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-rw-r--r--engines/adl/hires1.cpp680
1 files changed, 680 insertions, 0 deletions
diff --git a/engines/adl/hires1.cpp b/engines/adl/hires1.cpp
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+++ b/engines/adl/hires1.cpp
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+/* 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/scummsys.h"
+
+#include "common/config-manager.h"
+#include "common/debug.h"
+#include "common/debug-channels.h"
+#include "common/error.h"
+#include "common/file.h"
+#include "common/fs.h"
+#include "common/system.h"
+#include "common/events.h"
+#include "common/stream.h"
+#include "graphics/palette.h"
+
+#include "engines/util.h"
+
+#include "adl/hires1.h"
+#include "adl/display.h"
+#include "adl/parser.h"
+
+namespace Adl {
+
+static uint exeStrings[STR_MH_TOTAL] = {
+ 23484, 23375, 23438, 27658, 0x6c31, 27729, 27772, 0x5f1e
+};
+
+HiRes1Engine::HiRes1Engine(OSystem *syst, const AdlGameDescription *gd) :
+ AdlEngine(syst, gd) {
+ _variables.resize(20);
+}
+
+void HiRes1Engine::runIntro() {
+ Common::File file;
+
+ if (!file.open("AUTO LOAD OBJ"))
+ error("Failed to open file");
+
+ file.seek(0x1003);
+ _display->setMode(Display::kModeHires);
+ _display->loadFrameBuffer(file);
+ _display->decodeFrameBuffer();
+ _display->delay(4000);
+
+ if (shouldQuit())
+ return;
+
+ _display->setMode(Display::kModeText);
+
+ Common::File basic;
+ if (!basic.open("MYSTERY.HELLO"))
+ error("Failed to open file");
+
+ Common::String str;
+
+ basic.seek(93);
+ str = readString(basic, '"');
+ _display->printASCIIString(str + '\r');
+
+ basic.seek(299);
+ str = readString(basic, '"');
+ _display->printASCIIString(str + "\r\r");
+
+ basic.seek(365);
+ str = readString(basic, '"');
+ _display->printASCIIString(str + "\r\r");
+
+ basic.seek(601);
+ str = readString(basic, '"');
+ _display->printASCIIString(str + '\r');
+
+ _display->inputKey();
+ if (g_engine->shouldQuit())
+ return;
+
+ _display->setMode(Display::kModeMixed);
+
+ file.seek(15);
+ str = readString(file);
+
+ while (1) {
+ _display->printString(str);
+ Common::String s = _display->inputString();
+
+ if (g_engine->shouldQuit())
+ break;
+
+ if (s.empty())
+ continue;
+
+ if ((byte)s[0] == ('I' | 0x80))
+ break;
+ else if ((byte)s[0] == ('G' | 0x80))
+ return;
+ };
+
+ _display->setMode(Display::kModeText);
+ file.seek(102);
+
+ const int pages[] = { 6, 6, 4, 5, 8, 7, 0 };
+
+ int page = 0;
+ while (pages[page] != 0) {
+ _display->home();
+ printStrings(file, pages[page++]);
+ _display->inputString();
+
+ if (g_engine->shouldQuit())
+ return;
+
+ file.seek(9, SEEK_CUR);
+ }
+}
+
+void HiRes1Engine::drawPic(Common::ReadStream &stream, byte xOffset, byte yOffset) {
+ 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 += xOffset;
+ y += yOffset;
+
+ if (y > 160)
+ y = 160;
+
+ if (bNewLine) {
+ _display->drawPixel(x, y, 0x7f);
+ bNewLine = false;
+ } else {
+ _display->drawLine(Common::Point(oldX, oldY), Common::Point(x, y), 0x7f);
+ }
+
+ oldX = x;
+ oldY = y;
+ }
+}
+
+void HiRes1Engine::drawPic(byte pic, byte xOffset, byte yOffset) {
+ Common::File f;
+ Common::String name = Common::String::format("BLOCK%i", _pictures[pic].block);
+
+ if (!f.open(name))
+ error("Failed to open file");
+
+ f.seek(_pictures[pic].offset);
+ drawPic(f, xOffset, yOffset);
+}
+
+void HiRes1Engine::drawItems() {
+ Common::Array<Item>::const_iterator it;
+
+ uint dropped = 0;
+
+ for (it = _inventory.begin(); it != _inventory.end(); ++it) {
+ if (it->field2 != _room)
+ continue;
+
+ if (it->field7 == 1) {
+ if (_rooms[_room].field8 == _rooms[_room].picture) {
