getWorld()
Get info about the world you are in.
See docs for a list of items

isRemote
isDaytime
worldTime
weather - thunder/rain/only thunder/clear
moonPhase
cleanWeatherTime
rainTime
gameType
seed
difficulty
name
spawn
border
    centerX
    centerZ
    warningDist
    dmgAmount
    radius
    size
isHardcore
isDifficultyLocked 