MOHAWK: Fix Myst library books, fireplace combination book, and bookcase transform animation.

svn-id: r54802

10 files changed, 297 insertions, 182 deletions

diff --git a/engines/mohawk/myst.cpp b/engines/mohawk/myst.cpp
index 026cd18fa1..f0c63f90f7 100644
--- a/engines/mohawk/myst.cpp
+++ b/engines/mohawk/myst.cpp
@@ -304,10 +304,6 @@ Common::Error MohawkEngine_Myst::run() {
 		_needsUpdate = _video->updateBackgroundMovies();
 		_scriptParser->runPersistentScripts();
 
-		// Run animations...
-		for (uint16 i = 0; i < _resources.size(); i++)
-			_resources[i]->handleAnimation();
-
 		while (_eventMan->pollEvent(event)) {
 			switch (event.type) {
 			case Common::EVENT_MOUSEMOVE:
@@ -550,6 +546,9 @@ void MohawkEngine_Myst::changeToCard(uint16 card, bool updateScreen) {
 	// Update the images of each area too
 	drawResourceImages();
 
+	for (uint16 i = 0; i < _resources.size(); i++)
+		_resources[i]->handleCardChange();
+
 	// TODO: Handle Script Resources
 
 	// Make sure we have the right cursor showing
diff --git a/engines/mohawk/myst_areas.cpp b/engines/mohawk/myst_areas.cpp
index d5bda54d52..9648a981d7 100644
--- a/engines/mohawk/myst_areas.cpp
+++ b/engines/mohawk/myst_areas.cpp
@@ -161,23 +161,23 @@ MystResourceType6::MystResourceType6(MohawkEngine_Myst *vm, Common::SeekableRead
 	_videoRunning = false;
 }
 
-void MystResourceType6::handleAnimation() {
-	// TODO: Implement Code to allow _playOnCardChange when set
-	//       and trigger by Opcode 9 when clear
-
+void MystResourceType6::playMovie() {
 	if (!_videoRunning) {
-		// NOTE: The left and top coordinates are often incorrect and do not make sense.
-		// We use the rect coordinates here instead.
-
 		if (_playBlocking)
-			_vm->_video->playMovie(_videoFile, _rect.left, _rect.top);
+			_vm->_video->playMovie(_videoFile, _left, _top);
 		else
-			_vm->_video->playBackgroundMovie(_videoFile, _rect.left, _rect.top, _loop);
+			_vm->_video->playBackgroundMovie(_videoFile, _left, _top, _loop);
 
 		_videoRunning = true;
 	}
 }
 
+void MystResourceType6::handleCardChange() {
+	if (_playOnCardChange) {
+		playMovie();
+	}
+}
+
 MystResourceType7::MystResourceType7(MohawkEngine_Myst *vm, Common::SeekableReadStream *rlstStream, MystResource *parent) : MystResource(vm, rlstStream, parent) {
 	_var7 = rlstStream->readUint16LE();
 	_numSubResources = rlstStream->readUint16LE();
@@ -218,20 +218,20 @@ void MystResourceType7::drawDataToScreen() {
 	}
 }
 
-void MystResourceType7::handleAnimation() {
+void MystResourceType7::handleCardChange() {
 	if (_var7 == 0xFFFF) {
 		if (_numSubResources == 1)
-			_subResources[0]->handleAnimation();
+			_subResources[0]->handleCardChange();
 		else if (_numSubResources != 0)
 			warning("Type 7 Resource with _numSubResources of %d, but no control variable", _numSubResources);
 	} else {
 		uint16 varValue = _vm->_scriptParser->getVar(_var7);
 
 		if (_numSubResources == 1 && varValue != 0)
-			_subResources[0]->handleAnimation();
+			_subResources[0]->handleCardChange();
 		else if (_numSubResources != 0) {
 			if (varValue < _numSubResources)
-				_subResources[varValue]->handleAnimation();
+				_subResources[varValue]->handleCardChange();
 			else
 				warning("Type 7 Resource Var %d: %d exceeds number of sub resources %d", _var7, varValue, _numSubResources);
 		}
diff --git a/engines/mohawk/myst_areas.h b/engines/mohawk/myst_areas.h
index c4fbcacc06..55231a4597 100644
--- a/engines/mohawk/myst_areas.h
+++ b/engines/mohawk/myst_areas.h
@@ -66,7 +66,7 @@ public:
 
 	bool contains(Common::Point point) { return _rect.contains(point); }
 	virtual void drawDataToScreen() {}
-	virtual void handleAnimation() {}
+	virtual void handleCardChange() {}
 	virtual Common::Rect getRect() { return _rect; }
 	bool isEnabled();
 	void setEnabled(bool enabled);
@@ -103,7 +103,8 @@ protected:
 class MystResourceType6 : public MystResourceType5 {
 public:
 	MystResourceType6(MohawkEngine_Myst *vm, Common::SeekableReadStream *rlstStream, MystResource *parent);
-	void handleAnimation();
+	void playMovie();
+	void handleCardChange();
 
