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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 "audio/mods/protracker.h"
#include "common/config-manager.h"
#include "common/debug.h"
#include "common/debug-channels.h"
#include "common/endian.h"
#include "common/error.h"
#include "common/events.h"
#include "common/file.h"
#include "common/fs.h"
#include "common/memstream.h"
#include "common/savefile.h"
#include "common/str.h"
#include "common/system.h"
#include "common/translation.h"
#include "engines/util.h"
#include "graphics/cursorman.h"
#include "graphics/surface.h"
#include "graphics/screen.h"
#include "graphics/palette.h"
#include "graphics/thumbnail.h"
#include "gui/saveload.h"
#include "supernova/supernova.h"
#include "supernova/state.h"
namespace Supernova {
const AudioInfo audioInfo[kAudioNumSamples] = {
{44, 0, -1},
{45, 0, -1},
{46, 0, 2510},
{46, 2510, 4020},
{46, 4020, -1},
{47, 0, 24010},
{47, 24010, -1},
{48, 0, 2510},
{48, 2510, 10520},
{48, 10520, 13530},
{48, 13530, -1},
{50, 0, 12786},
{50, 12786, -1},
{51, 0, -1},
{53, 0, -1},
{54, 0, 8010},
{54, 8010, 24020},
{54, 24020, 30030},
{54, 30030, 31040},
{54, 31040, -1}
};
const Object Object::nullObject;
ObjectType operator|(ObjectType a, ObjectType b) {
return static_cast<ObjectType>(+a | +b);
}
ObjectType operator&(ObjectType a, ObjectType b) {
return static_cast<ObjectType>(+a & +b);
}
ObjectType operator^(ObjectType a, ObjectType b) {
return static_cast<ObjectType>(+a ^ +b);
}
ObjectType &operator|=(ObjectType &a, ObjectType b) {
return a = a | b;
}
ObjectType &operator&=(ObjectType &a, ObjectType b) {
return a = a & b;
}
ObjectType &operator^=(ObjectType &a, ObjectType b) {
return a = a ^ b;
}
SupernovaEngine::SupernovaEngine(OSystem *syst)
: Engine(syst)
, _console(NULL)
, _gm(NULL)
, _currentImage(NULL)
, _soundMusicIntro(NULL)
, _soundMusicOutro(NULL)
, _rnd("supernova")
, _brightness(255)
, _menuBrightness(255)
, _delay(33)
, _textSpeed(kTextSpeed[2])
, _screenWidth(320)
, _screenHeight(200)
, _messageDisplayed(false)
, _allowLoadGame(true)
, _allowSaveGame(true)
{
// const Common::FSNode gameDataDir(ConfMan.get("path"));
// SearchMan.addSubDirectoryMatching(gameDataDir, "sound");
if (ConfMan.hasKey("textspeed"))
_textSpeed = ConfMan.getInt("textspeed");
// setup engine specific debug channels
DebugMan.addDebugChannel(kDebugGeneral, "general", "Supernova general debug channel");
}
SupernovaEngine::~SupernovaEngine() {
DebugMan.clearAllDebugChannels();
delete _currentImage;
delete _console;
delete _gm;
delete _soundMusicIntro;
delete _soundMusicOutro;
}
Common::Error SupernovaEngine::run() {
initGraphics(_screenWidth, _screenHeight);
Common::Error status = loadGameStrings();
if (status.getCode() != Common::kNoError)
return status;
_gm = new GameManager(this);
_console = new Console(this, _gm);
initData();
initPalette();
CursorMan.replaceCursor(_mouseNormal, 16, 16, 0, 0, kColorCursorTransparent);
CursorMan.replaceCursorPalette(initVGAPalette, 0, 16);
CursorMan.showMouse(true);
setTotalPlayTime(0);
int saveSlot = ConfMan.getInt("save_slot");
if (saveSlot >= 0) {
if (loadGameState(saveSlot).getCode() != Common::kNoError)
error("Failed to load save game from slot %i", saveSlot);
}
while (!shouldQuit()) {
uint32 start = _system->getMillis();
updateEvents();
_gm->executeRoom();
_console->onFrame();
_system->updateScreen();
int end = _delay - (_system->getMillis() - start);
