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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.
*
* $URL$
* $Id$
*
*/
/*
* This code is based on original Hugo Trilogy source code
*
* Copyright (c) 1989-1995 David P. Gray
*
*/
#include "common/system.h"
#include "common/file.h"
#include "common/savefile.h"
#include "hugo/game.h"
#include "hugo/hugo.h"
#include "hugo/file.h"
#include "hugo/global.h"
#include "hugo/schedule.h"
#include "hugo/display.h"
#include "hugo/util.h"
namespace Hugo {
FileManager::FileManager(HugoEngine &vm) : _vm(vm) {
}
byte *FileManager::convertPCC(byte *p, uint16 y, uint16 bpl, image_pt dataPtr) {
// Convert 4 planes (RGBI) data to 8-bit DIB format
// Return original plane data ptr
uint16 r, g, b, i; // Byte index within each plane
int8 bit; // Bit index within a byte
debugC(2, kDebugFile, "convertPCC(byte *p, %d, %d, image_pt data_p)", y, bpl);
dataPtr += y * bpl * 8; // Point to correct DIB line
for (r = 0, g = bpl, b = g + bpl, i = b + bpl; r < bpl; r++, g++, b++, i++) // Each byte in all planes
for (bit = 7; bit >= 0; bit--) // Each bit in byte
*dataPtr++ = (((p[r] >> bit & 1) << 0) |
((p[g] >> bit & 1) << 1) |
((p[b] >> bit & 1) << 2) |
((p[i] >> bit & 1) << 3));
return p;
}
seq_t *FileManager::readPCX(Common::File &f, seq_t *seqPtr, byte *imagePtr, bool firstFl, const char *name) {
// Read a pcx file of length len. Use supplied seq_p and image_p or
// allocate space if NULL. Name used for errors. Returns address of seq_p
// Set first TRUE to initialize b_index (i.e. not reading a sequential image in file).
struct { // Structure of PCX file header
byte mfctr, vers, enc, bpx;
uint16 x1, y1, x2, y2; // bounding box
uint16 xres, yres;
byte palette[48]; // EGA color palette
byte vmode, planes;
uint16 bytesPerLine; // Bytes per line
byte fill2[60];
} PCC_header; // Header of a PCC file
byte c, d; // code and data bytes from PCX file
byte pline[XPIX]; // Hold 4 planes of data
byte *p = pline; // Ptr to above
byte i; // PCX repeat count
uint16 bytesPerLine4; // BPL in 4-bit format
uint16 size; // Size of image
uint16 y = 0; // Current line index
debugC(1, kDebugFile, "readPCX(..., %s)", name);
// Read in the PCC header and check consistency
PCC_header.mfctr = f.readByte();
PCC_header.vers = f.readByte();
PCC_header.enc = f.readByte();
PCC_header.bpx = f.readByte();
PCC_header.x1 = f.readUint16LE();
PCC_header.y1 = f.readUint16LE();
PCC_header.x2 = f.readUint16LE();
PCC_header.y2 = f.readUint16LE();
PCC_header.xres = f.readUint16LE();
PCC_header.yres = f.readUint16LE();
f.read(PCC_header.palette, sizeof(PCC_header.palette));
PCC_header.vmode = f.readByte();
PCC_header.planes = f.readByte();
PCC_header.bytesPerLine = f.readUint16LE();
f.read(PCC_header.fill2, sizeof(PCC_header.fill2));
if (PCC_header.mfctr != 10)
Utils::Error(PCCH_ERR, "%s", name);
// Allocate memory for seq_t if NULL
if (seqPtr == NULL)
