From 0504f18e9f2a4d03f4b5ce7cfb60cd7a2a383a42 Mon Sep 17 00:00:00 2001
From: Sven Hesse
Date: Wed, 30 May 2007 10:20:21 +0000
Subject: - Added a workaround for bug #1705338 (Seg fault when trying to
 switch screen in music land) which is actually a script bug. - Fixed the
 scrolling bug (#1709574) (the mouse cursor is still shown, that's an instance
 of the global cursor visibility issue)

svn-id: r27010
---
 engines/gob/game.cpp     | 10 +++++++++-
 engines/gob/game.h       |  1 +
 engines/gob/inter_v2.cpp |  3 +++
 engines/gob/mult_v2.cpp  |  3 +++
 4 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/engines/gob/game.cpp b/engines/gob/game.cpp
index 43eac76928..9bc2396104 100644
--- a/engines/gob/game.cpp
+++ b/engines/gob/game.cpp
@@ -78,6 +78,7 @@ Game::Game(GobEngine *vm) : _vm(vm) {
 	_forceHandleMouse = 0;
 	_menuLevel = 0;
 	_noScroll = true;
+	_preventScroll = false;
 	_scrollHandleMouse = false;
 
 	_tempStr[0] = 0;
@@ -291,7 +292,7 @@ void Game::freeSoundSlot(int16 slot) {
 }
 
 void Game::evaluateScroll(int16 x, int16 y) {
-	if (!_scrollHandleMouse || (_menuLevel > 0))
+	if (_preventScroll || !_scrollHandleMouse || (_menuLevel > 0))
 		return;
 
 	if (_noScroll || (_vm->_global->_videoMode != 0x14))
@@ -538,6 +539,13 @@ void Game::switchTotSub(int16 index, int16 skipPlay) {
 	if ((_backupedCount - index) < 1)
 		return;
 
+	int16 newPos = _curBackupPos - index - ((index >= 0) ? 1 : 0);
+	// WORKAROUND: Some versions don't make the MOVEMENT menu item unselectable
+	// in the dreamland screen, resulting in a crash when it's clicked.
+	if ((_vm->_features & GF_GOB2) && (index == -1) && (skipPlay == 7) &&
+	    !scumm_stricmp(_curTotFileArray[newPos], "gob06.tot"))
+		return;
+
 	curBackupPos = _curBackupPos;
 	backupedCount = _backupedCount;
 	if (_curBackupPos == _backupedCount) {
diff --git a/engines/gob/game.h b/engines/gob/game.h
index 66fa0179fd..f017529292 100644
--- a/engines/gob/game.h
+++ b/engines/gob/game.h
@@ -129,6 +129,7 @@ public:
 	int16 _mouseButtons;
 
 	bool _noScroll;
+	bool _preventScroll;
 	bool _scrollHandleMouse;
 
 	Game(GobEngine *vm);
diff --git a/engines/gob/inter_v2.cpp b/engines/gob/inter_v2.cpp
index 78ea9cab7a..331be9fdda 100644
--- a/engines/gob/inter_v2.cpp
+++ b/engines/gob/inter_v2.cpp
@@ -1492,6 +1492,7 @@ void Inter_v2::o2_playImd() {
 		close = false;
 	}
 
+	_vm->_game->_preventScroll = true;
 	for (int i = startFrame; i <= lastFrame; i++) {
 		_vm->_imdPlayer->play(i, palCmd, palStart, palEnd, 0, lastFrame);
 		WRITE_VAR(11, i);
@@ -1507,10 +1508,12 @@ void Inter_v2::o2_playImd() {
 			if (VAR(0) == (unsigned) breakKey) {
 				if (_vm->_imdPlayer->_soundStage == 2)
 					_vm->_snd->stopSound(0);
+				_vm->_game->_preventScroll = false;
 				return;
 			}
 		}
 	}
+	_vm->_game->_preventScroll = false;
 
 	if (close)
 		_vm->_imdPlayer->closeImd();
diff --git a/engines/gob/mult_v2.cpp b/engines/gob/mult_v2.cpp
index 8b158ab314..0e914920bc 100644
--- a/engines/gob/mult_v2.cpp
+++ b/engines/gob/mult_v2.cpp
@@ -1016,6 +1016,8 @@ void Mult_v2::playImd(const char *imdFile, Mult::Mult_ImdKey &key, int16 dir,
 	int16 baseFrame, palFrame, lastFrame;
 	uint16 flags;
 
+	_vm->_game->_preventScroll = true;
+
 	if (_vm->_draw->_renderFlags & 0x100) {
 		x = VAR(55);
 		y = VAR(56);
@@ -1024,6 +1026,7 @@ void Mult_v2::playImd(const char *imdFile, Mult::Mult_ImdKey &key, int16 dir,
 
 	if (key.imdFile == -1) {
 		_vm->_imdPlayer->closeImd();
+		_vm->_game->_preventScroll = false;
 		return;
 	}
 
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