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