if ((seqPtr = (seq_t *)malloc(sizeof(seq_t))) == NULL)
Utils::Error(HEAP_ERR, "%s", name);
// Find size of image data in 8-bit DIB format
// Note save of x2 - marks end of valid data before garbage
bytesPerLine4 = PCC_header.bytesPerLine * 4; // 4-bit bpl
seqPtr->bytesPerLine8 = bytesPerLine4 * 2; // 8-bit bpl
seqPtr->lines = PCC_header.y2 - PCC_header.y1 + 1;
seqPtr->x2 = PCC_header.x2 - PCC_header.x1 + 1;
size = seqPtr->lines * seqPtr->bytesPerLine8;
// Allocate memory for image data if NULL
if (imagePtr == NULL)
if ((imagePtr = (byte *)malloc((size_t) size)) == NULL)
Utils::Error(HEAP_ERR, "%s", name);
seqPtr->imagePtr = imagePtr;
// Process the image data, converting to 8-bit DIB format
while (y < seqPtr->lines) {
c = f.readByte();
if ((c & REP_MASK) == REP_MASK) {
d = f.readByte(); // Read data byte
for (i = 0; i < (c & LEN_MASK); i++) {
*p++ = d;
if ((uint16)(p - pline) == bytesPerLine4)
p = convertPCC(pline, y++, PCC_header.bytesPerLine, imagePtr);
}
} else {
*p++ = c;
if ((uint16)(p - pline) == bytesPerLine4)
p = convertPCC(pline, y++, PCC_header.bytesPerLine, imagePtr);
}
}
return seqPtr;
}
void FileManager::readImage(int objNum, object_t *objPtr) {
// Read object file of PCC images into object supplied
byte x, y, j, k;
uint16 x2; // Limit on x in image data
seq_t *seqPtr = 0; // Ptr to sequence structure
image_pt dibPtr; // Ptr to DIB data
objBlock_t objBlock; // Info on file within database
bool firstFl = true; // Initializes pcx read function
debugC(1, kDebugFile, "readImage(%d, object_t *objPtr)", objNum);
if (!objPtr->seqNumb) // This object has no images
return;
if (_vm.isPacked()) {
_objectsArchive.seek((uint32)objNum * sizeof(objBlock_t), SEEK_SET);
objBlock.objOffset = _objectsArchive.readUint32LE();
objBlock.objLength = _objectsArchive.readUint32LE();
_objectsArchive.seek(objBlock.objOffset, SEEK_SET);
} else {
char *buf = (char *) malloc(2048 + 1); // Buffer for file access
strcat(strcat(strcpy(buf, _vm._picDir), _vm._arrayNouns[objPtr->nounIndex][0]), OBJEXT);
if (!_objectsArchive.open(buf)) {
warning("File %s not found, trying again with %s%s", buf, _vm._arrayNouns[objPtr->nounIndex][0], OBJEXT);
strcat(strcpy(buf, _vm._arrayNouns[objPtr->nounIndex][0]), OBJEXT);
if (!_objectsArchive.open(buf))
Utils::Error(FILE_ERR, "%s", buf);
}
}
// Now read the images into an images list
for (j = 0; j < objPtr->seqNumb; j++) { // for each sequence
for (k = 0; k < objPtr->seqList[j].imageNbr; k++) { // each image
if (k == 0) { // First image
// Read this image - allocate both seq and image memory
seqPtr = readPCX(_objectsArchive, NULL, NULL, firstFl, _vm._arrayNouns[objPtr->nounIndex][0]);
objPtr->seqList[j].seqPtr = seqPtr;
firstFl = false;
} else { // Subsequent image
// Read this image - allocate both seq and image memory
seqPtr->nextSeqPtr = readPCX(_objectsArchive, NULL, NULL, firstFl, _vm._arrayNouns[objPtr->nounIndex][0]);
seqPtr = seqPtr->nextSeqPtr;
}