if (end > 0)
_system->delayMillis(end);
}
stopSound();
return Common::kNoError;
}
void SupernovaEngine::updateEvents() {
_gm->handleTime();
if (_gm->_animationEnabled && !_messageDisplayed && _gm->_animationTimer == 0)
_gm->_currentRoom->animation();
if (_gm->_state._eventCallback != kNoFn && _gm->_state._time >= _gm->_state._eventTime) {
_allowLoadGame = false;
_allowSaveGame = false;
_gm->_state._eventTime = kMaxTimerValue;
EventFunction fn = _gm->_state._eventCallback;
_gm->_state._eventCallback = kNoFn;
switch (fn) {
case kNoFn:
break;
case kSupernovaFn:
_gm->supernovaEvent();
break;
case kGuardReturnedFn:
_gm->guardReturnedEvent();
break;
case kGuardWalkFn:
_gm->guardWalkEvent();
break;
case kTaxiFn:
_gm->taxiEvent();
break;
case kSearchStartFn:
_gm->searchStartEvent();
break;
}
_allowLoadGame = true;
_allowSaveGame = true;
return;
}
if (_gm->_state._alarmOn && _gm->_state._timeAlarm <= _gm->_state._time) {
_gm->_state._alarmOn = false;
_gm->alarm();
return;
}
_gm->_mouseClicked = false;
_gm->_keyPressed = false;
while (g_system->getEventManager()->pollEvent(_event)) {
switch (_event.type) {
case Common::EVENT_KEYDOWN:
_gm->_keyPressed = true;
if (_event.kbd.keycode == Common::KEYCODE_d &&
(_event.kbd.flags & Common::KBD_CTRL)) {
_console->attach();
}
if (_event.kbd.keycode == Common::KEYCODE_x &&
(_event.kbd.flags & Common::KBD_CTRL)) {
// TODO: Draw exit box
}
_gm->processInput(_event.kbd);
break;
case Common::EVENT_LBUTTONUP:
// fallthrough
case Common::EVENT_RBUTTONUP:
if (_gm->_currentRoom->getId() != INTRO && _mixer->isSoundHandleActive(_soundHandle))
return;
_gm->_mouseClicked = true;
// fallthrough
case Common::EVENT_MOUSEMOVE:
_gm->_mouseClickType = _event.type;
_gm->_mouseX = _event.mouse.x;
_gm->_mouseY = _event.mouse.y;
if (_gm->_guiEnabled)
_gm->processInput();
break;
default:
break;
}
}
}
bool SupernovaEngine::hasFeature(EngineFeature f) const {
switch (f) {
case kSupportsRTL:
return true;
case kSupportsLoadingDuringRuntime:
return true;
case kSupportsSavingDuringRuntime:
return true;
default:
return false;
}
}
void SupernovaEngine::pauseEngineIntern(bool pause) {
_mixer->pauseAll(pause);
_gm->pauseTimer(pause);
}
Common::Error SupernovaEngine::loadGameStrings() {
Common::String cur_lang = ConfMan.get("language");
Common::String string_id("TEXT");
// Note: we don't print any warning or errors here if we cannot find the file
// or the format is not as expected. We will get those warning when reading the
// strings anyway (actually the engine will even refuse to start).
Common::File f;
if (!f.open(SUPERNOVA_DAT)) {
Common::String msg = Common::String::format(_("Unable to locate the '%s' engine data file."), SUPERNOVA_DAT);
GUIErrorMessage(msg);
return Common::kReadingFailed;
}
// Validate the data file header
char id[5], lang[5];
id[4] = lang[4] = '\0';
f.read(id, 3);
if (strncmp(id, "MSN", 3) != 0) {
Common::String msg = Common::String::format(_("The '%s' engine data file is corrupt."), SUPERNOVA_DAT);
GUIErrorMessage(msg);
return Common::kReadingFailed;
}
int version = f.readByte();
if (version != SUPERNOVA_DAT_VERSION) {
Common::String msg = Common::String::format(
_("Incorrect version of the '%s' engine data file found. Expected %d but got %d."),
SUPERNOVA_DAT, SUPERNOVA_DAT_VERSION, version);
GUIErrorMessage(msg);
return Common::kReadingFailed;
}
while (!f.eos()) {
f.read(id, 4);
f.read(lang, 4);
uint32 size = f.readUint32LE();
if (f.eos())
