The goal is to make it so that any player standing on a moving boat that jumps stays in the exact same spot they jumped on. Down bellow is the script I use for the boat (it isn’t a terrain boat)
I understand it is a physics related issue but here is a demonstration of what is happening now.
However, I cannot find a clear tutorial or method on how to use it so I am making this post to figure it out for all of us. The ‘solution’ post mentioned to use this: Releasing Character Physics Controllers
local boat = script.Parent
local settings = boat.Settings
-- Set max speed and initial movement
boat.MaxSpeed = settings.MaxSpeed.Value
local maxSpeed = boat.MaxSpeed
local acceleration = settings.Acceleration.Value
local turnSpeed = settings.TurnSpeed.Value
-- Initialize physics
boat.BodyPosition.Position = boat.Position
boat.BodyGyro.CFrame = boat.CFrame
local velocity = 0
-- Main loop
while true do
wait()
local throttle = boat.Throttle
local steer = boat.Steer
-- Handle throttle
if throttle == 1 then
if velocity < maxSpeed then
velocity = velocity + acceleration
end
boat.Driving.Value = true
elseif throttle == -1 then
if velocity > -maxSpeed then
velocity = velocity - acceleration
end
boat.Driving.Value = true
elseif throttle == 0 then
-- Gradually reduce velocity toward zero
if velocity > 0 then
velocity = velocity - acceleration
if velocity < 0 then velocity = 0 end
elseif velocity < 0 then
velocity = velocity + acceleration
if velocity > 0 then velocity = 0 end
end
boat.Driving.Value = velocity ~= 0
end
-- Apply movement force
boat.BodyVelocity.Velocity = boat.CFrame.LookVector * velocity
-- Reset steering flags
boat.Left.Value = false
boat.Right.Value = false
-- Handle steering
if steer == 1 then
boat.BodyGyro.CFrame = boat.BodyGyro.CFrame * CFrame.fromEulerAnglesXYZ(0, -turnSpeed, 0)
boat.Driving.Value = true
boat.Right.Value = true
elseif steer == -1 then
boat.BodyGyro.CFrame = boat.BodyGyro.CFrame * CFrame.fromEulerAnglesXYZ(0, turnSpeed, 0)
boat.Driving.Value = true
boat.Left.Value = true
end
end
Here is some info that may help you. I remember a long time ago Badcc, jailbreak dev, was explaining how he did the train in jailbreak, which has the same physics. Its pretty simple, it has a collision box on the train to detect whether you are on the train or not, while a player is, every frame, it add apply the same change in position from the train to the player, so if in that frame the train moves 0.5 studs on the x scale, it adds that transform to the player’s position. if they jump off, that loop stops.
CharacterControllers do not magically do this. They use GroundSensors which you can set to Manual and use your own evaluation code, like standing on a moving platform moves you along with the platform if a Jump is registered.
For example, the GroundSensor in the ControllerManager senses a part under the supposed character, and you can use a script to determine if thats a part of a car or train, and then automatically retain velocity when the player jumps. The ground sensor also has custom height, unlike the humanoid, so it can continuously detect the part even if your feet have left the ground.
You’ll need to delete the Humanoid and use a custom character controller. I made one in the past, but it’s really difficult.
This is how it is accomplished without deleting the Humanoid. Typically, they set the velocity of the character to a raycast that fires down at the ground.
Yes you’re correct, I was trying to express how it’d be done without the Humanoid as I believe it’d be similar in the specific example of jumping atop a car. The only other way I would imagine is the car is a part of your character and that sounds just more annoying than doing the velocity method.
Actually, they don’t need to detect the ground or do some janky trick, AirControllers have a MaintainLinearMomentum property that does exactly what it says!
If you don’t need the behavior to be exactly the same with humanoids, you can use Character Controllers, there’s a setup and controller state machine script in the announcement topic, it will likely need some tweaks, but should achieve what you’re looking for.
Just download the lua source files and insert them where it says.
If you can’t directly insert the files into studio, create the necessary scripts, and copy-paste the source code in.
I put InitializeCharacters in a server script in ServerScriptService. And I put the other in a local script in StarterCharacterScripts but I use R6 so I think that might be the issue.
