# TTY related routines for games
# 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 GM_tty_ws_row, GM_tty_ws_col, GM_tty_name

# Initialize current TTY -- must be called from begin
function game_tty_init:long ()
{
	tty = @cast(task_current(), "task_struct")->signal->tty
	if (tty) {
		namep = @cast(tty,"tty_struct")->name
		GM_tty_name = kernel_string(namep)
		GM_tty_ws_col = @cast(tty, "tty_struct")->winsize->ws_col
		GM_tty_ws_row = @cast(tty, "tty_struct")->winsize->ws_row
	}
	return tty
}

probe begin(-100) {
	if (game_tty_init() == 0) {
		print("Failed to get current tty\n")
		exit()
	}
}

probe game.tty.resize = kernel.function("tty_do_resize") {
	if (kernel_string($tty->name) == GM_tty_name) {
		row = $ws->ws_row
		col = $ws->ws_col
	}
}

probe game.tty.resize {
	GM_tty_ws_row = row
	GM_tty_ws_col = col
}

function game_tty_ws_row:long () {
	return GM_tty_ws_row
}

function game_tty_ws_col:long () {
	return GM_tty_ws_col
}