The LineForce constraint applies force along the theoretical line connecting its two Attachments. As the end points (attachments) move, the direction of force will change accordingly.

Force Location

By default, force is applied to either parent at its attachment location. If desired, force can be focused at each parent's center of mass by toggling on ApplyAtCenterOfMass.

ApplyAtCenterOfMass = false
ApplyAtCenterOfMass = true

Inverse Square Law

When InverseSquareLaw is true, the force magnitude is multiplied by the inverse square of the distance, meaning the force will increase exponentially as the two attachments get closer together, like magnets. When using this setting, it's recommended that you set a MaxForce threshold to prevent infinite force if the attachments align precisely.

InverseSquareLaw = false
InverseSquareLaw = true

Reactionary Force

By default, the constraint only applies force to Attachment0, while Attachment1 remains unaffected. However, force can be applied to both attachments in equal and opposite directions by enabling ReactionForceEnabled.

ReactionForceEnabled = false
ReactionForceEnabled = true