robloxapp-20240722-1322078.wmv (2.2 MB)
How to fix it? (the train has a lot of weight)
2 Likes
nice work btw i’ve wanted to make a train driving game my whole life but couldn’t srry i couldn’t help
2 Likes
Well if we could see the script that would be nice, also maybe lower maxforce then I guess.
2 Likes
Sure!
local dir = 1
local maxspeed = 120
local currentspeed = 0
local num = 0
local tw = game:GetService("TweenService")
local DL = false
local DR = false
local runservice = game:GetService("RunService")
local soundmodule = require(script.Parent.SoundScript)
local speedtable = {
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
40, 41, 42, 43, 44, 45, 46, 47, 48, 49,
50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
60, 61, 62, 63, 64, 65, 66, 67, 68, 69,
70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
80, 81, 82, 83, 84, 85, 86, 87, 88, 89,
90, 91, 92, 93, 94, 95, 96, 97, 98, 99,
100, 101, 102, 103, 104, 105, 106, 107, 108, 109,
110, 111, 112, 113, 114, 115, 116, 117, 118, 119,
120}
function playsound(name)
for i,k in pairs(script.Parent.Parent.Parent:GetDescendants()) do
if k:IsA("Sound") then
if k.Name == name then
k:Play()
end
end
end
end
function getMass(model)
local mass = 0;
for i,v in pairs(model:GetDescendants()) do
if(v:IsA("BasePart")) then
mass += v:GetMass();
end
end
return mass;
end
function settupBV()
for i,k in pairs(script.Parent:GetDescendants()) do
if k:IsA("BodyVelocity") then
k.MaxForce = Vector3.new(9230150,0,9230150)
end
end
end
function opendoors(side)
if side == "L" then
for i,q in pairs(script.Parent.Parent.Parent:GetDescendants()) do
if q.Name == "DLeft" then
for i,a in pairs(q:GetDescendants()) do
if a.Name == "DoorLock" then
a.Enabled = false
end
if a.Name == "DoorMotor" then
if a:IsA("PrismaticConstraint") then
a.Speed = math.random(2,4)
tw:Create(a,TweenInfo.new(2,Enum.EasingStyle.Elastic),{TargetPosition = math.random(2,2.1)}):Play()
end
end
end
end
end
end
if side == "R" then
for i,q in pairs(script.Parent.Parent.Parent:GetDescendants()) do
if q.Name == "DRight" then
for i,a in pairs(q:GetDescendants()) do
if a.Name == "DoorLock" then
a.Enabled = false
end
if a.Name == "DoorMotor" then
if a:IsA("PrismaticConstraint") then
a.Speed = math.random(2,4)
tw:Create(a,TweenInfo.new(2,Enum.EasingStyle.Elastic),{TargetPosition = math.random(2,2.1)}):Play()
end
end
end
end
end
end
end
function closedoors(side)
if side == "L" then
for i,q in pairs(script.Parent.Parent.Parent:GetDescendants()) do
if q.Name == "DLeft" then
for i,k in pairs(q:GetDescendants()) do
coroutine.wrap(function()
if k:IsA("PrismaticConstraint") then
k.Speed = math.random(2,4)
k.TargetPosition = 0.6
wait(0.3)
tw:Create(k,TweenInfo.new(1,Enum.EasingStyle.Bounce),{TargetPosition = -0.04}):Play()
wait(1)
k.Speed = 0
for i,a in pairs(q:GetDescendants()) do
if a.Name == "DoorLock" then
if a:IsA("SpringConstraint") then
if k.TargetPosition <= 0 then
a.Enabled = true
end
end
end
end
end
end)()
end
end
end
end
if side == "R" then
for i,q in pairs(script.Parent.Parent.Parent:GetDescendants()) do
if q.Name == "DRight" then
for i,k in pairs(q:GetDescendants()) do
coroutine.wrap(function()
if k:IsA("PrismaticConstraint") then
k.Speed = math.random(2,4)
k.TargetPosition = 0.6
wait(0.3)
tw:Create(k,TweenInfo.new(1,Enum.EasingStyle.Bounce),{TargetPosition = -0.04}):Play()
wait(1)
k.Speed = 0
for i,a in pairs(q:GetDescendants()) do
if a.Name == "DoorLock" then
if a:IsA("SpringConstraint") then
if k.TargetPosition <= 0 then
a.Enabled = true
end
end
end
end
end
end)()
end
end
end
end
end
script.RemoteEvent.OnServerEvent:Connect(function(plr,data,data2)
if data == "thr" then
if data2 == 5 then
num = 0.3
end
if data2 == 4 then
num = 0.25
end
if data2 == 3 then
num = 0.2
end
if data2 == 2 then
num = 0.15
end
if data2 == 1 then
num = 0.1
end
if data2 == 0 then
num = 0
end
if data2 == -1 then
num = -0.25
end
if data2 == -2 then
num = -0.35
end
if data2 == -3 then
num = -0.35
end
if data2 == -4 then
num = -0.45
end
if data2 == -5 then
num = -0.5
end
end
if data2 == "L" then
if data == "Door" then
if DL == false then
DL = true
playsound("doors")
wait(0.5)
opendoors("L")
else
DL = false
playsound("doors")
wait(0.5)
closedoors("L")
end
end
end
if data2 == "R" then
if data == "Door" then
if DR == false then
DR = true
playsound("doors")
wait(0.5)
opendoors("R")
else
DR = false
playsound("doors")
wait(0.5)
closedoors("R")
end
end
end
end)
settupBV()
