SCI: adding virtual lists for qfg-import rooms

now lists import files of all possible games, adds game title before that, removes game prefixes for all files

svn-id: r52441

8 files changed, 131 insertions, 80 deletions

diff --git a/engines/sci/engine/kfile.cpp b/engines/sci/engine/kfile.cpp
index a76c96cfea..2eb4580f4f 100644
--- a/engines/sci/engine/kfile.cpp
+++ b/engines/sci/engine/kfile.cpp
@@ -101,13 +101,9 @@ enum {
 
 
 
-reg_t file_open(EngineState *s, const char *filename, int mode) {
-	// QfG3 character import prepends /\ to the filenames.
-	if (filename[0] == '/' && filename[1] == '\\')
-		filename += 2;
-
+reg_t file_open(EngineState *s, const char *filename, int mode, bool unwrapFilename) {
 	Common::String englishName = g_sci->getSciLanguageString(filename, K_LANG_ENGLISH);
-	const Common::String wrappedName = g_sci->wrapFilename(englishName);
+	Common::String wrappedName = unwrapFilename ? g_sci->wrapFilename(englishName) : englishName;
 	Common::SeekableReadStream *inFile = 0;
 	Common::WriteStream *outFile = 0;
 	Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
@@ -183,7 +179,7 @@ reg_t kFOpen(EngineState *s, int argc, reg_t *argv) {
 	int mode = argv[1].toUint16();
 
 	debugC(2, kDebugLevelFile, "kFOpen(%s,0x%x)", name.c_str(), mode);
-	return file_open(s, name.c_str(), mode);
+	return file_open(s, name.c_str(), mode, true);
 }
 
 static FileHandle *getFileFromHandle(EngineState *s, uint handle) {
@@ -739,45 +735,6 @@ reg_t kValidPath(EngineState *s, int argc, reg_t *argv) {
 	return make_reg(0, 1);
 }
 
-reg_t DirSeeker::firstFile(const Common::String &mask, reg_t buffer, SegManager *segMan) {
-	// Verify that we are given a valid buffer
-	if (!buffer.segment) {
-		error("DirSeeker::firstFile('%s') invoked with invalid buffer", mask.c_str());
-		return NULL_REG;
-	}
-	_outbuffer = buffer;
-
-	// Prefix the mask
-	const Common::String wrappedMask = g_sci->wrapFilename(mask);
-
-	// Obtain a list of all savefiles matching the given mask
-	Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
-	_savefiles = saveFileMan->listSavefiles(wrappedMask);
-
-	// Reset the list iterator and write the first match to the output buffer,
-	// if any.
-	_iter = _savefiles.begin();
-	return nextFile(segMan);
-}
-
-reg_t DirSeeker::nextFile(SegManager *segMan) {
-	if (_iter == _savefiles.end()) {
-		return NULL_REG;
-	}
-
-	const Common::String wrappedString = *_iter;
-
-	// Strip the prefix
-	Common::String string = g_sci->unwrapFilename(wrappedString);
-	if (string.size() > 12)
-		string = Common::String(string.c_str(), 12);
-	segMan->strcpy(_outbuffer, string.c_str());
-
-	// Return the result and advance the list iterator :)
-	++_iter;
-	return _outbuffer;
-}
-
 reg_t kFileIO(EngineState *s, int argc, reg_t *argv) {
 	if (!s)
 		return make_reg(0, getSciVersion());
@@ -790,6 +747,7 @@ reg_t kFileIOOpen(EngineState *s, int argc, reg_t *argv) {
 	// SCI32 can call K_FILEIO_OPEN with only one argument. It seems to
 	// just be checking if it exists.
 	int mode = (argc < 2) ? (int)_K_FILE_MODE_OPEN_OR_FAIL : argv[1].toUint16();
+	bool unwrapFilename = true;
 
 	// SQ4 floppy prepends /\ to the filenames
 	if (name.hasPrefix("/\\")) {
@@ -813,6 +771,12 @@ reg_t kFileIOOpen(EngineState *s, int argc, reg_t *argv) {
 	}
 	debugC(2, kDebugLevelFile, "kFileIO(open): %s, 0x%x", name.c_str(), mode);
 
