Source: Roblox Creator Hub · CC BY 4.0 · View source · Code samples: MIT Imported 2026-10-03. Formatting adapted for this site.
RodConstraint
Inherits from: Constraint → Instance → Object
A RodConstraint keeps two attachments separated by its defined Length. By default, both attachments can rotate freely, although you can enable limits to restrict rotational tilt.
Note that if this constraint attaches one part (A) to another part (B) that is anchored or connected to an anchored part (Z), part A will not be locally simulated when interacting with a player.
Limits
You can limit rotation of the attachments within a cone, independently of each other, by enabling the LimitsEnabled property and setting LimitAngle0 and LimitAngle1 respectively.
Inherits from: Constraint
Memory category: BaseParts
Properties
| Name | Type / Returns | Description |
|---|---|---|
| RodConstraint.CurrentDistance | float | The current distance between the constraint's Attachments. |
| RodConstraint.Length | float | The distance apart at which the constraint attempts to keep its Attachments. |
| RodConstraint.LimitAngle0 | float | The maximum angle between the rod and Attachment0 when LimitsEnabled is true. |
| RodConstraint.LimitAngle1 | float | The maximum angle between the rod and Attachment1 when LimitsEnabled is true. |
| RodConstraint.LimitsEnabled | boolean | Determines whether LimitAngle0 and LimitAngle1 control the angles between the rod and the respective attachments. |
| RodConstraint.Thickness | float | The visualized thickness of the RodConstraint. |
Inherited from Constraint
| Name | Type / Returns | Description |
|---|---|---|
| Constraint.Active | boolean | Indicates if the constraint is currently active in the world. |
| Constraint.Attachment0 | Attachment | The Attachment that is connected to Constraint.Attachment1. |
| Constraint.Attachment1 | Attachment | The Attachment that is connected to Constraint.Attachment0. |
| Constraint.Color | BrickColor | The color of the constraint. |
| Constraint.Enabled | boolean | Toggles whether or not the constraint is enabled. |
| Constraint.Visible | boolean | Toggles the constraint's visibility. |
Inherited from Instance
| Name | Type / Returns | Description |
|---|---|---|
| Instance.Archivable | boolean | Determines if an Instance and its descendants can be cloned using Instance:Clone(), and can be saved/published. |
| Instance.archivable | boolean | |
| Instance.Capabilities | SecurityCapabilities | The set of capabilities allowed to be used for scripts inside this container. |
| Instance.IsInSandbox | boolean | Indicates whether the instance is inside a sandboxed container. |
| Instance.Name | string | A non-unique identifier of the Instance. |
| Instance.Parent | Instance | Determines the hierarchical parent of the Instance. |
| Instance.PredictionMode | PredictionMode | Reflects the client-side prediction mode applied to the instance under server-authoritative physics. |
| Instance.RobloxLocked | boolean | A deprecated property that used to protect CoreGui objects. |
| Instance.Sandboxed | boolean | When enabled, the instance can only access abilities in its Capabilities list. |
| Instance.UniqueId | UniqueId | A unique identifier for the instance. |
Inherited from Object
| Name | Type / Returns | Description |
|---|---|---|
| Object.ClassName | string | A read-only string representing the class this Object belongs to. |
| Object.className | string |
RodConstraint.CurrentDistance
The current distance between the constraint's Attachments.
| Field | Value |
|---|---|
| type | float |
| tags | ["ReadOnly","NotReplicated"] |
| security | {"read":"None","write":"None"} |
| thread safety | ReadSafe |
| category | Derived |
| serialization | {"can_load":false,"can_save":true} |
| capabilities | ["Physics"] |
| simulationAccess | true |
RodConstraint.Length
The distance apart at which the constraint attempts to keep its Attachments. Measured in studs.
| Field | Value |
|---|---|
| type | float |
| security | {"read":"None","write":"None"} |
| thread safety | ReadSafe |
| category | Rod |
| serialization | {"can_load":true,"can_save":true} |
| capabilities | ["Physics"] |
| simulationAccess | true |
RodConstraint.LimitAngle0
This property determines the maximum angle between the rod and Attachment0 when LimitsEnabled is true.
| Field | Value |
|---|---|
| type | float |
| security | {"read":"None","write":"None"} |
| thread safety | ReadSafe |
| category | Limits |
| serialization | {"can_load":true,"can_save":true} |
| capabilities | ["Physics"] |
| simulationAccess | true |
RodConstraint.LimitAngle1
This property determines the maximum angle between the rod and Attachment1 when LimitsEnabled is true.
| Field | Value |
|---|---|
| type | float |
| security | {"read":"None","write":"None"} |
| thread safety | ReadSafe |
| category | Limits |
| serialization | {"can_load":true,"can_save":true} |
| capabilities | ["Physics"] |
| simulationAccess | true |
RodConstraint.LimitsEnabled
This property determines whether the LimitAngle0 and LimitAngle1 properties control the angles between the rod and the respective attachments.
| Field | Value |
|---|---|
| type | boolean |
| security | {"read":"None","write":"None"} |
| thread safety | ReadSafe |
| category | Rod |
| serialization | {"can_load":true,"can_save":true} |
| capabilities | ["Physics"] |
| simulationAccess | true |
RodConstraint.Thickness
The visualized thickness of the RodConstraint.
