233                 dx:= 0.001 * (random(180) - 90);

   233                 // old dx & dy calcs

   234                 dy:= -0.001 * (random(160) + 40);

   234                 // dx:= 0.001 * (random(180) - 90);

   235                 // dy:= -0.001 * (random(160) + 40);

   236                 // => min speed ~ 0.098, max speed ~ 0.218, speed range ~ 0.120

   237                 // => min angle(4096) ~ 129, max angle ~ 1919, angle range ~ 1790

   238                 dx:= 0.001 * (98 + random(121)); // speed

   239                 Frame:= 129 + random(1791); // angle

   240                 dy:= -dx * hwFloat2Float(AngleSin(Frame));

   241                 // divide by 2 to create an eliptic shape

   242                 dx:=  dx * hwFloat2Float(AngleCos(Frame)) / 2;