+	// QFG import rooms get a virtual filelisting instead of an actual one
+	if (g_sci->inQfGImportRoom()) {
+		// we need to find out what the user actually selected, "savedHeroes" is already destroyed
+		//  when we get here. That's why we need to remember selection via kDrawControl
+		name = s->_dirseeker.getVirtualFilename(s->_chosenQfGImportItem);
+		unwrapFilename = false;
 	// Since we're not wrapping/unwrapping save files for QFG import screens,
 	// the name of the save file will almost certainly be over 12 characters in
 	// length. Compensate for that fact here, by cutting off the last character
@@ -835,7 +799,7 @@ reg_t kFileIOOpen(EngineState *s, int argc, reg_t *argv) {
 		}
 	}
 
-	return file_open(s, name.c_str(), mode);
+	return file_open(s, name.c_str(), mode, unwrapFilename);
 }
 
 reg_t kFileIOClose(EngineState *s, int argc, reg_t *argv) {
@@ -962,24 +926,104 @@ reg_t kFileIOSeek(EngineState *s, int argc, reg_t *argv) {
 	return SIGNAL_REG;
 }
 
+void DirSeeker::addAsVirtualFiles(Common::String title, Common::String fileMask) {
+	Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
+	Common::StringArray foundFiles = saveFileMan->listSavefiles(fileMask);
+	if (!foundFiles.empty()) {
+		_files.push_back(title);
+		_virtualFiles.push_back("");
+		Common::StringArray::iterator it;
+		Common::StringArray::iterator it_end = foundFiles.end();
+		for (it = foundFiles.begin(); it != it_end; it++) {
+			Common::String regularFilename = *it;
+			Common::String wrappedFilename = Common::String(regularFilename.c_str() + fileMask.size() - 1);
+			// We need to remove the prefix for display purposes
+			_files.push_back(wrappedFilename);
+			// but remember the actual name as well
+			_virtualFiles.push_back(regularFilename);
+		}
+	}
+}
+
+Common::String DirSeeker::getVirtualFilename(uint fileNumber) {
+	if (fileNumber >= _virtualFiles.size())
+		error("invalid virtual filename access");
+	return _virtualFiles[fileNumber];
+}
+
+reg_t DirSeeker::firstFile(const Common::String &mask, reg_t buffer, SegManager *segMan) {
+	// Verify that we are given a valid buffer
+	if (!buffer.segment) {
+		error("DirSeeker::firstFile('%s') invoked with invalid buffer", mask.c_str());
+		return NULL_REG;
+	}
+	_outbuffer = buffer;
+	_files.clear();
+	_virtualFiles.clear();
+
+	int QfGImport = g_sci->inQfGImportRoom();
+	if (QfGImport) {
+		_files.clear();
+		addAsVirtualFiles("-QfG1-", "qfg1-*");
+		addAsVirtualFiles("-QfG1VGA-", "qfg1vga-*");
+		if (QfGImport > 2)
+			addAsVirtualFiles("-QfG2-", "qfg2-*");
+		if (QfGImport > 3)
+			addAsVirtualFiles("-QfG3-", "qfg3-*");
+
+		if (QfGImport == 3) {
+			// QfG3 sorts the filelisting itself, we can't let that happen otherwise our
+			//  virtual list would go out-of-sync
+			SegManager *segMan = g_sci->getEngineState()->_segMan;
+			reg_t savedHeros = segMan->findObjectByName("savedHeros");
+			if (!savedHeros.isNull())
+				writeSelectorValue(segMan, savedHeros, SELECTOR(sort), 0);
+		}
+
+	} else {
+		// Prefix the mask
+		const Common::String wrappedMask = g_sci->wrapFilename(mask);
+
+		// Obtain a list of all files matching the given mask
+		Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
+		_files = saveFileMan->listSavefiles(wrappedMask);
+	}
+
+	// Reset the list iterator and write the first match to the output buffer,
+	// if any.
+	_iter = _files.begin();
+	return nextFile(segMan);
+}
+
+reg_t DirSeeker::nextFile(SegManager *segMan) {
+	if (_iter == _files.end()) {
+		return NULL_REG;
+	}
+
+	Common::String string;
+
+	if (_virtualFiles.empty()) {
+		// Strip the prefix, if we don't got a virtual filelisting
+		const Common::String wrappedString = *_iter;
+		string = g_sci->unwrapFilename(wrappedString);
+	} else {
+		string = *_iter;
+	}
+	if (string.size() > 12)
+		string = Common::String(string.c_str(), 12);
+	segMan->strcpy(_outbuffer, string.c_str());
+
+	// Return the result and advance the list iterator :)
+	++_iter;
+	return _outbuffer;
+}
+
 reg_t kFileIOFindFirst(EngineState *s, int argc, reg_t *argv) {
 	Common::String mask = s->_segMan->getString(argv[0]);
 	reg_t buf = argv[1];
 	int attr = argv[2].toUint16(); // We won't use this, Win32 might, though...
 	debugC(2, kDebugLevelFile, "kFileIO(findFirst): %s, 0x%x", mask.c_str(), attr);
 
