From 14121a6f574299a4d27f5eebe188592be2453cda Mon Sep 17 00:00:00 2001
From: Vladimir Menshakov
Date: Thu, 16 Jun 2011 01:03:00 +0400
Subject: DREAMWEB: moved stubs into stubs.cpp

---
 engines/dreamweb/stubs.cpp | 535 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 535 insertions(+)
 create mode 100644 engines/dreamweb/stubs.cpp

(limited to 'engines/dreamweb/stubs.cpp')

diff --git a/engines/dreamweb/stubs.cpp b/engines/dreamweb/stubs.cpp
new file mode 100644
index 0000000000..1a6cb7685d
--- /dev/null
+++ b/engines/dreamweb/stubs.cpp
@@ -0,0 +1,535 @@
+#include "dreamweb/dreamweb.h"
+#include "engines/util.h"
+#include "graphics/surface.h"
+
+namespace dreamgen {
+
+Common::String getFilename(Context &context) {
+	uint16 name_ptr = context.dx;
+	Common::String name;
+	uint8 c;
+	while((c = context.cs.byte(name_ptr++)) != 0)
+		name += (char)c;
+	return name;
+}
+
+void multiget(Context &context) {
+	unsigned w = (uint8)context.cl, h = (uint8)context.ch;
+	unsigned x = (uint16)context.di, y = (uint16)context.bx;
+	unsigned src = x + y * kScreenwidth;
+	unsigned dst = (uint16)context.si;
+	context.es = context.ds;
+	context.ds = context.data.word(kWorkspace);
+	if (y + h > 200)
+		h = 200 - y;
+	if (x + w > 320)
+		w = 320 - x;
+	//debug(1, "multiget %u,%u %ux%u -> segment: %04x->%04x", x, y, w, h, (uint16)context.ds, (uint16)context.es);
+	for(unsigned l = 0; l < h; ++l) {
+		uint8 *src_p = context.ds.ptr(src + kScreenwidth * l, w);
+		uint8 *dst_p = context.es.ptr(dst + w * l, w);
+		memcpy(dst_p, src_p, w);
+	}
+	context.si += w * h;
+	context.di = src + kScreenwidth * h;
+	context.cx = 0;
+}
+
+void multiput(Context &context) {
+	unsigned w = (uint8)context.cl, h = (uint8)context.ch;
+	unsigned x = (uint16)context.di, y = (uint16)context.bx;
+	unsigned src = (uint16)context.si;
+	unsigned dst = x + y * kScreenwidth;
+	context.es = context.data.word(kWorkspace);
+	if (y + h > 200)
+		h = 200 - y;
+	if (x + w > 320)
+		w = 320 - x;
+	//debug(1, "multiput %ux%u -> segment: %04x->%04x", w, h, (uint16)context.ds, (uint16)context.es);
+	for(unsigned l = 0; l < h; ++l) {
+		uint8 *src_p = context.ds.ptr(src + w * l, w);
+		uint8 *dst_p = context.es.ptr(dst + kScreenwidth * l, w);
+		memcpy(dst_p, src_p, w);
+	}
+	context.si += w * h;
+	context.di = dst + kScreenwidth * h;
+	context.cx = 0;
+}
+
+void multidump(Context &context) {
+	context.ds = context.data.word(kWorkspace);
+	int w = (uint8)context.cl, h = (uint8)context.ch;
+	int x = (int16)context.di, y = (int16)context.bx;
+	unsigned offset = x + y * kScreenwidth;
+	//debug(1, "multidump %ux%u(segment: %04x) -> %d,%d(address: %d)", w, h, (uint16)context.ds, x, y, offset);
+	context.engine->blit(context.ds.ptr(offset, w * h), kScreenwidth, x, y, w, h);
+	context.si = context.di = offset + h * kScreenwidth;
+	context.cx = 0;
+}
+
+void worktoscreen(Context &context) {
+	context.ds = context.data.word(kWorkspace);
+	uint size = 320 * 200;
+	context.engine->blit(context.ds.ptr(0, size), 320, 0, 0, 320, 200);
+	context.di = context.si = size;
+	context.cx = 0;
+}
+
+void printundermon(Context &context) {
+	context.engine->printUnderMonitor();
+}
+
+void cls(Context &context) {
+	context.engine->cls();
+}
+
+void frameoutnm(Context &context) {
+	unsigned w = (uint8)context.cl, h = (uint8)context.ch;
+	unsigned pitch = (uint16)context.dx;
+	unsigned src = (uint16)context.si;
+	int x = (uint16)context.di, y = (uint16)context.bx;
+	unsigned dst = x + y * pitch;
+	//debug(1, "framenm %ux%u[pitch: %u]-> %d,%d, segment: %04x->%04x", w, h, pitch, x, y, (uint16)context.ds, (uint16)context.es);
