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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.
*
* $URL$
* $Id$
*
*/
#ifndef SCI_INCLUDE_ENGINE_H
#define SCI_INCLUDE_ENGINE_H
#include "common/scummsys.h"
#include "common/array.h"
namespace Common {
class SeekableReadStream;
class WriteStream;
}
#include "sci/include/vocabulary.h"
#include "sci/include/sciresource.h"
#include "sci/include/script.h"
#include "sci/scicore/sciconsole.h"
#include "sci/include/versions.h"
#include "sci/engine/seg_manager.h"
#include "sci/gfx/gfx_state_internal.h"
#include "sci/sfx/sfx_engine.h"
namespace Sci {
struct menubar_t;
struct kfunct_sig_pair_t; // from kernel.h
class DirSeeker;
#define FREESCI_CURRENT_SAVEGAME_VERSION 8
#define FREESCI_MINIMUM_SAVEGAME_VERSION 8
#define MAX_GAMEDIR_SIZE 32 /* Used for subdirectory inside of "~/.freesci/" */
#define MAX_SAVEGAME_NR 20 /* Maximum number of savegames */
#define MAX_SAVE_DIR_SIZE MAXPATHLEN
/* values for EngineState.restarting_flag */
#define SCI_GAME_IS_NOT_RESTARTING 0
#define SCI_GAME_WAS_RESTARTED 1
#define SCI_GAME_IS_RESTARTING_NOW 2
#define SCI_GAME_WAS_RESTARTED_AT_LEAST_ONCE 4
struct drawn_pic_t {
int nr;
int palette;
};
// Savegame metadata
struct SavegameMetadata {
const char *savegame_name;
int savegame_version;
char *game_version;
sci_version_t version;
int savegame_date;
int savegame_time;
};
class FileHandle {
public:
FILE *_file;
FileHandle() : _file(0) {
}
~FileHandle() {
if (_file)
fclose(_file);
}
};
struct EngineState {
EngineState();
int savegame_version;
int widget_serial_counter; /* Used for savegames */
ResourceManager *resmgr; /* The resource manager */
char *game_name; /* Designation of the primary object (which inherits from Game) */
char *game_version;
/* Non-VM information */
gfx_state_t *gfx_state; /* Graphics state and driver */
gfx_pixmap_t *old_screen; /* Old screen content: Stored during kDrawPic() for kAnimate() */
sfx_state_t sound; /* sound subsystem */
int sfx_init_flags; /* flags the sfx subsystem was initialised with */
unsigned int sound_volume; /* 0x0 -> 0xf Current volume of sound system */
unsigned int sound_mute; /* 0 = not, else == saved value */
byte restarting_flags; /* Flags used for restarting */
byte have_mouse_flag; /* Do we have a hardware pointing device? */
byte pic_not_valid; /* Is 0 if the background picture is "valid" */
byte pic_is_new; /* New pic was loaded or port was opened */
byte onscreen_console; /* Use the onscreen console for debugging */
byte *osc_backup; /* Backup of the pre-onscreen console screen data */
int *pic_priority_table; /* 16 entries with priorities or NULL if not present */
char *status_bar_text; /* Text on the status bar, or NULL if the title bar is blank */
int status_bar_foreground, status_bar_background;
long game_time; /* Counted at 60 ticks per second, reset during start time */
reg_t save_dir_copy; /* Last copy of the save dir */
int save_dir_edit_offset; /* For kEdit(): Display offset for editing the savedir */
char *save_dir_copy_buf; /* Temp savedir buffer for kEdit() */
int mouse_pointer_view; /* Mouse pointer resource, or -1 if disabled */
int mouse_pointer_loop; /* Mouse pointer resource, or -1 if disabled */
int mouse_pointer_cel; /* Mouse pointer resource, or -1 if disabled */
int save_mouse_pointer_view; /* Temporary storage for mouse pointer resource, when the pointer is hidden */
int save_mouse_pointer_loop; /* Temporary storage for mouse pointer resource, when the pointer is hidden */
int save_mouse_pointer_cel; /* Temporary storage for mouse pointer resource, when the pointer is hidden */
int port_serial; /* Port serial number, for save/restore */
gfxw_port_t *port; /* The currently active port */
gfx_color_t ega_colors[16]; /* The 16 EGA colors- for SCI0(1) */
gfxw_visual_t *visual; /* A visual widget, containing all ports */
gfxw_port_t *titlebar_port; /* Title bar viewport (0,0,9,319) */
gfxw_port_t *wm_port; /* window manager viewport and designated &heap[0] view (10,0,199,319) */
gfxw_port_t *picture_port; /* The background picture viewport (10,0,199,319) */
gfxw_port_t *iconbar_port; /* Full-screen port used for non-clipped icon bar draw in SCI1 */
gfx_map_mask_t pic_visible_map; /* The number of the map to display in update commands */
int pic_animate; /* The animation used by Animate() to display the picture */
int dyn_views_list_serial; /* Used for save/restore */
gfxw_list_t *dyn_views; /* Pointers to pic and dynamic view lists */
int drop_views_list_serial; /* Used for save/restore */
gfxw_list_t *drop_views; /* A list Animate() can dump dropped dynviews into */
long animation_delay; /* A delay factor for pic opening animations. Defaults to 500. */
int animation_granularity; /* Number of animation steps to perform betwen updates for transition animations */
menubar_t *menubar; /* The menu bar */
int priority_first; /* The line where priority zone 0 ends */
int priority_last; /* The line where the highest priority zone starts */
int pics_drawn_nr;
int pics_nr;
drawn_pic_t *pics;
uint32 game_start_time; /* The time at which the interpreter was started */
uint32 last_wait_time; /* The last time the game invoked Wait() */
byte version_lock_flag; /* Set to 1 to disable any autodetection mechanisms */
sci_version_t version; /* The approximated patchlevel of the version to emulate */
sci_version_t max_version, min_version; /* Used for autodetect sanity checks */
unsigned int kernel_opt_flags; /* Kernel optimization flags- used for performance tweaking */
/* Kernel File IO stuff */
Common::Array<FileHandle> _fileHandles; /* Array of file handles. Dynamically increased if required. */
DirSeeker *dirseeker;
