aboutsummaryrefslogtreecommitdiff
path: root/engines/mohawk/myst_areas.cpp
blob: c9172ce3665cd7135dc82863b027d31bc402202e (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
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
/* 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/myst_areas.h"
#include "mohawk/myst_graphics.h"
#include "mohawk/myst_scripts.h"
#include "mohawk/myst_sound.h"
#include "mohawk/video.h"

#include "common/events.h"
#include "common/system.h"
#include "common/textconsole.h"

namespace Mohawk {

MystArea::MystArea(MohawkEngine_Myst *vm, ResourceType type, Common::SeekableReadStream *rlstStream, MystArea *parent) :
		_vm(vm),
		_parent(parent),
		_type(type) {

	if (parent == nullptr) {
		_flags = rlstStream->readUint16LE();
		_rect.left = rlstStream->readSint16LE();
		_rect.top = rlstStream->readSint16LE();

		if (_rect.top == -1) {
			debugC(kDebugResource, "Invalid _rect.top of -1 found - clamping to 0");
			_rect.top = 0;
		}

		_rect.right = rlstStream->readSint16LE();
		_rect.bottom = rlstStream->readSint16LE();
		_dest = rlstStream->readUint16LE();
	} else {
		_flags = parent->_flags;
		_rect.left = parent->_rect.left;
		_rect.top = parent->_rect.top;
		_rect.right = parent->_rect.right;
		_rect.bottom = parent->_rect.bottom;
		_dest = parent->_dest;
	}

	debugC(kDebugResource, "\tflags: 0x%04X", _flags);
	debugC(kDebugResource, "\tleft: %d", _rect.left);
	debugC(kDebugResource, "\ttop: %d", _rect.top);
	debugC(kDebugResource, "\tright: %d", _rect.right);
	debugC(kDebugResource, "\tbottom: %d", _rect.bottom);
	debugC(kDebugResource, "\tdest: %d", _dest);
}

MystArea::~MystArea() {
}

void MystArea::handleMouseUp() {
	if (_dest == 0) {
		warning("Movement type resource with null destination at position (%d, %d), (%d, %d)", _rect.left, _rect.top, _rect.right, _rect.bottom);
		return;
	}

	uint16 opcode;

	switch (_type) {
	case kMystAreaForward:
		opcode = 6;
		break;
	case kMystAreaLeft:
		opcode = 8;
		break;
	case kMystAreaRight:
		opcode = 7;
		break;
	default:
		opcode = 48;
		break;
	}

	_vm->_scriptParser->setInvokingResource(this);
	_vm->_scriptParser->runOpcode(opcode, 0);
}

bool MystArea::canBecomeActive() {
	return !unreachableZipDest() && (isEnabled() || (_flags & kMystUnknownFlag));
}

bool MystArea::unreachableZipDest() {
	return (_flags & kMystZipModeEnableFlag)
			&& !_vm->_gameState->isReachableZipDest(_vm->getCurStack() , _dest);
}

bool MystArea::isEnabled() {
	return _flags & kMystHotspotEnableFlag;
}

void MystArea::setEnabled(bool enabled) {
	if (enabled)
		_flags |= kMystHotspotEnableFlag;
	else
		_flags &= ~kMystHotspotEnableFlag;
}

const Common::String MystArea::describe() {
	Common::String desc = Common::String::format("type: %2d rect: (%3d %3d %3d %3d)",
			_type, _rect.left, _rect.top, _rect.width(), _rect.height());

	if (_dest != 0)
		desc += Common::String::format(" dest: %4d", _dest);

	return desc;
}

void MystArea::drawBoundingRect() {
	if (_rect.isValidRect()) {
		if (!canBecomeActive())
			_vm->_gfx->drawRect(_rect, kRectUnreachable);
		else if (isEnabled())
			_vm->_gfx->drawRect(_rect, kRectEnabled);
		else
			_vm->_gfx->drawRect(_rect, kRectDisabled);
	}
}

MystAreaAction::MystAreaAction(MohawkEngine_Myst *vm, ResourceType type, Common::SeekableReadStream *rlstStream, MystArea *parent) :
		MystArea(vm, type, rlstStream, parent) {
	debugC(kDebugResource, "\tResource Type 5 Script:");

