Li-Fan Chen says to YSITDAll entities have these properties: A position, velocity, and rotation (as according to ordinary Newtonian physics). A specific volume they occupy, which is a 3-dimensional box with a fixed height and width (square when viewed from the top, and not rotating). Current health. Whether they are on fire. Fire reduces health gradually and displays flames covering the entity. Effects, caused mainly by splash potions. Spiders can also spawn with effects when playing on hard mode.at Sun, May 22, 2016 3:27 PM