// Compute the bounding box - x1, x2, y1, y2
// Note use of x2 - marks end of valid data in row
x2 = seqPtr->x2;
seqPtr->x1 = seqPtr->x2;
seqPtr->x2 = 0;
seqPtr->y1 = seqPtr->lines;
seqPtr->y2 = 0;
dibPtr = seqPtr->imagePtr;
for (y = 0; y < seqPtr->lines; y++, dibPtr += seqPtr->bytesPerLine8 - x2)
for (x = 0; x < x2; x++)
if (*dibPtr++) { // Some data found
if (x < seqPtr->x1)
seqPtr->x1 = x;
if (x > seqPtr->x2)
seqPtr->x2 = x;
if (y < seqPtr->y1)
seqPtr->y1 = y;
if (y > seqPtr->y2)
seqPtr->y2 = y;
}
}
seqPtr->nextSeqPtr = objPtr->seqList[j].seqPtr; // loop linked list to head
}
// Set the current image sequence to first or last
switch (objPtr->cycling) {
case INVISIBLE: // (May become visible later)
case ALMOST_INVISIBLE:
case NOT_CYCLING:
case CYCLE_FORWARD:
objPtr->currImagePtr = objPtr->seqList[0].seqPtr;
break;
case CYCLE_BACKWARD:
objPtr->currImagePtr = seqPtr;
break;
}
if (!_vm.isPacked())
_objectsArchive.close();
}
void FileManager::readBackground(int screenIndex) {
// Read a PCX image into dib_a
seq_t seq; // Image sequence structure for Read_pcx
sceneBlock_t sceneBlock; // Read a database header entry
debugC(1, kDebugFile, "readBackground(%d)", screenIndex);
if (_vm.isPacked()) {
_sceneryArchive.seek((uint32) screenIndex * sizeof(sceneBlock_t), SEEK_SET);
sceneBlock.scene_off = _sceneryArchive.readUint32LE();
sceneBlock.scene_len = _sceneryArchive.readUint32LE();
sceneBlock.b_off = _sceneryArchive.readUint32LE();
sceneBlock.b_len = _sceneryArchive.readUint32LE();
sceneBlock.o_off = _sceneryArchive.readUint32LE();
sceneBlock.o_len = _sceneryArchive.readUint32LE();
sceneBlock.ob_off = _sceneryArchive.readUint32LE();
sceneBlock.ob_len = _sceneryArchive.readUint32LE();
_sceneryArchive.seek(sceneBlock.scene_off, SEEK_SET);
} else {
char *buf = (char *) malloc(2048 + 1); // Buffer for file access
strcat(strcat(strcpy(buf, _vm._picDir), _vm._screenNames[screenIndex]), BKGEXT);
if (!_sceneryArchive.open(buf)) {
warning("File %s not found, trying again with %s.ART", buf, _vm._screenNames[screenIndex]);
strcat(strcpy(buf, _vm._screenNames[screenIndex]), ".ART");
if (!_sceneryArchive.open(buf))
Utils::Error(FILE_ERR, "%s", buf);
}
}
// Read the image into dummy seq and static dib_a
readPCX(_sceneryArchive, &seq, _vm.screen().getFrontBuffer(), true, _vm._screenNames[screenIndex]);
if (!_vm.isPacked())
_sceneryArchive.close();
}
sound_pt FileManager::getSound(int16 sound, uint16 *size) {
// Read sound (or music) file data. Call with SILENCE to free-up
// any allocated memory. Also returns size of data
static sound_hdr_t s_hdr[MAX_SOUNDS]; // Sound lookup table
sound_pt soundPtr; // Ptr to sound data
Common::File fp; // Handle to SOUND_FILE
// bool music = sound < NUM_TUNES; // TRUE if music, else sound file
debugC(1, kDebugFile, "getSound(%d, %d)", sound, *size);
// No more to do if SILENCE (called for cleanup purposes)
if (sound == _vm._soundSilence)
return(NULL);
// Open sounds file