 protected:
 	static Common::String convertMystVideoName(Common::String name);
@@ -126,13 +127,14 @@ public:
 	virtual ~MystResourceType7();
 
 	virtual void drawDataToScreen();
-	virtual void handleAnimation();
+	virtual void handleCardChange();
 
 	virtual void handleMouseUp(const Common::Point &mouse);
 	virtual void handleMouseDown(const Common::Point &mouse);
 	virtual void handleMouseEnter();
 	virtual void handleMouseLeave();
 
+	MystResource *getSubResource(uint16 index) { return _subResources[index]; }
 protected:
 	uint16 _var7;
 	uint16 _numSubResources;
diff --git a/engines/mohawk/myst_saveload.cpp b/engines/mohawk/myst_saveload.cpp
index 5616321a60..90ae2906ed 100644
--- a/engines/mohawk/myst_saveload.cpp
+++ b/engines/mohawk/myst_saveload.cpp
@@ -76,7 +76,7 @@ bool MystSaveLoad::loadGame(const Common::String &filename) {
 		warning("Unexpected value at 0x%03X - Found %u Expected %u", loadFile->pos(), _v->globals.u1, 1);
 
 	_v->globals.transitions = loadFile->readUint16LE();
-	_v->globals.zipMode = loadFile->readUint16LE();
+	_v->globals.ending = loadFile->readUint16LE();
 	_v->globals.redPagesInBook = loadFile->readUint16LE();
 	_v->globals.bluePagesInBook = loadFile->readUint16LE();
 
@@ -353,7 +353,7 @@ bool MystSaveLoad::saveGame(const Common::String &fname) {
 	saveFile->writeUint16LE(_v->globals.heldPage);
 	saveFile->writeUint16LE(_v->globals.u1);
 	saveFile->writeUint16LE(_v->globals.transitions);
-	saveFile->writeUint16LE(_v->globals.zipMode);
+	saveFile->writeUint16LE(_v->globals.ending);
 	saveFile->writeUint16LE(_v->globals.redPagesInBook);
 	saveFile->writeUint16LE(_v->globals.bluePagesInBook);
 
@@ -478,7 +478,7 @@ void MystSaveLoad::initMystVariables(MystVariables *_tv) {
 	_tv->globals.heldPage = 0;
 	_tv->globals.u1 = 1;
 	_tv->globals.transitions = 0;
-	_tv->globals.zipMode = 0;
+	_tv->globals.ending = 0;
 	_tv->globals.redPagesInBook = 0;
 	_tv->globals.bluePagesInBook = 0;
 
@@ -525,7 +525,7 @@ void MystSaveLoad::initMystVariables(MystVariables *_tv) {
 	//        called by init scripts may set these up as per the others..
 
 	// Library Bookcase Door - Default to Up
-	_tv->myst_vars[18] = 1;
+	_tv->myst.libraryBookcaseDoor = 1;
 	// Dock Imager Numeric Selection - Default to 67
 	_tv->myst_vars[19] = 67;
 	// Dock Imager Active - Default to Active
diff --git a/engines/mohawk/myst_saveload.h b/engines/mohawk/myst_saveload.h
index a0c9ae2fca..b5476e1907 100644
--- a/engines/mohawk/myst_saveload.h
+++ b/engines/mohawk/myst_saveload.h
@@ -46,7 +46,7 @@ struct MystVariables {
 	   2 = Page Being Held
 	   3 = Unknown - Fixed at 1
 	   4 = Slide Transitions
-	   5 = Zip Mode
+	   5 = Ending
 	   6 = Red Pages in Book
 	   7 = Blue Pages in Book
 	*/
@@ -56,7 +56,7 @@ struct MystVariables {
 		uint16 heldPage;
 		uint16 u1;
 		uint16 transitions;
-		uint16 zipMode;
+		uint16 ending;
 		uint16 redPagesInBook;
 		uint16 bluePagesInBook;
 	} globals;
@@ -119,6 +119,7 @@ struct MystVariables {
 		uint16 generatorBreakers;
 		uint16 generatorButtons;
 		uint16 generatorVoltage;
+		uint16 libraryBookcaseDoor;
 		uint16 rocketSliderPosition[5];
 	} myst;
 
diff --git a/engines/mohawk/myst_scripts.cpp b/engines/mohawk/myst_scripts.cpp
index 9f39658861..5195227ded 100644
--- a/engines/mohawk/myst_scripts.cpp
+++ b/engines/mohawk/myst_scripts.cpp
@@ -225,9 +225,13 @@ MystScript MystScriptParser::readScript(Common::SeekableReadStream *stream, Myst
 }
 
