How to prevent indexing a nil value?
This script works in the sense that it makes all the right instances, but when I change the value of EXP to, say, 100, my player doesn't level up to level 2.
game.Players.PlayerAdded:connect(function(plr)
local stats = Instance.new('IntValue', plr)
stats.Name = 'leaderstats'
experience = Instance.new('IntValue', stats)
experience.Name = 'EXP'
experience.Value = 0
level = Instance.new('IntValue',stats)
level.Name = 'Level'
level.Value = 0
end)
function level()
local required=(level.Value*100)
if experience.Value>=required then
level.Value=level.Value+1
experience.Value=experience.Value-required
level()
wait(.01)
end
end
experience.Changed:connect(level)
I get the error Workspace.Script:22: attempt to index global 'experience' (a nil value) This means that somewhere on line 22 I went wrong. I don't see how, because experience is defined correctly and the fuction's name is level. Any help is appreciated, thank you for reading.
2 answers
Simple answer.The variable for the connection line in line has to be difined globally. To fix this, you'd put the level() function within the (function(plyr) . It would look something like this:
game.Players.PlayerAdded:connect(function(plr)
local stats = Instance.new('IntValue', plr)
stats.Name = 'leaderstats'
experience = Instance.new('IntValue', stats)
experience.Name = 'EXP'
experience.Value = 0
level = Instance.new('IntValue',stats)
level.Name = 'Level'
level.Value = 0
experience.Changed:connect(function()
level()
function level()
local required=(level.Value*100)
if experience.Value>=required then
level.Value=level.Value+1
experience.Value=experience.Value-required
wait(.01)
level()
end
end
end)
end)
0
I would try getting the Value inside the player with a separate variable (Outside of the player added event). You may do this by looping through each player and checking to see if it has changed. Or if it's not a server script then don't use the loop and use local player instead!
for _, player in pairs (game.Players:GetChildren()) do
local Stats = player:FindFirstChild'leaderstats'
if Stats then
local Experience = Stats:FindFirstChild'EXP'
if Experience then
Experience.Changed:connect(level)
end
end
end
OR if not a server script.
local player = game:GetService'Players'.LocalPlayer
local Stats = player:FindFirstChild'leaderstats'
if Stats then
local Experience = Stats:FindFirstChild'EXP'
if Experience then
Experience.Changed:connect(level)
end
end
ProTip: If you are adding values to a player then I would use the starter player service for that. Anything inside that will be copied to the player when they join.
Hope this helps! ;)
0