Action onUse get a random item(chance configuration)

[averatec]

local config = {
	{ rate = 1, item = 2160, count = { min = 1, max = 2 }},
	{ rate = 2, item = 2152, count = { min = 1, max = 100 }},
	{ rate = 2, item = 2400, count = { const = 1 }}
}

local sumOfRate = 0

for i,v in ipairs(config) do
	sumOfRate = sumOfRate + v.rate
end

function onUse(cid, item, fromPosition, itemEx, toPosition)

	local rand = math.random(1, sumOfRate)

	local subSum = 0
	local exactItem = nil
	for i,v in ipairs(config) do
		if (subSum > rand) then
			if (i > 1) then
				exactItem = i-1
			end
			break
		end
		subSum = subSum + v.rate
		if (subSum >= rand) then
			exactItem = i
			break
		end
	end

	if (config[exactItem].count.const ~= nil) then
		doPlayerAddItem(cid, config[exactItem].item, config[exactItem].count.const)
	else
		doPlayerAddItem(cid, config[exactItem].item, math.random(config[exactItem].count.min, config[exactItem].count.max))
	end
	doRemoveItem(item.uid, 1)
end

Rate is a chance, sum of all rates is 5, then chance to get second item is 2/5=40%

@edit
typo in title, should be "... get an r..."

 

[adrielmandra]

Where put this code? '0'

 

[Zatacka]

Where put this code? '0'

in data/actions/action.xml:

<action itemid="3954" event="script" value="random item.lua"/>

then create file in data/actions/scripts/random item.lua and put this inside of it:

local config = {
	{ rate = 1, item = 2160, count = { min = 1, max = 2 }},
	{ rate = 2, item = 2152, count = { min = 1, max = 100 }},
	{ rate = 2, item = 2400, count = { const = 1 }}
}
 
local sumOfRate = 0
 
for i,v in ipairs(config) do
	sumOfRate = sumOfRate + v.rate
end
 
function onUse(cid, item, fromPosition, itemEx, toPosition)
 
	local rand = math.random(1, sumOfRate)
 
	local subSum = 0
	local exactItem = nil
	for i,v in ipairs(config) do
		if (subSum > rand) then
			if (i > 1) then
				exactItem = i-1
			end
			break
		end
		subSum = subSum + v.rate
		if (subSum >= rand) then
			exactItem = i
			break
		end
	end
 
	if (config[exactItem].count.const ~= nil) then
		doPlayerAddItem(cid, config[exactItem].item, config[exactItem].count.const)
	else
		doPlayerAddItem(cid, config[exactItem].item, math.random(config[exactItem].count.min, config[exactItem].count.max))
	end
	doRemoveItem(item.uid, 1)
end