if (!fp.open(SOUND_FILE)) {
// Error(FILE_ERR, "%s", SOUND_FILE);
warning("Hugo Error: File not found %s", SOUND_FILE);
return(NULL);
}
// If this is the first call, read the lookup table
static bool has_read_header = false;
if (!has_read_header) {
if (fp.read(s_hdr, sizeof(s_hdr)) != sizeof(s_hdr))
Utils::Error(FILE_ERR, "%s", SOUND_FILE);
has_read_header = true;
}
*size = s_hdr[sound].size;
if (*size == 0)
Utils::Error(SOUND_ERR, "%s", SOUND_FILE);
// Allocate memory for sound or music, if possible
if ((soundPtr = (byte *)malloc(s_hdr[sound].size)) == 0) {
Utils::Warn(false, "%s", "Low on memory");
return(NULL);
}
// Seek to data and read it
fp.seek(s_hdr[sound].offset, SEEK_SET);
if (fp.read(soundPtr, s_hdr[sound].size) != s_hdr[sound].size)
Utils::Error(FILE_ERR, "%s", SOUND_FILE);
fp.close();
return soundPtr;
}
bool FileManager::fileExists(char *filename) {
// Return whether file exists or not
Common::File f;
if (f.open(filename)) {
f.close();
return true;
}
return false;
}
void FileManager::readOverlay(int screenNum, image_pt image, ovl_t overlayType) {
// Open and read in an overlay file, close file
uint32 i = 0;
int16 j, k;
int8 data; // Must be 8 bits signed
image_pt tmpImage = image; // temp ptr to overlay file
sceneBlock_t sceneBlock; // Database header entry
debugC(1, kDebugFile, "readOverlay(%d, ...)", screenNum);
if (_vm.isPacked()) {
_sceneryArchive.seek((uint32)screenNum * sizeof(sceneBlock_t), SEEK_SET);
sceneBlock.scene_off = _sceneryArchive.readUint32LE();
sceneBlock.scene_len = _sceneryArchive.readUint32LE();
sceneBlock.b_off = _sceneryArchive.readUint32LE();
sceneBlock.b_len = _sceneryArchive.readUint32LE();
sceneBlock.o_off = _sceneryArchive.readUint32LE();
sceneBlock.o_len = _sceneryArchive.readUint32LE();
sceneBlock.ob_off = _sceneryArchive.readUint32LE();
sceneBlock.ob_len = _sceneryArchive.readUint32LE();
switch (overlayType) {
case BOUNDARY:
_sceneryArchive.seek(sceneBlock.b_off, SEEK_SET);
i = sceneBlock.b_len;
break;
case OVERLAY:
_sceneryArchive.seek(sceneBlock.o_off, SEEK_SET);
i = sceneBlock.o_len;
break;
case OVLBASE:
_sceneryArchive.seek(sceneBlock.ob_off, SEEK_SET);
i = sceneBlock.ob_len;
break;
default:
Utils::Error(FILE_ERR, "%s", "Bad ovl_type");
break;
}
if (i == 0) {
for (i = 0; i < OVL_SIZE; i++)
image[i] = 0;
return;
}
} else {
const char *ovl_ext[] = {".b", ".o", ".ob"};
char *buf = (char *) malloc(2048 + 1); // Buffer for file access
strcat(strcpy(buf, _vm._screenNames[screenNum]), ovl_ext[overlayType]);
if (!fileExists(buf)) {
for (i = 0; i < OVL_SIZE; i++)
image[i] = 0;
return;
}
if (!_sceneryArchive.open(buf))
Utils::Error(FILE_ERR, "%s", buf);
// if (eof(f_scenery)) {
// _lclose(f_scenery);
// return;
// }
}
switch (_vm._gameVariant) {
case 0: // Hugo 1 DOS and WIN don't pack data
case 3:
_sceneryArchive.read(tmpImage, OVL_SIZE);
break;
default:
// Read in the overlay file using MAC Packbits. (We're not proud!)