break;
if (string_id == id && cur_lang == lang) {
while (size > 0) {
Common::String s;
char ch;
while ((ch = (char)f.readByte()) != '\0')
s += ch;
_gameStrings.push_back(s);
size -= s.size() + 1;
}
return Common::kNoError;
} else
f.skip(size);
}
Common::Language l = Common::parseLanguage(cur_lang);
Common::String msg = Common::String::format(_("Unable to locate the text for %s language in '%s' engine data file."), Common::getLanguageDescription(l), SUPERNOVA_DAT);
GUIErrorMessage(msg);
return Common::kReadingFailed;
}
void SupernovaEngine::initData() {
// Sound
// Note:
// - samples start with a header of 6 bytes: 01 SS SS 00 AD 00
// where SS SS (LE uint16) is the size of the sound sample + 2
// - samples end with a footer of 4 bytes: 00 00
// Skip those in the buffer
Common::File file;
for (int i = 0; i < kAudioNumSamples; ++i) {
if (!file.open(Common::String::format("msn_data.%03d", audioInfo[i]._filenumber))) {
error("File %s could not be read!", file.getName());
}
if (audioInfo[i]._offsetEnd == -1) {
file.seek(0, SEEK_END);
_soundSamples[i]._length = file.pos() - audioInfo[i]._offsetStart - 10;
} else {
_soundSamples[i]._length = audioInfo[i]._offsetEnd - audioInfo[i]._offsetStart - 10;
}
_soundSamples[i]._buffer = new byte[_soundSamples[i]._length];
file.seek(audioInfo[i]._offsetStart + 6);
file.read(_soundSamples[i]._buffer, _soundSamples[i]._length);
file.close();
}
_soundMusicIntro = convertToMod("msn_data.049");
_soundMusicOutro = convertToMod("msn_data.052");
// Cursor
const uint16 *bufferNormal = reinterpret_cast<const uint16 *>(mouseNormal);
const uint16 *bufferWait = reinterpret_cast<const uint16 *>(mouseWait);
for (uint i = 0; i < sizeof(mouseNormal) / 4; ++i) {
for (uint bit = 0; bit < 16; ++bit) {
uint mask = 0x8000 >> bit;
uint bitIndex = i * 16 + bit;
_mouseNormal[bitIndex] = (READ_LE_UINT16(bufferNormal + i) & mask) ? kColorCursorTransparent : kColorBlack;
if (READ_LE_UINT16(bufferNormal + i + 16) & mask)
_mouseNormal[bitIndex] = kColorLightRed;
_mouseWait[bitIndex] = (READ_LE_UINT16(bufferWait + i) & mask) ? kColorCursorTransparent : kColorBlack;
if (READ_LE_UINT16(bufferWait + i + 16) & mask)
_mouseWait[bitIndex] = kColorLightRed;
}
}
}
void SupernovaEngine::initPalette() {
_system->getPaletteManager()->setPalette(initVGAPalette, 0, 256);
}
void SupernovaEngine::playSound(AudioIndex sample) {
if (sample > kAudioNumSamples - 1)
return;
Audio::SeekableAudioStream *audioStream = Audio::makeRawStream(
_soundSamples[sample]._buffer, _soundSamples[sample]._length,
11931, Audio::FLAG_UNSIGNED | Audio::FLAG_LITTLE_ENDIAN, DisposeAfterUse::NO);
stopSound();
_mixer->playStream(Audio::Mixer::kPlainSoundType, &_soundHandle, audioStream);
}
void SupernovaEngine::stopSound() {
if (_mixer->isSoundHandleActive(_soundHandle))
_mixer->stopHandle(_soundHandle);
}
void SupernovaEngine::playSoundMod(int filenumber)
{
Audio::AudioStream *audioStream;
if (filenumber == 49)
audioStream = Audio::makeProtrackerStream(_soundMusicIntro);
else if (filenumber == 52)
audioStream = Audio::makeProtrackerStream(_soundMusicOutro);
else
return;
stopSound();
_mixer->playStream(Audio::Mixer::kMusicSoundType, &_soundHandle, audioStream,
-1, Audio::Mixer::kMaxChannelVolume, 0);
}
void SupernovaEngine::renderImageSection(int section) {
// Note: inverting means we are removing the section. So we should get the rect for that
// section but draw the background (section 0) instead.
