physics_particle_count()
Returns: Real
This function will return the number of particles that are
active in a physics enabled room.
if physics_particle_count() <
physics_particle_get_max_count()
{
physics_particle_create(0, x, y, 0, 0, c_white,
1, 1)
}
The above code will check to see if there are less than the maximum number of permitted particles in the room, and if so create one more.