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Lua onDeath error

Fortera Global

Fortera Global

Intermediate OT User
Joined
Nov 20, 2015
Messages
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Solutions
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why?

Lua: 
Lua Script Error: [Main Interface]
in a timer event called from:
data/creaturescripts/scripts/Feyrist/Feyrist7.lua:onDeath
attempt to index a nil value
stack traceback:
    [C]: at 0x00571f00
    [C]: in function 'createMonster'
    data/creaturescripts/scripts/Feyrist/Feyrist7.lua:38: in function <data/creaturescripts/scripts/Feyrist/Feyrist7.lua:37>

script:

Lua: 
local function criarFeyrist(PositionBorn)
    local monstro = Game.createMonster("Faun", PositionBorn, false, true)
    if monstro then
    monstro:setSpawnPoint(PositionBorn)
    monstro:registerEvent("Feyrist7")
    monstro:registerEvent("FeyristThink")
    end
end

local function criarFeyrist2(PositionBorn)
    local monstro = Game.createMonster("Pooka", PositionBorn, false, true)
    if monstro then
    monstro:setSpawnPoint(PositionBorn)
    monstro:registerEvent("Feyrist7")
    monstro:registerEvent("FeyristThink")
    end
end

local function criarFeyrist3(PositionBorn)
    local monstro = Game.createMonster("Nymph", PositionBorn, false, true)
    if monstro then
    monstro:setSpawnPoint(PositionBorn)
    monstro:registerEvent("Feyrist7")
    monstro:registerEvent("FeyristThink")
    end
end

local function criarFeyrist4(PositionBorn)
    local monstro = Game.createMonster("Dark Faun", PositionBorn, false, true)
    if monstro then
    monstro:setSpawnPoint(PositionBorn)
    monstro:registerEvent("Feyrist7")
    monstro:registerEvent("FeyristThink")
    end
end

local function criarFeyrist5(PositionBorn)
    local monstro = Game.createMonster("Twisted Pooka", PositionBorn, false, true)
    if monstro then
    monstro:setSpawnPoint(PositionBorn)
    monstro:registerEvent("Feyrist7")
    monstro:registerEvent("FeyristThink")
    end
end

local function criarFeyrist6(PositionBorn)
    local monstro = Game.createMonster("Boogy", PositionBorn, false, true)
    if monstro then
    monstro:setSpawnPoint(PositionBorn)
    monstro:registerEvent("Feyrist7")
    monstro:registerEvent("FeyristThink")
    end
end

function onDeath(creature)
    local targetMonster = creature:getMonster()
    if not targetMonster then
        return true
    end
    --local PositionBorn = targetMonster:getSpawnPoint()   
    -- se for dia
    if isTwilight() or isDay() then
        if targetMonster:getName():lower() == 'faun' or targetMonster:getName():lower() == 'dark faun' then
            local PositionBorn = targetMonster:getSpawnPoint()
            addEvent(criarFeyrist, 100 * 1000, PositionBorn) -- addEvent
           
        elseif targetMonster:getName():lower() == 'pooka' or targetMonster:getName():lower() == 'twisted pooka' then
            local PositionBorn = targetMonster:getSpawnPoint()
            addEvent(criarFeyrist2, 100 * 1000, PositionBorn) -- addEvent
           
        elseif targetMonster:getName():lower() == 'nymph' or targetMonster:getName():lower() == 'boogy' then
            local PositionBorn = targetMonster:getSpawnPoint()
            addEvent(criarFeyrist3, 100 * 1000, PositionBorn) -- addEvent
        end   
    else
    -- se for noite
        if targetMonster:getName():lower() == 'faun' or targetMonster:getName():lower() == 'dark faun' then
            local PositionBorn = targetMonster:getSpawnPoint()
            addEvent(criarFeyrist4, 100 * 1000, PositionBorn) -- addEvent
           
        elseif targetMonster:getName():lower() == 'pooka' or targetMonster:getName():lower() == 'twisted pooka' then
            local PositionBorn = targetMonster:getSpawnPoint()
            addEvent(criarFeyrist5, 100 * 1000, PositionBorn) -- addEvent
           
        elseif targetMonster:getName():lower() == 'nymph' or targetMonster:getName():lower() == 'boogy' then
            local PositionBorn = targetMonster:getSpawnPoint()   
            addEvent(criarFeyrist6, 100 * 1000, PositionBorn) -- addEvent
           
        end
    end
    return true
end
 
Solution
president vankk
Create a local function and call.