bool invert = false;
if (section > 128) {
section -= 128;
invert = true;
}
if (!_currentImage || section > _currentImage->_numSections - 1)
return;
Common::Rect sectionRect(_currentImage->_section[section].x1,
_currentImage->_section[section].y1,
_currentImage->_section[section].x2 + 1,
_currentImage->_section[section].y2 + 1) ;
if (_currentImage->_filenumber == 1 || _currentImage->_filenumber == 2) {
sectionRect.setWidth(640);
sectionRect.setHeight(480);
if (_screenWidth != 640) {
_screenWidth = 640;
_screenHeight = 480;
initGraphics(_screenWidth, _screenHeight);
}
} else {
if (_screenWidth != 320) {
_screenWidth = 320;
_screenHeight = 200;
initGraphics(_screenWidth, _screenHeight);
}
}
uint offset = 0;
int pitch = sectionRect.width();
if (invert) {
pitch = _currentImage->_pitch;
offset = _currentImage->_section[section].y1 * pitch + _currentImage->_section[section].x1;
section = 0;
}
_system->copyRectToScreen(static_cast<const byte *>(_currentImage->_sectionSurfaces[section]->getPixels()) + offset,
pitch,
sectionRect.left, sectionRect.top,
sectionRect.width(), sectionRect.height());
}
void SupernovaEngine::renderImage(int section) {
if (!_currentImage)
return;
bool sectionVisible = true;
if (section > 128) {
sectionVisible = false;
section -= 128;
}
_gm->_currentRoom->setSectionVisible(section, sectionVisible);
do {
if (sectionVisible)
renderImageSection(section);
else
renderImageSection(section + 128);
section = _currentImage->_section[section].next;
} while (section != 0);
}
bool SupernovaEngine::setCurrentImage(int filenumber) {
if (_currentImage && _currentImage->_filenumber == filenumber)
return true;
delete _currentImage;
_currentImage = new MSNImageDecoder();
if (!_currentImage->init(filenumber)) {
delete _currentImage;
_currentImage = NULL;
return false;
}
_system->getPaletteManager()->setPalette(_currentImage->getPalette(), 16, 239);
paletteBrightness();
return true;
}
void SupernovaEngine::saveScreen(int x, int y, int width, int height) {
_screenBuffer.push(x, y, width, height);
}
void SupernovaEngine::restoreScreen() {
_screenBuffer.restore();
}
void SupernovaEngine::renderRoom(Room &room) {
if (room.getId() == INTRO)
return;
if (setCurrentImage(room.getFileNumber())) {
for (int i = 0; i < _currentImage->_numSections; ++i) {
int section = i;
if (room.isSectionVisible(section)) {
do {
renderImageSection(section);
section = _currentImage->_section[section].next;
} while (section != 0);
}
}
}
}
int SupernovaEngine::textWidth(const uint16 key) {
char text[2];
text[0] = key & 0xFF;
text[1] = 0;
return textWidth(text);
}
int SupernovaEngine::textWidth(const char *text) {
int charWidth = 0;
while (*text != '\0') {
byte c = *text++;
if (c < 32) {
continue;
} else if (c == 225) {
c = 35;
}
for (uint i = 0; i < 5; ++i) {
if (font[c - 32][i] == 0xff) {
break;
}
++charWidth;
}
++charWidth;
}
return charWidth;
}
void SupernovaEngine::renderMessage(const char *text, MessagePosition position) {
Common::String t(text);
char *row[20];
Common::String::iterator p = t.begin();
uint numRows = 0;
int rowWidthMax = 0;
int x = 0;
int y = 0;
byte textColor = 0;
while (*p != '\0') {
row[numRows] = p;
++numRows;
while ((*p != '\0') && (*p != '|')) {
++p;
}
if (*p == '|') {
*p = '\0';
++p;
}
}
for (uint i = 0; i < numRows; ++i) {
int rowWidth = textWidth(row[i]);
if (rowWidth > rowWidthMax)
rowWidthMax = rowWidth;
}
switch (position) {
case kMessageNormal:
x = 160 - rowWidthMax / 2;
textColor = kColorWhite99;
break;
case kMessageTop:
x = 160 - rowWidthMax / 2;
textColor = kColorLightYellow;
break;
case kMessageCenter:
x = 160 - rowWidthMax / 2;
textColor = kColorLightRed;
break;
case kMessageLeft:
x = 3;
textColor = kColorLightYellow;
break;
case kMessageRight:
x = 317 - rowWidthMax;
textColor = kColorLightGreen;
break;
}
if (position == kMessageNormal) {
y = 70 - ((numRows * 9) / 2);
} else if (position == kMessageTop) {
y = 5;
} else {
y = 142;
}
int message_columns = x - 3;
int message_rows = y - 3;
