$collisionjoints

The QC command $collisionjoints is used to define a jointed collision model for a ragdoll. A jointed collision model is used by VPhysics to detect collisions and animate the model's Skeleton accordingly. The main parameter is the name of the physbox.smd or ragdoll.smd file containing this model's skeletal and collision geometry. The Rigging parameters configure the way the skeletal joints respond to Vphysics forces.

Tip:Use vcollide_wireframe 1 to view collision meshes in-game.

Tip:If your model has no moving parts that need to collide, use $collisionmodel.

Note:Collision meshes should be extremely low-poly in comparison to reference meshes, and even lod meshes. See collision mesh.

Syntax

$collisionjoints <collision mesh SMD>
{
    <options>
}

Options

All $collisionmodel options, except $concave

This type of collision mesh is always concave...otherwise how could it be animated?

$rootbone <string|bone>

Overrides the SMD's root bone.

Todo: Purpose.

$jointskip <string|bone>

Eliminates a joint in the skeleton that you don't want to use in collisions.

$jointmerge <string|bone1> <string|bone2>

Merges the vertex assignments for two joints.

$jointconstrain <string|bone> <axis> <allow_option> <min_angle> <max_angle> <friction>

Limits of the a bone's movement relative to its parent bone. See $jointconstrain for a full description.

$jointinertia <string|bone> <float|scale>

Per-bone $inertia.

$jointdamping <string|bone> <float|scale>

Per-bone $damping.

$jointrotdamping <string|bone> <float|scale>

Per-bone $rotdamping.

$jointmassbias <string|bone> <float|bias>

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

Todo: Difference from a $weightlist.

$noselfcollisions

Disables collisions between bones in the same collision model for performance.

Warning:Results in arms clipping through torsos and other weirdness if used improperly!

$jointcollide <string|bone1> <string|bone2>

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

$animatedfriction <float|?> <float|?> <float|?> <float|?> <float|?>

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

Example

$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
}

See also

• $weightlist
• VPhysics
• Physics and Ragdolls
• $collisionmodel