	_script = vm->_scriptParser->readScript(rlstStream, kMystScriptNormal);
}

void MystAreaAction::handleMouseUp() {
	_vm->_scriptParser->runScript(_script, this);
}

const Common::String MystAreaAction::describe() {
	Common::String desc = MystArea::describe();

	if (_script->size() != 0) {
		desc += " ops:";

		for (uint i = 0; i < _script->size(); i++)
			desc += " " + _vm->_scriptParser->getOpcodeDesc((*_script)[i].opcode);
	}

	return desc;
}

// In Myst/Making of Myst, the paths are hardcoded ala Windows style without extension. Convert them.
Common::String MystAreaVideo::convertMystVideoName(const Common::String &name) {
	Common::String temp;

	for (uint32 i = 1; i < name.size(); i++) {
		if (name[i] == '\\')
			temp += '/';
		else
			temp += name[i];
	}

	return temp + ".mov";
}

MystAreaVideo::MystAreaVideo(MohawkEngine_Myst *vm, ResourceType type, Common::SeekableReadStream *rlstStream, MystArea *parent) :
		MystAreaAction(vm, type, rlstStream, parent) {
	char c = 0;

	do {
		c = rlstStream->readByte();
		_videoFile += c;
	} while (c);

	rlstStream->skip(_videoFile.size() & 1);

	// Trim method does not remove extra trailing nulls
	while (_videoFile.size() != 0 && _videoFile.lastChar() == 0)
		_videoFile.deleteLastChar();

	_videoFile = convertMystVideoName(_videoFile);

	// Position values require modulus 10000 to keep in sane range.
	_left = rlstStream->readSint16LE() % 10000;
	_top = rlstStream->readSint16LE() % 10000;
	_playOnCardChange = rlstStream->readUint16LE();
	_direction = rlstStream->readSint16LE();
	_playBlocking = rlstStream->readUint16LE();
	_loop = rlstStream->readUint16LE();
	_playRate = rlstStream->readUint16LE();

	debugC(kDebugResource, "\tvideoFile: \"%s\"", _videoFile.c_str());
	debugC(kDebugResource, "\tleft: %d", _left);
	debugC(kDebugResource, "\ttop: %d", _top);
	debugC(kDebugResource, "\tloop: %d", _loop);
	debugC(kDebugResource, "\tdirection: %d", _direction);
	debugC(kDebugResource, "\tplayBlocking: %d", _playBlocking);
	debugC(kDebugResource, "\tplayOnCardChange: %d", _playOnCardChange);
	debugC(kDebugResource, "\tplayRate: %d", _playRate);
}

VideoEntryPtr MystAreaVideo::playMovie() {
	// Check if the video is already running
	VideoEntryPtr handle = _vm->_video->findVideo(_videoFile);

	// If the video is not running, play it
	if (!handle) {
		handle = _vm->_video->playMovie(_videoFile, Audio::Mixer::kSFXSoundType);
		if (!handle)
			error("Failed to open '%s'", _videoFile.c_str());

		handle->moveTo(_left, _top);
		handle->setLooping(_loop != 0);

		Common::Rational rate;
		if (_playRate != 0) {
			rate = Common::Rational(_playRate, 100);
		} else {
			rate = 1;
		}

		if (_direction == -1) {
			rate = -rate;
			handle->seek(handle->getDuration());
		}

		handle->setRate(rate);
	} else {
		// Resume the video
		handle->pause(false);
		handle->start();
	}

	if (_playBlocking) {
		_vm->waitUntilMovieEnds(handle);
		return VideoEntryPtr();
	}

	return handle;
}

VideoEntryPtr MystAreaVideo::getVideo() {
	// If the video is already in the manager, just return the handle
	VideoEntryPtr handle = _vm->_video->findVideo(_videoFile);
	if (!handle) {
		// If the video has not been loaded yet, do it but don't start playing it
		handle = _vm->_video->playMovie(_videoFile, Audio::Mixer::kSFXSoundType);
		if (!handle)
			error("Failed to open '%s'", _videoFile.c_str());
		handle->stop();
	}

	return handle;
}

void MystAreaVideo::handleCardChange() {
	if (_playOnCardChange)
		playMovie();
}

bool MystAreaVideo::isPlaying() {
	VideoEntryPtr handle = _vm->_video->findVideo(_videoFile);
	return handle && !handle->endOfVideo();
}

void MystAreaVideo::pauseMovie(bool pause) {
	VideoEntryPtr handle = _vm->_video->findVideo(_videoFile);
	if (handle && !handle->endOfVideo())
		handle->pause(pause);
}

