private World() {
		setFocusable(true);
		addKeyListener(new KeyListener() {

			@Override
			public void keyPressed(KeyEvent kE) {
				int key = kE.getKeyCode();

				switch (key) {
				case KeyEvent.VK_UP:
					bUP = true;
					break;
				case KeyEvent.VK_DOWN:
					bDOWN = true;
					break;
				case KeyEvent.VK_RIGHT:
					bRIGHT = true;
					break;
				case KeyEvent.VK_LEFT:
					bLEFT = true;
					break;
				}
			}

			@Override
			public void keyReleased(KeyEvent kE) {
				int key = kE.getKeyCode();

				switch (key) {
				case KeyEvent.VK_UP:
					bUP = false;
					break;
				case KeyEvent.VK_DOWN:
					bDOWN = false;
					break;
				case KeyEvent.VK_RIGHT:
					bRIGHT = false;
					break;
				case KeyEvent.VK_LEFT:
					bLEFT = false;
					break;
				}
			}

			@Override
			public void keyTyped(KeyEvent kE) {}
		});
	}