MADS: Fix left screen clipping for scaled flipped sprites

1 files changed, 7 insertions, 5 deletions

diff --git a/engines/mads/msurface.cpp b/engines/mads/msurface.cpp
index cc12442db1..702b9e5f08 100644
--- a/engines/mads/msurface.cpp
+++ b/engines/mads/msurface.cpp
@@ -400,14 +400,16 @@ void MSurface::copyFrom(MSurface *src, const Common::Point &destPos, int depth,
 		const byte *srcP = srcPixelsP;
 		byte *destP = destPixelsP;
 
-		for (int xp = 0, sprX = 0; xp < frameWidth; ++xp, ++srcP) {
-			if (xp < spriteLeft)
-				// Not yet reached start of display area
-				continue;
-			if (!lineDist[sprX++])
+		for (int xp = 0, sprX = -1; xp < frameWidth; ++xp, ++srcP) {
+			if (!lineDist[xp])
 				// Not a display pixel
 				continue;
 
+			++sprX;
+			if (sprX < spriteLeft || sprX >= spriteRight)
+				// Skip pixel if it's not in horizontal display portion
+				continue;
+
 			// Get depth of current output pixel in depth surface
 			Common::Point pt((destP - (byte *)this->pixels) % this->pitch,
 				(destP - (byte *)this->pixels) / this->pitch);