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Why does this fly script turn speed to nan?

Asked by

stepatron 103

5 years ago

Edited 5 years ago

I built upon a preexisting script (i forgot who) to resemble the one in Iron Man Simulator. Unfortunately when stopping/slowing down, the player's speed and position become nan.

01--// Services
02local UserInputService = game:GetService("UserInputService")
03local RunService = game:GetService("RunService")
04local Players = game:GetService("Players")
05 
06--// Service Objects
07local LocalPlayer = Players.LocalPlayer
08local Character = LocalPlayer.Character or LocalPlayer.CharacterAdded:Wait()
09local HumanoidRootPart = Character:WaitForChild("HumanoidRootPart")
10local CurrentCamera = workspace.CurrentCamera
11 
12--// Objects
13local BodyVelocity = Instance.new("BodyVelocity")
14BodyVelocity.MaxForce = Vector3.new(math.huge, math.huge, math.huge)
15BodyVelocity.Velocity = Vector3.new(0,0,0)
16local BodyGyro = Instance.new("BodyGyro")
17BodyGyro.MaxTorque = Vector3.new(math.huge, math.huge, math.huge)
18BodyGyro.D = 100
19BodyGyro.P = 20000
20BodyGyro.CFrame = HumanoidRootPart.CFrame
21local xDelta = 0
22local zDelta = 0
23local maxSpeed = 200 -- Studs/Second
24local speed = 0
25 
26BodyVelocity.Parent = HumanoidRootPart
27BodyGyro.Parent = HumanoidRootPart
28 
29function fly(status)
30    if status == true then
31        if speed < maxSpeed then
32            wait()
33            speed = speed + 5
34        end
35        local MoveDir = CFrame.new(CurrentCamera.CFrame.p, (CurrentCamera.CFrame * CFrame.new(xDelta, 0, zDelta)).p)
36        BodyVelocity.Velocity = MoveDir.lookVector * speed
37    else
38        if speed ~= 0 then
39            wait()
40            speed = speed - 5
41            local MoveDir = CFrame.new(CurrentCamera.CFrame.p, (CurrentCamera.CFrame * CFrame.new(xDelta, 0, zDelta)).p)
42            BodyVelocity.Velocity = MoveDir.lookVector * speed
43        end
44    end
45end
46 
47 
48UserInputService.InputBegan:Connect(function(InputObject)
49    local KeyCode = InputObject.KeyCode
50    if KeyCode == Enum.KeyCode.W then
51        zDelta = zDelta - 1
52    elseif KeyCode == Enum.KeyCode.A then
53        xDelta = xDelta - 1
54    elseif KeyCode == Enum.KeyCode.S then
55        zDelta = zDelta + 1
56    elseif KeyCode == Enum.KeyCode.D then
57        xDelta = xDelta + 1
58    end
59end)
60 
61UserInputService.InputEnded:Connect(function(InputObject)
62    local KeyCode = InputObject.KeyCode
63    if KeyCode == Enum.KeyCode.W then
64        zDelta = zDelta + 1
65    elseif KeyCode == Enum.KeyCode.A then
66        xDelta = xDelta + 1
67    elseif KeyCode == Enum.KeyCode.S then
68        zDelta = zDelta - 1
69    elseif KeyCode == Enum.KeyCode.D then
70        xDelta = xDelta - 1
71    end
72end)
73 
74RunService.RenderStepped:Connect(function()
75    BodyGyro.CFrame = CurrentCamera.CFrame
76    if xDelta ~= 0 or zDelta ~= 0 then
77        fly(true)
78    else
79        fly(false)
80    end
81end)
 View all 81 lines...

Can you quote the line of code that the error shows up at? TheJellyNinja_XD13 62 — 5y

The script doesn't produce any errors, but the player's speed and position become nan. I believe this is because when xDelta and zDelta, the direction variable at line 41 becomes nan stepatron 103 — 5y

