aboutsummaryrefslogtreecommitdiff
path: root/engines/agi/agi.h
blob: 01db2acb2321fafd1d98f33dfa344d0b2b07f776 (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
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
/* 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 AGI_H
#define AGI_H

#include "common/stdafx.h"
#include "common/scummsys.h"
#include "common/endian.h"
#include "common/util.h"
#include "common/file.h"
#include "common/savefile.h"
#include "common/system.h"
#include "common/hash-str.h"

#include "engines/engine.h"

namespace Agi {

typedef signed int Err;

/*
 * Version and other definitions
 */

#define USE_IIGS_SOUND

#define	TITLE		"AGI engine"

#define DIR_		"dir"
#define LOGDIR		"logdir"
#define PICDIR		"picdir"
#define VIEWDIR		"viewdir"
#define	SNDDIR		"snddir"
#define OBJECTS		"object"
#define WORDS		"words.tok"

#define	MAX_DIRS	256
#define	MAX_VARS	256
#define	MAX_FLAGS	(256 >> 3)
#define MAX_VIEWTABLE	255	/* KQ3 uses o255! */
#define MAX_WORDS	20
#define	MAX_STRINGS	24		/* MAX_STRINGS + 1 used for get.num */
#define MAX_STRINGLEN	40
#ifndef MAX_PATH
#define MAX_PATH	260
#endif

#define	_EMPTY		0xfffff
#define	EGO_OWNED	0xff

#define	CRYPT_KEY_SIERRA	"Avis Durgan"
#define CRYPT_KEY_AGDS		"Alex Simkin"

#ifndef INLINE
#define INLINE
#endif

#define	MSG_BOX_COLOUR	0x0f	/* White */
#define MSG_BOX_TEXT	0x00	/* Black */
#define MSG_BOX_LINE	0x04	/* Red */
#define STATUS_FG	0x00		/* Black */
#define	STATUS_BG	0x0f		/* White */

#define ADD_PIC 1
#define ADD_VIEW 2

} // End of namespace Agi

/* AGI resources */
#include "agi/console.h"
#include "agi/view.h"
#include "agi/picture.h"
#include "agi/logic.h"
#include "agi/sound.h"

namespace Agi {

enum AgiGameType {
	GType_V2 = 1,
	GType_V3
};

enum AgiGameFeatures {
	GF_AGIMOUSE =    (1 << 0),
	GF_AGDS =        (1 << 1),
	GF_AGI256 =      (1 << 2),
	GF_AGI256_2 =    (1 << 3),
	GF_AGIPAL =      (1 << 4),
	GF_MACGOLDRUSH = (1 << 5),
	GF_FANMADE =     (1 << 6)
};

enum AgiGameID {
	GID_AGIDEMO,
	GID_BC,
	GID_DDP,
	GID_GOLDRUSH,
	GID_KQ1,
	GID_KQ2,
	GID_KQ3,
	GID_KQ4,
	GID_LSL1,
	GID_MH1,
	GID_MH2,
	GID_MIXEDUP,
	GID_PQ1,
	GID_SQ1,
	GID_SQ2,
	GID_XMASCARD,
	GID_FANMADE		// TODO: Should this be extended to include all fanmade games?
};

struct AGIGameDescription;

enum {
	NO_GAMEDIR = 0,
	GAMEDIR
};

enum AGIErrors {
	errOK = 0,
	errDoNothing,
	errBadCLISwitch,
	errInvalidAGIFile,
	errBadFileOpen,
	errNotEnoughMemory,
	errBadResource,
	errUnknownAGIVersion,
	errRestartGame,
	errNoLoopsInView,
	errViewDataError,
	errNoGameList,

	errUnk = 127
};

enum kDebugLevels {
	kDebugLevelMain =      1 << 0,
	kDebugLevelResources = 1 << 1,
	kDebugLevelSprites =   1 << 2,
	kDebugLevelInventory = 1 << 3,
	kDebugLevelInput =     1 << 4,
	kDebugLevelMenu =      1 << 5,
	kDebugLevelScripts =   1 << 6,
	kDebugLevelSound =     1 << 7,
	kDebugLevelText =      1 << 8,
	kDebugLevelSavegame =  1 << 9
};

