--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/demo.cpp Wed Jul 17 18:46:47 2013 +0300
@@ -0,0 +1,218 @@
+#include <QFile>
+#include <QDataStream>
+#include <QMessageBox>
+#include <QProcess>
+#include "demo.h"
+#include "bytestream.h"
+#include "misc.h"
+
+static const uint32 g_demoSignature = makeByteID( 'Z', 'C', 'L', 'D' );
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+static str tr( const char* msg ) {
+ return QObject::tr( msg );
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+static void error( str msg ) {
+ QMessageBox::critical( null, "Error", msg );
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+static int getVersionIndex( str ver ) {
+ int i;
+
+ for( i = 0; i < g_zanVersions.size(); ++i )
+ if( g_zanVersions[i] == ver )
+ return i;
+
+ return -1;
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+static str findWAD( str name ) {
+ QSettings cfg;
+ list<var> paths = cfg.value( "wads/paths", list<var>() ).toList();
+
+ if( paths.size() == 0 ) {
+ error( tr( "No WAD paths configured!" ));
+ exit( 9 );
+ }
+
+ for( var it : paths ) {
+ str fullpath = fmt( "%1/%2", it.toString(), name );
+ QFile f( fullpath );
+
+ if( f.exists() )
+ return fullpath;
+ }
+
+ return "";
+}
+
+// =============================================================================
+// -----------------------------------------------------------------------------
+int launchDemo( str path ) {
+ FILE* fp = fopen( path.toStdString().c_str(), "r" );
+
+ if( !fp ) {
+ error( fmt( tr( "Couldn't open '%1' for reading: %2" ), path, strerror( errno )));
+ return 1;
+ }
+
+ fseek( fp, 0, SEEK_END );
+ const size_t fsize = ftell( fp );
+ rewind( fp );
+
+ char* buf = new char[fsize];
+
+ if( fread( buf, 1, fsize, fp ) != fsize ) {
+ error( tr( "I/O error" ));
+ delete[] buf;
+ return 2;
+ }
+
+ Bytestream s( buf, fsize );
+ delete[] buf;
+
+ uint8 offset;
+ uint32 length;
+
+ struct {
+ str netname, skin, className;
+ uint8 gender, handicap, unlagged, respawnOnFire, ticsPerUpdate, connectionType;
+ uint32 color, aimdist, railcolor;
+ } userinfo;
+
+ // Check signature
+ {
+ uint32 sig;
+
+ if( !s.readLong( sig ) || sig != g_demoSignature ) {
+ error( fmt( tr( "'%1' is not a Zandronum demo file!" ), path ));
+ return 3;
+ }
+ }
+
+ // Zandronum stores CLD_DEMOLENGTH after the signature. This is also the
+ // first demo enumerator, so we can determine the offset (which is variable!)
+ // from this byte
+ s.readByte( offset );
+ s.readLong( length );
+
+ uint16 zanversionID, numWads;
+ uint32 longSink;
+ str zanversion;
+ list<str> wads;
+ bool ready = false;
+
+ for( ;; ) {
+ uint8 header;
+ if( !s.readByte( header ))
+ break;
+
+ if( header == DemoBodyStart + offset ) {
+ ready = true;
+ break;
+ } elif( header == DemoVersion + offset ) {
+ s.readShort( zanversionID );
+ s.readString( zanversion );
+ s.readLong( longSink ); // rng seed - we don't need it
+ } elif( header == DemoUserInfo + offset ) {
+ s.readString( userinfo.netname );
+ s.readByte( userinfo.gender );
+ s.readLong( userinfo.color );
+ s.readLong( userinfo.aimdist );
+ s.readString( userinfo.skin );
+ s.readLong( userinfo.railcolor );
+ s.readByte( userinfo.handicap );
+ s.readByte( userinfo.unlagged );
+ s.readByte( userinfo.respawnOnFire );
+ s.readByte( userinfo.connectionType );
+ s.readString( userinfo.className );
+ } elif( header == DemoWads + offset ) {
+ s.readShort( numWads );
+
+ for( uint8 i = 0; i < numWads; ++i ) {
+ str wad;
+ s.readString( wad );
+ wads << wad;
+ }
+
+ // The demo has two checksum strings. We're not interested
+ // in them though.
+ str sink;
+ for( int i = 0; i < 2; ++i )
+ s.readString( sink );
+ } else {
+ error( fmt( tr( "Unknown header %1!\n" ), (int) header ));
+ return 4;
+ }
+ }
+
+ if( !ready ) {
+ error( fmt( tr( "Incomplete demo header in '%s'!" ), path ));
+ return 5;
+ }
+
+ int i = getVersionIndex( zanversion );
+ if( i == -1 ) {
+ error( fmt( tr( "Unknown Zandronum version %1!\n" ), zanversion ));
+ return 6;
+ }
+
+ QSettings cfg;
+ str binarypath = cfg.value( binaryConfigName( zanversion )).toString();
+
+ if( binarypath.isEmpty() ) {
+ error( fmt( tr( "No binary path specified for Zandronum version %1!\n" ), zanversion ));
+ return 7;
+ }
+
+ str iwadpath;
+ list<str> pwadpaths;
+
+ // Find the WADs
+ for( const str& wad : wads ) {
+ str path = findWAD( wad );
+
+ // IWAD names can appear in uppercase too. Linux is case-sensitive, so..
+ if( &wad == &wads[0] && path.isEmpty() )
+ path = findWAD( wad.toUpper() );
+
+ if( path.isEmpty() ) {
+ error( fmt( tr( "Couldn't find %1!\n" ), wad ));
+ return 8;
+ }
+
+ if( &wad == &wads[0] )
+ iwadpath = path;
+ else
+ pwadpaths << path;
+ }
+
+ print( "binary: %1\n", binarypath );
+ print( "iwad: %1\npwads: %2\n", iwadpath, pwadpaths );
+
+ QStringList cmdlineList ({
+ "-iwad",
+ iwadpath,
+ "-playdemo",
+ path
+ });
+
+ if( pwadpaths.size() > 0 ) {
+ cmdlineList << "-file";
+ cmdlineList << pwadpaths;
+ }
+
+ print( "commandline: %1 %2\n", binarypath, cmdlineList.join( " " ));
+ QProcess* proc = new QProcess;
+ proc->start( binarypath, cmdlineList );
+ proc->waitForFinished( -1 );
+ return 0;
+}
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