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Diffstat (limited to 'engines/mutationofjb/room.cpp')
-rw-r--r-- | engines/mutationofjb/room.cpp | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/engines/mutationofjb/room.cpp b/engines/mutationofjb/room.cpp new file mode 100644 index 0000000000..e927971858 --- /dev/null +++ b/engines/mutationofjb/room.cpp @@ -0,0 +1,129 @@ +/* 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 "mutationofjb/room.h" +#include "mutationofjb/encryptedfile.h" +#include "graphics/screen.h" +#include "engines/engine.h" +#include "common/translation.h" + +namespace MutationOfJB { + +Room::Room(Graphics::Screen *screen) : _screen(screen) {} + +bool Room::load(uint8 roomNumber, bool roomB) { + EncryptedFile file; + Common::String fileName = Common::String::format("room%d%s.dat", roomNumber, roomB ? "b" : ""); + + file.open(fileName); + + if (!file.isOpen()) { + Common::String errorMessage = Common::String::format(_("Unable to locate the '%s' engine data file."), fileName.c_str()); + GUIErrorMessage(errorMessage); + warning("%s", errorMessage.c_str()); + + return false; + } + + file.seek(0x80); + + while (!file.eos()) { + // Record. + const uint32 length = file.readUint32LE(); + uint8 info[4] = {0}; + file.read(info, 4); + + // TODO Find out what these are. + uint32 unknown; + unknown = file.readUint32LE(); + unknown = file.readUint32LE(); + + // Subrecords. + if (info[0] == 0xFA && info[1] == 0xF1) { + for (int i = 0; i < info[2]; ++i) { + const uint32 subLength = file.readUint32LE(); + const uint16 type = file.readUint16LE(); + + if (type == 0x0B) { + loadPalette(file); + } else if (type == 0x0F) { + loadBackground(file, subLength - 6); + } + } + } + } + + file.close(); + + return true; +} + +void Room::loadPalette(EncryptedFile &file) { + uint32 unknown; + + // TODO Find out what this is. + unknown = file.readUint32LE(); + + uint8 palette[PALETTE_SIZE]; + file.read(palette, PALETTE_SIZE); + + for (int j = 0; j < PALETTE_SIZE; ++j) { + palette[j] <<= 2; // Uses 6-bit colors. + } + + _screen->setPalette(palette); +} + +void Room::loadBackground(EncryptedFile &file, uint32 size) { + _screen->clear(); + + uint8 * const pixels = static_cast<uint8 *>(_screen->getPixels()); + uint8 *ptr = pixels; + uint32 readBytes = 0; + + while (readBytes != size) { + uint8 no = file.readByte(); + readBytes++; + while (no--) { + uint8 n = file.readByte(); + readBytes++; + if (n < 0x80) { + // RLE - Copy color n times. + uint8 color = file.readByte(); + readBytes++; + while(n--) { + *ptr++ = color; + } + } else { + // Take next 0x100 - n bytes as they are. + const uint32 rawlen = 0x100 - n; + file.read(ptr, rawlen); + readBytes += rawlen; + ptr += rawlen; + } + } + } + + _screen->update(); +} + +} |