aboutsummaryrefslogtreecommitdiff
path: root/engines/mohawk/myst_state.cpp
blob: 782d83eaf375a06502b799a75162bcb82357a232 (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
/* 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.
 *
 */

#include "mohawk/cursors.h"
#include "mohawk/myst.h"
#include "mohawk/myst_state.h"

#include "common/config-manager.h"
#include "common/debug.h"
#include "common/serializer.h"
#include "common/system.h"
#include "common/textconsole.h"
#include "common/util.h"

#include "graphics/thumbnail.h"

namespace Mohawk {

MystSaveMetadata::MystSaveMetadata() {
	saveDay = 0;
	saveMonth = 0;
	saveYear = 0;
	saveHour = 0;
	saveMinute = 0;
	totalPlayTime = 0;
	autoSave = false;
}

bool MystSaveMetadata::sync(Common::Serializer &s) {
	static const Common::Serializer::Version kCurrentVersion = 2;

	if (!s.syncVersion(kCurrentVersion)) {
		return false;
	}

	s.syncAsByte(saveDay);
	s.syncAsByte(saveMonth);
	s.syncAsUint16LE(saveYear);
	s.syncAsByte(saveHour);
	s.syncAsByte(saveMinute);
	s.syncString(saveDescription);
	s.syncAsUint32LE(totalPlayTime);
	s.syncAsByte(autoSave, 2);

	return true;
}

const int MystGameState::kAutoSaveSlot = 0;

MystGameState::MystGameState(MohawkEngine_Myst *vm, Common::SaveFileManager *saveFileMan) :
		_vm(vm),
		_saveFileMan(saveFileMan) {

	reset();
}

void MystGameState::reset() {
	// Most of the variables are zero at game start.
	memset(&_globals, 0, sizeof(_globals));
	memset(&_myst, 0, sizeof(_myst));
	memset(&_channelwood, 0, sizeof(_channelwood));
	memset(&_mechanical, 0, sizeof(_mechanical));
	memset(&_selenitic, 0, sizeof(_selenitic));
	memset(&_stoneship, 0, sizeof(_stoneship));
	memset(&_mystReachableZipDests, 0, sizeof(_mystReachableZipDests));
	memset(&_channelwoodReachableZipDests, 0, sizeof(_channelwoodReachableZipDests));
	memset(&_mechReachableZipDests, 0, sizeof(_mechReachableZipDests));
	memset(&_seleniticReachableZipDests, 0, sizeof(_seleniticReachableZipDests));
	memset(&_stoneshipReachableZipDests, 0, sizeof(_stoneshipReachableZipDests));

	// Unknown
	_globals.u0 = 2;
	// Current Age / Stack - Start in Myst
	_globals.currentAge = kMystStart;
	_globals.heldPage = kNoPage;
	_globals.u1 = 1;
	_globals.ending = kDniNotVisited;

	_globals.zipMode = ConfMan.getBool("zip_mode");
	_globals.transitions = ConfMan.getBool("transition_mode");

	// Library Bookcase Door - Default to Up
	_myst.libraryBookcaseDoor = 1;
	// Dock Imager Numeric Selection - Default to 67
	_myst.imagerSelection = 67;
	// Dock Imager Active - Default to Active
	_myst.imagerActive = 1;
	// Stellar Observatory Lights - Default to On
	_myst.observatoryLights = 1;
	// First day of month
	_myst.observatoryDaySetting = 1;
	// Stellar Observatory sliders
	_myst.observatoryDaySlider = 90;
	_myst.observatoryMonthSlider = 90;
	_myst.observatoryYearSlider = 90;
	_myst.observatoryTimeSlider = 90;

	// Lighthouse Trapdoor State - Default to Locked
	_stoneship.trapdoorState = 2;
	// Lighthouse Chest Water State - Default to Full
	_stoneship.chestWaterState = 1;
}

