mirror of
https://github.com/libretro/scummvm.git
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ef671f20b1
This is according to wjp's suggestion - the pitch didn't make sense there
603 lines
17 KiB
C++
603 lines
17 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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/*
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* This code is based on original Hugo Trilogy source code
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*
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* Copyright (c) 1989-1995 David P. Gray
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*
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*/
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#include "common/debug.h"
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#include "common/system.h"
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#include "common/savefile.h"
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#include "common/textconsole.h"
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#include "common/config-manager.h"
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#include "graphics/surface.h"
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#include "graphics/decoders/pcx.h"
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#include "graphics/thumbnail.h"
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#include "gui/saveload.h"
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#include "hugo/hugo.h"
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#include "hugo/file.h"
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#include "hugo/schedule.h"
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#include "hugo/display.h"
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#include "hugo/util.h"
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#include "hugo/object.h"
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#include "hugo/text.h"
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#include "hugo/mouse.h"
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namespace Hugo {
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namespace {
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static const char s_bootCypher[] = "Copyright 1992, David P Gray, Gray Design Associates";
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static const int s_bootCypherLen = sizeof(s_bootCypher) - 1;
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}
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FileManager::FileManager(HugoEngine *vm) : _vm(vm) {
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_hasReadHeader = false;
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_firstUIFFl = true;
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}
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FileManager::~FileManager() {
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}
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/**
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* Name scenery and objects picture databases
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*/
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const char *FileManager::getBootFilename() const {
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return "HUGO.BSF";
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}
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const char *FileManager::getObjectFilename() const {
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return "objects.dat";
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}
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const char *FileManager::getSceneryFilename() const {
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return "scenery.dat";
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}
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const char *FileManager::getSoundFilename() const {
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return "sounds.dat";
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}
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const char *FileManager::getStringFilename() const {
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return "strings.dat";
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}
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const char *FileManager::getUifFilename() const {
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return "uif.dat";
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}
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/**
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* Read a pcx file of length len. Use supplied seqPtr and image_p or
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* allocate space if NULL. Name used for errors. Returns address of seqPtr
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* Set first TRUE to initialize b_index (i.e. not reading a sequential image in file).
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*/
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Seq *FileManager::readPCX(Common::SeekableReadStream &f, Seq *seqPtr, byte *imagePtr, const bool firstFl, const char *name) {
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debugC(1, kDebugFile, "readPCX(..., %s)", name);
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// Allocate memory for Seq if 0
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if (seqPtr == 0) {
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if ((seqPtr = (Seq *)malloc(sizeof(Seq))) == 0)
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error("Insufficient memory to run game.");
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}
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Graphics::PCXDecoder pcx;
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if (!pcx.loadStream(f))
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error("Error while reading PCX image");
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const Graphics::Surface *pcxSurface = pcx.getSurface();
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if (pcxSurface->format.bytesPerPixel != 1)
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error("Invalid bytes per pixel in PCX surface (%d)", pcxSurface->format.bytesPerPixel);
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// Find size of image data in 8-bit DIB format
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// Note save of x2 - marks end of valid data before garbage
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seqPtr->_lines = pcxSurface->h;
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seqPtr->_x2 = seqPtr->_bytesPerLine8 = pcxSurface->w;
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// Size of the image
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uint16 size = pcxSurface->w * pcxSurface->h;
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// Allocate memory for image data if NULL
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if (imagePtr == 0)
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imagePtr = (byte *)malloc((size_t) size);
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assert(imagePtr);
