Lua NPC random chance

[sick]

Hello ,

I'm looking for some help with adding random chance of success when giving X item and receiving Y item. For example there is just 30% chance to receive Y item when giving out X item.

function obsidian(cid, message, keywords, parameters, node)
    if(not npcHandler:isFocused(cid)) then
        return false
    end
        if getPlayerItemCount(cid,2157) >= 1 then
        if randomChance == 1 then
        if doPlayerRemoveItem(cid,2157,1) then
            npcHandler:say('Here is your item!', cid)
            doPlayerAddItem(cid,7764,1)
        end
        else
            npcHandler:say('You don\'t have enough items!', cid)
    end
end

Thank for help in advance!

 

[Nihilist]

I think you want something like this:
​

function obsidian(cid, message, keywords, parameters, node)
    if(not npcHandler:isFocused(cid)) then
        return false
    end

        local randomChance = 30

        if getPlayerItemCount(cid,2157) >= 1 then

            local random = math.random(1,100)
          
            if random <= randomChance then
                   if doPlayerRemoveItem(cid,2157,1) then
                    npcHandler:say('Here is your item!', cid)
                    doPlayerAddItem(cid,7764,1)
                end
            end
        else
            npcHandler:say('You don\'t have enough items!', cid)
        end
end