int message_width = rowWidthMax + 6;
int message_height = numRows * 9 + 5;
saveScreen(message_columns, message_rows, message_width, message_height);
renderBox(message_columns, message_rows, message_width, message_height, kColorWhite35);
for (uint i = 0; i < numRows; ++i) {
renderText(row[i], x, y, textColor);
y += 9;
}
_messageDisplayed = true;
_gm->_timer1 = (Common::strnlen(text, 512) + 20) * _textSpeed / 10;
}
void SupernovaEngine::removeMessage() {
if (_messageDisplayed) {
restoreScreen();
_messageDisplayed = false;
}
}
void SupernovaEngine::renderText(const char *text, int x, int y, byte color) {
Graphics::Surface *screen = _system->lockScreen();
byte *cursor = static_cast<byte *>(screen->getBasePtr(x, y));
const byte *basePtr = cursor;
byte c;
while ((c = *text++) != '\0') {
if (c < 32) {
continue;
} else if (c == 225) {
c = 128;
}
for (uint i = 0; i < 5; ++i) {
if (font[c - 32][i] == 0xff) {
break;
}
byte *ascentLine = cursor;
for (byte j = font[c - 32][i]; j != 0; j >>= 1) {
if (j & 1) {
*cursor = color;
}
cursor += kScreenWidth;
}
cursor = ++ascentLine;
}
++cursor;
}
_system->unlockScreen();
uint numChars = cursor - basePtr;
uint absPosition = y * kScreenWidth + x + numChars;
_textCursorX = absPosition % kScreenWidth;
_textCursorY = absPosition / kScreenWidth;
_textColor = color;
}
void SupernovaEngine::renderText(const uint16 character, int x, int y, byte color) {
char text[2];
text[0] = character & 0xFF;
text[1] = 0;
renderText(text, x, y, color);
}
void SupernovaEngine::renderText(const char *text) {
renderText(text, _textCursorX, _textCursorY, _textColor);
}
void SupernovaEngine::renderText(const uint16 character) {
char text[2];
text[0] = character & 0xFF;
text[1] = 0;
renderText(text, _textCursorX, _textCursorY, _textColor);
}
void SupernovaEngine::renderBox(int x, int y, int width, int height, byte color) {
Graphics::Surface *screen = _system->lockScreen();
screen->fillRect(Common::Rect(x, y, x + width, y + height), color);
_system->unlockScreen();
}
void SupernovaEngine::paletteBrightness() {
byte palette[768];
_system->getPaletteManager()->grabPalette(palette, 0, 255);
for (uint i = 0; i < 48; ++i) {
palette[i] = (initVGAPalette[i] * _menuBrightness) >> 8;
}
for (uint i = 0; i < 717; ++i) {
const byte *imagePalette;
if (_currentImage && _currentImage->getPalette()) {
imagePalette = _currentImage->getPalette();
} else {
imagePalette = palette + 48;
}
palette[i + 48] = (imagePalette[i] * _brightness) >> 8;
}
_system->getPaletteManager()->setPalette(palette, 0, 255);
}
void SupernovaEngine::paletteFadeOut() {
while (_menuBrightness > 10) {
_menuBrightness -= 10;
if (_brightness > _menuBrightness)
_brightness = _menuBrightness;
paletteBrightness();
_system->updateScreen();
_system->delayMillis(_delay);
}
_menuBrightness = 0;
_brightness = 0;
paletteBrightness();
_system->updateScreen();
}
void SupernovaEngine::paletteFadeIn() {
while (_menuBrightness < 245) {
if (_brightness < _gm->_roomBrightness)
_brightness += 10;
_menuBrightness += 10;
paletteBrightness();
_system->updateScreen();
_system->delayMillis(_delay);
}
_menuBrightness = 255;
_brightness = _gm->_roomBrightness;
paletteBrightness();
_system->updateScreen();
}
void SupernovaEngine::setColor63(byte value) {
byte color[3] = {value, value, value};
_system->getPaletteManager()->setPalette(color, 63, 1);
}
void SupernovaEngine::setTextSpeed() {
const Common::String& textSpeedString = getGameString(kStringTextSpeed);
int stringWidth = textWidth(textSpeedString);
int textX = (320 - stringWidth) / 2;
int textY = 100;
stringWidth += 4;
int boxX = stringWidth > 110 ? (320 - stringWidth) / 2 : 105;
int boxY = 97;
int boxWidth = stringWidth > 110 ? stringWidth : 110;
int boxHeight = 27;
_gm->animationOff();
_gm->saveTime();
saveScreen(boxX, boxY, boxWidth, boxHeight);
renderBox(boxX, boxY, boxWidth, boxHeight, kColorBlue);
renderText(textSpeedString, textX, textY, kColorWhite99); // Text speed
// Find the closest index in kTextSpeed for the current _textSpeed.