+	for(unsigned l = 0; l < h; ++l) {
+		uint8 *src_p = context.ds.ptr(src + w * l, w);
+		uint8 *dst_p = context.es.ptr(dst + pitch * l, w);
+		memcpy(dst_p, src_p, w);
+	}
+	context.di += dst + pitch * h;
+	context.si += w * h;
+	context.cx = 0;
+}
+
+void seecommandtail(Context &context) {
+	context.data.word(kSoundbaseadd) = 0x220;
+	context.data.byte(kSoundint) = 5;
+	context.data.byte(kSounddmachannel) = 1;
+	context.data.byte(kBrightness) = 1;
+	context.data.word(kHowmuchalloc) = 0x9360;
+}
+
+void randomnumber(Context &context) {
+	context.al = context.engine->randomNumber();
+}
+
+void quickquit(Context &context) {
+	context.engine->quit();
+}
+
+void quickquit2(Context &context) {
+	context.engine->quit();
+}
+
+void keyboardread(Context &context) {
+	::error("keyboardread"); //this keyboard int handler, must never be called
+}
+
+void resetkeyboard(Context &context) {
+}
+
+void setkeyboardint(Context &context) {
+}
+
+void readfromfile(Context &context) {
+	uint16 dst_offset = context.dx;
+	uint16 size = context.cx;
+	debug(1, "readfromfile(%04x:%u, %u)", (uint16)context.ds, dst_offset, size);
+	context.ax = context.engine->readFromFile(context.ds.ptr(dst_offset, size), size);
+	context.flags._c = false;
+}
+
+void closefile(Context &context) {
+	context.engine->closeFile();
+	context.data.byte(kHandle) = 0;
+}
+
+void openforsave(Context &context) {
+	const char *name = (const char *)context.ds.ptr(context.dx, 13);
+	debug(1, "openforsave(%s)", name);
+	context.engine->openSaveFileForWriting(name);
+}
+
+void openfilenocheck(Context &context) {
+	const char *name = (const char *)context.ds.ptr(context.dx, 13);
+	debug(1, "checksavefile(%s)", name);
+	bool ok = context.engine->openSaveFileForReading(name);
+	context.flags._c = !ok;
+}
+
+void openfilefromc(Context &context) {
+	openfilenocheck(context);
+}
+
+void openfile(Context &context) {
+	Common::String name = getFilename(context);
+	debug(1, "opening file: %s", name.c_str());
+	context.engine->openFile(name);
+	context.cs.word(kHandle) = 1; //only one handle
+	context.flags._c = false;
+}
+
+void createfile(Context &context) {
+	::error("createfile");
+}
+
+void dontloadseg(Context &context) {
+	context.ax = context.es.word(context.di);
+	context._add(context.di, 2);
+	context.dx = context.ax;
+	context.cx = 0;
+	unsigned pos = context.engine->skipBytes(context.dx);
+	context.dx = pos >> 16;
+	context.ax = pos & 0xffff;
+	context.flags._c = false;
+}
+
+void mousecall(Context &context) {
+	context.engine->mouseCall();
+}
+
+void setmouse(Context &context) {
+	context.data.word(kOldpointerx) = 0xffff;
+	//warning("setmouse: fixme: add range setting");
+	//set vertical range to 15-184
+	//set horizontal range to 15-298*2
+}
+
+void gettime(Context &context) {
+	TimeDate t;
+	g_system->getTimeAndDate(t);
+	debug(1, "\tgettime: %02d:%02d:%02d", t.tm_hour, t.tm_min, t.tm_sec);
+	context.ch = t.tm_hour;
+	context.cl = t.tm_min;
+	context.dh = t.tm_sec;
+	context.data.byte(kSecondcount) = context.dh;
+	context.data.byte(kMinutecount) = context.cl;
+	context.data.byte(kHourcount) = context.ch;
+}
+
+void allocatemem(Context &context) {
+	uint size = (context.bx + 2) * 16;
+	debug(1, "allocate mem, %u bytes", size);
+	context.flags._c = false;
+	SegmentRef seg = context.allocateSegment(size);
+	context.ax = (uint16)seg;
+	debug(1, "\tsegment address -> %04x", (uint16)context.ax);
+}
+
+void deallocatemem(Context &context) {
+	uint16 id = (uint16)context.es;
+	debug(1, "deallocating segment %04x", id);
+	context.deallocateSegment(id);
+
+	//fixing invalid entries in the sprite table