+ const Common::Point &p = _itemOffsets[dropped];
+ if (it->field4)
+ _display->drawRightAngles(_drawings[it->field3 - 1], Common::Point(p.x, p.y), 0, 1, 0x7f);
+ else
+ drawPic(it->field3, p.x, p.y);
+ ++dropped;
+ }
+ continue;
+ }
+
+ Common::Array<byte>::const_iterator it2;
+
+ for (it2 = it->field10.begin(); it2 != it->field10.end(); ++it2) {
+ if (*it2 == _rooms[_room].picture) {
+ if (it->field4)
+ _display->drawRightAngles(_drawings[it->field3 - 1], Common::Point(it->field5, it->field6), 0, 1, 0x7f);
+ else
+ drawPic(it->field3, it->field5, it->field6);
+ continue;
+ }
+ }
+ }
+}
+
+void HiRes1Engine::showRoom() {
+ if (!_isDark) {
+ drawPic(_rooms[_room].picture, 0, 0);
+ drawItems();
+ }
+
+ _display->decodeFrameBuffer();
+ printMessage(_rooms[_room].description, false);
+}
+
+Common::String HiRes1Engine::getExeString(uint idx) {
+ return _exeStrings[idx];
+}
+
+void HiRes1Engine::wordWrap(Common::String &str) {
+ uint end = 39;
+
+ while (1) {
+ if (str.size() <= end)
+ return;
+
+ while (str[end] != APPLECHAR(' '))
+ --end;
+
+ str.setChar(APPLECHAR('\r'), end);
+ end += 40;
+ }
+}
+
+void HiRes1Engine::printMessage(uint idx, bool wait) {
+ // Hardcoded overrides that don't wait after printing
+ // Note: strings may differ slightly from the ones in MESSAGES
+ switch (idx) {
+ case 137:
+ _display->printString(_exeStrings[STR_MH_DIRERR]);
+ return;
+ case 127:
+ _display->printString(_exeStrings[STR_MH_DONTHAVEIT]);
+ return;
+ case 37:
+ _display->printString(_exeStrings[STR_MH_DONTUNDERSTAND]);
+ return;
+ case 7:
+ _display->printString(_exeStrings[STR_MH_GETTINGDARK]);
+ return;
+ }
+
+ Common::String msg = _msgStrings[idx - 1];
+ wordWrap(msg);
+ _display->printString(msg);
+
+ if (wait)
+ _display->delay(14 * 166018 / 1000);
+}
+
+void HiRes1Engine::readCommands(Common::ReadStream &stream, Commands &commands) {
+ while (1) {
+ Command command;
+ command.room = stream.readByte();
+
+ if (command.room == 0xff)
+ return;
+
+ command.verb = stream.readByte();
+ command.noun = stream.readByte();
+
+ byte scriptSize = stream.readByte() - 6;
+
+ command.numCond = stream.readByte();
+ command.numAct = stream.readByte();
+
+ for (uint i = 0; i < scriptSize; ++i)
+ command.script.push_back(stream.readByte());
+
+ if (stream.eos() || stream.err())
+ error("Failed to read commands");
+
+ commands.push_back(command);
+ }
+}
+
+void HiRes1Engine::takeItem(byte noun) {
+ Common::Array<Item>::iterator it;
+
+ for (it = _inventory.begin(); it != _inventory.end(); ++it) {
+ if (it->field1 != noun || it->field2 != _room)
+ continue;
+
+ if (it->field7 == 2) {
+ // It doesn't move
+ printMessage(151);
+ return;
+ }
+
+ if (it->field7 == 1) {
+ it->field2 = 0xfe;
+ it->field7 = 1;
+ return;
+ }
+
+ Common::Array<byte>::const_iterator it2;
+ for (it2 = it->field10.begin(); it->field10.end(); ++it2) {
+ if (*it2 == _rooms[_room].picture) {
+ it->field2 = 0xfe;
+ it->field7 = 1;
+ return;
+ }
+ }
+ }
+
+ // Item not here
+ printMessage(152);
+}
+
+void HiRes1Engine::dropItem(byte noun) {
+ Common::Array<Item>::iterator it;
+
+ for (it = _inventory.begin(); it != _inventory.end(); ++it) {
+ if (it->field1 != noun || it->field2 != 0xfe)
+ continue;
+
+ it->field2 = _room;
+ it->field7 = 1;
+ return;
+ }
+
+ // Don't understand
+ printMessage(37);
+}
+
+void HiRes1Engine::doActions(const Command &command, byte noun, byte offset) {
+ for (uint i = 0; i < command.numAct; ++i) {
+ switch (command.script[offset]) {
+ case 1:
+ _variables[command.script[offset + 2]] += command.script[offset + 1];
+ offset += 3;
+ break;
+ case 2:
+ _variables[command.script[offset + 2]] -= command.script[offset + 1];
