table problem

[Wisin]

Hi all, i have a problem with a table, if someone can help please.

addEvent("returnCreatedCheckpoints",true) 
addEventHandler("returnCreatedCheckpoints",getRootElement(), 
function (checkpointsTable) 
checkpoints = {} 
I = 0 
for i,v in pairs(checkpointsTable) do 
I = I +1 
checkpoints[i] = {v[1], v[2], v[3]} 
  end 
end) 
  
addEvent("createNewCheckpoint",true) 
addEventHandler("createNewCheckpoint",getRootElement(), 
function (player,id) 
local x, y, z = checkpoints[tonumber(id)][1], checkpoints[tonumber(id)][2], checkpoints[tonumber(id)][3] -- This outputs: attempt to index field '?' (a nil value) 
triggerClientEvent(player,"createCheckpointsForPlayer",player,x,y,z,id) 
end) 

So my problem is, when do triggerEvent("createNewCheckpoint",player,player,1) it outputs that error.

[Aibo]

what is the point of I = 0 and I = I +1? and where is the checkpointsTable created?

and if your table has ordered indexes, you should use ipairs(), not pairs().

[Wisin]

I = I +1 is to make a total checkpoint count.

And the table is sent from the client side, i dont know if i must use ipairs or pairs.

[Aibo]

so how many you got in your total checkpoint count?

[Wisin]

that is fine, the checkpoints gets inserted in the table because i can do:

addEvent("returnCreatedCheckpoints",true) 
addEventHandler("returnCreatedCheckpoints",getRootElement(), 
function (checkpointsTable) 
checkpoints = {} 
I = 0 
for i,v in pairs(checkpointsTable) do 
I = I +1 
checkpoints[i] = {v[1], v[2], v[3]} 
local x, y, z = checkpoints[i][1], checkpoints[i][2], checkpoints[i][3] 
outputDebugString(tostring(x)) 
outputDebugString(tostring(y)) 
outputDebugString(tostring(z)) 
  end 
end) 

and will work fine

Edited June 10, 2011 by Guest

[Aibo]

how can this work fine if "id" is (probably) nil?

im sorry, but this is confusing. your event "returnCreatedCheckpoints" puts data from some table to another table.

then, event "createNewCheckpoint" doesn't add any new data, but takes some from the table created by "returnCreatedCheckpoints".

and where is "createNewCheckpoint" event is triggered? is "id" passed to it correctly? nvm, found that.

[Wisin]

Sorry, i forgot to change tonumber(id), and yes id is passed, i use triggerEvent to pass it.

[Aibo]

why dont you do something like:

  
addEvent("createNewCheckpoint",true) 
addEventHandler("createNewCheckpoint",getRootElement(), 
function (player,id) 
  outputDebugString(tostring(id)) -- and see what is there? 
  local x, y, z = checkpoints[tonumber(id)][1], checkpoints[tonumber(id)][2], checkpoints[tonumber(id)][3]  
  triggerClientEvent(player,"createCheckpointsForPlayer",player,x,y,z,id) 
end) 
  

[Wisin]

because i already did that, and it says what it should say.

[Aibo]

problem is in this line then:

checkpoints = {v[1], v[2], v[3]}

this syntax doesn't put any values to checkpoints. probably because [ and ] used to denote a numeric index in a table, like {[1] = 1, [2] = "two"}

you can try checkpoints = v, or copy this way

  
local x,y,z = v[1], v[2], v[3] 
checkpoints[i] = { x, y, z } 
  
-- or 
checkpoints[i] = { unpack(v) } 
  

[Wisin]

it doesnt work still

same error as always...

[Wisin]

Does someone know how to fix this problem?