ACTION particle_rain
{
// just born?
IF (MY_AGE ==0)
{ // this simple snow should do nothing more than fall to earth
MY_SPEED.X = 0;
MY_SPEED.Y = 2;
MY_SPEED.Z = -6; // experiment with this value

// set the size and colour you want (or maybe a bitmap)
MY_SIZE = 20;
MY_COLOR.RED = 150;
MY_COLOR.GREEN = 150;
MY_COLOR.BLUE = 150;
END;
}