TITANIC: Added various preLoad methods

11 files changed, 82 insertions, 13 deletions

diff --git a/engines/titanic/core/project_item.cpp b/engines/titanic/core/project_item.cpp
index bf31388963..90e6d06ed1 100644
--- a/engines/titanic/core/project_item.cpp
+++ b/engines/titanic/core/project_item.cpp
@@ -142,8 +142,9 @@ void CProjectItem::resetGameManager() {
 void CProjectItem::loadGame(int slotId) {
 	CompressedFile file;
 
-	// Clear any existing project contents
+	// Clear any existing project contents and call preload code
 	clear();
+	preLoad();
 
 	// Open either an existing savegame slot or the new game template
 	if (slotId >= 0) {
@@ -272,6 +273,11 @@ void CProjectItem::saveData(SimpleFile *file, CTreeItem *item) const {
 	}
 }
 
+void CProjectItem::preLoad() {
+	if (_gameManager)
+		_gameManager->preLoad();
+}
+
 void CProjectItem::postLoad() {
 	CGameManager *gameManager = getGameManager();
 	if (gameManager)
diff --git a/engines/titanic/core/project_item.h b/engines/titanic/core/project_item.h
index bb96f81245..87dfc3f0dd 100644
--- a/engines/titanic/core/project_item.h
+++ b/engines/titanic/core/project_item.h
@@ -54,7 +54,6 @@ public:
 	 * Load the data for the class from file
 	 */
 	virtual void load(SimpleFile *file);	
-	
 };
 
 /**
@@ -78,6 +77,16 @@ private:
 	 * Called during save, iterates through the children to do some stuff
 	 */
 	void buildFilesList();
+	
+	/**
+	 * Called at the beginning of loading a game
+	 */
+	void preLoad();
+
+	/**
+	 * Does post-loading processing
+	 */
+	void postLoad();
 
 	/**
 	 * Finds the first child instance of a given class type
@@ -98,11 +107,6 @@ private:
 	 * Save project data to the passed file
 	 */
 	void saveData(SimpleFile *file, CTreeItem *item) const;
-
-	/**
-	 * Does post-loading processing
-	 */
-	void postLoad();
 public:
 	CLASSDEF
 	CProjectItem();
diff --git a/engines/titanic/game_manager.cpp b/engines/titanic/game_manager.cpp
index a2732d8b1c..b181edcaeb 100644
--- a/engines/titanic/game_manager.cpp
+++ b/engines/titanic/game_manager.cpp
@@ -48,7 +48,7 @@ CGameManager::CGameManager(CProjectItem *project, CGameView *gameView):
 		_inputHandler(this), _inputTranslator(&_inputHandler),		
 		_gameState(this), _sound(this), _musicRoom(this),
 		_field30(0), _field34(0), _field4C(0), 
-		_dragItem(nullptr), _field54(0), _tickCount1(0), _tickCount2(0) {
+		_dragItem(nullptr), _field54(0), _lastDiskTicksCount(0), _tickCount2(0) {
 	
 	_videoSurface1 = nullptr;
 	_videoSurface2 = CScreenManager::_screenManagerPtr->createSurface(600, 340);
@@ -65,6 +65,15 @@ void CGameManager::load(SimpleFile *file) {
 	_sound.load(file);
 }
 
+void CGameManager::preLoad() {
+	updateDiskTicksCount();
+	_list.destroyContents();
+	_field34 = 0;
+
+	_trueTalkManager.preLoad();
+	_sound.preLoad();
+}
+
 void CGameManager::postLoad(CProjectItem *project) {
 	if (_gameView) {
 		_gameView->postLoad();
@@ -77,11 +86,11 @@ void CGameManager::postLoad(CProjectItem *project) {
 	}
 	
 	// Signal to anything interested that the game has been loaded
-	CLoadSuccessMsg msg(_tickCount1 - _tickCount2);
+	CLoadSuccessMsg msg(_lastDiskTicksCount - _tickCount2);
 	msg.execute(project, nullptr, MSGFLAG_SCAN);
 
 	// Signal to any registered list items
-	_list.postLoad(_tickCount1, _project);
+	_list.postLoad(_lastDiskTicksCount, _project);
 
 	// Signal the true talk manager and sound
 	_trueTalkManager.postLoad();
@@ -100,4 +109,8 @@ void CGameManager::update() {
 	warning("TODO: CGameManager::update");
 }
 
+void CGameManager::updateDiskTicksCount() {
+	_lastDiskTicksCount = g_vm->_events->getTicksCount();
+}
+
 } // End of namespace Titanic
diff --git a/engines/titanic/game_manager.h b/engines/titanic/game_manager.h
index a331f3a0b4..4380e4f8ec 100644
--- a/engines/titanic/game_manager.h
+++ b/engines/titanic/game_manager.h
@@ -54,7 +54,6 @@ class CGameManager {
 private:
 	CGameView *_gameView;
 	CSound _sound;
-	CMusicRoom _musicRoom;
 	CTrueTalkManager _trueTalkManager;
 	CGameManagerList _list;
 	int _field30;
@@ -63,7 +62,7 @@ private:
 	int _field4C;
 	int _field54;
 	CVideoSurface *_videoSurface2;
-	uint _tickCount1;
+	uint _lastDiskTicksCount;
 	uint _tickCount2;
 public:
 	CProjectItem *_project;
@@ -72,6 +71,7 @@ public:
 	CInputHandler _inputHandler;
 	CInputTranslator _inputTranslator;
 	CTreeItem *_dragItem;
+	CMusicRoom _musicRoom;
 public:
 	CGameManager(CProjectItem *project, CGameView *gameView);
 	~CGameManager();
@@ -82,10 +82,20 @@ public:
 	void load(SimpleFile *file);
 
