scummvm/engines/sci/engine/savegame.cfsml

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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.
*
* $URL$
* $Id$
*
*/
/* Savegame handling for EngineState structs. Makes heavy use of cfsml magic. */
/* DON'T EDIT savegame.cpp ! Only modify savegame.cfsml, if something needs
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** to be changed. Refer to freesci/docs/misc/cfsml.spec if you don't understand
** savegame.cfsml. If this doesn't solve your problem, contact the maintainer.
*/
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#include <time.h> // FIXME: For struct tm
#include "common/stream.h"
#include "common/system.h"
#include "sci/sci_memory.h"
#include "sci/gfx/operations.h"
#include "sci/gfx/menubar.h"
#include "sci/sfx/core.h"
#include "sci/sfx/iterator.h"
#include "sci/engine/state.h"
#include "sci/engine/intmap.h"
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#ifdef _WIN32
#pragma warning( disable : 4101 )
#endif
namespace Sci {
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#define HUNK_TYPE_GFX_SNAPSHOT_STRING "g\n"
/* Missing:
** - SFXdriver
** - File input/output state (this is likely not to happen)
*/
const unsigned int PRINTFBUFLEN = 128;
int WSprintf(Common::WriteStream* str, const char *format, ...) {
va_list args;
char buf[PRINTFBUFLEN]; // default buffer to prevent new in common case
char* writebuf = buf;
unsigned int s = PRINTFBUFLEN;
unsigned int outsize;
while (true) {
va_start(args, format);
outsize = vsnprintf(writebuf, s, format, args);
va_end(args);
if (outsize == s) {
if (s > 16384) { // there are limits...
delete[] writebuf;
warning("Saving failed: line much too long");
return 0;
}
s *= 2;
if (writebuf != buf) delete[] writebuf;
writebuf = new char[s];
} else {
break;
}
}
uint32 ret = str->write(writebuf, outsize);
if (writebuf != buf) delete[] writebuf;
return ret;
}
int SRSgetc(Common::SeekableReadStream* str) {
char c = str->readSByte();
if (str->err() || str->eos())
return EOF;
return c;
}
char* SRSgets(char* s, int size, Common::SeekableReadStream* str) {
return str->readLine_NEW(s, size);
}
static EngineState *_global_save_state;
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// Needed for some graphical stuff.
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#define FILE_VERSION _global_save_state->savegame_version
void write_reg_t(Common::WriteStream *fh, reg_t const *foo) {
WSprintf(fh, PREG, PRINT_REG(*foo));
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}
int read_reg_t(Common::SeekableReadStream *fh, reg_t *foo, const char *lastval, int *line, int *hiteof) {
unsigned int segment, offset;
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if (sscanf(lastval, PREG, &segment, &offset) < 2) {
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sciprintf("Error parsing reg_t on line %d\n", *line);
return 1;
}
*foo = make_reg(segment, offset);
return 0;
}
void write_sci_version(Common::WriteStream *fh, sci_version_t const *foo) {
WSprintf(fh, "%d.%03d.%03d", SCI_VERSION_MAJOR(*foo), SCI_VERSION_MINOR(*foo), SCI_VERSION_PATCHLEVEL(*foo));
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}
int read_sci_version(Common::SeekableReadStream *fh, sci_version_t *foo, const char *lastval, int *line, int *hiteof) {
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return version_parse(lastval, foo);
}
void write_PTN(Common::WriteStream *fh, parse_tree_node_t const *foo) {
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if (foo->type == PARSE_TREE_NODE_LEAF)
WSprintf(fh, "L%d", foo->content.value);
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else
WSprintf(fh, "B(%d,%d)", foo->content.branches[0], foo->content.branches[1]);
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}
int read_PTN(Common::SeekableReadStream *fh, parse_tree_node_t *foo, const char *lastval, int *line, int *hiteof) {
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if (lastval[0] == 'L') {
const char *c = lastval + 1;
char *strend;
while (*c && isspace(*c))
++c;
if (!*c)
return 1;
foo->content.value = strtol(c, &strend, 0);
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return (strend == c); // Error if nothing could be read
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return 0;
} else if (lastval[0] == 'B') {
const char *c = lastval + 1;
char *strend;
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while (*c && isspace(*c))
++c;
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if (*c++ != '(') return 1;
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while (*c && isspace(*c))
++c;
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foo->content.branches[0] = strtol(c, &strend, 0);
if (strend == c)
return 1;
c = strend;
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while (*c && isspace(*c))
++c;
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if (*c++ != ',')
return 1;
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while (*c && isspace(*c))
++c;
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foo->content.branches[1] = strtol(c, &strend, 0);
if (strend == c)
return 1;
c = strend;
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while (*c && isspace(*c))
++c;
if (*c++ != ')')
return 1;
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return 0;
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} else return 1; // failure to parse anything
