$collisionmodel: Difference between revisions
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Tip:Use
Tip:If your model has moving parts that need to collide, including ragdoll limbs, use
Warning:Collision meshes should be extremely low-poly in comparison to body meshes, and even lod meshes. See collision mesh.
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{{tip|Use <code>vcollide_wireframe 1</code> to view collision meshes in-game.}} | {{tip|Use <code>vcollide_wireframe 1</code> to view collision meshes in-game.}} | ||
{{tip|If your model has moving parts that need to collide, use <code>[[$collisionjoints]]</code>.}} | {{tip|If your model has moving parts that need to collide, including ragdoll limbs, use <code>[[$collisionjoints]]</code>.}} | ||
{{warning|Collision meshes should be extremely low-poly in comparison to [[body mesh]]es, and even [[lod mesh]]es. See [[collision mesh]].}} | {{warning|Collision meshes should be extremely low-poly in comparison to [[body mesh]]es, and even [[lod mesh]]es. See [[collision mesh]].}} | ||
Revision as of 10:13, 27 April 2008
The QC command $collisionmodel is used to embed a non-animated collision mesh in a model, for use in VPhysics calculations.
Tip:Use vcollide_wireframe 1 to view collision meshes in-game.Tip:If your model has moving parts that need to collide, including ragdoll limbs, use $collisionjoints.Warning:Collision meshes should be extremely low-poly in comparison to body meshes, and even lod meshes. See collision mesh.Usage
$collisionmodel <collision mesh SMD> { <options> }
Options
$mass <float|kilograms>- Manually set the mass of the model.
- Todo: Presumably this has some use outside physics simulation?
$automass- Automatically compute the mass of the model. The calculation takes into account the density/thickness of the material defined by $surfaceprop and/or prop_data, as well as the volume of the collision SMD itself.
$concave- A collision model must be a convex shape, but you can create concave shapes by including multiple meshes in the same model. $concave tells studiomdl that this is what you want it to do, rather than make a single convex hull by bridging any gaps.
$maxconvexpieces <int>- By default, studiomdl limits a concave collision model to twenty convex pieces. This command can be used to override the limit - for instance if you are creating an unusually large model.
Note:Introduced with the Orange Box. In the Ep1 engine, run studiomdl with -fullcollidewhen compiling instead.$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 air resistance.
Example
$collisionmodel "tree_deciduous_01a_physbox.smd"
{
$mass 350.0
$concave
}