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Restore material-based wheel damping #5

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Restore material-based wheel damping #5

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13 changes: 13 additions & 0 deletions ivp_intern/ivp_friction.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -260,6 +260,19 @@ void IVP_Contact_Point::static_friction_single(const IVP_Event_Sim *es,
bool IVP_Contact_Point::friction_force_local_constraint_2d_wheel(
IVP_Core *core_a, IVP_Impact_Solver_Long_Term *info,
const IVP_Event_Sim *es, IVP_FLOAT &flEnergy) {
// Apply material-based damping to vehicle wheels.
IVP_Material* materials[2];
get_material_info(materials);

const IVP_DOUBLE damping = materials[1]->get_damping();

if (damping != 0.0) {
IVP_U_Float_Point rotation_damping;
rotation_damping.set_to_zero();

core_a->damp_object(es->delta_time, &rotation_damping, damping);
}

IVP_Constraint_Car_Object *wheel = core_a->car_wheel;
IVP_Constraint_Solver_Car *solver = wheel->solver_car;

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1 change: 1 addition & 0 deletions ivp_physics/ivp_material.hxx
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Expand Up @@ -48,6 +48,7 @@ class IVP_Material {
get_second_friction_factor() = 0; // second friction factor when two friction
// values is enabled
virtual IVP_DOUBLE get_elasticity() = 0;
virtual IVP_DOUBLE get_damping() { return 0.0; }
// INTERN_START
virtual IVP_DOUBLE get_adhesion() = 0; // for future releases
// INTERN_END
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