Spinning script roblox

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 Creating Spinning Objects
Spinning objects instantly create dynamic motion within your experience, helping your environment feel more immersive and realistic to everyday objects that constantly spin, such as windmills and propellers. Studio has various methods to create rotating motion, such as using a script to continually change an object’s rotation, or adding constraints that ensure only a portion of an object spins while the rest remains static.
As with all 3D creation, there are many ways to achieve any particular goal. In this guide, you can quickly make objects spin indefinitely by using tools and methods available within Studio. Follow each of the following methods to learn how to:
Allow a portion of an object to remain stationary while the rest of the object constantly spins using a HingeConstraint .
This guide uses two downloadable .fbx files of a propeller prop: one keeps the entire propeller as a single object while the other separates the propeller's head from its base. You can use these components to understand the basic principles of each method, then apply them to your own components that you want to spin in your experiences.
Using Scripts
Scripts provide a fine level of control over the behavior of objects, allowing you to adjust properties to create new behavior for objects within your experiences. Using scripts to implement rotation is useful when you want to calibrate the behavior using a single object, then later scale the behavior to influence a group of objects while only needing to make adjustments to the script itself.
To use a script to make a propeller spin indefinitely:
Select the Propeller-Scripting-Method .fbx file, then click the Open button. The Import Preview window displays.
Enable the Anchored property to ensure the propeller doesn't change position when its blades begin to move.
  local RunService = game:GetService("RunService")   local propeller = script.Parent   local ROTATE_SPEED = 100   -- Heartbeat fires every frame, after the physics simulation has completed.   -- step is the amount of time that has elapsed since the previous frame.  RunService.Heartbeat:Connect(function(step)   -- The amount to rotate is a function of ROTATE_SPEED and step.   local rotationAmount = math.rad(ROTATE_SPEED * step)   -- Apply rotationAmount to the propeller's current CFrame.   propeller.CFrame = propeller.CFrame * CFrame.Angles(0, rotationAmount, 0)   end)
When you playtest your experience , the script quickly rotates the propeller along the Y axis. If you want the propeller to move more quickly or slowly, you can adjust the speed to be higher or lower, respectively.
Using HingeConstraints
Constraints provide the ability to emulate realistic behavior of objects under physical forces, such as gravity, wind, and friction. Using a HingeConstraint , you can create a relationship between the head and base of a propeller, then implement realistic motion in which the base of the propeller remains stationary while the head and its blades continuously spin. When accuracy is important, constraints allow you to simulate how objects spin in real world conditions.
Configuring the Propeller Components
Before you create a HingeConstraint , it's important to configure each of the propeller's components to make sure they have clear naming, the base remains anchored when the blades are in motion, and that you can easily see what's happening as you configure your constraint. This initial setup allows for the entire process to run more smoothly.
To configure the propeller components:
Select the Propeller-HingeConstraint-Method .fbx file, then click the Open button. The Import Preview window displays.
In the hierarchy panel, select PropellerHead_Geo , then in the Object General section, rename the mesh Head .
Enable the Anchored property to ensure the propeller doesn't change position when its blades begin to move.
In the menu bar, select the Move tool, then use the green Y axis arrow to create a gap between both parts to make it easier to visualize the HingeConstraint configuration.
Configuring the HingeConstraint
Now that you have two components that make up the foundation of your propeller, you can create a HingeConstraint , reorient the associated attachments so the propeller's head is able to spin on the Y axis without breaking the hinge, and set the constraint's values to enable the propeller to spin against any physical force within the experience.
Creating the HingeConstraint and Attachments
A HingeConstraint allows two Attachments to rotate about one axis. This type of constraint is ideal for spinning objects with multiple components because it allows you to specify which component you want to spin while keeping the other stationary.
To create a HingeConstraint and its attachments:
Rotating and Moving the Attachments
If you keep both attachments at their default orientations and positions, the propeller's head tries to spin on the Z axis through the base instead of on the Y axis on top of the base. To ensure this doesn't happen, you must rotate the attachments until both Y axis arrows are pointing down, then move the hinge to the top of the base so the blades spin in the correct location.
If you don't reorient and reposition the attachments, the propeller's head spins on the wrong axis in the middle of the base.
Before you begin to reorient your attachments, make sure you are able to view them within the viewport by enabling constraint details:
If it's not currently enabled, click Constraint Details and Draw On Top to display constraint and attachment visual aids.
It's important to view attachments so that you can visualize how the constraint is using both attachments to connect the rotating object to the stationary object and see what axis the attachments are rotating on.
To rotate and move the constraint's attachments so the blades spin correctly:
In the menu bar, select the Rotate tool and rotate the HeadAttachment and BaseAttachment so that the yellow arrow of each attachment points downwards on the Y axis.
Select the Move tool and use the green Y Axis arrow to reposition the BaseAttachment until it's at the top of the base. This tells Studio where to connect the hinge itself.
In the Explorer window, select Head , then continue using the Move tool to close the gap between the propeller's head and base. This step is technically optional because Studio connects the hinge at runtime, but it's ideal to see the object as it reflects to users.
Setting HingeConstraint Values
Now that you have a HingeConstraint and have aligned its associated Attachments , it's time to set the constraint's values to tell Studio's engine how quickly the blades need to rotate, and how strong the blade's motion must push against any physical force within the experience. To ensure that the propeller rotates under all physical conditions, this technique uses the highest strength value possible.
To set values for your constraint to enable elevator movement within a set range of motion:
In the Properties window, navigate to the Hinge section, then set ActuatorType to Motor . New property fields display.
When you playtest your experience , the HingeConstraint moves the propeller at a speed of 50 frames per second along the Y axis. If you want the propeller to move more quickly or slowly, you can adjust the AngularVelocity value to be higher or lower, respectively.