DREAMWEB: Create MapFlags struct, remove backdrops segment

7 files changed, 84 insertions, 72 deletions

diff --git a/engines/dreamweb/backdrop.cpp b/engines/dreamweb/backdrop.cpp
index e85889dae5..553390fe70 100644
--- a/engines/dreamweb/backdrop.cpp
+++ b/engines/dreamweb/backdrop.cpp
@@ -28,7 +28,6 @@ void DreamBase::doBlocks() {
 	uint16 dstOffset = data.word(kMapady) * 320 + data.word(kMapadx);
 	uint16 mapOffset = kMap + data.byte(kMapy) * kMapwidth + data.byte(kMapx);
 	const uint8 *mapData = _mapData + mapOffset;
-	const uint8 *blocks = getSegment(data.word(kBackdrop)).ptr(kBlocks, 0);
 	uint8 *dstBuffer = workspace() + dstOffset;
 
 	for (size_t i = 0; i < 10; ++i) {
@@ -36,7 +35,7 @@ void DreamBase::doBlocks() {
 			uint16 blockType = mapData[j];
 			if (blockType != 0) {
 				uint8 *dst = dstBuffer + i * 320 * 16 + j * 16;
-				const uint8 *block = blocks + blockType * 256;
+				const uint8 *block = _backdropBlocks + blockType * 256;
 				for (size_t k = 0; k < 4; ++k) {
 					memcpy(dst, block, 16);
 					block += 16;
@@ -162,17 +161,17 @@ void DreamBase::showAllObs() {
 	}
 }
 
-bool DreamBase::addAlong(const uint8 *mapFlags) {
+static bool addAlong(const MapFlag *mapFlags) {
 	for (size_t i = 0; i < 11; ++i) {
-		if (mapFlags[3 * i] != 0)
+		if (mapFlags[i]._flag != 0)
 			return true;
 	}
 	return false;
 }
 
-bool DreamBase::addLength(const uint8 *mapFlags) {
+static bool addLength(const MapFlag *mapFlags) {
 	for (size_t i = 0; i < 10; ++i) {
-		if (mapFlags[3 * 11 * i] != 0)
+		if (mapFlags[11 * i]._flag != 0)
 			return true;
 	}
 	return false;
@@ -180,19 +179,19 @@ bool DreamBase::addLength(const uint8 *mapFlags) {
 
 void DreamBase::getDimension(uint8 *mapXstart, uint8 *mapYstart, uint8 *mapXsize, uint8 *mapYsize) {
 	uint8 yStart = 0;
-	while (! addAlong(_mapFlags + 3 * 11 * yStart))
+	while (! addAlong(_mapFlags + 11 * yStart))
 		++yStart;
 
 	uint8 xStart = 0;
-	while (! addLength(_mapFlags + 3 * xStart))
+	while (! addLength(_mapFlags + xStart))
 		++xStart;
 
 	uint8 yEnd = 10;
-	while (! addAlong(_mapFlags + 3 * 11 * (yEnd - 1)))
+	while (! addAlong(_mapFlags + 11 * (yEnd - 1)))
 		--yEnd;
 
 	uint8 xEnd = 11;
-	while (! addLength(_mapFlags + 3 * (xEnd - 1)))
+	while (! addLength(_mapFlags + (xEnd - 1)))
 		--xEnd;
 
 	*mapXstart = xStart;
@@ -241,18 +240,17 @@ void DreamBase::showAllFree() {
 }
 
 void DreamBase::drawFlags() {
-	uint8 *mapFlags = _mapFlags;
+	MapFlag *mapFlag = _mapFlags;
 	uint16 mapOffset = kMap + data.byte(kMapy) * kMapwidth + data.byte(kMapx);
 	const uint8 *mapData = _mapData + mapOffset;
-	const uint8 *backdropFlags = getSegment(data.word(kBackdrop)).ptr(kFlags, 0);
 
 	for (size_t i = 0; i < 10; ++i) {
 		for (size_t j = 0; j < 11; ++j) {
 			uint8 tile = mapData[i * kMapwidth + j];
-			mapFlags[0] = backdropFlags[2 * tile + 0];
-			mapFlags[1] = backdropFlags[2 * tile + 1];
-			mapFlags[2] = tile;
-			mapFlags += 3;
+			mapFlag->_flag = _backdropFlags[tile]._flag;
+			mapFlag->_flagEx = _backdropFlags[tile]._flagEx;
+			mapFlag->_type = tile;
+			mapFlag++;
 		}
 	}
 }
diff --git a/engines/dreamweb/dreambase.h b/engines/dreamweb/dreambase.h
index b310bb3b46..21fd415052 100644
--- a/engines/dreamweb/dreambase.h
+++ b/engines/dreamweb/dreambase.h
@@ -66,6 +66,8 @@ protected:
 	DreamWeb::DreamWebEngine *engine;
 
 	// from backdrop.cpp
+	uint8 *_backdropBlocks;
+	BackdropMapFlag _backdropFlags[96];
 	uint8 _mapData[kLengthOfMap + 32];
 