k = 0; // byte count
do {
data = _sceneryArchive.readByte(); // Read a code byte
if ((byte)data == 0x80) // Noop
k = k;
else if (data >= 0) { // Copy next data+1 literally
for (i = 0; i <= (byte)data; i++, k++)
*tmpImage++ = _sceneryArchive.readByte();
} else { // Repeat next byte -data+1 times
j = _sceneryArchive.readByte();
for (i = 0; i < (byte)(-data + 1); i++, k++)
*tmpImage++ = j;
}
} while (k < OVL_SIZE);
break;
}
if (!_vm.isPacked())
_sceneryArchive.close();
}
void FileManager::saveSeq(object_t *obj) {
// Save sequence number and image number in given object
byte j, k;
seq_t *q;
bool found;
debugC(1, kDebugFile, "saveSeq");
for (j = 0, found = false; !found && (j < obj->seqNumb); j++) {
q = obj->seqList[j].seqPtr;
for (k = 0; !found && (k < obj->seqList[j].imageNbr); k++) {
if (obj->currImagePtr == q) {
found = true;
obj->curSeqNum = j;
obj->curImageNum = k;
} else
q = q->nextSeqPtr;
}
}
}
void FileManager::restoreSeq(object_t *obj) {
// Set up cur_seq_p from stored sequence and image number in object
int j;
seq_t *q;
debugC(1, kDebugFile, "restoreSeq");
q = obj->seqList[obj->curSeqNum].seqPtr;
for (j = 0; j < obj->curImageNum; j++)
q = q->nextSeqPtr;
obj->currImagePtr = q;
}
void FileManager::saveGame(int16 slot, const char *descrip) {
// Save game to supplied slot (-1 is INITFILE)
int i;
char path[256]; // Full path of saved game
debugC(1, kDebugFile, "saveGame(%d, %s)", slot, descrip);
// Get full path of saved game file - note test for INITFILE
if (slot == -1)
sprintf(path, "%s", _vm._initFilename);
else
sprintf(path, _vm._saveFilename, slot);
Common::WriteStream *out = 0;
if (!(out = _vm.getSaveFileManager()->openForSaving(path))) {
warning("Can't create file '%s', game not saved", path);
return;
}
// Write version. We can't restore from obsolete versions
out->write(&kSavegameVersion, sizeof(kSavegameVersion));
// Save description of saved game
out->write(descrip, DESCRIPLEN);
// Save objects
for (i = 0; i < _vm._numObj; i++) {
// Save where curr_seq_p is pointing to
saveSeq(&_vm._objects[i]);
out->write(&_vm._objects[i], sizeof(object_t));
}
const status_t &gameStatus = _vm.getGameStatus();
// Save whether hero image is swapped
out->write(&_vm._heroImage, sizeof(_vm._heroImage));
// Save score
int score = _vm.getScore();
out->write(&score, sizeof(score));
// Save story mode
out->write(&gameStatus.storyModeFl, sizeof(gameStatus.storyModeFl));
// Save jumpexit mode
out->write(&gameStatus.jumpExitFl, sizeof(gameStatus.jumpExitFl));
// Save gameover status
out->write(&gameStatus.gameOverFl, sizeof(gameStatus.gameOverFl));
// Save screen states
out->write(_vm._screenStates, sizeof(*_vm._screenStates) * _vm._numScreens);
// Save points table
out->write(_vm._points, sizeof(point_t) * _vm._numBonuses);
// Now save current time and all current events in event queue
_vm.scheduler().saveEvents(out);
// Save palette table
_vm.screen().savePal(out);
// Save maze status
out->write(&_maze, sizeof(maze_t));
out->finalize();
delete out;
}
void FileManager::restoreGame(int16 slot) {
// Restore game from supplied slot number (-1 is INITFILE)
int i;
char path[256]; // Full path of saved game
object_t *p;
seqList_t seqList[MAX_SEQUENCES];
// cmdList *cmds; // Save command list pointer
uint16 cmdIndex; // Save command list pointer
// char ver[sizeof(VER)]; // Compare versions
debugC(1, kDebugFile, "restoreGame(%d)", slot);
// Initialize new-game status
_vm.initStatus();
// Get full path of saved game file - note test for INITFILE
if (slot == -1)
sprintf(path, "%s", _vm._initFilename);
else
sprintf(path, _vm._saveFilename, slot);
Common::SeekableReadStream *in = 0;
if (!(in = _vm.getSaveFileManager()->openForLoading(path)))
return;
// Check version, can't restore from different versions
