Module:Experience

This module implements {{Experience}}. It accepts no directly passed arguments, only parent arguments and is therefore recommended to not be invoked directly from templates.

local p = {}

local i18n = {
	error_exp_arg_not_a_number = "Module:Experience: %s is not a number", -- %1 = the description of the parameter
	error_exp_arg_too_small = "Module:Experience: %s is less than -32,768 (int16 lower limit)", -- %1 = the description of the parameter
	error_exp_arg_too_large = "Module:Experience: %s is greater than 32,767 (int16 upper limit)", -- %1 = the description of the parameter
	arg_desc_min_exp = "minimum experience", -- %1 = the description of the parameter
	arg_desc_max_exp = "maximum experience", -- %1 = the description of the parameter
	error_exp_min_gt_exp_max = "Module:Experience: %s (%d) > %s (%d)" -- %1 = min exp description, %2 = min exp, %3 = max exp description, %4 = max exp 
}

local EXP_VALUES = {
	{"Experience Orb Value -32768-2.png", 2},
	{"Experience Orb Value 3-6.png", 6},
	{"Experience Orb Value 7-16.png", 16},
	{"Experience Orb Value 17-36.png", 36},
	{"Experience Orb Value 37-72.png", 72},
	{"Experience Orb Value 73-148.png", 148},
	{"Experience Orb Value 149-306.png", 306},
	{"Experience Orb Value 307-616.png", 616},
	{"Experience Orb Value 617-1236.png", 1236},
	{"Experience Orb Value 1237-2476.png", 2476},
	{"Experience Orb Value 2477-32767.png", 32767}
}

local function validate_xp_arg(arg, desc)
	local arg_n = assert(tonumber(arg), i18n.error_exp_arg_not_a_number:format(desc))
	assert(arg_n >= -32768, i18n.error_exp_arg_too_small:format(desc))
	assert(arg_n <= 32767, i18n.error_exp_arg_too_large:format(desc))
	return arg_n
end

local function produce_exp_sprite(image, is_first)
	local sprite = mw.html.create('span')
	if is_first then
		sprite:addClass("animated-active")
	end
	sprite:css({
		["padding-left"] = "19px",
		["background-size"] = "16px 16px",
		["background-position"] = "left center",
		["background-repeat"] = "no-repeat",
		["background-image"] = mw.getCurrentFrame():expandTemplate({title="Template:FileUrl", args = {image}})
	})
	return sprite
end

local function produce_exp_anim(exp_min, exp_max)
	local wrap = mw.html.create("span"):addClass("animated")
	
	local lower_bound = 1
	local upper_bound = #EXP_VALUES
	for i, v in ipairs(EXP_VALUES) do
		if v[2] <= exp_min then
			lower_bound = i
		end
		if v[2] <= exp_max then
			upper_bound = i
		end	
	end
	
	local first = true
	for i = lower_bound, upper_bound do
		if first then
			wrap:node(produce_exp_sprite(EXP_VALUES[i][1], true))
			first = false
		else
			wrap:node(produce_exp_sprite(EXP_VALUES[i][1]))
		end
	end
	
	return tostring(wrap)
end

function p.main(exp_min, exp_max)
	local anim = produce_exp_anim(exp_min, exp_max)
	if exp_min == exp_max then
		return anim .. exp_min
	end
	return anim .. exp_min .. " - " .. exp_max
end

function p.exp_range(f)
	local args = require("Module:ProcessArgs").merge(true)
	local exp_min = validate_xp_arg(args[1], i18n.arg_desc_min_exp)
	local exp_max = validate_xp_arg(args[2], i18n.arg_desc_max_exp)
	
	assert(exp_max >= exp_min, i18n.error_exp_min_gt_exp_max:format(
		i18n.arg_desc_min_exp,
		exp_min,
		i18n.arg_desc_max_exp,
		exp_max
	))

	return p.main(exp_min, exp_max)
end

return p