public ResourceManager() throws FileNotFoundException, SlickException{
			//misc
			log = new Log();
			//items
			ipx = new IPXParser(itemPath, imgPath);	
			//sprites
			sprites = new HashMap<String,Sprite>();
			loadSprites();
			//mobs
			mpx = new MPXParser(mobPath);
			//maps
			maps = new HashMap<String, AtlasMap>();
			loadMaps();
			mapKeys = maps.keySet();
			spriteDimensions();
		}