[HELP] Changing spellbook.lua

[krithion2424]

I'm trying to change spellbook.lua to display spells by magic level instead of level. All spells work in spell.xml
I am working with theforgottenserver and heres what I have so far:

function onUse(cid, item, fromPosition, itemEx, toPosition)
local count = getPlayerInstantSpellCount(cid)
local text = ""
local t = {}
for i = 0, count - 1 do
local spell = getPlayerInstantSpellInfo(cid, i)
if spell.maglv ~= 0 then
if spell.manapercent > 0 then
spell.mana = spell.manapercent .. "%"
end
t[#t+1] = spell
end
end
table.sort(t, function(a, b) return a.maglv < b.maglv end)
local prevmaglv = -1
for i, spell in ipairs(t) do
local line = ""
if prevmaglv ~= spell.maglv then
if i ~= 1 then
line = "\n"
end
line = line .. "Spells for Magic Level " .. spell.maglv .. "\n"
prevmaglv = spell.maglv
end
text = text .. line .. " " .. spell.words .. " - " .. spell.name .. " : " .. spell.mana .. "\n"
end
Player(cid):showTextDialog(item.itemid, text)
return true
end

My error in command prompt is:

Lua Script Error: [Action Interface]
data/actions/scripts/other/spellbook.luanUse
data/actions/scripts/other/spellbook.lua:14: attempt to compare two nil values stack traceback:
[C]: in funtion '__lt'
data/actions/scripts/other/spellbook.lua:14: in function <data/actions/scripts/other/spellbook.lua:1>

 

[Limos]

Use mlevel instead of maglvl.

 

[Peonso]

function onUse(cid, item, frompos, item2, topos)
    local count = getPlayerInstantSpellCount(cid)
    local text = "House Spells\n"
    local t = {}

    for i = 0, count - 1 do
        local spell = getPlayerInstantSpellInfo(cid, i)
        if spell.mlevel ~= (nil) then
            if spell.manapercent > 0 then
                spell.mana = spell.manapercent .. "%"
            end

            table.insert(t, spell)
        end
    end
   
    table.sort(t, function(a, b) return a.mlevel < b.mlevel end)

    local prevLevel = -1
    for i, spell in ipairs(t) do
        local line = ""
        if prevLevel ~= spell.mlevel then
            if i ~= 1 then
                line = "\n"
            end

            line = line .. "Spells for Magic level " .. spell.mlevel .. "\n"
            prevLevel = spell.mlevel
        end
       
        text = text .. line .. "  " .. spell.words .. " - " .. spell.name .. " : " .. spell.mana .. "\n"
    end

    doShowTextDialog(cid, item.itemid, text)
    return TRUE
end

 

[krithion2424]

It worked you both are amazing! Only issue is house spells are combine with magic level 0 spells. Possibly because they both don't require a magic level? How do I have it so they are separate again? like:
House spells
alana sio
aleta sio
___
___
Magic level 0
light healing
light

 

[krithion2424]

Anyone know how to keep the house spells from combining with the magic level 0 spells?

 

[krithion2424]

Bump

 

[krithion2424]

No one knows how to change house spells so they don't register as ml 0?