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}
void write_CommonString(Common::WriteStream *fh, Common::String const *string);
int read_CommonString(Common::SeekableReadStream *fh, Common::String *string, const char *lastval, int *line, int *hiteof);
void write_menubar_tp(Common::WriteStream *fh, const menubar_t * const *foo);
int read_menubar_tp(Common::SeekableReadStream *fh, menubar_t **foo, const char *lastval, int *line, int *hiteof);
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void write_MemObjPtr(Common::WriteStream *fh, const MemObject * const *foo);
int read_MemObjPtr(Common::SeekableReadStream *fh, MemObject **foo, const char *lastval, int *line, int *hiteof);
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void write_songlib_t(Common::WriteStream *fh, songlib_t const *foo);
int read_songlib_t(Common::SeekableReadStream *fh, songlib_t *foo, const char *lastval, int *line, int *hiteof);
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int read_song_tp(Common::SeekableReadStream *fh, song_t **foo, const char *lastval, int *line, int *hiteof);
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void write_IntMapperPtr(Common::WriteStream *fh, const IntMapper * const *foo);
int read_IntMapperPtr(Common::SeekableReadStream *fh, IntMapper **foo, const char *lastval, int *line, int *hiteof);
void write_IntMapperNodePtr(Common::WriteStream *fh, const IntMapper::Node * const *foo);
int read_IntMapperNodePtr(Common::SeekableReadStream *fh, IntMapper::Node **foo, const char *lastval, int *line, int *hiteof);
void write_SegManagerPtr(Common::WriteStream *fh, const SegManager * const *foo);
int read_SegManagerPtr(Common::SeekableReadStream *fh, SegManager **foo, const char *lastval, int *line, int *hiteof);
typedef MemObject *mem_obj_ptr;
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// Unused types
/*
TYPE long "long" LIKE int;
TYPE int16 "int16" LIKE int;
RECORD synonym_t "synonym_t" {
int replaceant;
int replacement;
}
*/
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%CFSML
TYPE bool "bool" LIKE int;
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TYPE byte "byte" LIKE int;
TYPE Common::String ""Common::String" USING write_CommonString read_CommonString;
TYPE SegmentId "SegmentId" LIKE int;
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TYPE sci_version_t "sci_version_t" USING write_sci_version read_sci_version;
TYPE menubar_tp "menubar_t *" USING write_menubar_tp read_menubar_tp;
TYPE MemObject "MemObject" USING write_MemObject read_MemObject;
TYPE mem_obj_ptr "MemObject *" USING write_MemObjPtr read_MemObjPtr;
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TYPE reg_t "reg_t" USING write_reg_t read_reg_t;
TYPE size_t "size_t" LIKE int;
TYPE IntMapperPtr "IntMapper *" USING write_IntMapperPtr read_IntMapperPtr;
TYPE IntMapperNodePtr "IntMapper::Node *" USING write_IntMapperNodePtr read_IntMapperNodePtr;
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TYPE songlib_t "songlib_t" USING write_songlib_t read_songlib_t;
TYPE song_tp "song_t *" USING write_song_tp read_song_tp;
TYPE SongIterator "SongIterator" USING write_song_iterator_t read_song_iterator_t;
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TYPE song_handle_t "song_handle_t" LIKE int;
TYPE SegManagerPtr "SegManager *" USING write_SegManagerPtr read_SegManagerPtr;
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RECORD song_t "song_t" {
song_handle_t handle;
int resource_num;
int priority;
int status;
int restore_behavior;
int restore_time;
int loops;
int hold;
}
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RECORD IntMapper "IntMapper" {
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int base_value;
IntMapperNodePtr nodes[STATIC DCS_INT_HASH_MAX];
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}
RECORD menu_item_t "menu_item_t" {
int type;
string keytext;
int keytext_size;
int flags;
byte said[STATIC MENU_SAID_SPEC_SIZE];
reg_t said_pos;
string text;
reg_t text_pos;
int modifiers;
int key;
int enabled;
int tag;
}
RECORD menu_t "menu_t" {
string title;
int title_width;
int width;
menu_item_t items[DYNAMIC items_nr];
}
RECORD menubar_t "menubar_t" {
menu_t menus[DYNAMIC menus_nr];
}
RECORD SegManager "SegManager" {
IntMapperPtr id_seg_map;
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mem_obj_ptr heap[DYNAMIC heap_size];
int heap_size;
int reserved_id;
int exports_wide;
int gc_mark_bits;
size_t mem_allocated;
SegmentId Clones_seg_id;
SegmentId Lists_seg_id;
SegmentId Nodes_seg_id;
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}
RECORD Class "Class" {
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int script;
reg_t reg;
}
RECORD sfx_state_t "sfx_state_t" {
songlib_t songlib;
}
RECORD SavegameMetadata "SavegameMetadata" {
Common::String savegame_name;
int savegame_version;
Common::String game_version;
sci_version_t version;
int savegame_date;
int savegame_time;
}
RECORD EngineState "EngineState" {
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int savegame_version;
string game_version;
sci_version_t version;
menubar_tp menubar;
int status_bar_foreground;
int status_bar_background;
SegManagerPtr seg_manager;
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int classtable_size;
Class classtable[DYNAMIC classtable_size];
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sfx_state_t sound;
