5 files changed, 58 insertions, 8 deletions

diff --git a/engines/prince/graphics.cpp b/engines/prince/graphics.cpp
index 93b558a03b..4f55b5a23e 100644
--- a/engines/prince/graphics.cpp
+++ b/engines/prince/graphics.cpp
@@ -90,15 +90,28 @@ void GraphicsMan::drawTransparent(int32 posX, int32 posY, const Graphics::Surfac
 }
 
 void GraphicsMan::drawMask(int32 posX, int32 posY, int32 width, int32 height, byte *maskData, const Graphics::Surface *originalRoomSurface) {
+	int maskWidth = width >> 3;
+	int maskPostion = 0;
+	int maskCounter = 128;
 	for (int y = 0; y < height; y++) {
+		int tempMaskPostion = maskPostion;
 		for (int x = 0; x < width; x++) {
 			if (x + posX < _frontScreen->w && x + posX >= 0) {
 				if (y + posY < _frontScreen->h && y + posY >= 0) {
-					byte orgPixel = *((byte*)originalRoomSurface->getBasePtr(x + posX, y + posY));
-					*((byte*)_frontScreen->getBasePtr(x + posX, y + posY)) = orgPixel;
+					if ((maskData[tempMaskPostion] & maskCounter) != 0) {
+						byte orgPixel = *((byte*)originalRoomSurface->getBasePtr(x + posX, y + posY));
+						*((byte*)_frontScreen->getBasePtr(x + posX, y + posY)) = orgPixel;
+					}
+					maskCounter >>= 1;
+					if (maskCounter == 0) {
+						maskCounter = 128;
+						tempMaskPostion++;
+					}
 				}
 			}
 		}
+		maskPostion += maskWidth;
+		maskCounter = 128;
 	}
 	change();
 }
diff --git a/engines/prince/hero.cpp b/engines/prince/hero.cpp
index 51ba4529fe..aeef68d4b2 100644
--- a/engines/prince/hero.cpp
+++ b/engines/prince/hero.cpp
@@ -203,7 +203,7 @@ void Hero::countDrawPosition() {
 	_scaledFrameYSize = getScaledValue(_frameYSize);
 	
 	//TODO
-	int tempHeroHeight = _scaledFrameYSize; // not used? global?
+	//int tempHeroHeight = _scaledFrameYSize; // not used? global?
 	int width = _frameXSize / 2;
 	tempMiddleX = _middleX - width; //eax
 	int z = _middleY; //ebp
diff --git a/engines/prince/prince.cpp b/engines/prince/prince.cpp
index e63986dc3c..5b8903b49c 100644
--- a/engines/prince/prince.cpp
+++ b/engines/prince/prince.cpp
@@ -718,6 +718,35 @@ void PrinceEngine::showTexts() {
 	}
 }
 
+bool PrinceEngine::spriteCheck(int sprWidth, int sprHeight, int destX, int destY) {
+	destX -= _picWindowX;
+	destY -= _picWindowY;
+
+	 // if x1 is on visible part of screen
+	if (destX < 0) {
+		if (destX + sprWidth < 1) {
+			//x2 is negative - out of window
+			return false;
+		}
+	}
+	 // if x1 is outside of screen on right side
+	if (destX >= kNormalWidth) {
+		return false;
+	}
+
+	if (destY < 0) {
+		if (destY + sprHeight < 1) {
+			//y2 is negative - out of window
+			return false;
+		}
+	}
+	if (destY >= kNormalHeight) {
+		return false;
+	}
+
+	return true;
+}
+/*
 bool PrinceEngine::spriteCheck(Graphics::Surface *backAnimSurface, int destX, int destY) {
 	int sprWidth = backAnimSurface->w;
 	int sprHeight = backAnimSurface->h;
@@ -748,6 +777,7 @@ bool PrinceEngine::spriteCheck(Graphics::Surface *backAnimSurface, int destX, in
 