MystGameState::~MystGameState() {
}

bool MystGameState::load(int slot) {
	if (!loadState(slot)) {
		return false;
	}

	loadMetadata(slot);

	// Set Channelwood elevator state to down, because we start on the lower level
	_channelwood.elevatorState = 0;

	// Switch us back to the intro stack, to the linking book
	_vm->changeToStack(kIntroStack, 5, 0, 0);

	// Set our default cursor
	_vm->_cursor->showCursor();
	if (_globals.heldPage == kNoPage)
		_vm->setMainCursor(kDefaultMystCursor);
	else if (_globals.heldPage < kRedLibraryPage) //A blue page is held
		_vm->setMainCursor(kBluePageCursor);
	else if (_globals.heldPage < kWhitePage) //A red page is held
		_vm->setMainCursor(kRedPageCursor);
	else
		_vm->setMainCursor(kWhitePageCursor);

	return true;
}

bool MystGameState::loadState(int slot) {
	Common::String filename = buildSaveFilename(slot);
	Common::InSaveFile *loadFile = _saveFileMan->openForLoading(filename);
	if (!loadFile) {
		return false;
	}

	debugC(kDebugSaveLoad, "Loading game from '%s'", filename.c_str());

	// First, let's make sure we're using a saved game file from this version of Myst
	// By checking length of file...
	int32 size = loadFile->size();
	if (size != 664 && size != 601) {
		warning("Incompatible saved game version");
		delete loadFile;
		return false;
	}

	Common::Serializer s(loadFile, nullptr);
	syncGameState(s, size == 664);
	delete loadFile;

	return true;
}

void MystGameState::loadMetadata(int slot) {
	// Open the metadata file
	Common::String filename = buildMetadataFilename(slot);
	Common::InSaveFile *metadataFile = _vm->getSaveFileManager()->openForLoading(filename);
	if (!metadataFile) {
		return;
	}

	debugC(kDebugSaveLoad, "Loading metadata from '%s'", filename.c_str());

	Common::Serializer m(metadataFile, nullptr);

	// Read the metadata file
	if (_metadata.sync(m)) {
		_vm->setTotalPlayTime(_metadata.totalPlayTime);
	}

	delete metadataFile;
}

bool MystGameState::save(int slot, const Common::String &desc, const Graphics::Surface *thumbnail, bool autoSave) {
	if (!saveState(slot)) {
		return false;
	}

	updateMetadateForSaving(desc, autoSave);

	return saveMetadata(slot, thumbnail);
}

bool MystGameState::saveState(int slot) {
	// Make sure we have the right extension
	Common::String filename = buildSaveFilename(slot);
	Common::OutSaveFile *saveFile = _saveFileMan->openForSaving(filename);
	if (!saveFile) {
		return false;
	}

	debugC(kDebugSaveLoad, "Saving game to '%s'", filename.c_str());

	Common::Serializer s(nullptr, saveFile);
	syncGameState(s, _vm->getFeatures() & GF_ME);
	saveFile->finalize();
	delete saveFile;

	return true;
}

Common::String MystGameState::buildSaveFilename(int slot) {
	return Common::String::format("myst-%03d.mys", slot);
}

Common::String MystGameState::buildMetadataFilename(int slot) {
	return Common::String::format("myst-%03d.mym", slot);
}

void MystGameState::updateMetadateForSaving(const Common::String &desc, bool autoSave) {
	// Update save creation info
	TimeDate t;
	g_system->getTimeAndDate(t);
	_metadata.saveYear = t.tm_year + 1900;
	_metadata.saveMonth = t.tm_mon + 1;
	_metadata.saveDay = t.tm_mday;
	_metadata.saveHour = t.tm_hour;
	_metadata.saveMinute = t.tm_min;
	_metadata.saveDescription = desc;
	_metadata.totalPlayTime = _vm->getTotalPlayTime();
	_metadata.autoSave = autoSave;
}

bool MystGameState::saveMetadata(int slot, const Graphics::Surface *thumbnail) {
	// Write the metadata to a separate file so that the save files
	// are still compatible with the original engine
	Common::String metadataFilename = buildMetadataFilename(slot);
	Common::OutSaveFile *metadataFile = _saveFileMan->openForSaving(metadataFilename);
	if (!metadataFile) {
		return false;
	}