}
RECORD LocalVariables "LocalVariables" {
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int script_id;
int nr;
reg_t locals[DYNAMIC nr];
}
RECORD Object "Object" {
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int flags;
reg_t pos;
int variables_nr;
int variable_names_nr;
int methods_nr;
reg_t variables[DYNAMIC variables_nr];
}
RECORD Clone "Clone" {
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int flags;
reg_t pos;
int variables_nr;
int variable_names_nr;
int methods_nr;
reg_t variables[DYNAMIC variables_nr];
}
RECORD List "List" {
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reg_t first;
reg_t last;
}
RECORD Node "Node" {
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reg_t pred;
reg_t succ;
reg_t key;
reg_t value;
}
RECORD CloneEntry "CloneEntry" {
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int next_free;
Clone entry;
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}
RECORD CloneTable "CloneTable" {
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int entries_nr;
int first_free;
int entries_used;
int max_entry;
CloneEntry table[DYNAMIC entries_nr];
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}
RECORD ListEntry "ListEntry" {
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int next_free;
List entry;
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}
RECORD ListTable "ListTable" {
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int entries_nr;
int first_free;
int entries_used;
int max_entry;
ListEntry table[DYNAMIC entries_nr];
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}
RECORD NodeEntry "NodeEntry" {
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int next_free;
Node entry;
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}
RECORD NodeTable "NodeTable" {
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int entries_nr;
int first_free;
int entries_used;
int max_entry;
NodeEntry table[DYNAMIC entries_nr];
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}
RECORD Script "Script" {
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int nr;
size_t buf_size;
size_t script_size;
size_t heap_size;
IntMapperPtr obj_indices;
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int exports_nr;
int synonyms_nr;
int lockers;
int objects_allocated;
int objects_nr;
Object objects[DYNAMIC objects_allocated];
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int locals_offset;
int locals_segment;
int marked_as_deleted;
}
RECORD SystemString "SystemString" {
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string name;
int max_size;
string value;
}
RECORD SystemStrings "SystemStrings" {
SystemString strings[STATIC SYS_STRINGS_MAX];
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}
RECORD DynMem "DynMem" {
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int size;
string description;
byte buf[DYNAMIC size];
}
%END CFSML
void write_songlib_t(Common::WriteStream *fh, songlib_t const *songlib) {
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song_t *seeker = *(songlib->lib);
int songcount = song_lib_count(*songlib);
WSprintf(fh, "{\n");
WSprintf(fh, "songcount = %d\n", songcount);
WSprintf(fh, "list = \n");
WSprintf(fh, "[\n");
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while (seeker) {
seeker->restore_time = seeker->it->getTimepos();
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%CFSMLWRITE song_t seeker INTO fh;
seeker = seeker->next;
}
WSprintf(fh, "]\n");
WSprintf(fh, "}\n");
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}
int read_songlib_t(Common::SeekableReadStream *fh, songlib_t *songlib, const char *lastval, int *line, int *hiteof) {
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int songcount;
int i;
song_t *newsong;
if (strcmp(lastval, "{")) {
_cfsml_error("Opening brackets expected at line %d\n", *line);
return CFSML_FAILURE;
}
// FIXME: error checking
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Common::String l = fh->readLine();
sscanf(l.c_str(), "songcount = %d", &songcount);
l = fh->readLine(); // "list = "
l = fh->readLine(); // "["
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*line += 4;
song_lib_init(songlib);
for (i = 0; i < songcount; i++) {
%CFSMLREAD song_tp &newsong FROM fh ERRVAR *hiteof FIRSTTOKEN lastval LINECOUNTER *line;
song_lib_add(*songlib, newsong);
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}
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l = fh->readLine(); // "]"
l = fh->readLine(); // "}"
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*line += 2;
return 0;
}
void write_song_tp(Common::WriteStream *fh, const song_t * const *foo) {
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%CFSMLWRITE song_t *foo INTO fh;
}
SongIterator *build_iterator(EngineState *s, int song_nr, int type, songit_id_t id);
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int read_song_tp(Common::SeekableReadStream *fh, song_t **foo, const char *lastval, int *line, int *hiteof) {
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char *token;
int assignment;
*foo = (song_t*) malloc(sizeof(song_t));
token = _cfsml_get_identifier(fh, line, hiteof, &assignment);
%CFSMLREAD song_t (*foo) FROM fh ERRVAR *hiteof FIRSTTOKEN token LINECOUNTER *line;
(*foo)->delay = 0;
(*foo)->it = NULL;
(*foo)->next_playing = (*foo)->next_stopping = (*foo)->next = NULL;
