From f1d674c745ba117e1e62ff6fa3ebb8a7cace3615 Mon Sep 17 00:00:00 2001
From: Paul Gilbert
Date: Sat, 19 Mar 2016 09:50:47 -0400
Subject: TITANIC: Implemented CViewItem::viewChange

---
 engines/titanic/core/saveable_object.cpp |  6 ++++++
 engines/titanic/core/view_item.cpp       | 28 ++++++++++++++++++++++++++++
 engines/titanic/core/view_item.h         |  5 +++++
 engines/titanic/messages/messages.h      |  6 +++---
 4 files changed, 42 insertions(+), 3 deletions(-)

diff --git a/engines/titanic/core/saveable_object.cpp b/engines/titanic/core/saveable_object.cpp
index 4ad9938c9c..5fbe88878f 100644
--- a/engines/titanic/core/saveable_object.cpp
+++ b/engines/titanic/core/saveable_object.cpp
@@ -801,6 +801,9 @@ DEFFN(CIsEarBowlPuzzleDone)
 DEFFN(CIsHookedOnMsg)
 DEFFN(CIsParrotPresentMsg)
 DEFFN(CKeyCharMsg)
+DEFFN(CLeaveNodeMsg);
+DEFFN(CLeaveRoomMsg);
+DEFFN(CLeaveViewMsg);
 DEFFN(CLemonFallsFromTreeMsg)
 DEFFN(CLightsMsg)
 DEFFN(CLoadSuccessMsg)
@@ -1374,6 +1377,9 @@ void CSaveableObject::initClassList() {
 	ADDFN(CIsHookedOnMsg, CMessage);
 	ADDFN(CIsParrotPresentMsg, CMessage);
 	ADDFN(CKeyCharMsg, CMessage);
+	ADDFN(CLeaveNodeMsg, CMessage);
+	ADDFN(CLeaveRoomMsg, CMessage);
+	ADDFN(CLeaveViewMsg, CMessage);
 	ADDFN(CLemonFallsFromTreeMsg, CMessage);
 	ADDFN(CLightsMsg, CMessage);
 	ADDFN(CLoadSuccessMsg, CMessage);
diff --git a/engines/titanic/core/view_item.cpp b/engines/titanic/core/view_item.cpp
index 7038e94538..60463545d3 100644
--- a/engines/titanic/core/view_item.cpp
+++ b/engines/titanic/core/view_item.cpp
@@ -21,6 +21,8 @@
  */
 
 #include "titanic/core/view_item.h"
+#include "titanic/messages/messages.h"
+#include "titanic/game_manager.h"
 
 namespace Titanic {
 
@@ -73,4 +75,30 @@ bool CViewItem::getResourceKey(CResourceKey *key) {
 	return !filename.empty();
 }
 
+void CViewItem::viewChange(CViewItem *newView) {
+	// Only do the processing if we've been passed a view, and it's not the same 
+	if (newView && newView != this) {
+		CLeaveViewMsg viewMsg(this, newView);
+		viewMsg.execute(this, nullptr, MSGFLAG_SCAN);
+
+		CNodeItem *oldNode = findNode();
+		CNodeItem *newNode = newView->findNode();
+		if (newNode != oldNode) {
+			CLeaveNodeMsg nodeMsg(oldNode, newNode);
+			nodeMsg.execute(oldNode, nullptr, MSGFLAG_SCAN);
+
+			CRoomItem *oldRoom = oldNode->findRoom();
+			CRoomItem *newRoom = newNode->findRoom();
+			if (newRoom != oldRoom) {
+				CGameManager *gm = getGameManager();
+				if (gm)
+					gm->viewChange();
+
+				CLeaveRoomMsg roomMsg(oldRoom, newRoom);
+				roomMsg.execute(oldRoom, nullptr, MSGFLAG_SCAN);
+			}
+		}
+	}
+}
+
 } // End of namespace Titanic
diff --git a/engines/titanic/core/view_item.h b/engines/titanic/core/view_item.h
index 106c795773..632c8e7358 100644
--- a/engines/titanic/core/view_item.h
+++ b/engines/titanic/core/view_item.h
@@ -57,6 +57,11 @@ public:
 	 * Get the resource key for the view
 	 */
 	bool getResourceKey(CResourceKey *key);
+
+	/**
+	 * Called when changing from one view to another
+	 */
+	void viewChange(CViewItem *newView);
 };
 
 } // End of namespace Titanic
diff --git a/engines/titanic/messages/messages.h b/engines/titanic/messages/messages.h
index d89b0e1ae5..4e00648f1b 100644
--- a/engines/titanic/messages/messages.h
+++ b/engines/titanic/messages/messages.h
@@ -281,9 +281,9 @@ MESSAGE0(CInitializeAnimMsg);
 MESSAGE1(CIsEarBowlPuzzleDone, int, value, 0);
 MESSAGE1(CIsParrotPresentMsg, int, value, 0);
 MESSAGE1(CKeyCharMsg, int, value, 32);
-MESSAGE1(CLeaveNodeMsg, CNodeItem *, node, nullptr);
-MESSAGE1(CLeaveRoomMsg, CRoomItem *, room, nullptr);
-MESSAGE1(CLeaveViewMsg, CViewItem *, view, nullptr);
+MESSAGE2(CLeaveNodeMsg, CNodeItem *, oldNode, nullptr, CNodeItem *, newNode, nullptr);
+MESSAGE2(CLeaveRoomMsg, CRoomItem *, oldRoom, nullptr, CRoomItem *, newRoom, nullptr);
+MESSAGE2(CLeaveViewMsg, CViewItem *, oldView, nullptr, CViewItem *, newView, nullptr);
 MESSAGE2(CLemonFallsFromTreeMsg, int, value1, 0, int, value2, 0);
 MESSAGE1(CLoadSuccessMsg, int, ticks, 0);
 MESSAGE1(CLockPhonographMsg, int, value, 0);
-- 
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