View source for Module:Barrows calculator

local p = {}

local coins = require('Module:Coins')._amount
local gePrice = require('Module:Exchange')._price
local paramTest = require('Module:Paramtest')
local yesNo = require('module:Yesno')

local brothersOrder = { 'Ahrim', 'Dharok', 'Guthan', 'Karil', 'Torag', 'Verac' }
local barrowsEquipment = {
	['Ahrim'] = {"Ahrim's hood", "Ahrim's robetop", "Ahrim's robeskirt", "Ahrim's staff"},
	['Dharok'] = {"Dharok's helm", "Dharok's platebody", "Dharok's platelegs", "Dharok's greataxe"},
	['Guthan'] = {"Guthan's helm", "Guthan's platebody", "Guthan's chainskirt", "Guthan's warspear"},
	['Karil'] = {"Karil's coif", "Karil's leathertop", "Karil's leatherskirt", "Karil's crossbow"},
	['Torag'] = {"Torag's helm", "Torag's platebody", "Torag's platelegs", "Torag's hammers"},
	['Verac'] = {"Verac's helm", "Verac's brassard", "Verac's plateskirt", "Verac's flail"}
}
local brothersCombat = {
	['Ahrim'] = 98,
	['Dharok'] = 115,
	['Guthan'] = 115,
	['Karil'] = 98,
	['Torag'] = 115,
	['Verac'] = 115
}

local cryptCombat = {
	['bloodworm'] = 52,
	['cryptRat'] = 43,
	['giantCryptRat'] = 76,
	['cryptSpider'] = 56,
	['giantCryptSpider'] = 79,
	['skeleton'] = 77
}

local lootBounds = {
	{item = "Coins", low = 1, high = 380, divisor = 0.5},
	{item = "Mind rune", low = 381, high = 505, divisor = 1.5, rune = true},
	{item = "Chaos rune", low = 506, high = 630, divisor = 4.5, rune = true},
	{item = "Death rune", low = 631, high = 755, divisor = 9, rune = true},
	{item = "Blood rune", low = 756, high = 880, divisor = 20, rune = true},
	{item = "Bolt rack", low = 881, high = 1005, divisor = 25},
	{item = "Loop half of key", low = 1006, high = 1008, divisor = 1000},
	{item = "Tooth half of key", low = 1009, high = 1011, divisor = 1000},
	{item = "Dragon med helm", low = 1012, high = 1012, divisor = 1000}
}

function p.main(frame)
	local args = frame:getParent().args
	mw.logObject(args)
	
	local toggleUnitKill, toggleMorytaniaHard = paramTest.defaults{ {args.toggleUnitKill, 'no' }, {args.toggleMorytaniaHard, 'no'} }
	toggleUnitKill = yesNo(toggleUnitKill)
	toggleMorytaniaHard = yesNo(toggleMorytaniaHard)
	
	local bloodworm, cryptRat, giantCryptRat, cryptSpider, giantCryptSpider, skeleton = paramTest.defaults{ {args.bloodworm, 0 }, {args.cryptRat, 0 }, {args.giantCryptRat, 0 }, {args.cryptSpider, 0 }, {args.giantCryptSpider, 0 }, {args.skeleton, 0 } }
	local cryptCombatLevels = paramTest.defaults{ {args.cryptCombatLevels, 0 } }

	local brothersKillList = {}
	local brothersCombatLevel = 0
	local cryptCombatLevel = 0
	local totalCombatLevel = 0
	for i, monster in ipairs(brothersOrder) do
		if(yesNo(args[monster])) then
			table.insert(brothersKillList, monster)
			brothersCombatLevel = brothersCombatLevel + brothersCombat[monster]
		end
	end
	if(toggleUnitKill) then
		cryptCombatLevel = cryptCombatLevel + (bloodworm * cryptCombat['bloodworm']) + (cryptRat * cryptCombat['cryptRat']) + (giantCryptRat * cryptCombat['giantCryptRat']) + (cryptSpider * cryptCombat['cryptSpider']) + (giantCryptSpider * cryptCombat['giantCryptSpider']) + (skeleton * cryptCombat['skeleton'])
	else
		cryptCombatLevel = cryptCombatLevels
	end
	
	local rewardPotential = math.min(1000, (brothersCombatLevel + cryptCombatLevel)) + (2 * #brothersKillList)
	local rewardRolls = 1 + #brothersKillList
	local denominator = 450 - (58 * #brothersKillList)
	local barrowsItemExpectation = (1.0 * rewardRolls) / (denominator * 4 * #brothersKillList)
	local totalEquipmentExpectation = 0.0
	local totalLootExpectation = 0.0

	--Each roll gives a 1/102 chance at a piece of Barrows equipment. There are 24 eligible pieces, so each is 1/2448 per roll. On average you will get 1/14.57 Barrows items per chest.
	--Barrots equipment table
	
	local rollsLine = 'Killing '
	if(rewardsRoll == 1) then
		rollsLine = rollsLine .. 'no brothers gives a total of ' .. rewardRolls .. ' roll for the [[Chest (Barrows)|Barrow chest]].'
	else
		for i, brother in ipairs(brothersKillList) do
			if(i > 1) then
				rollsLine = rollsLine .. ', '
			end
			rollsLine = rollsLine .. "'''" .. brother .. "'''"
		end
		rollsLine = rollsLine .. ' gives a total of ' .. rewardRolls .. ' rolls for the [[Chest (Barrows)|Barrow chest]].'
	end
	
