 8, 16, 32, 48, 64 },
    level_threshold = { 10, 45, 150, 300, 700, 1200, 1500 },
    enemy_simple_count = { 3, 4, 5, 5, 6, 7, 8 },
    asteroid_period = { 4, 3, 2.8, 2.6, 2.2, 2, 1.8 },
    heat_diffuser_upgrade_costs = { 100, 400, 800 },
    hull_upgrade_costs = { 350, 500, 1000 },
    heat_diffuser_resulting_speeds = { 0.3, 0.4, 0.5 },
    player_start_money = 0,
    asteroid_drop_credits = 40,
    health_player_ship_upgrade_0 = 1,
    health_player_ship_upgrade_1 = 2,
    health_player_ship_upgrade_2 = 3,
    labyrinth_bspline = {
        0, 0,
        10, 50,
        30, 70,
        75, 90,
        100, 100,
        120, 120 },
    labyrinth_base_speed = 100,
    labyrinth_time_score_divisor = 2.6
}

function difficulty.level_count()
    return #common_value_dictionary.level_threshold
end

function difficulty.get(value, level)
    --- use appropriate value table
    local dict
    if not (touch_value_dictionary[value] and desktop_value_dictionary[value]) then
        dict = common_value_dictionary
    elseif is_touch then
        dict = touch_value_dictionary
    else
        dict = desktop_value_dictionary
    end

    --- return level value for dict if level was given
    if level and type(dict[value]) == "table" then
        return dict[value][level]
    end

    if dict[value] == nil then
        print(value .. " not found in difficulty_handler.lua!")
    end

    --- return either single (non-level-dependent) value, or table of level values
    return dict[value]
end