<function name="Elastic" parent="constraint" type="libraryfunc"> <description>Creates an elastic rope constraint.</description> <realm>Server</realm> <file line="546-L614">lua/includes/modules/constraint.lua</file> <args> <arg name="ent1" type="Entity">First entity.</arg> <arg name="ent2" type="Entity">Second entity.</arg> <arg name="bone1" type="number"><page>PhysObj</page> number of first entity to constrain to. (0 for non-ragdolls). See <page>Entity:TranslateBoneToPhysBone</page>.</arg> <arg name="bone2" type="number"><page>PhysObj</page> number of second entity to constrain to. (0 for non-ragdolls). Must be different from `bone1`. See <page>Entity:TranslateBoneToPhysBone</page>.</arg> <arg name="localPos1" type="Vector">Position relative to the the first physics object to constrain to.</arg> <arg name="localPos2" type="Vector">Position relative to the the second physics object to constrain to.</arg> <arg name="constant" type="number">Stiffness of the elastic. The larger the number the less the elastic will stretch.</arg> <arg name="damping" type="number">How much energy the elastic loses. The larger the number, the less bouncy the elastic.</arg> <arg name="relDamping" type="number">The amount of energy the elastic loses proportional to the relative velocity of the two objects the elastic is attached to.</arg> <arg name="material" type="string" default="">The material of the rope. If unset, will be solid black.</arg> <arg name="width" type="number">Width of rope.</arg> <arg name="stretchOnly" type="boolean" default="false">Apply physics forces only on stretch.</arg> <arg name="color" type="table" default="color_white">The color of the rope. See <page>Global.Color</page>.</arg> </args> <rets> <ret name="" type="Entity">The created constraint. ([phys_spring](https://developer.valvesoftware.com/wiki/Phys_spring)) Will return `false` if the constraint could not be created.</ret> <ret name="" type="Entity">The crated rope. ([keyframe_rope](https://developer.valvesoftware.com/wiki/Keyframe_rope)) Will return `nil` if the constraint could not be created.</ret> <ret name="" type="Entity">The created rope. ([keyframe_rope](https://developer.valvesoftware.com/wiki/Keyframe_rope)) Will return `nil` if the constraint could not be created.</ret> </rets> </function>