return 0;
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}
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void write_IntMapperPtr(Common::WriteStream *fh, const IntMapper * const *foo) {
%CFSMLWRITE IntMapper *foo INTO fh;
}
int read_IntMapperPtr(Common::SeekableReadStream *fh, IntMapper **foo, const char *lastval, int *line, int *hiteof) {
*foo = new IntMapper();
%CFSMLREAD IntMapper (*foo) FROM fh ERRVAR *hiteof FIRSTTOKEN lastval LINECOUNTER *line;
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(*foo)->holes = NULL;
return 0;
}
void write_IntMapperNodePtr(Common::WriteStream *fh, const IntMapper::Node * const *foo) {
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if (!(*foo)) {
WSprintf(fh, "\\null");
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} else {
WSprintf(fh,"[\n%d=>%d\n", (*foo)->key, (*foo)->idx);
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if ((*foo)->next) {
%CFSMLWRITE IntMapperNodePtr &((*foo)->next) INTO fh;
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} else
WSprintf(fh, "L");
WSprintf(fh, "]");
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}
}
int read_IntMapperNodePtr(Common::SeekableReadStream *fh, IntMapper::Node **foo, const char *lastval, int *line, int *hiteof) {
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static char buffer[80];
if (lastval[0] == '\\') {
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*foo = NULL; // No hash map node
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} else {
*foo = (IntMapper::Node*)malloc(sizeof(IntMapper::Node));
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if (lastval[0] != '[') {
sciprintf("Expected opening bracket in hash_map_node_t on line %d\n", *line);
return 1;
}
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do {
(*line)++;
SRSgets(buffer, 80, fh);
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if (buffer[0] == 'L') {
(*foo)->next = NULL;
buffer[0] = buffer[1];
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} // HACK: deliberately no else clause here
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if (buffer[0] == ']') {
break;
} else if (buffer[0] == '[') {
if (read_IntMapperNodePtr(fh, &((*foo)->next), buffer, line, hiteof))
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return 1;
} else if (sscanf(buffer, "%d=>%d", &((*foo)->key), &((*foo)->idx))<2) {
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sciprintf("Error parsing hash_map_node_t on line %d\n", *line);
return 1;
}
} while (1);
}
return 0;
}
void write_menubar_tp(Common::WriteStream *fh, const menubar_t * const *foo) {
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if (*foo) {
%CFSMLWRITE menubar_t (*foo) INTO fh;
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} else { // Nothing to write
WSprintf(fh, "\\null\\");
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}
}
int read_menubar_tp(Common::SeekableReadStream *fh, menubar_t **foo, const char *lastval, int *line, int *hiteof) {
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if (lastval[0] == '\\') {
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*foo = NULL; // No menu bar
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} else {
*foo = (menubar_t *) sci_malloc(sizeof(menubar_t));
%CFSMLREAD menubar_t (*foo) FROM fh ERRVAR *hiteof FIRSTTOKEN lastval LINECOUNTER *line;
}
return *hiteof;
}
static struct {
int type;
const char *name;
} mem_obj_string_names[] = {
{MEM_OBJ_INVALID, "INVALID"},
{MEM_OBJ_SCRIPT, "SCRIPT"},
{MEM_OBJ_CLONES, "CLONES"},
{MEM_OBJ_LOCALS, "LOCALS"},
{MEM_OBJ_STACK, "STACK"},
{MEM_OBJ_SYS_STRINGS,"SYS_STRINGS"},
{MEM_OBJ_LISTS,"LISTS"},
{MEM_OBJ_NODES,"NODES"},
{MEM_OBJ_HUNK,"HUNK"},
{MEM_OBJ_DYNMEM,"DYNMEM"}};
int mem_obj_string_to_enum(const char *str) {
int i;
for (i = 0; i <= MEM_OBJ_MAX; i++) {
if (!scumm_stricmp(mem_obj_string_names[i].name, str))
return i;
}
return -1;
}
void write_MemObject(Common::WriteStream *fh, MemObject const *foo) {
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WSprintf(fh, "%s\n", mem_obj_string_names[foo->type].name);
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%CFSMLWRITE int &foo->segmgr_id INTO fh;
switch (foo->type) {
case MEM_OBJ_SCRIPT:
%CFSMLWRITE Script &foo->data.script INTO fh;
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break;
case MEM_OBJ_CLONES:
%CFSMLWRITE CloneTable &foo->data.clones INTO fh;
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break;
case MEM_OBJ_LOCALS:
%CFSMLWRITE LocalVariables &foo->data.locals INTO fh;
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break;
case MEM_OBJ_SYS_STRINGS:
%CFSMLWRITE SystemStrings &foo->data.sys_strings INTO fh;
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break;
case MEM_OBJ_STACK:
%CFSMLWRITE int &foo->data.stack.nr INTO fh;
break;
case MEM_OBJ_HUNK:
break;
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case MEM_OBJ_LISTS:
%CFSMLWRITE ListTable &foo->data.lists INTO fh;
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break;
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case MEM_OBJ_NODES:
%CFSMLWRITE NodeTable &foo->data.nodes INTO fh;
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break;
case MEM_OBJ_DYNMEM:
%CFSMLWRITE DynMem &foo->data.dynmem INTO fh;
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break;
default:
break;
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}
