public void update() throws Exception{

		previousPositions[pointIndex] = filteredPositions;

		ledCount = 0;

		receivedBytes = Arrays.copyOfRange(wiimote.getBytes(), 7, 19);

		for(int i = 0; i < 12; i++){

			System.out.print(receivedBytes[i] + " ");
		}
		System.out.println();

		for(int i = 0; i < 4; i++){

			if(receivedBytes[i * 3] != -1 || receivedBytes[i * 3 + 1] != -1 || receivedBytes[i * 3 + 2] != -1){

				int x = 1024 - (((receivedBytes[i * 3 + 2] & 48) >> 4) * 256 + (receivedBytes[i * 3 + 0] + 256) % 256);
				int y = 768 - (((receivedBytes[i * 3 + 2] & 192) >> 6) * 256 + (receivedBytes[i * 3 + 1] + 256) % 256);

				filteredPositions[i].x = x * screenSize.width / 824 - 100;
				filteredPositions[i].y = y * screenSize.height / 568 - 100;

				ledCount++;
			}
		}

		pointIndex = (pointIndex + 1) % 5;
	}