	// Save the metadata
	Common::Serializer m(nullptr, metadataFile);
	_metadata.sync(m);

	// Append a thumbnail
	if (thumbnail) {
		Graphics::saveThumbnail(*metadataFile, *thumbnail);
	} else {
		Graphics::saveThumbnail(*metadataFile);
	}

	metadataFile->finalize();
	delete metadataFile;

	return true;
}

bool MystGameState::isAutoSaveAllowed() {
	// Open autosave slot and see if it an autosave
	// Autosaving will be enabled if it is an autosave or if there is no save in that slot

	Common::String dataFilename = buildSaveFilename(kAutoSaveSlot);
	Common::ScopedPtr<Common::InSaveFile> dataFile(g_system->getSavefileManager()->openForLoading(dataFilename));
	if (!dataFile) { // Cannot load non-meta file, enable autosave
		return true;
	}

	Common::String metaFilename = buildMetadataFilename(kAutoSaveSlot);
	Common::ScopedPtr<Common::InSaveFile> metadataFile(g_system->getSavefileManager()->openForLoading(metaFilename));
	if (!metadataFile) { // Can load non-meta file, but not metafile, could be a save from the original, disable autosave
		return false;
	}

	Common::Serializer m(metadataFile.get(), nullptr);

	// Read the metadata file
	Mohawk::MystSaveMetadata metadata;
	if (!metadata.sync(m)) { // the save in the autosave slot is corrupted, enable autosave
		return true;
	}

	return metadata.autoSave;
}

SaveStateDescriptor MystGameState::querySaveMetaInfos(int slot) {
	// Open the metadata file
	Common::String filename = buildMetadataFilename(slot);
	Common::InSaveFile *metadataFile = g_system->getSavefileManager()->openForLoading(filename);

	SaveStateDescriptor desc;
	desc.setWriteProtectedFlag(slot == kAutoSaveSlot);

	if (!metadataFile) {
		return desc;
	}

	Common::Serializer m(metadataFile, nullptr);

	// Read the metadata file
	Mohawk::MystSaveMetadata metadata;
	if (!metadata.sync(m)) {
		delete metadataFile;
		return desc;
	}

	// Set the save description
	desc.setDescription(metadata.saveDescription);
	desc.setSaveDate(metadata.saveYear, metadata.saveMonth, metadata.saveDay);
	desc.setSaveTime(metadata.saveHour, metadata.saveMinute);
	desc.setPlayTime(metadata.totalPlayTime);
	if (metadata.autoSave) // Allow non-saves to be deleted, but not autosaves
		desc.setDeletableFlag(slot != kAutoSaveSlot);

	Graphics::Surface *thumbnail;
	if (!Graphics::loadThumbnail(*metadataFile, thumbnail)) {
		delete metadataFile;
		return desc;
	}
	desc.setThumbnail(thumbnail);

	delete metadataFile;

	return desc;
}

Common::String MystGameState::querySaveDescription(int slot) {
	// Open the metadata file
	Common::String filename = buildMetadataFilename(slot);
	Common::InSaveFile *metadataFile = g_system->getSavefileManager()->openForLoading(filename);
	if (!metadataFile) {
		return "";
	}

	Common::Serializer m(metadataFile, nullptr);

