quadrilateralcowboy/framework/EventLoop.cpp

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2020-06-12 21:06:25 +00:00
/*
===========================================================================
Doom 3 GPL Source Code
Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
This file is part of the Doom 3 GPL Source Code (?Doom 3 Source Code?).
Doom 3 Source Code is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Doom 3 Source Code is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
===========================================================================
*/
#include "../idlib/precompiled.h"
#pragma hdrstop
idCVar idEventLoop::com_journal( "com_journal", "0", CVAR_INIT|CVAR_SYSTEM, "1 = record journal, 2 = play back journal", 0, 2, idCmdSystem::ArgCompletion_Integer<0,2> );
idEventLoop eventLoopLocal;
idEventLoop *eventLoop = &eventLoopLocal;
/*
=================
idEventLoop::idEventLoop
=================
*/
idEventLoop::idEventLoop( void ) {
com_journalFile = NULL;
com_journalDataFile = NULL;
initialTimeOffset = 0;
}
/*
=================
idEventLoop::~idEventLoop
=================
*/
idEventLoop::~idEventLoop( void ) {
}
/*
=================
idEventLoop::GetRealEvent
=================
*/
sysEvent_t idEventLoop::GetRealEvent( void ) {
int r;
sysEvent_t ev;
// either get an event from the system or the journal file
if ( com_journal.GetInteger() == 2 ) {
r = com_journalFile->Read( &ev, sizeof(ev) );
if ( r != sizeof(ev) ) {
common->FatalError( "Error reading from journal file" );
}
if ( ev.evPtrLength ) {
ev.evPtr = Mem_ClearedAlloc( ev.evPtrLength );
r = com_journalFile->Read( ev.evPtr, ev.evPtrLength );
if ( r != ev.evPtrLength ) {
common->FatalError( "Error reading from journal file" );
}
}
} else {
ev = Sys_GetEvent();
// write the journal value out if needed
if ( com_journal.GetInteger() == 1 ) {
r = com_journalFile->Write( &ev, sizeof(ev) );
if ( r != sizeof(ev) ) {
common->FatalError( "Error writing to journal file" );
}
if ( ev.evPtrLength ) {
r = com_journalFile->Write( ev.evPtr, ev.evPtrLength );
if ( r != ev.evPtrLength ) {
common->FatalError( "Error writing to journal file" );
}
}
}
}
return ev;
}
/*
=================
idEventLoop::PushEvent
=================
*/
void idEventLoop::PushEvent( sysEvent_t *event ) {
sysEvent_t *ev;
static bool printedWarning;
ev = &com_pushedEvents[ com_pushedEventsHead & (MAX_PUSHED_EVENTS-1) ];
if ( com_pushedEventsHead - com_pushedEventsTail >= MAX_PUSHED_EVENTS ) {
// don't print the warning constantly, or it can give time for more...
if ( !printedWarning ) {
printedWarning = true;
common->Printf( "WARNING: Com_PushEvent overflow\n" );
}
if ( ev->evPtr ) {
Mem_Free( ev->evPtr );
}
com_pushedEventsTail++;
} else {
printedWarning = false;
}
*ev = *event;
com_pushedEventsHead++;
}
/*
=================
idEventLoop::GetEvent
=================
*/
sysEvent_t idEventLoop::GetEvent( void ) {
if ( com_pushedEventsHead > com_pushedEventsTail ) {
com_pushedEventsTail++;
return com_pushedEvents[ (com_pushedEventsTail-1) & (MAX_PUSHED_EVENTS-1) ];
}
return GetRealEvent();
}
/*
=================
idEventLoop::ProcessEvent
=================
*/
void idEventLoop::ProcessEvent( sysEvent_t ev ) {
// track key up / down states
if ( ev.evType == SE_KEY ) {
idKeyInput::PreliminaryKeyEvent( ev.evValue, ( ev.evValue2 != 0 ) );
}
if ( ev.evType == SE_CONSOLE ) {
// from a text console outside the game window
cmdSystem->BufferCommandText( CMD_EXEC_APPEND, (char *)ev.evPtr );
cmdSystem->BufferCommandText( CMD_EXEC_APPEND, "\n" );
} else {
session->ProcessEvent( &ev );
}
// free any block data
if ( ev.evPtr ) {
Mem_Free( ev.evPtr );
}
}
/*
===============
idEventLoop::RunEventLoop
===============
*/
int idEventLoop::RunEventLoop( bool commandExecution ) {
sysEvent_t ev;
while ( 1 ) {
if ( commandExecution ) {
// execute any bound commands before processing another event
cmdSystem->ExecuteCommandBuffer();
}
ev = GetEvent();
// if no more events are available
if ( ev.evType == SE_NONE ) {
return 0;
}
ProcessEvent( ev );
}
return 0; // never reached
}
/*
=============
idEventLoop::Init
=============
*/
void idEventLoop::Init( void ) {
initialTimeOffset = Sys_Milliseconds();
common->StartupVariable( "journal", false );
if ( com_journal.GetInteger() == 1 ) {
common->Printf( "Journaling events\n" );
com_journalFile = fileSystem->OpenFileWrite( "journal.dat" );
com_journalDataFile = fileSystem->OpenFileWrite( "journaldata.dat" );
} else if ( com_journal.GetInteger() == 2 ) {
common->Printf( "Replaying journaled events\n" );
com_journalFile = fileSystem->OpenFileRead( "journal.dat" );
com_journalDataFile = fileSystem->OpenFileRead( "journaldata.dat" );
}
if ( !com_journalFile || !com_journalDataFile ) {
com_journal.SetInteger( 0 );
com_journalFile = 0;
com_journalDataFile = 0;
common->Printf( "Couldn't open journal files\n" );
}
}
/*
=============
idEventLoop::Shutdown
=============
*/
void idEventLoop::Shutdown( void ) {
if ( com_journalFile ) {
fileSystem->CloseFile( com_journalFile );
com_journalFile = NULL;
}
if ( com_journalDataFile ) {
fileSystem->CloseFile( com_journalDataFile );
com_journalDataFile = NULL;
}
}
/*
================
idEventLoop::Milliseconds
Can be used for profiling, but will be journaled accurately
================
*/
int idEventLoop::Milliseconds( void ) {
#if 1 // FIXME!
return Sys_Milliseconds() - initialTimeOffset;
#else
sysEvent_t ev;
// get events and push them until we get a null event with the current time
do {
ev = Com_GetRealEvent();
if ( ev.evType != SE_NONE ) {
Com_PushEvent( &ev );
}
} while ( ev.evType != SE_NONE );
return ev.evTime;
#endif
}
/*
================
idEventLoop::JournalLevel
================
*/
int idEventLoop::JournalLevel( void ) const {
return com_journal.GetInteger();
}