info_constraint_anchor

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This is a point entity available in all Source games.

Contents

Entity Description

An entity used to attach constraints to a local position on an entity. Usually constraints will attach to the center of mass of an object. Attach the desired constraint to this entity, and then parent this entity to the entity you want the constraint to apply to.

Availability

This point-based entity is available in: all Source games. In code it is represented by class CConstraintAnchor, defined in physconstraint.cpp.

Keyvalues

  • Targetname:

Name <string>
The targetname other entities refer to this entity by.
  • Parentname:

Parent <targetname>
Specifies the targetname of this entity's movement parent. Entities with parents move with their parent.
  • massScale
<float> Amount to scale the mass of this body in the constraint solver.

Inputs

  • Targetname:

Kill
Removes this entity from the world.
KillHierarchy
Removes this entity and all its children from the world.
AddOutput <string>
Evaluates a keyvalue/output on this entity. It can be potentially very dangerous, use with care.
Format: <key> <value>
Format: <output name> <targetname>:<inputname>:<parameter>:<delay>:<max times to fire, -1 means infinite>
FireUser1 to FireUser4
Fire the OnUser outputs; see User Inputs and Outputs.
  • Parentname:

SetParent <targetname>
Move with this entity. See Entity Hierarchy (parenting).
SetParentAttachment <string>
Attach to a named attachment on the current parent. The entity will teleport so that the position of its root bone matches that of the attachment.
SetParentAttachmentMaintainOffset <string>
As above, but without teleporting. The entity retains its position relative to the attachment at the time of the input being received.
ClearParent
Removes this entity from its current movement hierarchy.

Outputs

  • Targetname:

OnUser1 to OnUser4
Fired in response to the FireUser inputs; see User Inputs and Outputs.
OnKilled (New with Left 4 Dead)
Fired when the entity is killed and removed from the game.
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