 uint16 MystScriptParser::getVar(uint16 var) {
+	MystVariables::Globals &globals = _vm->_saveLoad->_v->globals;
+
 	switch(var) {
 	case 105:
 		return _tempVar;
+	case 106:
+		return globals.ending;
 	default:
 		warning("Unimplemented var getter 0x%02x (%d)", var, var);
 		return _vm->_varStore->getVar(var);
@@ -297,8 +301,6 @@ void MystScriptParser::unknown(uint16 op, uint16 var, uint16 argc, uint16 *argv)
 }
 
 void MystScriptParser::NOP(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
-	// NOTE: Don't check argc/argv here as they vary depending on NOP erased opcode
-	debugC(kDebugScript, "NOP");
 }
 
 void MystScriptParser::o_toggleVar(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
@@ -374,7 +376,7 @@ void MystScriptParser::o_goToDest(uint16 op, uint16 var, uint16 argc, uint16 *ar
 }
 void MystScriptParser::o_triggerMovie(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
 	debugC(kDebugScript, "Opcode %d: Trigger Type 6 Resource Movie..", op);
-	// If movie has sound, pause background music
+	// TODO: If movie has sound, pause background music
 
 	int16 direction = 1;
 	if (argc == 1) {
@@ -383,8 +385,10 @@ void MystScriptParser::o_triggerMovie(uint16 op, uint16 var, uint16 argc, uint16
 	debugC(kDebugScript, "\tDirection: %d", direction);
 
 	// Trigger resource 6 movie overriding play direction
+	MystResourceType6 *resource = static_cast<MystResourceType6 *>(_invokingResource);
+	resource->playMovie();
 
-	// If movie has sound, resume background music
+	// TODO: If movie has sound, resume background music
 }
 
 void MystScriptParser::o_toggleVarNoRedraw(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
diff --git a/engines/mohawk/myst_scripts.h b/engines/mohawk/myst_scripts.h
index 11d8a80a78..654d8d68ea 100644
--- a/engines/mohawk/myst_scripts.h
+++ b/engines/mohawk/myst_scripts.h
@@ -140,7 +140,7 @@ protected:
 
 	uint16 _savedCardId;
 	uint16 _savedCursorId;
-	uint16 _tempVar; // Generic temp var used by the scripts
+	int16 _tempVar; // Generic temp var used by the scripts
 
 	static const uint8 _stackMap[];
 	static const uint16 _startCard[];
diff --git a/engines/mohawk/myst_stacks/intro.cpp b/engines/mohawk/myst_stacks/intro.cpp
index 9b4e41d2d7..a0df5cf2e2 100644
--- a/engines/mohawk/myst_stacks/intro.cpp
+++ b/engines/mohawk/myst_stacks/intro.cpp
@@ -166,7 +166,10 @@ void MystScriptParser_Intro::opcode_201(uint16 op, uint16 var, uint16 argc, uint
 	_vm->_gfx->updateScreen();
 	_vm->_system->delayMillis(4 * 1000);
 	_vm->_gfx->copyImageToScreen(4, Common::Rect(0, 0, 544, 333));
-	// TODO: Wait until video ends, then change to card 5
+
+	MystResourceType6 *resource = static_cast<MystResourceType6 *>(_invokingResource);
+	resource->playMovie();
+	// TODO: Complete
 }
 
 void MystScriptParser_Intro::opcode_300(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
diff --git a/engines/mohawk/myst_stacks/myst.cpp b/engines/mohawk/myst_stacks/myst.cpp
index a1abd5b820..c1ebbbacba 100644
--- a/engines/mohawk/myst_stacks/myst.cpp
+++ b/engines/mohawk/myst_stacks/myst.cpp
@@ -44,6 +44,7 @@ MystScriptParser_Myst::MystScriptParser_Myst(MohawkEngine_Myst *vm) : MystScript
 	// Card ID preinitialized by the engine for use by opcode 18
 	// when linking back to Myst in the library
 	_savedCardId = 4329;
+	_libraryBookcaseChanged = false;
 }
 
