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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/system.h"
#include "common/debug.h"
#include "common/error.h"
#include "common/file.h"
#include "common/stream.h"
#include "common/memstream.h"
#include "adl/hires6.h"
#include "adl/display.h"
#include "adl/graphics.h"
#include "adl/disk.h"
namespace Adl {
static const char *disks[] = { "DARK1A.DSK", "DARK1B.NIB", "DARK2A.NIB", "DARK2B.NIB" };
#define SECTORS_PER_TRACK 16
#define BYTES_PER_SECTOR 256
static Common::MemoryReadStream *loadSectors(DiskImage *disk, byte track, byte sector = SECTORS_PER_TRACK - 1, byte count = SECTORS_PER_TRACK) {
const int bufSize = count * BYTES_PER_SECTOR;
byte *const buf = (byte *)malloc(bufSize);
byte *p = buf;
while (count-- > 0) {
StreamPtr stream(disk->createReadStream(track, sector, 0, 0));
stream->read(p, BYTES_PER_SECTOR);
if (stream->err() || stream->eos())
error("Error loading from disk image");
p += BYTES_PER_SECTOR;
if (sector > 0)
--sector;
else {
++track;
// Skip VTOC track
if (track == 17)
++track;
sector = SECTORS_PER_TRACK - 1;
}
}
return new Common::MemoryReadStream(buf, bufSize, DisposeAfterUse::YES);
}
void HiRes6Engine::runIntro() const {
DiskImage_DSK *boot(new DiskImage_DSK());
if (!boot->open(disks[0]))
error("Failed to open disk image '%s'", disks[0]);
StreamPtr stream(loadSectors(boot, 11, 1, 96));
_display->setMode(DISPLAY_MODE_HIRES);
_display->loadFrameBuffer(*stream);
_display->updateHiResScreen();
delay(256 * 8609 / 1000);
_display->loadFrameBuffer(*stream);
_display->updateHiResScreen();
delay(256 * 8609 / 1000);
_display->loadFrameBuffer(*stream);
delete boot;
// Load copyright string from boot file
Files_DOS33 *files(new Files_DOS33());
if (!files->open(disks[0]))
error("Failed to open disk image '%s'", disks[0]);
stream.reset(files->createReadStream("\010\010\010\010\010\010"));
Common::String copyright(readStringAt(*stream, 0x103, APPLECHAR('\r')));
delete files;
_display->updateHiResScreen();
_display->home();
_display->setMode(DISPLAY_MODE_MIXED);
_display->moveCursorTo(Common::Point(0, 21));
_display->printString(copyright);
delay(256 * 8609 / 1000);
}
void HiRes6Engine::init() {
DiskImage_DSK *boot(new DiskImage_DSK());
_graphics = new Graphics_v2(*_display);
if (!boot->open(disks[0]))
error("Failed to open disk image '%s'", disks[0]);
StreamPtr stream(loadSectors(boot, 7));
// Read parser messages
_strings.verbError = readStringAt(*stream, 0x666);
_strings.nounError = readStringAt(*stream, 0x6bd);
_strings.enterCommand = readStringAt(*stream, 0x6e9);
// Read line feeds
_strings.lineFeeds = readStringAt(*stream, 0x408);
// Read opcode strings (TODO)
_strings_v2.saveInsert = readStringAt(*stream, 0xad8);
readStringAt(*stream, 0xb95); // Confirm save
// _strings_v2.saveReplace
_strings_v2.restoreInsert = readStringAt(*stream, 0xc07);
// _strings_v2.restoreReplace
_strings.playAgain = readStringAt(*stream, 0xcdf, 0xff);
_messageIds.cantGoThere = IDI_HR6_MSG_CANT_GO_THERE;
_messageIds.dontUnderstand = IDI_HR6_MSG_DONT_UNDERSTAND;
_messageIds.itemDoesntMove = IDI_HR6_MSG_ITEM_DOESNT_MOVE;
