Re-ordering an LUA table

[Leo32]

Hey Guys,

I'm getting a little stuck here;
What I'm after seems simple enough but I'm not familiar enough with tables to get my head around it:

    for _, v in pairs(self:getLoot()) do
       local itemList = self:createLootItem(v, modifier)
       if itemList then
         for _, item in ipairs(itemList) do
           print(item:getName()) -- this is the data I would like to re-order.
           if item:isContainer() then
             local lootContainer = self:createLootContainer(item, v, modifier)
             if lootContainer then
               corpse:addItemEx(item)
             end
           else
             corpse:addItemEx(item, 1)
           end
         end
       end
     end

Example output of print line above:

gold coin
bone
mace
viking helmet
pelvis bone

I want to order this in the opposite way.

The end result is:
I want this to execute from the bottom up.

corpse:addItemEx(item, 1)

But I can't figure out the logical way or re-ordering the table data to do it.

EDIT: posted this in the wrong forum, derp.

 

[Codex NG]

Using a for loop you can easily reverse the order

local t = {
'gold coin',
'bone',
'mace',
'viking helmet',
'pelvis bone'
}
-- using the size of the table as i's base value, 1 the value to meet and then the step -1 to count backwards
for i = #t, 1, -1 do
    print(t[i])
end

-- output
pelvis bone
viking helmet
mace
bone
gold coin

So you could re-write your code like this

    for _, v in pairs(self:getLoot()) do
       local itemList = self:createLootItem(v, modifier)
       if itemList then
         for i = #itemList, 1, -1 do
           print(itemList[i]:getName())
           if itemList[i]:isContainer() then
             local lootContainer = self:createLootContainer(itemList[i], v, modifier)
             if lootContainer then
               corpse:addItemEx(itemList[i])
             end
           else
             corpse:addItemEx(itemList[i], 1)
           end
         end
       end
     end

 

[Leo32]

Using a for loop you can easily reverse the order

local t = {
'gold coin',
'bone',
'mace',
'viking helmet',
'pelvis bone'
}
-- using the size of the table as i's base value, 1 the value to meet and then the step -1 to count backwards
for i = #t, 1, -1 do
    print(t[i])
end

-- output
pelvis bone
viking helmet
mace
bone
gold coin

So you could re-write your code like this

    for _, v in pairs(self:getLoot()) do
       local itemList = self:createLootItem(v, modifier)
       if itemList then
         for i = #itemList, 1, -1 do
           print(itemList[i]:getName())
           if itemList[i]:isContainer() then
             local lootContainer = self:createLootContainer(itemList[i], v, modifier)
             if lootContainer then
               corpse:addItemEx(itemList[i])
             end
           else
             corpse:addItemEx(itemList[i], 1)
           end
         end
       end
     end

Legend.
Code above wasn't working as it was effectively getting the table value on every loop(?), which was 1 during the loop(?).
Forgive the ignorance on my part.

But here is the resulting code I've put together that works like a dream.

    itemIndex = {}
     for _, v in pairs(self:getLoot()) do
       itemList = self:createLootItem(v, modifier)
       if itemList then
         for _, item in ipairs(itemList) do
           table.insert(itemIndex, item)
         end
       end
     end
     for i = #itemIndex, 1, -1 do
       print(itemIndex[i]:getName())
       if itemIndex[i]:isContainer() then
         local lootContainer = self:createLootContainer(itemIndex[i], v, modifier)
         if lootContainer then
           corpse:addItemEx(itemIndex[i])
         end
         else
           corpse:addItemEx(itemIndex[i], 1)
       end
     end

Gonna use this to do some more reading on the functions used.
Didn't even realize # was LUA's length operator.