}
int read_MemObject(Common::SeekableReadStream *fh, MemObject *foo, const char *lastval, int *line, int *hiteof) {
foo->type = (memObjType)mem_obj_string_to_enum(lastval);
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if (foo->type < 0) {
sciprintf("Unknown MemObject type %s on line %d\n", lastval, *line);
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return 1;
}
%CFSMLREAD int &foo->segmgr_id FROM fh ERRVAR *hiteof LINECOUNTER *line;
switch (foo->type) {
case MEM_OBJ_SCRIPT:
%CFSMLREAD Script &foo->data.script FROM fh ERRVAR *hiteof LINECOUNTER *line;
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break;
case MEM_OBJ_CLONES:
%CFSMLREAD CloneTable &foo->data.clones FROM fh ERRVAR *hiteof LINECOUNTER *line;
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break;
case MEM_OBJ_LOCALS:
%CFSMLREAD LocalVariables &foo->data.locals FROM fh ERRVAR *hiteof LINECOUNTER *line;
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break;
case MEM_OBJ_SYS_STRINGS:
%CFSMLREAD SystemStrings &foo->data.sys_strings FROM fh ERRVAR *hiteof LINECOUNTER *line;
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break;
case MEM_OBJ_LISTS:
%CFSMLREAD ListTable &foo->data.lists FROM fh ERRVAR *hiteof LINECOUNTER *line;
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break;
case MEM_OBJ_NODES:
%CFSMLREAD NodeTable &foo->data.nodes FROM fh ERRVAR *hiteof LINECOUNTER *line;
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break;
case MEM_OBJ_STACK:
%CFSMLREAD int &foo->data.stack.nr FROM fh ERRVAR *hiteof LINECOUNTER *line;
foo->data.stack.entries = (reg_t *)sci_calloc(foo->data.stack.nr, sizeof(reg_t));
break;
case MEM_OBJ_HUNK:
init_Hunk_table(&foo->data.hunks);
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break;
case MEM_OBJ_DYNMEM:
%CFSMLREAD DynMem &foo->data.dynmem FROM fh ERRVAR *hiteof LINECOUNTER *line;
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break;
default:
break;
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}
return *hiteof;
}
void write_MemObjPtr(Common::WriteStream *fh, const MemObject * const *foo) {
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if (*foo) {
%CFSMLWRITE MemObject (*foo) INTO fh;
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} else { // Nothing to write
WSprintf(fh, "\\null\\");
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}
}
int read_MemObjPtr(Common::SeekableReadStream *fh, MemObject **foo, const char *lastval, int *line, int *hiteof) {
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if (lastval[0] == '\\') {
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*foo = NULL; // No menu bar
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} else {
*foo = (MemObject *)sci_malloc(sizeof(MemObject));
%CFSMLREAD MemObject (*foo) FROM fh ERRVAR *hiteof FIRSTTOKEN lastval LINECOUNTER *line;
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return *hiteof;
}
return 0;
}
void write_CommonString(Common::WriteStream *fh, Common::String const *string)
{
const char *t = string->c_str();
%CFSMLWRITE string (&t) INTO fh;
}
int read_CommonString(Common::SeekableReadStream *fh, Common::String *string, const char *lastval, int *line, int *hiteof)
{
char *t;
// Do an atomic read to prevent t from being freed if we hit an eof later
%CFSMLREAD-ATOMIC string (&t) FROM fh ERRVAR *hiteof FIRSTTOKEN lastval LINECOUNTER *line;
if (*hiteof) return *hiteof;
*string = t;
free(t);
return 0;
}
void write_SegManagerPtr(Common::WriteStream *fh, const SegManager * const *foo) {
%CFSMLWRITE bool &((*foo)->isSci1_1) INTO fh;
%CFSMLWRITE SegManager *foo INTO fh;
}
int read_SegManagerPtr(Common::SeekableReadStream *fh, SegManager **foo, const char *lastval, int *line, int *hiteof) {
char *token;
int assignment;
bool sci11;
%CFSMLREAD bool (&sci11) FROM fh ERRVAR *hiteof FIRSTTOKEN lastval LINECOUNTER *line;
*foo = new SegManager(sci11);
token = _cfsml_get_identifier(fh, line, hiteof, &assignment);
%CFSMLREAD SegManager (*foo) FROM fh ERRVAR *hiteof FIRSTTOKEN token LINECOUNTER *line;
return 0;
}
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// This function is called to undo some strange stuff done in preparation
// to writing a gamestate to disk
void _gamestate_unfrob(EngineState *s) {
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}
int gamestate_save(EngineState *s, Common::WriteStream *fh, const char* savename) {
tm curTime;
g_system->getTimeAndDate(curTime);
SavegameMetadata meta;
meta.savegame_version = FREESCI_CURRENT_SAVEGAME_VERSION;
meta.savegame_name = savename;
meta.version = s->version;
meta.game_version = s->game_version;
meta.savegame_date = ((curTime.tm_mday & 0xFF) << 24) | (((curTime.tm_mon + 1) & 0xFF) << 16) | ((curTime.tm_year + 1900) & 0xFFFF);
meta.savegame_time = ((curTime.tm_hour & 0xFF) << 16) | (((curTime.tm_min) & 0xFF) << 8) | ((curTime.tm_sec) & 0xFF);
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_global_save_state = s;
s->savegame_version = FREESCI_CURRENT_SAVEGAME_VERSION;
s->dyn_views_list_serial = (s->dyn_views)? s->dyn_views->serial : -2;
s->drop_views_list_serial = (s->drop_views)? s->drop_views->serial : -2;
s->port_serial = (s->port)? s->port->serial : -2;
if (s->execution_stack_base) {
sciprintf("Cannot save from below kernel function\n");
return 1;
}
/*
if (s->sound_server) {
if ((s->sound_server->save)(s, dirname)) {