 	/**
+	 * Called when a game is about to be loaded
+	 */
+	void preLoad();
+
+	/**
 	 * Called after loading a game has finished
 	 */
 	void postLoad(CProjectItem *project);
 
+	/**
+	 * Updates the game time when the last disk access started
+	 */
+	void updateDiskTicksCount();
+
 	CViewItem *getView() { return _gameState._gameLocation.getView(); }
 
 	/**
diff --git a/engines/titanic/sound/music_room.cpp b/engines/titanic/sound/music_room.cpp
index 2b959a0847..593c572277 100644
--- a/engines/titanic/sound/music_room.cpp
+++ b/engines/titanic/sound/music_room.cpp
@@ -21,6 +21,7 @@
  */
 
 #include "titanic/sound/music_room.h"
+#include "common/textconsole.h"
 
 namespace Titanic {
 
@@ -28,4 +29,8 @@ CMusicRoom::CMusicRoom(CGameManager *gameManager) :
 		_gameManager(gameManager) {
 }
 
+void CMusicRoom::preLoad() {
+	warning("TODO: CMusicRoom::preLoad");
+}
+
 } // End of namespace Titanic
diff --git a/engines/titanic/sound/music_room.h b/engines/titanic/sound/music_room.h
index 7fcd99db1e..ce262a2b99 100644
--- a/engines/titanic/sound/music_room.h
+++ b/engines/titanic/sound/music_room.h
@@ -32,6 +32,11 @@ public:
 	CGameManager *_gameManager;
 public:
 	CMusicRoom(CGameManager *owner);
+
+	/**
+	 * Called when a game is about to be loaded
+	 */
+	void preLoad();
 };
 
 } // End of namespace Titanic
diff --git a/engines/titanic/sound/sound.cpp b/engines/titanic/sound/sound.cpp
index 35c1c708a6..062e43debc 100644
--- a/engines/titanic/sound/sound.cpp
+++ b/engines/titanic/sound/sound.cpp
@@ -21,6 +21,7 @@
  */
 
 #include "titanic/sound/sound.h"
+#include "titanic/game_manager.h"
 
 namespace Titanic {
 
@@ -35,4 +36,11 @@ void CSound::load(SimpleFile *file) {
 	_soundManager.load(file);
 }
 
+void CSound::preLoad() {
+	_soundManager.preLoad();
+
+	if (_gameManager)
+		_gameManager->_musicRoom.preLoad();
+}
+
 } // End of namespace Titanic z
diff --git a/engines/titanic/sound/sound.h b/engines/titanic/sound/sound.h
index a78bc79741..1b98507a93 100644
--- a/engines/titanic/sound/sound.h
+++ b/engines/titanic/sound/sound.h
@@ -48,6 +48,11 @@ public:
 	void load(SimpleFile *file);
 
 	/**
+	 * Called when a game is about to be loaded
+	 */
+	void preLoad();
+
+	/**
 	 * Called when loading a game is complete
 	 */
 	void postLoad() { _soundManager.postLoad(); }
diff --git a/engines/titanic/sound/sound_manager.h b/engines/titanic/sound/sound_manager.h
index cb88b6684c..6a2e5a79d3 100644
--- a/engines/titanic/sound/sound_manager.h
+++ b/engines/titanic/sound/sound_manager.h
@@ -57,7 +57,11 @@ public:
 	virtual void proc20(int v) { _field8 = v; }
 	virtual void proc21(int v) { _fieldC = v; }
 	virtual void proc22(int v) { _field10 = v; }
-	virtual void proc23() { proc10(); }
+
+	/**
+	 * Called when a game is about to be loaded
+	 */
+	virtual void preLoad() { proc10(); }
 
 	/**
 	 * Load the data for the class from file
diff --git a/engines/titanic/true_talk/true_talk_manager.cpp b/engines/titanic/true_talk/true_talk_manager.cpp
index f176b2f3cf..5afaeb3873 100644
--- a/engines/titanic/true_talk/true_talk_manager.cpp
+++ b/engines/titanic/true_talk/true_talk_manager.cpp
@@ -175,4 +175,8 @@ void CTrueTalkManager::saveNPC(SimpleFile *file, int charId) const {
 	}
 }
 
+void CTrueTalkManager::preLoad() {
+	warning("TODO: CTrueTalkManager::preLoad");
+}
+
 } // End of namespace Titanic
diff --git a/engines/titanic/true_talk/true_talk_manager.h b/engines/titanic/true_talk/true_talk_manager.h
index 904f3c479b..ac36102cf0 100644
--- a/engines/titanic/true_talk/true_talk_manager.h
+++ b/engines/titanic/true_talk/true_talk_manager.h
@@ -78,6 +78,11 @@ public:
 	void load(SimpleFile *file);
 
 	/**
+	 * Called when a game is about to be loaded
+	 */
+	void preLoad();
+
+	/**
 	 * Called when loading a game is complete
 	 */
 	void postLoad() {}