/**
 * AGI resources.
 */
enum {
	rLOGIC = 1,
	rSOUND,
	rVIEW,
	rPICTURE
};

enum {
	RES_LOADED = 1,
	RES_COMPRESSED = 0x40
};

enum {
	lCOMMAND_MODE = 1,
	lTEST_MODE
};

struct gameIdList {
	gameIdList *next;
	uint32 version;
	uint32 crc;
	char *gName;
	char *switches;
};

struct Mouse {
	int button;
	unsigned int x;
	unsigned int y;
};

#define report printf

enum GameId {
	GID_AGI = 1
};

#define WIN_TO_PIC_X(x) ((x) / 2)
#define WIN_TO_PIC_Y(y) ((y) < 8 ? 999 : (y) >= (8 + _HEIGHT) ? 999 : (y) - 8)

/**
 * AGI variables.
 */
enum {
	vCurRoom = 0,		/* 0 */
	vPrevRoom,
	vBorderTouchEgo,
	vScore,
	vBorderCode,
	vBorderTouchObj,	/* 5 */
	vEgoDir,
	vMaxScore,
	vFreePages,
	vWordNotFound,
	vTimeDelay,		/* 10 */
	vSeconds,
	vMinutes,
	vHours,
	vDays,
	vJoystickSensitivity,	/* 15 */
	vEgoViewResource,
	vAgiErrCode,
	vAgiErrCodeInfo,
	vKey,
	vComputer,		/* 20 */
	vWindowReset,
	vSoundgen,
	vVolume,
	vMaxInputChars,
	vSelItem,		/* 25 */
	vMonitor
};

/**
 * Different monitor types.
 * Used with AGI variable 26 i.e. vMonitor.
 */
enum AgiMonitorType {
	kAgiMonitorCga = 0,
	// kAgiMonitorTandy = 1, // Not sure about this
	kAgiMonitorHercules = 2,
	kAgiMonitorEga = 3
	// kAgiMonitorVga = 4 // Not sure about this
};

/**
 * AGI flags
 */
enum {
	fEgoWater = 0,	/* 0 */
	fEgoInvisible,
	fEnteredCli,
	fEgoTouchedP2,
	fSaidAcceptedInput,
	fNewRoomExec,	/* 5 */
	fRestartGame,
	fScriptBlocked,
	fJoySensitivity,
	fSoundOn,
	fDebuggerOn,		/* 10 */
	fLogicZeroFirsttime,
	fRestoreJustRan,
	fStatusSelectsItems,
	fMenusWork,
	fOutputMode,		/* 15 */
	fAutoRestart
};

struct AgiEvent {
	uint16 data;
	uint8 occured;
};

struct AgiObject {
	int location;
	char *name;
};

struct AgiWord {
	int id;
	char *word;
};

struct AgiDir {
	uint8 volume;
	uint32 offset;
	uint32 len;
	uint32 clen;
	uint8 flags;
	/* 0 = not in mem, can be freed
	 * 1 = in mem, can be released
	 * 2 = not in mem, cant be released
	 * 3 = in mem, cant be released
	 * 0x40 = was compressed
	 */
};

struct AgiBlock {
	int active;
	int x1, y1;
	int x2, y2;
	uint8 *buffer;		/* used for window background */
};

#define EGO_VIEW_TABLE	0
#define	HORIZON		36
#define _WIDTH		160
#define _HEIGHT		168

/**
 * AGI game structure.
 * This structure contains all global data of an AGI game executed
 * by the interpreter.
 */
struct AgiGame {
#define STATE_INIT	0x00
#define STATE_LOADED	0x01
#define STATE_RUNNING	0x02
	int state;		/**< state of the interpreter */

	char name[8];	/**< lead in id (e.g. `GR' for goldrush) */
	char id[8];		/**< game id */
	uint32 crc;		/**< game CRC */

	/* game flags and variables */
	uint8 flags[MAX_FLAGS]; /**< 256 1-bit flags */
	uint8 vars[MAX_VARS];   /**< 256 variables */

	/* internal variables */
	int horizon;			/**< horizon y coordinate */
	int lineStatus;		/**< line number to put status on */
	int lineUserInput;	/**< line to put user input on */
	int lineMinPrint;		/**< num lines to print on */
	int cursorPos;			/**< column where the input cursor is */
	uint8 inputBuffer[40]; /**< buffer for user input */
	uint8 echoBuffer[40]; 	/**< buffer for echo.line */
	int keypress;
#define INPUT_NORMAL	0x01
#define INPUT_GETSTRING	0x02
#define INPUT_MENU	0x03
#define INPUT_NONE	0x04
	int inputMode;			/**< keyboard input mode */
	int inputEnabled;		/**< keyboard input enabled */
	int lognum;				/**< current logic number */

