# velocityField(with:) Creates a field node that sets the velocity of physics bodies that enter the node’s area based on the pixel values of a texture. ``` class func velocityField(with velocityTexture: SKTexture) -> SKFieldNode ``` ## Parameters `velocityTexture` A normal texture used to specify the velocities at different points in the field. ## Return Value A new velocity field node. ## Discussion When a physics body is affected, its new velocity in each frame is calculated by performing a texture lookup (treating the value as a normal vector) and then multiplying that vector by the strength of the field. The field has an implicit size (region) equal to the size of the texture; physics bodies outside this area are unaffected by the field node. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)