$collisionjoints

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The QC command $collisionjoints is used to setup the ragdoll or jointed collision model.

Note:Jointed collision models use $collisionjoints instead of $collisionmodel.

• See also Physics and Ragdolls.

Example Syntax

$collisionjoints "bip01_phys.smd" {
	$mass 115.0
	$inertia 2.00
	$damping 0.01
	$rotdamping 0.40
	$rootbone "bip01_pelvis"
	$jointmerge "bip01_pelvis" "bip01_spine"

	$jointmassbias "bip01_l_arm2" 2.00
	$jointconstrain "bip01_l_arm2" x limit 0.00 0.00 0.00
	$jointconstrain "bip01_l_arm2" y limit 0.00 0.00 0.00
	$jointconstrain "bip01_l_arm2" z limit -120.00 4.00 0.20

	$jointrotdamping "bip01_head" 5.00
	$jointconstrain "bip01_head" x limit -20.00 20.00 0.00
	$jointconstrain "bip01_head" y limit -25.00 25.00 0.04
	$jointconstrain "bip01_head" z limit -13.00 30.00 0.04
}

General Parameters

$mass <kilograms>

Manually set the mass, in kilograms, of the model.

• This is applicable when the object is a physics prop, rather than simply a static prop. Make certain to set this correctly, otherwise your object will behave unrealistically.

$automass

Automatically compute the mass of the model.

• Derived from the density/thickness of the material defined by $surfaceprop and/or prop_data and the volume of the $collisionmodel itself.

$masscenter <X Y Z offset?>

Override the center of mass, in local coords.

$inertia <scale?>

Inertia scale.

$damping <scale?>

Linear damping scale.

$rotdamping <scale?>

Rotational damping scale.

$drag <scale?>

Scales the air resistance.

Joint Parameters

$rootbone <bone_name?>

The parent-most bone that actually has collision geometry.

$jointskip <bone_name?>

Eliminates a joint in the collision model that you don't want to use. (Rarely used.)

• (eg: if you were using a render model as a ragdoll, and it has bones you don't want)

$jointmerge <bone_name1> <bone_name2>

Merges the vertex assignments for two joints.

$jointconstrain <bone_name> <axis> <allow_option> <min_angle> <max_angle> <friction>

Limits of the a bone's movement relative to its parent bone.

$jointinertia <scale?>

Like $inertia, but per-bone.

$jointdamping <scale?>

Like $damping, but per-bone.

$jointrotdamping <scale?>

Like $rotdamping, but per-bone.

$jointmassbias <bone_name?> <value?>

Mass is automatically distributed by volume, this lets you bias it per-bone.

$noselfcollisions

Turns off all collisions between bones in this model, usually for performance.

$jointcollide <bone_name1?> <bone_name2?>

If any $jointcollide pairs are specified, only those joints collide with each other.

$animatedfriction <animation_name?>

Used to animate the amount of friction on joints over time.