	/* internal flags */
	int playerControl;		/**< player is in control */
	int quitProgNow;		/**< quit now */
	int statusLine;		/**< status line on/off */
	int clockEnabled;		/**< clock is on/off */
	int exitAllLogics;	/**< break cycle after new.room */
	int pictureShown;		/**< show.pic has been issued */
	int hasPrompt;			/**< input prompt has been printed */
#define ID_AGDS		0x00000001
#define ID_AMIGA	0x00000002
	int gameFlags;			/**< agi options flags */

	uint8 priTable[_HEIGHT];/**< priority table */

	/* windows */
	uint32 msgBoxTicks;	/**< timed message box tick counter */
	AgiBlock block;
	AgiBlock window;
	int hasWindow;

	/* graphics & text */
	int gfxMode;
	char cursorChar;
	unsigned int colorFg;
	unsigned int colorBg;
#define SBUF16_OFFSET 0
#define SBUF256_OFFSET ((_WIDTH) * (_HEIGHT))
#define FROM_SBUF16_TO_SBUF256_OFFSET ((SBUF256_OFFSET) - (SBUF16_OFFSET))
#define FROM_SBUF256_TO_SBUF16_OFFSET ((SBUF16_OFFSET) - (SBUF256_OFFSET))
	uint8 *sbufOrig;		/**< Pointer to the 160x336 AGI screen buffer that contains vertically two 160x168 screens (16 color and 256 color). */	
	uint8 *sbuf16c;			/**< 160x168 16 color (+control line & priority information) AGI screen buffer. Points at sbufOrig + SBUF16_OFFSET. */
	uint8 *sbuf256c;		/**< 160x168 256 color AGI screen buffer (For AGI256 and AGI256-2 support). Points at sbufOrig + SBUF256_OFFSET. */
	uint8 *sbuf;			/**< Currently chosen AGI screen buffer (sbuf256c if AGI256 or AGI256-2 is used, otherwise sbuf16c). */	

	/* player command line */
	AgiWord egoWords[MAX_WORDS];
	int numEgoWords;

	unsigned int numObjects;

	AgiEvent evKeyp[MAX_DIRS];  /**< keyboard keypress events */
	char strings[MAX_STRINGS + 1][MAX_STRINGLEN]; /**< strings */

	/* directory entries for resources */
	AgiDir dirLogic[MAX_DIRS];
	AgiDir dirPic[MAX_DIRS];
	AgiDir dirView[MAX_DIRS];
	AgiDir dirSound[MAX_DIRS];

	/* resources */
	AgiPicture pictures[MAX_DIRS]; 	/**< AGI picture resources */
	AgiLogic logics[MAX_DIRS];		/**< AGI logic resources */
	AgiView views[MAX_DIRS];		/**< AGI view resources */
	AgiSound sounds[MAX_DIRS];		/**< AGI sound resources */

	/* view table */
	VtEntry viewTable[MAX_VIEWTABLE];

	int32 ver;								/**< detected game version */

	int simpleSave;						/**< select simple savegames */
};

class AgiLoader {
private:
	int intVersion;
	AgiEngine *_vm;

public:

	AgiLoader() {}
	virtual ~AgiLoader() {}

	virtual int init() = 0;
	virtual int deinit() = 0;
	virtual int detectGame() = 0;
	virtual int loadResource(int, int) = 0;
	virtual int unloadResource(int, int) = 0;
	virtual int loadObjects(const char *) = 0;
	virtual int loadWords(const char *) = 0;
	virtual int version() = 0;
	virtual void setIntVersion(int) = 0;
	virtual int getIntVersion() = 0;
};

class AgiLoader_v2 : public AgiLoader {
private:
	int _intVersion;
	AgiEngine *_vm;

	int loadDir(AgiDir *agid, const char *fname);
	uint8 *loadVolRes(AgiDir *agid);

public:

	AgiLoader_v2(AgiEngine *vm) {
		_vm = vm;
		_intVersion = 0;
	}

	virtual int init();
	virtual int deinit();
	virtual int detectGame();
	virtual int loadResource(int, int);
	virtual int unloadResource(int, int);
	virtual int loadObjects(const char *);
	virtual int loadWords(const char *);
	virtual int version();
	virtual void setIntVersion(int);
	virtual int getIntVersion();
};

class AgiLoader_v3 : public AgiLoader {
private:
	int _intVersion;
	AgiEngine *_vm;

	int loadDir(AgiDir *agid, Common::File *fp, uint32 offs, uint32 len);
	uint8 *loadVolRes(AgiDir *agid);

public:

	AgiLoader_v3(AgiEngine *vm) {
		_vm = vm;
		_intVersion = 0;
	}

	virtual int init();
	virtual int deinit();
	virtual int detectGame();
	virtual int loadResource(int, int);
	virtual int unloadResource(int, int);
	virtual int loadObjects(const char *);
	virtual int loadWords(const char *);
	virtual int version();
	virtual void setIntVersion(int);
	virtual int getIntVersion();
};

class GfxMgr;
class SpritesMgr;
class Menu;
class SearchTree;

extern struct Mouse g_mouse;

/* Image stack support */
struct ImageStackElement {
	uint8 type;
	uint8 pad;
	int16 parm1;
	int16 parm2;
	int16 parm3;
	int16 parm4;
	int16 parm5;
	int16 parm6;
	int16 parm7;
};

struct StringData {
	int x;
	int y;
	int len;
	int str;
};

#define TICK_SECONDS 20

#define KEY_QUEUE_SIZE 16

class AgiEngine : public ::Engine {
	int _gameId;

protected:
	int init();
	int go();
	void shutdown();
	void initialize();

	bool initGame();

public:
	AgiEngine(OSystem *syst);
	virtual ~AgiEngine();
	int getGameId() {
		return _gameId;
	}

	const AGIGameDescription *_gameDescription;
	uint32 getGameID() const;
	uint32 getFeatures() const;
	uint16 getVersion() const;
	Common::Platform getPlatform() const;

private:

	int _keyQueue[KEY_QUEUE_SIZE];
	int _keyQueueStart;
	int _keyQueueEnd;

	bool _allowSynthetic;

	int checkPriority(VtEntry *v);
	int checkCollision(VtEntry *v);
	int checkPosition(VtEntry *v);

	uint32 matchVersion(uint32 crc);

	int _firstSlot;

public:
	AgiGame _game;
	AgiObject *_objects;	/* objects in the game */

	StringData _stringdata;

	AgiLoader *_loader;	/* loader */

	Common::RandomSource *_rnd;

	const char *getSavegameFilename(int num);
	void getSavegameDescription(int num, char *buf, bool showEmpty = true);
	int selectSlot();
	int saveGame(const char *fileName, const char *saveName);
	int saveGameDialog();
	int saveGameSimple();
	int loadGame(const char *fileName, bool checkId = true);
	int loadGameDialog();
	int loadGameSimple();

	volatile uint32 _clockCount;

	uint8 *_intobj;
	int _oldMode;

	Menu* _menu;

	char _lastSentence[40];

	SpritesMgr *_sprites;
	GfxMgr *_gfx;
	SoundMgr *_sound;
	PictureMgr *_picture;

	#define INITIAL_IMAGE_STACK_SIZE 32

	int _stackSize;
	ImageStackElement *_imageStack;
	int _imageStackPointer;

	void clearImageStack();
	void recordImageStackCall(uint8 type, int16 p1, int16 p2, int16 p3,
		int16 p4, int16 p5, int16 p6, int16 p7);
	void replayImageStackCall(uint8 type, int16 p1, int16 p2, int16 p3,
		int16 p4, int16 p5, int16 p6, int16 p7);
	void releaseImageStack();

	AgiDebug _debug;
	Common::RenderMode _renderMode;
	int _soundemu;

	int _keyControl;
	int _keyAlt;