+ offset += 3;
+ break;
+ case 3:
+ _variables[command.script[offset + 1]] = command.script[offset + 2];
+ offset += 3;
+ break;
+ case 4: {
+ Common::Array<Item>::const_iterator it;
+
+ for (it = _inventory.begin(); it != _inventory.end(); ++it)
+ if (it->field2 == 0xfe)
+ printMessage(it->field8);
+
+ ++offset;
+ break;
+ }
+ case 5:
+ _inventory[command.script[offset + 1] - 1].field2 = command.script[offset + 2];
+ offset += 3;
+ break;
+ case 6:
+ _rooms[_room].picture = _rooms[_room].field8;
+ _room = command.script[offset + 1];
+ offset += 2;
+ break;
+ case 7:
+ _rooms[_room].picture = command.script[offset + 1];
+ offset += 2;
+ break;
+ case 8:
+ _rooms[_room].field8 = _rooms[_room].picture = command.script[offset + 1];
+ offset += 2;
+ break;
+ case 9:
+ printMessage(command.script[offset + 1]);
+ offset += 2;
+ break;
+ case 0xa:
+ _isDark = false;
+ ++offset;
+ break;
+ case 0xb:
+ _isDark = true;
+ ++offset;
+ break;
+ case 0xf:
+ warning("Save game not implemented");
+ ++offset;
+ break;
+ case 0x10:
+ warning("Load game not implemented");
+ ++offset;
+ break;
+ case 0x11: {
+ _display->printString(_exeStrings[STR_MH_PLAYAGAIN]);
+ Common::String input = _display->inputString();
+ if (input.size() == 0 || input[0] != APPLECHAR('N')) {
+ warning("Restart game not implemented");
+ return;
+ }
+ // Fall-through
+ }
+ case 0xd:
+ printMessage(140);
+ quitGame();
+ return;
+ case 0x12: {
+ byte item = command.script[offset + 1] - 1;
+ _inventory[item].field2 = command.script[offset + 2];
+ _inventory[item].field5 = command.script[offset + 3];
+ _inventory[item].field6 = command.script[offset + 4];
+ offset += 5;
+ break;
+ }
+ case 0x13: {
+ byte item = command.script[offset + 2] - 1;
+ _inventory[item].field3 = command.script[offset + 1];
+ offset += 3;
+ break;
+ }
+ case 0x14:
+ _rooms[_room].picture = _rooms[_room].field8;
+ ++offset;
+ break;
+ case 0x15:
+ case 0x16:
+ case 0x17:
+ case 0x18:
+ case 0x19:
+ case 0x1a: {
+ byte room = _rooms[_room].connections[command.script[offset] - 0x15];
+
+ if (room == 0) {
+ printMessage(137);
+ return;
+ }
+
+ _rooms[_room].picture = _rooms[_room].field8;
+ _room = room;
+ return;
+ }
+ case 0x1b:
+ takeItem(noun);
+ ++offset;
+ break;
+ case 0x1c:
+ dropItem(noun);
+ ++offset;
+ break;
+ case 0x1d:
+ _rooms[command.script[offset + 1]].field8 = _rooms[command.script[offset + 1]].picture = command.script[offset + 2];
+ offset += 3;
+ break;
+ default:
+ error("Invalid action opcode %02x", command.script[offset]);
+ }
+ }
+}
+
+bool HiRes1Engine::checkCommand(const Command &command, byte verb, byte noun) {
+ if (command.room != 0xfe && command.room != _room)
+ return false;
+
+ if (command.verb != 0xfe && command.verb != verb)
+ return false;
+
+ if (command.noun != 0xfe && command.noun != noun)
+ return false;
+
+ uint offset = 0;
+ for (uint i = 0; i < command.numCond; ++i) {
+ switch (command.script[offset]) {
+ case 3:
+ if (_inventory[command.script[offset + 1] - 1].field2 != command.script[offset + 2])
+ return false;
+ offset += 3;
+ break;
+ case 5:
+ if (command.script[offset + 1] > _steps)
+ return false;
+ offset += 2;
+ break;
+ case 6:
+ if (_variables[command.script[offset + 1]] != command.script[offset + 2])
+ return false;
+ offset += 3;
+ break;
+ case 9:
+ if (_rooms[_room].picture != command.script[offset + 1])
+ return false;
+ offset += 2;
+ break;
+ case 10:
+ if (_inventory[command.script[offset + 1] - 1].field3 != command.script[offset + 2])
+ return false;
+ offset += 3;
+ break;
+ default:
+ error("Invalid condition opcode %02x", command.script[offset]);
+ }
+ }
+
