Lua Learning spells

[Maxilos1221]

Hi. I have trouble with npc learning spells.

My lua script responsible for learning:

    if player:getLevel() >= spells[npcHandler.topic[cid]].level then
            if player:hasLearnedInstantSpell(spells[npcHandler.topic[cid]].spell_name) == false then
                if player:getMoney() >= spells[npcHandler.topic[cid]].price then
                    player:removeMoney(spells[npcHandler.topic[cid]].price)
                    npcHandler:say("Here you are. Look in your spellbook for the pronunciation of this spell.", cid)
                    player:learnInstantSpell(spells[npcHandler.topic[cid]].spell_name)
                    player:getPosition():sendMagicEffect(CONST_ME_MAGIC_BLUE)
                    npcHandler.topic[cid] = 0
                else
                    npcHandler:say("Oh. You do not have enough money.", cid)
                    npcHandler.topic[cid] = 0
                end   
            else
                npcHandler:say("You already know how to cast this spell.", cid)
                npcHandler.topic[cid] = 0
            end
        else
            npcHandler:say("You must be level " .. spells[npcHandler.topic[cid]].level .. " to learn this spell.", cid);
            npcHandler.topic[cid] = 0
        end

Here is array of spells:

local spells = {
        [1] = {spell_name = "Destroy Field Rune", price = 700, level = 17, number = 1},
        [2] = {spell_name = "Holy Missile Rune", pice = 1600, level = 27, number = 2},
        [3] = {spell_name = "Disintegrate Rune", price = 900, level = 21, number = 3},
        [4] = {spell_name = "Light Healing", price = 0, level = 8, number = 4},
        [5] = {spell_name = "Intense Healing", price = 350, level = 20, number = 5},
        [6] = {spell_name = "Divine Healing", price = 3000, level = 35, number = 6},
        [7] = {spell_name = "Cure Poison", price = 150, level = 10, number = 7},
        [8] = {spell_name = "Cure Curse", price = 6000, level = 80, number = 8},
        [9] = {spell_name = "Recovery", price = 4000, level = 50, number = 9},
        [10] = {spell_name = "Salvation", price = 8000, level = 60, number = 10},
        [11] = {spell_name = "Intense Recovery", price = 10000, level = 100, number = 11},
        [12] = {spell_name = "Conjure Arrow", price = 450, level = 13, number = 12},
        [13] = {spell_name = "Enchant Spear", price = 2000, level = 45, number = 13},
        [14] = {spell_name = "Conjure Explosive Arrow", price = 1000, level = 25, number = 14},
        [15] = {spell_name = "Ethereal Spear", price = 1100, level = 23, number = 15},
        [16] = {spell_name = "Divine Missile", price = 1800, level = 40, number = 16},
        [17] = {spell_name = "Divine Caldera", price = 3000, level = 50, number = 17},
        [18] = {spell_name = "Holy Flash", price = 7500, level = 70, number = 18},
        [19] = {spell_name = "Strong Ethereal Spear", price = 10000, level = 90, price = 19},
        [20] = {spell_name = "Magic Rope", price = 200, level = 9, number = 20},
        [21] = {spell_name = "Levitate", price = 500, level = 12, number = 21},
        [22] = {spell_name = "Haste", price = 600, level = 14, number = 22},
        [23] = {spell_name = "Find Person", price = 80, level = 8, number = 23},
        [24] = {spell_name = "Light", price = 100, level = 8, number = 24},
        [25] = {spell_name = "Cancel Invisibility", price = 1600, level = 26, number = 25},
        [26] = {spell_name = "Great Light", price = 500, level = 13, number = 26}
    }

When I try learn any spell i've got this error in console:

Lua Script Error: [Npc interface]
data/npc/scripts/Helor.lua:onCreatureSay
data/npc/scripts/Helor.lua:84: attempt to call method 'hasLearnedInstantSpell' (a nil value)
stack traceback:
        [C]: in function 'hasLearnedInstantSpell'
        data/npc/scripts/Helor.lua:84: in function 'callback'
        data/npc/lib/npcsystem/npchandler.lua:430: in function 'onCreatureSay'
        data/npc/scripts/Helor.lua:7: in function <data/npc/scripts/Helor.lua:7>

Line 84 in Helor.lua is:

if player:hasLearnedInstantSpell(spells[npcHandler.topic[cid]].spell_name) == false then

Someone know why i got this error? I'm using TFS 1.1 on linux

 

[2Rec]

Change

player:hasLearnedInstantSpell(spells[npcHandler.topic[cid]].spell_name)

to

player:hasLearnedSpell(spells[npcHandler.topic[cid]].spell_name)

 

[Maxilos1221]

Thanks bro. Its works, but it strange because I don't have that function in player.cpp...
But it does not matter. So it works so I will not tread subject.

 

[2Rec]

Thanks bro. Its works, but it strange because I don't have that function in player.cpp...
But it does not matter. So it works so I will not tread subject.

Oh, it matters. If you ever run into similar error, you can look for a function in a luascript.cpp. (instead of player.cpp as you mentioned)
Or look for a list on a forum, like this one:
LUA Functions List [TFS 1.1] Updated: 09/08/2015