	Console *_console;

	int agiInit();
	int agiDeinit();
	int agiVersion();
	int agiGetRelease();
	void agiSetRelease(int);
	int agiDetectGame();
	int agiLoadResource(int, int);
	int agiUnloadResource(int, int);
	void agiUnloadResources();

	void agiTimerLow();
	int agiGetKeypressLow();
	int agiIsKeypressLow();
	static void agiTimerFunctionLow(void *refCon);
	void initPriTable();

	void newInputMode(int);
	void oldInputMode();

	int getflag(int);
	void setflag(int, int);
	void flipflag(int);
	int getvar(int);
	void setvar(int, int);
	void decrypt(uint8 * mem, int len);
	void releaseSprites();
	int mainCycle();
	int viewPictures();
	int parseCli(int, char **);
	int runGame();
	void inventory();
	void listGames();
	uint32 matchCrc(uint32, char *, int);
	int v2IdGame();
	int v3IdGame();
	int v4IdGame(uint32 ver);
	void updateTimer();
	int getAppDir(char *appDir, unsigned int size);

	int setupV2Game(int ver, uint32 crc);
	int setupV3Game(int ver, uint32 crc);

	void newRoom(int n);
	void resetControllers();
	void interpretCycle();
	int playGame();

	void printItem(int n, int fg, int bg);
	int findItem();
	int showItems();
	void selectItems(int n);

	void allowSynthetic(bool);
	void processEvents();

	// Objects
	int showObjects();
	int decodeObjects(uint8 *mem, uint32 flen);
	int loadObjects(const char *fname);
	int allocObjects(int);
	void unloadObjects();
	const char *objectName(unsigned int);
	int objectGetLocation(unsigned int);
	void objectSetLocation(unsigned int, int);

	// Logic
	int decodeLogic(int);
	void unloadLogic(int);
	int runLogic(int);

	void debugConsole(int, int, const char *);
	int testIfCode(int);
	void executeAgiCommand(uint8, uint8 *);

	// View
private:

	void lSetCel(VtEntry *v, int n);
	void lSetLoop(VtEntry *v, int n);
	void updateView(VtEntry *v);

public:

	void setCel(VtEntry *, int);
	void setLoop(VtEntry *, int);
	void setView(VtEntry *, int);
	void startUpdate(VtEntry *);
	void stopUpdate(VtEntry *);
	void updateViewtable();
	void unloadView(int);
	int decodeView(int);
	void addToPic(int, int, int, int, int, int, int);
	void drawObj(int);
	bool isEgoView(const VtEntry *v);

	// Words
	int showWords();
	int loadWords(const char *);
	void unloadWords();
	int findWord(char *word, int *flen);
	void dictionaryWords(char *);

	// Motion
private:
	int checkStep(int delta, int step);
	int checkBlock(int x, int y);
	void changePos(VtEntry *v);
	void motionWander(VtEntry *v);
	void motionFollowEgo(VtEntry *v);
	void motionMoveObj(VtEntry *v);
	void checkMotion(VtEntry *v);
public:
	void checkAllMotions();
	void moveObj(VtEntry *);
	void inDestination(VtEntry *);
	void fixPosition(int);
	void updatePosition();
	int getDirection(int x0, int y0, int x, int y, int s);

	// Keyboard
	void initWords();
	void cleanInput();
	int doPollKeyboard();
	void cleanKeyboard();
	void handleKeys(int);
	void handleGetstring(int);
	int handleController(int);
	void getString(int, int, int, int);
	uint16 agiGetKeypress();
	int waitKey();
	int waitAnyKey();

	// Text
public:
	#define MAXWORDLEN 24

	typedef Common::String String;

	int messageBox(const char *);
	int selectionBox(const char *, const char **);
	void closeWindow(void);
	void drawWindow(int, int, int, int);
	void printText(const char *, int, int, int, int, int, int, bool checkerboard = false);
	void printTextConsole(const char *, int, int, int, int, int);
	int print(const char *, int, int, int);
	char *wordWrapString(char *, int *);
	char *agiSprintf(const char *);
	void writeStatus(void);
	void writePrompt(void);
	void clearLines(int, int, int);
	void flushLines(int, int);
	bool predictiveDialog(void);

private:
	void printStatus(const char *message, ...);
	void printText2(int l, const char *msg, int foff, int xoff, int yoff, int len, int fg, int bg, bool checkerboard = false);
	void blitTextbox(const char *p, int y, int x, int len);
	void eraseTextbox();
	char *safeStrcat(char *s, const char *t);
	void loadDict(void);
	bool matchWord(void);

	// Predictive dialog
	// TODO: Move this to a separate class
	char *_predictiveDictText;
	char **_predictiveDictLine;
	int32 _predictiveDictLineCount;
	char *_predictiveDictActLine;
	String _currentCode;
	String _currentWord;
	int _wordNumber;
	bool _predictiveDialogRunning;
public:
	char _predictiveResult[40];
};

} // End of namespace Agi

#endif /* AGI_H */