 MystScriptParser_Myst::~MystScriptParser_Myst() {
@@ -53,8 +54,9 @@ MystScriptParser_Myst::~MystScriptParser_Myst() {
 
 void MystScriptParser_Myst::setupOpcodes() {
 	// "Stack-Specific" Opcodes
-	OPCODE(101, opcode_101);
-	OPCODE(102, opcode_102);
+	OPCODE(100, NOP);
+	OPCODE(101, o_libraryBookPageTurnLeft);
+	OPCODE(102, o_libraryBookPageTurnRight);
 	OPCODE(103, opcode_103);
 	OPCODE(104, opcode_104);
 	OPCODE(105, opcode_105);
@@ -103,7 +105,7 @@ void MystScriptParser_Myst::setupOpcodes() {
 	OPCODE(175, opcode_175);
 	OPCODE(176, opcode_176);
 	OPCODE(177, opcode_177);
-	OPCODE(180, opcode_180);
+	OPCODE(180, o_libraryCombinationBookStop);
 	OPCODE(181, opcode_181);
 	OPCODE(182, opcode_182);
 	OPCODE(183, opcode_183);
@@ -112,8 +114,8 @@ void MystScriptParser_Myst::setupOpcodes() {
 	OPCODE(186, opcode_186);
 	OPCODE(188, opcode_188);
 	OPCODE(189, opcode_189);
-	OPCODE(190, opcode_190);
-	OPCODE(191, opcode_191);
+	OPCODE(190, o_libraryCombinationBookStartRight);
+	OPCODE(191, o_libraryCombinationBookStartLeft);
 	OPCODE(192, opcode_192);
 	OPCODE(194, opcode_194);
 	OPCODE(195, opcode_195);
@@ -123,7 +125,7 @@ void MystScriptParser_Myst::setupOpcodes() {
 	OPCODE(199, opcode_199);
 
 	// "Init" Opcodes
-	OPCODE(200, opcode_200);
+	OPCODE(200, o_libraryBook_init);
 	OPCODE(201, opcode_201);
 	OPCODE(202, opcode_202);
 	OPCODE(203, opcode_203);
@@ -131,7 +133,7 @@ void MystScriptParser_Myst::setupOpcodes() {
 	OPCODE(205, opcode_205);
 	OPCODE(206, opcode_206);
 	OPCODE(208, opcode_208);
-	OPCODE(209, opcode_209);
+	OPCODE(209, o_libraryBookcaseTransform_init);
 	OPCODE(210, o_generatorControlRoom_init);
 	OPCODE(211, opcode_211);
 	OPCODE(212, opcode_212);
@@ -163,39 +165,53 @@ void MystScriptParser_Myst::setupOpcodes() {
 #undef OPCODE
 
 void MystScriptParser_Myst::disablePersistentScripts() {
-	opcode_200_disable();
 	opcode_201_disable();
 	opcode_202_disable();
 	opcode_203_disable();
 	opcode_205_disable();
-	opcode_209_disable();
 
+	_libraryBookcaseMoving = false;
 	_generatorControlRoomRunning = false;
+	_libraryCombinationBookPagesTurning = false;
 
 	opcode_211_disable();
 	opcode_212_disable();
 }
 
 void MystScriptParser_Myst::runPersistentScripts() {
-	opcode_200_run();
 	opcode_201_run();
 	opcode_202_run();
 	opcode_203_run();
 	opcode_205_run();
-	opcode_209_run();
 
 	if (_generatorControlRoomRunning)
-		o_generatorControlRoom_run();
+		generatorControlRoom_run();
+
+	if (_libraryCombinationBookPagesTurning)
+		libraryCombinationBook_run();
+
+	if (_libraryBookcaseMoving)
+		libraryBookcaseTransform_run();
 
 	opcode_211_run();
 	opcode_212_run();
 }
 
 uint16 MystScriptParser_Myst::getVar(uint16 var) {
-	// MystVariables::Globals &globals = _vm->_saveLoad->_v->globals;
+	MystVariables::Globals &globals = _vm->_saveLoad->_v->globals;
 	MystVariables::Myst &myst = _vm->_saveLoad->_v->myst;
 
 	switch(var) {
+	case 0: // Myst Library Bookcase Closed
+		return myst.libraryBookcaseDoor;
+	case 1:
+		if (globals.ending != 4) {
+			return myst.libraryBookcaseDoor != 1;
+		} else if (myst.libraryBookcaseDoor == 1) {
+			return 2;
+		} else {
+			return 3;
+		}
 	case 44: // Rocket ship power state
 		if (myst.generatorBreakers || myst.generatorVoltage == 0)
 			return 0;
@@ -252,6 +268,18 @@ uint16 MystScriptParser_Myst::getVar(uint16 var) {
 			return 0;
 		else
 			return myst.generatorVoltage / 4;
+	case 102: // Red page
+		if (globals.ending != 4) {
+			return !(globals.redPagesInBook & 1) && (globals.heldPage != 7);
+		} else {
+			return 0;
+		}
+	case 103: // Blue page
+		if (globals.ending != 4) {
+			return !(globals.bluePagesInBook & 1) && (globals.heldPage != 1);
+		} else {
+			return 0;
+		}
 	case 300: // Rocket Ship Music Puzzle Slider State
 		return 1;
 	default:
@@ -259,27 +287,92 @@ uint16 MystScriptParser_Myst::getVar(uint16 var) {
 	}
 }
 