_messageIds.itemNotHere = IDI_HR6_MSG_ITEM_NOT_HERE;
_messageIds.thanksForPlaying = IDI_HR6_MSG_THANKS_FOR_PLAYING;
// Load dropped item offsets
stream.reset(boot->createReadStream(0x8, 0x9, 0x16));
for (uint i = 0; i < IDI_HR6_NUM_ITEM_OFFSETS; ++i) {
Common::Point p;
p.x = stream->readByte();
p.y = stream->readByte();
_itemOffsets.push_back(p);
}
_disk = new DiskImage_NIB();
if (!_disk->open(disks[1]))
error("Failed to open disk image '%s'", disks[1]);
// Load item picture data
stream.reset(boot->createReadStream(0xb, 0xd, 0x08));
for (uint i = 0; i < IDI_HR6_NUM_ITEM_PICS; ++i) {
stream->readByte();
_itemPics.push_back(readDataBlockPtr(*stream));
}
// Load global picture data
stream.reset(_disk->createReadStream(0x1f, 0xf, 0x16));
byte picNr;
while ((picNr = stream->readByte()) != 0xff) {
if (stream->eos() || stream->err())
error("Error reading global pic list");
_pictures[picNr] = readDataBlockPtr(*stream);
}
// Load message offsets
stream.reset(_disk->createReadStream(0x1f, 0xb, 0x16, 4));
for (uint i = 0; i < IDI_HR6_NUM_MESSAGES; ++i)
_messages.push_back(readDataBlockPtr(*stream));
// Load commands
stream.reset(_disk->createReadStream(0x21, 0x4, 0x85, 7));
readCommands(*stream, _roomCommands);
stream.reset(_disk->createReadStream(0x20, 0xf, 0x82, 5));
readCommands(*stream, _globalCommands);
// Load verbs
stream.reset(_disk->createReadStream(0x1f, 0xf, 0x56, 6));
loadWords(*stream, _verbs, _priVerbs);
// Load nouns
stream.reset(_disk->createReadStream(0x20, 0x5, 0x8e, 8));
loadWords(*stream, _nouns, _priNouns);
delete boot;
}
void HiRes6Engine::initState() {
_linesPrinted = 0;
_state = State();
_state.vars.resize(IDI_HR6_NUM_VARS);
StreamPtr stream(_disk->createReadStream(0x20, 0xd, 0x94, 2));
for (uint i = 0; i < IDI_HR6_NUM_ROOMS; ++i) {
Room room;
stream->readByte(); // number
for (uint j = 0; j < 6; ++j)
room.connections[j] = stream->readByte();
room.data = readDataBlockPtr(*stream);
room.picture = stream->readByte();
room.curPicture = stream->readByte();
room.isFirstTime = stream->readByte();
_state.rooms.push_back(room);
}
stream.reset(_disk->createReadStream(0x22, 0x0, 0x07, 0));
byte id;
while ((id = stream->readByte()) != 0xff) {
Item item = { };
item.id = id;
item.noun = stream->readByte();
item.room = stream->readByte();
item.picture = stream->readByte();
item.isLineArt = stream->readByte(); // Now seems to be disk number
item.position.x = stream->readByte();
item.position.y = stream->readByte();
item.state = stream->readByte();
item.description = stream->readByte();
stream->readByte(); // Struct size
byte picListSize = stream->readByte();
// Flag to keep track of what has been drawn on the screen
stream->readByte();
for (uint i = 0; i < picListSize; ++i)
item.roomPictures.push_back(stream->readByte());
_state.items.push_back(item);
}
}
void HiRes6Engine::applyDataBlockOffset(byte &track, byte §or) const {
// FIXME: this uses a table
++track;
}
Engine *HiRes6Engine_create(OSystem *syst, const AdlGameDescription *gd) {
return new HiRes6Engine(syst, gd);
}
} // End of namespace Adl
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