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st_start.cpp
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/
st_start.cpp
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/*
** st_start.cpp
** Handles the startup screen.
**
**---------------------------------------------------------------------------
** Copyright 2006-2007 Randy Heit
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
// HEADER FILES ------------------------------------------------------------
#include <unistd.h>
#include <sys/time.h>
#include <termios.h>
#include "st_start.h"
#include "doomdef.h"
#include "i_system.h"
#include "c_cvars.h"
#include "atterm.h"
// MACROS ------------------------------------------------------------------
// TYPES -------------------------------------------------------------------
class FTTYStartupScreen : public FStartupScreen
{
public:
FTTYStartupScreen(int max_progress);
~FTTYStartupScreen();
void Progress();
void NetInit(const char *message, int num_players);
void NetProgress(int count);
void NetMessage(const char *format, ...); // cover for printf
void NetDone();
bool NetLoop(bool (*timer_callback)(void *), void *userdata);
protected:
bool DidNetInit;
int NetMaxPos, NetCurPos;
const char *TheNetMessage;
termios OldTermIOS;
};
// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
void I_ShutdownJoysticks();
// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
static void DeleteStartupScreen();
// EXTERNAL DATA DECLARATIONS ----------------------------------------------
// PUBLIC DATA DEFINITIONS -------------------------------------------------
FStartupScreen *StartScreen;
CUSTOM_CVAR(Int, showendoom, 0, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
{
if (self < 0) self = 0;
else if (self > 2) self=2;
}
// PRIVATE DATA DEFINITIONS ------------------------------------------------
static const char SpinnyProgressChars[4] = { '|', '/', '-', '\\' };
// CODE --------------------------------------------------------------------
//==========================================================================
//
// FStartupScreen :: CreateInstance
//
// Initializes the startup screen for the detected game.
// Sets the size of the progress bar and displays the startup screen.
//
//==========================================================================
FStartupScreen *FStartupScreen::CreateInstance(int max_progress)
{
atterm(DeleteStartupScreen);
return new FTTYStartupScreen(max_progress);
}
//===========================================================================
//
// DeleteStartupScreen
//
// Makes sure the startup screen has been deleted before quitting.
//
//===========================================================================
void DeleteStartupScreen()
{
if (StartScreen != NULL)
{
delete StartScreen;
StartScreen = NULL;
}
}
//===========================================================================
//
// FTTYStartupScreen Constructor
//
// Sets the size of the progress bar and displays the startup screen.
//
//===========================================================================
FTTYStartupScreen::FTTYStartupScreen(int max_progress)
: FStartupScreen(max_progress)
{
DidNetInit = false;
NetMaxPos = 0;
NetCurPos = 0;
TheNetMessage = NULL;
}
//===========================================================================
//
// FTTYStartupScreen Destructor
//
// Called just before entering graphics mode to deconstruct the startup
// screen.
//
//===========================================================================
FTTYStartupScreen::~FTTYStartupScreen()
{
NetDone(); // Just in case it wasn't called yet and needs to be.
}
//===========================================================================
//
// FTTYStartupScreen :: Progress
//
// If there was a progress bar, this would move it. But the basic TTY
// startup screen doesn't have one, so this function does nothing.
//
//===========================================================================
void FTTYStartupScreen::Progress()
{
}
//===========================================================================
//
// FTTYStartupScreen :: NetInit
//
// Sets stdin for unbuffered I/O, displays the given message, and shows
// a progress meter.
//
//===========================================================================
void FTTYStartupScreen::NetInit(const char *message, int numplayers)
{
if (!DidNetInit)
{
termios rawtermios;
fprintf (stderr, "Press 'Q' to abort network game synchronization.");
// Set stdin to raw mode so we can get keypresses in ST_CheckNetAbort()
// immediately without waiting for an EOL.
tcgetattr (STDIN_FILENO, &OldTermIOS);
rawtermios = OldTermIOS;
rawtermios.c_lflag &= ~(ICANON | ECHO);
tcsetattr (STDIN_FILENO, TCSANOW, &rawtermios);
DidNetInit = true;
}
if (numplayers == 1)
{
// Status message without any real progress info.
fprintf (stderr, "\n%s.", message);
}
else
{
fprintf (stderr, "\n%s: ", message);
}
fflush (stderr);
TheNetMessage = message;
NetMaxPos = numplayers;
NetCurPos = 0;
NetProgress(1); // You always know about yourself
}
//===========================================================================
//
// FTTYStartupScreen :: NetDone
//
// Restores the old stdin tty settings.
//
//===========================================================================
void FTTYStartupScreen::NetDone()
{
// Restore stdin settings
if (DidNetInit)
{
tcsetattr (STDIN_FILENO, TCSANOW, &OldTermIOS);
printf ("\n");
DidNetInit = false;
}
}
//===========================================================================
//
// FTTYStartupScreen :: NetMessage
//
// Call this between NetInit() and NetDone() instead of Printf() to
// display messages, because the progress meter is mixed in the same output
// stream as normal messages.
//
//===========================================================================
void FTTYStartupScreen::NetMessage(const char *format, ...)
{
FString str;
va_list argptr;
va_start (argptr, format);
str.VFormat (format, argptr);
va_end (argptr);
fprintf (stderr, "\r%-40s\n", str.GetChars());
}
//===========================================================================
//
// FTTYStartupScreen :: NetProgress
//
// Sets the network progress meter. If count is 0, it gets bumped by 1.
// Otherwise, it is set to count.
//
//===========================================================================
void FTTYStartupScreen::NetProgress(int count)
{
int i;
if (count == 0)
{
NetCurPos++;
}
else if (count > 0)
{
NetCurPos = count;
}
if (NetMaxPos == 0)
{
// Spinny-type progress meter, because we're a guest waiting for the host.
fprintf (stderr, "\r%s: %c", TheNetMessage, SpinnyProgressChars[NetCurPos & 3]);
fflush (stderr);
}
else if (NetMaxPos > 1)
{
// Dotty-type progress meter.
fprintf (stderr, "\r%s: ", TheNetMessage);
for (i = 0; i < NetCurPos; ++i)
{
fputc ('.', stderr);
}
fprintf (stderr, "%*c[%2d/%2d]", NetMaxPos + 1 - NetCurPos, ' ', NetCurPos, NetMaxPos);
fflush (stderr);
}
}
//===========================================================================
//
// FTTYStartupScreen :: NetLoop
//
// The timer_callback function is called at least two times per second
// and passed the userdata value. It should return true to stop the loop and
// return control to the caller or false to continue the loop.
//
// ST_NetLoop will return true if the loop was halted by the callback and
// false if the loop was halted because the user wants to abort the
// network synchronization.
//
//===========================================================================
bool FTTYStartupScreen::NetLoop(bool (*timer_callback)(void *), void *userdata)
{
fd_set rfds;
struct timeval tv;
int retval;
char k;
for (;;)
{
// Don't flood the network with packets on startup.
tv.tv_sec = 0;
tv.tv_usec = 500000;
FD_ZERO (&rfds);
FD_SET (STDIN_FILENO, &rfds);
retval = select (1, &rfds, NULL, NULL, &tv);
if (retval == -1)
{
// Error
}
else if (retval == 0)
{
if (timer_callback (userdata))
{
fputc ('\n', stderr);
return true;
}
}
else if (read (STDIN_FILENO, &k, 1) == 1)
{
// Check input on stdin
if (k == 'q' || k == 'Q')
{
fprintf (stderr, "\nNetwork game synchronization aborted.");
return false;
}
}
}
}
void ST_Endoom()
{
I_ShutdownJoysticks();
throw CExitEvent(0);
}