	// Read the metadata file
	Mohawk::MystSaveMetadata metadata;
	if (!metadata.sync(m)) {
		delete metadataFile;
		return "";
	}

	delete metadataFile;

	return metadata.saveDescription;
}

void MystGameState::syncGameState(Common::Serializer &s, bool isME) {
	// Globals first
	s.syncAsUint16LE(_globals.u0);
	s.syncAsUint16LE(_globals.currentAge);
	s.syncAsUint16LE(_globals.heldPage);
	s.syncAsUint16LE(_globals.u1);
	s.syncAsUint16LE(_globals.transitions);
	s.syncAsUint16LE(_globals.zipMode);
	s.syncAsUint16LE(_globals.redPagesInBook);
	s.syncAsUint16LE(_globals.bluePagesInBook);

	// Onto Myst
	if (isME) {
		s.syncAsUint32LE(_myst.cabinMarkerSwitch);
		s.syncAsUint32LE(_myst.clockTowerMarkerSwitch);
		s.syncAsUint32LE(_myst.dockMarkerSwitch);
		s.syncAsUint32LE(_myst.poolMarkerSwitch);
		s.syncAsUint32LE(_myst.gearsMarkerSwitch);
		s.syncAsUint32LE(_myst.generatorMarkerSwitch);
		s.syncAsUint32LE(_myst.observatoryMarkerSwitch);
		s.syncAsUint32LE(_myst.rocketshipMarkerSwitch);
	} else {
		s.syncAsByte(_myst.cabinMarkerSwitch);
		s.syncAsByte(_myst.clockTowerMarkerSwitch);
		s.syncAsByte(_myst.dockMarkerSwitch);
		s.syncAsByte(_myst.poolMarkerSwitch);
		s.syncAsByte(_myst.gearsMarkerSwitch);
		s.syncAsByte(_myst.generatorMarkerSwitch);
		s.syncAsByte(_myst.observatoryMarkerSwitch);
		s.syncAsByte(_myst.rocketshipMarkerSwitch);
	}

	s.syncAsUint16LE(_myst.greenBookOpenedBefore);
	s.syncAsUint16LE(_myst.shipFloating);
	s.syncAsUint16LE(_myst.cabinValvePosition);
	s.syncAsUint16LE(_myst.clockTowerHourPosition);
	s.syncAsUint16LE(_myst.clockTowerMinutePosition);
	s.syncAsUint16LE(_myst.gearsOpen);
	s.syncAsUint16LE(_myst.clockTowerBridgeOpen);
	s.syncAsUint16LE(_myst.generatorBreakers);
	s.syncAsUint16LE(_myst.generatorButtons);
	s.syncAsUint16LE(_myst.generatorVoltage);
	s.syncAsUint16LE(_myst.libraryBookcaseDoor);
	s.syncAsUint16LE(_myst.imagerSelection);
	s.syncAsUint16LE(_myst.imagerActive);
	s.syncAsUint16LE(_myst.imagerWaterErased);
	s.syncAsUint16LE(_myst.imagerMountainErased);
	s.syncAsUint16LE(_myst.imagerAtrusErased);
	s.syncAsUint16LE(_myst.imagerMarkerErased);
	s.syncAsUint16LE(_myst.towerRotationAngle);
	s.syncAsUint16LE(_myst.courtyardImageBoxes);
	s.syncAsUint16LE(_myst.cabinPilotLightLit);
	s.syncAsUint16LE(_myst.observatoryDaySetting);
	s.syncAsUint16LE(_myst.observatoryLights);
	s.syncAsUint16LE(_myst.observatoryMonthSetting);
	s.syncAsUint16LE(_myst.observatoryTimeSetting);
	s.syncAsUint16LE(_myst.observatoryYearSetting);
	s.syncAsUint16LE(_myst.observatoryDayTarget);
	s.syncAsUint16LE(_myst.observatoryMonthTarget);
	s.syncAsUint16LE(_myst.observatoryTimeTarget);
	s.syncAsUint16LE(_myst.observatoryYearTarget);
	s.syncAsUint16LE(_myst.cabinSafeCombination);
	s.syncAsUint16LE(_myst.treePosition);
	s.syncAsUint32LE(_myst.treeLastMoveTime);

	for (int i = 0; i < 5; i++)
		s.syncAsUint16LE(_myst.rocketSliderPosition[i]);

	s.syncAsUint16LE(_myst.observatoryDaySlider);
	s.syncAsUint16LE(_myst.observatoryMonthSlider);
	s.syncAsUint16LE(_myst.observatoryYearSlider);
	s.syncAsUint16LE(_myst.observatoryTimeSlider);