Lua: 
local config = {
    nightTime = {
        monsters = {
           ["twisted pooka"] = {toMonster = 'Twisted Pooka'},
            ["dark faun"] = {toMonster = 'Faun'},
        },
    },
    daylight = {
        monsters = {
             ["pooka"] = {toMonster = 'Twisted Pooka'},
            ["faun"] = {toMonster = 'Dark Faun'},
        },
    },
}

local function spawnCreature(monsterName, position)
    if monsterName ~= nil and position ~= nil then
        local monster = Game.createMonster(monsterName, position, false, true)
        if monster then
            monster:setSpawnPoint(position)
            monster:registerEvent("Feyrist7")
            monster:registerEvent("FeyristThink")
        end...
Sort by date Sort by votes
God Of Pain said:
ippp
Click to expand...
print PositionBorn before it's used
Game.createMonster will give you an error saying "attempt to index a nil value" when you use an invalid position as its spawnpoint
it's likely that targetMonster:getSpawnPoint() is returning nil, so in the addEvent you're also passing nil which leads to that error
 
Upvote 0 Downvote
malucooo said:
Tem que declarar uma variavel para receber o monstro
Ex.: local funtion criarferyrist(position, creature)
Click to expand...

but its declared
Lua: 
(PositionBorn)

Vulcan_ said:
print PositionBorn before it's used
Game.createMonster will give you an error saying "attempt to index a nil value" when you use an invalid position as its spawnpoint
it's likely that targetMonster:getSpawnPoint() is returning nil, so in the addEvent you're also passing nil which leads to that error
Click to expand...

Its seems PositionBorn is nil, but why its nil? if the monster was spawned before?
 
Upvote 0 Downvote
God Of Pain said:
but its declared
Lua: 
(PositionBorn)



Its seems PositionBorn is nil, but why its nil? if the monster was spawned before?
Click to expand...
i have no idea, getSpawnPoint is part of your engine so i don't know what the code looks like
i'd assume the only way it would be nil is if the monster was spawned through Game.createMonster instead of a spawn
 
Upvote 0 Downvote
Vulcan_ said:
i have no idea, getSpawnPoint is part of your engine so i don't know what the code looks like
i'd assume the only way it would be nil is if the monster was spawned through Game.createMonster instead of a spawn
Click to expand...

yes we created with Game.createMonster, but if the monster was created, how...? its wired

Lua: 
local monsterStartPos = {}

function Monster.getStartPos(self)
    return monsterStartPos[self:getId()] or nil
end

function Monster.setStartPos(self, position)
    monsterStartPos[self:getId()] = position or self:getPosition()
end

local spawnPoints = {}

function Monster.setSpawnPoint(self, spawnPoint)
    spawnPoints[self:getId()] = spawnPoint or self:getPosition()
end

function Monster.getSpawnPoint(self)
    return spawnPoints[self:getId()] or nil
end
 