MystAreaActionSwitch::MystAreaActionSwitch(MohawkEngine_Myst *vm, ResourceType type, Common::SeekableReadStream *rlstStream, MystArea *parent) :
		MystArea(vm, type, rlstStream, parent) {
	_actionSwitchVar = rlstStream->readUint16LE();
	uint16 numSubResources = rlstStream->readUint16LE();
	debugC(kDebugResource, "\tactionSwitchVar: %d", _actionSwitchVar);
	debugC(kDebugResource, "\tnumSubResources: %d", numSubResources);

	for (uint16 i = 0; i < numSubResources; i++)
		_subResources.push_back(vm->loadResource(rlstStream, this));
}

MystAreaActionSwitch::~MystAreaActionSwitch() {
	for (uint32 i = 0; i < _subResources.size(); i++)
		delete _subResources[i];

	_subResources.clear();
}

void MystAreaActionSwitch::doSwitch(AreaHandler handler) {
	if (_actionSwitchVar == 0xFFFF) {
		if (_subResources.size() == 1)
			(_subResources[0]->*handler)();
		else if (_subResources.size() != 0)
			warning("Action switch resource with _numSubResources of %d, but no control variable", _subResources.size());
	} else {
		uint16 varValue = _vm->_scriptParser->getVar(_actionSwitchVar);

		if (_subResources.size() == 1 && varValue != 0)
			(_subResources[0]->*handler)();
		else if (_subResources.size() != 0) {
			if (varValue < _subResources.size())
				(_subResources[varValue]->*handler)();
			else
				warning("Action switch resource Var %d: %d exceeds number of sub resources %d", _actionSwitchVar, varValue, _subResources.size());
		}
	}
}

void MystAreaActionSwitch::drawDataToScreen() {
	doSwitch(&MystArea::drawDataToScreen);
}

void MystAreaActionSwitch::handleCardChange() {
	doSwitch(&MystArea::handleCardChange);
}

void MystAreaActionSwitch::handleMouseUp() {
	doSwitch(&MystArea::handleMouseUp);
}

void MystAreaActionSwitch::handleMouseDown() {
	doSwitch(&MystArea::handleMouseDown);
}

MystAreaImageSwitch::MystAreaImageSwitch(MohawkEngine_Myst *vm, ResourceType type, Common::SeekableReadStream *rlstStream, MystArea *parent) :
		MystAreaActionSwitch(vm, type, rlstStream, parent) {
	_imageSwitchVar = rlstStream->readUint16LE();
	uint16 numSubImages = rlstStream->readUint16LE();
	debugC(kDebugResource, "\tvar8: %d", _imageSwitchVar);
	debugC(kDebugResource, "\tnumSubImages: %d", numSubImages);

	for (uint16 i = 0; i < numSubImages; i++) {
		debugC(kDebugResource, "\tSubimage %d:", i);

		SubImage subImage;
		subImage.wdib = rlstStream->readUint16LE();
		subImage.rect.left = rlstStream->readSint16LE();

		if (subImage.rect.left != -1) {
			subImage.rect.top = rlstStream->readSint16LE();
			subImage.rect.right = rlstStream->readSint16LE();
			subImage.rect.bottom = rlstStream->readSint16LE();
		} else {
			// Use the hotspot rect as the source rect since the subimage is fullscreen
			// Convert to bitmap coordinates (upside down)
			subImage.rect.left = _rect.left;
			subImage.rect.top = 333 - _rect.bottom;
			subImage.rect.right = _rect.right;
			subImage.rect.bottom = 333 - _rect.top;
		}

		debugC(kDebugResource, "\twdib: %d", subImage.wdib);
		debugC(kDebugResource, "\tleft: %d", subImage.rect.left);
		debugC(kDebugResource, "\ttop: %d", subImage.rect.top);
		debugC(kDebugResource, "\tright: %d", subImage.rect.right);
		debugC(kDebugResource, "\tbottom: %d", subImage.rect.bottom);

