Lua Tables LUA

[tuxico]

I'm trying all day to learn about "Tables" in LUA, but it seems complicated or does not have enough content on nested tables ... come on

I've created a table that does not only contain a Key and Value, it has several variables as well, as is common in any pokemon server or whatever ...

The Table

Table = {
["demon"] = 1515, Vida = 5000, Level = 80, and other variables...
["orc"] = 1516, Vida = 3000, Level = 40, and other variables...
["rat"] = 1517, Vida = 1000, Level = 20, and other variables...
}

I want to access the variables within the table, by name in [], which as far as I know, are Keys; Ie I want to get the values of a line, having only the ID, which in the monster would be 1515 ... already tried various forms and nothing, console ever return "Nil Value".
CODE EXAMPLE

   NovaPB:setAttribute(ITEM_ATTRIBUTE_DESCRIPTION, "It a Contain a " .. PokeLife .. ".")
    local vida = getLifeForPoke(Table, demon)
    player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, "Pokemon Life: " .. vida)

function getLifeForPoke(t, nomepokemon)
   for k,v in pairs(t) do
       if k == nomepokemon  then
       return k.Vida
       end
   end
end

 

[slaw]

You're separating the values with comma (,) - thats wrong, cause lua thinks its value after value. ["demon"] = 1515, Vida = 5000

If you want to make a nested table, you have to use {} one more time. Like this:

Table = {
["demon"] = {x = 1515, Vida = 5000, Level = 80}, and other variables...
["orc"] = {x = 1516, Vida = 3000, Level = 40}, and other variables...
["rat"] = {x = 1517, Vida = 1000, Level = 20, and other variables...
}

Now you can refer to this table like this:

print(Table.demon.x)
print(Table.orc.Level)

And so on.

Hope i helped!

 

[tuxico]

Attempt to index field 'demon'

The dot, access the table index, not the ["demon"] key ...

 

[slaw]

Right, you should use

Table["demon"].x
Table["demon"].Level
etc..

And your script should look like this:

function getLifeForPoke(t, nomepokemon)
    for k, v in pairs(t) do
        if k == nomepokemon  then
            return v.Vida
        end
    end
end

Notice i changed k.Vida to v.Vida

 

[tuxico]

Were you able to repeat this in TFS 1.3?
Here persist "Attempt"

 

[slaw]

Show me your code. There must be something wrong.

 

[tuxico]

Now i changed order of the table...

PokemonDB = {
[1515] = {nome = "demon", Vida = 5000, Level = 80},
[1516] = {nome = "orc", Vida = 2000, Level = 80},
[1517] = {nome = "rat", Vida = 1000, Level = 80}
}

function onUse(player, item, fromPosition, itemEx, toPosition, isHotkey)
   local corpse = itemEx
   if (string.find(corpse:getName(), "slain")) then
   toPosition:sendMagicEffect(100)
   corpse:remove()
   item:remove(1)
   ----------------------------------
   if math.random(0,100) >= 10 then
   local PokeName = string.gsub(corpse:getName(), "(slain)", "")
   player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, "Parabens! Voce capturou um Pokemon:" .. PokeName)
   local NovaPB = player:addItem(2122,1)
   NovaPB:setAttribute(ITEM_ATTRIBUTE_DESCRIPTION, "It a Contain a " .. PokeName .. ".")
   NovaPB:setCustomAttribute("Holding_ID", 1515)
   local id = NovaPB:getCustomAttribute("Holding_ID")
   --local nomepokemon = PegarNomeDaDB(PokemonDB, id)
   local HP_NewPoke = PokemonDB.Vida
   
   NovaPB:setCustomAttribute("HP", HP_NewPoke)
   local get = NovaPB:getCustomAttribute("HP")
   player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, "Vida: " .. get)
   
   else
   player:sendTextMessage(MESSAGE_STATUS_CONSOLE_BLUE, "Tente Novamente... ")
   return false
   end
end
end

 

[tuxico]

With PokemonDB.Vida, i received 5000, But I wanted to access this value by the key.

 

[slaw]

local HP_NewPoke = PokemonDB[id].Vida

like this? or i understand something wrong?

 

[tuxico]

lol... index a nill value

 

[tuxico]

Maybe i need um ipairs itherator?

function IndexForDB(t, id)
   for i,k in ipairs(t) do
   if k == id then
   return i
   end
   end
end

 

[slaw]

Yeah, ipairs is needed. But i didn't saw this part in your code.

 

[tuxico]

Because the question is here is to make litter access and not "how to get the index"

 

[tuxico]

I Solved... the attribute acessor [], is for KEY, nothing Index...
local PokemonDB = {

[1515] =
{holding = 1515,
Vida = 5000,
Level = 80
},
[20] =
{holding = 1515,
Vida = 1000,
Level = 80
},
[40] =
{holding = 1515,
Vida = 5000,
Level = 80
},
[60] =
{holding = 1515,
Vida = 9000,
Level = 80
},
[80] =
{holding = 1515,
Vida = 80000,
Level = 80
},
}
local HP_NewPoke = PokemonDB[1515].Vida

WORKS!

 

[tuxico]

The error was in double quotation marks, so I could see... thanks for help <3
I'm working on a TFS 1.3 pokemon ... I plan to release it to the community.