<function name="GetMaterial" parent="PhysObj" type="classfunc"> <description>Returns the [physical material](https://developer.valvesoftware.com/wiki/Material_surface_properties) of the physics object. <description>Returns the [physical material](https://developer.valvesoftware.com/wiki/Material_surface_properties) ($surfaceprop) of the physics object. See <page>util.GetSurfaceData</page> for a function that adds these types as well as further explanation of what they are.</description> <realm>Shared</realm> <rets> <ret name="" type="string">The physical material name.</ret> <ret name="" type="string">The physical material name. ($surfaceprop)</ret> </rets> </function> ⤶ ⤶ <example>⤶ <description>Play an appropriate sound when we hit something.</description>⤶ <code>⤶ function ENT:Initialize()⤶ local phys = self.Entity:GetPhysicsObject()⤶ if IsValid(phys) then ⤶ self.ImpactSound = util.GetSurfaceData(util.GetSurfaceIndex(phys:GetMaterial())).impactHardSound⤶ end⤶ end⤶ ⤶ function ENT:PhysicsCollide(data, physobj)⤶ if (data.Speed > 50) then⤶ self:EmitSound(Sound(self.ImpactSound))⤶ end⤶ end⤶ </code>⤶ </example>⤶