 	// from keypad.cpp
@@ -103,7 +105,7 @@ protected:
 	ObjectRef _openInvList[16];
 	ObjectRef _ryanInvList[30];
 	uint8 _pointerBack[32*32];
-	uint8 _mapFlags[11*10*3];
+	MapFlag _mapFlags[11*10];
 	uint8 _startPal[3*256];
 	uint8 _endPal[3*256];
 	uint8 _mainPal[3*256];
@@ -137,8 +139,6 @@ public:
 	void calcFrFrame(const Frame *frameBase, uint16 frameNum, uint8* width, uint8* height, uint16 x, uint16 y, ObjPos *objPos);
 	void makeBackOb(SetObject *objData, uint16 x, uint16 y);
 	void showAllObs();
-	bool addAlong(const uint8 *mapFlags);
-	bool addLength(const uint8 *mapFlags);
 	void getDimension(uint8 *mapXstart, uint8 *mapYstart, uint8 *mapXsize, uint8 *mapYsize);
 	void calcMapAd();
 	void showAllFree();
diff --git a/engines/dreamweb/dreamgen.cpp b/engines/dreamweb/dreamgen.cpp
index 910fd8147d..a0a3f0759b 100644
--- a/engines/dreamweb/dreamgen.cpp
+++ b/engines/dreamweb/dreamgen.cpp
@@ -65,15 +65,15 @@ void DreamGenContext::__start() {
 		//0x0100: .... .... .... ....
 		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
 		//0x0110: .... .... .... ....
-		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
 		//0x0120: .... .... .... ....
 		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
 		//0x0130: .... .... .... ....
 		0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 
 		//0x0140: .... .... .... ....
-		0xff, 0xff, 0xff, 0xff, 0x17, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+		0xff, 0xff, 0x17, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
 		//0x0150: .... .... .... ....
-		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, };
+		0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, };
 	ds.assign(src, src + sizeof(src));
 	dreamweb(); 
 }
diff --git a/engines/dreamweb/dreamgen.h b/engines/dreamweb/dreamgen.h
index 3ad9b1d186..b7f3a5e452 100644
--- a/engines/dreamweb/dreamgen.h
+++ b/engines/dreamweb/dreamgen.h
@@ -254,49 +254,48 @@ static const uint16 kWorkspace = 282;
 static const uint16 kCharset1 = 284;
 static const uint16 kMainsprites = 286;
 static const uint16 kBackdrop = 288;
-static const uint16 kMapdata = 290;
-static const uint16 kRecordspace = 292;
-static const uint16 kFreedat = 294;
-static const uint16 kSetdat = 296;
-static const uint16 kReel1 = 298;
-static const uint16 kReel2 = 300;
-static const uint16 kReel3 = 302;
-static const uint16 kRoomdesc = 304;
-static const uint16 kFreedesc = 306;
-static const uint16 kSetdesc = 308;
-static const uint16 kBlockdesc = 310;
-static const uint16 kSetframes = 312;
-static const uint16 kFreeframes = 314;
-static const uint16 kPeople = 316;
-static const uint16 kReels = 318;
-static const uint16 kCommandtext = 320;
-static const uint16 kPuzzletext = 322;
-static const uint16 kTraveltext = 324;
-static const uint16 kTempgraphics = 326;
-static const uint16 kTempgraphics2 = 328;
-static const uint16 kTempgraphics3 = 330;
-static const uint16 kTempsprites = 332;
-static const uint16 kTextfile1 = 334;
-static const uint16 kTextfile2 = 336;
-static const uint16 kTextfile3 = 338;
-static const uint16 kBlinkframe = 340;
-static const uint16 kBlinkcount = 341;
-static const uint16 kReasseschanges = 342;
-static const uint16 kPointerspath = 343;
-static const uint16 kManspath = 344;
-static const uint16 kPointerfirstpath = 345;
-static const uint16 kFinaldest = 346;
-static const uint16 kDestination = 347;
-static const uint16 kLinestartx = 348;
-static const uint16 kLinestarty = 350;
-static const uint16 kLineendx = 352;
-static const uint16 kLineendy = 354;
-static const uint16 kLinepointer = 356;
-static const uint16 kLinedirection = 357;
-static const uint16 kLinelength = 358;
-static const uint16 kCh0playing = 359;
-static const uint16 kCh0repeat = 360;
-static const uint16 kCh1playing = 361;
+static const uint16 kRecordspace = 290;
+static const uint16 kFreedat = 292;
+static const uint16 kSetdat = 294;
+static const uint16 kReel1 = 296;
+static const uint16 kReel2 = 298;
+static const uint16 kReel3 = 300;
+static const uint16 kRoomdesc = 302;
+static const uint16 kFreedesc = 304;
+static const uint16 kSetdesc = 306;
+static const uint16 kBlockdesc = 308;
+static const uint16 kSetframes = 310;
+static const uint16 kFreeframes = 312;
+static const uint16 kPeople = 314;
+static const uint16 kReels = 316;
+static const uint16 kCommandtext = 318;
+static const uint16 kPuzzletext = 320;
+static const uint16 kTraveltext = 322;
+static const uint16 kTempgraphics = 324;
+static const uint16 kTempgraphics2 = 326;
+static const uint16 kTempgraphics3 = 328;
+static const uint16 kTempsprites = 330;
+static const uint16 kTextfile1 = 332;
+static const uint16 kTextfile2 = 334;
+static const uint16 kTextfile3 = 336;
+static const uint16 kBlinkframe = 338;
+static const uint16 kBlinkcount = 339;
+static const uint16 kReasseschanges = 340;
+static const uint16 kPointerspath = 341;
+static const uint16 kManspath = 342;
+static const uint16 kPointerfirstpath = 343;
+static const uint16 kFinaldest = 344;
+static const uint16 kDestination = 345;
+static const uint16 kLinestartx = 346;
+static const uint16 kLinestarty = 348;
+static const uint16 kLineendx = 350;
+static const uint16 kLineendy = 352;
+static const uint16 kLinepointer = 354;
+static const uint16 kLinedirection = 355;
+static const uint16 kLinelength = 356;
+static const uint16 kCh0playing = 357;
+static const uint16 kCh0repeat = 358;
+static const uint16 kCh1playing = 359;
 static const uint16 kBlocktextdat = (0);
 static const uint16 kPersonframes = (0);
 static const uint16 kDebuglevel1 = (0);
diff --git a/engines/dreamweb/sprite.cpp b/engines/dreamweb/sprite.cpp
index 244f6a32ae..cd79d386fc 100644
--- a/engines/dreamweb/sprite.cpp
+++ b/engines/dreamweb/sprite.cpp
@@ -539,10 +539,10 @@ void DreamBase::moveMap(uint8 param) {
 void DreamBase::checkOne(uint8 x, uint8 y, uint8 *flag, uint8 *flagEx, uint8 *type, uint8 *flagX, uint8 *flagY) {
 	*flagX = x / 16;
 	*flagY = y / 16;
-	const uint8 *tileData = &_mapFlags[(*flagY * 11 + *flagX) * 3];
-	*flag = tileData[0];
-	*flagEx = tileData[1];
-	*type = tileData[2];
+	const MapFlag &tileData = _mapFlags[*flagY * 11 + *flagX];
+	*flag = tileData._flag;
+	*flagEx = tileData._flagEx;
+	*type = tileData._type;
 }
 
