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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 "hopkins/saveload.h"
#include "hopkins/files.h"
#include "hopkins/globals.h"
#include "hopkins/hopkins.h"
#include "common/system.h"
#include "common/savefile.h"
#include "graphics/surface.h"
#include "graphics/scaler.h"
#include "graphics/thumbnail.h"
namespace Hopkins {
const char *SAVEGAME_STR = "HOPKINS";
#define SAVEGAME_STR_SIZE 13
void SaveLoadManager::setParent(HopkinsEngine *vm) {
_vm = vm;
}
bool SaveLoadManager::save(const Common::String &file, const void *buf, size_t n) {
Common::OutSaveFile *f = g_system->getSavefileManager()->openForSaving(file);
if (f) {
size_t bytesWritten = f->write(buf, n);
f->finalize();
delete f;
return bytesWritten == n;
} else
return false;
}
// Save File
bool SaveLoadManager::saveFile(const Common::String &file, const void *buf, size_t n) {
return save(file, buf, n);
}
void SaveLoadManager::initSaves() {
Common::String dataFilename = "HISCORE.DAT";
byte data[100];
Common::fill(&data[0], &data[100], 0);
saveFile(dataFilename, data, 100);
}
void SaveLoadManager::load(const Common::String &file, byte *buf) {
Common::InSaveFile *f = g_system->getSavefileManager()->openForLoading(file);
if (f == NULL)
error("Error openinig file - %s", file.c_str());
int32 filesize = f->size();
f->read(buf, filesize);
delete f;
}
bool SaveLoadManager::readSavegameHeader(Common::InSaveFile *in, hopkinsSavegameHeader &header) {
char saveIdentBuffer[SAVEGAME_STR_SIZE + 1];
header._thumbnail = NULL;
// Validate the header Id
in->read(saveIdentBuffer, SAVEGAME_STR_SIZE + 1);
if (strncmp(saveIdentBuffer, SAVEGAME_STR, SAVEGAME_STR_SIZE))
return false;
header._version = in->readByte();
if (header._version > HOPKINS_SAVEGAME_VERSION)
return false;
// Read in the string
header._saveName.clear();
char ch;
while ((ch = (char)in->readByte()) != '\0') header._saveName += ch;
// Get the thumbnail
header._thumbnail = Graphics::loadThumbnail(*in);
if (!header._thumbnail)
return false;
// Read in save date/time
header._year = in->readSint16LE();
header._month = in->readSint16LE();
header._day = in->readSint16LE();
header._hour = in->readSint16LE();
header._minute = in->readSint16LE();
header._totalFrames = in->readUint32LE();
return true;
}
void SaveLoadManager::writeSavegameHeader(Common::OutSaveFile *out, hopkinsSavegameHeader &header) {
// Write out a savegame header
out->write(SAVEGAME_STR, SAVEGAME_STR_SIZE + 1);
out->writeByte(HOPKINS_SAVEGAME_VERSION);
// Write savegame name
out->write(header._saveName.c_str(), header._saveName.size() + 1);
// Create a thumbnail and save it
Graphics::Surface *thumb = new Graphics::Surface();
createThumbnail(thumb);
Graphics::saveThumbnail(*out, *thumb);
thumb->free();
delete thumb;
// Write out the save date/time
TimeDate td;
g_system->getTimeAndDate(td);
out->writeSint16LE(td.tm_year + 1900);
out->writeSint16LE(td.tm_mon + 1);
out->writeSint16LE(td.tm_mday);
out->writeSint16LE(td.tm_hour);
out->writeSint16LE(td.tm_min);
out->writeUint32LE(_vm->_eventsManager._gameCounter);
}
Common::Error SaveLoadManager::saveGame(int slot, const Common::String &saveName) {
/* Pack any necessary data into the savegame data structure */
// Set the selected slot number
_vm->_globals._saveData->_data[svUseless10] = slot;
// Set up the inventory
for (int i = 0; i < 35; ++i)
_vm->_globals._saveData->_inventory[i] = _vm->_globals._inventory[i];
_vm->_globals._saveData->_mapCarPosX = _vm->_objectsManager._mapCarPosX;
_vm->_globals._saveData->_mapCarPosY = _vm->_objectsManager._mapCarPosY;
/* Create the savegame */
Common::OutSaveFile *savefile = g_system->getSavefileManager()->openForSaving(_vm->generateSaveName(slot));
if (!savefile)
return Common::kCreatingFileFailed;
// Set up the serializer
Common::Serializer serializer(NULL, savefile);
// Write out the savegame header
hopkinsSavegameHeader header;
header._saveName = saveName;
header._version = HOPKINS_SAVEGAME_VERSION;
writeSavegameHeader(savefile, header);
// Write out the savegame data
syncSavegameData(serializer, header._version);
// Save file complete
savefile->finalize();
delete savefile;
return Common::kNoError;
}
Common::Error SaveLoadManager::loadGame(int slot) {
// Try and open the save file for reading
Common::InSaveFile *savefile = g_system->getSavefileManager()->openForLoading(
_vm->generateSaveName(slot));
if (!savefile)
return Common::kReadingFailed;
// Set up the serializer
Common::Serializer serializer(savefile, NULL);
// Read in the savegame header
hopkinsSavegameHeader header;
