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I can't index my 4d array outside of my function. [?]
I created an array inside of a server script called map. I initialize it like so
maps = {}
game.Players.PlayerAdded:Connect(function(player)
for i = 1, 20 do
for k = 1, 20 do
maps[player.UserId] = {[i] ={[k] ={["occupied"] = "clear"}}}
print(maps[player.UserId][i][k]["occupied"]) --> "clear"
end
end
end)
I know the initialization works because the print() function outputs "clear". However, when I try to use this array outside of the PlayerAdded function, none of my indexes work. I use it in the same script like so
for i = x, x + object.SizeX.Value do
for i = y, y + object.SizeY.Value do
print(x, y)
if maps[player.UserId][x][y]["occupied"] ~= "clear" then
return;
end
end
end
The error is as follows: ServerScriptService.Main:27: attempt to index field '?' (a nil value)
Why on earth is this happening? Am I even setting the indexes to numbers? Help is always appreciated.
Thanks, Connor
1 answer
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The problem with your script is that every time line 6 executes, it completely wipes whatever was previously in the table by setting maps[player.UserId] to a brand new table. To fix this, you'll have to "set it as you go". I've done this below:
local Players = game:GetService("Players")
local Maps = {}
Players.PlayerAdded:Connect(function(Player)
Maps[Player.UserId] = {} -- Set the initial table to store values in
for i = 1, 20 do
Maps[Player.UserId][i] = {} -- Create a new table with index 'i' inside the initial table
for k = 1, 20 do
Maps[Player.UserId][i][k] = {occupied = "clear"} -- Add index 'k' to the table with index 'i'
end
end
end)
0
Thanks, that was the exact issue. connor12260311 383 — 6y