 uint8 DreamBase::getBlockOfPixel(uint8 x, uint8 y) {
@@ -1101,7 +1101,7 @@ void DreamBase::clearBeforeLoad() {
 
 	//clearRest
 	memset(_mapData, 0, kMaplen);
-	deallocateMem(data.word(kBackdrop));
+	delete[] _backdropBlocks;
 	deallocateMem(data.word(kSetframes));
 	deallocateMem(data.word(kReels));
 	deallocateMem(data.word(kPeople));
diff --git a/engines/dreamweb/structs.h b/engines/dreamweb/structs.h
index af8b3e9f00..4e58988595 100644
--- a/engines/dreamweb/structs.h
+++ b/engines/dreamweb/structs.h
@@ -281,6 +281,17 @@ struct ObjectRef {
 	}
 };
 
+struct BackdropMapFlag {
+	uint8 _flag;
+	uint8 _flagEx;
+};
+
+struct MapFlag {
+	uint8 _flag;
+	uint8 _flagEx;
+	uint8 _type;
+};
+
 } // End of namespace DreamWeb
 
 #endif
diff --git a/engines/dreamweb/stubs.cpp b/engines/dreamweb/stubs.cpp
index e47e79250f..13f27406d8 100644
--- a/engines/dreamweb/stubs.cpp
+++ b/engines/dreamweb/stubs.cpp
@@ -2148,7 +2148,7 @@ void DreamBase::getRidOfTempsP() {
 }
 
 void DreamBase::getRidOfAll() {
-	deallocateMem(data.word(kBackdrop));
+	delete[] _backdropBlocks;
 	deallocateMem(data.word(kSetframes));
 	deallocateMem(data.word(kReel1));
 	deallocateMem(data.word(kReel2));
@@ -2174,7 +2174,11 @@ void DreamBase::loadRoomData(const Room &room, bool skipDat) {
 	for (int i = 0; i < 15; ++i)
 		len[i] = header.len(i);
 
-	data.word(kBackdrop) = allocateAndLoad(len[0]);
+	assert(len[0] >= 192);
+	_backdropBlocks = new uint8[len[0] - 192];
+	engine->readFromFile((uint8 *)_backdropFlags, 192);
+	engine->readFromFile(_backdropBlocks, len[0] - 192);
+
 	clearAndLoad(workspace(), 0, len[1], 132*66); // 132*66 = maplen
 	sortOutMap();
 	data.word(kSetframes) = allocateAndLoad(len[2]);