int saveVersion;
in->read(&saveVersion, sizeof(saveVersion));
if (saveVersion != kSavegameVersion) {
Utils::Error(GEN_ERR, "%s", "Savegame of incompatible version");
return;
}
// Skip over description
in->seek(DESCRIPLEN, SEEK_CUR);
// If hero image is currently swapped, swap it back before restore
if (_vm._heroImage != HERO)
_vm.scheduler().swapImages(HERO, _vm._heroImage);
// Restore objects, retain current seqList which points to dynamic mem
// Also, retain cmnd_t pointers
for (i = 0; i < _vm._numObj; i++) {
p = &_vm._objects[i];
memcpy(seqList, p->seqList, sizeof(seqList_t));
cmdIndex = p->cmdIndex;
in->read(p, sizeof(object_t));
p->cmdIndex = cmdIndex;
memcpy(p->seqList, seqList, sizeof(seqList_t));
}
in->read(&_vm._heroImage, sizeof(_vm._heroImage));
// If hero swapped in saved game, swap it
if ((i = _vm._heroImage) != HERO)
_vm.scheduler().swapImages(HERO, _vm._heroImage);
_vm._heroImage = i;
status_t &gameStatus = _vm.getGameStatus();
int score;
in->read(&score, sizeof(score));
_vm.setScore(score);
in->read(&gameStatus.storyModeFl, sizeof(gameStatus.storyModeFl));
in->read(&gameStatus.jumpExitFl, sizeof(gameStatus.jumpExitFl));
in->read(&gameStatus.gameOverFl, sizeof(gameStatus.gameOverFl));
in->read(_vm._screenStates, sizeof(*_vm._screenStates) * _vm._numScreens);
// Restore points table
in->read(_vm._points, sizeof(point_t) * _vm._numBonuses);
// Restore ptrs to currently loaded objects
for (i = 0; i < _vm._numObj; i++)
restoreSeq(&_vm._objects[i]);
// Now restore time of the save and the event queue
_vm.scheduler().restoreEvents(in);
// Restore palette and change it if necessary
_vm.screen().restorePal(in);
// Restore maze status
in->read(&_maze, sizeof(maze_t));
delete in;
}
void FileManager::initSavedGame() {
// Initialize the size of a saved game (from the fixed initial game).
// If status.initsave is TRUE, or the initial saved game is not found,
// force a save to create one. Normally the game will be shipped with
// the initial game file but useful to force a write during development
// when the size is changeable.
// The net result is a valid INITFILE, with status.savesize initialized.
Common::File f; // Handle of saved game file
char path[256]; // Full path of INITFILE
debugC(1, kDebugFile, "initSavedGame");
// Get full path of INITFILE
sprintf(path, "%s", _vm._initFilename);
// Force save of initial game
if (_vm.getGameStatus().initSaveFl)
saveGame(-1, "");
// If initial game doesn't exist, create it
Common::SeekableReadStream *in = 0;
if (!(in = _vm.getSaveFileManager()->openForLoading(path))) {
saveGame(-1, "");
if (!(in = _vm.getSaveFileManager()->openForLoading(path))) {
Utils::Error(WRITE_ERR, "%s", path);
return;
}
}
// Must have an open saved game now
_vm.getGameStatus().saveSize = in->size();
delete in;
// Check sanity - maybe disk full or path set to read-only drive?
if (_vm.getGameStatus().saveSize == -1)
Utils::Error(WRITE_ERR, "%s", path);
}
// Record and playback handling stuff:
typedef struct {
// int key; // Character
uint32 time; // Time at which character was pressed
} pbdata_t;
static pbdata_t pbdata;
FILE *fpb;
void FileManager::openPlaybackFile(bool playbackFl, bool recordFl) {
debugC(1, kDebugFile, "openPlaybackFile(%d, %d)", (playbackFl) ? 1 : 0, (recordFl) ? 1 : 0);
if (playbackFl) {
if (!(fpb = fopen(PBFILE, "r+b")))
Utils::Error(FILE_ERR, "%s", PBFILE);
} else if (recordFl)
fpb = fopen(PBFILE, "wb");
pbdata.time = 0; // Say no key available
}
void FileManager::closePlaybackFile() {
fclose(fpb);
}
void FileManager::openDatabaseFiles() {
//TODO : HUGO 1 DOS uses _stringtData instead of a strings.dat
//This should be tested adequately and should be handled by an error and not by a warning.
