I have been working on a Roblox game for about three weeks, and have created something that I am proud of, but I have one pretty significant error that I can't seem to work around. I want to make the game something that I can add to in the future, so I made a program to reward players with gold and exp points for killing NPC's. I also made a GUI bar to show the player their progress towards the next level. The problem I have is the gold will show up, but the xp will not. I have been banging my head against a brick wall as I have tried over seventy fixes, and the xp still will not show up on the bar and the player can't level.
My xp bar program looks like this:
--Player related variables--
local player = game.Players.LocalPlayer
local level = player:WaitForChild("Level")
local current = level:WaitForChild("Current")
local max = level:WaitForChild("Max")
--UI related variables--
local gui = script.Parent
local exterior = gui:WaitForChild("Exterior")
local label = exterior:WaitForChild("Label")
local exp = exterior:WaitForChild("Exp")
local bar = exterior:WaitForChild("Bar")
--Change stats upon join--
label.Text = "Level "..level.Value
exp.Text = current.Value.."/"..max.Value.." Exp"
bar.Size = UDim2.new(current.Value/max.Value, 0, 1, 0)
level.Changed:Connect(function(val, level)
label.Text = "Level "..level.Value
exp.Text = current.Value.."/"..max.Value.." Exp"
bar.Size = UDim2.new(current.Value/max.Value, 0, 1, 0)
wait(1)
end)
current.Changed:Connect(function(val)
exp.Text = current.Value.."/"..max.Value.." Exp"
bar.Size = UDim2.new(current.Value/max.Value, 0, 1, 0)
wait(1)
end)
and my reward program looks like this:
local Humanoid = script.Parent.Humanoid
local Experience = 10
function Dead()
local tag = Humanoid:FindFirstChild("creator")
if tag ~= nil then
if tag.Value ~= nil then
local leaderstats = tag.Value:FindFirstChild("leaderstats")
if leaderstats ~= nil then
leaderstats.Cash.Value = leaderstats.Cash.Value +50
workspace.ServerScriptService.leaderstats.Current:Connect(function(Experience)
if leaderstats.Current.Value ~= nil then
leaderstats.Current.Value = leaderstats.Current.Value + Experience
else leaderstats.Current.Value = 10
end
end)
wait(0.1)
script:Remove()
end
end
end
end
Humanoid.Died:Connect(Dead)
I also have a leaderstats code that looks like this:
local DataStore = game:GetService("DataStoreService"):GetDataStore("butthole")
game.Players.PlayerAdded:Connect(function(player)
local folder = Instance.new("Folder")
folder.Name = "leaderstats"
folder.Parent = player
local cash = Instance.new("IntValue")
cash.Name = "Cash"
cash.Value = 900
cash.Parent = folder
--start
local level = Instance.new("IntValue", player)
level.Name = "Level"
level.Value = 1
local exp = Instance.new("IntValue", level)
exp.Name = "Current"
exp.Value = 0
local maxExp = Instance.new("IntValue", level)
maxExp.Name = "Max"
maxExp.Value = 100
exp.Changed:Connect(function(val)
if exp.Value >= maxExp.Value then
level.Value = level.Value + 1
exp.Value = 0
maxExp.Value = maxExp.Value * 2.5
end
Something isn't talking to something else correctly, but I can't figure out where that might be. I'm not a pro developer, I'm just a guy trying to make a game.
Scroll to the bottom if you want to skip explanation
The main problem is this snippet from your reward program:
workspace.ServerScriptService.leaderstats.Current:Connect(function(Experience)
if leaderstats.Current.Value ~= nil then
leaderstats.Current.Value = leaderstats.Current.Value + Experience
else leaderstats.Current.Value = 10
end
end)
To access ServerScriptService, use game.ServerScriptService
leaderstats.Current is not an event, so event:Connect(func) will not work. Something like Current.Changed would be considered an event
According to your leaderstats code, Current is not inside leaderstats, but rather inside level: player.Level.Current
Although I pointed these things out, we won't be fixing 1 & 2 because they are unneccessary
The last error occurs in the xp bar script:
level.Changed:Connect(function(val, level)
label.Text = "Level "..level.Value
exp.Text = current.Value.."/"..max.Value.." Exp"
bar.Size = UDim2.new(current.Value/max.Value, 0, 1, 0)
end)
The problem is the first line of the snippet: the 2nd parameter, "level", does not exist.
The Changed event only has 1 parameter which is the new value after the change (in this context, is the new level). This means that val is the numerical value of your level.
Simply removing "level" from the parameters would fix this part
Reward Script:
local Humanoid = script.Parent.Humanoid
local Experience = 10
function Dead()
local tag = Humanoid:FindFirstChild("creator")
if tag ~= nil then
local player = tag.Value -- making variable makes it easier to understand
if player then
local leaderstats = player:FindFirstChild("leaderstats")
local level = player:FindFirstChild("Level") -- "Current" is inside Level
if leaderstats and level then
leaderstats.Cash.Value = leaderstats.Cash.Value +50
level.Current.Value = level.Current.Value +Experience --Simply add the EXP
script:Remove()
end
end
end
end
Humanoid.Died:Connect(Dead)
XP Bar Script:
--Player related variables--
local player = game.Players.LocalPlayer
local level = player:WaitForChild("Level")
local current = level:WaitForChild("Current")
local max = level:WaitForChild("Max")
--UI related variables--
local gui = script.Parent
local exterior = gui:WaitForChild("Exterior")
local label = exterior:WaitForChild("Label")
local exp = exterior:WaitForChild("Exp")
local bar = exterior:WaitForChild("Bar")
--Change stats upon join--
label.Text = "Level "..level.Value
exp.Text = current.Value.."/"..max.Value.." Exp"
bar.Size = UDim2.new(current.Value/max.Value, 0, 1, 0)
level.Changed:Connect(function(val)
label.Text = "Level "..level.Value
exp.Text = current.Value.."/"..max.Value.." Exp"
bar.Size = UDim2.new(current.Value/max.Value, 0, 1, 0)
end)
current.Changed:Connect(function(val)
exp.Text = current.Value.."/"..max.Value.." Exp"
bar.Size = UDim2.new(current.Value/max.Value, 0, 1, 0)
end)
When a person gains enough XP to level up, the XP is set to 0 and the level goes up by 1. However, that means all the extra XP went nowhere. I've changed the functionality to account for excess XP.
leaderstats script (replace your current exp.Changed function):
exp.Changed:Connect(function(val)
if exp.Value >= maxExp.Value then
local newLevel = level.Value
local newXP = exp.Value
local newMax = maxExp.Value
while newXP > newMax do
newLevel = newLevel + 1
newXP = newXP - newMax
newMax = newMax * 2.5
end
maxExp.Value = newMax
exp.Value = newXP
level.Value = newLevel
end
end)
Creating one function to update the UI makes it easier for later changes
XP Bar Script (2nd half):
--Change stats upon join--
function updateUI()
label.Text = "Level ".. level.Value
exp.Text = current.Value.."/"..max.Value.." Exp"
bar.Size = UDim2.new(current.Value/max.Value, 0, 1, 0)
end
updateUI()
level.Changed:Connect(updateUI)
current.Changed:Connect(updateUI)