-	// Change the file mask in QFG character import screens. The game
-	// is looking for *.*, but that may well include other files as well,
-	// thus limit the file mask to only include exported characters.
-	if (g_sci->isQFGImportScreen())
-		mask = "qfg*.sav";
-
-	// QfG3 uses "/\*.*" for the character import, QfG4 uses "/\*"
-	if (mask.hasPrefix("/\\")) {
-		mask.deleteChar(0);
-		mask.deleteChar(0);
-	}
-
 	// We remove ".*". mask will get prefixed, so we will return all additional files for that gameid
 	if (mask == "*.*")
 		mask = "*";
diff --git a/engines/sci/engine/kgraphics.cpp b/engines/sci/engine/kgraphics.cpp
index 4e0306106b..e19a51b525 100644
--- a/engines/sci/engine/kgraphics.cpp
+++ b/engines/sci/engine/kgraphics.cpp
@@ -944,6 +944,7 @@ reg_t kDrawControl(EngineState *s, int argc, reg_t *argv) {
 						"for Quest for Glory 2. Example: 'qfg2-thief.sav'.");
 			}
 		}
+		s->_chosenQfGImportItem = readSelectorValue(s->_segMan, controlObject, SELECTOR(mark));
 	}
 
 	_k_GenericDrawControl(s, controlObject, false);
diff --git a/engines/sci/engine/selector.cpp b/engines/sci/engine/selector.cpp
index f5eb9eb73a..436a4b98ff 100644
--- a/engines/sci/engine/selector.cpp
+++ b/engines/sci/engine/selector.cpp
@@ -86,7 +86,8 @@ void Kernel::mapSelectors() {
 	// window
 	FIND_SELECTOR(cursor);
 	FIND_SELECTOR(max);
-	// mark
+	FIND_SELECTOR(mark);
+	FIND_SELECTOR(sort);
 	// who
 	FIND_SELECTOR(message);
 	// edit
diff --git a/engines/sci/engine/selector.h b/engines/sci/engine/selector.h
index 661290f58c..63ec11fab1 100644
--- a/engines/sci/engine/selector.h
+++ b/engines/sci/engine/selector.h
@@ -58,7 +58,9 @@ struct SelectorCache {
 	Selector state, font, type;///< Used by controls
 	// window
 	Selector cursor, max; ///< Used by EditControl
-	// mark, who
+	Selector mark; //< Used by list controls
+	Selector sort; //< Used by list controls (script internal, is needed by us for QfG3 import room)
+	// who
 	Selector message; ///< Used by GetEvent
 	// edit
 	Selector play; ///< Play function (first function to be called)
diff --git a/engines/sci/engine/state.cpp b/engines/sci/engine/state.cpp
index 5e0e7e21d5..bbdab6f7f0 100644
--- a/engines/sci/engine/state.cpp
+++ b/engines/sci/engine/state.cpp
@@ -110,6 +110,8 @@ void EngineState::reset(bool isRestoring) {
 	_lastSaveVirtualId = SAVEGAMEID_OFFICIALRANGE_START;
 	_lastSaveNewId = 0;
 
