4 files changed, 55 insertions, 8 deletions

diff --git a/engines/zvision/file/lzss_read_stream.cpp b/engines/zvision/file/lzss_read_stream.cpp
index 6f27eaa765..ca10af7d72 100644
--- a/engines/zvision/file/lzss_read_stream.cpp
+++ b/engines/zvision/file/lzss_read_stream.cpp
@@ -31,8 +31,9 @@ LzssReadStream::LzssReadStream(Common::SeekableReadStream *source)
 	  // It's convention to set the starting cursor position to blockSize - 16
 	  _windowCursor(0x0FEE),
 	  _eosFlag(false) {
-	// Clear the window to null
-	memset(_window, 0, BLOCK_SIZE);
+	// All values up to _windowCursor inits by 0x20
+	memset(_window, 0x20, _windowCursor);
+	memset(_window + _windowCursor, 0, BLOCK_SIZE - _windowCursor);
 }
 
 uint32 LzssReadStream::decompressBytes(byte *destination, uint32 numberOfBytes) {
diff --git a/engines/zvision/file/save_manager.cpp b/engines/zvision/file/save_manager.cpp
index fb9cceecbe..d169679e28 100644
--- a/engines/zvision/file/save_manager.cpp
+++ b/engines/zvision/file/save_manager.cpp
@@ -130,12 +130,27 @@ void SaveManager::writeSaveGameHeader(Common::OutSaveFile *file, const Common::S
 	file->writeSint16LE(td.tm_min);
 }
 
-Common::Error SaveManager::loadGame(uint slot) {
-	Common::SeekableReadStream *saveFile = getSlotFile(slot);
-	if (saveFile == 0) {
-		return Common::kPathDoesNotExist;
+Common::Error SaveManager::loadGame(int slot) {
+	Common::SeekableReadStream *saveFile = NULL;
+
+	if (slot >= 0) {
+		saveFile = getSlotFile(slot);
+	} else {
+		saveFile = _engine->getSearchManager()->openFile("r.svr");
+		if (!saveFile) {
+			Common::File *restoreFile = new Common::File();
+			if (!restoreFile->open("r.svr")) {
+				delete restoreFile;
+				return Common::kPathDoesNotExist;
+			}
+
+			saveFile = restoreFile;
+		}
 	}
 
+	if (!saveFile)
+		return Common::kPathDoesNotExist;
+
 	// Read the header
 	SaveGameHeader header;
 	if (!readSaveGameHeader(saveFile, header)) {
@@ -150,6 +165,27 @@ Common::Error SaveManager::loadGame(uint slot) {
 	if (header.thumbnail)
 		delete header.thumbnail;
 
+	if (_engine->getGameId() == GID_NEMESIS && scriptManager->getCurrentLocation() == "tv2f") {
+		// WORKAROUND for script bug #6793: location tv2f (stairs) has two states:
+		// one at the top of the stairs, and one at the bottom. When the player
+		// goes to the bottom of the stairs, the screen changes, and hotspot
+		// 4652 (exit opposite the stairs) is enabled. However, the variable that
+		// controls the state (2408) is reset when the player goes down the stairs.
+		// Furthermore, the room's initialization script disables the stair exit
+		// control (4652). This leads to an impossible situation, where all the
+		// exit controls are disabled, and the player can't more anywhere. Thus,
+		// when loading a game in that room, we check for that impossible
+		// situation, which only occurs after the player has moved down the stairs,
+		// and fix it here by setting the correct background, and enabling the
+		// stair exit hotspot.
+		if ((scriptManager->getStateFlag(2411) & Puzzle::DISABLED) &&
+			(scriptManager->getStateFlag(2408) & Puzzle::DISABLED) &&
+			(scriptManager->getStateFlag(4652) & Puzzle::DISABLED)) {
+			_engine->getRenderManager()->setBackgroundImage("tv2fb21c.tga");
+			scriptManager->unsetStateFlag(4652, Puzzle::DISABLED);
+		}
+	}
+
 	return Common::kNoError;
 }
 
@@ -169,7 +205,7 @@ bool SaveManager::readSaveGameHeader(Common::InSaveFile *in, SaveGameHeader &hea
 		return true;
 	}
 	if (tag != SAVEGAME_ID) {
-		warning("File is not a ZVision save file. Aborting load");
+		warning("File is not a Z-Vision save file. Aborting load");
 		return false;
 	}
 
diff --git a/engines/zvision/file/save_manager.h b/engines/zvision/file/save_manager.h
index d3f6aaaedc..9e816373ea 100644
--- a/engines/zvision/file/save_manager.h
+++ b/engines/zvision/file/save_manager.h
@@ -91,7 +91,7 @@ public:
 	 *
 	 * @param slot    The save slot to load. Must be [1, 20]
 	 */
-	Common::Error loadGame(uint slot);
+	Common::Error loadGame(int slot);
 
 	Common::SeekableReadStream *getSlotFile(uint slot);
 	bool readSaveGameHeader(Common::SeekableReadStream *in, SaveGameHeader &header);
diff --git a/engines/zvision/file/search_manager.cpp b/engines/zvision/file/search_manager.cpp
index 9f709dd0a1..821b85b053 100644
--- a/engines/zvision/file/search_manager.cpp
+++ b/engines/zvision/file/search_manager.cpp
@@ -184,6 +184,16 @@ bool SearchManager::loadZix(const Common::String &name) {
 			if (path.size() && path.hasSuffix("/"))
 				path.deleteLastChar();
 
+			// Handle paths in case-sensitive file systems (bug #6775)
+			if (path.size()) {
+				for (Common::List<Common::String>::iterator it = _dirList.begin(); it != _dirList.end(); ++it) {
+					if (path.equalsIgnoreCase(*it)) {
+						path = *it;
+						break;
+					}
+				}
+			}
+
 			if (path.matchString("*.zfs", true)) {
 				arc = new ZfsArchive(path);
 			} else {