+ doActions(command, noun, offset);
+
+ return true;
+}
+
+bool HiRes1Engine::doOneCommand(const Commands &commands, byte verb, byte noun) {
+ Commands::const_iterator it;
+
+ for (it = commands.begin(); it != commands.end(); ++it)
+ if (checkCommand(*it, verb, noun))
+ return true;
+
+ return false;
+}
+
+void HiRes1Engine::doAllCommands(const Commands &commands, byte verb, byte noun) {
+ Commands::const_iterator it;
+
+ for (it = commands.begin(); it != commands.end(); ++it)
+ checkCommand(*it, verb, noun);
+}
+
+void HiRes1Engine::clearScreen() {
+ _display->setMode(Display::kModeMixed);
+ _display->clear(0x00);
+}
+
+void HiRes1Engine::runGame() {
+ runIntro();
+ _display->printASCIIString("\r");
+
+ Common::File f;
+
+ if (!f.open("MESSAGES"))
+ error("Failed to open file");
+
+ while (!f.eos() && !f.err())
+ _msgStrings.push_back(readString(f, APPLECHAR('\r')) + APPLECHAR('\r'));
+
+ f.close();
+
+ if (!f.open("ADVENTURE"))
+ error("Failed to open file");
+
+ // Load strings from executable
+ for (uint idx = 0; idx < STR_MH_TOTAL; ++idx) {
+ f.seek(exeStrings[idx]);
+ _exeStrings.push_back(readString(f));
+ }
+
+ // Load room data from executable
+ f.seek(1280);
+ for (uint i = 0; i < MH_ROOMS; ++i) {
+ struct Room room;
+ f.readByte();
+ room.description = f.readByte();
+ for (uint j = 0; j < 6; ++j)
+ room.connections[j] = f.readByte();
+ room.field8 = f.readByte();
+ room.picture = f.readByte();
+ _rooms.push_back(room);
+ }
+
+ // Load inventory data from executable
+ f.seek(0x100);
+ while (f.readByte() != 0xff) {
+ struct Item item;
+ item.field1 = f.readByte();
+ item.field2 = f.readByte();
+ item.field3 = f.readByte();
+ item.field4 = f.readByte();
+ item.field5 = f.readByte();
+ item.field6 = f.readByte();
+ item.field7 = f.readByte();
+ item.field8 = f.readByte();
+
+ f.readByte();
+
+ byte size = f.readByte();
+
+ for (uint i = 0; i < size; ++i)
+ item.field10.push_back(f.readByte());
+
+ _inventory.push_back(item);
+ }
+
+ // Load picture data from executable
+ f.seek(0x4b00);
+ for (uint i = 0; i < MH_PICS; ++i) {
+ struct Picture pic;
+ pic.block = f.readByte();
+ pic.offset = f.readUint16LE();
+ _pictures.push_back(pic);
+ }
+
+ // Load commands from executable
+ f.seek(0x3D00);
+ readCommands(f, _roomCommands);
+
+ f.seek(0x3C00);
+ readCommands(f, _globalCommands);
+
+ // Load dropped item offsets
+ f.seek(0x68ff);
+ for (uint i = 0; i < MH_ITEM_OFFSETS; ++i) {
+ Common::Point p;
+ p.x = f.readByte();
+ p.y = f.readByte();
+ _itemOffsets.push_back(p);
+ }
+
+ // Load right-angle drawings
+ f.seek(0x4f00);
+ uint16 drawingsTotal = f.readUint16LE();
+ for (uint i = 0; i < drawingsTotal; ++i) {
+ f.seek(0x4f00 + 2 + i * 2);
+ uint16 offset = f.readUint16LE();
+ f.seek(0x4f00 + offset);
+
+ Common::Array<byte> drawing;
+ byte b = f.readByte();
+ while (b != 0) {
+ drawing.push_back(b);
+ b = f.readByte();
+ }
+ _drawings.push_back(drawing);
+ }
+
+ // Title screen shown during loading
+ f.seek(0x1800);
+ _display->loadFrameBuffer(f);
+ _display->decodeFrameBuffer();
+ _display->delay(2000);
+
+ f.seek(0x3800);
+ _parser->loadVerbs(f);
+
+ f.seek(0xf00);
+ _parser->loadNouns(f);
+
+ while (1) {
+ uint verb = 0, noun = 0;
+ clearScreen();
+ showRoom();
+ _parser->getInput(verb, noun);
+
+ if (!doOneCommand(_roomCommands, verb, noun))
+ printMessage(37);
+ doAllCommands(_globalCommands, verb, noun);
+
+ _steps++;
+
+ if (shouldQuit())
+ return;
+ }
+}
+
+AdlEngine *HiRes1Engine__create(OSystem *syst, const AdlGameDescription *gd) {
+ return new HiRes1Engine(syst, gd);
+}
+
+} // End of namespace Adl
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