aboutsummaryrefslogtreecommitdiff
path: root/engines/made/database.cpp
blob: 3497b5b46f7502b5d58615cdde1e64945043ff99 (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
/* 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.
 *
 * $URL$
 * $Id$
 *
 */

#include "common/system.h"
#include "common/endian.h"
#include "common/util.h"
#include "common/savefile.h"

#include "made/database.h"

namespace Made {

/*
	Class types:
	  0x7FFF  byte array
	  0x7FFE  word array
	< 0x7FFE  object
*/

Object::Object() : _objData(NULL), _freeData(false) {
}

Object::~Object() {
	if (_freeData && _objData)
		delete[] _objData;
}

const char *Object::getString() {
	if (getClass() == 0x7FFF)
		return (const char*)getData();
	else
		return NULL;
}

void Object::setString(const char *str) {
	if (getClass() == 0x7FFF) {
		char *objStr = (char*)getData();
		if (str)
			strncpy(objStr, str, getSize());
		else
			objStr[0] = '\0';
	}
}

bool Object::isObject() {
	return getClass() < 0x7FFE;
}

bool Object::isVector() {
	return getClass() == 0x7FFF;
}

int16 Object::getVectorSize() {
	if (getClass() == 0x7FFF || getClass() == 0x7FFE) {
		return getSize();
	} else if (getClass() < 0x7FFE) {
		return getCount1() + getCount2();
	} else {
		// should never reach here
		error("Unknown object class");
		return 0;
	}
}

int16 Object::getVectorItem(int16 index) {
	if (getClass() == 0x7FFF) {
		byte *vector = (byte*)getData();
		return vector[index];
	} else if (getClass() <= 0x7FFE) {
		int16 *vector = (int16*)getData();
		return READ_LE_UINT16(&vector[index]);
	} else {
		// should never reach here
		error("Unknown object class");
		return 0;
	}
}

void Object::setVectorItem(int16 index, int16 value) {
	if (getClass() == 0x7FFF) {
		byte *vector = (byte*)getData();
		vector[index] = value;
	} else if (getClass() <= 0x7FFE) {
		int16 *vector = (int16*)getData();
		WRITE_LE_UINT16(&vector[index], value);
	}
}

void Object::dump(const char *filename) {
	/*
	FILE *o = fopen(filename, "wb");
	fwrite(_objData, _objSize, 1, o);
	fclose(o);
	*/
}

int ObjectV2::load(Common::SeekableReadStream &source) {

	if (_freeData && _objData)
		delete[] _objData;

	_freeData = true;
	
	byte header[4];
	source.read(header, 4);
	
	uint16 type = READ_LE_UINT16(header);
	if (type == 0x7FFF) {
		_objSize = READ_LE_UINT16(header + 2);
	} else if (type == 0x7FFE) {
		_objSize = READ_LE_UINT16(header + 2) * 2;
	} else if (type < 0x7FFE) {
		byte count1 = header[2];
		byte count2 = header[3];
		_objSize = (count1 + count2) * 2;
	}
	_objSize += 4;
	_objData = new byte[_objSize];
	memcpy(_objData, header, 4);
	source.read(_objData + 4, _objSize - 4);

	return _objSize;

}

int ObjectV2::load(byte *source) {
	// Not implemented/used for version 2 objects
	return 0;
}

int ObjectV2::save(Common::WriteStream &dest) {
	dest.write(_objData, _objSize);
	return 0;
}