1 answer

Answered by

stepatron 103

5 years ago

Edited 5 years ago

Figured it out

001-- Services
002local input = game:GetService("UserInputService")  -- Gets input from player's keyboard
003local rs = game:GetService("RunService")           -- Handles the runtime of the game
004local camera = game.Workspace.CurrentCamera
005 
006-- Player
007local player = game:GetService("Players").LocalPlayer               -- Player
008local character                                                     -- Player's character
009local root                                                          -- Character's HumanoidRootPart
010local humanoid                                                      -- Character's Humanoid
011player.CharacterAdded:connect(function(Char)
012    character = Char
013    root = Char:WaitForChild("HumanoidRootPart")                    
014    humanoid = Char:WaitForChild("Humanoid")                    
015end)
016 
017-- Body Properties
018local bodyVel = Instance.new("BodyVelocity", script)                -- Create "BodyVelocity" in rootpart
019bodyVel.MaxForce = Vector3.new(math.huge, math.huge, math.huge)     -- Infinite potential forces
020bodyVel.Velocity = Vector3.new()                                    -- No velocity / not moving
021 
022-- Directional Values
023local xDelta = 0                                                    -- 1/0/-1 = left/not moving/right
024local lastXDelta = 0
025local zDelta = 0                                                    -- 1/0/-1 = forwards/not moving/backwards
026local lastZDelta = 0
027 
028-- Speed Settings
029local maxSpeed = 200                                                -- Maximum total speed
030local currentSpeed = 0                                              -- Current flying speed
031 
032-- Current Flying Status
033local flying = false
034 
035 
036-- Activate/Deactivate Flying
037input.InputBegan:connect(function(keyPut)
038    local key = keyPut.KeyCode                                      -- What key was pressed
039    if key == Enum.KeyCode.F and flying == false then
040        bodyVel.Parent = root
041        bodyVel.Velocity = root.Velocity
042        flying = true                                               -- Activate flying
043    elseif key == Enum.KeyCode.F and flying == true then
044        bodyVel.Parent = script
045        flying = false
046    end
047end)
048 
049-- Flying controls
050input.InputBegan:connect(function(keyPut)
051    local key = keyPut.KeyCode
052 
053    if key == Enum.KeyCode.W then           -- Forward Movement
054        zDelta = zDelta - 1
055    elseif key == Enum.KeyCode.A then       -- Left Movement
056        xDelta = xDelta - 1
057    elseif key == Enum.KeyCode.S then       -- Backwards Movement
058        zDelta = zDelta + 1
059    elseif key == Enum.KeyCode.D then       -- Right Movement
060        xDelta = xDelta + 1
061    end
062end)
063 
064input.InputEnded:connect(function(keyPut)
065    local key = keyPut.KeyCode
066    if key == Enum.KeyCode.W then
067        zDelta = zDelta + 1
068    elseif key == Enum.KeyCode.A then
069        xDelta = xDelta + 1
070    elseif key == Enum.KeyCode.S then
071        zDelta = zDelta - 1
072    elseif key == Enum.KeyCode.D then
073        xDelta = xDelta - 1
074    end
075end)
076 
077-- Are you flying?
078rs.RenderStepped:connect(function()
079    if flying then
080        if xDelta ~= 0 or zDelta ~= 0 then
081            lastXDelta = xDelta
082            local direction = CFrame.new(camera.CFrame.p, (camera.CFrame * CFrame.new(xDelta, 0, zDelta)).p)
083 
084            if currentSpeed < (maxSpeed - 5) then
085                currentSpeed = currentSpeed + (0.01 * maxSpeed)
086            elseif math.floor(currentSpeed) == maxSpeed or currentSpeed > maxSpeed then
087                currentSpeed = maxSpeed
088            end
089            bodyVel.Velocity = direction.LookVector * currentSpeed
090        else
091            if currentSpeed > 5 then
092                bodyVel.Velocity = bodyVel.Velocity / currentSpeed
093                currentSpeed = currentSpeed - (.02 * currentSpeed) 
094                bodyVel.Velocity = bodyVel.Velocity * currentSpeed
095            else
096                currentSpeed = 0
097            end
098        end
099    end
100end)
 View all 100 lines...

You can also try finding new scripts like this one repeat wait() until game.Players.LocalPlayer and game.Players.LocalPlayer.Character and game.Players.LocalPlayer.Character:findFirstChild("Torso") and game.Players.LocalPlayer.Character:findFirstChild("Humanoid") local mouse = game.Players.LocalPlayer:GetMouse() repeat wait() until mouse local plr = game.Players.LocalPlayer local torso = plr. Mrtixglitch2 -1 — 5y

Why does this fly script turn speed to nan?

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