DM: Add default parameters to DipslayMan::f132_blitToBitmap

2 files changed, 7 insertions, 2 deletions

diff --git a/engines/dm/gfx.cpp b/engines/dm/gfx.cpp
index 79669a11a4..a9c555e857 100644
--- a/engines/dm/gfx.cpp
+++ b/engines/dm/gfx.cpp
@@ -1018,7 +1018,9 @@ void DisplayMan::f466_loadIntoBitmap(uint16 index, byte *destBitmap) {
 }
 
 void DisplayMan::f132_blitToBitmap(byte *srcBitmap, byte *destBitmap, Box &box, uint16 srcX, uint16 srcY, uint16 srcWidth,
-					   uint16 destWidth, Color transparent) {
+					   uint16 destWidth, Color transparent, int16 srcHeight, int16 destHight) {
+	// Note: if you want to use srcHeight and destHight parameters, remove the defaults values and 
+	// and complete the function calls at the callsites, otherwise their value can be the default -1
 	for (uint16 y = 0; y < box._y2 - box._y1; ++y)
 		for (uint16 x = 0; x < box._x2 - box._x1; ++x) {
 			byte srcPixel = srcBitmap[srcWidth * (y + srcY) + srcX + x];
diff --git a/engines/dm/gfx.h b/engines/dm/gfx.h
index 72f9fa6cff..1515229d7d 100644
--- a/engines/dm/gfx.h
+++ b/engines/dm/gfx.h
@@ -547,8 +547,11 @@ public:
 	void f99_copyBitmapAndFlipHorizontal(byte *srcBitmap, byte *destBitmap, uint16 byteWidth, uint16 height);
 
 
+	/* srcHeight and destHeight are not necessary for blitting, only error checking, thus they are defaulted for existing code which 
+	does not pass anything, newly imported calls do pass srcHeght and srcWidth, so this is a ceonvenience change so the the parameters
+	match the original exatcly, if need arises for heights then we'll have to retrospectively add them in old function calls*/
 	void f132_blitToBitmap(byte *srcBitmap, byte *destBitmap, Box &box, uint16 srcX, uint16 srcY, uint16 srcWidth,
-					  uint16 destWidth, Color transparent = k255_ColorNoTransparency); // @ F0132_VIDEO_Blit
+					  uint16 destWidth, Color transparent = k255_ColorNoTransparency, int16 srcHeight = -1, int16 destHight = -1); // @ F0132_VIDEO_Blit
 
 	void f133_blitBoxFilledWithMaskedBitmap(byte *src, byte *dest, byte *mask, byte *tmp, Box &box, int16 lastUnitIndex,
 									   int16 firstUnitIndex, int16 destPixelWidth, Color transparent,