sciprintf("Saving failed for the sound subsystem\n");
chdir("..");
return 1;
}
}
*/
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// Calculate the time spent with this game
s->game_time = (g_system->getMillis() - s->game_start_time) / 1000;
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%CFSMLWRITE SavegameMetadata (&meta) INTO fh;
%CFSMLWRITE EngineState s INTO fh;
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_gamestate_unfrob(s);
return 0;
}
static SegmentId find_unique_seg_by_type(SegManager *self, int type) {
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int i;
for (i = 0; i < self->heap_size; i++)
if (self->heap[i] &&
self->heap[i]->type == type)
return i;
return -1;
}
static byte *find_unique_script_block(EngineState *s, byte *buf, int type) {
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int magic_pos_adder = s->version >= SCI_VERSION_FTU_NEW_SCRIPT_HEADER ? 0 : 2;
buf += magic_pos_adder;
do {
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int seeker_type = READ_LE_UINT16(buf);
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int seeker_size;
if (seeker_type == 0) break;
if (seeker_type == type) return buf;
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seeker_size = READ_LE_UINT16(buf + 2);
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buf += seeker_size;
} while(1);
return NULL;
}
static void reconstruct_stack(EngineState *retval) {
SegmentId stack_seg = find_unique_seg_by_type(retval->seg_manager, MEM_OBJ_STACK);
dstack_t *stack = &(retval->seg_manager->heap[stack_seg]->data.stack);
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retval->stack_segment = stack_seg;
retval->stack_base = stack->entries;
retval->stack_top = retval->stack_base + VM_STACK_SIZE;
}
static int clone_entry_used(CloneTable *table, int n) {
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int backup;
int seeker = table->first_free;
CloneEntry *entries = table->table;
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if (seeker == HEAPENTRY_INVALID) return 1;
do {
if (seeker == n) return 0;
backup = seeker;
seeker = entries[seeker].next_free;
} while (entries[backup].next_free != HEAPENTRY_INVALID);
return 1;
}
static void load_script(EngineState *s, SegmentId seg) {
Resource *script, *heap = NULL;
Script *scr = &(s->seg_manager->heap[seg]->data.script);
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scr->buf = (byte *)malloc(scr->buf_size);
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script = s->resmgr->findResource(kResourceTypeScript, scr->nr, 0);
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if (s->version >= SCI_VERSION(1,001,000))
heap = s->resmgr->findResource(kResourceTypeHeap, scr->nr, 0);
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switch (s->seg_manager->isSci1_1) {
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case 0 :
s->seg_manager->mcpyInOut(0, script->data, script->size, seg, SEG_ID);
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break;
case 1 :
s->seg_manager->mcpyInOut(0, script->data, script->size, seg, SEG_ID);
s->seg_manager->mcpyInOut(scr->script_size, heap->data, heap->size, seg, SEG_ID);
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break;
}
}
static void reconstruct_scripts(EngineState *s, SegManager *self) {
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int i;
MemObject *mobj;
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for (i = 0; i < self->heap_size; i++) {
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if (self->heap[i]) {
mobj = self->heap[i];
switch (mobj->type) {
case MEM_OBJ_SCRIPT: {
int j;
Script *scr = &mobj->data.script;
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load_script(s, i);
scr->locals_block = scr->locals_segment == 0 ? NULL : &s->seg_manager->heap[scr->locals_segment]->data.locals;
scr->export_table = (uint16 *) find_unique_script_block(s, scr->buf, sci_obj_exports);
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scr->synonyms = find_unique_script_block(s, scr->buf, sci_obj_synonyms);
scr->code = NULL;
scr->code_blocks_nr = 0;
scr->code_blocks_allocated = 0;
if (!self->isSci1_1)
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scr->export_table += 3;
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for (j = 0; j < scr->objects_nr; j++) {
byte *data = scr->buf + scr->objects[j].pos.offset;
scr->objects[j].base = scr->buf;
scr->objects[j].base_obj = data;
}
break;
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}
default:
break;
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}
}
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}
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for (i = 0; i < self->heap_size; i++) {
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if (self->heap[i]) {
mobj = self->heap[i];
switch (mobj->type) {
case MEM_OBJ_SCRIPT: {
int j;
Script *scr = &mobj->data.script;
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for (j = 0; j < scr->objects_nr; j++) {
byte *data = scr->buf + scr->objects[j].pos.offset;
if (self->isSci1_1) {
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uint16 *funct_area = (uint16 *) (scr->buf + READ_LE_UINT16( data + 6 ));
uint16 *prop_area = (uint16 *) (scr->buf + READ_LE_UINT16( data + 4 ));
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scr->objects[j].base_method = funct_area;
scr->objects[j].base_vars = prop_area;