uint16 ObjectV2::getFlags() {
	return 1;
}

uint16 ObjectV2::getClass() {
	return READ_LE_UINT16(_objData);
}

uint16 ObjectV2::getSize() {
	return READ_LE_UINT16(_objData + 2);
}

byte ObjectV2::getCount1() {
	return _objData[2];
}

byte ObjectV2::getCount2() {
	return _objData[3];
}

byte *ObjectV2::getData() {
	return _objData + 4;
}

int ObjectV3::load(Common::SeekableReadStream &source) {

	_freeData = true;
	source.readUint16LE(); // skip flags
	uint16 type = source.readUint16LE();
	if (type == 0x7FFF) {
		_objSize = source.readUint16LE();
	} else if (type == 0x7FFE) {
		_objSize = source.readUint16LE() * 2;
	} else if (type < 0x7FFE) {
		byte count1 = source.readByte();
		byte count2 = source.readByte();
		_objSize = (count1 + count2) * 2;
	}
	source.seek(-6, SEEK_CUR);
	_objSize += 6;
	_objData = new byte[_objSize];
	source.read(_objData, _objSize);
	return _objSize;

}

int ObjectV3::load(byte *source) {
	_objData = source;
	_freeData = false;
	if (getClass() < 0x7FFE) {
		_objSize = (getCount1() + getCount2()) * 2;
	} else {
		_objSize = getSize();
	}
	_objSize += 6;
	return _objSize;
}

int ObjectV3::save(Common::WriteStream &dest) {
	// Not implemented/used for version 3 objects
	return 0;
}

uint16 ObjectV3::getFlags() {
	return READ_LE_UINT16(_objData);
}

uint16 ObjectV3::getClass() {
	return READ_LE_UINT16(_objData + 2);
}

uint16 ObjectV3::getSize() {
	return READ_LE_UINT16(_objData + 4);
}

byte ObjectV3::getCount1() {
	return _objData[4];
}

byte ObjectV3::getCount2() {
	return _objData[5];
}

byte *ObjectV3::getData() {
	return _objData + 6;
}



GameDatabase::GameDatabase(MadeEngine *vm) : _vm(vm) {
}

GameDatabase::~GameDatabase() {
	if (_gameState)
		delete[] _gameState;
}

void GameDatabase::open(const char *filename) {
	debug(1, "GameDatabase::open() Loading from %s", filename);
	Common::File fd;
	if (!fd.open(filename))
		error("GameDatabase::open() Could not open %s", filename);
	load(fd);
	fd.close();
}

void GameDatabase::openFromRed(const char *redFilename, const char *filename) {
	debug(1, "GameDatabase::openFromRed() Loading from %s->%s", redFilename, filename);
	Common::MemoryReadStream *fileS = RedReader::loadFromRed(redFilename, filename);
	if (!fileS)
		error("GameDatabase::openFromRed() Could not load %s from %s", filename, redFilename);
	load(*fileS);
	delete fileS;
}

int16 GameDatabase::getVar(int16 index) {
	return (int16)READ_LE_UINT16(_gameState + index * 2);
}

void GameDatabase::setVar(int16 index, int16 value) {
	WRITE_LE_UINT16(_gameState + index * 2, value);
}

const char *GameDatabase::getObjectString(int16 index) {
	Object *obj = getObject(index);
	if (obj)
		return obj->getString();
	else
		return "";
}

void GameDatabase::setObjectString(int16 index, const char *str) {
	Object *obj = getObject(index);
	if (obj)
		obj->setString(str);
}

int16 GameDatabase::getObjectProperty(int16 objectIndex, int16 propertyId) {

	if (objectIndex == 0)
		return 0;

	int16 propertyFlag;
	int16 *property = findObjectProperty(objectIndex, propertyId, propertyFlag);

	if (property) {
		return (int16)READ_LE_UINT16(property);
	} else {
		return 0;
	}

}

int16 GameDatabase::setObjectProperty(int16 objectIndex, int16 propertyId, int16 value) {

	if (objectIndex == 0)
		return 0;

	int16 propertyFlag;
	int16 *property = findObjectProperty(objectIndex, propertyId, propertyFlag);

	if (property) {
		if (propertyFlag == 1) {
			WRITE_LE_UINT16(property, value);
		} else {
			warning("GameDatabase::setObjectProperty(%04X, %04X, %04X) Trying to set constant property\n",
				objectIndex, propertyId, value);
		}
		return value;
	} else {
		return 0;
	}

