aboutsummaryrefslogtreecommitdiff
path: root/engines/saga/saga.cpp
blob: 763e3a0398b2639db4d7070833298e6f7c6d5656 (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
/* 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 "common/file.h"
#include "common/fs.h"
#include "common/config-manager.h"
#include "common/system.h"
#include "common/events.h"

#include "audio/mixer.h"

#include "saga/saga.h"

#include "saga/resource.h"
#include "saga/gfx.h"
#include "saga/render.h"
#include "saga/actor.h"
#include "saga/animation.h"
#include "saga/console.h"
#include "saga/events.h"
#include "saga/font.h"
#include "saga/interface.h"
#include "saga/isomap.h"
#include "saga/puzzle.h"
#include "saga/script.h"
#include "saga/scene.h"
#include "saga/sndres.h"
#include "saga/sprite.h"
#include "saga/sound.h"
#include "saga/music.h"
#include "saga/palanim.h"
#include "saga/objectmap.h"

namespace Saga {

#define MAX_TIME_DELTA 100

SagaEngine::SagaEngine(OSystem *syst, const SAGAGameDescription *gameDesc)
	: Engine(syst), _gameDescription(gameDesc), _rnd("saga") {

	_framesEsc = 0;

	_globalFlags = 0;
	memset(_ethicsPoints, 0, sizeof(_ethicsPoints));
	_spiritualBarometer = 0;

	_soundVolume = 0;
	_musicVolume = 0;
	_speechVolume = 0;
	_subtitlesEnabled = false;
	_voicesEnabled = false;
	_voiceFilesExist = false;
	_readingSpeed = 0;

	_copyProtection = false;
	_musicWasPlaying = false;
	_hasITESceneSubstitutes = false;

	_sndRes = NULL;
	_sound = NULL;
	_music = NULL;
	_anim = NULL;
	_render = NULL;
	_isoMap = NULL;
	_gfx = NULL;
	_script = NULL;
	_actor = NULL;
	_font = NULL;
	_sprite = NULL;
	_scene = NULL;
	_interface = NULL;
	_console = NULL;
	_events = NULL;
	_palanim = NULL;
	_puzzle = NULL;
	_resource = NULL;

	_previousTicks = 0;

	_saveFilesCount = 0;

	_leftMouseButtonPressed = _rightMouseButtonPressed = false;
	_mouseClickCount = 0;

	_gameNumber = 0;

	_frameCount = 0;

	const Common::FSNode gameDataDir(ConfMan.get("path"));

	// The Linux version of Inherit the Earth puts all data files in an
	// 'itedata' sub-directory, except for voices.rsc
	SearchMan.addSubDirectoryMatching(gameDataDir, "itedata");

	// The Windows version of Inherit the Earth puts various data files in
	// other subdirectories.
	SearchMan.addSubDirectoryMatching(gameDataDir, "graphics");
	SearchMan.addSubDirectoryMatching(gameDataDir, "music");
	SearchMan.addSubDirectoryMatching(gameDataDir, "sound");

	// Location of Miles audio files (sample.ad and sample.opl) in IHNM
	SearchMan.addSubDirectoryMatching(gameDataDir, "drivers");

	// The Multi-OS version puts the voices file in the root directory of
	// the CD. The rest of the data files are in game/itedata
	SearchMan.addSubDirectoryMatching(gameDataDir, "game/itedata");

	// Mac CD Wyrmkeep
	SearchMan.addSubDirectoryMatching(gameDataDir, "patch");

	// Dinotopia
	SearchMan.addSubDirectoryMatching(gameDataDir, "smack");

	// FTA2
	SearchMan.addSubDirectoryMatching(gameDataDir, "video");