// Important note: values in kTextSpeed decrease with the index.
int speedIndex = 0;
while (speedIndex < 4 && _textSpeed < (kTextSpeed[speedIndex] + kTextSpeed[speedIndex+1]) / 2)
++speedIndex;
char nbString[2];
nbString[1] = 0;
for (int i = 0; i < 5; ++i) {
byte color = i == speedIndex ? kColorWhite63 : kColorWhite35;
renderBox(110 + 21 * i, 111, 16, 10, color);
nbString[0] = '1' + i;
renderText(nbString, 115 + 21 * i, 112, kColorWhite99);
}
do {
_gm->getInput();
int key = _gm->_keyPressed ? _gm->_key.keycode : Common::KEYCODE_INVALID;
if (!_gm->_keyPressed && _gm->_mouseClicked && _gm->_mouseY >= 111 && _gm->_mouseY < 121 && (_gm->_mouseX + 16) % 21 < 16)
key = Common::KEYCODE_0 - 5 + (_gm->_mouseX + 16) / 21;
if (key == Common::KEYCODE_ESCAPE)
break;
else if (key >= Common::KEYCODE_1 && key <= Common::KEYCODE_5) {
speedIndex = key - Common::KEYCODE_1;
_textSpeed = kTextSpeed[speedIndex];
ConfMan.setInt("textspeed", _textSpeed);
break;
}
} while (!shouldQuit());
_gm->resetInputState();
restoreScreen();
_gm->loadTime();
_gm->animationOn();
}
Common::MemoryReadStream *SupernovaEngine::convertToMod(const char *filename, int version) {
// MSN format
struct {
uint16 seg;
uint16 start;
uint16 end;
uint16 loopStart;
uint16 loopEnd;
char volume;
char dummy[5];
} instr2[22];
int nbInstr2; // 22 for version1, 15 for version 2
int16 songLength;
char arrangement[128];
int16 patternNumber;
int32 note2[28][64][4];
nbInstr2 = ((version == 1) ? 22 : 15);
Common::File msnFile;
msnFile.open(filename);
if (!msnFile.isOpen()) {
warning("Data file '%s' not found", msnFile.getName());
return NULL;
}
for (int i = 0 ; i < nbInstr2 ; ++i) {
instr2[i].seg = msnFile.readUint16LE();
instr2[i].start = msnFile.readUint16LE();
instr2[i].end = msnFile.readUint16LE();
instr2[i].loopStart = msnFile.readUint16LE();
instr2[i].loopEnd = msnFile.readUint16LE();
instr2[i].volume = msnFile.readByte();
msnFile.read(instr2[i].dummy, 5);
}
songLength = msnFile.readSint16LE();
msnFile.read(arrangement, 128);
patternNumber = msnFile.readSint16LE();
for (int p = 0 ; p < patternNumber ; ++p) {
for (int n = 0 ; n < 64 ; ++n) {
for (int k = 0 ; k < 4 ; ++k) {
note2[p][n][k] = msnFile.readSint32LE();
}
}
}
/* MOD format */
struct {
char iname[22];
uint16 length;
char finetune;
char volume;
uint16 loopStart;
uint16 loopLength;
} instr[31];
int32 note[28][64][4];
// We can't recover some MOD effects since several of them are mapped to 0.
// Assume the MSN effect of value 0 is Arpeggio (MOD effect of value 0).
const char invConvEff[8] = {0, 1, 2, 3, 10, 12, 13 ,15};
// Reminder from convertToMsn
// 31 30 29 28 27 26 25 24 - 23 22 21 20 19 18 17 16 - 15 14 13 12 11 10 09 08 - 07 06 05 04 03 02 01 00
// h h h h g g g g f f f f e e e e d d d d c c c c b b b b a a a a
//
// MSN:
// hhhh (4 bits) Cleared to 0
// dddd c (5 bits) Sample index | after mapping through convInstr
// ccc (3 bits) Effect type | after mapping through convEff
// bbbb aaaa (8 bits) Effect value | unmodified
// gggg ffff eeee (12 bits) Sample period | unmodified
//
// MS2:
// hhhh (4 bits) Cleared to 0
// dddd (4 bits) Sample index | after mapping through convInstr
// cccc (4 bits) Effect type | unmodified
// bbbb aaaa (8 bits) Effect value | unmodified
// gggg ffff eeee (12 bits) Sample period | transformed (0xE000 / p) - 256
//
// MOD:
// hhhh dddd (8 bits) Sample index
// cccc (4 bits) Effect type for this channel/division
// bbbb aaaa (8 bits) Effect value
// gggg ffff eeee (12 bits) Sample period
// Can we recover the instruments mapping? I don't think so as part of the original instrument index is cleared.
