1 files changed, 396 insertions, 0 deletions
diff --git a/engines/adl/hires1.cpp b/engines/adl/hires1.cpp
new file mode 100644
index 0000000000..6e1e31df9f
--- /dev/null
+++ b/engines/adl/hires1.cpp
@@ -0,0 +1,396 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "common/system.h"
+#include "common/debug.h"
+#include "common/error.h"
+#include "common/file.h"
+#include "common/stream.h"
+
+#include "adl/hires1.h"
+#include "adl/display.h"
+
+namespace Adl {
+
+void HiRes1Engine::runIntro() const {
+	Common::File file;
+
+	if (!file.open(IDS_HR1_EXE_0))
+		error("Failed to open file '" IDS_HR1_EXE_0 "'");
+
+	file.seek(IDI_HR1_OFS_LOGO_0);
+	_display->setMode(DISPLAY_MODE_HIRES);
+	_display->loadFrameBuffer(file);
+	_display->updateHiResScreen();
+	delay(4000);
+
+	if (shouldQuit())
+		return;
+
+	_display->setMode(DISPLAY_MODE_TEXT);
+
+	Common::File basic;
+	if (!basic.open(IDS_HR1_LOADER))
+		error("Failed to open file '" IDS_HR1_LOADER "'");
+
+	Common::String str;
+
+	str = readStringAt(basic, IDI_HR1_OFS_PD_TEXT_0, '"');
+	_display->printAsciiString(str + '\r');
+
+	str = readStringAt(basic, IDI_HR1_OFS_PD_TEXT_1, '"');
+	_display->printAsciiString(str + "\r\r");
+
+	str = readStringAt(basic, IDI_HR1_OFS_PD_TEXT_2, '"');
+	_display->printAsciiString(str + "\r\r");
+
+	str = readStringAt(basic, IDI_HR1_OFS_PD_TEXT_3, '"');
+	_display->printAsciiString(str + '\r');
+
+	inputKey();
+	if (g_engine->shouldQuit())
+		return;
+
+	_display->setMode(DISPLAY_MODE_MIXED);
+
+	str = readStringAt(file, IDI_HR1_OFS_GAME_OR_HELP);
+
+	bool instructions = false;
+
+	while (1) {
+		_display->printString(str);
+		Common::String s = inputString();
+
+		if (g_engine->shouldQuit())
+			break;
+
+		if (s.empty())
+			continue;
+
+		if (s[0] == APPLECHAR('I')) {
+			instructions = true;
+			break;
+		} else if (s[0] == APPLECHAR('G')) {
+			break;
+		}
+	};
+
+	if (instructions) {
+		_display->setMode(DISPLAY_MODE_TEXT);
+		file.seek(IDI_HR1_OFS_INTRO_TEXT);
+
+		const uint pages[] = { 6, 6, 4, 5, 8, 7, 0 };
+
+		uint page = 0;
+		while (pages[page] != 0) {
+			_display->home();
+
+			uint count = pages[page++];
+			for (uint i = 0; i < count; ++i) {
+				str = readString(file);
+				_display->printString(str);
+				file.seek(3, SEEK_CUR);
+			}
+
+			inputString();
+
+			if (g_engine->shouldQuit())
+				return;
+
+			file.seek(6, SEEK_CUR);
+		}
+	}
+
+	_display->printAsciiString("\r");
+
+	file.close();
+
+	_display->setMode(DISPLAY_MODE_MIXED);
+
+	if (!file.open(IDS_HR1_EXE_1))
+		error("Failed to open file '" IDS_HR1_EXE_1 "'");
+
+	// Title screen shown during loading
+	file.seek(IDI_HR1_OFS_LOGO_1);
+	_display->loadFrameBuffer(file);
+	_display->updateHiResScreen();
+	delay(2000);
+}
+
+void HiRes1Engine::loadData() {
+	Common::File f;
+
+	if (!f.open(IDS_HR1_MESSAGES))
+		error("Failed to open file '" IDS_HR1_MESSAGES "'");
+
+	for (uint i = 0; i < IDI_HR1_NUM_MESSAGES; ++i)
+		_messages.push_back(readString(f, APPLECHAR('\r')) + APPLECHAR('\r'));
+
+	f.close();
+
+	if (!f.open(IDS_HR1_EXE_1))
+		error("Failed to open file '" IDS_HR1_EXE_1 "'");
+
+	// Some messages have overrides inside the executable