	_displayClip.left = _displayClip.top = 0;
}

SagaEngine::~SagaEngine() {
	if (_scene != NULL) {
		if (_scene->isSceneLoaded()) {
			_scene->endScene();
		}
	}

	if (getGameId() == GID_ITE) {
		delete _isoMap;
		_isoMap = NULL;

		delete _puzzle;
		_puzzle = NULL;
	}

	delete _sndRes;
	_sndRes = NULL;

	delete _events;
	_events = NULL;

	if (!isSaga2()) {
		delete _font;
		_font = NULL;

		delete _sprite;
		_sprite = NULL;
	}

	delete _anim;
	_anim = NULL;

	delete _script;
	_script = NULL;

	if (!isSaga2()) {
		delete _interface;
		_interface = NULL;
	}

	delete _actor;
	_actor = NULL;

	delete _palanim;
	_palanim = NULL;

	delete _scene;
	_scene = NULL;

	delete _render;
	_render = NULL;

	delete _music;
	_music = NULL;

	delete _sound;
	_sound = NULL;

	delete _gfx;
	_gfx = NULL;

	delete _console;
	_console = NULL;

	delete _resource;
	_resource = NULL;
}

Common::Error SagaEngine::run() {
	setTotalPlayTime(0);

	// Assign default values to the config manager, in case settings are missing
	ConfMan.registerDefault("talkspeed", "255");
	ConfMan.registerDefault("subtitles", "true");

	_musicVolume = ConfMan.getInt("music_volume");
	_subtitlesEnabled = ConfMan.getBool("subtitles");
	_readingSpeed = getTalkspeed();
	_copyProtection = ConfMan.getBool("copy_protection");
	_musicWasPlaying = false;
	_isIHNMDemo = Common::File::exists("music.res");
	_hasITESceneSubstitutes = Common::File::exists("boarhall.bbm");

	if (_readingSpeed > 3)
		_readingSpeed = 0;

	switch (getGameId()) {
		case GID_ITE:
			_resource = new Resource_RSC(this);
			break;
#ifdef ENABLE_IHNM
		case GID_IHNM:
			_resource = new Resource_RES(this);
			break;
#endif
#ifdef ENABLE_SAGA2
		case GID_DINO:
		case GID_FTA2:
			_resource = new Resource_HRS(this);
			break;
#endif
	}

	// Detect game and open resource files
	if (!initGame()) {
		GUIErrorMessage("Error loading game resources.");
		return Common::kUnknownError;
	}

	// Initialize engine modules
	// TODO: implement differences for SAGA2
	_sndRes = new SndRes(this);
	_events = new Events(this);

	if (!isSaga2()) {
		_font = new Font(this);
		_sprite = new Sprite(this);
		_script = new SAGA1Script(this);
	} else {
		_script = new SAGA2Script(this);
	}

	_anim = new Anim(this);
	_interface = new Interface(this); // requires script module
	_scene = new Scene(this);
	_actor = new Actor(this);
	_palanim = new PalAnim(this);

	if (getGameId() == GID_ITE) {
		_isoMap = new IsoMap(this);
		_puzzle = new Puzzle(this);
	}

	// System initialization

	_previousTicks = _system->getMillis();

	// Initialize graphics
	_gfx = new Gfx(this, _system, getDisplayInfo().width, getDisplayInfo().height);

	// Graphics driver should be initialized before console
	_console = new Console(this);

	// Graphics should be initialized before music
	_music = new Music(this, _mixer);
	_render = new Render(this, _system);
	if (!_render->initialized()) {
		return Common::kUnknownError;
	}

	// Initialize system specific sound
	_sound = new Sound(this, _mixer);

	if (!isSaga2()) {
		_interface->converseClear();
		_script->setVerb(_script->getVerbType(kVerbWalkTo));
	}

	_music->setVolume(_musicVolume, 1);

	if (!isSaga2()) {
		_gfx->initPalette();
	}

	if (_voiceFilesExist) {
		if (getGameId() == GID_IHNM) {
			if (!ConfMan.hasKey("voices")) {
				_voicesEnabled = true;
				ConfMan.setBool("voices", true);
			} else {
				_voicesEnabled = ConfMan.getBool("voices");
			}
		} else {
			_voicesEnabled = true;
		}
	}

	syncSoundSettings();

	int msec = 0;

