HDB: Add Picture::drawMasked for masked blitting

2 files changed, 10 insertions, 2 deletions

diff --git a/engines/hdb/draw-manager.cpp b/engines/hdb/draw-manager.cpp
index 72c8820cdf..e1cddda8be 100644
--- a/engines/hdb/draw-manager.cpp
+++ b/engines/hdb/draw-manager.cpp
@@ -273,6 +273,13 @@ void Picture::draw(int x, int y) {
 	g_system->copyRectToScreen(_surface.getBasePtr(0, 0), _surface.pitch, x, y, _surface.w, _surface.h);
 }
 
+void Picture::drawMasked(int x, int y) {
+	Graphics::ManagedSurface tempSurf;
+	tempSurf.create(_surface.w, _surface.h);
+	tempSurf.transBlitFrom(_surface, 0xf81f);
+	g_system->copyRectToScreen(tempSurf.getBasePtr(0, 0), tempSurf.pitch, x, y, tempSurf.w, tempSurf.h);
+}
+
 Tile::~Tile() {
 	_surface.free();
 }
diff --git a/engines/hdb/draw-manager.h b/engines/hdb/draw-manager.h
index 2789fbb099..f6909918ed 100644
--- a/engines/hdb/draw-manager.h
+++ b/engines/hdb/draw-manager.h
@@ -102,13 +102,14 @@ public:
 
 	Graphics::Surface load(Common::SeekableReadStream *stream);
 	void draw(int x, int y);
+	void drawMasked(int x, int y);
 
 private:
 
 	uint _width, _height;
 	char _name[64];
 
-	Graphics::ManagedSurface _surface;
+	Graphics::Surface _surface;
 
 };
 
@@ -125,7 +126,7 @@ public:
 private:
 	char _name[64];
 
-	Graphics::ManagedSurface _surface;
+	Graphics::Surface _surface;
 };
 
 } // End of Namespace HDB