debugC(1, kDebugFile, "openDatabaseFiles");
if (!_stringArchive.open(STRING_FILE))
// Error(FILE_ERR, "%s", STRING_FILE);
warning("Hugo Error: File not found %s", STRING_FILE);
if (_vm.isPacked()) {
if (!_sceneryArchive.open(SCENERY_FILE))
Utils::Error(FILE_ERR, "%s", SCENERY_FILE);
if (!_objectsArchive.open(OBJECTS_FILE))
Utils::Error(FILE_ERR, "%s", OBJECTS_FILE);
}
}
void FileManager::closeDatabaseFiles() {
// TODO: stringArchive shouldn't be closed in Hugo 1 DOS
debugC(1, kDebugFile, "closeDatabaseFiles");
_stringArchive.close();
if (_vm.isPacked()) {
_sceneryArchive.close();
_objectsArchive.close();
}
}
char *FileManager::fetchString(int index) {
//TODO : HUGO 1 DOS uses _stringtData instead of a strings.dat
// Fetch string from file, decode and return ptr to string in memory
uint32 off1, off2;
debugC(1, kDebugFile, "fetchString(%d)", index);
// Get offset to string[index] (and next for length calculation)
_stringArchive.seek((uint32)index * sizeof(uint32), SEEK_SET);
if (_stringArchive.read((char *)&off1, sizeof(uint32)) == 0)
Utils::Error(FILE_ERR, "%s", "String offset");
if (_stringArchive.read((char *)&off2, sizeof(uint32)) == 0)
Utils::Error(FILE_ERR, "%s", "String offset");
// Check size of string
if ((off2 - off1) >= MAX_BOX)
Utils::Error(FILE_ERR, "%s", "Fetched string too long!");
// Position to string and read it into gen purpose _textBoxBuffer
_stringArchive.seek(off1, SEEK_SET);
if (_stringArchive.read(_textBoxBuffer, (uint16)(off2 - off1)) == 0)
Utils::Error(FILE_ERR, "%s", "Fetch_string");
// Null terminate, decode and return it
_textBoxBuffer[off2-off1] = '\0';
_vm.scheduler().decodeString(_textBoxBuffer);
return _textBoxBuffer;
}
void FileManager::printBootText() {
// Read the encrypted text from the boot file and print it
Common::File ofp;
int i;
char *buf;
debugC(1, kDebugFile, "printBootText");
if (!ofp.open(BOOTFILE)) {
if (_vm._gameVariant == 3) {
//TODO initialize properly _boot structure
warning("printBootText - Skipping as H1 Dos may be a freeware");
return;
} else
Utils::Error(FILE_ERR, "%s", BOOTFILE);
}
// Allocate space for the text and print it
buf = (char *)malloc(_boot.exit_len + 1);
if (buf) {
// Skip over the boot structure (already read) and read exit text
ofp.seek((long)sizeof(_boot), SEEK_SET);
if (ofp.read(buf, _boot.exit_len) != (size_t)_boot.exit_len)
Utils::Error(FILE_ERR, "%s", BOOTFILE);
// Decrypt the exit text, using CRYPT substring
for (i = 0; i < _boot.exit_len; i++)
buf[i] ^= CRYPT[i % strlen(CRYPT)];
buf[i] = '\0';
//Box(BOX_OK, "%s", buf_p);
//MessageBox(hwnd, buf_p, "License", MB_ICONINFORMATION);
warning("printBootText(): License: %s", buf);
}
free(buf);
ofp.close();
}
void FileManager::readBootFile() {
// Reads boot file for program environment. Fatal error if not there or
// file checksum is bad. De-crypts structure while checking checksum
byte checksum;
byte *p;
Common::File ofp;
