Base draw distances on viewx/viewy coordinates, NOT the player object's...

Base draw distances on viewx/viewy coordinates, NOT the player object's coordinates (this can cause problems with things like skyboxes for instance). Splitscreen's player 2 should not affect what sprites player 1 can see, and vice versa! Especially not for precipitation, that just looks ridiculous.

git-svn-id: https://code.orospakr.ca/svn/srb2/trunk@9041 6de4a73c-47e2-0310-b8c1-93d6ecd3f8cd