explain how "is player visible" heuristics works related to #213
explain how "is player visible" heuristics works
related to #213

dighan/flashls,NicolasSiver/flashls,mangui/flashls,Peer5/flashls,Corey600/flashls,NicolasSiver/flashls,thdtjsdn/flashls,fixedmachine/flashls,hola/flashls,tedconf/flashls,vidible/vdb-flashls,neilrackett/flashls,Boxie5/flashls,thdtjsdn/flashls,loungelogic/flashls,dighan/flashls,jlacivita/flashls,Peer5/flashls,loungelogic/flashls,mangui/flashls,Peer5/flashls,Boxie5/flashls,codex-corp/flashls,hola/flashls,codex-corp/flashls,Peer5/flashls,clappr/flashls,fixedmachine/flashls,Corey600/flashls,tedconf/flashls,JulianPena/flashls,clappr/flashls,vidible/vdb-flashls,neilrackett/flashls,jlacivita/flashls,JulianPena/flashls