# Position Constraint component

> Constrain a GameObject's position to follow one or more source objects.

A Position Constraint component moves a GameObject to follow its source GameObjects.


**Position Constraint component:**
![](/api/media?file=/engine/6000.6/media/images/PositionConstraint.png)

## Properties

| **Property**  | **Description**                                                                                                                                                                                                                                                                                               |
| ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Activate**  | After you position the constrained GameObject and its source GameObjects, click **Activate** to save this information. **Activate** saves the current offset from the source GameObjects in **Position At Rest** and **Position Offset**, then enables **Is Active** and **Lock**.                            |
| **Zero**      | Sets the position of the constrained GameObject to the source GameObjects. **Zero** resets the **Position At Rest** and **Position Offset** fields, then enables **Is Active** and **Lock**.                                                                                                                  |
| **Is Active** | Enable to evaluate the Constraint. To also apply the Constraint, make sure **Lock** is enabled.                                                                                                                                                                                                               |
| **Weight**    | The strength of the Constraint. A weight of 1 causes the Constraint to move this GameObject at the same rate as its source GameObjects. A weight of 0 removes the effect of the Constraint completely. This weight affects all source GameObjects. Each GameObject in the **Sources** list also has a weight. |

### Constraint Settings

| **Property**             | **Description**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| ------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| **Lock**                 | Enable to let the Constraint move the GameObject. Disable this property to edit the position of this GameObject. You can also edit the **Position At Rest** and **Position Offset** properties. If **Is Active** is enabled, the Constraint updates the **At Rest** or **Offset** properties for you as you move the GameObject or its Source GameObjects. When you are satisfied with your changes, check **Lock** to let the Constraint control this GameObject. This property has no effect in Play mode. |
| **Position At Rest**     | The X, Y, and Z values to use when **Weight** is 0 or when the corresponding **Freeze Position Axes** is not enabled. To edit these fields, disable **Lock**.                                                                                                                                                                                                                                                                                                                                                |
| **Position Offset**      | The X, Y, and Z offset from the Transform that is imposed by the Constraint. To edit these fields, disable Lock.                                                                                                                                                                                                                                                                                                                                                                                             |
| **Freeze Position Axes** | Enable X, Y, or Z to allow the Constraint to control the corresponding axes. Disable an axis to stop the Constraint from controlling it. This allows you to edit, animate, or script the unfrozen axis.                                                                                                                                                                                                                                                                                                      |

### Sources

The list of GameObjects that constrain this GameObject. Each source has a weight from 0 to 1.