} else {
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int funct_area = READ_LE_UINT16( data + SCRIPT_FUNCTAREAPTR_OFFSET );
Object *base_obj;
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base_obj = obj_get(s, scr->objects[j].variables[SCRIPT_SPECIES_SELECTOR]);
if (!base_obj) {
sciprintf("Object without a base class: Script %d, index %d (reg address "PREG"\n",
scr->nr, j, PRINT_REG(scr->objects[j].variables[SCRIPT_SPECIES_SELECTOR]));
continue;
}
scr->objects[j].variable_names_nr = base_obj->variables_nr;
scr->objects[j].base_obj = base_obj->base_obj;
scr->objects[j].base_method = (uint16 *) (data + funct_area);
scr->objects[j].base_vars = (uint16 *) (data + scr->objects[j].variable_names_nr * 2 + SCRIPT_SELECTOR_OFFSET);
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}
}
break;
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}
default:
break;
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}
}
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}
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}
void reconstruct_clones(EngineState *s, SegManager *self) {
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int i;
MemObject *mobj;
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for (i = 0; i < self->heap_size; i++) {
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if (self->heap[i]) {
mobj = self->heap[i];
switch (mobj->type) {
case MEM_OBJ_CLONES: {
int j;
CloneEntry *seeker = mobj->data.clones.table;
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sciprintf("Free list: ");
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for (j = mobj->data.clones.first_free; j != HEAPENTRY_INVALID; j = mobj->data.clones.table[j].next_free) {
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sciprintf("%d ", j);
}
sciprintf("\n");
sciprintf("Entries w/zero vars: ");
for (j = 0; j < mobj->data.clones.max_entry; j++) {
if (mobj->data.clones.table[j].entry.variables == NULL)
sciprintf("%d ", j);
}
sciprintf("\n");
for (j = 0; j < mobj->data.clones.max_entry; j++) {
Object *base_obj;
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if (!clone_entry_used(&mobj->data.clones, j)) {
seeker++;
continue;
}
base_obj = obj_get(s, seeker->entry.variables[SCRIPT_SPECIES_SELECTOR]);
if (!base_obj) {
sciprintf("Clone entry without a base class: %d\n", j);
seeker->entry.base = seeker->entry.base_obj = NULL;
seeker->entry.base_vars = seeker->entry.base_method = NULL;
continue;
}
seeker->entry.base = base_obj->base;
seeker->entry.base_obj = base_obj->base_obj;
seeker->entry.base_vars = base_obj->base_vars;
seeker->entry.base_method = base_obj->base_method;
seeker++;
}
break;
}
default:
break;
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}
}
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}
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}
int _reset_graphics_input(EngineState *s);
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static void reconstruct_sounds(EngineState *s) {
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song_t *seeker;
int it_type = s->resmgr->_sciVersion >= SCI_VERSION_01 ? SCI_SONG_ITERATOR_TYPE_SCI1 : SCI_SONG_ITERATOR_TYPE_SCI0;
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if (s->sound.songlib.lib)
seeker = *(s->sound.songlib.lib);
else {
song_lib_init(&s->sound.songlib);
seeker = NULL;
}
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while (seeker) {
SongIterator *base, *ff;
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int oldstatus;
SongIteratorMessage msg;
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base = ff = build_iterator(s, seeker->resource_num, it_type, seeker->handle);
if (seeker->restore_behavior == RESTORE_BEHAVIOR_CONTINUE)
ff = new_fast_forward_iterator(base, seeker->restore_time);
ff->init();
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msg = SongIteratorMessage(seeker->handle, SIMSG_SET_LOOPS(seeker->loops));
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songit_handle_message(&ff, msg);
msg = SongIteratorMessage(seeker->handle, SIMSG_SET_HOLD(seeker->hold));
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songit_handle_message(&ff, msg);
oldstatus = seeker->status;
seeker->status = SOUND_STATUS_STOPPED;
seeker->it = ff;
sfx_song_set_status(&s->sound, seeker->handle, oldstatus);
seeker = seeker->next;
}
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}
EngineState *gamestate_restore(EngineState *s, Common::SeekableReadStream *fh) {
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int read_eof = 0;
EngineState *retval;
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songlib_t temp;
/*
if (s->sound_server) {
if ((s->sound_server->restore)(s, dirname)) {
sciprintf("Restoring failed for the sound subsystem\n");
return NULL;
}
}
*/
retval = new EngineState();
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retval->savegame_version = -1;
_global_save_state = retval;
retval->gfx_state = s->gfx_state;
SavegameMetadata meta;
%CFSMLREAD-ATOMIC SavegameMetadata (&meta) FROM fh ERRVAR read_eof;
if (read_eof)
return false;
if ((meta.savegame_version < FREESCI_MINIMUM_SAVEGAME_VERSION) ||
(meta.savegame_version > FREESCI_CURRENT_SAVEGAME_VERSION)) {
if (meta.savegame_version < FREESCI_MINIMUM_SAVEGAME_VERSION)
sciprintf("Old savegame version detected- can't load\n");
else