 	return true;
 }
+*/
 
 // CheckNak
 void PrinceEngine::checkMasks(int x1, int y1, int sprWidth, int sprHeight, int z) {
@@ -774,6 +804,7 @@ void PrinceEngine::insertMasks(const Graphics::Surface *originalRoomSurface) {
 	for (uint i = 0; i < _maskList.size(); i++) {
 		if (_maskList[i]._state == 1) {
 			showMask(i, originalRoomSurface);
+			_maskList[i]._state = 0; // here or somewhere else?
 		}
 	}
 }
@@ -781,12 +812,16 @@ void PrinceEngine::insertMasks(const Graphics::Surface *originalRoomSurface) {
 // ShowNak
 void PrinceEngine::showMask(int maskNr, const Graphics::Surface *originalRoomSurface) {
 	if (_maskList[maskNr]._flags == 0) {
-		_graph->drawMask(_maskList[maskNr]._x1, _maskList[maskNr]._y1, _maskList[maskNr]._width, _maskList[maskNr]._height, _maskList[maskNr].getMask(), originalRoomSurface);
+		if (spriteCheck(_maskList[maskNr]._width, _maskList[maskNr]._height, _maskList[maskNr]._x1, _maskList[maskNr]._y1)) {
+			int destX = _maskList[maskNr]._x1 - _picWindowX;
+			int destY = _maskList[maskNr]._y1 - _picWindowY;
+			_graph->drawMask(destX, destY, _maskList[maskNr]._width, _maskList[maskNr]._height, _maskList[maskNr].getMask(), originalRoomSurface);
+		}
 	}
 }
 
 void PrinceEngine::showSprite(Graphics::Surface *backAnimSurface, int destX, int destY) {
-	if (spriteCheck(backAnimSurface, destX, destY)) {
+	if (spriteCheck(backAnimSurface->w, backAnimSurface->h, destX, destY)) {
 		destX -= _picWindowX;
 		destY -= _picWindowY;
 		_graph->drawTransparent(destX, destY, backAnimSurface);
@@ -794,7 +829,7 @@ void PrinceEngine::showSprite(Graphics::Surface *backAnimSurface, int destX, int
 }
 
 void PrinceEngine::showSpriteShadow(Graphics::Surface *shadowSurface, int destX, int destY) {
-	if (spriteCheck(shadowSurface, destX, destY)) {
+	if (spriteCheck(shadowSurface->w, shadowSurface->h, destX, destY)) {
 		destX -= _picWindowX;
 		destY -= _picWindowY;
 		_graph->drawAsShadow(destX, destY, shadowSurface, _graph->_shadowTable70);
diff --git a/engines/prince/prince.h b/engines/prince/prince.h
index 1a6fa14e0d..6747f5cab9 100644
--- a/engines/prince/prince.h
+++ b/engines/prince/prince.h
@@ -30,6 +30,7 @@
 #include "common/textconsole.h"
 #include "common/rect.h"
 #include "common/events.h"
+#include "common/endian.h"
 
 #include "image/bmp.h"
 
@@ -262,7 +263,7 @@ private:
 	void showLogo();
 	void showBackAnims();
 	void clearBackAnimList();
-	bool spriteCheck(Graphics::Surface *backAnimSurface, int destX, int destY);
+	bool spriteCheck(int sprWidth, int sprHeight, int destX, int destY);
 	void showSprite(Graphics::Surface *backAnimSurface, int destX, int destY);
 	void showSpriteShadow(Graphics::Surface *shadowSurface, int destX, int destY);
 	void makeShadowTable(int brightness);
diff --git a/engines/prince/script.cpp b/engines/prince/script.cpp
index 13234971cd..91da9abdc5 100644
--- a/engines/prince/script.cpp
+++ b/engines/prince/script.cpp
@@ -332,9 +332,10 @@ bool Script::loadAllMasks(Common::Array<Mask> &maskList, int offset) {
 			}
 			delete msStream;
 		}
-		tempMask._width = tempMask.getHeight();
+		tempMask._width = tempMask.getWidth();
 		tempMask._height = tempMask.getHeight();
 		debug("width: %d, height: %d\n", tempMask._width, tempMask._height);
+		debug("dataSize: %d", dataSize);
 
 		maskList.push_back(tempMask);
 		offset += 16; // size of Mask (Nak) struct