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seqPtr->_imagePtr = imagePtr;
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for (uint16 y = 0; y < pcxSurface->h; y++)
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memcpy(imagePtr + y * pcxSurface->w, pcxSurface->getBasePtr(0, y), pcxSurface->w);
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return seqPtr;
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}
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/**
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* Read object file of PCC images into object supplied
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*/
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void FileManager::readImage(const int objNum, Object *objPtr) {
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debugC(1, kDebugFile, "readImage(%d, Object *objPtr)", objNum);
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/**
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* Structure of object file lookup entry
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*/
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struct objBlock_t {
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uint32 objOffset;
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uint32 objLength;
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};
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if (!objPtr->_seqNumb) // This object has no images
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return;
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if (_vm->isPacked()) {
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_objectsArchive.seek((uint32)objNum * sizeof(objBlock_t), SEEK_SET);
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objBlock_t objBlock; // Info on file within database
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objBlock.objOffset = _objectsArchive.readUint32LE();
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objBlock.objLength = _objectsArchive.readUint32LE();
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_objectsArchive.seek(objBlock.objOffset, SEEK_SET);
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} else {
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Common::String buf;
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buf = _vm->_picDir + Common::String(_vm->_text->getNoun(objPtr->_nounIndex, 0)) + ".PIX";
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if (!_objectsArchive.open(buf)) {
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buf = Common::String(_vm->_text->getNoun(objPtr->_nounIndex, 0)) + ".PIX";
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if (!_objectsArchive.open(buf))
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error("File not found: %s", buf.c_str());
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}
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}
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bool firstImgFl = true; // Initializes pcx read function
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Seq *seqPtr = 0; // Ptr to sequence structure
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// Now read the images into an images list
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for (int j = 0; j < objPtr->_seqNumb; j++) { // for each sequence
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for (int k = 0; k < objPtr->_seqList[j]._imageNbr; k++) { // each image
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if (k == 0) { // First image
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// Read this image - allocate both seq and image memory
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seqPtr = readPCX(_objectsArchive, 0, 0, firstImgFl, _vm->_text->getNoun(objPtr->_nounIndex, 0));
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objPtr->_seqList[j]._seqPtr = seqPtr;
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firstImgFl = false;
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} else { // Subsequent image
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// Read this image - allocate both seq and image memory
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seqPtr->_nextSeqPtr = readPCX(_objectsArchive, 0, 0, firstImgFl, _vm->_text->getNoun(objPtr->_nounIndex, 0));
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seqPtr = seqPtr->_nextSeqPtr;
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}
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// Compute the bounding box - x1, x2, y1, y2
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// Note use of x2 - marks end of valid data in row
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uint16 x2 = seqPtr->_x2;
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seqPtr->_x1 = seqPtr->_x2;
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seqPtr->_x2 = 0;
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seqPtr->_y1 = seqPtr->_lines;
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seqPtr->_y2 = 0;
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ImagePtr dibPtr = seqPtr->_imagePtr;
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for (int y = 0; y < seqPtr->_lines; y++, dibPtr += seqPtr->_bytesPerLine8 - x2) {
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for (int x = 0; x < x2; x++) {
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if (*dibPtr++) { // Some data found
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if (x < seqPtr->_x1)
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seqPtr->_x1 = x;
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if (x > seqPtr->_x2)
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seqPtr->_x2 = x;
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if (y < seqPtr->_y1)
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seqPtr->_y1 = y;
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if (y > seqPtr->_y2)
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seqPtr->_y2 = y;
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}
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}
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}
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}
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assert(seqPtr);
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seqPtr->_nextSeqPtr = objPtr->_seqList[j]._seqPtr; // loop linked list to head
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}
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// Set the current image sequence to first or last
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switch (objPtr->_cycling) {
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case kCycleInvisible: // (May become visible later)
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case kCycleAlmostInvisible:
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case kCycleNotCycling:
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case kCycleForward:
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objPtr->_currImagePtr = objPtr->_seqList[0]._seqPtr;
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break;
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case kCycleBackward:
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objPtr->_currImagePtr = seqPtr;