}

void GameDatabase::dumpObject(int16 index) {
	Object *obj = getObject(index);
	char fn[512];
	sprintf(fn, "obj%04X.0", index);
	obj->dump(fn);
}


/* GameDatabaseV2 */

GameDatabaseV2::GameDatabaseV2(MadeEngine *vm) : GameDatabase(vm), _gameText(NULL) {
}

GameDatabaseV2::~GameDatabaseV2() {
	if (_gameText)
		delete[] _gameText;
}

void GameDatabaseV2::load(Common::SeekableReadStream &sourceS) {
	
	// TODO: Read/verifiy header
	
	sourceS.seek(0x1C);
	
	uint32 textOffs = sourceS.readUint16LE() * 512;
	uint16 objectCount = sourceS.readUint16LE();
	uint16 varObjectCount = sourceS.readUint16LE();
	_gameStateSize = sourceS.readUint16LE() * 2;
	sourceS.readUint16LE(); // unknown
	uint32 objectsOffs = sourceS.readUint16LE() * 512;
	sourceS.readUint16LE(); // unknown
	_mainCodeObjectIndex = sourceS.readUint16LE();
	sourceS.readUint16LE(); // unknown
	uint32 objectsSize = sourceS.readUint32LE() * 2;
	uint32 textSize = objectsOffs - textOffs;

	debug(2, "textOffs = %08X; textSize = %08X; objectCount = %d; varObjectCount = %d; gameStateSize = %d; objectsOffs = %08X; objectsSize = %d\n", textOffs, textSize, objectCount, varObjectCount, _gameStateSize, objectsOffs, objectsSize);

	_gameState = new byte[_gameStateSize + 2];
	memset(_gameState, 0, _gameStateSize + 2);
	setVar(1, objectCount);

	sourceS.seek(textOffs);
	_gameText = new char[textSize];
	sourceS.read(_gameText, textSize);
	// "Decrypt" the text data
	for (uint32 i = 0; i < textSize; i++)
		_gameText[i] += 0x1E;

	sourceS.seek(objectsOffs);

	for (uint32 i = 0; i < objectCount; i++) {
		Object *obj = new ObjectV2();
		int objSize = obj->load(sourceS);
		// objects are aligned on 2-byte-boundaries, skip unused bytes
		sourceS.skip(objSize % 2);
		_objects.push_back(obj);
	}
	
}

bool GameDatabaseV2::getSavegameDescription(const char *filename, Common::String &description) {
	// Not used in version 2 games
	return false;
}

int16 GameDatabaseV2::savegame(const char *filename, const char *description, int16 version) {
	Common::OutSaveFile *out;
	int16 result = 0;
	if (!(out = g_system->getSavefileManager()->openForSaving(filename))) {
		warning("Can't create file '%s', game not saved", filename);
		return 6;
	}
	// Variable 0 is not saved
	out->write(_gameState + 2, _gameStateSize - 2);
	for (uint i = 0; i < _objects.size(); i++)
		_objects[i]->save(*out);
	delete out;
	return result;
}

int16 GameDatabaseV2::loadgame(const char *filename, int16 version) {
	Common::InSaveFile *in;
	int16 result = 0;
	if (!(in = g_system->getSavefileManager()->openForLoading(filename))) {
		warning("Can't open file '%s', game not loaded", filename);
		return 1;
	}
	// Variable 0 is not loaded
	in->read(_gameState + 2, _gameStateSize - 2);
	for (uint i = 0; i < _objects.size(); i++) {
		_objects[i]->load(*in);
	}
	delete in;
	return result;
}

int16 *GameDatabaseV2::findObjectProperty(int16 objectIndex, int16 propertyId, int16 &propertyFlag) {
	Object *obj = getObject(objectIndex);

	int16 *prop = (int16*)obj->getData();
	byte count1 = obj->getCount1();
	byte count2 = obj->getCount2();

	int16 *propPtr1 = prop + count1;
	int16 *propPtr2 = prop + count2;

