public void keyPressed(KeyEvent e) { switch (e.getKeyCode()) { case KeyEvent.VK_Z: skill_id = 0; break; case KeyEvent.VK_X: skill_id = 1; break; case KeyEvent.VK_C: skill_id = 2; break; case KeyEvent.VK_V: skill_id = 3; break; case KeyEvent.VK_SPACE: if (arena.game == Constant.GameStatus.PAUSE) { arena.game = prevGameStatus; } else { prevGameStatus = arena.game; arena.game = Constant.GameStatus.PAUSE; } break; case KeyEvent.VK_ESCAPE: arena.game = Constant.GameStatus.END; break; default:; } }