sciprintf("Savegame version is %d- maximum supported is %0d\n", meta.savegame_version, FREESCI_CURRENT_SAVEGAME_VERSION);
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return NULL;
}
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// Backwards compatibility settings
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retval->dyn_views = NULL;
retval->drop_views = NULL;
retval->port = NULL;
retval->save_dir_copy_buf = NULL;
retval->sound_mute = s->sound_mute;
retval->sound_volume = s->sound_volume;
%CFSMLREAD-ATOMIC EngineState retval FROM fh ERRVAR read_eof;
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sfx_exit(&s->sound);
_gamestate_unfrob(retval);
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// Set exec stack base to zero
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retval->execution_stack_base = 0;
retval->execution_stack_pos = 0;
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// Now copy all current state information
// Graphics and input state:
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retval->animation_delay = s->animation_delay;
retval->animation_granularity = s->animation_granularity;
retval->gfx_state = s->gfx_state;
retval->resmgr = s->resmgr;
temp = retval->sound.songlib;
sfx_init(&retval->sound, retval->resmgr, s->sfx_init_flags);
retval->sfx_init_flags = s->sfx_init_flags;
song_lib_free(retval->sound.songlib);
retval->sound.songlib = temp;
_reset_graphics_input(retval);
reconstruct_stack(retval);
reconstruct_scripts(retval, retval->seg_manager);
reconstruct_clones(retval, retval->seg_manager);
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retval->game_obj = s->game_obj;
retval->script_000 = &retval->seg_manager->heap[script_get_segment(s, 0, SCRIPT_GET_DONT_LOAD)]->data.script;
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retval->gc_countdown = GC_INTERVAL - 1;
retval->save_dir_copy = make_reg(s->sys_strings_segment, SYS_STRING_SAVEDIR);
retval->save_dir_edit_offset = 0;
retval->sys_strings_segment = find_unique_seg_by_type(retval->seg_manager, MEM_OBJ_SYS_STRINGS);
retval->sys_strings = &(((MemObject *)(GET_SEGMENT(*retval->seg_manager, retval->sys_strings_segment, MEM_OBJ_SYS_STRINGS)))->data.sys_strings);
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// Restore system strings
SystemString *str;
// First, pad memory
for (int i = 0; i < SYS_STRINGS_MAX; i++) {
str = &retval->sys_strings->strings[i];
char *data = str->value;
if (data) {
str->value = (char *)sci_malloc(str->max_size + 1);
strcpy(str->value, data);
free(data);
}
}
str = &retval->sys_strings->strings[SYS_STRING_SAVEDIR];
strncpy(str->value, s->sys_strings->strings[SYS_STRING_SAVEDIR].value, str->max_size);
str->value[str->max_size] = 0; // Make sure to terminate
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// Time state:
retval->last_wait_time = g_system->getMillis();
retval->game_start_time = g_system->getMillis() - retval->game_time * 1000;
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// static parser information:
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retval->parser_rules = s->parser_rules;
retval->parser_words_nr = s->parser_words_nr;
retval->parser_words = s->parser_words;
retval->parser_suffices_nr = s->parser_suffices_nr;
retval->parser_suffices = s->parser_suffices;
retval->parser_branches_nr = s->parser_branches_nr;
retval->parser_branches = s->parser_branches;
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// static VM/Kernel information:
retval->_selectorNames = s->_selectorNames;
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retval->kernel_names_nr = s->kernel_names_nr;
retval->kernel_names = s->kernel_names;
retval->kfunct_table = s->kfunct_table;
retval->kfunct_nr = s->kfunct_nr;
retval->opcodes = s->opcodes;
memcpy(&(retval->selector_map), &(s->selector_map), sizeof(selector_map_t));
retval->max_version = retval->version;
retval->min_version = retval->version;
retval->parser_base = make_reg(s->sys_strings_segment, SYS_STRING_PARSER_BASE);
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// Copy breakpoint information from current game instance
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retval->have_bp = s->have_bp;
retval->bp_list = s->bp_list;
retval->debug_mode = s->debug_mode;
retval->kernel_opt_flags = 0;
retval->have_mouse_flag = 1;
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retval->successor = NULL;
retval->pic_priority_table = (int*)gfxop_get_pic_metainfo(retval->gfx_state);
retval->game_name = sci_strdup(obj_get_name(retval, retval->game_obj));
retval->sound.it = NULL;
retval->sound.flags = s->sound.flags;
retval->sound.song = NULL;
retval->sound.suspended = s->sound.suspended;
retval->sound.debug = s->sound.debug;
reconstruct_sounds(retval);
return retval;
}
bool get_savegame_metadata(Common::SeekableReadStream* stream, SavegameMetadata* meta) {
int read_eof = 0;
%CFSMLREAD-ATOMIC SavegameMetadata meta FROM stream ERRVAR read_eof;
if (read_eof)
return false;
if ((meta->savegame_version < FREESCI_MINIMUM_SAVEGAME_VERSION) ||
(meta->savegame_version > FREESCI_CURRENT_SAVEGAME_VERSION)) {
if (meta->savegame_version < FREESCI_MINIMUM_SAVEGAME_VERSION)
sciprintf("Old savegame version detected- can't load\n");
else
sciprintf("Savegame version is %d- maximum supported is %0d\n", meta->savegame_version, FREESCI_CURRENT_SAVEGAME_VERSION);
return false;
}
return true;
}
} // End of namespace Sci