	// First see if the property exists in the given object
	while (count2--) {
		if ((READ_LE_UINT16(prop) & 0x7FFF) == propertyId) {
			propertyFlag = obj->getFlags() & 1;
			return propPtr1;
		}
		prop++;
		propPtr1++;
	}

	// Now check in the object hierarchy of the given object
	int16 parentObjectIndex = obj->getClass();
	if (parentObjectIndex == 0) {
		return NULL;
	}

	while (parentObjectIndex != 0) {

		obj = getObject(parentObjectIndex);

		prop = (int16*)obj->getData();
		count1 = obj->getCount1();
		count2 = obj->getCount2();

		propPtr1 = propPtr2 + count1 - count2;
		int16 *propertyPtr = prop + count1;

		while (count2--) {
			if ((READ_LE_UINT16(prop) & 0x8000) == 0) {
				if ((READ_LE_UINT16(prop) & 0x7FFF) == propertyId) {
					propertyFlag = obj->getFlags() & 1;
					return propPtr1;
				} else {
					propPtr1++;
				}
			} else {
				if ((READ_LE_UINT16(prop) & 0x7FFF) == propertyId) {
					propertyFlag = obj->getFlags() & 1;
					return propertyPtr;
				}
			}
			prop++;
			propertyPtr++;
		}

		parentObjectIndex = obj->getClass();

	}

	debug(1, "findObjectProperty(%04X, %04X) Property not found", objectIndex, propertyId);
	return NULL;

}

const char *GameDatabaseV2::getString(uint16 offset) {
	return (const char*)&_gameText[offset * 4];
}


/* GameDatabaseV3 */

GameDatabaseV3::GameDatabaseV3(MadeEngine *vm) : GameDatabase(vm) {
}

void GameDatabaseV3::load(Common::SeekableReadStream &sourceS) {

	// TODO: Read/verifiy header

	sourceS.seek(0x1E);

	uint32 objectIndexOffs = sourceS.readUint32LE();
	uint16 objectCount = sourceS.readUint16LE();
	uint32 gameStateOffs = sourceS.readUint32LE();
	_gameStateSize = sourceS.readUint32LE();
	uint32 objectsOffs = sourceS.readUint32LE();
	uint32 objectsSize = sourceS.readUint32LE();
	_mainCodeObjectIndex = sourceS.readUint16LE();

	debug(2, "objectIndexOffs = %08X; objectCount = %d; gameStateOffs = %08X; gameStateSize = %d; objectsOffs = %08X; objectsSize = %d\n", objectIndexOffs, objectCount, gameStateOffs, _gameStateSize, objectsOffs, objectsSize);

	_gameState = new byte[_gameStateSize];
	sourceS.seek(gameStateOffs);
	sourceS.read(_gameState, _gameStateSize);

	Common::Array<uint32> objectOffsets;
	sourceS.seek(objectIndexOffs);
	for (uint32 i = 0; i < objectCount; i++)
		objectOffsets.push_back(sourceS.readUint32LE());

	for (uint32 i = 0; i < objectCount; i++) {
		Object *obj = new ObjectV3();

		// The LSB indicates if it's a constant or variable object.
		// Constant objects are loaded from disk, while variable objects exist
		// in the _gameState buffer.

		if (objectOffsets[i] & 1) {
			sourceS.seek(objectsOffs + objectOffsets[i] - 1);
			obj->load(sourceS);
		} else {
			obj->load(_gameState + objectOffsets[i]);
		}
		_objects.push_back(obj);
	}