	// Channelwood
	if (isME) {
		s.syncAsUint32LE(_channelwood.waterPumpBridgeState);
		s.syncAsUint32LE(_channelwood.elevatorState);
		s.syncAsUint32LE(_channelwood.stairsLowerDoorState);
		s.syncAsUint32LE(_channelwood.pipeState);
	} else {
		s.syncAsByte(_channelwood.waterPumpBridgeState);
		s.syncAsByte(_channelwood.elevatorState);
		s.syncAsByte(_channelwood.stairsLowerDoorState);
		s.syncAsByte(_channelwood.pipeState);
	}

	s.syncAsUint16LE(_channelwood.waterValveStates);
	s.syncAsUint16LE(_channelwood.holoprojectorSelection);
	s.syncAsUint16LE(_channelwood.stairsUpperDoorState);

	// Mechanical

	if (isME)
		s.syncAsUint32LE(_mechanical.achenarCrateOpened);
	else
		s.syncAsByte(_mechanical.achenarCrateOpened);

	s.syncAsUint16LE(_mechanical.achenarPanelState);
	s.syncAsUint16LE(_mechanical.sirrusPanelState);
	s.syncAsUint16LE(_mechanical.staircaseState);
	s.syncAsUint16LE(_mechanical.elevatorRotation);

	for (int i = 0; i < 4; i++)
		s.syncAsUint16LE(_mechanical.codeShape[i]);

	// Selenitic

	if (isME) {
		s.syncAsUint32LE(_selenitic.emitterEnabledWater);
		s.syncAsUint32LE(_selenitic.emitterEnabledVolcano);
		s.syncAsUint32LE(_selenitic.emitterEnabledClock);
		s.syncAsUint32LE(_selenitic.emitterEnabledCrystal);
		s.syncAsUint32LE(_selenitic.emitterEnabledWind);
		s.syncAsUint32LE(_selenitic.soundReceiverOpened);
		s.syncAsUint32LE(_selenitic.tunnelLightsSwitchedOn);
	} else {
		s.syncAsByte(_selenitic.emitterEnabledWater);
		s.syncAsByte(_selenitic.emitterEnabledVolcano);
		s.syncAsByte(_selenitic.emitterEnabledClock);
		s.syncAsByte(_selenitic.emitterEnabledCrystal);
		s.syncAsByte(_selenitic.emitterEnabledWind);
		s.syncAsByte(_selenitic.soundReceiverOpened);
		s.syncAsByte(_selenitic.tunnelLightsSwitchedOn);
	}

	s.syncAsUint16LE(_selenitic.soundReceiverCurrentSource);

	for (byte i = 0; i < 5; i++)
		s.syncAsUint16LE(_selenitic.soundReceiverPositions[i]);

	for (byte i = 0; i < 5; i++)
		s.syncAsUint16LE(_selenitic.soundLockSliderPositions[i]);

	// Stoneship

	if (isME) {
		s.syncAsUint32LE(_stoneship.lightState);
	} else {
		s.syncAsByte(_stoneship.lightState);
	}

	s.syncAsUint16LE(_stoneship.sideDoorOpened);
	s.syncAsUint16LE(_stoneship.pumpState);
	s.syncAsUint16LE(_stoneship.trapdoorState);
	s.syncAsUint16LE(_stoneship.chestWaterState);
	s.syncAsUint16LE(_stoneship.chestValveState);
	s.syncAsUint16LE(_stoneship.chestOpenState);
	s.syncAsUint16LE(_stoneship.trapdoorKeyState);
	s.syncAsUint32LE(_stoneship.generatorDuration);
	s.syncAsUint16LE(_stoneship.generatorPowerAvailable);
	s.syncAsUint32LE(_stoneship.generatorDepletionTime);