while wait(0.1) do
print(num)
script.currentspeed.Value = currentspeed
script.num.Value = num
if num > 0 or num == 0 then
currentspeed += num
end
if currentspeed > maxspeed then
currentspeed = maxspeed
end
if currentspeed < 0 then
currentspeed = 0
end
for i,q in pairs(script.Parent.Parent.Parent:GetDescendants()) do
if q:IsA("BodyVelocity") then
q.Velocity = q.Parent.CFrame.LookVector * dir * currentspeed
end
end
for i,k in pairs(script.Parent.Parent.Parent:GetDescendants()) do
if k:IsA("Sound") then
if k.Name == "Depart" then
if k.Volume == 0 then
k.Playing = false
end
if currentspeed > maxspeed - 5 then
k.Volume = 0
else
if num > 0 and num ~= 0 then
k.Playing = true
tw:Create(k,TweenInfo.new(15),{Volume = 10}):Play()
end
end
tw:Create(k,TweenInfo.new(4),{PlaybackSpeed = 1 + num}):Play()
if num > 0 and num ~= 0 then
k.Playing = true
tw:Create(k,TweenInfo.new(15),{Volume = 10}):Play()
else
tw:Create(k,TweenInfo.new(0.3),{Volume = 0}):Play()
end
k.PlaybackRegion = NumberRange.new(currentspeed / (120/k.TimeLength),currentspeed / (120/k.TimeLength)+10)
end
if k.Name == "Arrive" then
if k.Volume == 0 then
k.Playing = false
end
tw:Create(k,TweenInfo.new(4),{PlaybackSpeed = 1 + -num/5}):Play()
if num < 0 and num ~= 0 then
k.Playing = true
if k.TimePosition > 0 then
if num < 0 and num ~= 0 then
if currentspeed ~= 0 then
currentspeed -= 0.1
end
end
end
if k.TimePosition > 5 then
if num < 0 and num ~= 0 then
if currentspeed ~= 0 then
currentspeed -= 0.2
end
end
end
if k.TimePosition > 40 then
if num < 0 and num ~= 0 then
if currentspeed ~= 0 then
currentspeed -= 0.5
end
end
end
tw:Create(k,TweenInfo.new(7),{Volume = 10}):Play()
else
tw:Create(k,TweenInfo.new(0.3),{Volume = 0}):Play()
end
if currentspeed > 1 then
k.PlaybackRegion = NumberRange.new(((currentspeed / (120/k.TimeLength)) - k.TimeLength) * -1,k.TimeLength)
end
if currentspeed < 2 then
k.Volume = 0
end
end
if k.Name == "Run" then
k.Volume = currentspeed / (70/10)
k.PlaybackSpeed = currentspeed / (90/1.5)
end
end
end
end
You’re using spring constraints, and prismatic constraints? Why don’t you just use the prismatics for the sliding of the train along the tracks then? Instead of using bodyvelocity, and i’m not sure why you are using spring constraints because that’s only really for the bumping effect of cars.
I’m pretty sure the spring constraint is the problem as it’s causing that shake effect, but you may also wanna play around with network ownership.
1 Like
I use Prismatic for doors and Spring for locks
And these are within the train?
Honestly, I recommend just lerping the CFrames. Roblox physics can be buggy like this and is not reliable for huge baseparts like this train.
You will also have more control, and unlike roblox physics where the train can sometimes spaz out like right now. The train will remain functional.
1 Like
Okay i will try, i will reply later
How i will lerp the train lookvector?
Alright, it could also be due to that while loop. The little “task.wait(0.1)” can make it a bit suttery, try just using “task.wait()”
1 Like
You might not need to use the lookvector, just CFrames since they represent both orientation and position.
Lookvectors would’ve been needed for that bodyvelocity thing you were doing, but not now.
okay, what about alpha, how to use it?
Alpha is like, how far you want it to be. Kinda hard to explain. Let me show a code sample.
for i = 0, 1, .01 do
Train.CFrame = Train.CFrame:Lerp(Train.CFrame * CFrame.new(0,0,1), i)
end
Think of the number 0 and 1 like point A and B.
Number 0 is point A, you are at the starting position and haven’t travelled to point B at all yet.
By 0.5 your halfway
By 1, you’ve made it to point B.
The little incrementing on that for loop (0.01) will make a smoother transition
how to convert cframe to vector3 bc bodyvelocity support vector3?
You can do that by just doing CFrame.Position, but this wouldn’t work in the way you want it to because it would not represent the orientation either. Which may be a problem if your train is not just a straight path and has turns or what not.
Also you might not need to lerp at all, maybe just setting the CFrames is enough.
Train.CFrame = Train.CFrame * CFrame.new(0,0,1)
Just asking is it possible to lerp bodyvelocity?
I’m just not very good at writing scripts, how can this problem be solved? you gave me a bunch of different options for train animation, how can I apply this in my game?