aboutsummaryrefslogtreecommitdiff
path: root/engines/sci/engine/state.h
blob: 2a3a6a150c0fc6e475880c214a7023607f9312fb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
/* 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"
#include "common/serializer.h"

namespace Common {
	class SeekableReadStream;
	class WriteStream;
}

#include "sci/scicore/vocabulary.h"
#include "sci/scicore/resource.h"
#include "sci/engine/script.h"
#include "sci/scicore/sciconsole.h"
#include "sci/scicore/versions.h"
#include "sci/engine/seg_manager.h"
#include "sci/gfx/gfx_system.h"
#include "sci/sfx/core.h"

namespace Sci {

class Menubar;
struct kfunct_sig_pair_t;	// from kernel.h

struct gfx_state_t;
struct gfxw_port_t;
struct gfxw_visual_t;
struct gfxw_container_t;	
typedef gfxw_container_t gfxw_list_t;


class DirSeeker {
protected:
	EngineState *_vm;
	reg_t _outbuffer;
	Common::StringList _savefiles;
	Common::StringList::const_iterator _iter;

public:
	DirSeeker(EngineState *s) : _vm(s) {
		_outbuffer = NULL_REG;
		_iter = _savefiles.begin();
	}
	
	void firstFile(const char *mask, reg_t buffer);
	void nextFile();
};

#define CURRENT_SAVEGAME_VERSION 8
#define MINIMUM_SAVEGAME_VERSION 8

#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;
};

class FileHandle {
public:
	Common::String _name;
	Common::SeekableReadStream *_in;
	Common::WriteStream *_out;
	
public:
	FileHandle();
	~FileHandle();
	
	void close();
	bool isOpen() const;
};

struct EngineState : public Common::Serializable {
public:
	EngineState();
	virtual ~EngineState();
	virtual void saveLoadWithSerializer(Common::Serializer &ser);

public:
	int savegame_version;

	int widget_serial_counter; /* Used for savegames */

	ResourceManager *resmgr; /* The resource manager */

	Common::String _gameName; /* 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 */

	/** Text on the status bar, or NULL if the title bar is blank */
	Common::String _statusBarText;

	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 *_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 */

	ExecStack *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 */

	SegmentId stack_segment; /* Heap area for the stack to use */
	StackPtr stack_base; /* Pointer to the least stack element */
	StackPtr stack_top; /* First invalid stack element */

	SegmentId 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() */
	SegmentId script_000_segment;
	Script *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 *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 */
	SegmentId sys_strings_segment;
	SystemStrings *sys_strings;

	SegmentId string_frag_segment;

	/* Parser data: */
	WordMap _parserWords;
	SuffixList _parserSuffixes;
	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 */

	SynonymList _synonyms; /* The list of synonyms */

	reg_t game_obj; /* Pointer to the game object */

	int classtable_size; /* Number of classes in the table- for debugging */
	Class *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 */
};

PaletteEntry 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.
*/

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