| Field | Value |
|---|---|
| type | float |
| security | {"read":"None","write":"None"} |
| thread safety | ReadSafe |
| category | Appearance |
| serialization | {"can_load":true,"can_save":true} |
| capabilities | ["Physics"] |
| simulationAccess | true |
Methods
Inherited from Constraint
| Name | Type / Returns | Description |
|---|---|---|
| Constraint:GetDebugAppliedForce | Vector3 | |
| Constraint:GetDebugAppliedTorque | Vector3 |
Inherited from Instance
| Name | Type / Returns | Description |
|---|---|---|
| Instance:AddTag | () | Applies a tag to the instance. |
| Instance:children | Instances | Returns an array of the object's children. |
| Instance:ClearAllChildren | () | This method destroys all of an instance's children. |
| Instance:Clone | Instance | Create a copy of an instance and all its descendants, ignoring instances that are not Archivable. |
| Instance:clone | Instance | |
| Instance:Destroy | () | Sets the Instance.Parent property to nil, locks the Instance.Parent property, disconnects all connections, and calls Destroy() on all children. |
| Instance:destroy | () | |
| Instance:FindFirstAncestor | Instance? | Returns the first ancestor of the Instance whose Instance.Name is equal to the given name. |
| Instance:FindFirstAncestorOfClass | Instance? | Returns the first ancestor of the Instance whose Object.ClassName is equal to the given className. |
| Instance:FindFirstAncestorWhichIsA | Instance? | Returns the first ancestor of the Instance for whom Object:IsA() returns true for the given className. |
| Instance:FindFirstChild | Instance? | Returns the first child of the Instance found with the given name. |
| Instance:findFirstChild | Instance | |
| Instance:FindFirstChildOfClass | Instance? | Returns the first child of the Instance whose ClassName is equal to the given class name. |
| Instance:FindFirstChildWhichIsA | Instance? | Returns the first child of the Instance for whom Object:IsA() returns true for the given className. |
| Instance:FindFirstDescendant | Instance? | Returns the first descendant found with the given Instance.Name. |
| Instance:GetActor | Actor? | Returns the Actor associated with the Instance, if any. |
| Instance:GetAttribute | Variant | Returns the value which has been assigned to the given attribute name. |
| Instance:GetAttributeChangedSignal | RBXScriptSignal | Returns an event that fires when the given attribute changes. |
| Instance:GetAttributes | Dictionary | Returns a dictionary of the instance's attributes. |
| Instance:GetChildren | Instances | Returns an array containing all of the instance's children. |
| Instance:getChildren | Instances | |
| Instance:GetDebugId | string | Returns a coded string of the debug ID used internally by Roblox. |
| Instance:GetDescendants | Instances | Returns an array containing all of the descendants of the instance. |
| Instance:GetFullName | string | Returns a string describing the instance's ancestry. |
| Instance:GetStyled | Variant | Returns the styled or explicitly modified value of the specified property, or else the default property value if it hasn't been styled/modified. |
| Instance:GetStyledPropertyChangedSignal | RBXScriptSignal | Returns an event that fires when the given style property changes on the instance. |
| Instance:GetTags | Array | Gets an array of all tags applied to the instance. |
| Instance:HasTag | boolean | Check whether the instance has a given tag. |
| Instance:IsAncestorOf | boolean | Returns true if an Instance is an ancestor of the given descendant. |
| Instance:IsDescendantOf | boolean | Returns true if an Instance is a descendant of the given ancestor. |
| Instance:isDescendantOf | boolean | |
| Instance:IsPropertyModified | boolean | Returns true if the value stored in the specified property is not equal to the code-instantiated default. |
| Instance:QueryDescendants | Instances | Returns an array containing all descendants of the instance that match the selector string. |
| Instance:Remove | () | Sets the object's Parent to nil, and does the same for all its descendants. |
| Instance:remove | () | |
| Instance:RemoveTag | () | Removes a tag from the instance. |
| Instance:ResetPropertyToDefault | () | Resets a property to its default value. |
| Instance:SetAttribute | () | Sets the attribute with the given name to the given value. |
| Instance:WaitForChild | Instance | Returns the child of the Instance with the given name. If the child does not exist, it will yield the current thread until it does. |
Inherited from Object
| Name | Type / Returns | Description |
|---|---|---|
| Object:GetPropertyChangedSignal | RBXScriptSignal | Get an event that fires when a given property of the object changes. |
| Object:IsA | boolean | Returns true if an object's class matches or inherits from a given class. |
| Object:isA | boolean |
Events
Inherited from Instance
| Name | Type / Returns | Description |
|---|---|---|
| Instance.AncestryChanged | Fires when the Instance.Parent property of this object or one of its ancestors is changed. | |
| Instance.AttributeChanged | Fires whenever an attribute is changed on the Instance. | |
| Instance.ChildAdded | Fires after an object is parented to this Instance. | |
| Instance.childAdded | ||
| Instance.ChildRemoved | Fires after a child is removed from this Instance. | |
| Instance.DescendantAdded | Fires after a descendant is added to the Instance. | |
| Instance.DescendantRemoving | Fires immediately before a descendant of the Instance is removed. | |
| Instance.Destroying | Fires immediately before (or is deferred until after) the instance is destroyed via Instance:Destroy(). | |
| Instance.StyledPropertiesChanged | Fires whenever any style property is changed on the instance, including when a property is set to nil. |
Inherited from Object
| Name | Type / Returns | Description |
|---|---|---|
| Object.Changed | Fires immediately after a property of the object changes, with some limitations. |