--- name: ControllerPartSensor last_updated: 2026-06-11T23:11:56Z inherits: - ControllerSensor - SensorBase - Instance - Object type: class memory_category: Instances summary: "A SensorBase that outputs data about another BasePart based on Humanoid floor and ladder detection logic." --- # Class: ControllerPartSensor > A [SensorBase](/docs/reference/engine/classes/SensorBase.md) that outputs data about another [BasePart](/docs/reference/engine/classes/BasePart.md) based on > [Humanoid](/docs/reference/engine/classes/Humanoid.md) floor and ladder detection logic. ## Description A [SensorBase](/docs/reference/engine/classes/SensorBase.md) that outputs data about another [BasePart](/docs/reference/engine/classes/BasePart.md) based on [Humanoid](/docs/reference/engine/classes/Humanoid.md) floor and ladder detection logic. It is primarily used for sending data to a character controller. Using a [ControllerPartSensor](/docs/reference/engine/classes/ControllerPartSensor.md) allows you to detect [BaseParts](/docs/reference/engine/classes/BasePart.md) in the same manner as the [Humanoid](/docs/reference/engine/classes/Humanoid.md) uses for detecting floors and ladders. ## Properties ### Property: ControllerPartSensor.HitFrame ```json { "type": "CFrame", "access": "ReadWrite", "security": { "read": "None", "write": "None" }, "serialization": { "can_load": true, "can_save": true }, "thread_safety": "ReadSafe", "category": "Output", "capabilities": [ "Basic" ], "simulationAccess": true } ``` The position in world space where the sensor hit the [ControllerPartSensor.SensedPart](/docs/reference/engine/classes/ControllerPartSensor.md). ### Property: ControllerPartSensor.HitNormal ```json { "type": "Vector3", "access": "ReadWrite", "security": { "read": "None", "write": "None" }, "serialization": { "can_load": true, "can_save": true }, "thread_safety": "ReadSafe", "category": "Output", "capabilities": [ "Basic" ], "simulationAccess": true } ``` The surface normal at the position where the sensor hit the SensedPart. ### Property: ControllerPartSensor.LadderSearchHeight ```json { "type": "float", "access": "ReadWrite", "security": { "read": "None", "write": "None" }, "serialization": { "can_load": true, "can_save": true }, "thread_safety": "ReadSafe", "category": "Input", "capabilities": [ "Basic" ], "simulationAccess": true } ``` ### Property: ControllerPartSensor.LadderSearchOffset ```json { "type": "float", "access": "ReadWrite", "security": { "read": "None", "write": "None" }, "serialization": { "can_load": true, "can_save": true }, "thread_safety": "ReadSafe", "category": "Input", "capabilities": [ "Basic" ], "simulationAccess": true } ``` ### Property: ControllerPartSensor.SearchDistance ```json { "type": "float", "access": "ReadWrite", "security": { "read": "None", "write": "None" }, "serialization": { "can_load": true, "can_save": true }, "thread_safety": "ReadSafe", "category": "Input", "capabilities": [ "Basic" ], "simulationAccess": true } ``` The distance from the sensor's parent [BasePart](/docs/reference/engine/classes/BasePart.md) to use when sensing other parts. ### Property: ControllerPartSensor.SensedMaterial ```json { "type": "Material", "access": "ReadWrite", "security": { "read": "None", "write": "None" }, "serialization": { "can_load": true, "can_save": true }, "thread_safety": "ReadSafe", "category": "Data", "capabilities": [ "Basic" ], "simulationAccess": true } ``` ### Property: ControllerPartSensor.SensedPart ```json { "type": "BasePart", "access": "ReadWrite", "security": { "read": "None", "write": "None" }, "serialization": { "can_load": true, "can_save": true }, "thread_safety": "ReadSafe", "category": "Output", "capabilities": [ "Basic" ], "simulationAccess": true } ``` A reference to the [BasePart](/docs/reference/engine/classes/BasePart.md) hit by the sensor. ### Property: ControllerPartSensor.SensorMode ```json { "type": "SensorMode", "access": "ReadWrite", "security": { "read": "None", "write": "None" }, "serialization": { "can_load": true, "can_save": true }, "thread_safety": "ReadSafe", "category": "Input", "capabilities": [ "Basic" ], "simulationAccess": true } ``` Determines what behavior this [SensorBase](/docs/reference/engine/classes/SensorBase.md) uses when sensing other parts. A setting of [SensorMode.Ladder](/docs/reference/engine/enums/SensorMode.md) performs the same ladder detection logic used by a [Humanoid](/docs/reference/engine/classes/Humanoid.md) to populate sensor output. It currently always senses along the forward vector of its parent [BasePart](/docs/reference/engine/classes/BasePart.md). A setting of [SensorMode.Floor](/docs/reference/engine/enums/SensorMode.md) performs the same floor detection logic used by a [Humanoid](/docs/reference/engine/classes/Humanoid.md) to populate sensor output. It currently always senses along the negative up vector of the world. ## Inherited Members ### From [SensorBase](/docs/reference/engine/classes/SensorBase.md) - **Property `UpdateType`** (`SensorUpdateType`): Determines how the sensor will update its output data. - **Method `Sense(): ()`**: *(deprecated)* - **Event `OnSensorOutputChanged`**: ### From [Instance](/docs/reference/engine/classes/Instance.md) - **Property `Archivable`** (`boolean`): Determines if an Instance and its descendants can be cloned using - **Property `archivable`** (`boolean`): *(deprecated, hidden)* - **Property `Capabilities`** (`SecurityCapabilities`): The set of capabilities allowed to be used for scripts inside this - **Property `Name`** (`string`): A non-unique identifier of the Instance. - **Property `Parent`** (`Instance`): Determines the hierarchical parent of the Instance. - **Property `PredictionMode`** (`PredictionMode`): - **Property `RobloxLocked`** (`boolean`): A deprecated property that used to protect CoreGui objects. *(hidden)* - **Property `Sandboxed`** (`boolean`): When enabled, the instance can only access abilities in its `Capabilities` - **Property `UniqueId`** (`UniqueId`): A unique identifier for the instance. - **Method `AddTag(tag: string): ()`**: Applies a tag to the instance. - **Method `children(): Instances`**: Returns an array of the object's children. *(deprecated)* - **Method `ClearAllChildren(): ()`**: This method destroys all of an instance's children. - **Method `Clone(): Instance`**: Create a copy of an instance and all its descendants, ignoring instances - **Method `clone(): Instance`**: *(deprecated)* - **Method `Destroy(): ()`**: Sets the Instance.Parent property to `nil`, locks the - **Method `destroy(): ()`**: *(deprecated)* - **Method `FindFirstAncestor(name: string): Instance?`**: Returns the first ancestor of the Instance whose - **Method `FindFirstAncestorOfClass(className: string): Instance?`**: Returns the first ancestor of the Instance whose - **Method `FindFirstAncestorWhichIsA(className: string): Instance?`**: Returns the first ancestor of the Instance for whom - **Method `FindFirstChild(name: string, recursive?: boolean): Instance?`**: Returns the first child of the Instance found with the given name. - **Method `findFirstChild(name: string, recursive?: boolean): Instance`**: *(deprecated)* - **Method `FindFirstChildOfClass(className: string): Instance?`**: Returns the first child of the Instance whose - **Method `FindFirstChildWhichIsA(className: string, recursive?: boolean): Instance?`**: Returns the first child of the Instance for whom - **Method `FindFirstDescendant(name: string): Instance?`**: Returns the first descendant found with the given Instance.Name. - **Method `GetActor(): Actor?`**: Returns the Actor associated with the Instance, if any. - **Method `GetAttribute(attribute: string): Variant`**: Returns the value which has been assigned to the given attribute name. - **Method `GetAttributeChangedSignal(attribute: string): RBXScriptSignal`**: Returns an event that fires when the given attribute changes. - **Method `GetAttributes(): Dictionary`**: Returns a dictionary of the instance's attributes. - **Method `GetChildren(): Instances`**: Returns an array containing all of the instance's children. - **Method `getChildren(): Instances`**: *(deprecated)* - **Method `GetDebugId(scopeLength?: int): string`**: Returns a coded string of the debug ID used internally by Roblox. - **Method `GetDescendants(): Instances`**: Returns an array containing all of the descendants of the instance. - **Method `GetFullName(): string`**: Returns a string describing the instance's ancestry. - **Method `GetStyled(name: string, selector: string?): Variant`**: Returns the styled or explicitly modified value of the specified property, - **Method `GetStyledPropertyChangedSignal(property: string): RBXScriptSignal`**: - **Method `GetTags(): Array`**: Gets an array of all tags applied to the instance. - **Method `HasTag(tag: string): boolean`**: Check whether the instance has a given tag. - **Method `IsAncestorOf(descendant: Instance): boolean`**: Returns true if an Instance is an ancestor of the given - **Method `IsDescendantOf(ancestor: Instance): boolean`**: Returns `true` if an Instance is a descendant of the given - **Method `isDescendantOf(ancestor: Instance): boolean`**: *(deprecated)* - **Method `IsPropertyModified(property: string): boolean`**: Returns `true` if the value stored in the specified property is not equal - **Method `QueryDescendants(selector: string): Instances`**: Returns an array containing all descendants of the instance that match the - **Method `Remove(): ()`**: Sets the object's `Parent` to `nil`, and does the same for all its *(deprecated)* - **Method `remove(): ()`**: *(deprecated)* - **Method `RemoveTag(tag: string): ()`**: Removes a tag from the instance. - **Method `ResetPropertyToDefault(property: string): ()`**: Resets a property to its default value. - **Method `SetAttribute(attribute: string, value: Variant): ()`**: Sets the attribute with the given name to the given value. - **Method `WaitForChild(childName: string, timeOut: double): Instance`**: Returns the child of the Instance with the given name. If the - **Event `AncestryChanged`**: Fires when the Instance.Parent property of this object or one of - **Event `AttributeChanged`**: Fires whenever an attribute is changed on the Instance. - **Event `ChildAdded`**: Fires after an object is parented to this Instance. - **Event `childAdded`**: *(deprecated)* - **Event `ChildRemoved`**: Fires after a child is removed from this Instance. - **Event `DescendantAdded`**: Fires after a descendant is added to the Instance. - **Event `DescendantRemoving`**: Fires immediately before a descendant of the Instance is removed. - **Event `Destroying`**: Fires immediately before (or is deferred until after) the instance is - **Event `StyledPropertiesChanged`**: Fires whenever any style property is changed on the instance, including ### From [Object](/docs/reference/engine/classes/Object.md) - **Property `ClassName`** (`string`): A read-only string representing the class this Object belongs to. - **Property `className`** (`string`): *(deprecated)* - **Method `GetPropertyChangedSignal(property: string): RBXScriptSignal`**: Get an event that fires when a given property of the object changes. - **Method `IsA(className: string): boolean`**: Returns true if an object's class matches or inherits from a given class. - **Method `isA(className: string): boolean`**: *(deprecated)* - **Event `Changed`**: Fires immediately after a property of the object changes, with some