	_previousTicks = _system->getMillis();

	if (ConfMan.hasKey("start_scene")) {
		_scene->changeScene(ConfMan.getInt("start_scene"), 0, kTransitionNoFade);
	} else if (ConfMan.hasKey("boot_param")) {
		if (getGameId() == GID_ITE)
			_interface->addToInventory(_actor->objIndexToId(0));	// Magic hat
		_scene->changeScene(ConfMan.getInt("boot_param"), 0, kTransitionNoFade);
	} else if (ConfMan.hasKey("save_slot")) {
		// Init the current chapter to 8 (character selection) for IHNM
		if (getGameId() == GID_IHNM)
			_scene->changeScene(-2, 0, kTransitionFade, 8);

		// First scene sets up palette
		_scene->changeScene(getStartSceneNumber(), 0, kTransitionNoFade);
		_events->handleEvents(0); // Process immediate events

		if (getGameId() == GID_ITE)
			_interface->setMode(kPanelMain);
		else
			_interface->setMode(kPanelChapterSelection);

		char *fileName = calcSaveFileName(ConfMan.getInt("save_slot"));
		load(fileName);
		syncSoundSettings();
	} else {
		_framesEsc = 0;
		_scene->startScene();
	}

	uint32 currentTicks;

	while (!shouldQuit()) {
		_console->onFrame();

		if (_render->getFlags() & RF_RENDERPAUSE) {
			// Freeze time while paused
			_previousTicks = _system->getMillis();
		} else {
			currentTicks = _system->getMillis();
			// Timer has rolled over after 49 days
			if (currentTicks < _previousTicks)
				msec = 0;
			else {
				msec = currentTicks - _previousTicks;
				_previousTicks = currentTicks;
			}
			if (msec > MAX_TIME_DELTA) {
				msec = MAX_TIME_DELTA;
			}

			// Since Puzzle and forced text are actorless, we do them here
			if ((getGameId() == GID_ITE && _puzzle->isActive()) || _actor->isForcedTextShown()) {
				_actor->handleSpeech(msec);
			} else if (!_scene->isInIntro()) {
				if (_interface->getMode() == kPanelMain ||
						_interface->getMode() == kPanelConverse ||
						_interface->getMode() == kPanelCutaway ||
						_interface->getMode() == kPanelNull ||
						_interface->getMode() == kPanelChapterSelection)
					_actor->direct(msec);
			}

			_events->handleEvents(msec);
			_script->executeThreads(msec);
		}
		// Per frame processing
		_render->drawScene();
		_system->delayMillis(10);
	}

	return Common::kNoError;
}

void SagaEngine::loadStrings(StringsTable &stringsTable, const ByteArray &stringsData) {
	uint16 stringsCount;
	size_t offset;
	size_t prevOffset = 0;
	Common::Array<size_t> tempOffsets;
	uint ui;

	if (stringsData.empty()) {
		error("SagaEngine::loadStrings() Error loading strings list resource");
	}


	ByteArrayReadStreamEndian scriptS(stringsData, isBigEndian()); //TODO: get endianess from context

