physics_particle_get_radius

With this function you can find out what the current radius (in pixels) is for particles in the physics simulation (you can set this value using physics_particle_set_radius()).

Syntax:

physics_particle_get_radius()

Returns:

Real

Example:

if (physics_particle_get_radius() < 32)
{
    physics_particle_set_radius(physics_particle_get_radius() + 1);
}

The above code will check the current radius of the particles in the simulation and if it is less than 32, then it will increase their size by 1.