readSavegameHeader(savefile, header);
if (header._thumbnail)
header._thumbnail->free();
delete header._thumbnail;
// Read in the savegame data
syncSavegameData(serializer, header._version);
// Loading save file complete
delete savefile;
// Unpack the inventory
for (int i = 0; i < 35; ++i)
_vm->_globals._inventory[i] = _vm->_globals._saveData->_inventory[i];
// Set variables from loaded data as necessary
_vm->_globals._saveData->_data[svUseless10] = slot;
_vm->_globals._exitId = _vm->_globals._saveData->_data[svLastScreenId5];
_vm->_globals._saveData->_data[svLastScreenId6] = 0;
_vm->_globals._screenId = 0;
_vm->_objectsManager._mapCarPosX = _vm->_globals._saveData->_mapCarPosX;
_vm->_objectsManager._mapCarPosY = _vm->_globals._saveData->_mapCarPosY;
return Common::kNoError;
}
bool SaveLoadManager::readSavegameHeader(int slot, hopkinsSavegameHeader &header) {
// Try and open the save file for reading
Common::InSaveFile *saveFile = g_system->getSavefileManager()->openForLoading(
g_vm->generateSaveName(slot));
if (!saveFile)
return false;
bool result = readSavegameHeader(saveFile, header);
delete saveFile;
return result;
}
#define REDUCE_AMOUNT 80
void SaveLoadManager::createThumbnail(Graphics::Surface *s) {
int w = _vm->_graphicsManager.zoomOut(SCREEN_WIDTH, REDUCE_AMOUNT);
int h = _vm->_graphicsManager.zoomOut(SCREEN_HEIGHT - 40, REDUCE_AMOUNT);
Graphics::Surface thumb8;
thumb8.create(w, h, Graphics::PixelFormat::createFormatCLUT8());
_vm->_graphicsManager.reduceScreenPart(_vm->_graphicsManager._vesaBuffer, (byte *)thumb8.pixels,
_vm->_eventsManager._startPos.x, 20, SCREEN_WIDTH, SCREEN_HEIGHT - 40, 80);
// Convert the 8-bit pixel to 16 bit surface
s->create(w, h, Graphics::PixelFormat(2, 5, 6, 5, 0, 11, 5, 0, 0));
const byte *srcP = (const byte *)thumb8.pixels;
uint16 *destP = (uint16 *)s->pixels;
for (int yp = 0; yp < h; ++yp) {
// Copy over the line, using the source pixels as lookups into the pixels palette
const byte *lineSrcP = srcP;
uint16 *lineDestP = destP;
for (int xp = 0; xp < w; ++xp)
*lineDestP++ = *(uint16 *)&_vm->_graphicsManager.PAL_PIXELS[*lineSrcP++ * 2];
// Move to the start of the next line
srcP += w;
destP += w;
}
thumb8.free();
}
void SaveLoadManager::syncSavegameData(Common::Serializer &s, int version) {
s.syncBytes(&_vm->_globals._saveData->_data[0], 2050);
syncCharacterLocation(s, _vm->_globals._saveData->_cloneHopkins);
syncCharacterLocation(s, _vm->_globals._saveData->_realHopkins);
syncCharacterLocation(s, _vm->_globals._saveData->_samantha);
for (int i = 0; i < 35; ++i)
s.syncAsSint16LE(_vm->_globals._saveData->_inventory[i]);
if (version > 1) {
s.syncAsSint16LE(_vm->_globals._saveData->_mapCarPosX);
s.syncAsSint16LE(_vm->_globals._saveData->_mapCarPosY);
} else {
_vm->_globals._saveData->_mapCarPosX = _vm->_globals._saveData->_mapCarPosY = 0;
}
}
void SaveLoadManager::syncCharacterLocation(Common::Serializer &s, CharacterLocation &item) {
s.syncAsSint16LE(item._pos.x);
s.syncAsSint16LE(item._pos.y);
s.syncAsSint16LE(item._startSpriteIndex);
s.syncAsSint16LE(item._location);
s.syncAsSint16LE(item._zoomFactor);
}
void SaveLoadManager::convertThumb16To8(Graphics::Surface *thumb16, Graphics::Surface *thumb8) {
thumb8->create(thumb16->w, thumb16->h, Graphics::PixelFormat::createFormatCLUT8());
Graphics::PixelFormat pixelFormat16(2, 5, 6, 5, 0, 11, 5, 0, 0);
byte paletteR[PALETTE_SIZE];
byte paletteG[PALETTE_SIZE];
byte paletteB[PALETTE_SIZE];
for (int palIndex = 0; palIndex < PALETTE_SIZE; ++palIndex) {
uint16 p = READ_LE_UINT16(&_vm->_graphicsManager.PAL_PIXELS[palIndex * 2]);
pixelFormat16.colorToRGB(p, paletteR[palIndex], paletteG[palIndex], paletteB[palIndex]);
}
const uint16 *srcP = (const uint16 *)thumb16->pixels;
byte *destP = (byte *)thumb8->pixels;
for (int yp = 0; yp < thumb16->h; ++yp) {
const uint16 *lineSrcP = srcP;
byte *lineDestP = destP;
for (int xp = 0; xp < thumb16->w; ++xp) {
byte r, g, b;
pixelFormat16.colorToRGB(*lineSrcP++, r, g, b);
// Scan the palette for the closest match
int difference = 99999, foundIndex = 0;
for (int palIndex = 0; palIndex < PALETTE_SIZE; ++palIndex) {
byte rCurrent = paletteR[palIndex];
byte gCurrent = paletteG[palIndex];
byte bCurrent = paletteB[palIndex];
int diff = ABS((int)r - (int)rCurrent) + ABS((int)g - (int)gCurrent) + ABS((int)b - (int)bCurrent);
if (diff < difference) {
difference = diff;
foundIndex = palIndex;
}
}
*lineDestP++ = foundIndex;
}
// Move to the start of the next line
srcP += thumb16->w;
destP += thumb16->w;
}
}
} // End of namespace Hopkins
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