+	context.es = context.data;
+	uint tsize = 16 * 32;
+	uint16 bseg = context.data.word(kBuffers);
+	if (!bseg)
+		return;
+	SegmentRef buffers(&context);
+	buffers = bseg;
+	uint8 *ptr = buffers.ptr(kSpritetable, tsize);
+	for(uint i = 0; i < tsize; i += 32) {
+		uint16 seg = READ_LE_UINT16(ptr + i + 6);
+		//debug(1, "sprite segment = %04x", seg);
+		if (seg == id)
+			memset(ptr + i, 0xff, 32);
+	}
+}
+
+void removeemm(Context &context) {
+	::error("removeemm");
+}
+
+void setupemm(Context &context) {
+	//fixme: double check this, but it seems that emm pages used only for sound
+}
+
+void pitinterupt(Context &context) {
+	::error("pitinterupt");
+}
+
+void getridofpit(Context &context) {
+	::error("getridofpit");
+}
+
+void setuppit(Context &context) {
+	::error("setuppit");
+}
+
+void startdmablock(Context &context) {
+	::error("startdmablock");
+}
+
+void dmaend(Context &context) {
+	::error("dmaend");
+}
+
+void restoreems(Context &context) {
+	::error("restoreems");
+}
+
+void saveems(Context &context) {
+	::error("saveems");
+}
+
+void bothchannels(Context &context) {
+	::error("bothchannels");
+}
+
+void channel1only(Context &context) {
+	::error("channel1only");
+}
+
+void channel0only(Context &context) {
+	::error("channel0only");
+}
+
+void out22c(Context &context) {
+	::error("out22c");
+}
+
+void soundstartup(Context &context) {
+}
+
+void soundend(Context &context) {
+}
+
+void interupttest(Context &context) {
+	::error("interupttest");
+}
+
+void disablesoundint(Context &context) {
+	warning("disablesoundint: STUB");
+}
+
+void enablesoundint(Context &context) {
+	warning("enablesoundint: STUB");
+}
+
+void checksoundint(Context &context) {
+	context.data.byte(kTestresult) = 1;
+	warning("checksoundint: STUB");
+}
+
+void setsoundoff(Context &context) {
+	warning("setsoundoff: STUB");
+}
+
+void readheader(Context &context);
+
+void loadsample(Context &context) {
+	context.engine->loadSounds(0, (const char *)context.data.ptr(context.dx, 13));
+}
+
+void cancelch0(Context &context);
+void cancelch1(Context &context);
+
+void loadsecondsample(Context &context) {
+	uint8 ch0 = context.data.byte(kCh0playing);
+	if (ch0 >= 12 && ch0 != 255)
+		cancelch0(context);
+	uint8 ch1 = context.data.byte(kCh1playing);
+	if (ch1 >= 12)
+		cancelch1(context);
+	context.engine->loadSounds(1, (const char *)context.data.ptr(context.dx, 13));
+}
+
+void createname(Context &context);
+
+void loadspeech(Context &context) {
+	cancelch1(context);
+	context.data.byte(kSpeechloaded) = 0;
+	createname(context);
+	const char *name = (const char *)context.data.ptr(context.di, 13);
+	//warning("name = %s", name);
+	if (context.engine->loadSpeech(name))
+		context.data.byte(kSpeechloaded) = 1;
+}
+
+void saveseg(Context &context) {
+	context.cx = context.es.word(context.di);
+	context._add(context.di, 2);
+	savefilewrite(context);
+}
+
+void savefilewrite(Context &context) {
+	context.ax = context.engine->writeToSaveFile(context.ds.ptr(context.dx, context.cx), context.cx);
+}
+
+void savefileread(Context &context) {
+	context.ax = context.engine->readFromSaveFile(context.ds.ptr(context.dx, context.cx), context.cx);
+}
+
+void loadseg(Context &context) {
+	context.ax = context.es.word(context.di);
+	context.di += 2;
+
+	uint16 dst_offset = context.dx;
+	uint16 size = context.ax;
+
+	debug(1, "loadseg(%04x:%u, %u)", (uint16)context.ds, dst_offset, size);
+	context.ax = context.engine->readFromFile(context.ds.ptr(dst_offset, size), size);
+	context.flags._c = false;
+}
+
+void error(Context &context) {
+	::error("error");
+}
+
+void generalerror(Context &context) {
