DIRECTOR: Add basic v3-5 exe parsing

1 files changed, 101 insertions, 0 deletions

diff --git a/engines/director/director.cpp b/engines/director/director.cpp
index 840692ae7f..7fe0c6966a 100644
--- a/engines/director/director.cpp
+++ b/engines/director/director.cpp
@@ -22,12 +22,15 @@
 
 #include "audio/mixer.h"
 
+#include "common/debug.h"
 #include "common/scummsys.h"
 #include "common/error.h"
+#include "common/stream.h"
 #include "common/system.h"
 #include "common/textconsole.h"
 
 #include "director/director.h"
+#include "director/resource.h"
 
 namespace Director {
 
@@ -37,13 +40,111 @@ DirectorEngine::DirectorEngine(OSystem *syst, const DirectorGameDescription *gam
 
 	// Setup mixer
 	syncSoundSettings();
+
+	_mainArchive = 0;
 }
 
 DirectorEngine::~DirectorEngine() {
+	delete _mainArchive;
 }
 
 Common::Error DirectorEngine::run() {
+	debug("Starting v%d Director game", getVersion());
+
+	if (getPlatform() == Common::kPlatformWindows)
+		loadEXE();
+
 	return Common::kNoError;
 }
 
+void DirectorEngine::loadEXE() {
+	Common::SeekableReadStream *exeStream = SearchMan.createReadStreamForMember(getEXEName());
+	if (!exeStream)
+		error("Failed to open EXE '%s'", getEXEName().c_str());
+
+	exeStream->seek(-4, SEEK_END);
+	exeStream->seek(exeStream->readUint32LE());
+
+	switch (getVersion()) {
+	case 3:
+		loadEXEv3(exeStream);
+		break;
+	case 4:
+		loadEXEv4(exeStream);
+		break;
+	case 5:
+		loadEXEv5(exeStream);
+		break;
+	}
+}
+
+void DirectorEngine::loadEXEv3(Common::SeekableReadStream *stream) {
+	stream->readUint32LE(); // unknown
+	stream->readUint16LE(); // unknown
+	stream->readUint32LE(); // Main MMM size
+	stream->readByte();     // zero
+	Common::String mmmFileName = readPascalString(*stream);
+	Common::String directoryName = readPascalString(*stream);
+
+	debug("Main MMM: '%s'", mmmFileName.c_str());
+	debug("Directory Name: '%s'", directoryName.c_str());
+
+	_mainArchive = new RIFFArchive();
+
+	// TODO: Convert MMM name and load
+
+	delete stream;
+}
+
+void DirectorEngine::loadEXEv4(Common::SeekableReadStream *stream) {
+	if (stream->readUint32BE() != MKTAG('P', 'J', '9', '3'))
+		error("Invalid projector tag found in v4 EXE");
+
+	uint32 rifxOffset = stream->readUint32LE();
+	/* uint32 fontMapOffset = */ stream->readUint32LE();
+	/* uint32 resourceForkOffset1 = */ stream->readUint32LE();
+	/* uint32 resourceForkOffset2 = */ stream->readUint32LE();
+	stream->readUint32LE(); // graphics DLL offset
+	stream->readUint32LE(); // sound DLL offset
+	/* uint32 rifxOffsetAlt = */ stream->readUint32LE(); // equivalent to rifxOffset
+
+	loadEXERIFX(stream, rifxOffset);
+}
+
+void DirectorEngine::loadEXEv5(Common::SeekableReadStream *stream) {
+	if (stream->readUint32LE() != MKTAG('P', 'J', '9', '5'))
+		error("Invalid projector tag found in v5 EXE");
+
+	uint32 rifxOffset = stream->readUint32LE();
+	stream->readUint32LE(); // unknown
+	stream->readUint32LE(); // unknown
+	stream->readUint32LE(); // unknown
+	/* uint16 screenWidth = */ stream->readUint16LE();
+	/* uint16 screenHeight = */ stream->readUint16LE();
+	stream->readUint32LE(); // unknown
+	stream->readUint32LE(); // unknown
+	/* uint32 fontMapOffset = */ stream->readUint32LE();
+
+	loadEXERIFX(stream, rifxOffset);
+}
+
+void DirectorEngine::loadEXERIFX(Common::SeekableReadStream *stream, uint32 offset) {
+	stream->seek(offset);
+
+	_mainArchive = new RIFXArchive();
+
+	if (!_mainArchive->openStream(stream))
+		error("Failed to load RIFX from EXE");
+}
+
+Common::String DirectorEngine::readPascalString(Common::SeekableReadStream &stream) {
+	byte length = stream.readByte();
+	Common::String x;
+
+	while (length--)
+		x += (char)stream.readByte();
+
+	return x;
+}
+
 } // End of namespace Director