$collisionmodel

The QC command $collisionmodel is used to embed a non-animated collision mesh in a model, for use in VPhysics calculations.

Note:If your model has moving parts that may affect collisions, such as ragdoll limbs, use $collisionjoints instead.

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

Tip:Set the Console Variable vcollide_wireframe 1 to view collision meshes in-game.

Usage

$collisionmodel "<collision mesh SMD>.smd"
{
    <options>
}

$mass <float|kilograms>: Manually set the mass of the model.
$automass: Tells StudioMDL to calculate the mass of the model (based on the volume of the collision SMD and the density/thickness of the material defined in its prop_data).
$concave: By default StudioMDL will generate a single convex hull by bridging any concavities in a collision SMD. You can create a concave hull by including multiple, overlapping convex meshes in your SMD, and using the $concave command to tell StudioMDL to preserve concavities by using multiple convex pieces. The resulting hull structure is a bit like a Rigid ragdoll.
$maxconvexpieces <int>: By default, StudioMDL limits a concave collision model to twenty convex pieces. This command can be used to override the limit - for instance if you are creating an unusually large model.; Note:Introduced with the Orange Box. In the Ep1 engine, run StudioMDL with -fullcollide when compiling instead.
$masscenter <vector|offset>: Override the center of mass, in local coords.
$inertia <float|scale>: Inertia scale.
$damping <float|scale>: Linear damping scale.
$rotdamping <float|scale>: Rotational damping scale.
$drag <float|scale>: Scales air resistance.

$collisionmodel "tree_deciduous_01a_physbox.smd"
{
	$mass 350.0
	$concave
}