	local lootLine = ''
	local lootLine = lootLine ..  "Killing an additional '''" .. cryptCombatLevel .. "''' combat levels worth of crypt monsters gives a total of '''" .. rewardPotential .. "''' reward points (" .. string.format('%.1f%%', (100 * rewardPotential) / 1012) .. " of maximum possible). That makes you eligible for the following rewards:\n"
	
	local lootTable = mw.html.create('table')
		lootTable:addClass('wikitable align-center-1')
			:tag('tr')
				:tag('th'):wikitext('Item'):attr('colspan', 2):done()
				:tag('th'):wikitext('Quantity per roll'):done()
				:tag('th'):wikitext('Price'):done()
				:tag('th'):wikitext('Chance per roll'):done()
				:tag('th'):wikitext('Expected per chest'):done()
				:tag('th'):wikitext('Expected value'):done()
	
	for _, loot in ipairs(lootBounds) do
		if(loot['low'] > rewardPotential) then
			break
		end
		high = math.min(loot['high'], rewardPotential)
		local lowQty = math.floor(loot['low'] / loot['divisor'])
		local highQty = math.floor( (high - 1) / loot['divisor'])
		local chancePerRoll = ((1 - (1 / denominator)) * (high - loot['low'] + 1)) / rewardPotential
		local runesMultiplier = 1.0
		if(toggleMorytaniaHard and (loot['rune'])) then
			runesMultiplier = 1.5
			lowQty = math.floor(lowQty * 1.5)
			highQty = math.floor(highQty * 1.5)
		end
		local expectedCount = 0.0
		for i = loot['low'], high, 1 do
			expectedCount = expectedCount + math.floor(runesMultiplier * math.floor(i / loot['divisor']))
		end
		expectedCount = ((1 - (1 / denominator)) * rewardRolls * expectedCount) / rewardPotential
		local qtyRange = lowQty
		if(lowQty ~= highQty) then
			qtyRange = lowQty .. '–' .. highQty
		end
		local item = loot['item']
		local price = 1
		if(item ~= "Coins") then
			price = gePrice(item)
		end
		totalLootExpectation = totalLootExpectation + (price * expectedCount)
		lootTable:tag('tr')
			:tag('td'):wikitext('[[File:' .. item .. '.png|link=' .. item .. ']]'):done()
			:tag('td'):wikitext('[[' .. item .. ']]'):done()
			:tag('td'):wikitext(qtyRange):done()
			:tag('td'):wikitext(coins(price)):done()
			:tag('td'):wikitext(string.format('%.3f%%', 100 * chancePerRoll)):done()
			:tag('td'):wikitext(string.format('%.2f', expectedCount)):done()
			:tag('td'):wikitext(coins(price * expectedCount)):done()
	end
	
	lootTable:tag('tr')
		:tag('th'):attr('colspan', 6):done()
		:tag('th'):wikitext(coins(totalLootExpectation)):done()
	
	lootLine = lootLine .. tostring(lootTable)
	
	barrowsLootLine = ''
	if(rewardRolls == 1) then 
		barrowsLootLine = barrowsLootLine .. "No Barrows brothers were killed, so there is no chance for [[Barrows equipment]]."
	else
		barrowsLootLine = barrowsLootLine .. "Each roll is a '''1/" .. denominator .. "''' chance to be one piece of [[Barrows equipment]]. There are '''" .. 4 * #brothersKillList .. "''' eligible pieces, therefore each is '''1/" .. denominator * 4 * #brothersKillList .. "''' per roll. On average you will get 1/" .. string.format('%.2f', denominator/rewardRolls) .. " Barrows items per chest.\n"
		
		local barrowsTable = mw.html.create('table')
		barrowsTable:addClass('wikitable align-center-1')
			:tag('tr')
				:tag('th'):wikitext('Item'):attr('colspan', 2):done()
				:tag('th'):wikitext('Price'):done()
				:tag('th'):wikitext('Expected per chest'):done()
				:tag('th'):wikitext('Expected value'):done()

		for i, brother in ipairs(brothersKillList) do
			for _, item in ipairs(barrowsEquipment[brother]) do
				local price = gePrice(item)
				totalEquipmentExpectation = totalEquipmentExpectation + (price * barrowsItemExpectation)
				barrowsTable:tag('tr')
					:tag('td'):wikitext('[[File:' .. item .. '.png|link=' .. item .. ']]'):done()
					:tag('td'):wikitext('[[' .. item .. ']]'):done()
					:tag('td'):wikitext(coins(price)):done()
					:tag('td'):wikitext(string.format('%.3f%%', 100 * barrowsItemExpectation)):done()	
					:tag('td'):wikitext(coins(price * barrowsItemExpectation)):done()
			end
		end
		
		barrowsTable:tag('tr')
			:tag('th'):attr('colspan', 4):done()
			:tag('th'):wikitext(coins(totalEquipmentExpectation)):done()

		barrowsLootLine = barrowsLootLine .. tostring(barrowsTable)
	end
	
	rollsLine = rollsLine .. " This chest has an expected value of '''" .. coins(totalLootExpectation + totalEquipmentExpectation) .. "'''."
	
	return rollsLine .. '\n\n' .. lootLine .. '\n' .. barrowsLootLine
end

return p
Description	What you type	What you get
Italic	''Italic text''	Italic text
Bold	'''Bold text'''	Bold text
Bold & italic	'''''Bold & italic text'''''	*Bold & italic text*