SHERLOCK: Make Screen::_backBuffer protected.

1 files changed, 17 insertions, 1 deletions

diff --git a/engines/sherlock/screen.h b/engines/sherlock/screen.h
index ceeb1297a3..50aec0a5e1 100644
--- a/engines/sherlock/screen.h
+++ b/engines/sherlock/screen.h
@@ -49,9 +49,10 @@ private:
 	int _oldFadePercent;
 protected:
 	SherlockEngine *_vm;
+	Surface *_backBuffer;
+
 public:
 	Surface _backBuffer1, _backBuffer2;
-	Surface *_backBuffer;
 	bool _fadeStyle;
 	byte _cMap[PALETTE_SIZE];
 	byte _sMap[PALETTE_SIZE];
@@ -64,6 +65,21 @@ public:
 	virtual ~Screen();
 
 	/**
+	 * Obtain the currently active back buffer.
+	 */
+	Surface *getBackBuffer() const { return _backBuffer; }
+
+	/**
+	 * Makes first back buffer active.
+	 */
+	void activateBackBuffer1() { _backBuffer = &_backBuffer1; }
+
+	/**
+	 * Makes second back buffer active.
+	 */
+	void activateBackBuffer2() { _backBuffer = &_backBuffer2; }
+
+	/**
 	 * Fades from the currently active palette to the passed palette
 	 */
 	int equalizePalette(const byte palette[PALETTE_SIZE]);