-void MystScriptParser_Myst::opcode_101(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
-	debugC(kDebugScript, "Opcode %d: Decrement Variable", op);
-	if (argc == 0) {
-		debugC(kDebugScript, "\tvar: %d", var);
-		uint16 varValue = _vm->_varStore->getVar(var);
-		// Logic to prevent decrement to negative
-		if (varValue != 0)
-			_vm->_varStore->setVar(var, varValue - 1);
-	} else
-		unknown(op, var, argc, argv);
+void MystScriptParser_Myst::toggleVar(uint16 var) {
+	MystVariables::Globals &globals = _vm->_saveLoad->_v->globals;
+	// MystVariables::Myst &myst = _vm->_saveLoad->_v->myst;
+
+	switch(var) {
+	case 102: // Red page
+		if (globals.ending != 4 && !(globals.redPagesInBook & 1)) {
+			if (globals.heldPage == 7)
+				globals.heldPage = 0;
+			else {
+				globals.heldPage = 7;
+			}
+		}
+		break;
+	case 103: // Blue page
+		if (globals.ending != 4 && !(globals.bluePagesInBook & 1)) {
+			if (globals.heldPage == 1)
+				globals.heldPage = 0;
+			else {
+				globals.heldPage = 1;
+			}
+		}
+		break;
+	default:
+		MystScriptParser::toggleVar(var);
+		break;
+	}
 }
 
-void MystScriptParser_Myst::opcode_102(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
-	if (argc == 0) {
-		debugC(kDebugScript, "Opcode %d: Increment Variable", op);
-		debugC(kDebugScript, "\tvar: %d", var);
+bool MystScriptParser_Myst::setVarValue(uint16 var, uint16 value) {
+	MystVariables::Myst &myst = _vm->_saveLoad->_v->myst;
+	bool refresh = false;
+
+	switch (var) {
+	case 0: // Myst Library Bookcase Closed
+		if (myst.libraryBookcaseDoor != value) {
+			myst.libraryBookcaseDoor = value;
+			_tempVar = 0;
+			refresh = true;
+		}
+		break;
+	case 303: // Library Bookcase status changed
+		_libraryBookcaseChanged = value;
+		break;
+	default:
+		refresh = MystScriptParser::setVarValue(var, value);
+		break;
+	}
 
-		// AFAIK no logic to put ceiling on increment at least in this opcode
-		_vm->_varStore->setVar(var, _vm->_varStore->getVar(var) + 1);
-	} else
-		unknown(op, var, argc, argv);
+	return refresh;
+}
+
+void MystScriptParser_Myst::o_libraryBookPageTurnLeft(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
+	debugC(kDebugScript, "Opcode %d: Turn book page left", op);
+
+	if (_libraryBookPage - 1 >= 0) {
+		_libraryBookPage--;
+
+		Common::Rect rect = Common::Rect(0, 0, 544, 333);
+		_vm->_gfx->copyImageToScreen(_libraryBookBaseImage + _libraryBookPage, rect);
+
+		if (_vm->_rnd->getRandomBit())
+			_vm->_sound->playSound(_libraryBookSound1);
+		else
+			_vm->_sound->playSound(_libraryBookSound2);
+
+		_vm->_gfx->updateScreen();
+	}
+}
+
+void MystScriptParser_Myst::o_libraryBookPageTurnRight(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
+	debugC(kDebugScript, "Opcode %d: Turn book page right", op);
+
+	if (_libraryBookPage + 1 < _libraryBookNumPages) {
+		_libraryBookPage++;
+
+		Common::Rect rect = Common::Rect(0, 0, 544, 333);
+		_vm->_gfx->copyImageToScreen(_libraryBookBaseImage + _libraryBookPage, rect);
+
+		if (_vm->_rnd->getRandomBit())
+			_vm->_sound->playSound(_libraryBookSound1);
+		else
+			_vm->_sound->playSound(_libraryBookSound2);
+
+		_vm->_gfx->updateScreen();
+	}
 }
 
 void MystScriptParser_Myst::opcode_103(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
@@ -1095,9 +1188,9 @@ void MystScriptParser_Myst::opcode_177(uint16 op, uint16 var, uint16 argc, uint1
 	// TODO: Time slider mouse up
 }
 
-void MystScriptParser_Myst::opcode_180(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
-	// Used on Card 4059
-	// TODO: Draw fireplace combination book page
+void MystScriptParser_Myst::o_libraryCombinationBookStop(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
+	debugC(kDebugScript, "Opcode %d: Combiation book stop turning pages", op);
+	_libraryCombinationBookPagesTurning = false;
 }
 
 void MystScriptParser_Myst::opcode_181(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
@@ -1164,14 +1257,87 @@ void MystScriptParser_Myst::opcode_189(uint16 op, uint16 var, uint16 argc, uint1
 	// TODO: Hour wheel turn
 }
 
