Edit File: pingpong.stp
#!/usr/bin/stap # Ping pong ball in tty window # Run in a xterm and resize window # Copyright (C) 2011 Masami Hiramatsu <masami.hiramatsu@gmail.com> # # This file is free software and is distributed under the terms of the GNU # General Public License (GPL); either version 2, or (at your option) any # later version. global Row, Col global dr = 1, dc = 1 probe begin { Row = game_tty_ws_row()/2; Col = game_tty_ws_col()/2 } probe timer.ms(50) { Row += dr; Col += dc if (Row >= game_tty_ws_row()) { dr = -dr; Row = game_tty_ws_row() } else if (Row <= 1) { dr = -dr; Row = 1 } if (Col >= game_tty_ws_col()) { dc = -dc; Col = game_tty_ws_col() } else if (Col <= 1) { dc = -dc; Col = 1 } ansi_clear_screen() ansi_cursor_move(Col, Row) print("@") }