Upvote 0 Downvote
Lua: 
local config = {
    nightTime = {
        monsters = {
           ["twisted pooka"] = {toMonster = 'Twisted Pooka'},
            ["dark faun"] = {toMonster = 'Faun'},
        },
    },

    daylight = {
        monsters = {
             ["pooka"] = {toMonster = 'Twisted Pooka'},
            ["faun"] = {toMonster = 'Dark Faun'},
        },
    },
}

function onDeath(creature)
    local targetMonster = creature:getMonster()
    if not targetMonster then
        return true
    end

    local monsterTable = nil
    if isTwilight() or isDay() then
        monsterTable = config.daylight.monsters[targetMonster:getName():lower()]
    else
        monsterTable = config.nightTime.monsters[targetMonster:getName():lower()]
    end

    if monsterTable ~= nil and type(monsterTable) == "table" then
        local monsterName = monsterTable.toMonster
        local position = targetMonster:getSpawnPoint()
        if not position then
            print(string.format("[Warning] - Cannot create %s. The position is pointed to nil.", monsterName))
            return true
        end

        local monster = Game.createMonster(monsterName, position, false, true)
        if monster then
            monster:setSpawnPoint(position)
            monster:registerEvent("Feyrist7")
            monster:registerEvent("FeyristThink")
        end
    end
end
 
Last edited:
Upvote 0 Downvote
president vankk said:
Lua: 
local config = {
    nightTime = {
        monsters = {
           ["twisted pooka"] = {toMonster = 'Twisted Pooka'},
            ["dark faun"] = {toMonster = 'Faun'},
        },
    },

    daylight = {
        monsters = {
             ["pooka"] = {toMonster = 'Twisted Pooka'},
            ["faun"] = {toMonster = 'Dark Faun'},
        },
    },
}

function onDeath(creature)
    local targetMonster = creature:getMonster()
    if not targetMonster then
        return true
    end

    local monsterTable = nil
    if isTwilight() or isDay() then
        monsterTable = config.daylight.monsters[targetMonster:getName():lower()]
    else
        monsterTable = config.nightTime.monsters[targetMonster:getName():lower()]
    end

    if monsterTable ~= nil and type(monsterTable) == "table" then
        local monsterName = monsterTable.toMonster
        local position = targetMonster:getSpawnPoint()
        if not position then
            print(string.format("[Warning] - Cannot create %s. The position is pointed to nil.", monsterName))
            return true
        end

        local monster = Game.createMonster(monsterName, position, false, true)
        if monster then
            monster:setSpawnPoint(position)
            monster:registerEvent("Feyrist7")
            monster:registerEvent("FeyristThink")
        end
    end
end
Click to expand...

thanks man!
but we need addEvent, cuz if the monsters death, he can't spawn at the same time, understand?
u put a check if the position exists, so it will not appear error but this will not spawn the monster too
 
Last edited by a moderator:
Upvote 0 Downvote
Create a local function and call.

Lua: 
local config = {
    nightTime = {
        monsters = {
           ["twisted pooka"] = {toMonster = 'Twisted Pooka'},
            ["dark faun"] = {toMonster = 'Faun'},
        },
    },
    daylight = {
        monsters = {
             ["pooka"] = {toMonster = 'Twisted Pooka'},
            ["faun"] = {toMonster = 'Dark Faun'},
        },
    },
}

local function spawnCreature(monsterName, position)
    if monsterName ~= nil and position ~= nil then
        local monster = Game.createMonster(monsterName, position, false, true)
        if monster then
            monster:setSpawnPoint(position)
            monster:registerEvent("Feyrist7")
            monster:registerEvent("FeyristThink")
        end
    end
end
function onDeath(creature)
    local targetMonster = creature:getMonster()
    if not targetMonster then
        return true
    end
    local monsterTable = nil
    if isTwilight() or isDay() then
        monsterTable = config.daylight.monsters[targetMonster:getName():lower()]
    else
        monsterTable = config.nightTime.monsters[targetMonster:getName():lower()]
    end
    if monsterTable ~= nil and type(monsterTable) == "table" then
        local monsterName = monsterTable.toMonster
        local position = targetMonster:getSpawnPoint()
        if not position then
            print(string.format("[Warning] - Cannot create %s. The position is pointed to nil.", monsterName))
            return true
        end
       
        addEvent(spawnCreature, 100 * 1000, monsterName, position)
    end
end
 
Upvote 0 Downvote
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