From 6798f9c77ebe9c436c16cd1525554eb49bc1ba1d Mon Sep 17 00:00:00 2001
From: Bastien Bouclet
Date: Thu, 17 May 2018 20:46:42 +0200
Subject: MOHAWK: Don't allow displaying the map when the game is not
 interactive

Fixes Trac#10526 and Trac#10531.
---
 engines/mohawk/dialogs.cpp | 19 +++++++++++--------
 engines/mohawk/myst.cpp    | 30 +++++++++++++++++-------------
 engines/mohawk/myst.h      |  9 ++++++++-
 3 files changed, 36 insertions(+), 22 deletions(-)

diff --git a/engines/mohawk/dialogs.cpp b/engines/mohawk/dialogs.cpp
index f181db8707..5700a4641b 100644
--- a/engines/mohawk/dialogs.cpp
+++ b/engines/mohawk/dialogs.cpp
@@ -204,16 +204,19 @@ MystOptionsDialog::~MystOptionsDialog() {
 void MystOptionsDialog::open() {
 	MohawkOptionsDialog::open();
 
-	_dropPageButton->setEnabled(_vm->_gameState->_globals.heldPage != kNoPage);
+	bool canDropPage = _vm->isInteractive() && _vm->_gameState->_globals.heldPage != kNoPage;
+	_dropPageButton->setEnabled(canDropPage);
 
-	if (_showMapButton)
-		_showMapButton->setEnabled(_vm->_scriptParser &&
-				_vm->_scriptParser->getMap());
+	if (_showMapButton) {
+		bool canShowMap = _vm->isInteractive() && _vm->_scriptParser->getMap();
+		_showMapButton->setEnabled(canShowMap);
+	}
 
-	// Return to menu button is not enabled on the menu
-	if (_returnToMenuButton)
-		_returnToMenuButton->setEnabled(_vm->_scriptParser &&
-				_vm->getCurStack() != kDemoStack);
+	if (_returnToMenuButton) {
+		// Return to menu button is not enabled on the menu
+		bool canReturnToMenu = _vm->isInteractive() && _vm->getCurStack() != kDemoStack;
+		_returnToMenuButton->setEnabled(canReturnToMenu);
+	}
 
 	// Zip mode is disabled in the demo
 	if (_vm->getFeatures() & GF_DEMO)
diff --git a/engines/mohawk/myst.cpp b/engines/mohawk/myst.cpp
index bda69183c3..f324c8cad4 100644
--- a/engines/mohawk/myst.cpp
+++ b/engines/mohawk/myst.cpp
@@ -91,7 +91,7 @@ MohawkEngine_Myst::MohawkEngine_Myst(OSystem *syst, const MohawkGameDescription
 	_mouseClicked = false;
 	_mouseMoved = false;
 	_escapePressed = false;
-	_interactive = true;
+	_waitingOnBlockingOperation = false;
 	_runExitScript = true;
 
 	_needsPageDrop = false;
@@ -310,7 +310,7 @@ void MohawkEngine_Myst::waitUntilMovieEnds(const VideoEntryPtr &video) {
 	if (!video)
 		return;
 
-	_interactive = false;
+	_waitingOnBlockingOperation = true;
 
 	// Sanity check
 	if (video->isLooping())
@@ -328,17 +328,17 @@ void MohawkEngine_Myst::waitUntilMovieEnds(const VideoEntryPtr &video) {
 
 	// Ensure it's removed
 	_video->removeEntry(video);
-	_interactive = true;
+	_waitingOnBlockingOperation = false;
 }
 
 void MohawkEngine_Myst::playSoundBlocking(uint16 id) {
-	_interactive = false;
+	_waitingOnBlockingOperation = true;
 	_sound->playEffect(id);
 
 	while (_sound->isEffectPlaying() && !shouldQuit()) {
 		doFrame();
 	}
-	_interactive = true;
+	_waitingOnBlockingOperation = false;
 }
 
 Common::Error MohawkEngine_Myst::run() {
@@ -389,10 +389,10 @@ Common::Error MohawkEngine_Myst::run() {
 void MohawkEngine_Myst::doFrame() {
 	// Update any background videos
 	_video->updateMovies();
-	if (!_scriptParser->isScriptRunning() && _interactive) {
-		_interactive = false;
+	if (isInteractive()) {
+		_waitingOnBlockingOperation = true;
 		_scriptParser->runPersistentScripts();
-		_interactive = true;
+		_waitingOnBlockingOperation = false;
 	}
 
 	Common::Event event;
@@ -446,7 +446,7 @@ void MohawkEngine_Myst::doFrame() {
 						}
 
 						if (_needsShowCredits) {
-							if (_interactive) {
+							if (isInteractive()) {
 								_cursor->hideCursor();
 								changeToStack(kCreditsStack, 10000, 0, 0);
 								_needsShowCredits = false;
@@ -479,7 +479,7 @@ void MohawkEngine_Myst::doFrame() {
 		}
 	}
 
-	if (!_scriptParser->isScriptRunning() && _interactive) {
+	if (isInteractive()) {
 		updateActiveResource();
 		checkCurrentResource();
 	}
@@ -491,7 +491,7 @@ void MohawkEngine_Myst::doFrame() {
 }
 
 bool MohawkEngine_Myst::wait(uint32 duration, bool skippable) {
-	_interactive = false;
+	_waitingOnBlockingOperation = true;
 	uint32 end = getTotalPlayTime() + duration;
 
 	do {
@@ -503,7 +503,7 @@ bool MohawkEngine_Myst::wait(uint32 duration, bool skippable) {
 		}
 	} while (getTotalPlayTime() < end && !shouldQuit());
 
-	_interactive = true;
+	_waitingOnBlockingOperation = false;
 	return false;
 }
 
@@ -1165,8 +1165,12 @@ bool MohawkEngine_Myst::hasGameSaveSupport() const {
 	return !(getFeatures() & GF_DEMO) && getGameType() != GType_MAKINGOF;
 }
 
+bool MohawkEngine_Myst::isInteractive() {
+	return !_scriptParser->isScriptRunning() && !_waitingOnBlockingOperation;
+}
+
 bool MohawkEngine_Myst::canLoadGameStateCurrently() {
-	if (_scriptParser->isScriptRunning() || !_interactive) {
+	if (!isInteractive()) {
 		return false;
 	}
 
diff --git a/engines/mohawk/myst.h b/engines/mohawk/myst.h
index 2758b7fdca..fcbdafa512 100644
--- a/engines/mohawk/myst.h
+++ b/engines/mohawk/myst.h
@@ -236,6 +236,13 @@ public:
 
 	GUI::Debugger *getDebugger() override { return _console; }
 
+	/**
+	 * Is the game currently interactive
+	 *
+	 * When the game is interactive, the user can interact with the game world
+	 * and perform other operations such as loading saved games, ...
+	 */
+	bool isInteractive();
 	bool canLoadGameStateCurrently() override;
 	bool canSaveGameStateCurrently() override;
 	Common::Error loadGameState(int slot) override;
@@ -284,7 +291,7 @@ private:
 	bool _mouseClicked;
 	bool _mouseMoved;
 	bool _escapePressed;
-	bool _interactive; // Is the game currently interactive
+	bool _waitingOnBlockingOperation;
 
 	Common::Array<MystCursorHint> _cursorHints;
 	void loadCursorHints();
-- 
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