		_subImages.push_back(subImage);
	}
}

MystAreaImageSwitch::~MystAreaImageSwitch() {
}

void MystAreaImageSwitch::drawDataToScreen() {
	// Need to call overridden function to ensure
	// switch section is processed correctly.
	MystAreaActionSwitch::drawDataToScreen();

	bool drawSubImage = false;
	int16 subImageId = 0;

	if (_imageSwitchVar == 0xFFFF) {
		if (_subImages.size() == 1) {
			subImageId = 0;
			drawSubImage = true;
		} else if (_subImages.size() != 0)
			warning("Image Switch resource with _numSubImages of %d, but no control variable", _subImages.size());
	} else {
		uint16 varValue = _vm->_scriptParser->getVar(_imageSwitchVar);

		if (_subImages.size() == 1 && varValue != 0) {
			subImageId = 0;
			drawSubImage = true;
		} else if (_subImages.size() != 0) {
			if (varValue < _subImages.size()) {
				subImageId = varValue;
				drawSubImage = true;
			} else
				warning("Image Switch Var %d: %d exceeds number of subImages %d", _imageSwitchVar, varValue, _subImages.size());
		}
	}

	if (drawSubImage) {
		uint16 imageToDraw = _subImages[subImageId].wdib;

		// This special case means redraw background
		if (imageToDraw == 0xFFFF)
			imageToDraw = _vm->getCardBackgroundId();

		_vm->_gfx->copyImageSectionToBackBuffer(imageToDraw, _subImages[subImageId].rect, _rect);
	}
}

//TODO: Merge with the method above?
void MystAreaImageSwitch::drawConditionalDataToScreen(uint16 state, bool update) {
	bool drawSubImage = false;
	int16 subImageId = 0;


	if (_subImages.size() == 1 && state != 0) {
		subImageId = 0;
		drawSubImage = true;
	} else if (_subImages.size() != 0) {
		if (state < _subImages.size()) {
			subImageId = state;
			drawSubImage = true;
		} else
			warning("Image Switch Var %d: %d exceeds number of subImages %d", _imageSwitchVar, state, _subImages.size());
	}


	if (drawSubImage) {
		uint16 imageToDraw = _subImages[subImageId].wdib;

		// This special case means redraw background
		if (imageToDraw == 0xFFFF)
			imageToDraw = _vm->getCardBackgroundId();

		// Draw to screen
		if (update) {
			_vm->_gfx->copyImageSectionToScreen(imageToDraw, _subImages[subImageId].rect, _rect);
		} else {
			_vm->_gfx->copyImageSectionToBackBuffer(imageToDraw, _subImages[subImageId].rect, _rect);
		}
	}
}

uint16 MystAreaImageSwitch::getImageSwitchVar() {
	return _imageSwitchVar;
}

MystAreaImageSwitch::SubImage MystAreaImageSwitch::getSubImage(uint index) const {
	return _subImages[index];
}

void MystAreaImageSwitch::setSubImageRect(uint index, const Common::Rect &rect) {
	_subImages[index].rect = rect;
}

const Common::String MystAreaImageSwitch::describe() {
	Common::String desc = Common::String::format("%s var: %2d",
	                                             MystAreaActionSwitch::describe().c_str(), _imageSwitchVar);

	if (_subImages.size() > 0) {
		desc +=  " subImgs:";

		for (uint i = 0; i < _subImages.size(); i++)
			desc += Common::String::format(" %d", (int16)_subImages[i].wdib);
	}

	return desc;
}

// No MystResourceType9!

MystAreaSlider::MystAreaSlider(MohawkEngine_Myst *vm, ResourceType type, Common::SeekableReadStream *rlstStream, MystArea *parent) :
		MystAreaDrag(vm, type, rlstStream, parent) {
	_dragSound = rlstStream->readUint16LE();

	debugC(kDebugResource, "\tdrag sound : %d", _dragSound);

	_sliderWidth = _rect.right - _rect.left;
	_sliderHeight = _rect.bottom - _rect.top;
}

MystAreaSlider::~MystAreaSlider() {
}

void MystAreaSlider::setStep(uint16 step) {
	_rect.top = _minV + _stepV * step - _sliderHeight / 2;
	_rect.bottom = _rect.top + _sliderHeight;
	_subImages[0].rect.top = 333 - _rect.bottom - 1;
	_subImages[0].rect.bottom = 333 - _rect.top - 1;
}

void MystAreaSlider::setPosition(uint16 pos) {
	Common::Point mouse;
	mouse.y = pos;
	updatePosition(mouse);
}

