$collisionmodel

The QC command $collisionmodel is used to embed a static collision mesh in a model, for use in VPhysics calculations. Animated models (including one that will become ragdolls) should use $collisionjoints instead.

Warning:Collision meshes should have extremely few polygons. See Collision mesh for examples.

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

Syntax

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

Options

$mass <float|kilograms>

Manually set the mass of the model, in kilograms.

Tip:By default, the Player can +USE pick up 35KG max. The gravgun can pick up 250KG max.

$automass

Calculate the mass of the model based on the volume of the collision model and the material defined in its prop_data.

$concave

By default, studiomdl will generate a single convex hull by 'shrinkwrapping' any concavities. You can create a concave hull by including multiple convex shapes (potentially overlapping) in your SMD and passing this command.

$maxconvexpieces <int>

By default, the model compiler limits a concave collision model to twenty convex pieces. This command can be used to override the limit if you are creating an unusually large model.

Note:Introduced with the Orange Box. In the Ep1 engine, run studiomdl with -fullcollide (see below) 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.

Example

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

-Fullcollide in ep1 via batch file

Open a text editor and copy and paste the following code in

@echo on

cd "%sourcesdk%\bin\ep1\bin\"

studiomdl.exe -fullcollide %1

@pause

Save the text file, for example, as fullcollide.bat (make sure it's really a .bat file and not a .txt file)

After that, place fullcollide.bat into the same folder as your .qc file and drag and drop the .qc file onto the batch file, truncating will be disabled now.

See also

• VPhysics
• Physics and Ragdolls
• $collisionjoints