MOHAWK: Allow for Riven to update specific portions of the screen

svn-id: r55206

2 files changed, 3 insertions, 3 deletions

diff --git a/engines/mohawk/graphics.cpp b/engines/mohawk/graphics.cpp
index c13738689f..19fb561e37 100644
--- a/engines/mohawk/graphics.cpp
+++ b/engines/mohawk/graphics.cpp
@@ -672,7 +672,7 @@ void RivenGraphics::drawPLST(uint16 x) {
 	delete plst;
 }
 
-void RivenGraphics::updateScreen() {
+void RivenGraphics::updateScreen(Common::Rect updateRect) {
 	if (_updatesEnabled) {
 		_vm->runUpdateScreenScript();
 
@@ -681,7 +681,7 @@ void RivenGraphics::updateScreen() {
 
 			// Copy to screen if there's no transition. Otherwise transition. ;)
 			if (_scheduledTransition < 0)
-				_vm->_system->copyRectToScreen((byte *)_mainScreen->pixels, _mainScreen->pitch, 0, 0, _mainScreen->w, _mainScreen->h);
+				_vm->_system->copyRectToScreen((byte *)_mainScreen->getBasePtr(updateRect.left, updateRect.top), _mainScreen->pitch, updateRect.left, updateRect.top, updateRect.width(), updateRect.height());
 			else
 				runScheduledTransition();
 
diff --git a/engines/mohawk/graphics.h b/engines/mohawk/graphics.h
index 7c11692af3..c664e76dcc 100644
--- a/engines/mohawk/graphics.h
+++ b/engines/mohawk/graphics.h
@@ -171,7 +171,7 @@ public:
 	~RivenGraphics();
 
 	void copyImageToScreen(uint16, uint32, uint32, uint32, uint32);
-	void updateScreen();
+	void updateScreen(Common::Rect updateRect = Common::Rect(0, 0, 608, 392));
 	bool _updatesEnabled;
 	Common::Array<uint16> _activatedPLSTs;
 	void drawPLST(uint16 x);