Common::Rect MystAreaSlider::boundingBox() {
	Common::Rect bb;

	bb.top = _rect.top;
	bb.bottom = _rect.bottom;
	bb.left = _rect.left;
	bb.right = _rect.right;

	if (_flagHV & 1) {
		bb.left = _minH - _sliderWidth / 2;
		bb.right = _maxH + _sliderWidth / 2;
	}

	if (_flagHV & 2) {
		bb.top = _minV - _sliderHeight / 2;
		bb.bottom = _maxV + _sliderHeight / 2;
	}

	bb.grow(1);

	return bb;
}

void MystAreaSlider::restoreBackground() {
	// Restore background
	Common::Rect src = boundingBox();
	Common::Rect dest = boundingBox();
	src.top = 332 - dest.bottom;
	src.bottom = 332 - dest.top;
	_vm->_gfx->copyImageSectionToScreen(_vm->getCardBackgroundId(), src, dest);
}

void MystAreaSlider::handleMouseDown() {
	const Common::Point &mouse = _vm->_system->getEventManager()->getMousePos();
	updatePosition(mouse);

	MystAreaDrag::handleMouseDown();

	// Restore background
	restoreBackground();

	// Draw slider
	drawConditionalDataToScreen(2);
}

void MystAreaSlider::handleMouseUp() {
	const Common::Point &mouse = _vm->_system->getEventManager()->getMousePos();
	updatePosition(mouse);

	// Restore background
	restoreBackground();

	// Draw slider
	drawConditionalDataToScreen(1);

	// Save slider value
	uint16 value = 0;
	if (_flagHV & 2) {
		if (_stepsV)
			value = (_pos.y - _minV) / _stepV;
		else
			value = _pos.y;
	} else if (_flagHV & 1) {
		if (_stepsH)
			value = (_pos.x - _minH) / _stepH;
		else
			value = _pos.x;
	}

	_vm->_scriptParser->setVarValue(_imageSwitchVar, value);

	MystAreaDrag::handleMouseUp();
}

void MystAreaSlider::handleMouseDrag() {
	const Common::Point &mouse = _vm->_system->getEventManager()->getMousePos();
	updatePosition(mouse);

	MystAreaDrag::handleMouseDrag();

	// Restore background
	restoreBackground();

	// Draw slider
	drawConditionalDataToScreen(2);
}

void MystAreaSlider::updatePosition(const Common::Point &mouse) {
	bool positionChanged = false;

	Common::Point mouseClipped;
	setPositionClipping(mouse, mouseClipped);

	if (_flagHV & 2) {
		if (_stepV) {
			uint16 center = _minV + _stepV * (mouseClipped.y - _minV) / _stepV;
			uint16 top = center - _sliderHeight / 2;

			if (_rect.top != top || _pos.y != center) {
				positionChanged = true;
				_pos.y = center;
				_rect.top = top;
			}
		} else {
			positionChanged = true;
			_pos.y = mouseClipped.y;
			_rect.top = mouseClipped.y - _sliderHeight / 2;
		}

		if (positionChanged) {
			_rect.bottom = _rect.top + _sliderHeight;
			_subImages[0].rect.top = 333 - _rect.bottom - 1;
			_subImages[0].rect.bottom = 333 - _rect.top - 1;
		}
	}

	if (_flagHV & 1) {
		if (_stepH) {
			uint16 center = _minH + _stepH * (mouseClipped.x - _minH) / _stepH;
			uint16 left = center - _sliderWidth / 2;

			if (_rect.left != left || _pos.x != center) {
				positionChanged = true;
				_pos.x = center;
				_rect.left = left;
			}
		} else {
			positionChanged = true;
			_pos.x = mouseClipped.x;
			_rect.left = mouseClipped.x - _sliderWidth / 2;
		}

		if (positionChanged)
			_rect.right = _rect.left + _sliderWidth;
	}

	if (positionChanged && _dragSound)
		_vm->_sound->playEffect(_dragSound);
}

MystAreaDrag::MystAreaDrag(MohawkEngine_Myst *vm, ResourceType type, Common::SeekableReadStream *rlstStream, MystArea *parent) :
		MystAreaImageSwitch(vm, type, rlstStream, parent) {
	_flagHV = rlstStream->readUint16LE();
	_minH = rlstStream->readUint16LE();
	_maxH = rlstStream->readUint16LE();
	_minV = rlstStream->readUint16LE();
	_maxV = rlstStream->readUint16LE();
	_stepsH = rlstStream->readUint16LE();
	_stepsV = rlstStream->readUint16LE();
	_mouseDownOpcode = rlstStream->readUint16LE();
	_mouseDragOpcode = rlstStream->readUint16LE();
	_mouseUpOpcode = rlstStream->readUint16LE();

