ExtFunc void CloseRobot(void)
{
RemoveEventGen(&robotGen);
if (robotProcess > 0)
RobotCmd(1, "Exit\n");
fclose(toRobot);
close(fromRobotFd);
}
ExtFunc int RefreshBoard(int scr)
{
int y, x, any = 0;
unsigned int c;
BlockType b;
for (y = boardVisible[scr] - 1; y >= 0; --y)
if ((c = changed[scr][y])) {
if (robotEnable) {
RobotCmd(0, "RowUpdate %d %d", scr, y);
for (x = 0; x < boardWidth[scr]; ++x) {
b = board[scr][y][x];
if (fairRobot)
b = abs(b);
RobotCmd(0, " %d", b);
}
RobotCmd(0, "\n");
}
changed[scr][y] = 0;
any = 1;
for (x = 0; c; (c >>= 1), (++x))
if ((c & 1) && B_OLD(board[scr][y][x])!=oldBoard[scr][y][x]) {
PlotBlock(scr, y, x, B_OLD(board[scr][y][x]));
oldBoard[scr][y][x] = B_OLD(board[scr][y][x]);
}
}
if (robotEnable)
RobotTimeStamp();
for (x = 0; x < boardWidth[scr]; ++x)
if (oldFalling[scr][x] != !!falling[scr][x]) {
oldFalling[scr][x] = !!falling[scr][x];
PlotUnderline(scr, x, oldFalling[scr][x]);
any = 1;
}
return any;
}
ExtFunc void InitRobot(char *robotProg)
{
int to[2], from[2];
int status;
MyEvent event;
signal(SIGPIPE, CatchPipe);
AtExit(CloseRobot);
if (pipe(to) || pipe(from))
die("pipe");
robotProcess = fork();
if (robotProcess < 0)
die("fork");
if (robotProcess == 0) {
dup2(to[0], STDIN_FILENO);
dup2(from[1], STDOUT_FILENO);
close(to[0]);
close(to[1]);
close(from[0]);
close(from[1]);
execl("/bin/sh", "sh", "-c", robotProg, NULL);
die("execl failed");
}
close(to[0]);
close(from[1]);
toRobotFd = to[1];
robotGen.fd = fromRobotFd = from[0];
if (!(toRobot = fdopen(toRobotFd, "w")))
die("fdopen");
if ((status = fcntl(fromRobotFd, F_GETFL, 0)) < 0)
die("fcntl/F_GETFL");
status |= O_NONBLOCK;
if (fcntl(fromRobotFd, F_SETFL, status) < 0)
die("fcntl/F_SETFL");
AddEventGen(&robotGen);
RobotCmd(1, "Version %d\n", ROBOT_VERSION);
if (WaitMyEvent(&event, EM_robot) != E_robot)
fatal("Robot didn't start successfully");
if (1 > sscanf(event.u.robot.data, "Version %d", &robotVersion)
|| robotVersion < 1)
fatal("Invalid Version line from robot");
if (robotVersion > ROBOT_VERSION)
robotVersion = ROBOT_VERSION;
}
ExtFunc void RobotTimeStamp(void)
{
RobotCmd(1, "TimeStamp %.3f\n", CurTimeval() / 1.0e6);
}