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break;
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default:
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warning("Unexpected cycling: %d", objPtr->_cycling);
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}
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if (!_vm->isPacked())
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_objectsArchive.close();
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}
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/**
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* Read sound (or music) file data. Call with SILENCE to free-up
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* any allocated memory. Also returns size of data
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*/
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SoundPtr FileManager::getSound(const int16 sound, uint16 *size) {
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debugC(1, kDebugFile, "getSound(%d)", sound);
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// No more to do if SILENCE (called for cleanup purposes)
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if (sound == _vm->_soundSilence)
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return 0;
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// Open sounds file
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Common::File fp; // Handle to SOUND_FILE
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if (!fp.open(getSoundFilename())) {
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warning("Hugo Error: File not found %s", getSoundFilename());
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return 0;
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}
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if (!_hasReadHeader) {
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for (int i = 0; i < kMaxSounds; i++) {
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_soundHdr[i]._size = fp.readUint16LE();
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_soundHdr[i]._offset = fp.readUint32LE();
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}
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if (fp.err())
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error("Wrong sound file format");
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_hasReadHeader = true;
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}
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*size = _soundHdr[sound]._size;
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if (*size == 0)
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error("Wrong sound file format or missing sound %d", sound);
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// Allocate memory for sound or music, if possible
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SoundPtr soundPtr = (byte *)malloc(_soundHdr[sound]._size); // Ptr to sound data
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assert(soundPtr);
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// Seek to data and read it
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fp.seek(_soundHdr[sound]._offset, SEEK_SET);
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if (fp.read(soundPtr, _soundHdr[sound]._size) != _soundHdr[sound]._size)
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error("Wrong sound file format");
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fp.close();
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return soundPtr;
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}
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/**
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* Save game to supplied slot
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*/
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bool FileManager::saveGame(const int16 slot, const Common::String &descrip) {
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debugC(1, kDebugFile, "saveGame(%d, %s)", slot, descrip.c_str());
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int16 savegameId;
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Common::String savegameDescription;
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if (slot == -1) {
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GUI::SaveLoadChooser *dialog = new GUI::SaveLoadChooser("Save game:", "Save", true);
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savegameId = dialog->runModalWithCurrentTarget();
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savegameDescription = dialog->getResultString();
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delete dialog;
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} else {
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savegameId = slot;
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if (!descrip.empty()) {
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savegameDescription = descrip;
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} else {
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savegameDescription = Common::String::format("Quick save #%d", slot);
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}
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}
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if (savegameId < 0) // dialog aborted
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return false;
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Common::String savegameFile = _vm->getSavegameFilename(savegameId);
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Common::SaveFileManager *saveMan = g_system->getSavefileManager();
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Common::OutSaveFile *out = saveMan->openForSaving(savegameFile);
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if (!out) {
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warning("Can't create file '%s', game not saved", savegameFile.c_str());
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return false;
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}
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// Write version. We can't restore from obsolete versions
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out->writeByte(kSavegameVersion);
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if (savegameDescription == "") {
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savegameDescription = "Untitled savegame";
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}
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out->writeSint16BE(savegameDescription.size() + 1);
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out->write(savegameDescription.c_str(), savegameDescription.size() + 1);
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Graphics::saveThumbnail(*out);
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TimeDate curTime;
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_vm->_system->getTimeAndDate(curTime);
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uint32 saveDate = (curTime.tm_mday & 0xFF) << 24 | ((curTime.tm_mon + 1) & 0xFF) << 16 | ((curTime.tm_year + 1900) & 0xFFFF);