-void MystScriptParser_Myst::opcode_190(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
-	// Used on Card 4059
-	// TODO: Increase fireplace combination book page
+void MystScriptParser_Myst::o_libraryCombinationBookStartRight(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
+	debugC(kDebugScript, "Opcode %d: Combination book start turning pages right", op);
+
+	_tempVar = 0;
+	libraryCombinationBookTurnRight();
+	_libraryCombinationBookStart = _vm->_system->getMillis();
+	_libraryCombinationBookPagesTurning = true;
 }
 
-void MystScriptParser_Myst::opcode_191(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
-	// Used on Card 4059
-	// TODO: Decrease fireplace combination book page
+void MystScriptParser_Myst::o_libraryCombinationBookStartLeft(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
+	debugC(kDebugScript, "Opcode %d: Combination book start turning pages left", op);
+
+	_tempVar = 0;
+	libraryCombinationBookTurnLeft();
+	_libraryCombinationBookStart = _vm->_system->getMillis();
+	_libraryCombinationBookPagesTurning = true;
+}
+
+void MystScriptParser_Myst::libraryCombinationBookTurnLeft() {
+	// Turn page left
+	if (_libraryBookPage - 1 >=  0) {
+		_tempVar--;
+
+		if (_tempVar >= -5) {
+			_libraryBookPage--;
+		} else {
+			_libraryBookPage -= 5;
+			_tempVar = -5;
+		}
+
+		_libraryBookPage = CLIP<int16>(_libraryBookPage, 0, _libraryBookNumPages - 1);
+
+		Common::Rect rect = Common::Rect(157, 115, 544, 333);
+		_vm->_gfx->copyImageToScreen(_libraryBookBaseImage + _libraryBookPage, rect);
+
+		if (_vm->_rnd->getRandomBit())
+			_vm->_sound->playSound(_libraryBookSound1);
+		else
+			_vm->_sound->playSound(_libraryBookSound2);
+
+		_vm->_gfx->updateScreen();
+	}
+}
+
+void MystScriptParser_Myst::libraryCombinationBookTurnRight() {
+	// Turn page right
+	if (_libraryBookPage + 1 < _libraryBookNumPages) {
+		_tempVar++;
+
+		if (_tempVar <= 5) {
+			_libraryBookPage++;
+		} else {
+			_libraryBookPage += 5;
+			_tempVar = 5;
+		}
+
+		_libraryBookPage = CLIP<uint16>(_libraryBookPage, 0, _libraryBookNumPages - 1);
+
+		Common::Rect rect = Common::Rect(157, 115, 544, 333);
+		_vm->_gfx->copyImageToScreen(_libraryBookBaseImage + _libraryBookPage, rect);
+
+		if (_vm->_rnd->getRandomBit())
+			_vm->_sound->playSound(_libraryBookSound1);
+		else
+			_vm->_sound->playSound(_libraryBookSound2);
+
+		_vm->_gfx->updateScreen();
+	}
+}
+
+void MystScriptParser_Myst::libraryCombinationBook_run() {
+	uint32 time = _vm->_system->getMillis();
+	if (time >= _libraryCombinationBookStart + 500) {
+		if (_tempVar > 0) {
+			libraryCombinationBookTurnRight();
+			_libraryCombinationBookStart = time;
+		} else if (_tempVar < 0) {
+			libraryCombinationBookTurnLeft();
+			_libraryCombinationBookStart = time;
+		}
+	}
 }
 
 void MystScriptParser_Myst::opcode_192(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
@@ -1271,72 +1437,12 @@ void MystScriptParser_Myst::opcode_199(uint16 op, uint16 var, uint16 argc, uint1
 		unknown(op, var, argc, argv);
 }
 
