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MUTATIONOFJB: Load and draw scene background

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LubomirR authored and sev- committed Feb 14, 2018
1 parent 764ee3a commit 95cd6b74426b555e58577be0c46006a60fd77979
@@ -0,0 +1,64 @@
/* 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 "encryptedfile.h"

static const uint8 XOR_TABLE[] = {
0x41, 0x2b, 0x7a, 0x0c, 0xc8, 0xe5, 0x0c, 0xde, 0x45, 0xa8, 0x00, 0xad,
0x70, 0xac, 0x23, 0xe0, 0x0c, 0xde, 0xac, 0x16, 0xa1, 0x1a, 0x70, 0x17,
0x1b, 0x90, 0x34, 0x6e, 0x53, 0xfe, 0xdd, 0x3c, 0xef, 0x74, 0x75, 0x3e,
0x2e, 0xb0, 0x3d, 0x2b, 0x74, 0x6d, 0x59, 0xde, 0xc6, 0x20, 0xb8, 0xf3,
0x7d, 0xfa, 0x4d, 0xbd, 0xdb, 0x3c, 0xc5, 0xcb, 0x57, 0x13, 0x40, 0x6b,
0xb8, 0xad, 0xb9, 0xc1, 0x6a, 0x37, 0x39, 0x80, 0x94, 0xd3, 0xdf, 0x4b,
0xe4, 0xe4, 0x7a, 0x4c, 0x0f, 0x21, 0x27, 0x9a, 0x7e, 0x52, 0x35, 0x58,
0xb4, 0xbc, 0x5a, 0xc9, 0x48, 0x7f, 0xcc, 0xb6, 0x97, 0x7b, 0xf1, 0xd5,
0x88, 0x8c, 0xa9, 0x27, 0xf7, 0x20, 0x68, 0x65, 0xad, 0x6f, 0x9e, 0x07,
0xf8, 0xf6, 0x2c, 0x65, 0x4a, 0xe9, 0xd8, 0x13, 0x6a, 0xb5, 0x14, 0x6f,
0x29, 0xdc, 0x68, 0xf8, 0xa0, 0xb6, 0x73, 0x03, 0x69, 0xe3, 0x4f, 0xb6,
0x59, 0x79, 0xae, 0x93, 0xad, 0x40, 0x27, 0xd0, 0xb5, 0x7a, 0x68, 0x5d,
0x5e, 0x19, 0x53, 0x4f, 0x40, 0x56, 0x3d, 0x10, 0xf8, 0x0a, 0xc6, 0x90,
0x06, 0x45, 0x13, 0x4a, 0x6a, 0xfe, 0x56, 0xeb, 0xbc, 0xd9, 0xee, 0xe0,
0x85, 0x5e, 0x98, 0x23, 0xf9, 0x19, 0x60, 0xf9, 0x7e, 0x8d, 0x61, 0xa0,
0x7c, 0xe1, 0x84, 0xf2, 0x7a, 0xb8, 0xbe, 0x8e, 0x81, 0x9e, 0x87, 0x20,
0x32, 0xf3, 0x8c, 0xb4, 0x2c, 0x4d, 0xc8, 0x50, 0x9b, 0xa5, 0x9c, 0x27,
0x02, 0xd6, 0x7f, 0x2a, 0xaf, 0x46, 0x65, 0xd0, 0x6a, 0xae, 0xfa, 0x53,
0x37, 0x6c, 0x49, 0xb9, 0x4d, 0xcd, 0x6c, 0x6b, 0xa7, 0x2d, 0x66, 0x32,
0xb4, 0xf5, 0x41, 0xd5, 0x18, 0xc4, 0xfd, 0xbe, 0x8a, 0x47, 0x11, 0x50,
0x3d, 0x97, 0x64, 0xda, 0x5a, 0x27, 0x18, 0x60, 0x78, 0x80, 0x86, 0x8a,
0x2a, 0x72, 0x40, 0x89
};

namespace MutationOfJB {

uint32 EncryptedFile::read(void *dataPtr, uint32 dataSize) {
uint8 xorPos = pos() % 256;
const uint32 readBytes = Common::File::read(dataPtr, dataSize);

for (uint32 i = 0; i < readBytes; ++i) {
static_cast<uint8 *>(dataPtr)[i] ^= XOR_TABLE[xorPos];
xorPos++;
}

return readBytes;
}

}
@@ -0,0 +1,32 @@
/* 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/file.h"

namespace MutationOfJB {

class EncryptedFile : public Common::File {
public:
virtual uint32 read(void *dataPtr, uint32 dataSize) override;
};

}
@@ -1,8 +1,10 @@
MODULE := engines/mutationofjb

MODULE_OBJS := \
encryptedfile.o \
detection.o \
mutationofjb.o
mutationofjb.o \
room.o

# This module can be built as a plugin
ifeq ($(ENABLE_MUTATIONOFJB), DYNAMIC_PLUGIN)
@@ -24,15 +24,23 @@

#include "common/debug.h"
#include "common/error.h"
#include "common/system.h"
#include "common/events.h"
#include "graphics/screen.h"

#include "engines/util.h"

#include "mutationofjb/mutationofjb.h"
#include "mutationofjb/room.h"

namespace MutationOfJB {

MutationOfJBEngine::MutationOfJBEngine(OSystem *syst)
: Engine(syst), _console(nullptr) {
: Engine(syst),
_console(nullptr),
_room(nullptr),
_screen(nullptr)
{
debug("MutationOfJBEngine::MutationOfJBEngine");
}

@@ -41,10 +49,20 @@ MutationOfJBEngine::~MutationOfJBEngine() {
}

Common::Error MutationOfJBEngine::run() {
initGraphics(320, 200, false);
_console = new Console(this);
debug("MutationOfJBEngine::run");

initGraphics(320, 200);
_console = new Console(this);
_screen = new Graphics::Screen;
_room = new Room(_screen);
_room->load(13, false);

while(!shouldQuit()) {
Common::Event event;
while (_eventMan->pollEvent(event));
_system->delayMillis(100);
}

return Common::kNoError;
}
}
@@ -26,9 +26,14 @@
#include "engines/engine.h"
#include "gui/debugger.h"

namespace Graphics {
class Screen;
}

namespace MutationOfJB {

class Console;
class Room;

class MutationOfJBEngine : public Engine {
public:
@@ -38,6 +43,8 @@ class MutationOfJBEngine : public Engine {
virtual Common::Error run();
private:
Console *_console;
Room *_room;
Graphics::Screen *_screen;
};

class Console : public GUI::Debugger {
@@ -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();
}

}
@@ -0,0 +1,49 @@
/* 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.
*
*/

#ifndef MUTATIONOFJB_ROOM_H
#define MUTATIONOFJB_ROOM_H

#include "common/scummsys.h"

namespace Graphics {
class Screen;
}

namespace MutationOfJB {

class EncryptedFile;

class Room {
public:
Room(Graphics::Screen *screen);
bool load(uint8 roomNumber, bool roomB);
private:
void loadPalette(EncryptedFile &file);
void loadBackground(EncryptedFile &file, uint32 size);

Graphics::Screen *_screen;
};

}

#endif

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