+	_messages[IDI_HR1_MSG_CANT_GO_THERE - 1] = readStringAt(f, IDI_HR1_OFS_STR_CANT_GO_THERE);
+	_messages[IDI_HR1_MSG_DONT_HAVE_IT - 1] = readStringAt(f, IDI_HR1_OFS_STR_DONT_HAVE_IT);
+	_messages[IDI_HR1_MSG_DONT_UNDERSTAND - 1] = readStringAt(f, IDI_HR1_OFS_STR_DONT_UNDERSTAND);
+	_messages[IDI_HR1_MSG_GETTING_DARK - 1] = readStringAt(f, IDI_HR1_OFS_STR_GETTING_DARK);
+
+	// Load other strings from executable
+	_strings.enterCommand = readStringAt(f, IDI_HR1_OFS_STR_ENTER_COMMAND);
+	_strings.dontHaveIt = readStringAt(f, IDI_HR1_OFS_STR_DONT_HAVE_IT);
+	_strings.gettingDark = readStringAt(f, IDI_HR1_OFS_STR_GETTING_DARK);
+	_strings.verbError = readStringAt(f, IDI_HR1_OFS_STR_VERB_ERROR);
+	_strings.nounError = readStringAt(f, IDI_HR1_OFS_STR_NOUN_ERROR);
+	_strings.playAgain = readStringAt(f, IDI_HR1_OFS_STR_PLAY_AGAIN);
+	_gameStrings.pressReturn = readStringAt(f, IDI_HR1_OFS_STR_PRESS_RETURN);
+
+	// Set message IDs
+	_messageIds.cantGoThere = IDI_HR1_MSG_CANT_GO_THERE;
+	_messageIds.dontUnderstand = IDI_HR1_MSG_DONT_UNDERSTAND;
+	_messageIds.itemDoesntMove = IDI_HR1_MSG_ITEM_DOESNT_MOVE;
+	_messageIds.itemNotHere = IDI_HR1_MSG_ITEM_NOT_HERE;
+	_messageIds.thanksForPlaying = IDI_HR1_MSG_THANKS_FOR_PLAYING;
+
+	// Load picture data from executable
+	f.seek(IDI_HR1_OFS_PICS);
+	for (uint i = 0; i < IDI_HR1_NUM_PICS; ++i) {
+		struct Picture pic;
+		pic.block = f.readByte();
+		pic.offset = f.readUint16LE();
+		_pictures.push_back(pic);
+	}
+
+	// Load commands from executable
+	f.seek(IDI_HR1_OFS_CMDS_1);
+	readCommands(f, _roomCommands);
+
+	f.seek(IDI_HR1_OFS_CMDS_0);
+	readCommands(f, _globalCommands);
+
+	// Load dropped item offsets
+	f.seek(IDI_HR1_OFS_ITEM_OFFSETS);
+	for (uint i = 0; i < IDI_HR1_NUM_ITEM_OFFSETS; ++i) {
+		Common::Point p;
+		p.x = f.readByte();
+		p.y = f.readByte();
+		_itemOffsets.push_back(p);
+	}
+
+	// Load right-angle line art
+	f.seek(IDI_HR1_OFS_LINE_ART);
+	uint16 lineArtTotal = f.readUint16LE();
+	for (uint i = 0; i < lineArtTotal; ++i) {
+		f.seek(IDI_HR1_OFS_LINE_ART + 2 + i * 2);
+		uint16 offset = f.readUint16LE();
+		f.seek(IDI_HR1_OFS_LINE_ART + offset);
+
+		Common::Array<byte> lineArt;
+		byte b = f.readByte();
+		while (b != 0) {
+			lineArt.push_back(b);
+			b = f.readByte();
+		}
+		_lineArt.push_back(lineArt);
+	}
+
+	if (f.eos() || f.err())
+		error("Failed to read game data from '" IDS_HR1_EXE_1 "'");
+
+	f.seek(IDI_HR1_OFS_VERBS);
+	loadWords(f, _verbs);
+
+	f.seek(IDI_HR1_OFS_NOUNS);
+	loadWords(f, _nouns);
+}
+
+void HiRes1Engine::initState() {
+	Common::File f;
+
+	_state.room = 1;
+	_state.moves = 0;
+	_state.isDark = false;
+
+	_state.vars.clear();
+	_state.vars.resize(IDI_HR1_NUM_VARS);
+
+	if (!f.open(IDS_HR1_EXE_1))
+		error("Failed to open file '" IDS_HR1_EXE_1 "'");
+
+	// Load room data from executable
+	_state.rooms.clear();
+	f.seek(IDI_HR1_OFS_ROOMS);
+	for (uint i = 0; i < IDI_HR1_NUM_ROOMS; ++i) {
+		Room room;
+		f.readByte();
+		room.description = f.readByte();
+		for (uint j = 0; j < 6; ++j)
+			room.connections[j] = f.readByte();
+		room.picture = f.readByte();
+		room.curPicture = f.readByte();
+		_state.rooms.push_back(room);
+	}
+
+	// Load item data from executable
+	_state.items.clear();