}

bool GameDatabaseV3::getSavegameDescription(const char *filename, Common::String &description) {
	Common::InSaveFile *in;
	char desc[64];
	if (!(in = g_system->getSavefileManager()->openForLoading(filename))) {
		return false;
	}
	in->skip(4); // TODO: Verify marker 'SGAM'
	in->skip(4); // TODO: Verify size
	in->skip(2); // TODO: Verify version
	in->read(desc, 64);
	description = desc;
	delete in;
	return true;
}

int16 GameDatabaseV3::savegame(const char *filename, const char *description, int16 version) {
	Common::OutSaveFile *out;
	char desc[64];
	int16 result = 0;
	uint32 size = 4 + 4 + 2 + _gameStateSize;
	if (!(out = g_system->getSavefileManager()->openForSaving(filename))) {
		warning("Can't create file '%s', game not saved", filename);
		return 6;
	}
	strncpy(desc, description, 64);
	out->writeUint32BE(MKID_BE('SGAM'));
	out->writeUint32LE(size);
	out->writeUint16LE(version);
	out->write(desc, 64);
	out->write(_gameState, _gameStateSize);
	delete out;
	return result;
}

int16 GameDatabaseV3::loadgame(const char *filename, int16 version) {
	Common::InSaveFile *in;
	int16 result = 0;
	//uint32 expectedSize = 4 + 4 + 2 + _gameStateSize;
	if (!(in = g_system->getSavefileManager()->openForLoading(filename))) {
		warning("Can't open file '%s', game not loaded", filename);
		return 1;
	}
	in->skip(4); // TODO: Verify marker 'SGAM'
	in->skip(4); // TODO: Verify size
	in->skip(2); // TODO: Verify version
	in->skip(64); // skip savegame description
	in->read(_gameState, _gameStateSize);
	delete in;
	return result;
}

int16 *GameDatabaseV3::findObjectProperty(int16 objectIndex, int16 propertyId, int16 &propertyFlag) {
	Object *obj = getObject(objectIndex);

	int16 *prop = (int16*)obj->getData();
	byte count1 = obj->getCount1();
	byte count2 = obj->getCount2();

	int16 *propPtr1 = prop + count1;
	int16 *propPtr2 = prop + count2;

	// First see if the property exists in the given object
	while (count2-- > 0) {
		if ((READ_LE_UINT16(prop) & 0x3FFF) == propertyId) {
			if (READ_LE_UINT16(prop) & 0x4000) {
				propertyFlag = 1;
				return (int16*)_gameState + READ_LE_UINT16(propPtr1);
			} else {
				propertyFlag = obj->getFlags() & 1;
				return propPtr1;
			}
		}
		prop++;
		propPtr1++;
	}

	// Now check in the object hierarchy of the given object
	int16 parentObjectIndex = obj->getClass();
	if (parentObjectIndex == 0) {
		return NULL;
	}

	while (parentObjectIndex != 0) {

		obj = getObject(parentObjectIndex);

		prop = (int16*)obj->getData();
		count1 = obj->getCount1();
		count2 = obj->getCount2();

		propPtr1 = propPtr2 + count1 - count2;
		int16 *propertyPtr = prop + count1;

		while (count2-- > 0) {
			if (!(READ_LE_UINT16(prop) & 0x8000)) {
				if ((READ_LE_UINT16(prop) & 0x3FFF) == propertyId) {
					if (READ_LE_UINT16(prop) & 0x4000) {
						propertyFlag = 1;
						return (int16*)_gameState + READ_LE_UINT16(propPtr1);
					} else {
						propertyFlag = obj->getFlags() & 1;
						return propPtr1;
					}
				} else {
					propPtr1++;
				}
			} else {
				if ((READ_LE_UINT16(prop) & 0x3FFF) == propertyId) {
					if (READ_LE_UINT16(prop) & 0x4000) {
						propertyFlag = 1;
						return (int16*)_gameState + READ_LE_UINT16(propertyPtr);
					} else {
						propertyFlag = obj->getFlags() & 1;
						return propertyPtr;
					}
				}
			}
			prop++;
			propertyPtr++;
		}

		parentObjectIndex = obj->getClass();

	}

	return NULL;
	
}

const char *GameDatabaseV3::getString(uint16 offset) {
	// Not used in version 3 games
	return NULL;
}

} // End of namespace Made