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uint16 saveTime = (curTime.tm_hour & 0xFF) << 8 | ((curTime.tm_min) & 0xFF);
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out->writeUint32BE(saveDate);
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out->writeUint16BE(saveTime);
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_vm->_object->saveObjects(out);
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const Status &gameStatus = _vm->getGameStatus();
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// Save whether hero image is swapped
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out->writeByte(_vm->_heroImage);
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// Save score
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out->writeSint16BE(_vm->getScore());
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// Save story mode
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out->writeByte((gameStatus._storyModeFl) ? 1 : 0);
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// Save jumpexit mode
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out->writeByte((_vm->_mouse->getJumpExitFl()) ? 1 : 0);
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// Save gameover status
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out->writeByte((gameStatus._gameOverFl) ? 1 : 0);
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// Save screen states
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for (int i = 0; i < _vm->_numStates; i++)
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out->writeByte(_vm->_screenStates[i]);
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_vm->_scheduler->saveSchedulerData(out);
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// Save palette table
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_vm->_screen->savePal(out);
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// Save maze status
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out->writeByte((_vm->_maze._enabledFl) ? 1 : 0);
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out->writeByte(_vm->_maze._size);
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out->writeSint16BE(_vm->_maze._x1);
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out->writeSint16BE(_vm->_maze._y1);
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out->writeSint16BE(_vm->_maze._x2);
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out->writeSint16BE(_vm->_maze._y2);
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out->writeSint16BE(_vm->_maze._x3);
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out->writeSint16BE(_vm->_maze._x4);
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out->writeByte(_vm->_maze._firstScreenIndex);
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out->writeByte((byte)_vm->getGameStatus()._viewState);
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out->finalize();
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delete out;
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return true;
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}
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/**
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* Restore game from supplied slot number
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*/
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bool FileManager::restoreGame(const int16 slot) {
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debugC(1, kDebugFile, "restoreGame(%d)", slot);
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int16 savegameId;
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if (slot == -1) {
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GUI::SaveLoadChooser *dialog = new GUI::SaveLoadChooser("Restore game:", "Restore", false);
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savegameId = dialog->runModalWithCurrentTarget();
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delete dialog;
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} else {
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savegameId = slot;
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}
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if (savegameId < 0) // dialog aborted
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return false;
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Common::String savegameFile = _vm->getSavegameFilename(savegameId);
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Common::SaveFileManager *saveMan = g_system->getSavefileManager();
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Common::InSaveFile *in = saveMan->openForLoading(savegameFile);
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if (!in)
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return false;
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// Initialize new-game status
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_vm->initStatus();
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// Check version, can't restore from different versions
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int saveVersion = in->readByte();
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if (saveVersion != kSavegameVersion) {
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warning("Savegame of incompatible version");
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delete in;
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return false;
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}
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// Skip over description
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int32 saveGameNameSize = in->readSint16BE();
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in->skip(saveGameNameSize);
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Graphics::skipThumbnail(*in);
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in->skip(6); // Skip date & time
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// If hero image is currently swapped, swap it back before restore
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if (_vm->_heroImage != kHeroIndex)
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_vm->_object->swapImages(kHeroIndex, _vm->_heroImage);
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_vm->_object->restoreObjects(in);
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_vm->_heroImage = in->readByte();
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// If hero swapped in saved game, swap it
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byte heroImg = _vm->_heroImage;
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if (heroImg != kHeroIndex)
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_vm->_object->swapImages(kHeroIndex, _vm->_heroImage);
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_vm->_heroImage = heroImg;
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Status &gameStatus = _vm->getGameStatus();
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int score = in->readSint16BE();
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_vm->setScore(score);
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gameStatus._storyModeFl = (in->readByte() == 1);
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_vm->_mouse->setJumpExitFl(in->readByte() == 1);