	debugC(kDebugResource, "\tdirection: %d", _flagHV);
	debugC(kDebugResource, "\thorizontal min: %d", _minH);
	debugC(kDebugResource, "\thorizontal max: %d", _maxH);
	debugC(kDebugResource, "\tvertical min: %d", _minV);
	debugC(kDebugResource, "\tvertical max: %d", _maxV);
	debugC(kDebugResource, "\thorizontal steps: %d", _stepsH);
	debugC(kDebugResource, "\tvertical steps: %d", _stepsV);
	debugC(kDebugResource, "\t_mouseDownOpcode: %d", _mouseDownOpcode);
	debugC(kDebugResource, "\t_mouseDragOpcode: %d", _mouseDragOpcode);
	debugC(kDebugResource, "\t_mouseUpOpcode: %d", _mouseUpOpcode);

	debugCN(kDebugResource, "Type 11 _mouseDownOpcode: %d\n", _mouseDownOpcode);
	debugCN(kDebugResource, "Type 11 _mouseDragOpcode: %d\n", _mouseDragOpcode);
	debugCN(kDebugResource, "Type 11 _mouseUpOpcode: %d\n", _mouseUpOpcode);

	for (byte i = 0; i < ARRAYSIZE(_lists); i++) {
		debugC(kDebugResource, "\tList %d:", i);

		uint16 listCount = rlstStream->readUint16LE();
		debugC(kDebugResource, "\t%d values", listCount);

		for (uint16 j = 0; j < listCount; j++) {
			_lists[i].push_back(rlstStream->readUint16LE());
			debugC(kDebugResource, "\tValue %d: %d", j, _lists[i][j]);
		}
	}

	_stepH = 0;
	_stepV = 0;

	if (_stepsH)
		_stepH = (_maxH - _minH) / (_stepsH - 1);

	if (_stepsV)
		_stepV = (_maxV - _minV) / (_stepsV - 1);
}

MystAreaDrag::~MystAreaDrag() {
}

void MystAreaDrag::handleMouseDown() {
	const Common::Point &mouse = _vm->_system->getEventManager()->getMousePos();
	setPositionClipping(mouse, _pos);

	_vm->_scriptParser->setInvokingResource(this);
	_vm->_scriptParser->runOpcode(_mouseDownOpcode, _imageSwitchVar);
}

void MystAreaDrag::handleMouseUp() {
	const Common::Point &mouse = _vm->_system->getEventManager()->getMousePos();
	setPositionClipping(mouse, _pos);

	_vm->_scriptParser->setInvokingResource(this);
	_vm->_scriptParser->runOpcode(_mouseUpOpcode, _imageSwitchVar);
}

void MystAreaDrag::handleMouseDrag() {
	const Common::Point &mouse = _vm->_system->getEventManager()->getMousePos();
	setPositionClipping(mouse, _pos);

	_vm->_scriptParser->setInvokingResource(this);
	_vm->_scriptParser->runOpcode(_mouseDragOpcode, _imageSwitchVar);
}

const Common::String MystAreaDrag::describe() {
	return Common::String::format("%s down: %s drag: %s up: %s",
			MystAreaImageSwitch::describe().c_str(),
			_vm->_scriptParser->getOpcodeDesc(_mouseDownOpcode).c_str(),
			_vm->_scriptParser->getOpcodeDesc(_mouseDragOpcode).c_str(),
			_vm->_scriptParser->getOpcodeDesc(_mouseUpOpcode).c_str());
}

void MystAreaDrag::setPositionClipping(const Common::Point &mouse, Common::Point &dest) {
	if (_flagHV & 2)
		dest.y = CLIP<uint16>(mouse.y, _minV, _maxV);

	if (_flagHV & 1)
		dest.x = CLIP<uint16>(mouse.x, _minH, _maxH);
}

uint16 MystAreaDrag::getList1(uint16 index) {
	return (index < _lists[0].size()) ? _lists[0][index] : 0;
}

uint16 MystAreaDrag::getList2(uint16 index) {
	return (index < _lists[1].size()) ?  _lists[1][index] : 0;
}

uint16 MystAreaDrag::getList3(uint16 index) {
	return (index < _lists[2].size()) ?  _lists[2][index] : 0;
}