	offset = scriptS.readUint16();
	stringsCount = offset / 2;
	ui = 0;
	scriptS.seek(0);
	tempOffsets.resize(stringsCount);
	while (ui < stringsCount) {
		offset = scriptS.readUint16();
		// In some rooms in IHNM, string offsets can be greater than the maximum value than a 16-bit integer can hold
		// We detect this by checking the previous offset, and if it was bigger than the current one, an overflow
		// occurred (since the string offsets are sequential), so we're adding the missing part of the number
		// Fixes bug #1895205 - "IHNM: end game text/caption error"
		if (prevOffset > offset)
			offset += 65536;
		prevOffset = offset;
		if (offset == stringsData.size()) {
			stringsCount = ui;
			tempOffsets.resize(stringsCount);
			break;
		}
		if (offset > stringsData.size()) {
			// This case should never occur, but apparently it does in the Italian fan
			// translation of IHNM
			warning("SagaEngine::loadStrings wrong strings table");
			stringsCount = ui;
			tempOffsets.resize(stringsCount);
			break;
		}
		tempOffsets[ui] = offset;
		ui++;
	}

	prevOffset = scriptS.pos();
	int32 left = scriptS.size() - prevOffset;
	if (left < 0) {
		error("SagaEngine::loadStrings() Error loading strings buffer");
	}

	stringsTable.buffer.resize(left);
	if (left > 0) {
		scriptS.read(&stringsTable.buffer.front(), left);
	}

	stringsTable.strings.resize(tempOffsets.size());
	for (ui = 0; ui < tempOffsets.size(); ui++) {
		offset = tempOffsets[ui] - prevOffset;
		if (offset >= stringsTable.buffer.size()) {
			error("SagaEngine::loadStrings() Wrong offset");
		}
		stringsTable.strings[ui] = &stringsTable.buffer[offset];

		debug(9, "string[%i]=%s", ui, stringsTable.strings[ui]);
	}
}

const char *SagaEngine::getObjectName(uint16 objectId) const {
	ActorData *actor;
	ObjectData *obj;
	const HitZone *hitZone;

	// Disable the object names in IHNM when the chapter is 8
	if (getGameId() == GID_IHNM && _scene->currentChapterNumber() == 8)
		return "";

	switch (objectTypeId(objectId)) {
	case kGameObjectObject:
		obj = _actor->getObj(objectId);
		if (getGameId() == GID_ITE)
			return _script->_mainStrings.getString(obj->_nameIndex);
		return _actor->_objectsStrings.getString(obj->_nameIndex);
	case kGameObjectActor:
		actor = _actor->getActor(objectId);
		return _actor->_actorsStrings.getString(actor->_nameIndex);
	case kGameObjectHitZone:
		hitZone = _scene->_objectMap->getHitZone(objectIdToIndex(objectId));

		if (hitZone == NULL)
			return "";

		return _scene->_sceneStrings.getString(hitZone->getNameIndex());
	}
	warning("SagaEngine::getObjectName name not found for 0x%X", objectId);
	return NULL;
}

const char *SagaEngine::getTextString(int textStringId) {
	const char *string;
	int lang = 0;

	switch (getLanguage()) {
		case Common::DE_DEU:
			lang = 1;
			break;
		case Common::IT_ITA:
			lang = 2;
			break;
		case Common::ES_ESP:
			lang = 3;
			break;
		default:
			lang = 0;
			break;
	}

	string = ITEinterfaceTextStrings[lang][textStringId];
	if (!string)
		string = ITEinterfaceTextStrings[0][textStringId];

	return string;
}

void SagaEngine::getExcuseInfo(int verb, const char *&textString, int &soundResourceId) {
	textString = NULL;

	if (verb == _script->getVerbType(kVerbOpen)) {
		textString = getTextString(kTextNoPlaceToOpen);
		soundResourceId = 239;		// Boar voice 0
	}
	if (verb == _script->getVerbType(kVerbClose)) {
		textString = getTextString(kTextNoOpening);
		soundResourceId = 241;		// Boar voice 2
	}
	if (verb == _script->getVerbType(kVerbUse)) {
		textString = getTextString(kTextDontKnow);
		soundResourceId = 244;		// Boar voice 5
	}
	if (verb == _script->getVerbType(kVerbLookAt)) {
		textString = getTextString(kTextNothingSpecial);
		soundResourceId = 245;		// Boar voice 6
	}
	if (verb == _script->getVerbType(kVerbPickUp)) {
		textString = getTextString(kTextICantPickup);
		soundResourceId = 246;		// Boar voice 7
	}
}