/* VM Information */
exec_stack_t *execution_stack; /* The execution stack */
int execution_stack_size; /* Number of stack frames allocated */
int execution_stack_pos; /* Position on the execution stack */
int execution_stack_base; /* When called from kernel functions, the vm
** is re-started recursively on the same stack.
** This variable contains the stack base for the
** current vm.
*/
int execution_stack_pos_changed; /* Set to 1 if the execution stack position
** should be re-evaluated by the vm
*/
reg_t r_acc; /* Accumulator */
unsigned int r_amp_rest; /* &rest register (only used for save games) */
reg_t r_prev; /* previous comparison result */
seg_id_t stack_segment; /* Heap area for the stack to use */
stack_ptr_t stack_base; /* Pointer to the least stack element */
stack_ptr_t stack_top; /* First invalid stack element */
seg_id_t parser_segment; /* A heap area used by the parser for error reporting */
reg_t parser_base; /* Base address for the parser error reporting mechanism */
reg_t parser_event; /* The event passed to Parse() and later used by Said() */
seg_id_t script_000_segment;
script_t *script_000; /* script 000, e.g. for globals */
int parser_lastmatch_word; /* Position of the input word the parser last matched on, or SAID_NO_MATCH */
/* Debugger data: */
breakpoint_t *bp_list; /* List of breakpoints */
int have_bp; /* Bit mask specifying which types of breakpoints are used in bp_list */
unsigned int debug_mode; /* Contains flags for the various debug modes */
/* System strings */
seg_id_t sys_strings_segment;
sys_strings_t *sys_strings;
/* Parser data: */
word_t **parser_words;
int parser_words_nr;
suffix_t **parser_suffices;
int parser_suffices_nr;
parse_tree_branch_t *parser_branches;
parse_rule_list_t *parser_rules; /* GNF rules used in the parser algorithm */
int parser_branches_nr;
parse_tree_node_t parser_nodes[VOCAB_TREE_NODES]; /* The parse tree */
int parser_valid; /* If something has been correctly parsed */
synonym_t *synonyms; /* The list of synonyms */
int synonyms_nr;
reg_t game_obj; /* Pointer to the game object */
int classtable_size; /* Number of classes in the table- for debugging */
class_t *classtable; /* Table of all classes */
SegManager *seg_manager;
int gc_countdown; /* Number of kernel calls until next gc */
Common::StringList _selectorNames;
int kernel_names_nr; /* Number of kernel function names */
char **kernel_names; /* List of kernel names */
kfunct_sig_pair_t *kfunct_table; /* Table of kernel functions */
int kfunct_nr; /* Number of mapped kernel functions; may be more than
** kernel_names_nr */
opcode *opcodes;
selector_map_t selector_map; /* Shortcut list for important selectors */
EngineState *successor; /* Successor of this state: Used for restoring */
};
#define STATE_T_DEFINED
int gamestate_save(EngineState *s, Common::WriteStream *save, const char *savename);
/* Saves a game state to the hard disk in a portable way
** Parameters: (EngineState *) s: The state to save
** (WriteStream *) save: The stream to save to
** (char *) savename: The description of the savegame
** Returns : (int) 0 on success, 1 otherwise
*/
EngineState *gamestate_restore(EngineState *s, Common::SeekableReadStream *save);
/* Restores a game state from a directory
** Parameters: (EngineState *) s: An older state from the same game
** (char *) dirname: The subdirectory to restore from
** Returns : (EngineState *) NULL on failure, a pointer to a valid EngineState otherwise
*/
bool get_savegame_metadata(Common::SeekableReadStream* stream, SavegameMetadata* meta);
/* Read the header from a savegame
*/
gfx_pixmap_color_t *get_pic_color(EngineState *s, int color);
/* Retrieves the gfx_pixmap_color_t associated with a game color index
** Parameters: (EngineState *) s: The game state
** (int) color: The color to look up
** Returns : (gfx_pixmap_color_t *) The requested color.
*/
void other_libs_exit();
/* Called directly before FreeSCI ends to allow libraries to clean up
*/
static inline reg_t not_register(EngineState *s, reg_t r) {
if (s->version >= SCI_VERSION_FTU_INVERSE_CANBEHERE)
return make_reg(0, !r.offset);
else
return r;
}
} // End of namespace Sci
#endif // SCI_INCLUDE_ENGINE_H
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