6 files changed, 25 insertions, 40 deletions

diff --git a/engines/mads/nebular/nebular_scenes.cpp b/engines/mads/nebular/nebular_scenes.cpp
index baee40cc47..3587822f19 100644
--- a/engines/mads/nebular/nebular_scenes.cpp
+++ b/engines/mads/nebular/nebular_scenes.cpp
@@ -68,6 +68,13 @@ void SceneInfoNebular::loadCodes(MSurface &depthSurface) {
 	MadsPack codesPack(&f);
 	Common::SeekableReadStream *stream = codesPack.getItemStream(0);
 
+	loadCodes(depthSurface, stream);
+
+	delete stream;
+	f.close();
+}
+
+void SceneInfoNebular::loadCodes(MSurface &depthSurface, Common::SeekableReadStream *stream) {
 	byte *destP = depthSurface.getData();
 	byte *endP = depthSurface.getBasePtr(0, depthSurface.h);
 
@@ -85,8 +92,6 @@ void SceneInfoNebular::loadCodes(MSurface &depthSurface) {
 
 	if (destP < endP)
 		Common::fill(destP, endP, 0);
-	delete stream;
-	f.close();
 }
 
 } // End of namespace Nebular
diff --git a/engines/mads/nebular/nebular_scenes.h b/engines/mads/nebular/nebular_scenes.h
index da36c71905..5ac708d398 100644
--- a/engines/mads/nebular/nebular_scenes.h
+++ b/engines/mads/nebular/nebular_scenes.h
@@ -115,6 +115,8 @@ class SceneInfoNebular : public SceneInfo {
 protected:
 	virtual void loadCodes(MSurface &depthSurface);
 
+	virtual void loadCodes(MSurface &depthSurface, Common::SeekableReadStream *stream);
+
 	/**
 	* Constructor
 	*/
diff --git a/engines/mads/palette.cpp b/engines/mads/palette.cpp
index 7e0d5bbdb5..b42fa144e7 100644
--- a/engines/mads/palette.cpp
+++ b/engines/mads/palette.cpp
@@ -229,7 +229,7 @@ int PaletteUsage::process(Common::Array<RGB6> &palette, uint flags) {
 		palette[palIndex]._palIndex = var4;
 	}
 
-	_vm->_palette->_rgbList[rgbIndex] = 0xffff;
+	_vm->_palette->_rgbList[rgbIndex] = -1;
 
 	delete[] pal1;
 	delete[] pal2;
@@ -541,7 +541,7 @@ void Palette::resetGamePalette(int lowRange, int highRange) {
 	}
 
 	_rgbList.clear();
-	_rgbList[0] = _rgbList[1] = 0xffff;
+	_rgbList[0] = _rgbList[1] = -1;
 
 	_v1 = 0;
 	_lowRange = lowRange;
diff --git a/engines/mads/palette.h b/engines/mads/palette.h
index 5f21bd9a21..906f62c3f3 100644
--- a/engines/mads/palette.h
+++ b/engines/mads/palette.h
@@ -100,7 +100,7 @@ public:
 
 class RGBList {
 private:
-	uint16 _data[32];
+	int16 _data[32];
 public:
 	RGBList() { clear(); }
 
@@ -113,7 +113,7 @@ public:
 	 */
 	int scan();
 
-	uint16 &operator[](int idx) { return _data[idx]; }
+	int16 &operator[](int idx) { return _data[idx]; }
 };
 
 #define PALETTE_COUNT 256
diff --git a/engines/mads/scene_data.cpp b/engines/mads/scene_data.cpp
index d2071e3ba5..0cb273a0f4 100644
--- a/engines/mads/scene_data.cpp
+++ b/engines/mads/scene_data.cpp
@@ -383,7 +383,7 @@ SceneInfo *SceneInfo::init(MADSEngine *vm) {
 	if (vm->getGameID() == GType_RexNebular) {
 		return new Nebular::SceneInfoNebular(vm);
 	} else {
-		return new SceneInfo(vm);
+		error("Unknown game");
 	}
 }
 
@@ -453,9 +453,7 @@ void SceneInfo::load(int sceneId, int v1, const Common::String &resName,
 		if (i < spriteInfoCount)
 			spriteInfo.push_back(info);
 	}
-
 	delete infoStream;
-	infoFile.close();
 
 	int width = _width;
 	int height = _height;
@@ -471,7 +469,11 @@ void SceneInfo::load(int sceneId, int v1, const Common::String &resName,
 	}
 
 	// Load the depth surface with the scene codes
-	loadCodes(depthSurface);
+	Common::SeekableReadStream *depthStream = infoPack.getItemStream(1);
+	loadCodes(depthSurface, depthStream);
+	delete depthStream;
+
+	infoFile.close();
 
 	// Get the ART resource
 	if (sceneFlag) {
@@ -554,35 +556,6 @@ void SceneInfo::load(int sceneId, int v1, const Common::String &resName,
 	}
 }
 
-void SceneInfo::loadCodes(MSurface &depthSurface) {
-	File f(Resources::formatName(RESPREFIX_RM, _sceneId, ".DAT"));
-	MadsPack codesPack(&f);
-	Common::SeekableReadStream *stream = codesPack.getItemStream(0);
-
-	uint16 width = _width;
-	uint16 height = _height;
-	byte *walkMap = new byte[stream->size()];
-
-	depthSurface.setSize(width, height);
-	stream->read(walkMap, f.size());
-	delete stream;
-	f.close();
-
-	byte *ptr = (byte *)depthSurface.getPixels();
-
-	for (int y = 0; y < height; y++) {
-		for (int x = 0; x < width; x++) {
-			int ofs = x + (y * width);
-			if ((walkMap[ofs / 8] << (ofs % 8)) & 0x80)
-				*ptr++ = 1;		// walkable
-			else
-				*ptr++ = 0;
-		}
-	}
-
-	delete[] walkMap;
-}
-
 /*------------------------------------------------------------------------*/
 
 SceneLogic::SceneLogic(MADSEngine *vm) : _vm(vm) {
diff --git a/engines/mads/scene_data.h b/engines/mads/scene_data.h
index b8b2056c12..d5c7281fae 100644
--- a/engines/mads/scene_data.h
+++ b/engines/mads/scene_data.h
@@ -253,7 +253,12 @@ protected:
 	/**
 	 * Loads the given surface with depth information of a given scene
 	 */
-	virtual void loadCodes(MSurface &depthSurface);
+	virtual void loadCodes(MSurface &depthSurface) = 0;
+
+	/**
+	* Loads the given surface with depth information of a given scene
+	*/
+	virtual void loadCodes(MSurface &depthSurface, Common::SeekableReadStream *stream) = 0;
 public:
 	int _sceneId;
 	int _artFileNum;