void CWeaponGravityGun::AddPellet( CGravityPellet *pPellet, CBaseEntity *pAttach, const Vector &surfaceNormal )
{
Assert(m_pelletCount<MAX_PELLETS);
m_activePellets[m_pelletCount].localNormal = surfaceNormal;
if ( pAttach )
{
EntityMatrix tmp;
tmp.InitFromEntity( pAttach );
m_activePellets[m_pelletCount].localNormal = tmp.WorldToLocalRotation( surfaceNormal );
}
m_activePellets[m_pelletCount].pellet = pPellet;
m_activePellets[m_pelletCount].parent = pAttach;
m_pelletCount++;
}
void CPhysThruster::SetupForces( IPhysicsObject *pPhys, Vector &linear, AngularImpulse &angular )
{
Vector forward;
AngleVectors( GetLocalAngles(), &forward );
forward = forward * m_force;
// multiply the force by mass (it's actually just an acceleration)
if ( m_spawnflags & SF_THRUST_MASS_INDEPENDENT )
{
forward = forward * pPhys->GetMass();
}
EntityMatrix xform;
xform.InitFromEntity( m_attachedObject );
Vector origin = xform.LocalToWorld( m_localOrigin );
forward = xform.LocalToWorldRotation( forward );
// Adjust for the position of the thruster -- apply proper torque)
pPhys->CalculateVelocityOffset( forward, origin, linear, angular );
// Stay in local space always if this flag is set
if ( m_spawnflags & SF_THRUST_LOCAL_ORIENTATION )
{
linear = xform.WorldToLocalRotation( linear );
}
if ( !(m_spawnflags & SF_THRUST_FORCE) )
{
// clear out force
linear.Init();
}
if ( !(m_spawnflags & SF_THRUST_TORQUE) )
{
// clear out torque
angular.Init();
}
}
