What I am doing is that I am setting the particles position Y axis to a number to set the rain start position up and the gravity to a lower number to get the rain down from the start position towards the ground, then I move the rain OVER the camera, no matter where the camera move, the rain will move over it.
The rain works fine, however, when the player move, the particles take alittle time to go to the floor, so I see no rain! (sometimes I see alittle rain only) until I stop moving, the rain show up again.
In the particle system I set a variable for velocity (float), this variable represent how FAR the particles will be generated, so If I give a high number, the rain will not disappear when the player move, but I will get into another problem, the very close ground will not be having any rain, so it will look like its raining, but not on the close ground.
Edited by Medo3337, 10 June 2012 - 07:07 PM.