+	f.seek(IDI_HR1_OFS_ITEMS);
+	while (f.readByte() != 0xff) {
+		Item item;
+		item.noun = f.readByte();
+		item.room = f.readByte();
+		item.picture = f.readByte();
+		item.isLineArt = f.readByte();
+		item.position.x = f.readByte();
+		item.position.y = f.readByte();
+		item.state = f.readByte();
+		item.description = f.readByte();
+
+		f.readByte();
+
+		byte size = f.readByte();
+
+		for (uint i = 0; i < size; ++i)
+			item.roomPictures.push_back(f.readByte());
+
+		_state.items.push_back(item);
+	}
+}
+
+void HiRes1Engine::restartGame() {
+	initState();
+	_display->printString(_gameStrings.pressReturn);
+	inputString(); // Missing in the original
+	_display->printAsciiString("\r\r\r\r\r");
+}
+
+void HiRes1Engine::drawPic(byte pic, Common::Point pos) const {
+	Common::File f;
+	Common::String name = Common::String::format("BLOCK%i", _pictures[pic].block);
+
+	if (!f.open(name))
+		error("Failed to open file '%s'", name.c_str());
+
+	f.seek(_pictures[pic].offset);
+	drawPic(f, pos);
+}
+
+void HiRes1Engine::printMessage(uint idx, bool wait) const {
+	// Messages with hardcoded overrides don't delay after printing.
+	// It's unclear if this is a bug or not. In some cases the result
+	// is that these strings will scroll past the four-line text window
+	// before the user gets a chance to read them.
+	// NOTE: later games seem to wait for a key when the text window
+	// overflows and don't use delays. It might be better to use
+	// that system for this game as well.
+	switch (idx) {
+	case IDI_HR1_MSG_CANT_GO_THERE:
+	case IDI_HR1_MSG_DONT_HAVE_IT:
+	case IDI_HR1_MSG_DONT_UNDERSTAND:
+	case IDI_HR1_MSG_GETTING_DARK:
+		wait = false;
+	}
+
+	AdlEngine::printMessage(idx, wait);
+}
+
+void HiRes1Engine::drawLine(const Common::Point &p1, const Common::Point &p2, byte color) const {
+	// This draws a four-connected line
+
+	int16 deltaX = p2.x - p1.x;
+	int8 xStep = 1;
+
+	if (deltaX < 0) {
+		deltaX = -deltaX;
+		xStep = -1;
+	}
+
+	int16 deltaY = p2.y - p1.y;
+	int8 yStep = -1;
+
+	if (deltaY > 0) {
+		deltaY = -deltaY;
+		yStep = 1;
+	}
+
+	Common::Point p(p1);
+	int16 steps = deltaX - deltaY + 1;
+	int16 err = deltaX + deltaY;
+
+	while (1) {
+		_display->putPixel(p, color);
+
+		if (--steps == 0)
+			return;
+
+		if (err < 0) {
+			p.y += yStep;
+			err += deltaX;
+		} else {
+			p.x += xStep;
+			err += deltaY;
+		}
+	}
+}
+
+void HiRes1Engine::drawPic(Common::ReadStream &stream, const Common::Point &pos) const {
+	byte x, y;
+	bool bNewLine = false;
+	byte oldX = 0, oldY = 0;
+	while (1) {
+		x = stream.readByte();
+		y = stream.readByte();
+
+		if (stream.err() || stream.eos())
+			error("Failed to read picture");
+
+		if (x == 0xff && y == 0xff)
+			return;
+
+		if (x == 0 && y == 0) {
+			bNewLine = true;
+			continue;
+		}
+
+		x += pos.x;
+		y += pos.y;
+
+		if (y > 160)
+			y = 160;
+
+		if (bNewLine) {
+			_display->putPixel(Common::Point(x, y), 0x7f);
+			bNewLine = false;
+		} else {
+			drawLine(Common::Point(oldX, oldY), Common::Point(x, y), 0x7f);
+		}
+
+		oldX = x;
+		oldY = y;
+	}
+}
+
+Engine *HiRes1Engine_create(OSystem *syst, const AdlGameDescription *gd) {
+	return new HiRes1Engine(syst, gd);
+}
+
+} // End of namespace Adl