From d5341b2fc7a43d63c38e72d671053d28de42e156 Mon Sep 17 00:00:00 2001
From: Matthew Hoops
Date: Tue, 3 Apr 2012 10:32:32 -0400
Subject: PEGASUS: Implement saving/restoring the in-game AI data

AI data should now be restored properly after the space chase
---
 engines/pegasus/ai/ai_area.cpp | 16 ++++++++++++++--
 engines/pegasus/pegasus.cpp    |  2 ++
 engines/pegasus/pegasus.h      |  1 +
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/engines/pegasus/ai/ai_area.cpp b/engines/pegasus/ai/ai_area.cpp
index 9eacb038bd..b9b5ce9a51 100755
--- a/engines/pegasus/ai/ai_area.cpp
+++ b/engines/pegasus/ai/ai_area.cpp
@@ -23,6 +23,8 @@
  *
  */
 
+#include "common/memstream.h"
+
 #include "pegasus/cursor.h"
 #include "pegasus/pegasus.h"
 #include "pegasus/ai/ai_area.h"
@@ -72,11 +74,21 @@ AIArea::~AIArea() {
 
 // Save last state of AI rules...
 void AIArea::saveAIState() {
-	// TODO
+	PegasusEngine *vm = (PegasusEngine *)g_engine;
+
+	delete vm->_aiSaveStream;
+
+	Common::MemoryWriteStreamDynamic out;
+	writeAIRules(&out);
+
+	vm->_aiSaveStream = new Common::MemoryReadStream(out.getData(), out.size(), DisposeAfterUse::YES);
 }
 	
 void AIArea::restoreAIState() {
-	// TODO
+	PegasusEngine *vm = (PegasusEngine *)g_engine;
+
+	if (vm->_aiSaveStream)
+		readAIRules(vm->_aiSaveStream);
 }
 
 void AIArea::writeAIRules(Common::WriteStream *stream) {
diff --git a/engines/pegasus/pegasus.cpp b/engines/pegasus/pegasus.cpp
index a346af581a..46aea7328b 100644
--- a/engines/pegasus/pegasus.cpp
+++ b/engines/pegasus/pegasus.cpp
@@ -90,6 +90,7 @@ PegasusEngine::PegasusEngine(OSystem *syst, const PegasusGameDescription *gamede
 	_idlerHead = 0;
 	_currentCD = 1;
 	_introTimer = 0;
+	_aiSaveStream = 0;
 }
 
 PegasusEngine::~PegasusEngine() {
@@ -101,6 +102,7 @@ PegasusEngine::~PegasusEngine() {
 	delete _neighborhood;
 	delete _rnd;
 	delete _introTimer;
+	delete _aiSaveStream;
 
 	// NOTE: This must be deleted last!
 	delete _gfx;
diff --git a/engines/pegasus/pegasus.h b/engines/pegasus/pegasus.h
index c6d4c80b76..349856d27b 100644
--- a/engines/pegasus/pegasus.h
+++ b/engines/pegasus/pegasus.h
@@ -162,6 +162,7 @@ public:
 	bool canSolve();
 	void prepareForAIHint(const Common::String &);
 	void cleanUpAfterAIHint(const Common::String &);
+	Common::SeekableReadStream *_aiSaveStream;
 
 	// Neighborhood
 	void jumpToNewEnvironment(const NeighborhoodID, const RoomID, const DirectionConstant);
-- 
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