// And it doesn't really matter as long as we are consistent.
// However we need to make sure 31 (or 15 in MS2) is mapped to 0 in MOD.
// We just add 1 to all other values, and this means a 1 <-> 1 mapping for the instruments
for (int p = 0; p < patternNumber; ++p) {
for (int n = 0; n < 64; ++n) {
for (int k = 0; k < 4; ++k) {
int32* l = &(note[p][n][k]);
*l = note2[p][n][k];
int32 i = 0;
if (nbInstr2 == 22) { // version 1
i = ((*l & 0xF800) >> 11);
int32 e = ((*l & 0x0700) >> 8);
int32 e1 = invConvEff[e];
*l &= 0x0FFF00FF;
*l |= (e1 << 8);
} else { // version 2
int32 h = (*l >> 16);
i = ((*l & 0xF000) >> 12);
*l &= 0x00000FFF;
if (h)
h = 0xE000 / (h + 256);
*l |= (h << 16);
if (i == 15)
i = 31;
}
// Add back index in note
if (i != 31) {
++i;
*l |= ((i & 0x0F) << 12);
*l |= ((i & 0xF0) << 24);
}
}
}
}
for (int i = 0; i < 31; ++i) {
// iname is not stored in the mod file. Just set it to 'instrument#'
// finetune is not stored either. Assume 0.
memset(instr[i].iname, 0, 22);
sprintf(instr[i].iname, "instrument%d", i+1);
instr[i].length = 0;
instr[i].finetune = 0;
instr[i].volume = 0;
instr[i].loopStart = 0;
instr[i].loopLength = 0;
if (i < nbInstr2) {
instr[i].length = ((instr2[i].end - instr2[i].start) >> 1);
instr[i].loopStart = ((instr2[i].loopStart - instr2[i].start) >> 1);
instr[i].loopLength = (( instr2[i].loopEnd - instr2[i].loopStart) >> 1);
instr[i].volume = instr2[i].volume;
}
}
// The ciaaSpeed is kind of useless and not present in the MSN file.
// Traditionally 0x78 in SoundTracker. Was used in NoiseTracker as a restart point.
// ProTracker uses 0x7F. FastTracker uses it as a restart point, whereas ScreamTracker 3 uses 0x7F like ProTracker.
// You can use this to roughly detect which tracker made a MOD, and detection gets more accurate for more obscure MOD types.
char ciaaSpeed = 0x7F;
// The mark cannot be recovered either. Since we have 4 channels and 31 instrument it can be either ID='M.K.' or ID='4CHN'.
// Assume 'M.K.'
const char mark[4] = { 'M', '.', 'K', '.' };
Common::MemoryWriteStreamDynamic buffer(DisposeAfterUse::NO);
buffer.write(msnFile.getName(), 19);
buffer.writeByte(0);
for (int i = 0 ; i < 31 ; ++i) {
buffer.write(instr[i].iname, 22);
buffer.writeUint16BE(instr[i].length);
buffer.writeByte(instr[i].finetune);
buffer.writeByte(instr[i].volume);
buffer.writeUint16BE(instr[i].loopStart);
buffer.writeUint16BE(instr[i].loopLength);
}
buffer.writeByte((char)songLength);
buffer.writeByte(ciaaSpeed);
buffer.write(arrangement, 128);
buffer.write(mark, 4);
for (int p = 0 ; p < patternNumber ; ++p) {
for (int n = 0 ; n < 64 ; ++n) {
for (int k = 0 ; k < 4 ; ++k) {
// buffer.writeUint32BE(*((uint32*)(note[p][n]+k)));
buffer.writeSint32BE(note[p][n][k]);
}
}
}
uint nb;
char buf[4096];
while ((nb = msnFile.read(buf, 4096)) > 0)
buffer.write(buf, nb);
return new Common::MemoryReadStream(buffer.getData(), buffer.size(), DisposeAfterUse::YES);
}
bool SupernovaEngine::canLoadGameStateCurrently() {
return _allowLoadGame;
}
Common::Error SupernovaEngine::loadGameState(int slot) {
return (loadGame(slot) ? Common::kNoError : Common::kReadingFailed);
}
bool SupernovaEngine::canSaveGameStateCurrently() {
// Do not allow saving when either _allowSaveGame, _animationEnabled or _guiEnabled is false
return _allowSaveGame && _gm->_animationEnabled && _gm->_guiEnabled;
}
Common::Error SupernovaEngine::saveGameState(int slot, const Common::String &desc) {
return (saveGame(slot, desc) ? Common::kNoError : Common::kWritingFailed);
}
bool SupernovaEngine::loadGame(int slot) {
if (slot < 0)
return false;
Common::String filename = Common::String::format("msn_save.%03d", slot);
Common::InSaveFile *savefile = _saveFileMan->openForLoading(filename);
if (!savefile)
return false;
uint saveHeader = savefile->readUint32LE();
if (saveHeader != SAVEGAME_HEADER) {
warning("No header found in '%s'", filename.c_str());
delete savefile;
return false; //Common::kUnknownError
}
byte saveVersion = savefile->readByte();
// Save version 1 was used during development and is no longer supported
if (saveVersion > SAVEGAME_VERSION || saveVersion == 1) {
warning("Save game version %i not supported", saveVersion);
delete savefile;
return false; //Common::kUnknownError;
}
// Make sure no message is displayed as this would otherwise delay the
// switch to the new location until a mouse click.