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gameStatus._gameOverFl = (in->readByte() == 1);
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for (int i = 0; i < _vm->_numStates; i++)
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_vm->_screenStates[i] = in->readByte();
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_vm->_scheduler->restoreSchedulerData(in);
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// Restore palette and change it if necessary
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_vm->_screen->restorePal(in);
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// Restore maze status
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_vm->_maze._enabledFl = (in->readByte() == 1);
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_vm->_maze._size = in->readByte();
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_vm->_maze._x1 = in->readSint16BE();
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_vm->_maze._y1 = in->readSint16BE();
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_vm->_maze._x2 = in->readSint16BE();
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_vm->_maze._y2 = in->readSint16BE();
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_vm->_maze._x3 = in->readSint16BE();
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_vm->_maze._x4 = in->readSint16BE();
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_vm->_maze._firstScreenIndex = in->readByte();
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_vm->_scheduler->restoreScreen(*_vm->_screenPtr);
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if ((_vm->getGameStatus()._viewState = (Vstate) in->readByte()) != kViewPlay)
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_vm->_screen->hideCursor();
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delete in;
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return true;
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}
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/**
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* Reads boot file for program environment. Fatal error if not there or
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* file checksum is bad. De-crypts structure while checking checksum
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*/
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void FileManager::readBootFile() {
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debugC(1, kDebugFile, "readBootFile()");
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Common::File ofp;
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if (!ofp.open(getBootFilename())) {
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if (_vm->_gameVariant == kGameVariantH1Dos) {
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//TODO initialize properly _boot structure
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warning("readBootFile - Skipping as H1 Dos may be a freeware");
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memset(_vm->_boot._distrib, '\0', sizeof(_vm->_boot._distrib));
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_vm->_boot._registered = kRegFreeware;
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return;
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} else if (_vm->getPlatform() == Common::kPlatformPC) {
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warning("readBootFile - Skipping as H2 and H3 Dos may be shareware");
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memset(_vm->_boot._distrib, '\0', sizeof(_vm->_boot._distrib));
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_vm->_boot._registered = kRegShareware;
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return;
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} else {
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Utils::notifyBox(Common::String::format("Missing startup file '%s'", getBootFilename()));
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_vm->getGameStatus()._doQuitFl = true;
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return;
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}
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}
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if (ofp.size() < (int32)sizeof(_vm->_boot)) {
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Utils::notifyBox(Common::String::format("Corrupted startup file '%s'", getBootFilename()));
|
|
_vm->getGameStatus()._doQuitFl = true;
|
|
return;
|
|
}
|
|
|
|
_vm->_boot._checksum = ofp.readByte();
|
|
_vm->_boot._registered = ofp.readByte();
|
|
ofp.read(_vm->_boot._pbswitch, sizeof(_vm->_boot._pbswitch));
|
|
ofp.read(_vm->_boot._distrib, sizeof(_vm->_boot._distrib));
|
|
_vm->_boot._exitLen = ofp.readUint16LE();
|
|
|
|
byte *p = (byte *)&_vm->_boot;
|
|
|
|
byte checksum = 0;
|
|
for (uint32 i = 0; i < sizeof(_vm->_boot); i++) {
|
|
checksum ^= p[i];
|
|
p[i] ^= s_bootCypher[i % s_bootCypherLen];
|
|
}
|
|
ofp.close();
|
|
|
|
if (checksum) {
|
|
Utils::notifyBox(Common::String::format("Corrupted startup file '%s'", getBootFilename()));
|
|
_vm->getGameStatus()._doQuitFl = true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns address of uif_hdr[id], reading it in if first call
|
|
* This file contains, between others, the bitmaps of the fonts used in the application
|
|
* UIF means User interface database (Windows Only)
|
|
*/
|
|
UifHdr *FileManager::getUIFHeader(const Uif id) {
|
|
debugC(1, kDebugFile, "getUIFHeader(%d)", id);
|
|
|
|
// Initialize offset lookup if not read yet
|
|
if (_firstUIFFl) {
|
|
_firstUIFFl = false;
|
|
// Open unbuffered to do far read
|
|
Common::File ip; // Image data file
|
|
if (!ip.open(getUifFilename()))
|
|
error("File not found: %s", getUifFilename());
|
|
|
|
if (ip.size() < (int32)sizeof(_UIFHeader))
|
|
error("Wrong UIF file format");
|
|
|
|
for (int i = 0; i < kMaxUifs; ++i) {
|
|
_UIFHeader[i]._size = ip.readUint16LE();
|
|
_UIFHeader[i]._offset = ip.readUint32LE();
|
|
}
|
|
|
|
ip.close();
|
|
}
|
|
return &_UIFHeader[id];
|
|
}
|
|
|
|
/**
|
|
* Read uif item into supplied buffer.
|
|
*/
|
|
void FileManager::readUIFItem(const int16 id, byte *buf) {
|
|
debugC(1, kDebugFile, "readUIFItem(%d, ...)", id);
|
|
|
|
// Open uif file to read data
|
|
Common::File ip; // UIF_FILE handle
|
|
if (!ip.open(getUifFilename()))
|
|
error("File not found: %s", getUifFilename());
|
|
|
|
// Seek to data
|
|
UifHdr *_UIFHeaderPtr = getUIFHeader((Uif)id);
|
|
ip.seek(_UIFHeaderPtr->_offset, SEEK_SET);
|
|
|
|
// We support pcx images and straight data
|
|
Seq *dummySeq; // Dummy Seq for image data
|
|
switch (id) {
|
|
case UIF_IMAGES: // Read uif images file
|
|
dummySeq = readPCX(ip, 0, buf, true, getUifFilename());
|
|
free(dummySeq);
|
|
break;
|
|
default: // Read file data into supplied array
|
|
if (ip.read(buf, _UIFHeaderPtr->_size) != _UIFHeaderPtr->_size)
|
|
error("Wrong UIF file format");
|
|
break;
|
|
}
|
|
|
|
ip.close();
|
|
}
|
|
|
|
/**
|
|
* Read the uif image file (inventory icons)
|
|
*/
|
|
void FileManager::readUIFImages() {
|
|
debugC(1, kDebugFile, "readUIFImages()");
|
|
|
|
readUIFItem(UIF_IMAGES, _vm->_screen->getGUIBuffer()); // Read all uif images
|
|
}
|
|
|
|
} // End of namespace Hugo
|