MystVideoInfo::MystVideoInfo(MohawkEngine_Myst *vm, ResourceType type, Common::SeekableReadStream *rlstStream, MystArea *parent) :
		MystAreaDrag(vm, type, rlstStream, parent) {
	_numFrames = rlstStream->readUint16LE();
	_firstFrame = rlstStream->readUint16LE();
	uint16 frameWidth = rlstStream->readUint16LE();
	uint16 frameHeight = rlstStream->readUint16LE();
	_frameRect.left = rlstStream->readUint16LE();
	_frameRect.top = rlstStream->readUint16LE();

	_frameRect.right = _frameRect.left + frameWidth;
	_frameRect.bottom = _frameRect.top + frameHeight;

	debugC(kDebugResource, "\t_numFrames: %d", _numFrames);
	debugC(kDebugResource, "\t_firstFrame: %d", _firstFrame);
	debugC(kDebugResource, "\tframeWidth: %d", frameWidth);
	debugC(kDebugResource, "\tframeHeight: %d", frameHeight);
	debugC(kDebugResource, "\t_frameRect.left: %d", _frameRect.left);
	debugC(kDebugResource, "\t_frameRect.top: %d", _frameRect.top);
	debugC(kDebugResource, "\t_frameRect.right: %d", _frameRect.right);
	debugC(kDebugResource, "\t_frameRect.bottom: %d", _frameRect.bottom);
}

MystVideoInfo::~MystVideoInfo() {
}

void MystVideoInfo::drawFrame(uint16 frame) {
	uint16 currentFrame = _firstFrame + frame;
	_vm->_gfx->copyImageToScreen(currentFrame, _frameRect);
}

bool MystVideoInfo::pullLeverV() {
	const Common::Point &mouse = _vm->_system->getEventManager()->getMousePos();

	// Make the handle follow the mouse
	int16 maxStep = getStepsV() - 1;
	Common::Rect rect = getRect();
	int16 step = ((mouse.y - rect.top) * getStepsV()) / rect.height();
	step = CLIP<int16>(step, 0, maxStep);

	// Draw current frame
	drawFrame(step);

	// Return true if lever fully pulled
	return step == maxStep;
}

void MystVideoInfo::releaseLeverV() {
	const Common::Point &mouse = _vm->_system->getEventManager()->getMousePos();

	// Get current lever frame
	int16 maxStep = getStepsV() - 1;
	Common::Rect rect = getRect();
	int16 step = ((mouse.y - rect.top) * getStepsV()) / rect.height();
	step = CLIP<int16>(step, 0, maxStep);

	// Release lever
	for (int i = step; i >= 0; i--) {
		drawFrame(i);
		_vm->doFrame();
	}
}

MystAreaHover::MystAreaHover(MohawkEngine_Myst *vm, ResourceType type, Common::SeekableReadStream *rlstStream, MystArea *parent) :
		MystArea(vm, type, rlstStream, parent) {
	_enterOpcode = rlstStream->readUint16LE();
	_leaveOpcode = rlstStream->readUint16LE();

	debugC(kDebugResource, "\t_enterOpcode: %d", _enterOpcode);
	debugC(kDebugResource, "\t_leaveOpcode: %d", _leaveOpcode);
}

void MystAreaHover::handleMouseEnter() {
	// Pass along the enter opcode to the script parser
	// The variable to use is stored in the dest field
	_vm->_scriptParser->runOpcode(_enterOpcode, _dest);
}

void MystAreaHover::handleMouseLeave() {
	// Pass along the leave opcode (with no parameters) to the script parser
	// The variable to use is stored in the dest field
	_vm->_scriptParser->runOpcode(_leaveOpcode, _dest);
}

void MystAreaHover::handleMouseUp() {
	// Type 13 Resources do nothing on Mouse Clicks.
	// This is required to override the inherited default
	// i.e. MystArea::handleMouseUp
}

const Common::String MystAreaHover::describe() {
	return Common::String::format("%s enter: %s leave: %s",
			MystArea::describe().c_str(),
			_vm->_scriptParser->getOpcodeDesc(_enterOpcode).c_str(),
			_vm->_scriptParser->getOpcodeDesc(_leaveOpcode).c_str());
}

} // End of namespace Mohawk