removeMessage();
int descriptionSize = savefile->readSint16LE();
savefile->skip(descriptionSize);
savefile->skip(6);
setTotalPlayTime(savefile->readUint32LE() * 1000);
Graphics::skipThumbnail(*savefile);
_gm->deserialize(savefile, saveVersion);
if (saveVersion >= 5) {
_menuBrightness = savefile->readByte();
_brightness = savefile->readByte();
} else {
_menuBrightness = _brightness = 255;
}
delete savefile;
return true;
}
bool SupernovaEngine::saveGame(int slot, const Common::String &description) {
if (slot < 0)
return false;
Common::String filename = Common::String::format("msn_save.%03d", slot);
Common::OutSaveFile *savefile = _saveFileMan->openForSaving(filename);
if (!savefile)
return false;
savefile->writeUint32LE(SAVEGAME_HEADER);
savefile->writeByte(SAVEGAME_VERSION);
TimeDate currentDate;
_system->getTimeAndDate(currentDate);
uint32 saveDate = (currentDate.tm_mday & 0xFF) << 24 | ((currentDate.tm_mon + 1) & 0xFF) << 16 | ((currentDate.tm_year + 1900) & 0xFFFF);
uint16 saveTime = (currentDate.tm_hour & 0xFF) << 8 | ((currentDate.tm_min) & 0xFF);
savefile->writeSint16LE(description.size() + 1);
savefile->write(description.c_str(), description.size() + 1);
savefile->writeUint32LE(saveDate);
savefile->writeUint16LE(saveTime);
savefile->writeUint32LE(getTotalPlayTime() / 1000);
Graphics::saveThumbnail(*savefile);
_gm->serialize(savefile);
savefile->writeByte(_menuBrightness);
savefile->writeByte(_brightness);
savefile->finalize();
delete savefile;
return true;
}
void SupernovaEngine::errorTempSave(bool saving) {
GUIErrorMessage(saving
? "Failed to save temporary game state. Make sure your save game directory is set in ScummVM and that you can write to it."
: "Failed to load temporary game state.");
error("Unrecoverable error");
}
ScreenBufferStack::ScreenBufferStack()
: _last(_buffer) {
}
void ScreenBufferStack::push(int x, int y, int width, int height) {
if (_last == ARRAYEND(_buffer))
return;
Graphics::Surface* screenSurface = g_system->lockScreen();
if (x < 0) {
width += x;
x = 0;
}
if (x + width > screenSurface->w)
width = screenSurface->w - x;
if (y < 0) {
height += y;
y = 0;
}
if (y + height > screenSurface->h)
height = screenSurface->h - y;
_last->_pixels = new byte[width * height];
byte *pixels = _last->_pixels;
const byte *screen = static_cast<const byte *>(screenSurface->getBasePtr(x, y));
for (int i = 0; i < height; ++i) {
Common::copy(screen, screen + width, pixels);
screen += screenSurface->pitch;
pixels += width;
}
g_system->unlockScreen();
_last->_x = x;
_last->_y = y;
_last->_width = width;
_last->_height = height;
++_last;
}
void ScreenBufferStack::restore() {
if (_last == _buffer)
return;
--_last;
g_system->lockScreen()->copyRectToSurface(
_last->_pixels, _last->_width, _last->_x, _last->_y,
_last->_width, _last->_height);
g_system->unlockScreen();
delete[] _last->_pixels;
}
}
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