ROBLOX - Why is this fly script working only in the Studio? - lua

Question

I really need help..
I have this code for fly, as a backpack item:
Name = "Fly"
pi = 3.141592653589793238462643383279502884197163993751
a = 0
s = 0
ndist = 13
rs = 0.025
siz = Vector3.new(1, 1, 1)
form = 0
flow = {}
function CFC(P1,P2)
local Place0 = CFrame.new(P1.CFrame.x,P1.CFrame.y,P1.CFrame.z)
local Place1 = P2.Position
P1.Size = Vector3.new(P1.Size.x,P1.Size.y,(Place0.p - Place1).magnitude)
P1.CFrame = CFrame.new((Place0.p + Place1)/2,Place0.p)
end
function checktable(table, parentneeded)
local i
local t = {}
for i = 1, #table do
if table[i] ~= nil then
if string.lower(type(table[i])) == "userdata" then
if parentneeded == true then
if table[i].Parent ~= nil then
t[#t + 1] = table[i]
end
else
t[#t + 1] = table[i]
end
end
end
end
return t
end
if script.Parent.Name ~= Name then
User = game:service("Players").Nineza
HB = Instance.new("HopperBin")
HB.Name = Name
HB.Parent = User.StarterGear
script.Parent = HB
User.Character:BreakJoints()
end
speed = 50
script.Parent.Selected:connect(function(mar)
s = 1
torso = script.Parent.Parent.Parent.Character.Torso
LeftShoulder = torso["Left Shoulder"]
RightShoulder = torso["Right Shoulder"]
LeftHip = torso["Left Hip"]
RightHip = torso["Right Hip"]
human = script.Parent.Parent.Parent.Character.Humanoid
bv = Instance.new("BodyVelocity")
bv.maxForce = Vector3.new(0,math.huge,0)
bv.velocity = Vector3.new(0,0,0)
bv.Parent = torso
bg = Instance.new("BodyGyro")
bg.maxTorque = Vector3.new(0,0,0)
bg.Parent = torso
connection = mar.Button1Down:connect(function()
a = 1
bv.maxForce = Vector3.new(math.huge,math.huge,math.huge)
bg.maxTorque = Vector3.new(900000,900000,900000)
bg.cframe = CFrame.new(torso.Position,mar.hit.p) * CFrame.fromEulerAnglesXYZ(math.rad(-90),0,0)
bv.velocity = CFrame.new(torso.Position,mar.hit.p).lookVector * speed
moveconnect = mar.Move:connect(function()
bg.maxTorque = Vector3.new(900000,900000,900000)
bg.cframe = CFrame.new(torso.Position,mar.hit.p) * CFrame.fromEulerAnglesXYZ(math.rad(-90),0,0)
bv.velocity = CFrame.new(torso.Position,mar.hit.p).lookVector * speed
end)
upconnect = mar.Button1Up:connect(function()
a = 0
moveconnect:disconnect()
upconnect:disconnect()
bv.velocity = Vector3.new(0,0,0)
bv.maxForce = Vector3.new(0,math.huge,0)
torso.Velocity = Vector3.new(0,0,0)
bg.cframe = CFrame.new(torso.Position,torso.Position + Vector3.new(torso.CFrame.lookVector.x,0,torso.CFrame.lookVector.z))
wait(1)
end)
end)
while s == 1 do
wait(0.02)
flow = checktable(flow, true)
local i
for i = 1,#flow do
flow[i].Transparency = flow[i].Transparency + rs
if flow[i].Transparency >= 1 then flow[i]:remove() end
end
if a == 1 then
flow[#flow + 1] = Instance.new("Part")
local p = flow[#flow]
p.formFactor = form
p.Size = siz
p.Anchored = true
p.CanCollide = false
p.TopSurface = 0
p.BottomSurface = 0
if #flow - 1 > 0 then
local pr = flow[#flow - 1]
p.Position = torso.Position - torso.Velocity/ndist
CFC(p, pr)
else
p.CFrame = CFrame.new(torso.Position - torso.Velocity/ndist, torso.CFrame.lookVector)
end
p.BrickColor = BrickColor.new("Cyan")
p.Transparency = 1
p.Parent = torso
local marm = Instance.new("BlockMesh")
marm.Scale = Vector3.new(1.9, 0.9, 1.725)
marm.Parent = p
local amplitude
local frequency
amplitude = pi
desiredAngle = amplitude
RightShoulder.MaxVelocity = 0.4
LeftShoulder.MaxVelocity = 0.4
RightHip.MaxVelocity = pi/10
LeftHip.MaxVelocity = pi/10
RightShoulder.DesiredAngle = desiredAngle
LeftShoulder.DesiredAngle = -desiredAngle
RightHip.DesiredAngle = 0
LeftHip.DesiredAngle = 0
end
end
end)
script.Parent.Deselected:connect(function()
a = 0
s = 0
bv:remove()
bg:remove()
if connection ~= nil then
connection:disconnect()
end
if moveconnect ~= nil then
moveconnect:disconnect()
end
if upconnect ~= nil then
upconnect:disconnect()
end
while s == 0 do
wait()
if #flow > 0 then
flow = checktable(flow, true)
local i
for i = 1,#flow do
flow[i].Transparency = flow[i].Transparency + rs
if flow[i].Transparency >= 1 then flow[i]:remove() end
end
end
end
end)
while true do
wait()
if s == 1 then
return
end
end
script:remove()
The script is in a HopperBin Object in the game's StarterPack Folder.
Now if you try it on your own, you'll see that it will work, BUT if you publish the game, play it via ROBLOX(not the studio) and try to use the item, you won't fly.
Any ideas why?

Answer 1

It's been a long time since I haven't played ROBLOX, so my answer might be inaccurate.
First, you need to understand the difference between a Script and a Localscript. In a nutshell, a script runs server-side whereas a Localscript runs client-side. Your fly script is expected to run on a player's client, thus you have to use a Localscript.
Your regular script works in build-mode because scripts are run on your client, and thus are considered as Localscripts. When you publish your game and play it, your computer doesn't work as a server anymore, but as a client.
In addition to this, as you use a localscript, you may have to change the following line :
-- gets the client (local player) on which the script is running
User = Game:GetService("Players").LocalPlayer
Also, avoid relative paths such as script.Parent.Parent.Parent..... You want to get the client's torso, so just use your User variable as per : User.Character.Torso. Do the same for the character's Humanoid object.

Answer 2

I think it's because the time to load not existing try this at line1:
repeat wait() until game.Players.LocalPlayer.Character