+	::error("generalerror");
+}
+
+void commandonly(Context &context);
+
+void dosreturn(Context &context) {
+	context._cmp(context.data.byte(kCommandtype), 250);
+	if (context.flags.z()) goto alreadydos;
+	context.data.byte(kCommandtype) = 250;
+	context.al = 46;
+	commandonly(context);
+alreadydos:
+	context.ax = context.data.word(kMousebutton);
+	context._and(context.ax, 1);
+	if (context.flags.z()) return;
+
+	quickquit2(context);
+	quickquit(context);
+}
+
+void set16colpalette(Context &context) {
+}
+
+void mode640x480(Context &context) {
+	// Video mode 12h: 640x480 pixels, 16 colors, I believe
+	context.al = 0x12 + 128;
+	context.ah = 0;
+	initGraphics(640, 480, true);
+}
+
+void showgroup(Context &context) {
+	context.engine->setPalette();
+}
+
+void fadedos(Context &context) {
+	context.engine->fadeDos();
+}
+
+void doshake(Context &context) {
+	uint8 &counter = context.data.byte(kShakecounter);
+	context._cmp(counter, 48);
+	if (context.flags.z())
+		return;
+
+	context._add(counter, 1);
+	static const int shakeTable[] = {
+		0, -2,  3, -2,  0,  2,  4, -1,
+		1, -3,  3,  2,  0, -2,  3, -2,
+		0,  2,  4, -1,  1, -3,  3,  2,
+		0, -2,  3, -2,  0,  2,  4, -1,
+
+		1, -3,  3,  2,  0, -2,  3, -2,
+		0,  2,  4, -1,  1, -3,  3,  2,
+		0, -2,  3, -2,  0,  2,  4, -1,
+		1, -3,  3,  2,  0, -2,  3, -2,
+
+		0,  2,  4, -1,  1, -3,  3,  2,
+		0, -2,  3, -2,  0,  2,  4, -1,
+		1, -3,  3,  2,  0, -2,  3, -2,
+		0,  2,  4, -1,  1, -3,  3,  2,
+
+		0, -2,  3, -2,  0,  2,  4, -1,
+		1, -3,  3,  0,
+	};
+	int offset = shakeTable[counter];
+	context.engine->setShakePos(offset >= 0? offset: -offset);
+}
+
+void vsync(Context &context) {
+	context.engine->waitForVSync();
+}
+
+void setmode(Context &context) {
+	vsync(context);
+	initGraphics(320, 200, false);
+}
+
+void readoneblock(Context &context) {
+	context.ds = context.data.word(kWorkspace);
+	context.cx = 30000;
+	context.dx = 0;
+	readfromfile(context);
+}
+
+void showpcx(Context &context) {
+	Common::String name = getFilename(context);
+	Common::File pcxFile;
+
+	if (!pcxFile.open(name)) {
+		warning("showpcx: Could not open '%s'", name.c_str());
+		return;
+	}
+
+	uint8 *maingamepal;
+	int i, j;
+
+	// Read the 16-color palette into the 'maingamepal' buffer. Note that
+	// the color components have to be adjusted from 8 to 6 bits.
+
+	pcxFile.seek(16, SEEK_SET);
+	context.es = context.data.word(kBuffers);
+	maingamepal = context.es.ptr(4782, 768); //fixme: hardcoded offset
+	pcxFile.read(maingamepal, 48);
+
+	memset(maingamepal + 48, 0xff, 720);
+	for (i = 0; i < 48; i++) {
+		maingamepal[i] >>= 2;
+	}
+
+	// Decode the image data.
+
+	Graphics::Surface *s = g_system->lockScreen();
+	Common::Rect rect(640, 480);
+
+	s->fillRect(rect, 0);
+	pcxFile.seek(128, SEEK_SET);
+
+	for (int y = 0; y < 480; y++) {
+		byte *dst = (byte *)s->getBasePtr(0, y);
+		int decoded = 0;
+
+		while (decoded < 320) {
+			byte col = pcxFile.readByte();
+			byte len;
+
+			if ((col & 0xc0) == 0xc0) {
+				len = col & 0x3f;
+				col = pcxFile.readByte();
+			} else {
+				len = 1;
+			}
+
+			// The image uses 16 colors and is stored as four bit
+			// planes, one for each bit of the color, least
+			// significant bit plane first.
+
+			for (i = 0; i < len; i++) {
+				int plane = decoded / 80;
+				int pos = decoded % 80;
+
+				for (j = 0; j < 8; j++) {
+					byte bit = (col >> (7 - j)) & 1;
+					dst[8 * pos + j] |= (bit << plane);
+				}
+
+				decoded++;
+			}
+		}
+	}
+
+	g_system->unlockScreen();
+	pcxFile.close();
+}
+
+} /*namespace dreamgen */
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