-static struct {
-	bool enabled;
-
-	uint16 var;
-	uint16 imageCount;
-	uint16 imageBaseId;
-	uint16 soundDecrement;
-	uint16 soundIncrement;
-} g_opcode200Parameters;
-
-void MystScriptParser_Myst::opcode_200_run() {
-	static uint16 lastImageIndex = 0;
-
-	if (g_opcode200Parameters.enabled) {
-		uint16 curImageIndex = _vm->_varStore->getVar(g_opcode200Parameters.var);
-
-		if (curImageIndex >= g_opcode200Parameters.imageCount) {
-			curImageIndex = g_opcode200Parameters.imageCount - 1;
-			_vm->_varStore->setVar(g_opcode200Parameters.var, curImageIndex);
-		}
-
-		Common::Rect rect;
-
-		// HACK: Think these images are centered on screen (when smaller than full screen),
-		//       and since no _gfx call for image size, hack this to deal with this case for now...
-		if (_vm->getCurCard() == 4059)
-			rect = Common::Rect(157, 115, 544, 333);
-		else
-			rect = Common::Rect(0, 0, 544, 333);
-
-		if (curImageIndex != lastImageIndex)
-			_vm->_gfx->copyImageToScreen(g_opcode200Parameters.imageBaseId + curImageIndex, rect);
-
-		// TODO: Comparison with original engine shows that this simple solution
-		//       may not be the correct one and the choice of which sound
-		//       may be more complicated or even random..
-		if (curImageIndex < lastImageIndex && g_opcode200Parameters.soundDecrement != 0)
-			_vm->_sound->playSound(g_opcode200Parameters.soundDecrement);
-		else if (curImageIndex > lastImageIndex && g_opcode200Parameters.soundIncrement != 0)
-			_vm->_sound->playSound(g_opcode200Parameters.soundIncrement);
-
-		lastImageIndex = curImageIndex;
-	}
-}
-
-void MystScriptParser_Myst::opcode_200_disable() {
-	g_opcode200Parameters.enabled = false;
-	g_opcode200Parameters.var = 0;
-	g_opcode200Parameters.imageCount = 0;
-	g_opcode200Parameters.imageBaseId = 0;
-	g_opcode200Parameters.soundDecrement = 0;
-	g_opcode200Parameters.soundIncrement = 0;
-}
-
-void MystScriptParser_Myst::opcode_200(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
-	if (argc == 4) {
-		g_opcode200Parameters.var = var;
-		g_opcode200Parameters.imageCount = argv[0];
-		g_opcode200Parameters.imageBaseId = argv[1];
-		g_opcode200Parameters.soundDecrement = argv[2];
-		g_opcode200Parameters.soundIncrement = argv[3];
-		g_opcode200Parameters.enabled = true;
-
-		_vm->_varStore->setVar(var, 0);
-	} else
-		unknown(op, var, argc, argv);
+void MystScriptParser_Myst::o_libraryBook_init(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
+	_libraryBookPage = 0;
+	_libraryBookNumPages = argv[0];
+	_libraryBookBaseImage = argv[1];
+	_libraryBookSound1 = argv[2];
+	_libraryBookSound2 = argv[3];
 }
 
 static struct {
@@ -1482,44 +1588,27 @@ void MystScriptParser_Myst::opcode_208(uint16 op, uint16 var, uint16 argc, uint1
 		unknown(op, var, argc, argv);
 }
 
-static struct {
-	uint16 soundId;
-
-	bool enabled;
-} g_opcode209Parameters;
-
-void MystScriptParser_Myst::opcode_209_run(void) {
-	static bool enabledLast;
+void MystScriptParser_Myst::libraryBookcaseTransform_run(void) {
+	if (_libraryBookcaseChanged) {
+		_libraryBookcaseChanged = false;
+		_libraryBookcaseMoving = false;
 
-	if (g_opcode209Parameters.enabled) {
-		// Used for Card 4334 and 4348 (Myst Library Bookcase Door)
-		if (!enabledLast) {
-			// TODO: If Variable changed...
-			_vm->_sound->playSound(g_opcode209Parameters.soundId);
-		}
-
-		// TODO: Code to trigger Type 6 to play movie...
+		// Play transform sound and video
+		_vm->_sound->playSound(_libraryBookcaseSoundId);
+		_libraryBookcaseMovie->playMovie();
 	}
-
-	enabledLast = g_opcode209Parameters.enabled;
 }
 
-void MystScriptParser_Myst::opcode_209_disable(void) {
-	g_opcode209Parameters.enabled = false;
-}
-
-void MystScriptParser_Myst::opcode_209(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
-	varUnusedCheck(op, var);
-
-	// Used for Card 4334 and 4348 (Myst Library Bookcase Door)
-	if (argc == 1) {
-		g_opcode209Parameters.soundId = argv[0];
-		g_opcode209Parameters.enabled = true;
-	} else
-		unknown(op, var, argc, argv);
+void MystScriptParser_Myst::o_libraryBookcaseTransform_init(uint16 op, uint16 var, uint16 argc, uint16 *argv) {
+	if (_libraryBookcaseChanged) {
+		MystResourceType7 *resource = static_cast<MystResourceType7 *>(_invokingResource);
+		_libraryBookcaseMovie = static_cast<MystResourceType6 *>(resource->getSubResource(getVar(0)));
+		_libraryBookcaseSoundId = argv[0];
+		_libraryBookcaseMoving = true;
+	}
 }
 