uint32 i;
debugC(1, kDebugFile, "readBootFile");
if (!ofp.open(BOOTFILE)) {
if (_vm._gameVariant == 3) {
//TODO initialize properly _boot structure
warning("readBootFile - Skipping as H1 Dos may be a freeware");
return;
} else
Utils::Error(FILE_ERR, "%s", BOOTFILE);
}
if (ofp.size() < (int32)sizeof(_boot))
Utils::Error(FILE_ERR, "%s", BOOTFILE);
_boot.checksum = ofp.readByte();
_boot.registered = ofp.readByte();
ofp.read(_boot.pbswitch, sizeof(_boot.pbswitch));
ofp.read(_boot.distrib, sizeof(_boot.distrib));
_boot.exit_len = ofp.readUint16LE();
p = (byte *)&_boot;
for (i = 0, checksum = 0; i < sizeof(_boot); i++) {
checksum ^= p[i];
p[i] ^= CRYPT[i % strlen(CRYPT)];
}
ofp.close();
if (checksum)
Utils::Error(GEN_ERR, "%s", "Program startup file invalid");
}
uif_hdr_t *FileManager::getUIFHeader(uif_t id) {
// Returns address of uif_hdr[id], reading it in if first call
static uif_hdr_t UIFHeader[MAX_UIFS]; // Lookup for uif fonts/images
static bool firstFl = true;
Common::File ip; // Image data file
debugC(1, kDebugFile, "getUIFHeader(%d)", id);
// Initialize offset lookup if not read yet
if (firstFl) {
firstFl = false;
// Open unbuffered to do far read
if (!ip.open(UIF_FILE))
Utils::Error(FILE_ERR, "%s", UIF_FILE);
if (ip.size() < (int32)sizeof(UIFHeader))
Utils::Error(FILE_ERR, "%s", UIF_FILE);
for (int i = 0; i < MAX_UIFS; ++i) {
UIFHeader[i].size = ip.readUint16LE();
UIFHeader[i].offset = ip.readUint32LE();
}
ip.close();
}
return &UIFHeader[id];
}
void FileManager::readUIFItem(int16 id, byte *buf) {
// Read uif item into supplied buffer.
Common::File ip; // UIF_FILE handle
uif_hdr_t *UIFHeaderPtr; // Lookup table of items
seq_t seq; // Dummy seq_t for image data
debugC(1, kDebugFile, "readUIFItem(%d, ...)", id);
// Open uif file to read data
if (!ip.open(UIF_FILE))
Utils::Error(FILE_ERR, "%s", UIF_FILE);
// Seek to data
UIFHeaderPtr = getUIFHeader((uif_t)id);
ip.seek(UIFHeaderPtr->offset, SEEK_SET);
// We support pcx images and straight data
switch (id) {
case UIF_IMAGES: // Read uif images file
readPCX(ip, &seq, buf, true, UIF_FILE);
break;
default: // Read file data into supplied array
if (ip.read(buf, UIFHeaderPtr->size) != UIFHeaderPtr->size)
Utils::Error(FILE_ERR, "%s", UIF_FILE);
break;
}
ip.close();
}
void FileManager::instructions() {
// Simple instructions given when F1 pressed twice in a row
// Only in DOS versions
Common::File f;
char line[1024], *wrkLine;
char readBuf[2];
wrkLine = line;
if (!f.open(HELPFILE)) {
warning("help.dat not found");
return;
}
while (f.read(readBuf, 1)) {
wrkLine[0] = readBuf[0];
wrkLine++;
do {
f.read(wrkLine, 1);
} while (*wrkLine++ != EOP);
wrkLine[-2] = '\0'; /* Remove EOP and previous CR */
Utils::Box(BOX_ANY, "%s", line);
wrkLine = line;
f.read(readBuf, 2); /* Remove CRLF after EOP */
}
f.close();
}
} // End of namespace Hugo
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