How do I Start to Script a drivable Helicopter?

Miserable_Haven · December 18, 2023, 3:02am

I have made a helicopter model that gets fully welded and has a vehicleseat, but it does not work as it is a helicopter, not a car. I want this helicopter to use instances such as angular velocity/linear velocity, or if there are other methods that work using physics.

How would I script this? Keep in mind I want it to depend on the vehicle seats steer and throttle value. I want this to be at least mobile compatible.

The blade is connected with a hinge and does spin with sounds when a player enters the vehicleseat. Although, it has no controls.

So, where do I start?

Katrist · December 18, 2023, 3:06am

You can first add a LinearVelocity into your helicopter and set it to an attachment. Tweak the force values until you’re comfortable with the speed. You can modify the values of the LinearVelocity based on the throttle value and steer value of that seat.

Miserable_Haven · December 18, 2023, 3:06am

Where should I place the linear velocity on the helicopter? I want to make sure it is easy to control.

Katrist · December 18, 2023, 3:07am

It shouldn’t matter, just make sure you set up a PrimaryPart for the helicopter, add an attachment in that, and connect the LinearVelocity’s attachment to the attachment you added.

Miserable_Haven · December 18, 2023, 3:43am

The primary I decided was the floor.

I made linear relativeto to attachment0.

but the helicopter is not stable

code:

local function Check()
	if VehicleSeat.Steer == -1 then
		MainLinearVelocity.VectorVelocity = Vector3.new(MainLinearVelocity.VectorVelocity.X,MainLinearVelocity.VectorVelocity.Y,-MaxLinearVelocity)
	elseif VehicleSeat.Steer == 1 then
		MainLinearVelocity.VectorVelocity = Vector3.new(MainLinearVelocity.VectorVelocity.X,MainLinearVelocity.VectorVelocity.Y,MaxLinearVelocity)
	elseif VehicleSeat.Steer == 0 then
		MainLinearVelocity.VectorVelocity = Vector3.new(MainLinearVelocity.VectorVelocity.X,MainLinearVelocity.VectorVelocity.Y,0)
	end
	if VehicleSeat.Throttle == 1 then
		MainLinearVelocity.VectorVelocity = Vector3.new(MainLinearVelocity.VectorVelocity.X,MaxLinearVelocity,MainLinearVelocity.VectorVelocity.Z)
	elseif VehicleSeat.Throttle == 0 then
		MainLinearVelocity.VectorVelocity = Vector3.new(MainLinearVelocity.VectorVelocity.X,0,MainLinearVelocity.VectorVelocity.Z)
	elseif VehicleSeat.Throttle == -1 then
		MainLinearVelocity.VectorVelocity = Vector3.new(MainLinearVelocity.VectorVelocity.X,-MaxLinearVelocity,MainLinearVelocity.VectorVelocity.Z)
	end
end

check function is ran when throttle or steer change
main linear velocity is this

Katrist · December 18, 2023, 3:44am

This is where AlignOrientation comes in. You can use it to stabilize your helicopter. Good work by the way.

Miserable_Haven · December 18, 2023, 3:46am

The documentation is very confusing and I do not understand what properties to change, but I put it inside the primarypart

Now what do I do?

Katrist · December 18, 2023, 3:47am

Make it one attachment, and set the CFrame of the AlignOrientation to the desired Orientation. Make sure to change the forces too.

For example:

AlignOrientation.CFrame = CFrame.new(0, 0, 0) -- Will attempt to be this orientation

Miserable_Haven · December 18, 2023, 3:50am

Do I change the attachments oreintation based on the steer/throttle, or would it be velocity then when I change this I make alignoreintation to the CFrame of attachment0?

Katrist · December 18, 2023, 3:51am

You should only be setting the AlignOrientation’s CFrame, just try out some values and see how it works. The best way to figure out what you want is to test it.

Miserable_Haven · December 18, 2023, 3:53am

When setting the AlignOrientations CFrame, how do I make the CFrame on the AlignOrientation go to where I want the helicopter to rotate?

Katrist · December 18, 2023, 3:54am

Matters on how your helicopter is originally orientated.

I’m guessing you’ll either have to change the X or Z values in the CFrame.

Miserable_Haven · December 18, 2023, 3:55am

I still do not understand well how to do it

Katrist · December 18, 2023, 3:56am

Just test around with it, I don’t know the exact values you’ll need.

Information you might need:

Katrist · December 18, 2023, 4:00am

Here’s a video on BodyGyros (AlignOrientation replaced them, but it should be fairly similar to implement):

Miserable_Haven · December 18, 2023, 4:02am

I put the AlignOrientation mode to oneattachment, and now the helicopter is driveable, but can not rotate, but now that this is driveable, how would I make it rotate ? By rotate I mean rotate the body, since it can already steer

Katrist · December 18, 2023, 4:05am

Set the AlignOrientation’s CFrame to your desired tilt.

Miserable_Haven · December 18, 2023, 4:10am

Is the cframe on align orientation dependent on its axis or the words axis?

Katrist · December 18, 2023, 4:10am

Correct.

Katrist · December 18, 2023, 4:13am

Sorry, I read that wrong, I’m fairly sure the orientation is dependent on a global axis, and the position isn’t taken into account.

The documentation is a bit difficult for me to understand too lol: