Parameters are accessed with C4DAtom::GetParameter()/ C4DAtom::SetParameter(). See Parameter IDs.
Parameter: Dynamic Object
SIMULATIONSCENE_DYNAMIC
Parameter: Blob Geometry
SIMULATIONSCENE_BLOBGEOMETRY
Parameter: Gravitational Acceleration [m/s^2]
SIMULATIONSCENE_GRAVITY
Parameter: Density
SIMULATIONSCENE_DENSITY
Parameter: Linear Damping
SIMULATIONSCENE_LINEAR_DAMPING
Parameter: Angular Damping
SIMULATIONSCENE_ANGULAR_DAMPING