+	_chosenQfGImportItem = 0;
+
 	scriptStepCounter = 0;
 	scriptGCInterval = GC_INTERVAL;
 }
diff --git a/engines/sci/engine/state.h b/engines/sci/engine/state.h
index ca5232022e..42294fa08c 100644
--- a/engines/sci/engine/state.h
+++ b/engines/sci/engine/state.h
@@ -59,17 +59,23 @@ enum AbortGameState {
 class DirSeeker {
 protected:
 	reg_t _outbuffer;
-	Common::StringArray _savefiles;
+	Common::StringArray _files;
+	Common::StringArray _virtualFiles;
 	Common::StringArray::const_iterator _iter;
 
 public:
 	DirSeeker() {
 		_outbuffer = NULL_REG;
-		_iter = _savefiles.begin();
+		_iter = _files.begin();
 	}
 
 	reg_t firstFile(const Common::String &mask, reg_t buffer, SegManager *segMan);
 	reg_t nextFile(SegManager *segMan);
+
+	Common::String getVirtualFilename(uint fileNumber);
+
+private:
+	void addAsVirtualFiles(Common::String title, Common::String fileMask);
 };
 
 enum {
@@ -139,6 +145,8 @@ public:
 	int16 _lastSaveVirtualId; // last virtual id fed to kSaveGame, if no kGetSaveFiles was called inbetween
 	int16 _lastSaveNewId;    // last newly created filename-id by kSaveGame
 
+	uint _chosenQfGImportItem; // Remembers the item selected in QfG import rooms
+
 public:
 	/* VM Information */
 
diff --git a/engines/sci/sci.cpp b/engines/sci/sci.cpp
index cb36ebd0f5..f9f89ea1ae 100644
--- a/engines/sci/sci.cpp
+++ b/engines/sci/sci.cpp
@@ -641,34 +641,27 @@ Common::String SciEngine::getFilePrefix() const {
 }
 
 Common::String SciEngine::wrapFilename(const Common::String &name) const {
-	// Do not wrap the game prefix when reading files in QFG import screens.
-	// That way, we can read exported characters from all QFG games, as
-	// intended.
-	return !isQFGImportScreen() ? getFilePrefix() + "-" + name : name;
+	return getFilePrefix() + "-" + name;
 }
 
 Common::String SciEngine::unwrapFilename(const Common::String &name) const {
 	Common::String prefix = getFilePrefix() + "-";
-	// Do not unwrap the file name when reading files in QFG import screens.
-	// We don't wrap the game ID prefix in these screens in order to read
-	// save states from all QFG games.
-	if (name.hasPrefix(prefix.c_str()) && !isQFGImportScreen())
+	if (name.hasPrefix(prefix.c_str()))
 		return Common::String(name.c_str() + prefix.size());
 	return name;
 }
 
-bool SciEngine::isQFGImportScreen() const {
+int SciEngine::inQfGImportRoom() const {
 	if (_gameId == GID_QFG2 && _gamestate->currentRoomNumber() == 805) {
 		// QFG2 character import screen
-		return true;
+		return 2;
 	} else if (_gameId == GID_QFG3 && _gamestate->currentRoomNumber() == 54) {
 		// QFG3 character import screen
-		return true;
+		return 3;
 	} else if (_gameId == GID_QFG4 && _gamestate->currentRoomNumber() == 54) {
-		return true;
-	} else {
-		return false;
+		return 4;
 	}
+	return 0;
 }
 
 void SciEngine::pauseEngineIntern(bool pause) {
diff --git a/engines/sci/sci.h b/engines/sci/sci.h
index aaa53367a7..a620f6cd09 100644
--- a/engines/sci/sci.h
+++ b/engines/sci/sci.h
@@ -251,10 +251,10 @@ public:
 	Common::String unwrapFilename(const Common::String &name) const;
 
 	/**
-	 * Checks if we are in a QFG import screen, where special handling
-	 * of save states is performed.
+	 * Checks if we are in a QfG import screen, where special handling
+	 * of file-listings is performed.
 	 */
-	bool isQFGImportScreen() const;
+	int inQfGImportRoom() const;
 
 	void sleep(uint32 msecs);