added the rectangle that shows field of view
added the rectangle that shows field of view

the code is there, getting the actual numbers is beyond me.
needs to be fixed:
sending the correct mass size on line 169
getting the correct formula for field of view on lines 212-213
matheus348/mini-mapa,eeduardogarcia/agar-mini-map,lukemagdalin/agar.io-mini-map,kahlid/agar-mini-map,dimotsai/agar-mini-map