ColorId SagaEngine::KnownColor2ColorId(KnownColor knownColor) {
	ColorId colorId = kITEColorTransBlack;

	if (getGameId() == GID_ITE) {
		switch (knownColor) {
		case(kKnownColorTransparent):
			colorId = kITEColorTransBlack;
			break;
		case (kKnownColorBrightWhite):
			colorId = kITEColorBrightWhite;
			break;
		case (kKnownColorWhite):
			colorId = kITEColorWhite;
			break;
		case (kKnownColorBlack):
			colorId = kITEColorBlack;
			break;
		case (kKnownColorSubtitleTextColor):
			colorId = (ColorId)255;
			break;
		case (kKnownColorVerbText):
			colorId = kITEColorBlue;
			break;
		case (kKnownColorVerbTextShadow):
			colorId = kITEColorBlack;
			break;
		case (kKnownColorVerbTextActive):
			colorId = (ColorId)96;
			break;

		default:
			error("SagaEngine::KnownColor2ColorId unknown color %i", knownColor);
		}
#ifdef ENABLE_IHNM
	} else if (getGameId() == GID_IHNM) {
		// The default colors in the Spanish version of IHNM are shifted by one
		// Fixes bug #1848016 - "IHNM: Wrong Subtitles Color (Spanish)"
		int offset = (getLanguage() == Common::ES_ESP) ? 1 : 0;

		switch (knownColor) {
		case(kKnownColorTransparent):
			colorId = (ColorId)(249 - offset);
			break;
		case (kKnownColorBrightWhite):
			colorId = (ColorId)(251 - offset);
			break;
		case (kKnownColorWhite):
			colorId = (ColorId)(251 - offset);
			break;
		case (kKnownColorBlack):
			colorId = (ColorId)(249 - offset);
			break;
		case (kKnownColorVerbText):
			colorId = (ColorId)(253 - offset);
			break;
		case (kKnownColorVerbTextShadow):
			colorId = (ColorId)(15 - offset);
			break;
		case (kKnownColorVerbTextActive):
			colorId = (ColorId)(252 - offset);
			break;

		default:
			error("SagaEngine::KnownColor2ColorId unknown color %i", knownColor);
		}
#endif
	}
	return colorId;
}

void SagaEngine::setTalkspeed(int talkspeed) {
	ConfMan.setInt("talkspeed", (talkspeed * 255 + 3 / 2) / 3);
}

int SagaEngine::getTalkspeed() const {
	return (ConfMan.getInt("talkspeed") * 3 + 255 / 2) / 255;
}

GUI::Debugger *SagaEngine::getDebugger() {
	return _console;
}

void SagaEngine::syncSoundSettings() {
	Engine::syncSoundSettings();

	_subtitlesEnabled = ConfMan.getBool("subtitles");
	_readingSpeed = getTalkspeed();

	if (_readingSpeed > 3)
		_readingSpeed = 0;

	_musicVolume = ConfMan.getInt("music_volume");
	_music->setVolume(_musicVolume, 1);
	_sound->setVolume();
}

void SagaEngine::pauseEngineIntern(bool pause) {
	bool engineIsPaused = (_render->getFlags() & RF_RENDERPAUSE);
	if (engineIsPaused == pause)
		return;

	if (pause) {
		_render->setFlag(RF_RENDERPAUSE);
		if (_music->isPlaying() && !_music->hasDigitalMusic()) {
			_music->pause();
			_musicWasPlaying = true;
		} else {
			_musicWasPlaying = false;
		}
	} else {
		_render->clearFlag(RF_RENDERPAUSE);
		if (_musicWasPlaying) {
			_music->resume();
		}
	}

	_mixer->pauseAll(pause);
}

} // End of namespace Saga