-void MystScriptParser_Myst::o_generatorControlRoom_run(void) {
+void MystScriptParser_Myst::generatorControlRoom_run(void) {
 	MystVariables::Myst &myst = _vm->_saveLoad->_v->myst;
 
 	if (_generatorVoltage == myst.generatorVoltage) {
diff --git a/engines/mohawk/myst_stacks/myst.h b/engines/mohawk/myst_stacks/myst.h
index d6cc2f6b49..335c880441 100644
--- a/engines/mohawk/myst_stacks/myst.h
+++ b/engines/mohawk/myst_stacks/myst.h
@@ -48,9 +48,9 @@ public:
 private:
 	void setupOpcodes();
 	uint16 getVar(uint16 var);
+	void toggleVar(uint16 var);
+	bool setVarValue(uint16 var, uint16 value);
 
-	void opcode_200_run();
-	void opcode_200_disable();
 	void opcode_201_run();
 	void opcode_201_disable();
 	void opcode_202_run();
@@ -59,16 +59,17 @@ private:
 	void opcode_203_disable();
 	void opcode_205_run();
 	void opcode_205_disable();
-	void opcode_209_run();
-	void opcode_209_disable();
-	void o_generatorControlRoom_run();
+	void libraryBookcaseTransform_run();
+	void generatorControlRoom_run();
 	void opcode_211_run();
 	void opcode_211_disable();
 	void opcode_212_run();
 	void opcode_212_disable();
+	void libraryCombinationBook_run();
 
-	DECLARE_OPCODE(opcode_101);
-	DECLARE_OPCODE(opcode_102);
+
+	DECLARE_OPCODE(o_libraryBookPageTurnLeft);
+	DECLARE_OPCODE(o_libraryBookPageTurnRight);
 	DECLARE_OPCODE(opcode_103);
 	DECLARE_OPCODE(opcode_104);
 	DECLARE_OPCODE(opcode_105);
@@ -117,7 +118,7 @@ private:
 	DECLARE_OPCODE(opcode_175);
 	DECLARE_OPCODE(opcode_176);
 	DECLARE_OPCODE(opcode_177);
-	DECLARE_OPCODE(opcode_180);
+	DECLARE_OPCODE(o_libraryCombinationBookStop);
 	DECLARE_OPCODE(opcode_181);
 	DECLARE_OPCODE(opcode_182);
 	DECLARE_OPCODE(opcode_183);
@@ -126,8 +127,8 @@ private:
 	DECLARE_OPCODE(opcode_186);
 	DECLARE_OPCODE(opcode_188);
 	DECLARE_OPCODE(opcode_189);
-	DECLARE_OPCODE(opcode_190);
-	DECLARE_OPCODE(opcode_191);
+	DECLARE_OPCODE(o_libraryCombinationBookStartRight);
+	DECLARE_OPCODE(o_libraryCombinationBookStartLeft);
 	DECLARE_OPCODE(opcode_192);
 	DECLARE_OPCODE(opcode_194);
 	DECLARE_OPCODE(opcode_195);
@@ -136,7 +137,7 @@ private:
 	DECLARE_OPCODE(opcode_198);
 	DECLARE_OPCODE(opcode_199);
 
-	DECLARE_OPCODE(opcode_200);
+	DECLARE_OPCODE(o_libraryBook_init);
 	DECLARE_OPCODE(opcode_201);
 	DECLARE_OPCODE(opcode_202);
 	DECLARE_OPCODE(opcode_203);
@@ -144,7 +145,7 @@ private:
 	DECLARE_OPCODE(opcode_205);
 	DECLARE_OPCODE(opcode_206);
 	DECLARE_OPCODE(opcode_208);
-	DECLARE_OPCODE(opcode_209);
+	DECLARE_OPCODE(o_libraryBookcaseTransform_init);
 	DECLARE_OPCODE(o_generatorControlRoom_init);
 	DECLARE_OPCODE(opcode_211);
 	DECLARE_OPCODE(opcode_212);
@@ -182,12 +183,28 @@ private:
 	uint16 _rocketSliderSound; // 294
 	uint16 _rocketLeverPosition; // 296
 
+	bool _libraryCombinationBookPagesTurning;
+	uint32 _libraryCombinationBookStart; // 8
+	int16 _libraryBookPage; // 86
+	uint16 _libraryBookNumPages; // 88
+	uint16 _libraryBookBaseImage; // 90
+
+	bool _libraryBookcaseMoving;
+	MystResourceType6 *_libraryBookcaseMovie; // 104
+	uint16 _libraryBookcaseSoundId; // 284
+	bool _libraryBookcaseChanged; // 288
+	uint16 _libraryBookSound1; // 298
+	uint16 _libraryBookSound2; // 300
+
 	void generatorRedrawRocket();
 	void generatorButtonValue(MystResource *button, uint16 &offset, uint16 &value);
 
 	void rocketSliderMove();
 	uint16 rocketSliderGetSound(uint16 pos);
 	void rocketCheckSolution();
+
+	void libraryCombinationBookTurnRight();
+	void libraryCombinationBookTurnLeft();
 };
 
 } // End of namespace Mohawk