	// D'ni
	s.syncAsUint16LE(_globals.ending);

	// Already visited zip destinations

	for (byte i = 0; i < 41; i++)
		s.syncAsUint16LE(_mystReachableZipDests[i]);

	for (byte i = 0; i < 41; i++)
		s.syncAsUint16LE(_channelwoodReachableZipDests[i]);

	for (byte i = 0; i < 41; i++)
		s.syncAsUint16LE(_mechReachableZipDests[i]);

	for (byte i = 0; i < 41; i++)
		s.syncAsUint16LE(_seleniticReachableZipDests[i]);

	for (byte i = 0; i < 41; i++)
		s.syncAsUint16LE(_stoneshipReachableZipDests[i]);

	if ((isME && s.bytesSynced() != 664) || (!isME && s.bytesSynced() != 601))
		warning("Unexpected File Position 0x%03X At End of Save/Load", s.bytesSynced());
}

void MystGameState::deleteSave(int slot) {
	Common::String filename = buildSaveFilename(slot);
	Common::String metadataFilename = buildMetadataFilename(slot);

	debugC(kDebugSaveLoad, "Deleting save file \'%s\'", filename.c_str());

	g_system->getSavefileManager()->removeSavefile(filename);
	g_system->getSavefileManager()->removeSavefile(metadataFilename);
}

void MystGameState::addZipDest(MystStack stack, uint16 view) {
	ZipDests *zipDests = nullptr;

	// The demo has no zip dest storage
	if (_vm->getFeatures() & GF_DEMO)
		return;

	// Select stack
	switch (stack) {
	case kChannelwoodStack:
		zipDests = &_channelwoodReachableZipDests;
		break;
	case kMechanicalStack:
		zipDests = &_mechReachableZipDests;
		break;
	case kMystStack:
		zipDests = &_mystReachableZipDests;
		break;
	case kSeleniticStack:
		zipDests = &_seleniticReachableZipDests;
		break;
	case kStoneshipStack:
		zipDests = &_stoneshipReachableZipDests;
		break;
	default:
		error("Stack does not have zip destination storage");
	}

	// Check if not already in list
	int16 firstEmpty = -1;
	bool found = false;
	for (uint i = 0; i < ARRAYSIZE(*zipDests); i++) {
		if (firstEmpty == -1 && (*zipDests)[i] == 0)
			firstEmpty = i;

		if ((*zipDests)[i] == view)
			found = true;
	}

	// Add view to array
	if (!found && firstEmpty >= 0)
		(*zipDests)[firstEmpty] = view;
}

bool MystGameState::isReachableZipDest(MystStack stack, uint16 view) {
	// Zip mode enabled
	if (!_globals.zipMode)
		return false;

	// The demo has no zip dest storage
	if (_vm->getFeatures() & GF_DEMO)
		return false;

	// Select stack
	ZipDests *zipDests;
	switch (stack) {
	case kChannelwoodStack:
		zipDests = &_channelwoodReachableZipDests;
		break;
	case kMechanicalStack:
		zipDests = &_mechReachableZipDests;
		break;
	case kMystStack:
		zipDests = &_mystReachableZipDests;
		break;
	case kSeleniticStack:
		zipDests = &_seleniticReachableZipDests;
		break;
	case kStoneshipStack:
		zipDests = &_stoneshipReachableZipDests;
		break;
	default:
		error("Stack does not have zip destination storage");
	}

	// Check if in list
	for (uint i = 0; i < ARRAYSIZE(*zipDests); i++) {
		if ((*zipDests)[i] == view)
			return true;
	}

	return false;
}

} // End of namespace Mohawk